1 |
/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tk_base/tkbind.c,v 1.1.1.1 2001/06/13 04:54:18 dtashley Exp $ */
|
2 |
|
3 |
/*
|
4 |
* tkBind.c --
|
5 |
*
|
6 |
* This file provides procedures that associate Tcl commands
|
7 |
* with X events or sequences of X events.
|
8 |
*
|
9 |
* Copyright (c) 1989-1994 The Regents of the University of California.
|
10 |
* Copyright (c) 1994-1997 Sun Microsystems, Inc.
|
11 |
* Copyright (c) 1998 by Scriptics Corporation.
|
12 |
*
|
13 |
* See the file "license.terms" for information on usage and redistribution
|
14 |
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
15 |
*
|
16 |
* RCS: @(#) $Id: tkbind.c,v 1.1.1.1 2001/06/13 04:54:18 dtashley Exp $
|
17 |
*/
|
18 |
|
19 |
#include "tkPort.h"
|
20 |
#include "tkInt.h"
|
21 |
|
22 |
#ifdef __WIN32__
|
23 |
#include "tkWinInt.h"
|
24 |
#endif
|
25 |
|
26 |
/*
|
27 |
* File structure:
|
28 |
*
|
29 |
* Structure definitions and static variables.
|
30 |
*
|
31 |
* Init/Free this package.
|
32 |
*
|
33 |
* Tcl "bind" command (actually located in tkCmds.c).
|
34 |
* "bind" command implementation.
|
35 |
* "bind" implementation helpers.
|
36 |
*
|
37 |
* Tcl "event" command.
|
38 |
* "event" command implementation.
|
39 |
* "event" implementation helpers.
|
40 |
*
|
41 |
* Package-specific common helpers.
|
42 |
*
|
43 |
* Non-package-specific helpers.
|
44 |
*/
|
45 |
|
46 |
|
47 |
/*
|
48 |
* The following union is used to hold the detail information from an
|
49 |
* XEvent (including Tk's XVirtualEvent extension).
|
50 |
*/
|
51 |
typedef union {
|
52 |
KeySym keySym; /* KeySym that corresponds to xkey.keycode. */
|
53 |
int button; /* Button that was pressed (xbutton.button). */
|
54 |
Tk_Uid name; /* Tk_Uid of virtual event. */
|
55 |
ClientData clientData; /* Used when type of Detail is unknown, and to
|
56 |
* ensure that all bytes of Detail are initialized
|
57 |
* when this structure is used in a hash key. */
|
58 |
} Detail;
|
59 |
|
60 |
/*
|
61 |
* The structure below represents a binding table. A binding table
|
62 |
* represents a domain in which event bindings may occur. It includes
|
63 |
* a space of objects relative to which events occur (usually windows,
|
64 |
* but not always), a history of recent events in the domain, and
|
65 |
* a set of mappings that associate particular Tcl commands with sequences
|
66 |
* of events in the domain. Multiple binding tables may exist at once,
|
67 |
* either because there are multiple applications open, or because there
|
68 |
* are multiple domains within an application with separate event
|
69 |
* bindings for each (for example, each canvas widget has a separate
|
70 |
* binding table for associating events with the items in the canvas).
|
71 |
*
|
72 |
* Note: it is probably a bad idea to reduce EVENT_BUFFER_SIZE much
|
73 |
* below 30. To see this, consider a triple mouse button click while
|
74 |
* the Shift key is down (and auto-repeating). There may be as many
|
75 |
* as 3 auto-repeat events after each mouse button press or release
|
76 |
* (see the first large comment block within Tk_BindEvent for more on
|
77 |
* this), for a total of 20 events to cover the three button presses
|
78 |
* and two intervening releases. If you reduce EVENT_BUFFER_SIZE too
|
79 |
* much, shift multi-clicks will be lost.
|
80 |
*
|
81 |
*/
|
82 |
|
83 |
#define EVENT_BUFFER_SIZE 30
|
84 |
typedef struct BindingTable {
|
85 |
XEvent eventRing[EVENT_BUFFER_SIZE];/* Circular queue of recent events
|
86 |
* (higher indices are for more recent
|
87 |
* events). */
|
88 |
Detail detailRing[EVENT_BUFFER_SIZE];/* "Detail" information (keySym,
|
89 |
* button, Tk_Uid, or 0) for each
|
90 |
* entry in eventRing. */
|
91 |
int curEvent; /* Index in eventRing of most recent
|
92 |
* event. Newer events have higher
|
93 |
* indices. */
|
94 |
Tcl_HashTable patternTable; /* Used to map from an event to a
|
95 |
* list of patterns that may match that
|
96 |
* event. Keys are PatternTableKey
|
97 |
* structs, values are (PatSeq *). */
|
98 |
Tcl_HashTable objectTable; /* Used to map from an object to a
|
99 |
* list of patterns associated with
|
100 |
* that object. Keys are ClientData,
|
101 |
* values are (PatSeq *). */
|
102 |
Tcl_Interp *interp; /* Interpreter in which commands are
|
103 |
* executed. */
|
104 |
} BindingTable;
|
105 |
|
106 |
/*
|
107 |
* The following structure represents virtual event table. A virtual event
|
108 |
* table provides a way to map from platform-specific physical events such
|
109 |
* as button clicks or key presses to virtual events such as <<Paste>>,
|
110 |
* <<Close>>, or <<ScrollWindow>>.
|
111 |
*
|
112 |
* A virtual event is usually never part of the event stream, but instead is
|
113 |
* synthesized inline by matching low-level events. However, a virtual
|
114 |
* event may be generated by platform-specific code or by Tcl scripts. In
|
115 |
* that case, no lookup of the virtual event will need to be done using
|
116 |
* this table, because the virtual event is actually in the event stream.
|
117 |
*/
|
118 |
|
119 |
typedef struct VirtualEventTable {
|
120 |
Tcl_HashTable patternTable; /* Used to map from a physical event to
|
121 |
* a list of patterns that may match that
|
122 |
* event. Keys are PatternTableKey
|
123 |
* structs, values are (PatSeq *). */
|
124 |
Tcl_HashTable nameTable; /* Used to map a virtual event name to
|
125 |
* the array of physical events that can
|
126 |
* trigger it. Keys are the Tk_Uid names
|
127 |
* of the virtual events, values are
|
128 |
* PhysicalsOwned structs. */
|
129 |
} VirtualEventTable;
|
130 |
|
131 |
/*
|
132 |
* The following structure is used as a key in a patternTable for both
|
133 |
* binding tables and a virtual event tables.
|
134 |
*
|
135 |
* In a binding table, the object field corresponds to the binding tag
|
136 |
* for the widget whose bindings are being accessed.
|
137 |
*
|
138 |
* In a virtual event table, the object field is always NULL. Virtual
|
139 |
* events are a global definiton and are not tied to a particular
|
140 |
* binding tag.
|
141 |
*
|
142 |
* The same key is used for both types of pattern tables so that the
|
143 |
* helper functions that traverse and match patterns will work for both
|
144 |
* binding tables and virtual event tables.
|
145 |
*/
|
146 |
typedef struct PatternTableKey {
|
147 |
ClientData object; /* For binding table, identifies the binding
|
148 |
* tag of the object (or class of objects)
|
149 |
* relative to which the event occurred.
|
150 |
* For virtual event table, always NULL. */
|
151 |
int type; /* Type of event (from X). */
|
152 |
Detail detail; /* Additional information, such as keysym,
|
153 |
* button, Tk_Uid, or 0 if nothing
|
154 |
* additional. */
|
155 |
} PatternTableKey;
|
156 |
|
157 |
/*
|
158 |
* The following structure defines a pattern, which is matched against X
|
159 |
* events as part of the process of converting X events into Tcl commands.
|
160 |
*/
|
161 |
|
162 |
typedef struct Pattern {
|
163 |
int eventType; /* Type of X event, e.g. ButtonPress. */
|
164 |
int needMods; /* Mask of modifiers that must be
|
165 |
* present (0 means no modifiers are
|
166 |
* required). */
|
167 |
Detail detail; /* Additional information that must
|
168 |
* match event. Normally this is 0,
|
169 |
* meaning no additional information
|
170 |
* must match. For KeyPress and
|
171 |
* KeyRelease events, a keySym may
|
172 |
* be specified to select a
|
173 |
* particular keystroke (0 means any
|
174 |
* keystrokes). For button events,
|
175 |
* specifies a particular button (0
|
176 |
* means any buttons are OK). For virtual
|
177 |
* events, specifies the Tk_Uid of the
|
178 |
* virtual event name (never 0). */
|
179 |
} Pattern;
|
180 |
|
181 |
/*
|
182 |
* The following structure defines a pattern sequence, which consists of one
|
183 |
* or more patterns. In order to trigger, a pattern sequence must match
|
184 |
* the most recent X events (first pattern to most recent event, next
|
185 |
* pattern to next event, and so on). It is used as the hash value in a
|
186 |
* patternTable for both binding tables and virtual event tables.
|
187 |
*
|
188 |
* In a binding table, it is the sequence of physical events that make up
|
189 |
* a binding for an object.
|
190 |
*
|
191 |
* In a virtual event table, it is the sequence of physical events that
|
192 |
* define a virtual event.
|
193 |
*
|
194 |
* The same structure is used for both types of pattern tables so that the
|
195 |
* helper functions that traverse and match patterns will work for both
|
196 |
* binding tables and virtual event tables.
|
197 |
*/
|
198 |
|
199 |
typedef struct PatSeq {
|
200 |
int numPats; /* Number of patterns in sequence (usually
|
201 |
* 1). */
|
202 |
TkBindEvalProc *eventProc; /* The procedure that will be invoked on
|
203 |
* the clientData when this pattern sequence
|
204 |
* matches. */
|
205 |
TkBindFreeProc *freeProc; /* The procedure that will be invoked to
|
206 |
* release the clientData when this pattern
|
207 |
* sequence is freed. */
|
208 |
ClientData clientData; /* Arbitray data passed to eventProc and
|
209 |
* freeProc when sequence matches. */
|
210 |
int flags; /* Miscellaneous flag values; see below for
|
211 |
* definitions. */
|
212 |
int refCount; /* Number of times that this binding is in
|
213 |
* the midst of executing. If greater than 1,
|
214 |
* then a recursive invocation is happening.
|
215 |
* Only when this is zero can the binding
|
216 |
* actually be freed. */
|
217 |
struct PatSeq *nextSeqPtr; /* Next in list of all pattern sequences
|
218 |
* that have the same initial pattern. NULL
|
219 |
* means end of list. */
|
220 |
Tcl_HashEntry *hPtr; /* Pointer to hash table entry for the
|
221 |
* initial pattern. This is the head of the
|
222 |
* list of which nextSeqPtr forms a part. */
|
223 |
struct VirtualOwners *voPtr;/* In a binding table, always NULL. In a
|
224 |
* virtual event table, identifies the array
|
225 |
* of virtual events that can be triggered by
|
226 |
* this event. */
|
227 |
struct PatSeq *nextObjPtr; /* In a binding table, next in list of all
|
228 |
* pattern sequences for the same object (NULL
|
229 |
* for end of list). Needed to implement
|
230 |
* Tk_DeleteAllBindings. In a virtual event
|
231 |
* table, always NULL. */
|
232 |
Pattern pats[1]; /* Array of "numPats" patterns. Only one
|
233 |
* element is declared here but in actuality
|
234 |
* enough space will be allocated for "numPats"
|
235 |
* patterns. To match, pats[0] must match
|
236 |
* event n, pats[1] must match event n-1, etc.
|
237 |
*/
|
238 |
} PatSeq;
|
239 |
|
240 |
/*
|
241 |
* Flag values for PatSeq structures:
|
242 |
*
|
243 |
* PAT_NEARBY 1 means that all of the events matching
|
244 |
* this sequence must occur with nearby X
|
245 |
* and Y mouse coordinates and close in time.
|
246 |
* This is typically used to restrict multiple
|
247 |
* button presses.
|
248 |
* MARKED_DELETED 1 means that this binding has been marked as deleted
|
249 |
* and removed from the binding table, but its memory
|
250 |
* could not be released because it was already queued for
|
251 |
* execution. When the binding is actually about to be
|
252 |
* executed, this flag will be checked and the binding
|
253 |
* skipped if set.
|
254 |
*/
|
255 |
|
256 |
#define PAT_NEARBY 0x1
|
257 |
#define MARKED_DELETED 0x2
|
258 |
|
259 |
/*
|
260 |
* Constants that define how close together two events must be
|
261 |
* in milliseconds or pixels to meet the PAT_NEARBY constraint:
|
262 |
*/
|
263 |
|
264 |
#define NEARBY_PIXELS 5
|
265 |
#define NEARBY_MS 500
|
266 |
|
267 |
|
268 |
/*
|
269 |
* The following structure keeps track of all the virtual events that are
|
270 |
* associated with a particular physical event. It is pointed to by the
|
271 |
* voPtr field in a PatSeq in the patternTable of a virtual event table.
|
272 |
*/
|
273 |
|
274 |
typedef struct VirtualOwners {
|
275 |
int numOwners; /* Number of virtual events to trigger. */
|
276 |
Tcl_HashEntry *owners[1]; /* Array of pointers to entries in
|
277 |
* nameTable. Enough space will
|
278 |
* actually be allocated for numOwners
|
279 |
* hash entries. */
|
280 |
} VirtualOwners;
|
281 |
|
282 |
/*
|
283 |
* The following structure is used in the nameTable of a virtual event
|
284 |
* table to associate a virtual event with all the physical events that can
|
285 |
* trigger it.
|
286 |
*/
|
287 |
typedef struct PhysicalsOwned {
|
288 |
int numOwned; /* Number of physical events owned. */
|
289 |
PatSeq *patSeqs[1]; /* Array of pointers to physical event
|
290 |
* patterns. Enough space will actually
|
291 |
* be allocated to hold numOwned. */
|
292 |
} PhysicalsOwned;
|
293 |
|
294 |
/*
|
295 |
* One of the following structures exists for each interpreter. This
|
296 |
* structure keeps track of the current display and screen in the
|
297 |
* interpreter, so that a script can be invoked whenever the display/screen
|
298 |
* changes (the script does things like point tkPriv at a display-specific
|
299 |
* structure).
|
300 |
*/
|
301 |
|
302 |
typedef struct {
|
303 |
TkDisplay *curDispPtr; /* Display for last binding command invoked
|
304 |
* in this application. */
|
305 |
int curScreenIndex; /* Index of screen for last binding command. */
|
306 |
int bindingDepth; /* Number of active instances of Tk_BindEvent
|
307 |
* in this application. */
|
308 |
} ScreenInfo;
|
309 |
|
310 |
/*
|
311 |
* The following structure is used to keep track of all the C bindings that
|
312 |
* are awaiting invocation and whether the window they refer to has been
|
313 |
* destroyed. If the window is destroyed, then all pending callbacks for
|
314 |
* that window will be cancelled. The Tcl bindings will still all be
|
315 |
* invoked, however.
|
316 |
*/
|
317 |
|
318 |
typedef struct PendingBinding {
|
319 |
struct PendingBinding *nextPtr;
|
320 |
/* Next in chain of pending bindings, in
|
321 |
* case a recursive binding evaluation is in
|
322 |
* progress. */
|
323 |
Tk_Window tkwin; /* The window that the following bindings
|
324 |
* depend upon. */
|
325 |
int deleted; /* Set to non-zero by window cleanup code
|
326 |
* if tkwin is deleted. */
|
327 |
PatSeq *matchArray[5]; /* Array of pending C bindings. The actual
|
328 |
* size of this depends on how many C bindings
|
329 |
* matched the event passed to Tk_BindEvent.
|
330 |
* THIS FIELD MUST BE THE LAST IN THE
|
331 |
* STRUCTURE. */
|
332 |
} PendingBinding;
|
333 |
|
334 |
/*
|
335 |
* The following structure keeps track of all the information local to
|
336 |
* the binding package on a per interpreter basis.
|
337 |
*/
|
338 |
|
339 |
typedef struct BindInfo {
|
340 |
VirtualEventTable virtualEventTable;
|
341 |
/* The virtual events that exist in this
|
342 |
* interpreter. */
|
343 |
ScreenInfo screenInfo; /* Keeps track of the current display and
|
344 |
* screen, so it can be restored after
|
345 |
* a binding has executed. */
|
346 |
PendingBinding *pendingList;/* The list of pending C bindings, kept in
|
347 |
* case a C or Tcl binding causes the target
|
348 |
* window to be deleted. */
|
349 |
int deleted; /* 1 the application has been deleted but
|
350 |
* the structure has been preserved. */
|
351 |
} BindInfo;
|
352 |
|
353 |
/*
|
354 |
* In X11R4 and earlier versions, XStringToKeysym is ridiculously
|
355 |
* slow. The data structure and hash table below, along with the
|
356 |
* code that uses them, implement a fast mapping from strings to
|
357 |
* keysyms. In X11R5 and later releases XStringToKeysym is plenty
|
358 |
* fast so this stuff isn't needed. The #define REDO_KEYSYM_LOOKUP
|
359 |
* is normally undefined, so that XStringToKeysym gets used. It
|
360 |
* can be set in the Makefile to enable the use of the hash table
|
361 |
* below.
|
362 |
*/
|
363 |
|
364 |
#ifdef REDO_KEYSYM_LOOKUP
|
365 |
typedef struct {
|
366 |
char *name; /* Name of keysym. */
|
367 |
KeySym value; /* Numeric identifier for keysym. */
|
368 |
} KeySymInfo;
|
369 |
static KeySymInfo keyArray[] = {
|
370 |
#ifndef lint
|
371 |
#include "ks_names.h"
|
372 |
#endif
|
373 |
{(char *) NULL, 0}
|
374 |
};
|
375 |
static Tcl_HashTable keySymTable; /* keyArray hashed by keysym value. */
|
376 |
static Tcl_HashTable nameTable; /* keyArray hashed by keysym name. */
|
377 |
#endif /* REDO_KEYSYM_LOOKUP */
|
378 |
|
379 |
/*
|
380 |
* Set to non-zero when the package-wide static variables have been
|
381 |
* initialized.
|
382 |
*/
|
383 |
|
384 |
static int initialized = 0;
|
385 |
TCL_DECLARE_MUTEX(bindMutex)
|
386 |
|
387 |
/*
|
388 |
* A hash table is kept to map from the string names of event
|
389 |
* modifiers to information about those modifiers. The structure
|
390 |
* for storing this information, and the hash table built at
|
391 |
* initialization time, are defined below.
|
392 |
*/
|
393 |
|
394 |
typedef struct {
|
395 |
char *name; /* Name of modifier. */
|
396 |
int mask; /* Button/modifier mask value, * such as Button1Mask. */
|
397 |
int flags; /* Various flags; see below for
|
398 |
* definitions. */
|
399 |
} ModInfo;
|
400 |
|
401 |
/*
|
402 |
* Flags for ModInfo structures:
|
403 |
*
|
404 |
* DOUBLE - Non-zero means duplicate this event,
|
405 |
* e.g. for double-clicks.
|
406 |
* TRIPLE - Non-zero means triplicate this event,
|
407 |
* e.g. for triple-clicks.
|
408 |
* QUADRUPLE - Non-zero means quadruple this event,
|
409 |
* e.g. for 4-fold-clicks.
|
410 |
* MULT_CLICKS - Combination of all of above.
|
411 |
*/
|
412 |
|
413 |
#define DOUBLE 1
|
414 |
#define TRIPLE 2
|
415 |
#define QUADRUPLE 4
|
416 |
#define MULT_CLICKS 7
|
417 |
|
418 |
static ModInfo modArray[] = {
|
419 |
{"Control", ControlMask, 0},
|
420 |
{"Shift", ShiftMask, 0},
|
421 |
{"Lock", LockMask, 0},
|
422 |
{"Meta", META_MASK, 0},
|
423 |
{"M", META_MASK, 0},
|
424 |
{"Alt", ALT_MASK, 0},
|
425 |
{"B1", Button1Mask, 0},
|
426 |
{"Button1", Button1Mask, 0},
|
427 |
{"B2", Button2Mask, 0},
|
428 |
{"Button2", Button2Mask, 0},
|
429 |
{"B3", Button3Mask, 0},
|
430 |
{"Button3", Button3Mask, 0},
|
431 |
{"B4", Button4Mask, 0},
|
432 |
{"Button4", Button4Mask, 0},
|
433 |
{"B5", Button5Mask, 0},
|
434 |
{"Button5", Button5Mask, 0},
|
435 |
{"Mod1", Mod1Mask, 0},
|
436 |
{"M1", Mod1Mask, 0},
|
437 |
{"Command", Mod1Mask, 0},
|
438 |
{"Mod2", Mod2Mask, 0},
|
439 |
{"M2", Mod2Mask, 0},
|
440 |
{"Option", Mod2Mask, 0},
|
441 |
{"Mod3", Mod3Mask, 0},
|
442 |
{"M3", Mod3Mask, 0},
|
443 |
{"Mod4", Mod4Mask, 0},
|
444 |
{"M4", Mod4Mask, 0},
|
445 |
{"Mod5", Mod5Mask, 0},
|
446 |
{"M5", Mod5Mask, 0},
|
447 |
{"Double", 0, DOUBLE},
|
448 |
{"Triple", 0, TRIPLE},
|
449 |
{"Quadruple", 0, QUADRUPLE},
|
450 |
{"Any", 0, 0}, /* Ignored: historical relic. */
|
451 |
{NULL, 0, 0}
|
452 |
};
|
453 |
static Tcl_HashTable modTable;
|
454 |
|
455 |
/*
|
456 |
* This module also keeps a hash table mapping from event names
|
457 |
* to information about those events. The structure, an array
|
458 |
* to use to initialize the hash table, and the hash table are
|
459 |
* all defined below.
|
460 |
*/
|
461 |
|
462 |
typedef struct {
|
463 |
char *name; /* Name of event. */
|
464 |
int type; /* Event type for X, such as
|
465 |
* ButtonPress. */
|
466 |
int eventMask; /* Mask bits (for XSelectInput)
|
467 |
* for this event type. */
|
468 |
} EventInfo;
|
469 |
|
470 |
/*
|
471 |
* Note: some of the masks below are an OR-ed combination of
|
472 |
* several masks. This is necessary because X doesn't report
|
473 |
* up events unless you also ask for down events. Also, X
|
474 |
* doesn't report button state in motion events unless you've
|
475 |
* asked about button events.
|
476 |
*/
|
477 |
|
478 |
static EventInfo eventArray[] = {
|
479 |
{"Key", KeyPress, KeyPressMask},
|
480 |
{"KeyPress", KeyPress, KeyPressMask},
|
481 |
{"KeyRelease", KeyRelease, KeyPressMask|KeyReleaseMask},
|
482 |
{"Button", ButtonPress, ButtonPressMask},
|
483 |
{"ButtonPress", ButtonPress, ButtonPressMask},
|
484 |
{"ButtonRelease", ButtonRelease,
|
485 |
ButtonPressMask|ButtonReleaseMask},
|
486 |
{"Motion", MotionNotify,
|
487 |
ButtonPressMask|PointerMotionMask},
|
488 |
{"Enter", EnterNotify, EnterWindowMask},
|
489 |
{"Leave", LeaveNotify, LeaveWindowMask},
|
490 |
{"FocusIn", FocusIn, FocusChangeMask},
|
491 |
{"FocusOut", FocusOut, FocusChangeMask},
|
492 |
{"Expose", Expose, ExposureMask},
|
493 |
{"Visibility", VisibilityNotify, VisibilityChangeMask},
|
494 |
{"Destroy", DestroyNotify, StructureNotifyMask},
|
495 |
{"Unmap", UnmapNotify, StructureNotifyMask},
|
496 |
{"Map", MapNotify, StructureNotifyMask},
|
497 |
{"Reparent", ReparentNotify, StructureNotifyMask},
|
498 |
{"Configure", ConfigureNotify, StructureNotifyMask},
|
499 |
{"Gravity", GravityNotify, StructureNotifyMask},
|
500 |
{"Circulate", CirculateNotify, StructureNotifyMask},
|
501 |
{"Property", PropertyNotify, PropertyChangeMask},
|
502 |
{"Colormap", ColormapNotify, ColormapChangeMask},
|
503 |
{"Activate", ActivateNotify, ActivateMask},
|
504 |
{"Deactivate", DeactivateNotify, ActivateMask},
|
505 |
{"MouseWheel", MouseWheelEvent, MouseWheelMask},
|
506 |
{(char *) NULL, 0, 0}
|
507 |
};
|
508 |
static Tcl_HashTable eventTable;
|
509 |
|
510 |
/*
|
511 |
* The defines and table below are used to classify events into
|
512 |
* various groups. The reason for this is that logically identical
|
513 |
* fields (e.g. "state") appear at different places in different
|
514 |
* types of events. The classification masks can be used to figure
|
515 |
* out quickly where to extract information from events.
|
516 |
*/
|
517 |
|
518 |
#define KEY 0x1
|
519 |
#define BUTTON 0x2
|
520 |
#define MOTION 0x4
|
521 |
#define CROSSING 0x8
|
522 |
#define FOCUS 0x10
|
523 |
#define EXPOSE 0x20
|
524 |
#define VISIBILITY 0x40
|
525 |
#define CREATE 0x80
|
526 |
#define DESTROY 0x100
|
527 |
#define UNMAP 0x200
|
528 |
#define MAP 0x400
|
529 |
#define REPARENT 0x800
|
530 |
#define CONFIG 0x1000
|
531 |
#define GRAVITY 0x2000
|
532 |
#define CIRC 0x4000
|
533 |
#define PROP 0x8000
|
534 |
#define COLORMAP 0x10000
|
535 |
#define VIRTUAL 0x20000
|
536 |
#define ACTIVATE 0x40000
|
537 |
|
538 |
#define KEY_BUTTON_MOTION_VIRTUAL (KEY|BUTTON|MOTION|VIRTUAL)
|
539 |
|
540 |
static int flagArray[TK_LASTEVENT] = {
|
541 |
/* Not used */ 0,
|
542 |
/* Not used */ 0,
|
543 |
/* KeyPress */ KEY,
|
544 |
/* KeyRelease */ KEY,
|
545 |
/* ButtonPress */ BUTTON,
|
546 |
/* ButtonRelease */ BUTTON,
|
547 |
/* MotionNotify */ MOTION,
|
548 |
/* EnterNotify */ CROSSING,
|
549 |
/* LeaveNotify */ CROSSING,
|
550 |
/* FocusIn */ FOCUS,
|
551 |
/* FocusOut */ FOCUS,
|
552 |
/* KeymapNotify */ 0,
|
553 |
/* Expose */ EXPOSE,
|
554 |
/* GraphicsExpose */ EXPOSE,
|
555 |
/* NoExpose */ 0,
|
556 |
/* VisibilityNotify */ VISIBILITY,
|
557 |
/* CreateNotify */ CREATE,
|
558 |
/* DestroyNotify */ DESTROY,
|
559 |
/* UnmapNotify */ UNMAP,
|
560 |
/* MapNotify */ MAP,
|
561 |
/* MapRequest */ 0,
|
562 |
/* ReparentNotify */ REPARENT,
|
563 |
/* ConfigureNotify */ CONFIG,
|
564 |
/* ConfigureRequest */ 0,
|
565 |
/* GravityNotify */ GRAVITY,
|
566 |
/* ResizeRequest */ 0,
|
567 |
/* CirculateNotify */ CIRC,
|
568 |
/* CirculateRequest */ 0,
|
569 |
/* PropertyNotify */ PROP,
|
570 |
/* SelectionClear */ 0,
|
571 |
/* SelectionRequest */ 0,
|
572 |
/* SelectionNotify */ 0,
|
573 |
/* ColormapNotify */ COLORMAP,
|
574 |
/* ClientMessage */ 0,
|
575 |
/* MappingNotify */ 0,
|
576 |
/* VirtualEvent */ VIRTUAL,
|
577 |
/* Activate */ ACTIVATE,
|
578 |
/* Deactivate */ ACTIVATE,
|
579 |
/* MouseWheel */ KEY
|
580 |
};
|
581 |
|
582 |
/*
|
583 |
* The following table is used to map between the location where an
|
584 |
* generated event should be queued and the string used to specify the
|
585 |
* location.
|
586 |
*/
|
587 |
|
588 |
static TkStateMap queuePosition[] = {
|
589 |
{-1, "now"},
|
590 |
{TCL_QUEUE_HEAD, "head"},
|
591 |
{TCL_QUEUE_MARK, "mark"},
|
592 |
{TCL_QUEUE_TAIL, "tail"},
|
593 |
{-2, NULL}
|
594 |
};
|
595 |
|
596 |
/*
|
597 |
* The following tables are used as a two-way map between X's internal
|
598 |
* numeric values for fields in an XEvent and the strings used in Tcl. The
|
599 |
* tables are used both when constructing an XEvent from user input and
|
600 |
* when providing data from an XEvent to the user.
|
601 |
*/
|
602 |
|
603 |
static TkStateMap notifyMode[] = {
|
604 |
{NotifyNormal, "NotifyNormal"},
|
605 |
{NotifyGrab, "NotifyGrab"},
|
606 |
{NotifyUngrab, "NotifyUngrab"},
|
607 |
{NotifyWhileGrabbed, "NotifyWhileGrabbed"},
|
608 |
{-1, NULL}
|
609 |
};
|
610 |
|
611 |
static TkStateMap notifyDetail[] = {
|
612 |
{NotifyAncestor, "NotifyAncestor"},
|
613 |
{NotifyVirtual, "NotifyVirtual"},
|
614 |
{NotifyInferior, "NotifyInferior"},
|
615 |
{NotifyNonlinear, "NotifyNonlinear"},
|
616 |
{NotifyNonlinearVirtual, "NotifyNonlinearVirtual"},
|
617 |
{NotifyPointer, "NotifyPointer"},
|
618 |
{NotifyPointerRoot, "NotifyPointerRoot"},
|
619 |
{NotifyDetailNone, "NotifyDetailNone"},
|
620 |
{-1, NULL}
|
621 |
};
|
622 |
|
623 |
static TkStateMap circPlace[] = {
|
624 |
{PlaceOnTop, "PlaceOnTop"},
|
625 |
{PlaceOnBottom, "PlaceOnBottom"},
|
626 |
{-1, NULL}
|
627 |
};
|
628 |
|
629 |
static TkStateMap visNotify[] = {
|
630 |
{VisibilityUnobscured, "VisibilityUnobscured"},
|
631 |
{VisibilityPartiallyObscured, "VisibilityPartiallyObscured"},
|
632 |
{VisibilityFullyObscured, "VisibilityFullyObscured"},
|
633 |
{-1, NULL}
|
634 |
};
|
635 |
|
636 |
/*
|
637 |
* Prototypes for local procedures defined in this file:
|
638 |
*/
|
639 |
|
640 |
static void ChangeScreen _ANSI_ARGS_((Tcl_Interp *interp,
|
641 |
char *dispName, int screenIndex));
|
642 |
static int CreateVirtualEvent _ANSI_ARGS_((Tcl_Interp *interp,
|
643 |
VirtualEventTable *vetPtr, char *virtString,
|
644 |
char *eventString));
|
645 |
static int DeleteVirtualEvent _ANSI_ARGS_((Tcl_Interp *interp,
|
646 |
VirtualEventTable *vetPtr, char *virtString,
|
647 |
char *eventString));
|
648 |
static void DeleteVirtualEventTable _ANSI_ARGS_((
|
649 |
VirtualEventTable *vetPtr));
|
650 |
static void ExpandPercents _ANSI_ARGS_((TkWindow *winPtr,
|
651 |
char *before, XEvent *eventPtr, KeySym keySym,
|
652 |
Tcl_DString *dsPtr));
|
653 |
static void FreeTclBinding _ANSI_ARGS_((ClientData clientData));
|
654 |
static PatSeq * FindSequence _ANSI_ARGS_((Tcl_Interp *interp,
|
655 |
Tcl_HashTable *patternTablePtr, ClientData object,
|
656 |
char *eventString, int create, int allowVirtual,
|
657 |
unsigned long *maskPtr));
|
658 |
static void GetAllVirtualEvents _ANSI_ARGS_((Tcl_Interp *interp,
|
659 |
VirtualEventTable *vetPtr));
|
660 |
static char * GetField _ANSI_ARGS_((char *p, char *copy, int size));
|
661 |
static void GetPatternString _ANSI_ARGS_((PatSeq *psPtr,
|
662 |
Tcl_DString *dsPtr));
|
663 |
static int GetVirtualEvent _ANSI_ARGS_((Tcl_Interp *interp,
|
664 |
VirtualEventTable *vetPtr, char *virtString));
|
665 |
static Tk_Uid GetVirtualEventUid _ANSI_ARGS_((Tcl_Interp *interp,
|
666 |
char *virtString));
|
667 |
static int HandleEventGenerate _ANSI_ARGS_((Tcl_Interp *interp,
|
668 |
Tk_Window main, int objc,
|
669 |
Tcl_Obj *CONST objv[]));
|
670 |
static void InitVirtualEventTable _ANSI_ARGS_((
|
671 |
VirtualEventTable *vetPtr));
|
672 |
static PatSeq * MatchPatterns _ANSI_ARGS_((TkDisplay *dispPtr,
|
673 |
BindingTable *bindPtr, PatSeq *psPtr,
|
674 |
PatSeq *bestPtr, ClientData *objectPtr,
|
675 |
PatSeq **sourcePtrPtr));
|
676 |
static int NameToWindow _ANSI_ARGS_((Tcl_Interp *interp,
|
677 |
Tk_Window main, Tcl_Obj *objPtr,
|
678 |
Tk_Window *tkwinPtr));
|
679 |
static int ParseEventDescription _ANSI_ARGS_((Tcl_Interp *interp,
|
680 |
char **eventStringPtr, Pattern *patPtr,
|
681 |
unsigned long *eventMaskPtr));
|
682 |
static void DoWarp _ANSI_ARGS_((ClientData clientData));
|
683 |
|
684 |
/*
|
685 |
* The following define is used as a short circuit for the callback
|
686 |
* procedure to evaluate a TclBinding. The actual evaluation of the
|
687 |
* binding is handled inline, because special things have to be done
|
688 |
* with a Tcl binding before evaluation time.
|
689 |
*/
|
690 |
|
691 |
#define EvalTclBinding ((TkBindEvalProc *) 1)
|
692 |
|
693 |
|
694 |
/*
|
695 |
*---------------------------------------------------------------------------
|
696 |
*
|
697 |
* TkBindInit --
|
698 |
*
|
699 |
* This procedure is called when an application is created. It
|
700 |
* initializes all the structures used by bindings and virtual
|
701 |
* events. It must be called before any other functions in this
|
702 |
* file are called.
|
703 |
*
|
704 |
* Results:
|
705 |
* None.
|
706 |
*
|
707 |
* Side effects:
|
708 |
* Memory allocated.
|
709 |
*
|
710 |
*---------------------------------------------------------------------------
|
711 |
*/
|
712 |
|
713 |
void
|
714 |
TkBindInit(mainPtr)
|
715 |
TkMainInfo *mainPtr; /* The newly created application. */
|
716 |
{
|
717 |
BindInfo *bindInfoPtr;
|
718 |
|
719 |
if (sizeof(XEvent) < sizeof(XVirtualEvent)) {
|
720 |
panic("TkBindInit: virtual events can't be supported");
|
721 |
}
|
722 |
|
723 |
/*
|
724 |
* Initialize the static data structures used by the binding package.
|
725 |
* They are only initialized once, no matter how many interps are
|
726 |
* created.
|
727 |
*/
|
728 |
|
729 |
if (!initialized) {
|
730 |
Tcl_MutexLock(&bindMutex);
|
731 |
if (!initialized) {
|
732 |
Tcl_HashEntry *hPtr;
|
733 |
ModInfo *modPtr;
|
734 |
EventInfo *eiPtr;
|
735 |
int dummy;
|
736 |
|
737 |
#ifdef REDO_KEYSYM_LOOKUP
|
738 |
KeySymInfo *kPtr;
|
739 |
|
740 |
Tcl_InitHashTable(&keySymTable, TCL_STRING_KEYS);
|
741 |
Tcl_InitHashTable(&nameTable, TCL_ONE_WORD_KEYS);
|
742 |
for (kPtr = keyArray; kPtr->name != NULL; kPtr++) {
|
743 |
hPtr = Tcl_CreateHashEntry(&keySymTable, kPtr->name, &dummy);
|
744 |
Tcl_SetHashValue(hPtr, kPtr->value);
|
745 |
hPtr = Tcl_CreateHashEntry(&nameTable, (char *) kPtr->value,
|
746 |
&dummy);
|
747 |
Tcl_SetHashValue(hPtr, kPtr->name);
|
748 |
}
|
749 |
#endif /* REDO_KEYSYM_LOOKUP */
|
750 |
|
751 |
Tcl_InitHashTable(&modTable, TCL_STRING_KEYS);
|
752 |
for (modPtr = modArray; modPtr->name != NULL; modPtr++) {
|
753 |
hPtr = Tcl_CreateHashEntry(&modTable, modPtr->name, &dummy);
|
754 |
Tcl_SetHashValue(hPtr, modPtr);
|
755 |
}
|
756 |
|
757 |
Tcl_InitHashTable(&eventTable, TCL_STRING_KEYS);
|
758 |
for (eiPtr = eventArray; eiPtr->name != NULL; eiPtr++) {
|
759 |
hPtr = Tcl_CreateHashEntry(&eventTable, eiPtr->name, &dummy);
|
760 |
Tcl_SetHashValue(hPtr, eiPtr);
|
761 |
}
|
762 |
initialized = 1;
|
763 |
}
|
764 |
Tcl_MutexUnlock(&bindMutex);
|
765 |
}
|
766 |
|
767 |
mainPtr->bindingTable = Tk_CreateBindingTable(mainPtr->interp);
|
768 |
|
769 |
bindInfoPtr = (BindInfo *) ckalloc(sizeof(BindInfo));
|
770 |
InitVirtualEventTable(&bindInfoPtr->virtualEventTable);
|
771 |
bindInfoPtr->screenInfo.curDispPtr = NULL;
|
772 |
bindInfoPtr->screenInfo.curScreenIndex = -1;
|
773 |
bindInfoPtr->screenInfo.bindingDepth = 0;
|
774 |
bindInfoPtr->pendingList = NULL;
|
775 |
bindInfoPtr->deleted = 0;
|
776 |
mainPtr->bindInfo = (TkBindInfo) bindInfoPtr;
|
777 |
|
778 |
TkpInitializeMenuBindings(mainPtr->interp, mainPtr->bindingTable);
|
779 |
}
|
780 |
|
781 |
/*
|
782 |
*---------------------------------------------------------------------------
|
783 |
*
|
784 |
* TkBindFree --
|
785 |
*
|
786 |
* This procedure is called when an application is deleted. It
|
787 |
* deletes all the structures used by bindings and virtual events.
|
788 |
*
|
789 |
* Results:
|
790 |
* None.
|
791 |
*
|
792 |
* Side effects:
|
793 |
* Memory freed.
|
794 |
*
|
795 |
*---------------------------------------------------------------------------
|
796 |
*/
|
797 |
|
798 |
void
|
799 |
TkBindFree(mainPtr)
|
800 |
TkMainInfo *mainPtr; /* The newly created application. */
|
801 |
{
|
802 |
BindInfo *bindInfoPtr;
|
803 |
|
804 |
Tk_DeleteBindingTable(mainPtr->bindingTable);
|
805 |
mainPtr->bindingTable = NULL;
|
806 |
|
807 |
bindInfoPtr = (BindInfo *) mainPtr->bindInfo;
|
808 |
DeleteVirtualEventTable(&bindInfoPtr->virtualEventTable);
|
809 |
bindInfoPtr->deleted = 1;
|
810 |
Tcl_EventuallyFree((ClientData) bindInfoPtr, Tcl_Free);
|
811 |
mainPtr->bindInfo = NULL;
|
812 |
}
|
813 |
|
814 |
/*
|
815 |
*--------------------------------------------------------------
|
816 |
*
|
817 |
* Tk_CreateBindingTable --
|
818 |
*
|
819 |
* Set up a new domain in which event bindings may be created.
|
820 |
*
|
821 |
* Results:
|
822 |
* The return value is a token for the new table, which must
|
823 |
* be passed to procedures like Tk_CreateBinding.
|
824 |
*
|
825 |
* Side effects:
|
826 |
* Memory is allocated for the new table.
|
827 |
*
|
828 |
*--------------------------------------------------------------
|
829 |
*/
|
830 |
|
831 |
Tk_BindingTable
|
832 |
Tk_CreateBindingTable(interp)
|
833 |
Tcl_Interp *interp; /* Interpreter to associate with the binding
|
834 |
* table: commands are executed in this
|
835 |
* interpreter. */
|
836 |
{
|
837 |
BindingTable *bindPtr;
|
838 |
int i;
|
839 |
|
840 |
/*
|
841 |
* Create and initialize a new binding table.
|
842 |
*/
|
843 |
|
844 |
bindPtr = (BindingTable *) ckalloc(sizeof(BindingTable));
|
845 |
for (i = 0; i < EVENT_BUFFER_SIZE; i++) {
|
846 |
bindPtr->eventRing[i].type = -1;
|
847 |
}
|
848 |
bindPtr->curEvent = 0;
|
849 |
Tcl_InitHashTable(&bindPtr->patternTable,
|
850 |
sizeof(PatternTableKey)/sizeof(int));
|
851 |
Tcl_InitHashTable(&bindPtr->objectTable, TCL_ONE_WORD_KEYS);
|
852 |
bindPtr->interp = interp;
|
853 |
return (Tk_BindingTable) bindPtr;
|
854 |
}
|
855 |
|
856 |
/*
|
857 |
*--------------------------------------------------------------
|
858 |
*
|
859 |
* Tk_DeleteBindingTable --
|
860 |
*
|
861 |
* Destroy a binding table and free up all its memory.
|
862 |
* The caller should not use bindingTable again after
|
863 |
* this procedure returns.
|
864 |
*
|
865 |
* Results:
|
866 |
* None.
|
867 |
*
|
868 |
* Side effects:
|
869 |
* Memory is freed.
|
870 |
*
|
871 |
*--------------------------------------------------------------
|
872 |
*/
|
873 |
|
874 |
void
|
875 |
Tk_DeleteBindingTable(bindingTable)
|
876 |
Tk_BindingTable bindingTable; /* Token for the binding table to
|
877 |
* destroy. */
|
878 |
{
|
879 |
BindingTable *bindPtr = (BindingTable *) bindingTable;
|
880 |
PatSeq *psPtr, *nextPtr;
|
881 |
Tcl_HashEntry *hPtr;
|
882 |
Tcl_HashSearch search;
|
883 |
|
884 |
/*
|
885 |
* Find and delete all of the patterns associated with the binding
|
886 |
* table.
|
887 |
*/
|
888 |
|
889 |
for (hPtr = Tcl_FirstHashEntry(&bindPtr->patternTable, &search);
|
890 |
hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
|
891 |
for (psPtr = (PatSeq *) Tcl_GetHashValue(hPtr);
|
892 |
psPtr != NULL; psPtr = nextPtr) {
|
893 |
nextPtr = psPtr->nextSeqPtr;
|
894 |
psPtr->flags |= MARKED_DELETED;
|
895 |
if (psPtr->refCount == 0) {
|
896 |
if (psPtr->freeProc != NULL) {
|
897 |
(*psPtr->freeProc)(psPtr->clientData);
|
898 |
}
|
899 |
ckfree((char *) psPtr);
|
900 |
}
|
901 |
}
|
902 |
}
|
903 |
|
904 |
/*
|
905 |
* Clean up the rest of the information associated with the
|
906 |
* binding table.
|
907 |
*/
|
908 |
|
909 |
Tcl_DeleteHashTable(&bindPtr->patternTable);
|
910 |
Tcl_DeleteHashTable(&bindPtr->objectTable);
|
911 |
ckfree((char *) bindPtr);
|
912 |
}
|
913 |
|
914 |
/*
|
915 |
*--------------------------------------------------------------
|
916 |
*
|
917 |
* Tk_CreateBinding --
|
918 |
*
|
919 |
* Add a binding to a binding table, so that future calls to
|
920 |
* Tk_BindEvent may execute the command in the binding.
|
921 |
*
|
922 |
* Results:
|
923 |
* The return value is 0 if an error occurred while setting
|
924 |
* up the binding. In this case, an error message will be
|
925 |
* left in the interp's result. If all went well then the return
|
926 |
* value is a mask of the event types that must be made
|
927 |
* available to Tk_BindEvent in order to properly detect when
|
928 |
* this binding triggers. This value can be used to determine
|
929 |
* what events to select for in a window, for example.
|
930 |
*
|
931 |
* Side effects:
|
932 |
* An existing binding on the same event sequence may be
|
933 |
* replaced.
|
934 |
* The new binding may cause future calls to Tk_BindEvent to
|
935 |
* behave differently than they did previously.
|
936 |
*
|
937 |
*--------------------------------------------------------------
|
938 |
*/
|
939 |
|
940 |
unsigned long
|
941 |
Tk_CreateBinding(interp, bindingTable, object, eventString, command, append)
|
942 |
Tcl_Interp *interp; /* Used for error reporting. */
|
943 |
Tk_BindingTable bindingTable;
|
944 |
/* Table in which to create binding. */
|
945 |
ClientData object; /* Token for object with which binding is
|
946 |
* associated. */
|
947 |
char *eventString; /* String describing event sequence that
|
948 |
* triggers binding. */
|
949 |
char *command; /* Contains Tcl command to execute when
|
950 |
* binding triggers. */
|
951 |
int append; /* 0 means replace any existing binding for
|
952 |
* eventString; 1 means append to that
|
953 |
* binding. If the existing binding is for a
|
954 |
* callback function and not a Tcl command
|
955 |
* string, the existing binding will always be
|
956 |
* replaced. */
|
957 |
{
|
958 |
BindingTable *bindPtr = (BindingTable *) bindingTable;
|
959 |
PatSeq *psPtr;
|
960 |
unsigned long eventMask;
|
961 |
char *new, *old;
|
962 |
|
963 |
psPtr = FindSequence(interp, &bindPtr->patternTable, object, eventString,
|
964 |
1, 1, &eventMask);
|
965 |
if (psPtr == NULL) {
|
966 |
return 0;
|
967 |
}
|
968 |
if (psPtr->eventProc == NULL) {
|
969 |
int new;
|
970 |
Tcl_HashEntry *hPtr;
|
971 |
|
972 |
/*
|
973 |
* This pattern sequence was just created.
|
974 |
* Link the pattern into the list associated with the object, so
|
975 |
* that if the object goes away, these bindings will all
|
976 |
* automatically be deleted.
|
977 |
*/
|
978 |
|
979 |
hPtr = Tcl_CreateHashEntry(&bindPtr->objectTable, (char *) object,
|
980 |
&new);
|
981 |
if (new) {
|
982 |
psPtr->nextObjPtr = NULL;
|
983 |
} else {
|
984 |
psPtr->nextObjPtr = (PatSeq *) Tcl_GetHashValue(hPtr);
|
985 |
}
|
986 |
Tcl_SetHashValue(hPtr, psPtr);
|
987 |
} else if (psPtr->eventProc != EvalTclBinding) {
|
988 |
/*
|
989 |
* Free existing procedural binding.
|
990 |
*/
|
991 |
|
992 |
if (psPtr->freeProc != NULL) {
|
993 |
(*psPtr->freeProc)(psPtr->clientData);
|
994 |
}
|
995 |
psPtr->clientData = NULL;
|
996 |
append = 0;
|
997 |
}
|
998 |
|
999 |
old = (char *) psPtr->clientData;
|
1000 |
if ((append != 0) && (old != NULL)) {
|
1001 |
int length;
|
1002 |
|
1003 |
length = strlen(old) + strlen(command) + 2;
|
1004 |
new = (char *) ckalloc((unsigned) length);
|
1005 |
sprintf(new, "%s\n%s", old, command);
|
1006 |
} else {
|
1007 |
new = (char *) ckalloc((unsigned) strlen(command) + 1);
|
1008 |
strcpy(new, command);
|
1009 |
}
|
1010 |
if (old != NULL) {
|
1011 |
ckfree(old);
|
1012 |
}
|
1013 |
psPtr->eventProc = EvalTclBinding;
|
1014 |
psPtr->freeProc = FreeTclBinding;
|
1015 |
psPtr->clientData = (ClientData) new;
|
1016 |
return eventMask;
|
1017 |
}
|
1018 |
|
1019 |
/*
|
1020 |
*---------------------------------------------------------------------------
|
1021 |
*
|
1022 |
* TkCreateBindingProcedure --
|
1023 |
*
|
1024 |
* Add a C binding to a binding table, so that future calls to
|
1025 |
* Tk_BindEvent may callback the procedure in the binding.
|
1026 |
*
|
1027 |
* Results:
|
1028 |
* The return value is 0 if an error occurred while setting
|
1029 |
* up the binding. In this case, an error message will be
|
1030 |
* left in the interp's result. If all went well then the return
|
1031 |
* value is a mask of the event types that must be made
|
1032 |
* available to Tk_BindEvent in order to properly detect when
|
1033 |
* this binding triggers. This value can be used to determine
|
1034 |
* what events to select for in a window, for example.
|
1035 |
*
|
1036 |
* Side effects:
|
1037 |
* Any existing binding on the same event sequence will be
|
1038 |
* replaced.
|
1039 |
*
|
1040 |
*---------------------------------------------------------------------------
|
1041 |
*/
|
1042 |
|
1043 |
unsigned long
|
1044 |
TkCreateBindingProcedure(interp, bindingTable, object, eventString,
|
1045 |
eventProc, freeProc, clientData)
|
1046 |
Tcl_Interp *interp; /* Used for error reporting. */
|
1047 |
Tk_BindingTable bindingTable;
|
1048 |
/* Table in which to create binding. */
|
1049 |
ClientData object; /* Token for object with which binding is
|
1050 |
* associated. */
|
1051 |
char *eventString; /* String describing event sequence that
|
1052 |
* triggers binding. */
|
1053 |
TkBindEvalProc *eventProc; /* Procedure to invoke when binding
|
1054 |
* triggers. Must not be NULL. */
|
1055 |
TkBindFreeProc *freeProc; /* Procedure to invoke when binding is
|
1056 |
* freed. May be NULL for no procedure. */
|
1057 |
ClientData clientData; /* Arbitrary ClientData to pass to eventProc
|
1058 |
* and freeProc. */
|
1059 |
{
|
1060 |
BindingTable *bindPtr = (BindingTable *) bindingTable;
|
1061 |
PatSeq *psPtr;
|
1062 |
unsigned long eventMask;
|
1063 |
|
1064 |
psPtr = FindSequence(interp, &bindPtr->patternTable, object, eventString,
|
1065 |
1, 1, &eventMask);
|
1066 |
if (psPtr == NULL) {
|
1067 |
return 0;
|
1068 |
}
|
1069 |
if (psPtr->eventProc == NULL) {
|
1070 |
int new;
|
1071 |
Tcl_HashEntry *hPtr;
|
1072 |
|
1073 |
/*
|
1074 |
* This pattern sequence was just created.
|
1075 |
* Link the pattern into the list associated with the object, so
|
1076 |
* that if the object goes away, these bindings will all
|
1077 |
* automatically be deleted.
|
1078 |
*/
|
1079 |
|
1080 |
hPtr = Tcl_CreateHashEntry(&bindPtr->objectTable, (char *) object,
|
1081 |
&new);
|
1082 |
if (new) {
|
1083 |
psPtr->nextObjPtr = NULL;
|
1084 |
} else {
|
1085 |
psPtr->nextObjPtr = (PatSeq *) Tcl_GetHashValue(hPtr);
|
1086 |
}
|
1087 |
Tcl_SetHashValue(hPtr, psPtr);
|
1088 |
} else {
|
1089 |
|
1090 |
/*
|
1091 |
* Free existing callback.
|
1092 |
*/
|
1093 |
|
1094 |
if (psPtr->freeProc != NULL) {
|
1095 |
(*psPtr->freeProc)(psPtr->clientData);
|
1096 |
}
|
1097 |
}
|
1098 |
|
1099 |
psPtr->eventProc = eventProc;
|
1100 |
psPtr->freeProc = freeProc;
|
1101 |
psPtr->clientData = clientData;
|
1102 |
return eventMask;
|
1103 |
}
|
1104 |
|
1105 |
/*
|
1106 |
*--------------------------------------------------------------
|
1107 |
*
|
1108 |
* Tk_DeleteBinding --
|
1109 |
*
|
1110 |
* Remove an event binding from a binding table.
|
1111 |
*
|
1112 |
* Results:
|
1113 |
* The result is a standard Tcl return value. If an error
|
1114 |
* occurs then the interp's result will contain an error message.
|
1115 |
*
|
1116 |
* Side effects:
|
1117 |
* The binding given by object and eventString is removed
|
1118 |
* from bindingTable.
|
1119 |
*
|
1120 |
*--------------------------------------------------------------
|
1121 |
*/
|
1122 |
|
1123 |
int
|
1124 |
Tk_DeleteBinding(interp, bindingTable, object, eventString)
|
1125 |
Tcl_Interp *interp; /* Used for error reporting. */
|
1126 |
Tk_BindingTable bindingTable; /* Table in which to delete binding. */
|
1127 |
ClientData object; /* Token for object with which binding
|
1128 |
* is associated. */
|
1129 |
char *eventString; /* String describing event sequence
|
1130 |
* that triggers binding. */
|
1131 |
{
|
1132 |
BindingTable *bindPtr = (BindingTable *) bindingTable;
|
1133 |
PatSeq *psPtr, *prevPtr;
|
1134 |
unsigned long eventMask;
|
1135 |
Tcl_HashEntry *hPtr;
|
1136 |
|
1137 |
psPtr = FindSequence(interp, &bindPtr->patternTable, object, eventString,
|
1138 |
0, 1, &eventMask);
|
1139 |
if (psPtr == NULL) {
|
1140 |
Tcl_ResetResult(interp);
|
1141 |
return TCL_OK;
|
1142 |
}
|
1143 |
|
1144 |
/*
|
1145 |
* Unlink the binding from the list for its object, then from the
|
1146 |
* list for its pattern.
|
1147 |
*/
|
1148 |
|
1149 |
hPtr = Tcl_FindHashEntry(&bindPtr->objectTable, (char *) object);
|
1150 |
if (hPtr == NULL) {
|
1151 |
panic("Tk_DeleteBinding couldn't find object table entry");
|
1152 |
}
|
1153 |
prevPtr = (PatSeq *) Tcl_GetHashValue(hPtr);
|
1154 |
if (prevPtr == psPtr) {
|
1155 |
Tcl_SetHashValue(hPtr, psPtr->nextObjPtr);
|
1156 |
} else {
|
1157 |
for ( ; ; prevPtr = prevPtr->nextObjPtr) {
|
1158 |
if (prevPtr == NULL) {
|
1159 |
panic("Tk_DeleteBinding couldn't find on object list");
|
1160 |
}
|
1161 |
if (prevPtr->nextObjPtr == psPtr) {
|
1162 |
prevPtr->nextObjPtr = psPtr->nextObjPtr;
|
1163 |
break;
|
1164 |
}
|
1165 |
}
|
1166 |
}
|
1167 |
prevPtr = (PatSeq *) Tcl_GetHashValue(psPtr->hPtr);
|
1168 |
if (prevPtr == psPtr) {
|
1169 |
if (psPtr->nextSeqPtr == NULL) {
|
1170 |
Tcl_DeleteHashEntry(psPtr->hPtr);
|
1171 |
} else {
|
1172 |
Tcl_SetHashValue(psPtr->hPtr, psPtr->nextSeqPtr);
|
1173 |
}
|
1174 |
} else {
|
1175 |
for ( ; ; prevPtr = prevPtr->nextSeqPtr) {
|
1176 |
if (prevPtr == NULL) {
|
1177 |
panic("Tk_DeleteBinding couldn't find on hash chain");
|
1178 |
}
|
1179 |
if (prevPtr->nextSeqPtr == psPtr) {
|
1180 |
prevPtr->nextSeqPtr = psPtr->nextSeqPtr;
|
1181 |
break;
|
1182 |
}
|
1183 |
}
|
1184 |
}
|
1185 |
|
1186 |
psPtr->flags |= MARKED_DELETED;
|
1187 |
if (psPtr->refCount == 0) {
|
1188 |
if (psPtr->freeProc != NULL) {
|
1189 |
(*psPtr->freeProc)(psPtr->clientData);
|
1190 |
}
|
1191 |
ckfree((char *) psPtr);
|
1192 |
}
|
1193 |
return TCL_OK;
|
1194 |
}
|
1195 |
|
1196 |
/*
|
1197 |
*--------------------------------------------------------------
|
1198 |
*
|
1199 |
* Tk_GetBinding --
|
1200 |
*
|
1201 |
* Return the command associated with a given event string.
|
1202 |
*
|
1203 |
* Results:
|
1204 |
* The return value is a pointer to the command string
|
1205 |
* associated with eventString for object in the domain
|
1206 |
* given by bindingTable. If there is no binding for
|
1207 |
* eventString, or if eventString is improperly formed,
|
1208 |
* then NULL is returned and an error message is left in
|
1209 |
* the interp's result. The return value is semi-static: it
|
1210 |
* will persist until the binding is changed or deleted.
|
1211 |
*
|
1212 |
* Side effects:
|
1213 |
* None.
|
1214 |
*
|
1215 |
*--------------------------------------------------------------
|
1216 |
*/
|
1217 |
|
1218 |
char *
|
1219 |
Tk_GetBinding(interp, bindingTable, object, eventString)
|
1220 |
Tcl_Interp *interp; /* Interpreter for error reporting. */
|
1221 |
Tk_BindingTable bindingTable; /* Table in which to look for
|
1222 |
* binding. */
|
1223 |
ClientData object; /* Token for object with which binding
|
1224 |
* is associated. */
|
1225 |
char *eventString; /* String describing event sequence
|
1226 |
* that triggers binding. */
|
1227 |
{
|
1228 |
BindingTable *bindPtr = (BindingTable *) bindingTable;
|
1229 |
PatSeq *psPtr;
|
1230 |
unsigned long eventMask;
|
1231 |
|
1232 |
psPtr = FindSequence(interp, &bindPtr->patternTable, object, eventString,
|
1233 |
0, 1, &eventMask);
|
1234 |
if (psPtr == NULL) {
|
1235 |
return NULL;
|
1236 |
}
|
1237 |
if (psPtr->eventProc == EvalTclBinding) {
|
1238 |
return (char *) psPtr->clientData;
|
1239 |
}
|
1240 |
return "";
|
1241 |
}
|
1242 |
|
1243 |
/*
|
1244 |
*--------------------------------------------------------------
|
1245 |
*
|
1246 |
* Tk_GetAllBindings --
|
1247 |
*
|
1248 |
* Return a list of event strings for all the bindings
|
1249 |
* associated with a given object.
|
1250 |
*
|
1251 |
* Results:
|
1252 |
* There is no return value. The interp's result is modified to
|
1253 |
* hold a Tcl list with one entry for each binding associated
|
1254 |
* with object in bindingTable. Each entry in the list
|
1255 |
* contains the event string associated with one binding.
|
1256 |
*
|
1257 |
* Side effects:
|
1258 |
* None.
|
1259 |
*
|
1260 |
*--------------------------------------------------------------
|
1261 |
*/
|
1262 |
|
1263 |
void
|
1264 |
Tk_GetAllBindings(interp, bindingTable, object)
|
1265 |
Tcl_Interp *interp; /* Interpreter returning result or
|
1266 |
* error. */
|
1267 |
Tk_BindingTable bindingTable; /* Table in which to look for
|
1268 |
* bindings. */
|
1269 |
ClientData object; /* Token for object. */
|
1270 |
|
1271 |
{
|
1272 |
BindingTable *bindPtr = (BindingTable *) bindingTable;
|
1273 |
PatSeq *psPtr;
|
1274 |
Tcl_HashEntry *hPtr;
|
1275 |
Tcl_DString ds;
|
1276 |
|
1277 |
hPtr = Tcl_FindHashEntry(&bindPtr->objectTable, (char *) object);
|
1278 |
if (hPtr == NULL) {
|
1279 |
return;
|
1280 |
}
|
1281 |
Tcl_DStringInit(&ds);
|
1282 |
for (psPtr = (PatSeq *) Tcl_GetHashValue(hPtr); psPtr != NULL;
|
1283 |
psPtr = psPtr->nextObjPtr) {
|
1284 |
/*
|
1285 |
* For each binding, output information about each of the
|
1286 |
* patterns in its sequence.
|
1287 |
*/
|
1288 |
|
1289 |
Tcl_DStringSetLength(&ds, 0);
|
1290 |
GetPatternString(psPtr, &ds);
|
1291 |
Tcl_AppendElement(interp, Tcl_DStringValue(&ds));
|
1292 |
}
|
1293 |
Tcl_DStringFree(&ds);
|
1294 |
}
|
1295 |
|
1296 |
/*
|
1297 |
*--------------------------------------------------------------
|
1298 |
*
|
1299 |
* Tk_DeleteAllBindings --
|
1300 |
*
|
1301 |
* Remove all bindings associated with a given object in a
|
1302 |
* given binding table.
|
1303 |
*
|
1304 |
* Results:
|
1305 |
* All bindings associated with object are removed from
|
1306 |
* bindingTable.
|
1307 |
*
|
1308 |
* Side effects:
|
1309 |
* None.
|
1310 |
*
|
1311 |
*--------------------------------------------------------------
|
1312 |
*/
|
1313 |
|
1314 |
void
|
1315 |
Tk_DeleteAllBindings(bindingTable, object)
|
1316 |
Tk_BindingTable bindingTable; /* Table in which to delete
|
1317 |
* bindings. */
|
1318 |
ClientData object; /* Token for object. */
|
1319 |
{
|
1320 |
BindingTable *bindPtr = (BindingTable *) bindingTable;
|
1321 |
PatSeq *psPtr, *prevPtr;
|
1322 |
PatSeq *nextPtr;
|
1323 |
Tcl_HashEntry *hPtr;
|
1324 |
|
1325 |
hPtr = Tcl_FindHashEntry(&bindPtr->objectTable, (char *) object);
|
1326 |
if (hPtr == NULL) {
|
1327 |
return;
|
1328 |
}
|
1329 |
for (psPtr = (PatSeq *) Tcl_GetHashValue(hPtr); psPtr != NULL;
|
1330 |
psPtr = nextPtr) {
|
1331 |
nextPtr = psPtr->nextObjPtr;
|
1332 |
|
1333 |
/*
|
1334 |
* Be sure to remove each binding from its hash chain in the
|
1335 |
* pattern table. If this is the last pattern in the chain,
|
1336 |
* then delete the hash entry too.
|
1337 |
*/
|
1338 |
|
1339 |
prevPtr = (PatSeq *) Tcl_GetHashValue(psPtr->hPtr);
|
1340 |
if (prevPtr == psPtr) {
|
1341 |
if (psPtr->nextSeqPtr == NULL) {
|
1342 |
Tcl_DeleteHashEntry(psPtr->hPtr);
|
1343 |
} else {
|
1344 |
Tcl_SetHashValue(psPtr->hPtr, psPtr->nextSeqPtr);
|
1345 |
}
|
1346 |
} else {
|
1347 |
for ( ; ; prevPtr = prevPtr->nextSeqPtr) {
|
1348 |
if (prevPtr == NULL) {
|
1349 |
panic("Tk_DeleteAllBindings couldn't find on hash chain");
|
1350 |
}
|
1351 |
if (prevPtr->nextSeqPtr == psPtr) {
|
1352 |
prevPtr->nextSeqPtr = psPtr->nextSeqPtr;
|
1353 |
break;
|
1354 |
}
|
1355 |
}
|
1356 |
}
|
1357 |
psPtr->flags |= MARKED_DELETED;
|
1358 |
|
1359 |
if (psPtr->refCount == 0) {
|
1360 |
if (psPtr->freeProc != NULL) {
|
1361 |
(*psPtr->freeProc)(psPtr->clientData);
|
1362 |
}
|
1363 |
ckfree((char *) psPtr);
|
1364 |
}
|
1365 |
}
|
1366 |
Tcl_DeleteHashEntry(hPtr);
|
1367 |
}
|
1368 |
|
1369 |
/*
|
1370 |
*---------------------------------------------------------------------------
|
1371 |
*
|
1372 |
* Tk_BindEvent --
|
1373 |
*
|
1374 |
* This procedure is invoked to process an X event. The
|
1375 |
* event is added to those recorded for the binding table.
|
1376 |
* Then each of the objects at *objectPtr is checked in
|
1377 |
* order to see if it has a binding that matches the recent
|
1378 |
* events. If so, the most specific binding is invoked for
|
1379 |
* each object.
|
1380 |
*
|
1381 |
* Results:
|
1382 |
* None.
|
1383 |
*
|
1384 |
* Side effects:
|
1385 |
* Depends on the command associated with the matching binding.
|
1386 |
*
|
1387 |
* All Tcl bindings scripts for each object are accumulated before
|
1388 |
* the first binding is evaluated. If the action of a Tcl binding
|
1389 |
* is to change or delete a binding, or delete the window associated
|
1390 |
* with the binding, all the original Tcl binding scripts will still
|
1391 |
* fire. Contrast this with C binding procedures. If a pending C
|
1392 |
* binding (one that hasn't fired yet, but is queued to be fired for
|
1393 |
* this window) is deleted, it will not be called, and if it is
|
1394 |
* changed, then the new binding procedure will be called. If the
|
1395 |
* window itself is deleted, no further C binding procedures will be
|
1396 |
* called for this window. When both Tcl binding scripts and C binding
|
1397 |
* procedures are interleaved, the above rules still apply.
|
1398 |
*
|
1399 |
*---------------------------------------------------------------------------
|
1400 |
*/
|
1401 |
|
1402 |
void
|
1403 |
Tk_BindEvent(bindingTable, eventPtr, tkwin, numObjects, objectPtr)
|
1404 |
Tk_BindingTable bindingTable; /* Table in which to look for
|
1405 |
* bindings. */
|
1406 |
XEvent *eventPtr; /* What actually happened. */
|
1407 |
Tk_Window tkwin; /* Window on display where event
|
1408 |
* occurred (needed in order to
|
1409 |
* locate display information). */
|
1410 |
int numObjects; /* Number of objects at *objectPtr. */
|
1411 |
ClientData *objectPtr; /* Array of one or more objects
|
1412 |
* to check for a matching binding. */
|
1413 |
{
|
1414 |
BindingTable *bindPtr;
|
1415 |
TkDisplay *dispPtr;
|
1416 |
ScreenInfo *screenPtr;
|
1417 |
BindInfo *bindInfoPtr;
|
1418 |
TkDisplay *oldDispPtr;
|
1419 |
XEvent *ringPtr;
|
1420 |
PatSeq *vMatchDetailList, *vMatchNoDetailList;
|
1421 |
int flags, oldScreen, i, deferModal;
|
1422 |
unsigned int matchCount, matchSpace;
|
1423 |
Tcl_Interp *interp;
|
1424 |
Tcl_DString scripts, savedResult;
|
1425 |
Detail detail;
|
1426 |
char *p, *end;
|
1427 |
PendingBinding *pendingPtr;
|
1428 |
PendingBinding staticPending;
|
1429 |
TkWindow *winPtr = (TkWindow *)tkwin;
|
1430 |
PatternTableKey key;
|
1431 |
|
1432 |
/*
|
1433 |
* Ignore events on windows that don't have names: these are windows
|
1434 |
* like wrapper windows that shouldn't be visible to the
|
1435 |
* application.
|
1436 |
*/
|
1437 |
|
1438 |
if (winPtr->pathName == NULL) {
|
1439 |
return;
|
1440 |
}
|
1441 |
|
1442 |
/*
|
1443 |
* Ignore the event completely if it is an Enter, Leave, FocusIn,
|
1444 |
* or FocusOut event with detail NotifyInferior. The reason for
|
1445 |
* ignoring these events is that we don't want transitions between
|
1446 |
* a window and its children to visible to bindings on the parent:
|
1447 |
* this would cause problems for mega-widgets, since the internal
|
1448 |
* structure of a mega-widget isn't supposed to be visible to
|
1449 |
* people watching the parent.
|
1450 |
*/
|
1451 |
|
1452 |
if ((eventPtr->type == EnterNotify) || (eventPtr->type == LeaveNotify)) {
|
1453 |
if (eventPtr->xcrossing.detail == NotifyInferior) {
|
1454 |
return;
|
1455 |
}
|
1456 |
}
|
1457 |
if ((eventPtr->type == FocusIn) || (eventPtr->type == FocusOut)) {
|
1458 |
if (eventPtr->xfocus.detail == NotifyInferior) {
|
1459 |
return;
|
1460 |
}
|
1461 |
}
|
1462 |
|
1463 |
bindPtr = (BindingTable *) bindingTable;
|
1464 |
dispPtr = ((TkWindow *) tkwin)->dispPtr;
|
1465 |
bindInfoPtr = (BindInfo *) winPtr->mainPtr->bindInfo;
|
1466 |
|
1467 |
/*
|
1468 |
* Add the new event to the ring of saved events for the
|
1469 |
* binding table. Two tricky points:
|
1470 |
*
|
1471 |
* 1. Combine consecutive MotionNotify events. Do this by putting
|
1472 |
* the new event *on top* of the previous event.
|
1473 |
* 2. If a modifier key is held down, it auto-repeats to generate
|
1474 |
* continuous KeyPress and KeyRelease events. These can flush
|
1475 |
* the event ring so that valuable information is lost (such
|
1476 |
* as repeated button clicks). To handle this, check for the
|
1477 |
* special case of a modifier KeyPress arriving when the previous
|
1478 |
* two events are a KeyRelease and KeyPress of the same key.
|
1479 |
* If this happens, mark the most recent event (the KeyRelease)
|
1480 |
* invalid and put the new event on top of the event before that
|
1481 |
* (the KeyPress).
|
1482 |
*/
|
1483 |
|
1484 |
if ((eventPtr->type == MotionNotify)
|
1485 |
&& (bindPtr->eventRing[bindPtr->curEvent].type == MotionNotify)) {
|
1486 |
/*
|
1487 |
* Don't advance the ring pointer.
|
1488 |
*/
|
1489 |
} else if (eventPtr->type == KeyPress) {
|
1490 |
int i;
|
1491 |
for (i = 0; ; i++) {
|
1492 |
if (i >= dispPtr->numModKeyCodes) {
|
1493 |
goto advanceRingPointer;
|
1494 |
}
|
1495 |
if (dispPtr->modKeyCodes[i] == eventPtr->xkey.keycode) {
|
1496 |
break;
|
1497 |
}
|
1498 |
}
|
1499 |
ringPtr = &bindPtr->eventRing[bindPtr->curEvent];
|
1500 |
if ((ringPtr->type != KeyRelease)
|
1501 |
|| (ringPtr->xkey.keycode != eventPtr->xkey.keycode)) {
|
1502 |
goto advanceRingPointer;
|
1503 |
}
|
1504 |
if (bindPtr->curEvent <= 0) {
|
1505 |
i = EVENT_BUFFER_SIZE - 1;
|
1506 |
} else {
|
1507 |
i = bindPtr->curEvent - 1;
|
1508 |
}
|
1509 |
ringPtr = &bindPtr->eventRing[i];
|
1510 |
if ((ringPtr->type != KeyPress)
|
1511 |
|| (ringPtr->xkey.keycode != eventPtr->xkey.keycode)) {
|
1512 |
goto advanceRingPointer;
|
1513 |
}
|
1514 |
bindPtr->eventRing[bindPtr->curEvent].type = -1;
|
1515 |
bindPtr->curEvent = i;
|
1516 |
} else {
|
1517 |
advanceRingPointer:
|
1518 |
bindPtr->curEvent++;
|
1519 |
if (bindPtr->curEvent >= EVENT_BUFFER_SIZE) {
|
1520 |
bindPtr->curEvent = 0;
|
1521 |
}
|
1522 |
}
|
1523 |
ringPtr = &bindPtr->eventRing[bindPtr->curEvent];
|
1524 |
memcpy((VOID *) ringPtr, (VOID *) eventPtr, sizeof(XEvent));
|
1525 |
detail.clientData = 0;
|
1526 |
flags = flagArray[ringPtr->type];
|
1527 |
if (flags & KEY) {
|
1528 |
detail.keySym = TkpGetKeySym(dispPtr, ringPtr);
|
1529 |
if (detail.keySym == NoSymbol) {
|
1530 |
detail.keySym = 0;
|
1531 |
}
|
1532 |
} else if (flags & BUTTON) {
|
1533 |
detail.button = ringPtr->xbutton.button;
|
1534 |
} else if (flags & VIRTUAL) {
|
1535 |
detail.name = ((XVirtualEvent *) ringPtr)->name;
|
1536 |
}
|
1537 |
bindPtr->detailRing[bindPtr->curEvent] = detail;
|
1538 |
|
1539 |
/*
|
1540 |
* Find out if there are any virtual events that correspond to this
|
1541 |
* physical event (or sequence of physical events).
|
1542 |
*/
|
1543 |
|
1544 |
vMatchDetailList = NULL;
|
1545 |
vMatchNoDetailList = NULL;
|
1546 |
memset(&key, 0, sizeof(key));
|
1547 |
|
1548 |
if (ringPtr->type != VirtualEvent) {
|
1549 |
Tcl_HashTable *veptPtr;
|
1550 |
Tcl_HashEntry *hPtr;
|
1551 |
|
1552 |
veptPtr = &bindInfoPtr->virtualEventTable.patternTable;
|
1553 |
|
1554 |
key.object = NULL;
|
1555 |
key.type = ringPtr->type;
|
1556 |
key.detail = detail;
|
1557 |
|
1558 |
hPtr = Tcl_FindHashEntry(veptPtr, (char *) &key);
|
1559 |
if (hPtr != NULL) {
|
1560 |
vMatchDetailList = (PatSeq *) Tcl_GetHashValue(hPtr);
|
1561 |
}
|
1562 |
|
1563 |
if (key.detail.clientData != 0) {
|
1564 |
key.detail.clientData = 0;
|
1565 |
hPtr = Tcl_FindHashEntry(veptPtr, (char *) &key);
|
1566 |
if (hPtr != NULL) {
|
1567 |
vMatchNoDetailList = (PatSeq *) Tcl_GetHashValue(hPtr);
|
1568 |
}
|
1569 |
}
|
1570 |
}
|
1571 |
|
1572 |
/*
|
1573 |
* Loop over all the binding tags, finding the binding script or
|
1574 |
* callback for each one. Append all of the binding scripts, with
|
1575 |
* %-sequences expanded, to "scripts", with null characters separating
|
1576 |
* the scripts for each object. Append all the callbacks to the array
|
1577 |
* of pending callbacks.
|
1578 |
*/
|
1579 |
|
1580 |
pendingPtr = &staticPending;
|
1581 |
matchCount = 0;
|
1582 |
matchSpace = sizeof(staticPending.matchArray) / sizeof(PatSeq *);
|
1583 |
Tcl_DStringInit(&scripts);
|
1584 |
|
1585 |
for ( ; numObjects > 0; numObjects--, objectPtr++) {
|
1586 |
PatSeq *matchPtr, *sourcePtr;
|
1587 |
Tcl_HashEntry *hPtr;
|
1588 |
|
1589 |
matchPtr = NULL;
|
1590 |
sourcePtr = NULL;
|
1591 |
|
1592 |
/*
|
1593 |
* Match the new event against those recorded in the pattern table,
|
1594 |
* saving the longest matching pattern. For events with details
|
1595 |
* (button and key events), look for a binding for the specific
|
1596 |
* key or button. First see if the event matches a physical event
|
1597 |
* that the object is interested in, then look for a virtual event.
|
1598 |
*/
|
1599 |
|
1600 |
key.object = *objectPtr;
|
1601 |
key.type = ringPtr->type;
|
1602 |
key.detail = detail;
|
1603 |
hPtr = Tcl_FindHashEntry(&bindPtr->patternTable, (char *) &key);
|
1604 |
if (hPtr != NULL) {
|
1605 |
matchPtr = MatchPatterns(dispPtr, bindPtr,
|
1606 |
(PatSeq *) Tcl_GetHashValue(hPtr), matchPtr, NULL,
|
1607 |
&sourcePtr);
|
1608 |
}
|
1609 |
|
1610 |
if (vMatchDetailList != NULL) {
|
1611 |
matchPtr = MatchPatterns(dispPtr, bindPtr, vMatchDetailList,
|
1612 |
matchPtr, objectPtr, &sourcePtr);
|
1613 |
}
|
1614 |
|
1615 |
/*
|
1616 |
* If no match was found, look for a binding for all keys or buttons
|
1617 |
* (detail of 0). Again, first match on a virtual event.
|
1618 |
*/
|
1619 |
|
1620 |
if ((detail.clientData != 0) && (matchPtr == NULL)) {
|
1621 |
key.detail.clientData = 0;
|
1622 |
hPtr = Tcl_FindHashEntry(&bindPtr->patternTable, (char *) &key);
|
1623 |
if (hPtr != NULL) {
|
1624 |
matchPtr = MatchPatterns(dispPtr, bindPtr,
|
1625 |
(PatSeq *) Tcl_GetHashValue(hPtr), matchPtr, NULL,
|
1626 |
&sourcePtr);
|
1627 |
}
|
1628 |
|
1629 |
if (vMatchNoDetailList != NULL) {
|
1630 |
matchPtr = MatchPatterns(dispPtr, bindPtr, vMatchNoDetailList,
|
1631 |
matchPtr, objectPtr, &sourcePtr);
|
1632 |
}
|
1633 |
|
1634 |
}
|
1635 |
|
1636 |
if (matchPtr != NULL) {
|
1637 |
if (sourcePtr->eventProc == NULL) {
|
1638 |
panic("Tk_BindEvent: missing command");
|
1639 |
}
|
1640 |
if (sourcePtr->eventProc == EvalTclBinding) {
|
1641 |
ExpandPercents(winPtr, (char *) sourcePtr->clientData,
|
1642 |
eventPtr, detail.keySym, &scripts);
|
1643 |
} else {
|
1644 |
if (matchCount >= matchSpace) {
|
1645 |
PendingBinding *new;
|
1646 |
unsigned int oldSize, newSize;
|
1647 |
|
1648 |
oldSize = sizeof(staticPending)
|
1649 |
- sizeof(staticPending.matchArray)
|
1650 |
+ matchSpace * sizeof(PatSeq*);
|
1651 |
matchSpace *= 2;
|
1652 |
newSize = sizeof(staticPending)
|
1653 |
- sizeof(staticPending.matchArray)
|
1654 |
+ matchSpace * sizeof(PatSeq*);
|
1655 |
new = (PendingBinding *) ckalloc(newSize);
|
1656 |
memcpy((VOID *) new, (VOID *) pendingPtr, oldSize);
|
1657 |
if (pendingPtr != &staticPending) {
|
1658 |
ckfree((char *) pendingPtr);
|
1659 |
}
|
1660 |
pendingPtr = new;
|
1661 |
}
|
1662 |
sourcePtr->refCount++;
|
1663 |
pendingPtr->matchArray[matchCount] = sourcePtr;
|
1664 |
matchCount++;
|
1665 |
}
|
1666 |
/*
|
1667 |
* A "" is added to the scripts string to separate the
|
1668 |
* various scripts that should be invoked.
|
1669 |
*/
|
1670 |
|
1671 |
Tcl_DStringAppend(&scripts, "", 1);
|
1672 |
}
|
1673 |
}
|
1674 |
if (Tcl_DStringLength(&scripts) == 0) {
|
1675 |
return;
|
1676 |
}
|
1677 |
|
1678 |
/*
|
1679 |
* Now go back through and evaluate the binding for each object,
|
1680 |
* in order, dealing with "break" and "continue" exceptions
|
1681 |
* appropriately.
|
1682 |
*
|
1683 |
* There are two tricks here:
|
1684 |
* 1. Bindings can be invoked from in the middle of Tcl commands,
|
1685 |
* where the interp's result is significant (for example, a widget
|
1686 |
* might be deleted because of an error in creating it, so the
|
1687 |
* result contains an error message that is eventually going to
|
1688 |
* be returned by the creating command). To preserve the result,
|
1689 |
* we save it in a dynamic string.
|
1690 |
* 2. The binding's action can potentially delete the binding,
|
1691 |
* so bindPtr may not point to anything valid once the action
|
1692 |
* completes. Thus we have to save bindPtr->interp in a
|
1693 |
* local variable in order to restore the result.
|
1694 |
*/
|
1695 |
|
1696 |
interp = bindPtr->interp;
|
1697 |
Tcl_DStringInit(&savedResult);
|
1698 |
|
1699 |
/*
|
1700 |
* Save information about the current screen, then invoke a script
|
1701 |
* if the screen has changed.
|
1702 |
*/
|
1703 |
|
1704 |
Tcl_DStringGetResult(interp, &savedResult);
|
1705 |
screenPtr = &bindInfoPtr->screenInfo;
|
1706 |
oldDispPtr = screenPtr->curDispPtr;
|
1707 |
oldScreen = screenPtr->curScreenIndex;
|
1708 |
if ((dispPtr != screenPtr->curDispPtr)
|
1709 |
|| (Tk_ScreenNumber(tkwin) != screenPtr->curScreenIndex)) {
|
1710 |
screenPtr->curDispPtr = dispPtr;
|
1711 |
screenPtr->curScreenIndex = Tk_ScreenNumber(tkwin);
|
1712 |
ChangeScreen(interp, dispPtr->name, screenPtr->curScreenIndex);
|
1713 |
}
|
1714 |
|
1715 |
if (matchCount > 0) {
|
1716 |
/*
|
1717 |
* Remember the list of pending C binding callbacks, so we can mark
|
1718 |
* them as deleted and not call them if the act of evaluating a C
|
1719 |
* or Tcl binding deletes a C binding callback or even the whole
|
1720 |
* window.
|
1721 |
*/
|
1722 |
|
1723 |
pendingPtr->nextPtr = bindInfoPtr->pendingList;
|
1724 |
pendingPtr->tkwin = tkwin;
|
1725 |
pendingPtr->deleted = 0;
|
1726 |
bindInfoPtr->pendingList = pendingPtr;
|
1727 |
}
|
1728 |
|
1729 |
/*
|
1730 |
* Save the current value of the TK_DEFER_MODAL flag so we can
|
1731 |
* restore it at the end of the loop. Clear the flag so we can
|
1732 |
* detect any recursive requests for a modal loop.
|
1733 |
*/
|
1734 |
|
1735 |
flags = winPtr->flags;
|
1736 |
winPtr->flags &= ~TK_DEFER_MODAL;
|
1737 |
|
1738 |
p = Tcl_DStringValue(&scripts);
|
1739 |
end = p + Tcl_DStringLength(&scripts);
|
1740 |
i = 0;
|
1741 |
|
1742 |
/*
|
1743 |
* Be carefule when dereferencing screenPtr or bindInfoPtr. If we
|
1744 |
* evaluate something that destroys ".", bindInfoPtr would have been
|
1745 |
* freed, but we can tell that by first checking to see if
|
1746 |
* winPtr->mainPtr == NULL.
|
1747 |
*/
|
1748 |
|
1749 |
Tcl_Preserve((ClientData) bindInfoPtr);
|
1750 |
while (p < end) {
|
1751 |
int code;
|
1752 |
|
1753 |
if (!bindInfoPtr->deleted) {
|
1754 |
screenPtr->bindingDepth++;
|
1755 |
}
|
1756 |
Tcl_AllowExceptions(interp);
|
1757 |
|
1758 |
if (*p == '\0') {
|
1759 |
PatSeq *psPtr;
|
1760 |
|
1761 |
psPtr = pendingPtr->matchArray[i];
|
1762 |
i++;
|
1763 |
code = TCL_OK;
|
1764 |
if ((pendingPtr->deleted == 0)
|
1765 |
&& ((psPtr->flags & MARKED_DELETED) == 0)) {
|
1766 |
code = (*psPtr->eventProc)(psPtr->clientData, interp, eventPtr,
|
1767 |
tkwin, detail.keySym);
|
1768 |
}
|
1769 |
psPtr->refCount--;
|
1770 |
if ((psPtr->refCount == 0) && (psPtr->flags & MARKED_DELETED)) {
|
1771 |
if (psPtr->freeProc != NULL) {
|
1772 |
(*psPtr->freeProc)(psPtr->clientData);
|
1773 |
}
|
1774 |
ckfree((char *) psPtr);
|
1775 |
}
|
1776 |
} else {
|
1777 |
code = Tcl_GlobalEval(interp, p);
|
1778 |
p += strlen(p);
|
1779 |
}
|
1780 |
p++;
|
1781 |
|
1782 |
if (!bindInfoPtr->deleted) {
|
1783 |
screenPtr->bindingDepth--;
|
1784 |
}
|
1785 |
if (code != TCL_OK) {
|
1786 |
if (code == TCL_CONTINUE) {
|
1787 |
/*
|
1788 |
* Do nothing: just go on to the next command.
|
1789 |
*/
|
1790 |
} else if (code == TCL_BREAK) {
|
1791 |
break;
|
1792 |
} else {
|
1793 |
Tcl_AddErrorInfo(interp, "\n (command bound to event)");
|
1794 |
Tcl_BackgroundError(interp);
|
1795 |
break;
|
1796 |
}
|
1797 |
}
|
1798 |
}
|
1799 |
|
1800 |
if (matchCount > 0 && !pendingPtr->deleted) {
|
1801 |
/*
|
1802 |
* Restore the original modal flag value and invoke the modal loop
|
1803 |
* if needed.
|
1804 |
*/
|
1805 |
|
1806 |
deferModal = winPtr->flags & TK_DEFER_MODAL;
|
1807 |
winPtr->flags = (winPtr->flags & (unsigned int) ~TK_DEFER_MODAL)
|
1808 |
| (flags & TK_DEFER_MODAL);
|
1809 |
if (deferModal) {
|
1810 |
(*winPtr->classProcsPtr->modalProc)(tkwin, eventPtr);
|
1811 |
}
|
1812 |
}
|
1813 |
|
1814 |
if (!bindInfoPtr->deleted && (screenPtr->bindingDepth != 0)
|
1815 |
&& ((oldDispPtr != screenPtr->curDispPtr)
|
1816 |
|| (oldScreen != screenPtr->curScreenIndex))) {
|
1817 |
|
1818 |
/*
|
1819 |
* Some other binding script is currently executing, but its
|
1820 |
* screen is no longer current. Change the current display
|
1821 |
* back again.
|
1822 |
*/
|
1823 |
|
1824 |
screenPtr->curDispPtr = oldDispPtr;
|
1825 |
screenPtr->curScreenIndex = oldScreen;
|
1826 |
ChangeScreen(interp, oldDispPtr->name, oldScreen);
|
1827 |
}
|
1828 |
Tcl_DStringResult(interp, &savedResult);
|
1829 |
Tcl_DStringFree(&scripts);
|
1830 |
|
1831 |
if (matchCount > 0) {
|
1832 |
if (!bindInfoPtr->deleted) {
|
1833 |
/*
|
1834 |
* Delete the pending list from the list of pending scripts
|
1835 |
* for this window.
|
1836 |
*/
|
1837 |
|
1838 |
PendingBinding **curPtrPtr;
|
1839 |
|
1840 |
for (curPtrPtr = &bindInfoPtr->pendingList; ; ) {
|
1841 |
if (*curPtrPtr == pendingPtr) {
|
1842 |
*curPtrPtr = pendingPtr->nextPtr;
|
1843 |
break;
|
1844 |
}
|
1845 |
curPtrPtr = &(*curPtrPtr)->nextPtr;
|
1846 |
}
|
1847 |
}
|
1848 |
if (pendingPtr != &staticPending) {
|
1849 |
ckfree((char *) pendingPtr);
|
1850 |
}
|
1851 |
}
|
1852 |
Tcl_Release((ClientData) bindInfoPtr);
|
1853 |
}
|
1854 |
|
1855 |
/*
|
1856 |
*---------------------------------------------------------------------------
|
1857 |
*
|
1858 |
* TkBindDeadWindow --
|
1859 |
*
|
1860 |
* This procedure is invoked when it is determined that a window is
|
1861 |
* dead. It cleans up bind-related information about the window
|
1862 |
*
|
1863 |
* Results:
|
1864 |
* None.
|
1865 |
*
|
1866 |
* Side effects:
|
1867 |
* Any pending C bindings for this window are cancelled.
|
1868 |
*
|
1869 |
*---------------------------------------------------------------------------
|
1870 |
*/
|
1871 |
|
1872 |
void
|
1873 |
TkBindDeadWindow(winPtr)
|
1874 |
TkWindow *winPtr; /* The window that is being deleted. */
|
1875 |
{
|
1876 |
BindInfo *bindInfoPtr;
|
1877 |
PendingBinding *curPtr;
|
1878 |
|
1879 |
bindInfoPtr = (BindInfo *) winPtr->mainPtr->bindInfo;
|
1880 |
curPtr = bindInfoPtr->pendingList;
|
1881 |
while (curPtr != NULL) {
|
1882 |
if (curPtr->tkwin == (Tk_Window) winPtr) {
|
1883 |
curPtr->deleted = 1;
|
1884 |
}
|
1885 |
curPtr = curPtr->nextPtr;
|
1886 |
}
|
1887 |
}
|
1888 |
|
1889 |
/*
|
1890 |
*----------------------------------------------------------------------
|
1891 |
*
|
1892 |
* MatchPatterns --
|
1893 |
*
|
1894 |
* Given a list of pattern sequences and a list of recent events,
|
1895 |
* return the pattern sequence that best matches the event list,
|
1896 |
* if there is one.
|
1897 |
*
|
1898 |
* This procedure is used in two different ways. In the simplest
|
1899 |
* use, "object" is NULL and psPtr is a list of pattern sequences,
|
1900 |
* each of which corresponds to a binding. In this case, the
|
1901 |
* procedure finds the pattern sequences that match the event list
|
1902 |
* and returns the most specific of those, if there is more than one.
|
1903 |
*
|
1904 |
* In the second case, psPtr is a list of pattern sequences, each
|
1905 |
* of which corresponds to a definition for a virtual binding.
|
1906 |
* In order for one of these sequences to "match", it must match
|
1907 |
* the events (as above) but in addition there must be a binding
|
1908 |
* for its associated virtual event on the current object. The
|
1909 |
* "object" argument indicates which object the binding must be for.
|
1910 |
*
|
1911 |
* Results:
|
1912 |
* The return value is NULL if bestPtr is NULL and no pattern matches
|
1913 |
* the recent events from bindPtr. Otherwise the return value is
|
1914 |
* the most specific pattern sequence among bestPtr and all those
|
1915 |
* at psPtr that match the event list and object. If a pattern
|
1916 |
* sequence other than bestPtr is returned, then *bestCommandPtr
|
1917 |
* is filled in with a pointer to the command from the best sequence.
|
1918 |
*
|
1919 |
* Side effects:
|
1920 |
* None.
|
1921 |
*
|
1922 |
*----------------------------------------------------------------------
|
1923 |
*/
|
1924 |
static PatSeq *
|
1925 |
MatchPatterns(dispPtr, bindPtr, psPtr, bestPtr, objectPtr, sourcePtrPtr)
|
1926 |
TkDisplay *dispPtr; /* Display from which the event came. */
|
1927 |
BindingTable *bindPtr; /* Information about binding table, such as
|
1928 |
* ring of recent events. */
|
1929 |
PatSeq *psPtr; /* List of pattern sequences. */
|
1930 |
PatSeq *bestPtr; /* The best match seen so far, from a
|
1931 |
* previous call to this procedure. NULL
|
1932 |
* means no prior best match. */
|
1933 |
ClientData *objectPtr; /* If NULL, the sequences at psPtr
|
1934 |
* correspond to "normal" bindings. If
|
1935 |
* non-NULL, the sequences at psPtr correspond
|
1936 |
* to virtual bindings; in order to match each
|
1937 |
* sequence must correspond to a virtual
|
1938 |
* binding for which a binding exists for
|
1939 |
* object in bindPtr. */
|
1940 |
PatSeq **sourcePtrPtr; /* Filled with the pattern sequence that
|
1941 |
* contains the eventProc and clientData
|
1942 |
* associated with the best match. If this
|
1943 |
* differs from the return value, it is the
|
1944 |
* virtual event that most closely matched the
|
1945 |
* return value (a physical event). Not
|
1946 |
* modified unless a result other than bestPtr
|
1947 |
* is returned. */
|
1948 |
{
|
1949 |
PatSeq *matchPtr, *bestSourcePtr, *sourcePtr;
|
1950 |
|
1951 |
bestSourcePtr = *sourcePtrPtr;
|
1952 |
|
1953 |
/*
|
1954 |
* Iterate over all the pattern sequences.
|
1955 |
*/
|
1956 |
|
1957 |
for ( ; psPtr != NULL; psPtr = psPtr->nextSeqPtr) {
|
1958 |
XEvent *eventPtr;
|
1959 |
Pattern *patPtr;
|
1960 |
Window window;
|
1961 |
Detail *detailPtr;
|
1962 |
int patCount, ringCount, flags, state;
|
1963 |
int modMask;
|
1964 |
|
1965 |
/*
|
1966 |
* Iterate over all the patterns in a sequence to be
|
1967 |
* sure that they all match.
|
1968 |
*/
|
1969 |
|
1970 |
eventPtr = &bindPtr->eventRing[bindPtr->curEvent];
|
1971 |
detailPtr = &bindPtr->detailRing[bindPtr->curEvent];
|
1972 |
window = eventPtr->xany.window;
|
1973 |
patPtr = psPtr->pats;
|
1974 |
patCount = psPtr->numPats;
|
1975 |
ringCount = EVENT_BUFFER_SIZE;
|
1976 |
while (patCount > 0) {
|
1977 |
if (ringCount <= 0) {
|
1978 |
goto nextSequence;
|
1979 |
}
|
1980 |
if (eventPtr->xany.type != patPtr->eventType) {
|
1981 |
/*
|
1982 |
* Most of the event types are considered superfluous
|
1983 |
* in that they are ignored if they occur in the middle
|
1984 |
* of a pattern sequence and have mismatching types. The
|
1985 |
* only ones that cannot be ignored are ButtonPress and
|
1986 |
* ButtonRelease events (if the next event in the pattern
|
1987 |
* is a KeyPress or KeyRelease) and KeyPress and KeyRelease
|
1988 |
* events (if the next pattern event is a ButtonPress or
|
1989 |
* ButtonRelease). Here are some tricky cases to consider:
|
1990 |
* 1. Double-Button or Double-Key events.
|
1991 |
* 2. Double-ButtonRelease or Double-KeyRelease events.
|
1992 |
* 3. The arrival of various events like Enter and Leave
|
1993 |
* and FocusIn and GraphicsExpose between two button
|
1994 |
* presses or key presses.
|
1995 |
* 4. Modifier keys like Shift and Control shouldn't
|
1996 |
* generate conflicts with button events.
|
1997 |
*/
|
1998 |
|
1999 |
if ((patPtr->eventType == KeyPress)
|
2000 |
|| (patPtr->eventType == KeyRelease)) {
|
2001 |
if ((eventPtr->xany.type == ButtonPress)
|
2002 |
|| (eventPtr->xany.type == ButtonRelease)) {
|
2003 |
goto nextSequence;
|
2004 |
}
|
2005 |
} else if ((patPtr->eventType == ButtonPress)
|
2006 |
|| (patPtr->eventType == ButtonRelease)) {
|
2007 |
if ((eventPtr->xany.type == KeyPress)
|
2008 |
|| (eventPtr->xany.type == KeyRelease)) {
|
2009 |
int i;
|
2010 |
|
2011 |
/*
|
2012 |
* Ignore key events if they are modifier keys.
|
2013 |
*/
|
2014 |
|
2015 |
for (i = 0; i < dispPtr->numModKeyCodes; i++) {
|
2016 |
if (dispPtr->modKeyCodes[i]
|
2017 |
== eventPtr->xkey.keycode) {
|
2018 |
/*
|
2019 |
* This key is a modifier key, so ignore it.
|
2020 |
*/
|
2021 |
goto nextEvent;
|
2022 |
}
|
2023 |
}
|
2024 |
goto nextSequence;
|
2025 |
}
|
2026 |
}
|
2027 |
goto nextEvent;
|
2028 |
}
|
2029 |
if (eventPtr->xany.window != window) {
|
2030 |
goto nextSequence;
|
2031 |
}
|
2032 |
|
2033 |
/*
|
2034 |
* Note: it's important for the keysym check to go before
|
2035 |
* the modifier check, so we can ignore unwanted modifier
|
2036 |
* keys before choking on the modifier check.
|
2037 |
*/
|
2038 |
|
2039 |
if ((patPtr->detail.clientData != 0)
|
2040 |
&& (patPtr->detail.clientData != detailPtr->clientData)) {
|
2041 |
/*
|
2042 |
* The detail appears not to match. However, if the event
|
2043 |
* is a KeyPress for a modifier key then just ignore the
|
2044 |
* event. Otherwise event sequences like "aD" never match
|
2045 |
* because the shift key goes down between the "a" and the
|
2046 |
* "D".
|
2047 |
*/
|
2048 |
|
2049 |
if (eventPtr->xany.type == KeyPress) {
|
2050 |
int i;
|
2051 |
|
2052 |
for (i = 0; i < dispPtr->numModKeyCodes; i++) {
|
2053 |
if (dispPtr->modKeyCodes[i] == eventPtr->xkey.keycode) {
|
2054 |
goto nextEvent;
|
2055 |
}
|
2056 |
}
|
2057 |
}
|
2058 |
goto nextSequence;
|
2059 |
}
|
2060 |
flags = flagArray[eventPtr->type];
|
2061 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL)) {
|
2062 |
state = eventPtr->xkey.state;
|
2063 |
} else if (flags & CROSSING) {
|
2064 |
state = eventPtr->xcrossing.state;
|
2065 |
} else {
|
2066 |
state = 0;
|
2067 |
}
|
2068 |
if (patPtr->needMods != 0) {
|
2069 |
modMask = patPtr->needMods;
|
2070 |
if ((modMask & META_MASK) && (dispPtr->metaModMask != 0)) {
|
2071 |
modMask = (modMask & ~META_MASK) | dispPtr->metaModMask;
|
2072 |
}
|
2073 |
if ((modMask & ALT_MASK) && (dispPtr->altModMask != 0)) {
|
2074 |
modMask = (modMask & ~ALT_MASK) | dispPtr->altModMask;
|
2075 |
}
|
2076 |
|
2077 |
if ((state & META_MASK) && (dispPtr->metaModMask != 0)) {
|
2078 |
state = (state & ~META_MASK) | dispPtr->metaModMask;
|
2079 |
}
|
2080 |
if ((state & ALT_MASK) && (dispPtr->altModMask != 0)) {
|
2081 |
state = (state & ~ALT_MASK) | dispPtr->altModMask;
|
2082 |
}
|
2083 |
|
2084 |
if ((state & modMask) != modMask) {
|
2085 |
goto nextSequence;
|
2086 |
}
|
2087 |
}
|
2088 |
if (psPtr->flags & PAT_NEARBY) {
|
2089 |
XEvent *firstPtr;
|
2090 |
int timeDiff;
|
2091 |
|
2092 |
firstPtr = &bindPtr->eventRing[bindPtr->curEvent];
|
2093 |
timeDiff = (Time) firstPtr->xkey.time - eventPtr->xkey.time;
|
2094 |
if ((firstPtr->xkey.x_root
|
2095 |
< (eventPtr->xkey.x_root - NEARBY_PIXELS))
|
2096 |
|| (firstPtr->xkey.x_root
|
2097 |
> (eventPtr->xkey.x_root + NEARBY_PIXELS))
|
2098 |
|| (firstPtr->xkey.y_root
|
2099 |
< (eventPtr->xkey.y_root - NEARBY_PIXELS))
|
2100 |
|| (firstPtr->xkey.y_root
|
2101 |
> (eventPtr->xkey.y_root + NEARBY_PIXELS))
|
2102 |
|| (timeDiff > NEARBY_MS)) {
|
2103 |
goto nextSequence;
|
2104 |
}
|
2105 |
}
|
2106 |
patPtr++;
|
2107 |
patCount--;
|
2108 |
nextEvent:
|
2109 |
if (eventPtr == bindPtr->eventRing) {
|
2110 |
eventPtr = &bindPtr->eventRing[EVENT_BUFFER_SIZE-1];
|
2111 |
detailPtr = &bindPtr->detailRing[EVENT_BUFFER_SIZE-1];
|
2112 |
} else {
|
2113 |
eventPtr--;
|
2114 |
detailPtr--;
|
2115 |
}
|
2116 |
ringCount--;
|
2117 |
}
|
2118 |
|
2119 |
matchPtr = psPtr;
|
2120 |
sourcePtr = psPtr;
|
2121 |
|
2122 |
if (objectPtr != NULL) {
|
2123 |
int iVirt;
|
2124 |
VirtualOwners *voPtr;
|
2125 |
PatternTableKey key;
|
2126 |
|
2127 |
/*
|
2128 |
* The sequence matches the physical constraints.
|
2129 |
* Is this object interested in any of the virtual events
|
2130 |
* that correspond to this sequence?
|
2131 |
*/
|
2132 |
|
2133 |
voPtr = psPtr->voPtr;
|
2134 |
|
2135 |
memset(&key, 0, sizeof(key));
|
2136 |
key.object = *objectPtr;
|
2137 |
key.type = VirtualEvent;
|
2138 |
key.detail.clientData = 0;
|
2139 |
|
2140 |
for (iVirt = 0; iVirt < voPtr->numOwners; iVirt++) {
|
2141 |
Tcl_HashEntry *hPtr = voPtr->owners[iVirt];
|
2142 |
|
2143 |
key.detail.name = (Tk_Uid) Tcl_GetHashKey(hPtr->tablePtr,
|
2144 |
hPtr);
|
2145 |
hPtr = Tcl_FindHashEntry(&bindPtr->patternTable,
|
2146 |
(char *) &key);
|
2147 |
if (hPtr != NULL) {
|
2148 |
|
2149 |
/*
|
2150 |
* This tag is interested in this virtual event and its
|
2151 |
* corresponding physical event is a good match with the
|
2152 |
* virtual event's definition.
|
2153 |
*/
|
2154 |
|
2155 |
PatSeq *virtMatchPtr;
|
2156 |
|
2157 |
virtMatchPtr = (PatSeq *) Tcl_GetHashValue(hPtr);
|
2158 |
if ((virtMatchPtr->numPats != 1)
|
2159 |
|| (virtMatchPtr->nextSeqPtr != NULL)) {
|
2160 |
panic("MatchPattern: badly constructed virtual event");
|
2161 |
}
|
2162 |
sourcePtr = virtMatchPtr;
|
2163 |
goto match;
|
2164 |
}
|
2165 |
}
|
2166 |
|
2167 |
/*
|
2168 |
* The physical event matches a virtual event's definition, but
|
2169 |
* the tag isn't interested in it.
|
2170 |
*/
|
2171 |
goto nextSequence;
|
2172 |
}
|
2173 |
match:
|
2174 |
|
2175 |
/*
|
2176 |
* This sequence matches. If we've already got another match,
|
2177 |
* pick whichever is most specific. Detail is most important,
|
2178 |
* then needMods.
|
2179 |
*/
|
2180 |
|
2181 |
if (bestPtr != NULL) {
|
2182 |
Pattern *patPtr2;
|
2183 |
int i;
|
2184 |
|
2185 |
if (matchPtr->numPats != bestPtr->numPats) {
|
2186 |
if (bestPtr->numPats > matchPtr->numPats) {
|
2187 |
goto nextSequence;
|
2188 |
} else {
|
2189 |
goto newBest;
|
2190 |
}
|
2191 |
}
|
2192 |
for (i = 0, patPtr = matchPtr->pats, patPtr2 = bestPtr->pats;
|
2193 |
i < matchPtr->numPats; i++, patPtr++, patPtr2++) {
|
2194 |
if (patPtr->detail.clientData != patPtr2->detail.clientData) {
|
2195 |
if (patPtr->detail.clientData == 0) {
|
2196 |
goto nextSequence;
|
2197 |
} else {
|
2198 |
goto newBest;
|
2199 |
}
|
2200 |
}
|
2201 |
if (patPtr->needMods != patPtr2->needMods) {
|
2202 |
if ((patPtr->needMods & patPtr2->needMods)
|
2203 |
== patPtr->needMods) {
|
2204 |
goto nextSequence;
|
2205 |
} else if ((patPtr->needMods & patPtr2->needMods)
|
2206 |
== patPtr2->needMods) {
|
2207 |
goto newBest;
|
2208 |
}
|
2209 |
}
|
2210 |
}
|
2211 |
/*
|
2212 |
* Tie goes to current best pattern.
|
2213 |
*
|
2214 |
* (1) For virtual vs. virtual, the least recently defined
|
2215 |
* virtual wins, because virtuals are examined in order of
|
2216 |
* definition. This order is _not_ guaranteed in the
|
2217 |
* documentation.
|
2218 |
*
|
2219 |
* (2) For virtual vs. physical, the physical wins because all
|
2220 |
* the physicals are examined before the virtuals. This order
|
2221 |
* is guaranteed in the documentation.
|
2222 |
*
|
2223 |
* (3) For physical vs. physical pattern, the most recently
|
2224 |
* defined physical wins, because physicals are examined in
|
2225 |
* reverse order of definition. This order is guaranteed in
|
2226 |
* the documentation.
|
2227 |
*/
|
2228 |
|
2229 |
goto nextSequence;
|
2230 |
}
|
2231 |
newBest:
|
2232 |
bestPtr = matchPtr;
|
2233 |
bestSourcePtr = sourcePtr;
|
2234 |
|
2235 |
nextSequence:
|
2236 |
continue;
|
2237 |
}
|
2238 |
|
2239 |
*sourcePtrPtr = bestSourcePtr;
|
2240 |
return bestPtr;
|
2241 |
}
|
2242 |
|
2243 |
/*
|
2244 |
*--------------------------------------------------------------
|
2245 |
*
|
2246 |
* ExpandPercents --
|
2247 |
*
|
2248 |
* Given a command and an event, produce a new command
|
2249 |
* by replacing % constructs in the original command
|
2250 |
* with information from the X event.
|
2251 |
*
|
2252 |
* Results:
|
2253 |
* The new expanded command is appended to the dynamic string
|
2254 |
* given by dsPtr.
|
2255 |
*
|
2256 |
* Side effects:
|
2257 |
* None.
|
2258 |
*
|
2259 |
*--------------------------------------------------------------
|
2260 |
*/
|
2261 |
|
2262 |
static void
|
2263 |
ExpandPercents(winPtr, before, eventPtr, keySym, dsPtr)
|
2264 |
TkWindow *winPtr; /* Window where event occurred: needed to
|
2265 |
* get input context. */
|
2266 |
char *before; /* Command containing percent expressions
|
2267 |
* to be replaced. */
|
2268 |
XEvent *eventPtr; /* X event containing information to be
|
2269 |
* used in % replacements. */
|
2270 |
KeySym keySym; /* KeySym: only relevant for KeyPress and
|
2271 |
* KeyRelease events). */
|
2272 |
Tcl_DString *dsPtr; /* Dynamic string in which to append new
|
2273 |
* command. */
|
2274 |
{
|
2275 |
int spaceNeeded, cvtFlags; /* Used to substitute string as proper Tcl
|
2276 |
* list element. */
|
2277 |
int number, flags, length;
|
2278 |
#define NUM_SIZE 40
|
2279 |
char *string;
|
2280 |
Tcl_DString buf;
|
2281 |
char numStorage[NUM_SIZE+1];
|
2282 |
|
2283 |
Tcl_DStringInit(&buf);
|
2284 |
|
2285 |
if (eventPtr->type < TK_LASTEVENT) {
|
2286 |
flags = flagArray[eventPtr->type];
|
2287 |
} else {
|
2288 |
flags = 0;
|
2289 |
}
|
2290 |
while (1) {
|
2291 |
/*
|
2292 |
* Find everything up to the next % character and append it
|
2293 |
* to the result string.
|
2294 |
*/
|
2295 |
|
2296 |
for (string = before; (*string != 0) && (*string != '%'); string++) {
|
2297 |
/* Empty loop body. */
|
2298 |
}
|
2299 |
if (string != before) {
|
2300 |
Tcl_DStringAppend(dsPtr, before, string-before);
|
2301 |
before = string;
|
2302 |
}
|
2303 |
if (*before == 0) {
|
2304 |
break;
|
2305 |
}
|
2306 |
|
2307 |
/*
|
2308 |
* There's a percent sequence here. Process it.
|
2309 |
*/
|
2310 |
|
2311 |
number = 0;
|
2312 |
string = "??";
|
2313 |
switch (before[1]) {
|
2314 |
case '#':
|
2315 |
number = eventPtr->xany.serial;
|
2316 |
goto doNumber;
|
2317 |
case 'a':
|
2318 |
if (flags & CONFIG) {
|
2319 |
TkpPrintWindowId(numStorage, eventPtr->xconfigure.above);
|
2320 |
string = numStorage;
|
2321 |
}
|
2322 |
goto doString;
|
2323 |
case 'b':
|
2324 |
number = eventPtr->xbutton.button;
|
2325 |
goto doNumber;
|
2326 |
case 'c':
|
2327 |
if (flags & EXPOSE) {
|
2328 |
number = eventPtr->xexpose.count;
|
2329 |
}
|
2330 |
goto doNumber;
|
2331 |
case 'd':
|
2332 |
if (flags & (CROSSING|FOCUS)) {
|
2333 |
if (flags & FOCUS) {
|
2334 |
number = eventPtr->xfocus.detail;
|
2335 |
} else {
|
2336 |
number = eventPtr->xcrossing.detail;
|
2337 |
}
|
2338 |
string = TkFindStateString(notifyDetail, number);
|
2339 |
}
|
2340 |
goto doString;
|
2341 |
case 'f':
|
2342 |
number = eventPtr->xcrossing.focus;
|
2343 |
goto doNumber;
|
2344 |
case 'h':
|
2345 |
if (flags & EXPOSE) {
|
2346 |
number = eventPtr->xexpose.height;
|
2347 |
} else if (flags & (CONFIG)) {
|
2348 |
number = eventPtr->xconfigure.height;
|
2349 |
}
|
2350 |
goto doNumber;
|
2351 |
case 'k':
|
2352 |
number = eventPtr->xkey.keycode;
|
2353 |
goto doNumber;
|
2354 |
case 'm':
|
2355 |
if (flags & CROSSING) {
|
2356 |
number = eventPtr->xcrossing.mode;
|
2357 |
} else if (flags & FOCUS) {
|
2358 |
number = eventPtr->xfocus.mode;
|
2359 |
}
|
2360 |
string = TkFindStateString(notifyMode, number);
|
2361 |
goto doString;
|
2362 |
case 'o':
|
2363 |
if (flags & CREATE) {
|
2364 |
number = eventPtr->xcreatewindow.override_redirect;
|
2365 |
} else if (flags & MAP) {
|
2366 |
number = eventPtr->xmap.override_redirect;
|
2367 |
} else if (flags & REPARENT) {
|
2368 |
number = eventPtr->xreparent.override_redirect;
|
2369 |
} else if (flags & CONFIG) {
|
2370 |
number = eventPtr->xconfigure.override_redirect;
|
2371 |
}
|
2372 |
goto doNumber;
|
2373 |
case 'p':
|
2374 |
string = TkFindStateString(circPlace, eventPtr->xcirculate.place);
|
2375 |
goto doString;
|
2376 |
case 's':
|
2377 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL)) {
|
2378 |
number = eventPtr->xkey.state;
|
2379 |
} else if (flags & CROSSING) {
|
2380 |
number = eventPtr->xcrossing.state;
|
2381 |
} else if (flags & VISIBILITY) {
|
2382 |
string = TkFindStateString(visNotify,
|
2383 |
eventPtr->xvisibility.state);
|
2384 |
goto doString;
|
2385 |
}
|
2386 |
goto doNumber;
|
2387 |
case 't':
|
2388 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL)) {
|
2389 |
number = (int) eventPtr->xkey.time;
|
2390 |
} else if (flags & CROSSING) {
|
2391 |
number = (int) eventPtr->xcrossing.time;
|
2392 |
} else if (flags & PROP) {
|
2393 |
number = (int) eventPtr->xproperty.time;
|
2394 |
}
|
2395 |
goto doNumber;
|
2396 |
case 'v':
|
2397 |
number = eventPtr->xconfigurerequest.value_mask;
|
2398 |
goto doNumber;
|
2399 |
case 'w':
|
2400 |
if (flags & EXPOSE) {
|
2401 |
number = eventPtr->xexpose.width;
|
2402 |
} else if (flags & CONFIG) {
|
2403 |
number = eventPtr->xconfigure.width;
|
2404 |
}
|
2405 |
goto doNumber;
|
2406 |
case 'x':
|
2407 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL)) {
|
2408 |
number = eventPtr->xkey.x;
|
2409 |
} else if (flags & CROSSING) {
|
2410 |
number = eventPtr->xcrossing.x;
|
2411 |
} else if (flags & EXPOSE) {
|
2412 |
number = eventPtr->xexpose.x;
|
2413 |
} else if (flags & (CREATE|CONFIG|GRAVITY)) {
|
2414 |
number = eventPtr->xcreatewindow.x;
|
2415 |
} else if (flags & REPARENT) {
|
2416 |
number = eventPtr->xreparent.x;
|
2417 |
}
|
2418 |
goto doNumber;
|
2419 |
case 'y':
|
2420 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL)) {
|
2421 |
number = eventPtr->xkey.y;
|
2422 |
} else if (flags & EXPOSE) {
|
2423 |
number = eventPtr->xexpose.y;
|
2424 |
} else if (flags & (CREATE|CONFIG|GRAVITY)) {
|
2425 |
number = eventPtr->xcreatewindow.y;
|
2426 |
} else if (flags & REPARENT) {
|
2427 |
number = eventPtr->xreparent.y;
|
2428 |
} else if (flags & CROSSING) {
|
2429 |
number = eventPtr->xcrossing.y;
|
2430 |
|
2431 |
}
|
2432 |
goto doNumber;
|
2433 |
case 'A':
|
2434 |
if (flags & KEY) {
|
2435 |
Tcl_DStringFree(&buf);
|
2436 |
string = TkpGetString(winPtr, eventPtr, &buf);
|
2437 |
}
|
2438 |
goto doString;
|
2439 |
case 'B':
|
2440 |
number = eventPtr->xcreatewindow.border_width;
|
2441 |
goto doNumber;
|
2442 |
case 'D':
|
2443 |
/*
|
2444 |
* This is used only by the MouseWheel event.
|
2445 |
*/
|
2446 |
|
2447 |
number = eventPtr->xkey.keycode;
|
2448 |
goto doNumber;
|
2449 |
case 'E':
|
2450 |
number = (int) eventPtr->xany.send_event;
|
2451 |
goto doNumber;
|
2452 |
case 'K':
|
2453 |
if (flags & KEY) {
|
2454 |
char *name;
|
2455 |
|
2456 |
name = TkKeysymToString(keySym);
|
2457 |
if (name != NULL) {
|
2458 |
string = name;
|
2459 |
}
|
2460 |
}
|
2461 |
goto doString;
|
2462 |
case 'N':
|
2463 |
number = (int) keySym;
|
2464 |
goto doNumber;
|
2465 |
case 'R':
|
2466 |
TkpPrintWindowId(numStorage, eventPtr->xkey.root);
|
2467 |
string = numStorage;
|
2468 |
goto doString;
|
2469 |
case 'S':
|
2470 |
TkpPrintWindowId(numStorage, eventPtr->xkey.subwindow);
|
2471 |
string = numStorage;
|
2472 |
goto doString;
|
2473 |
case 'T':
|
2474 |
number = eventPtr->type;
|
2475 |
goto doNumber;
|
2476 |
case 'W': {
|
2477 |
Tk_Window tkwin;
|
2478 |
|
2479 |
tkwin = Tk_IdToWindow(eventPtr->xany.display,
|
2480 |
eventPtr->xany.window);
|
2481 |
if (tkwin != NULL) {
|
2482 |
string = Tk_PathName(tkwin);
|
2483 |
} else {
|
2484 |
string = "??";
|
2485 |
}
|
2486 |
goto doString;
|
2487 |
}
|
2488 |
case 'X': {
|
2489 |
Tk_Window tkwin;
|
2490 |
int x, y;
|
2491 |
int width, height;
|
2492 |
|
2493 |
number = eventPtr->xkey.x_root;
|
2494 |
tkwin = Tk_IdToWindow(eventPtr->xany.display,
|
2495 |
eventPtr->xany.window);
|
2496 |
if (tkwin != NULL) {
|
2497 |
Tk_GetVRootGeometry(tkwin, &x, &y, &width, &height);
|
2498 |
number -= x;
|
2499 |
}
|
2500 |
goto doNumber;
|
2501 |
}
|
2502 |
case 'Y': {
|
2503 |
Tk_Window tkwin;
|
2504 |
int x, y;
|
2505 |
int width, height;
|
2506 |
|
2507 |
number = eventPtr->xkey.y_root;
|
2508 |
tkwin = Tk_IdToWindow(eventPtr->xany.display,
|
2509 |
eventPtr->xany.window);
|
2510 |
if (tkwin != NULL) {
|
2511 |
Tk_GetVRootGeometry(tkwin, &x, &y, &width, &height);
|
2512 |
number -= y;
|
2513 |
}
|
2514 |
goto doNumber;
|
2515 |
}
|
2516 |
default:
|
2517 |
numStorage[0] = before[1];
|
2518 |
numStorage[1] = '\0';
|
2519 |
string = numStorage;
|
2520 |
goto doString;
|
2521 |
}
|
2522 |
|
2523 |
doNumber:
|
2524 |
sprintf(numStorage, "%d", number);
|
2525 |
string = numStorage;
|
2526 |
|
2527 |
doString:
|
2528 |
spaceNeeded = Tcl_ScanElement(string, &cvtFlags);
|
2529 |
length = Tcl_DStringLength(dsPtr);
|
2530 |
Tcl_DStringSetLength(dsPtr, length + spaceNeeded);
|
2531 |
spaceNeeded = Tcl_ConvertElement(string,
|
2532 |
Tcl_DStringValue(dsPtr) + length,
|
2533 |
cvtFlags | TCL_DONT_USE_BRACES);
|
2534 |
Tcl_DStringSetLength(dsPtr, length + spaceNeeded);
|
2535 |
before += 2;
|
2536 |
}
|
2537 |
Tcl_DStringFree(&buf);
|
2538 |
}
|
2539 |
|
2540 |
/*
|
2541 |
*----------------------------------------------------------------------
|
2542 |
*
|
2543 |
* ChangeScreen --
|
2544 |
*
|
2545 |
* This procedure is invoked whenever the current screen changes
|
2546 |
* in an application. It invokes a Tcl procedure named
|
2547 |
* "tkScreenChanged", passing it the screen name as argument.
|
2548 |
* tkScreenChanged does things like making the tkPriv variable
|
2549 |
* point to an array for the current display.
|
2550 |
*
|
2551 |
* Results:
|
2552 |
* None.
|
2553 |
*
|
2554 |
* Side effects:
|
2555 |
* Depends on what tkScreenChanged does. If an error occurs
|
2556 |
* them tkError will be invoked.
|
2557 |
*
|
2558 |
*----------------------------------------------------------------------
|
2559 |
*/
|
2560 |
|
2561 |
static void
|
2562 |
ChangeScreen(interp, dispName, screenIndex)
|
2563 |
Tcl_Interp *interp; /* Interpreter in which to invoke
|
2564 |
* command. */
|
2565 |
char *dispName; /* Name of new display. */
|
2566 |
int screenIndex; /* Index of new screen. */
|
2567 |
{
|
2568 |
Tcl_DString cmd;
|
2569 |
int code;
|
2570 |
char screen[TCL_INTEGER_SPACE];
|
2571 |
|
2572 |
Tcl_DStringInit(&cmd);
|
2573 |
Tcl_DStringAppend(&cmd, "tkScreenChanged ", 16);
|
2574 |
Tcl_DStringAppend(&cmd, dispName, -1);
|
2575 |
sprintf(screen, ".%d", screenIndex);
|
2576 |
Tcl_DStringAppend(&cmd, screen, -1);
|
2577 |
code = Tcl_GlobalEval(interp, Tcl_DStringValue(&cmd));
|
2578 |
if (code != TCL_OK) {
|
2579 |
Tcl_AddErrorInfo(interp,
|
2580 |
"\n (changing screen in event binding)");
|
2581 |
Tcl_BackgroundError(interp);
|
2582 |
}
|
2583 |
}
|
2584 |
|
2585 |
|
2586 |
/*
|
2587 |
*----------------------------------------------------------------------
|
2588 |
*
|
2589 |
* Tk_EventCmd --
|
2590 |
*
|
2591 |
* This procedure is invoked to process the "event" Tcl command.
|
2592 |
* It is used to define and generate events.
|
2593 |
*
|
2594 |
* Results:
|
2595 |
* A standard Tcl result.
|
2596 |
*
|
2597 |
* Side effects:
|
2598 |
* See the user documentation.
|
2599 |
*
|
2600 |
*----------------------------------------------------------------------
|
2601 |
*/
|
2602 |
|
2603 |
int
|
2604 |
Tk_EventObjCmd(clientData, interp, objc, objv)
|
2605 |
ClientData clientData; /* Main window associated with interpreter. */
|
2606 |
Tcl_Interp *interp; /* Current interpreter. */
|
2607 |
int objc; /* Number of arguments. */
|
2608 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
2609 |
{
|
2610 |
int index;
|
2611 |
Tk_Window tkwin;
|
2612 |
VirtualEventTable *vetPtr;
|
2613 |
TkBindInfo bindInfo;
|
2614 |
static char *optionStrings[] = {
|
2615 |
"add", "delete", "generate", "info",
|
2616 |
NULL
|
2617 |
};
|
2618 |
enum options {
|
2619 |
EVENT_ADD, EVENT_DELETE, EVENT_GENERATE, EVENT_INFO
|
2620 |
};
|
2621 |
|
2622 |
tkwin = (Tk_Window) clientData;
|
2623 |
bindInfo = ((TkWindow *) tkwin)->mainPtr->bindInfo;
|
2624 |
vetPtr = &((BindInfo *) bindInfo)->virtualEventTable;
|
2625 |
|
2626 |
if (objc < 2) {
|
2627 |
Tcl_WrongNumArgs(interp, 1, objv, "option ?arg?");
|
2628 |
return TCL_ERROR;
|
2629 |
}
|
2630 |
if (Tcl_GetIndexFromObj(interp, objv[1], optionStrings, "option", 0,
|
2631 |
&index) != TCL_OK) {
|
2632 |
return TCL_ERROR;
|
2633 |
}
|
2634 |
|
2635 |
switch ((enum options) index) {
|
2636 |
case EVENT_ADD: {
|
2637 |
int i;
|
2638 |
char *name, *event;
|
2639 |
|
2640 |
if (objc < 4) {
|
2641 |
Tcl_WrongNumArgs(interp, 2, objv,
|
2642 |
"virtual sequence ?sequence ...?");
|
2643 |
return TCL_ERROR;
|
2644 |
}
|
2645 |
name = Tcl_GetStringFromObj(objv[2], NULL);
|
2646 |
for (i = 3; i < objc; i++) {
|
2647 |
event = Tcl_GetStringFromObj(objv[i], NULL);
|
2648 |
if (CreateVirtualEvent(interp, vetPtr, name, event) != TCL_OK) {
|
2649 |
return TCL_ERROR;
|
2650 |
}
|
2651 |
}
|
2652 |
break;
|
2653 |
}
|
2654 |
case EVENT_DELETE: {
|
2655 |
int i;
|
2656 |
char *name, *event;
|
2657 |
|
2658 |
if (objc < 3) {
|
2659 |
Tcl_WrongNumArgs(interp, 2, objv,
|
2660 |
"virtual ?sequence sequence ...?");
|
2661 |
return TCL_ERROR;
|
2662 |
}
|
2663 |
name = Tcl_GetStringFromObj(objv[2], NULL);
|
2664 |
if (objc == 3) {
|
2665 |
return DeleteVirtualEvent(interp, vetPtr, name, NULL);
|
2666 |
}
|
2667 |
for (i = 3; i < objc; i++) {
|
2668 |
event = Tcl_GetStringFromObj(objv[i], NULL);
|
2669 |
if (DeleteVirtualEvent(interp, vetPtr, name, event) != TCL_OK) {
|
2670 |
return TCL_ERROR;
|
2671 |
}
|
2672 |
}
|
2673 |
break;
|
2674 |
}
|
2675 |
case EVENT_GENERATE: {
|
2676 |
if (objc < 4) {
|
2677 |
Tcl_WrongNumArgs(interp, 2, objv, "window event ?options?");
|
2678 |
return TCL_ERROR;
|
2679 |
}
|
2680 |
return HandleEventGenerate(interp, tkwin, objc - 2, objv + 2);
|
2681 |
}
|
2682 |
case EVENT_INFO: {
|
2683 |
if (objc == 2) {
|
2684 |
GetAllVirtualEvents(interp, vetPtr);
|
2685 |
return TCL_OK;
|
2686 |
} else if (objc == 3) {
|
2687 |
return GetVirtualEvent(interp, vetPtr,
|
2688 |
Tcl_GetStringFromObj(objv[2], NULL));
|
2689 |
} else {
|
2690 |
Tcl_WrongNumArgs(interp, 2, objv, "?virtual?");
|
2691 |
return TCL_ERROR;
|
2692 |
}
|
2693 |
}
|
2694 |
}
|
2695 |
return TCL_OK;
|
2696 |
}
|
2697 |
|
2698 |
/*
|
2699 |
*---------------------------------------------------------------------------
|
2700 |
*
|
2701 |
* InitVirtualEventTable --
|
2702 |
*
|
2703 |
* Given storage for a virtual event table, set up the fields to
|
2704 |
* prepare a new domain in which virtual events may be defined.
|
2705 |
*
|
2706 |
* Results:
|
2707 |
* None.
|
2708 |
*
|
2709 |
* Side effects:
|
2710 |
* *vetPtr is now initialized.
|
2711 |
*
|
2712 |
*---------------------------------------------------------------------------
|
2713 |
*/
|
2714 |
|
2715 |
static void
|
2716 |
InitVirtualEventTable(vetPtr)
|
2717 |
VirtualEventTable *vetPtr; /* Pointer to virtual event table. Memory
|
2718 |
* is supplied by the caller. */
|
2719 |
{
|
2720 |
Tcl_InitHashTable(&vetPtr->patternTable,
|
2721 |
sizeof(PatternTableKey) / sizeof(int));
|
2722 |
Tcl_InitHashTable(&vetPtr->nameTable, TCL_ONE_WORD_KEYS);
|
2723 |
}
|
2724 |
|
2725 |
/*
|
2726 |
*---------------------------------------------------------------------------
|
2727 |
*
|
2728 |
* DeleteVirtualEventTable --
|
2729 |
*
|
2730 |
* Delete the contents of a virtual event table. The caller is
|
2731 |
* responsible for freeing any memory used by the table itself.
|
2732 |
*
|
2733 |
* Results:
|
2734 |
* None.
|
2735 |
*
|
2736 |
* Side effects:
|
2737 |
* Memory is freed.
|
2738 |
*
|
2739 |
*---------------------------------------------------------------------------
|
2740 |
*/
|
2741 |
|
2742 |
static void
|
2743 |
DeleteVirtualEventTable(vetPtr)
|
2744 |
VirtualEventTable *vetPtr; /* The virtual event table to delete. */
|
2745 |
{
|
2746 |
Tcl_HashEntry *hPtr;
|
2747 |
Tcl_HashSearch search;
|
2748 |
PatSeq *psPtr, *nextPtr;
|
2749 |
|
2750 |
hPtr = Tcl_FirstHashEntry(&vetPtr->patternTable, &search);
|
2751 |
for ( ; hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
|
2752 |
psPtr = (PatSeq *) Tcl_GetHashValue(hPtr);
|
2753 |
for ( ; psPtr != NULL; psPtr = nextPtr) {
|
2754 |
nextPtr = psPtr->nextSeqPtr;
|
2755 |
ckfree((char *) psPtr->voPtr);
|
2756 |
ckfree((char *) psPtr);
|
2757 |
}
|
2758 |
}
|
2759 |
Tcl_DeleteHashTable(&vetPtr->patternTable);
|
2760 |
|
2761 |
hPtr = Tcl_FirstHashEntry(&vetPtr->nameTable, &search);
|
2762 |
for ( ; hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
|
2763 |
ckfree((char *) Tcl_GetHashValue(hPtr));
|
2764 |
}
|
2765 |
Tcl_DeleteHashTable(&vetPtr->nameTable);
|
2766 |
}
|
2767 |
|
2768 |
/*
|
2769 |
*----------------------------------------------------------------------
|
2770 |
*
|
2771 |
* CreateVirtualEvent --
|
2772 |
*
|
2773 |
* Add a new definition for a virtual event. If the virtual event
|
2774 |
* is already defined, the new definition augments those that
|
2775 |
* already exist.
|
2776 |
*
|
2777 |
* Results:
|
2778 |
* The return value is TCL_ERROR if an error occured while
|
2779 |
* creating the virtual binding. In this case, an error message
|
2780 |
* will be left in the interp's result. If all went well then the
|
2781 |
* return value is TCL_OK.
|
2782 |
*
|
2783 |
* Side effects:
|
2784 |
* The virtual event may cause future calls to Tk_BindEvent to
|
2785 |
* behave differently than they did previously.
|
2786 |
*
|
2787 |
*----------------------------------------------------------------------
|
2788 |
*/
|
2789 |
|
2790 |
static int
|
2791 |
CreateVirtualEvent(interp, vetPtr, virtString, eventString)
|
2792 |
Tcl_Interp *interp; /* Used for error reporting. */
|
2793 |
VirtualEventTable *vetPtr;/* Table in which to augment virtual event. */
|
2794 |
char *virtString; /* Name of new virtual event. */
|
2795 |
char *eventString; /* String describing physical event that
|
2796 |
* triggers virtual event. */
|
2797 |
{
|
2798 |
PatSeq *psPtr;
|
2799 |
int dummy;
|
2800 |
Tcl_HashEntry *vhPtr;
|
2801 |
unsigned long eventMask;
|
2802 |
PhysicalsOwned *poPtr;
|
2803 |
VirtualOwners *voPtr;
|
2804 |
Tk_Uid virtUid;
|
2805 |
|
2806 |
virtUid = GetVirtualEventUid(interp, virtString);
|
2807 |
if (virtUid == NULL) {
|
2808 |
return TCL_ERROR;
|
2809 |
}
|
2810 |
|
2811 |
/*
|
2812 |
* Find/create physical event
|
2813 |
*/
|
2814 |
|
2815 |
psPtr = FindSequence(interp, &vetPtr->patternTable, NULL, eventString,
|
2816 |
1, 0, &eventMask);
|
2817 |
if (psPtr == NULL) {
|
2818 |
return TCL_ERROR;
|
2819 |
}
|
2820 |
|
2821 |
/*
|
2822 |
* Find/create virtual event.
|
2823 |
*/
|
2824 |
|
2825 |
vhPtr = Tcl_CreateHashEntry(&vetPtr->nameTable, virtUid, &dummy);
|
2826 |
|
2827 |
/*
|
2828 |
* Make virtual event own the physical event.
|
2829 |
*/
|
2830 |
|
2831 |
poPtr = (PhysicalsOwned *) Tcl_GetHashValue(vhPtr);
|
2832 |
if (poPtr == NULL) {
|
2833 |
poPtr = (PhysicalsOwned *) ckalloc(sizeof(PhysicalsOwned));
|
2834 |
poPtr->numOwned = 0;
|
2835 |
} else {
|
2836 |
/*
|
2837 |
* See if this virtual event is already defined for this physical
|
2838 |
* event and just return if it is.
|
2839 |
*/
|
2840 |
|
2841 |
int i;
|
2842 |
for (i = 0; i < poPtr->numOwned; i++) {
|
2843 |
if (poPtr->patSeqs[i] == psPtr) {
|
2844 |
return TCL_OK;
|
2845 |
}
|
2846 |
}
|
2847 |
poPtr = (PhysicalsOwned *) ckrealloc((char *) poPtr,
|
2848 |
sizeof(PhysicalsOwned) + poPtr->numOwned * sizeof(PatSeq *));
|
2849 |
}
|
2850 |
Tcl_SetHashValue(vhPtr, (ClientData) poPtr);
|
2851 |
poPtr->patSeqs[poPtr->numOwned] = psPtr;
|
2852 |
poPtr->numOwned++;
|
2853 |
|
2854 |
/*
|
2855 |
* Make physical event so it can trigger the virtual event.
|
2856 |
*/
|
2857 |
|
2858 |
voPtr = psPtr->voPtr;
|
2859 |
if (voPtr == NULL) {
|
2860 |
voPtr = (VirtualOwners *) ckalloc(sizeof(VirtualOwners));
|
2861 |
voPtr->numOwners = 0;
|
2862 |
} else {
|
2863 |
voPtr = (VirtualOwners *) ckrealloc((char *) voPtr,
|
2864 |
sizeof(VirtualOwners)
|
2865 |
+ voPtr->numOwners * sizeof(Tcl_HashEntry *));
|
2866 |
}
|
2867 |
psPtr->voPtr = voPtr;
|
2868 |
voPtr->owners[voPtr->numOwners] = vhPtr;
|
2869 |
voPtr->numOwners++;
|
2870 |
|
2871 |
return TCL_OK;
|
2872 |
}
|
2873 |
|
2874 |
/*
|
2875 |
*--------------------------------------------------------------
|
2876 |
*
|
2877 |
* DeleteVirtualEvent --
|
2878 |
*
|
2879 |
* Remove the definition of a given virtual event. If the
|
2880 |
* event string is NULL, all definitions of the virtual event
|
2881 |
* will be removed. Otherwise, just the specified definition
|
2882 |
* of the virtual event will be removed.
|
2883 |
*
|
2884 |
* Results:
|
2885 |
* The result is a standard Tcl return value. If an error
|
2886 |
* occurs then the interp's result will contain an error message.
|
2887 |
* It is not an error to attempt to delete a virtual event that
|
2888 |
* does not exist or a definition that does not exist.
|
2889 |
*
|
2890 |
* Side effects:
|
2891 |
* The virtual event given by virtString may be removed from the
|
2892 |
* virtual event table.
|
2893 |
*
|
2894 |
*--------------------------------------------------------------
|
2895 |
*/
|
2896 |
|
2897 |
static int
|
2898 |
DeleteVirtualEvent(interp, vetPtr, virtString, eventString)
|
2899 |
Tcl_Interp *interp; /* Used for error reporting. */
|
2900 |
VirtualEventTable *vetPtr;/* Table in which to delete event. */
|
2901 |
char *virtString; /* String describing event sequence that
|
2902 |
* triggers binding. */
|
2903 |
char *eventString; /* The event sequence that should be deleted,
|
2904 |
* or NULL to delete all event sequences for
|
2905 |
* the entire virtual event. */
|
2906 |
{
|
2907 |
int iPhys;
|
2908 |
Tk_Uid virtUid;
|
2909 |
Tcl_HashEntry *vhPtr;
|
2910 |
PhysicalsOwned *poPtr;
|
2911 |
PatSeq *eventPSPtr;
|
2912 |
|
2913 |
virtUid = GetVirtualEventUid(interp, virtString);
|
2914 |
if (virtUid == NULL) {
|
2915 |
return TCL_ERROR;
|
2916 |
}
|
2917 |
|
2918 |
vhPtr = Tcl_FindHashEntry(&vetPtr->nameTable, virtUid);
|
2919 |
if (vhPtr == NULL) {
|
2920 |
return TCL_OK;
|
2921 |
}
|
2922 |
poPtr = (PhysicalsOwned *) Tcl_GetHashValue(vhPtr);
|
2923 |
|
2924 |
eventPSPtr = NULL;
|
2925 |
if (eventString != NULL) {
|
2926 |
unsigned long eventMask;
|
2927 |
|
2928 |
/*
|
2929 |
* Delete only the specific physical event associated with the
|
2930 |
* virtual event. If the physical event doesn't already exist, or
|
2931 |
* the virtual event doesn't own that physical event, return w/o
|
2932 |
* doing anything.
|
2933 |
*/
|
2934 |
|
2935 |
eventPSPtr = FindSequence(interp, &vetPtr->patternTable, NULL,
|
2936 |
eventString, 0, 0, &eventMask);
|
2937 |
if (eventPSPtr == NULL) {
|
2938 |
char *string;
|
2939 |
|
2940 |
string = Tcl_GetStringResult(interp);
|
2941 |
return (string[0] != '\0') ? TCL_ERROR : TCL_OK;
|
2942 |
}
|
2943 |
}
|
2944 |
|
2945 |
for (iPhys = poPtr->numOwned; --iPhys >= 0; ) {
|
2946 |
PatSeq *psPtr = poPtr->patSeqs[iPhys];
|
2947 |
if ((eventPSPtr == NULL) || (psPtr == eventPSPtr)) {
|
2948 |
int iVirt;
|
2949 |
VirtualOwners *voPtr;
|
2950 |
|
2951 |
/*
|
2952 |
* Remove association between this physical event and the given
|
2953 |
* virtual event that it triggers.
|
2954 |
*/
|
2955 |
|
2956 |
voPtr = psPtr->voPtr;
|
2957 |
for (iVirt = 0; iVirt < voPtr->numOwners; iVirt++) {
|
2958 |
if (voPtr->owners[iVirt] == vhPtr) {
|
2959 |
break;
|
2960 |
}
|
2961 |
}
|
2962 |
if (iVirt == voPtr->numOwners) {
|
2963 |
panic("DeleteVirtualEvent: couldn't find owner");
|
2964 |
}
|
2965 |
voPtr->numOwners--;
|
2966 |
if (voPtr->numOwners == 0) {
|
2967 |
/*
|
2968 |
* Removed last reference to this physical event, so
|
2969 |
* remove it from physical->virtual map.
|
2970 |
*/
|
2971 |
PatSeq *prevPtr = (PatSeq *) Tcl_GetHashValue(psPtr->hPtr);
|
2972 |
if (prevPtr == psPtr) {
|
2973 |
if (psPtr->nextSeqPtr == NULL) {
|
2974 |
Tcl_DeleteHashEntry(psPtr->hPtr);
|
2975 |
} else {
|
2976 |
Tcl_SetHashValue(psPtr->hPtr,
|
2977 |
psPtr->nextSeqPtr);
|
2978 |
}
|
2979 |
} else {
|
2980 |
for ( ; ; prevPtr = prevPtr->nextSeqPtr) {
|
2981 |
if (prevPtr == NULL) {
|
2982 |
panic("DeleteVirtualEvent couldn't find on hash chain");
|
2983 |
}
|
2984 |
if (prevPtr->nextSeqPtr == psPtr) {
|
2985 |
prevPtr->nextSeqPtr = psPtr->nextSeqPtr;
|
2986 |
break;
|
2987 |
}
|
2988 |
}
|
2989 |
}
|
2990 |
ckfree((char *) psPtr->voPtr);
|
2991 |
ckfree((char *) psPtr);
|
2992 |
} else {
|
2993 |
/*
|
2994 |
* This physical event still triggers some other virtual
|
2995 |
* event(s). Consolidate the list of virtual owners for
|
2996 |
* this physical event so it no longer triggers the
|
2997 |
* given virtual event.
|
2998 |
*/
|
2999 |
voPtr->owners[iVirt] = voPtr->owners[voPtr->numOwners];
|
3000 |
}
|
3001 |
|
3002 |
/*
|
3003 |
* Now delete the virtual event's reference to the physical
|
3004 |
* event.
|
3005 |
*/
|
3006 |
|
3007 |
poPtr->numOwned--;
|
3008 |
if (eventPSPtr != NULL && poPtr->numOwned != 0) {
|
3009 |
/*
|
3010 |
* Just deleting this one physical event. Consolidate list
|
3011 |
* of owned physical events and return.
|
3012 |
*/
|
3013 |
|
3014 |
poPtr->patSeqs[iPhys] = poPtr->patSeqs[poPtr->numOwned];
|
3015 |
return TCL_OK;
|
3016 |
}
|
3017 |
}
|
3018 |
}
|
3019 |
|
3020 |
if (poPtr->numOwned == 0) {
|
3021 |
/*
|
3022 |
* All the physical events for this virtual event were deleted,
|
3023 |
* either because there was only one associated physical event or
|
3024 |
* because the caller was deleting the entire virtual event. Now
|
3025 |
* the virtual event itself should be deleted.
|
3026 |
*/
|
3027 |
|
3028 |
ckfree((char *) poPtr);
|
3029 |
Tcl_DeleteHashEntry(vhPtr);
|
3030 |
}
|
3031 |
return TCL_OK;
|
3032 |
}
|
3033 |
|
3034 |
/*
|
3035 |
*---------------------------------------------------------------------------
|
3036 |
*
|
3037 |
* GetVirtualEvent --
|
3038 |
*
|
3039 |
* Return the list of physical events that can invoke the
|
3040 |
* given virtual event.
|
3041 |
*
|
3042 |
* Results:
|
3043 |
* The return value is TCL_OK and the interp's result is filled with the
|
3044 |
* string representation of the physical events associated with the
|
3045 |
* virtual event; if there are no physical events for the given virtual
|
3046 |
* event, the interp's result is filled with and empty string. If the
|
3047 |
* virtual event string is improperly formed, then TCL_ERROR is
|
3048 |
* returned and an error message is left in the interp's result.
|
3049 |
*
|
3050 |
* Side effects:
|
3051 |
* None.
|
3052 |
*
|
3053 |
*---------------------------------------------------------------------------
|
3054 |
*/
|
3055 |
|
3056 |
static int
|
3057 |
GetVirtualEvent(interp, vetPtr, virtString)
|
3058 |
Tcl_Interp *interp; /* Interpreter for reporting. */
|
3059 |
VirtualEventTable *vetPtr;/* Table in which to look for event. */
|
3060 |
char *virtString; /* String describing virtual event. */
|
3061 |
{
|
3062 |
Tcl_HashEntry *vhPtr;
|
3063 |
Tcl_DString ds;
|
3064 |
int iPhys;
|
3065 |
PhysicalsOwned *poPtr;
|
3066 |
Tk_Uid virtUid;
|
3067 |
|
3068 |
virtUid = GetVirtualEventUid(interp, virtString);
|
3069 |
if (virtUid == NULL) {
|
3070 |
return TCL_ERROR;
|
3071 |
}
|
3072 |
|
3073 |
vhPtr = Tcl_FindHashEntry(&vetPtr->nameTable, virtUid);
|
3074 |
if (vhPtr == NULL) {
|
3075 |
return TCL_OK;
|
3076 |
}
|
3077 |
|
3078 |
Tcl_DStringInit(&ds);
|
3079 |
|
3080 |
poPtr = (PhysicalsOwned *) Tcl_GetHashValue(vhPtr);
|
3081 |
for (iPhys = 0; iPhys < poPtr->numOwned; iPhys++) {
|
3082 |
Tcl_DStringSetLength(&ds, 0);
|
3083 |
GetPatternString(poPtr->patSeqs[iPhys], &ds);
|
3084 |
Tcl_AppendElement(interp, Tcl_DStringValue(&ds));
|
3085 |
}
|
3086 |
Tcl_DStringFree(&ds);
|
3087 |
|
3088 |
return TCL_OK;
|
3089 |
}
|
3090 |
|
3091 |
/*
|
3092 |
*--------------------------------------------------------------
|
3093 |
*
|
3094 |
* GetAllVirtualEvents --
|
3095 |
*
|
3096 |
* Return a list that contains the names of all the virtual
|
3097 |
* event defined.
|
3098 |
*
|
3099 |
* Results:
|
3100 |
* There is no return value. The interp's result is modified to
|
3101 |
* hold a Tcl list with one entry for each virtual event in
|
3102 |
* nameTable.
|
3103 |
*
|
3104 |
* Side effects:
|
3105 |
* None.
|
3106 |
*
|
3107 |
*--------------------------------------------------------------
|
3108 |
*/
|
3109 |
|
3110 |
static void
|
3111 |
GetAllVirtualEvents(interp, vetPtr)
|
3112 |
Tcl_Interp *interp; /* Interpreter returning result. */
|
3113 |
VirtualEventTable *vetPtr;/* Table containing events. */
|
3114 |
{
|
3115 |
Tcl_HashEntry *hPtr;
|
3116 |
Tcl_HashSearch search;
|
3117 |
Tcl_DString ds;
|
3118 |
|
3119 |
Tcl_DStringInit(&ds);
|
3120 |
|
3121 |
hPtr = Tcl_FirstHashEntry(&vetPtr->nameTable, &search);
|
3122 |
for ( ; hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
|
3123 |
Tcl_DStringSetLength(&ds, 0);
|
3124 |
Tcl_DStringAppend(&ds, "<<", 2);
|
3125 |
Tcl_DStringAppend(&ds, Tcl_GetHashKey(hPtr->tablePtr, hPtr), -1);
|
3126 |
Tcl_DStringAppend(&ds, ">>", 2);
|
3127 |
Tcl_AppendElement(interp, Tcl_DStringValue(&ds));
|
3128 |
}
|
3129 |
|
3130 |
Tcl_DStringFree(&ds);
|
3131 |
}
|
3132 |
|
3133 |
/*
|
3134 |
*---------------------------------------------------------------------------
|
3135 |
*
|
3136 |
* HandleEventGenerate --
|
3137 |
*
|
3138 |
* Helper function for the "event generate" command. Generate and
|
3139 |
* process an XEvent, constructed from information parsed from the
|
3140 |
* event description string and its optional arguments.
|
3141 |
*
|
3142 |
* argv[0] contains name of the target window.
|
3143 |
* argv[1] contains pattern string for one event (e.g, <Control-v>).
|
3144 |
* argv[2..argc-1] contains -field/option pairs for specifying
|
3145 |
* additional detail in the generated event.
|
3146 |
*
|
3147 |
* Either virtual or physical events can be generated this way.
|
3148 |
* The event description string must contain the specification
|
3149 |
* for only one event.
|
3150 |
*
|
3151 |
* Results:
|
3152 |
* None.
|
3153 |
*
|
3154 |
* Side effects:
|
3155 |
* When constructing the event,
|
3156 |
* event.xany.serial is filled with the current X serial number.
|
3157 |
* event.xany.window is filled with the target window.
|
3158 |
* event.xany.display is filled with the target window's display.
|
3159 |
* Any other fields in eventPtr which are not specified by the pattern
|
3160 |
* string or the optional arguments, are set to 0.
|
3161 |
*
|
3162 |
* The event may be handled sychronously or asynchronously, depending
|
3163 |
* on the value specified by the optional "-when" option. The
|
3164 |
* default setting is synchronous.
|
3165 |
*
|
3166 |
*---------------------------------------------------------------------------
|
3167 |
*/
|
3168 |
static int
|
3169 |
HandleEventGenerate(interp, mainWin, objc, objv)
|
3170 |
Tcl_Interp *interp; /* Interp for errors return and name lookup. */
|
3171 |
Tk_Window mainWin; /* Main window associated with interp. */
|
3172 |
int objc; /* Number of arguments. */
|
3173 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
3174 |
{
|
3175 |
XEvent event;
|
3176 |
char *name, *p, *windowName;
|
3177 |
int count, flags, synch, i, number, warp;
|
3178 |
Tcl_QueuePosition pos;
|
3179 |
Pattern pat;
|
3180 |
Tk_Window tkwin, tkwin2;
|
3181 |
TkWindow *mainPtr;
|
3182 |
unsigned long eventMask;
|
3183 |
static char *fieldStrings[] = {
|
3184 |
"-when", "-above", "-borderwidth", "-button",
|
3185 |
"-count", "-delta", "-detail", "-focus",
|
3186 |
"-height",
|
3187 |
"-keycode", "-keysym", "-mode", "-override",
|
3188 |
"-place", "-root", "-rootx", "-rooty",
|
3189 |
"-sendevent", "-serial", "-state", "-subwindow",
|
3190 |
"-time", "-warp", "-width", "-window",
|
3191 |
"-x", "-y", NULL
|
3192 |
};
|
3193 |
enum field {
|
3194 |
EVENT_WHEN, EVENT_ABOVE, EVENT_BORDER, EVENT_BUTTON,
|
3195 |
EVENT_COUNT, EVENT_DELTA, EVENT_DETAIL, EVENT_FOCUS,
|
3196 |
EVENT_HEIGHT,
|
3197 |
EVENT_KEYCODE, EVENT_KEYSYM, EVENT_MODE, EVENT_OVERRIDE,
|
3198 |
EVENT_PLACE, EVENT_ROOT, EVENT_ROOTX, EVENT_ROOTY,
|
3199 |
EVENT_SEND, EVENT_SERIAL, EVENT_STATE, EVENT_SUBWINDOW,
|
3200 |
EVENT_TIME, EVENT_WARP, EVENT_WIDTH, EVENT_WINDOW,
|
3201 |
EVENT_X, EVENT_Y
|
3202 |
};
|
3203 |
|
3204 |
windowName = Tcl_GetStringFromObj(objv[0], NULL);
|
3205 |
if (!windowName[0]) {
|
3206 |
tkwin = mainWin;
|
3207 |
} else if (NameToWindow(interp, mainWin, objv[0], &tkwin) != TCL_OK) {
|
3208 |
return TCL_ERROR;
|
3209 |
}
|
3210 |
|
3211 |
mainPtr = (TkWindow *) mainWin;
|
3212 |
if ((tkwin == NULL)
|
3213 |
|| (mainPtr->mainPtr != ((TkWindow *) tkwin)->mainPtr)) {
|
3214 |
char *name;
|
3215 |
|
3216 |
name = Tcl_GetStringFromObj(objv[0], NULL);
|
3217 |
Tcl_AppendResult(interp, "window id \"", name,
|
3218 |
"\" doesn't exist in this application", (char *) NULL);
|
3219 |
return TCL_ERROR;
|
3220 |
}
|
3221 |
|
3222 |
name = Tcl_GetStringFromObj(objv[1], NULL);
|
3223 |
|
3224 |
p = name;
|
3225 |
eventMask = 0;
|
3226 |
count = ParseEventDescription(interp, &p, &pat, &eventMask);
|
3227 |
if (count == 0) {
|
3228 |
return TCL_ERROR;
|
3229 |
}
|
3230 |
if (count != 1) {
|
3231 |
Tcl_SetResult(interp, "Double or Triple modifier not allowed",
|
3232 |
TCL_STATIC);
|
3233 |
return TCL_ERROR;
|
3234 |
}
|
3235 |
if (*p != '\0') {
|
3236 |
Tcl_SetResult(interp, "only one event specification allowed",
|
3237 |
TCL_STATIC);
|
3238 |
return TCL_ERROR;
|
3239 |
}
|
3240 |
|
3241 |
memset((VOID *) &event, 0, sizeof(event));
|
3242 |
event.xany.type = pat.eventType;
|
3243 |
event.xany.serial = NextRequest(Tk_Display(tkwin));
|
3244 |
event.xany.send_event = False;
|
3245 |
if (windowName[0]) {
|
3246 |
event.xany.window = Tk_WindowId(tkwin);
|
3247 |
} else {
|
3248 |
event.xany.window = RootWindow(Tk_Display(tkwin), Tk_ScreenNumber(tkwin));
|
3249 |
}
|
3250 |
event.xany.display = Tk_Display(tkwin);
|
3251 |
|
3252 |
flags = flagArray[event.xany.type];
|
3253 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL)) {
|
3254 |
event.xkey.state = pat.needMods;
|
3255 |
if ((flags & KEY) && (event.xany.type != MouseWheelEvent)) {
|
3256 |
TkpSetKeycodeAndState(tkwin, pat.detail.keySym, &event);
|
3257 |
} else if (flags & BUTTON) {
|
3258 |
event.xbutton.button = pat.detail.button;
|
3259 |
} else if (flags & VIRTUAL) {
|
3260 |
((XVirtualEvent *) &event)->name = pat.detail.name;
|
3261 |
}
|
3262 |
}
|
3263 |
if (flags & (CREATE|DESTROY|UNMAP|MAP|REPARENT|CONFIG|GRAVITY|CIRC)) {
|
3264 |
event.xcreatewindow.window = event.xany.window;
|
3265 |
}
|
3266 |
|
3267 |
/*
|
3268 |
* Process the remaining arguments to fill in additional fields
|
3269 |
* of the event.
|
3270 |
*/
|
3271 |
|
3272 |
synch = 1;
|
3273 |
warp = 0;
|
3274 |
pos = TCL_QUEUE_TAIL;
|
3275 |
for (i = 2; i < objc; i += 2) {
|
3276 |
Tcl_Obj *optionPtr, *valuePtr;
|
3277 |
int index;
|
3278 |
|
3279 |
optionPtr = objv[i];
|
3280 |
valuePtr = objv[i + 1];
|
3281 |
|
3282 |
if (Tcl_GetIndexFromObj(interp, optionPtr, fieldStrings, "option",
|
3283 |
TCL_EXACT, &index) != TCL_OK) {
|
3284 |
return TCL_ERROR;
|
3285 |
}
|
3286 |
if (objc & 1) {
|
3287 |
/*
|
3288 |
* This test occurs after Tcl_GetIndexFromObj() so that
|
3289 |
* "event generate <Button> -xyz" will return the error message
|
3290 |
* that "-xyz" is a bad option, rather than that the value
|
3291 |
* for "-xyz" is missing.
|
3292 |
*/
|
3293 |
|
3294 |
Tcl_AppendResult(interp, "value for \"",
|
3295 |
Tcl_GetStringFromObj(optionPtr, NULL), "\" missing",
|
3296 |
(char *) NULL);
|
3297 |
return TCL_ERROR;
|
3298 |
}
|
3299 |
|
3300 |
switch ((enum field) index) {
|
3301 |
case EVENT_WARP: {
|
3302 |
if (Tcl_GetBooleanFromObj(interp, valuePtr, &warp) != TCL_OK) {
|
3303 |
return TCL_ERROR;
|
3304 |
}
|
3305 |
if (!(flags & (KEY_BUTTON_MOTION_VIRTUAL))) {
|
3306 |
goto badopt;
|
3307 |
}
|
3308 |
break;
|
3309 |
}
|
3310 |
case EVENT_WHEN: {
|
3311 |
pos = (Tcl_QueuePosition) TkFindStateNumObj(interp, optionPtr,
|
3312 |
queuePosition, valuePtr);
|
3313 |
if ((int) pos < -1) {
|
3314 |
return TCL_ERROR;
|
3315 |
}
|
3316 |
synch = 0;
|
3317 |
if ((int) pos == -1) {
|
3318 |
synch = 1;
|
3319 |
}
|
3320 |
break;
|
3321 |
}
|
3322 |
case EVENT_ABOVE: {
|
3323 |
if (NameToWindow(interp, tkwin, valuePtr, &tkwin2) != TCL_OK) {
|
3324 |
return TCL_ERROR;
|
3325 |
}
|
3326 |
if (flags & CONFIG) {
|
3327 |
event.xconfigure.above = Tk_WindowId(tkwin2);
|
3328 |
} else {
|
3329 |
goto badopt;
|
3330 |
}
|
3331 |
break;
|
3332 |
}
|
3333 |
case EVENT_BORDER: {
|
3334 |
if (Tk_GetPixelsFromObj(interp, tkwin, valuePtr, &number) != TCL_OK) {
|
3335 |
return TCL_ERROR;
|
3336 |
}
|
3337 |
if (flags & (CREATE|CONFIG)) {
|
3338 |
event.xcreatewindow.border_width = number;
|
3339 |
} else {
|
3340 |
goto badopt;
|
3341 |
}
|
3342 |
break;
|
3343 |
}
|
3344 |
case EVENT_BUTTON: {
|
3345 |
if (Tcl_GetIntFromObj(interp, valuePtr, &number) != TCL_OK) {
|
3346 |
return TCL_ERROR;
|
3347 |
}
|
3348 |
if (flags & BUTTON) {
|
3349 |
event.xbutton.button = number;
|
3350 |
} else {
|
3351 |
goto badopt;
|
3352 |
}
|
3353 |
break;
|
3354 |
}
|
3355 |
case EVENT_COUNT: {
|
3356 |
if (Tcl_GetIntFromObj(interp, valuePtr, &number) != TCL_OK) {
|
3357 |
return TCL_ERROR;
|
3358 |
}
|
3359 |
if (flags & EXPOSE) {
|
3360 |
event.xexpose.count = number;
|
3361 |
} else {
|
3362 |
goto badopt;
|
3363 |
}
|
3364 |
break;
|
3365 |
}
|
3366 |
case EVENT_DELTA: {
|
3367 |
if (Tcl_GetIntFromObj(interp, valuePtr, &number) != TCL_OK) {
|
3368 |
return TCL_ERROR;
|
3369 |
}
|
3370 |
if ((flags & KEY) && (event.xkey.type == MouseWheelEvent)) {
|
3371 |
event.xkey.keycode = number;
|
3372 |
} else {
|
3373 |
goto badopt;
|
3374 |
}
|
3375 |
break;
|
3376 |
}
|
3377 |
case EVENT_DETAIL: {
|
3378 |
number = TkFindStateNumObj(interp, optionPtr, notifyDetail,
|
3379 |
valuePtr);
|
3380 |
if (number < 0) {
|
3381 |
return TCL_ERROR;
|
3382 |
}
|
3383 |
if (flags & FOCUS) {
|
3384 |
event.xfocus.detail = number;
|
3385 |
} else if (flags & CROSSING) {
|
3386 |
event.xcrossing.detail = number;
|
3387 |
} else {
|
3388 |
goto badopt;
|
3389 |
}
|
3390 |
break;
|
3391 |
}
|
3392 |
case EVENT_FOCUS: {
|
3393 |
if (Tcl_GetBooleanFromObj(interp, valuePtr, &number) != TCL_OK) {
|
3394 |
return TCL_ERROR;
|
3395 |
}
|
3396 |
if (flags & CROSSING) {
|
3397 |
event.xcrossing.focus = number;
|
3398 |
} else {
|
3399 |
goto badopt;
|
3400 |
}
|
3401 |
break;
|
3402 |
}
|
3403 |
case EVENT_HEIGHT: {
|
3404 |
if (Tk_GetPixelsFromObj(interp, tkwin, valuePtr, &number) != TCL_OK) {
|
3405 |
return TCL_ERROR;
|
3406 |
}
|
3407 |
if (flags & EXPOSE) {
|
3408 |
event.xexpose.height = number;
|
3409 |
} else if (flags & CONFIG) {
|
3410 |
event.xconfigure.height = number;
|
3411 |
} else {
|
3412 |
goto badopt;
|
3413 |
}
|
3414 |
break;
|
3415 |
}
|
3416 |
case EVENT_KEYCODE: {
|
3417 |
if (Tcl_GetIntFromObj(interp, valuePtr, &number) != TCL_OK) {
|
3418 |
return TCL_ERROR;
|
3419 |
}
|
3420 |
if ((flags & KEY) && (event.xkey.type != MouseWheelEvent)) {
|
3421 |
event.xkey.keycode = number;
|
3422 |
} else {
|
3423 |
goto badopt;
|
3424 |
}
|
3425 |
break;
|
3426 |
}
|
3427 |
case EVENT_KEYSYM: {
|
3428 |
KeySym keysym;
|
3429 |
char *value;
|
3430 |
|
3431 |
value = Tcl_GetStringFromObj(valuePtr, NULL);
|
3432 |
keysym = TkStringToKeysym(value);
|
3433 |
if (keysym == NoSymbol) {
|
3434 |
Tcl_AppendResult(interp, "unknown keysym \"", value, "\"",
|
3435 |
(char *) NULL);
|
3436 |
return TCL_ERROR;
|
3437 |
}
|
3438 |
|
3439 |
TkpSetKeycodeAndState(tkwin, keysym, &event);
|
3440 |
if (event.xkey.keycode == 0) {
|
3441 |
Tcl_AppendResult(interp, "no keycode for keysym \"", value,
|
3442 |
"\"", (char *) NULL);
|
3443 |
return TCL_ERROR;
|
3444 |
}
|
3445 |
if (!(flags & KEY) || (event.xkey.type == MouseWheelEvent)) {
|
3446 |
goto badopt;
|
3447 |
}
|
3448 |
break;
|
3449 |
}
|
3450 |
case EVENT_MODE: {
|
3451 |
number = TkFindStateNumObj(interp, optionPtr, notifyMode,
|
3452 |
valuePtr);
|
3453 |
if (number < 0) {
|
3454 |
return TCL_ERROR;
|
3455 |
}
|
3456 |
if (flags & CROSSING) {
|
3457 |
event.xcrossing.mode = number;
|
3458 |
} else if (flags & FOCUS) {
|
3459 |
event.xfocus.mode = number;
|
3460 |
} else {
|
3461 |
goto badopt;
|
3462 |
}
|
3463 |
break;
|
3464 |
}
|
3465 |
case EVENT_OVERRIDE: {
|
3466 |
if (Tcl_GetBooleanFromObj(interp, valuePtr, &number) != TCL_OK) {
|
3467 |
return TCL_ERROR;
|
3468 |
}
|
3469 |
if (flags & CREATE) {
|
3470 |
event.xcreatewindow.override_redirect = number;
|
3471 |
} else if (flags & MAP) {
|
3472 |
event.xmap.override_redirect = number;
|
3473 |
} else if (flags & REPARENT) {
|
3474 |
event.xreparent.override_redirect = number;
|
3475 |
} else if (flags & CONFIG) {
|
3476 |
event.xconfigure.override_redirect = number;
|
3477 |
} else {
|
3478 |
goto badopt;
|
3479 |
}
|
3480 |
break;
|
3481 |
}
|
3482 |
case EVENT_PLACE: {
|
3483 |
number = TkFindStateNumObj(interp, optionPtr, circPlace,
|
3484 |
valuePtr);
|
3485 |
if (number < 0) {
|
3486 |
return TCL_ERROR;
|
3487 |
}
|
3488 |
if (flags & CIRC) {
|
3489 |
event.xcirculate.place = number;
|
3490 |
} else {
|
3491 |
goto badopt;
|
3492 |
}
|
3493 |
break;
|
3494 |
}
|
3495 |
case EVENT_ROOT: {
|
3496 |
if (NameToWindow(interp, tkwin, valuePtr, &tkwin2) != TCL_OK) {
|
3497 |
return TCL_ERROR;
|
3498 |
}
|
3499 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL|CROSSING)) {
|
3500 |
event.xkey.root = Tk_WindowId(tkwin2);
|
3501 |
} else {
|
3502 |
goto badopt;
|
3503 |
}
|
3504 |
break;
|
3505 |
}
|
3506 |
case EVENT_ROOTX: {
|
3507 |
if (Tk_GetPixelsFromObj(interp, tkwin, valuePtr, &number) != TCL_OK) {
|
3508 |
return TCL_ERROR;
|
3509 |
}
|
3510 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL|CROSSING)) {
|
3511 |
event.xkey.x_root = number;
|
3512 |
} else {
|
3513 |
goto badopt;
|
3514 |
}
|
3515 |
break;
|
3516 |
}
|
3517 |
case EVENT_ROOTY: {
|
3518 |
if (Tk_GetPixelsFromObj(interp, tkwin, valuePtr, &number) != TCL_OK) {
|
3519 |
return TCL_ERROR;
|
3520 |
}
|
3521 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL|CROSSING)) {
|
3522 |
event.xkey.y_root = number;
|
3523 |
} else {
|
3524 |
goto badopt;
|
3525 |
}
|
3526 |
break;
|
3527 |
}
|
3528 |
case EVENT_SEND: {
|
3529 |
CONST char *value;
|
3530 |
|
3531 |
value = Tcl_GetStringFromObj(valuePtr, NULL);
|
3532 |
if (isdigit(UCHAR(value[0]))) {
|
3533 |
/*
|
3534 |
* Allow arbitrary integer values for the field; they
|
3535 |
* are needed by a few of the tests in the Tk test suite.
|
3536 |
*/
|
3537 |
|
3538 |
if (Tcl_GetIntFromObj(interp, valuePtr, &number)
|
3539 |
!= TCL_OK) {
|
3540 |
return TCL_ERROR;
|
3541 |
}
|
3542 |
} else {
|
3543 |
if (Tcl_GetBooleanFromObj(interp, valuePtr, &number)
|
3544 |
!= TCL_OK) {
|
3545 |
return TCL_ERROR;
|
3546 |
}
|
3547 |
}
|
3548 |
event.xany.send_event = number;
|
3549 |
break;
|
3550 |
}
|
3551 |
case EVENT_SERIAL: {
|
3552 |
if (Tcl_GetIntFromObj(interp, valuePtr, &number) != TCL_OK) {
|
3553 |
return TCL_ERROR;
|
3554 |
}
|
3555 |
event.xany.serial = number;
|
3556 |
break;
|
3557 |
}
|
3558 |
case EVENT_STATE: {
|
3559 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL|CROSSING)) {
|
3560 |
if (Tcl_GetIntFromObj(interp, valuePtr, &number)
|
3561 |
!= TCL_OK) {
|
3562 |
return TCL_ERROR;
|
3563 |
}
|
3564 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL)) {
|
3565 |
event.xkey.state = number;
|
3566 |
} else {
|
3567 |
event.xcrossing.state = number;
|
3568 |
}
|
3569 |
} else if (flags & VISIBILITY) {
|
3570 |
number = TkFindStateNumObj(interp, optionPtr, visNotify,
|
3571 |
valuePtr);
|
3572 |
if (number < 0) {
|
3573 |
return TCL_ERROR;
|
3574 |
}
|
3575 |
event.xvisibility.state = number;
|
3576 |
} else {
|
3577 |
goto badopt;
|
3578 |
}
|
3579 |
break;
|
3580 |
}
|
3581 |
case EVENT_SUBWINDOW: {
|
3582 |
if (NameToWindow(interp, tkwin, valuePtr, &tkwin2) != TCL_OK) {
|
3583 |
return TCL_ERROR;
|
3584 |
}
|
3585 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL|CROSSING)) {
|
3586 |
event.xkey.subwindow = Tk_WindowId(tkwin2);
|
3587 |
} else {
|
3588 |
goto badopt;
|
3589 |
}
|
3590 |
break;
|
3591 |
}
|
3592 |
case EVENT_TIME: {
|
3593 |
if (Tcl_GetIntFromObj(interp, valuePtr, &number) != TCL_OK) {
|
3594 |
return TCL_ERROR;
|
3595 |
}
|
3596 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL|CROSSING)) {
|
3597 |
event.xkey.time = (Time) number;
|
3598 |
} else if (flags & PROP) {
|
3599 |
event.xproperty.time = (Time) number;
|
3600 |
} else {
|
3601 |
goto badopt;
|
3602 |
}
|
3603 |
break;
|
3604 |
}
|
3605 |
case EVENT_WIDTH: {
|
3606 |
if (Tk_GetPixelsFromObj(interp, tkwin, valuePtr, &number)
|
3607 |
!= TCL_OK) {
|
3608 |
return TCL_ERROR;
|
3609 |
}
|
3610 |
if (flags & EXPOSE) {
|
3611 |
event.xexpose.width = number;
|
3612 |
} else if (flags & (CREATE|CONFIG)) {
|
3613 |
event.xcreatewindow.width = number;
|
3614 |
} else {
|
3615 |
goto badopt;
|
3616 |
}
|
3617 |
break;
|
3618 |
}
|
3619 |
case EVENT_WINDOW: {
|
3620 |
if (NameToWindow(interp, tkwin, valuePtr, &tkwin2) != TCL_OK) {
|
3621 |
return TCL_ERROR;
|
3622 |
}
|
3623 |
if (flags & (CREATE|DESTROY|UNMAP|MAP|REPARENT|CONFIG
|
3624 |
|GRAVITY|CIRC)) {
|
3625 |
event.xcreatewindow.window = Tk_WindowId(tkwin2);
|
3626 |
} else {
|
3627 |
goto badopt;
|
3628 |
}
|
3629 |
break;
|
3630 |
}
|
3631 |
case EVENT_X: {
|
3632 |
int rootX, rootY;
|
3633 |
|
3634 |
if (Tk_GetPixelsFromObj(interp, tkwin, valuePtr, &number)
|
3635 |
!= TCL_OK) {
|
3636 |
return TCL_ERROR;
|
3637 |
}
|
3638 |
Tk_GetRootCoords(tkwin, &rootX, &rootY);
|
3639 |
rootX += number;
|
3640 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL|CROSSING)) {
|
3641 |
event.xkey.x = number;
|
3642 |
event.xkey.x_root = rootX;
|
3643 |
} else if (flags & EXPOSE) {
|
3644 |
event.xexpose.x = number;
|
3645 |
} else if (flags & (CREATE|CONFIG|GRAVITY)) {
|
3646 |
event.xcreatewindow.x = number;
|
3647 |
} else if (flags & REPARENT) {
|
3648 |
event.xreparent.x = number;
|
3649 |
} else {
|
3650 |
goto badopt;
|
3651 |
}
|
3652 |
break;
|
3653 |
}
|
3654 |
case EVENT_Y: {
|
3655 |
int rootX, rootY;
|
3656 |
|
3657 |
if (Tk_GetPixelsFromObj(interp, tkwin, valuePtr, &number)
|
3658 |
!= TCL_OK) {
|
3659 |
return TCL_ERROR;
|
3660 |
}
|
3661 |
Tk_GetRootCoords(tkwin, &rootX, &rootY);
|
3662 |
rootY += number;
|
3663 |
if (flags & (KEY_BUTTON_MOTION_VIRTUAL|CROSSING)) {
|
3664 |
event.xkey.y = number;
|
3665 |
event.xkey.y_root = rootY;
|
3666 |
} else if (flags & EXPOSE) {
|
3667 |
event.xexpose.y = number;
|
3668 |
} else if (flags & (CREATE|CONFIG|GRAVITY)) {
|
3669 |
event.xcreatewindow.y = number;
|
3670 |
} else if (flags & REPARENT) {
|
3671 |
event.xreparent.y = number;
|
3672 |
} else {
|
3673 |
goto badopt;
|
3674 |
}
|
3675 |
break;
|
3676 |
}
|
3677 |
}
|
3678 |
continue;
|
3679 |
|
3680 |
badopt:
|
3681 |
Tcl_AppendResult(interp, name, " event doesn't accept \"",
|
3682 |
Tcl_GetStringFromObj(optionPtr, NULL), "\" option", NULL);
|
3683 |
return TCL_ERROR;
|
3684 |
}
|
3685 |
if (synch != 0) {
|
3686 |
Tk_HandleEvent(&event);
|
3687 |
} else {
|
3688 |
Tk_QueueWindowEvent(&event, pos);
|
3689 |
}
|
3690 |
/*
|
3691 |
* We only allow warping if the window is mapped
|
3692 |
*/
|
3693 |
if ((warp != 0) && Tk_IsMapped(tkwin)) {
|
3694 |
TkDisplay *dispPtr;
|
3695 |
dispPtr = TkGetDisplay(event.xmotion.display);
|
3696 |
if (!dispPtr->warpInProgress) {
|
3697 |
Tcl_DoWhenIdle(DoWarp, (ClientData) dispPtr);
|
3698 |
dispPtr->warpInProgress = 1;
|
3699 |
}
|
3700 |
dispPtr->warpWindow = event.xany.window;
|
3701 |
dispPtr->warpX = event.xkey.x;
|
3702 |
dispPtr->warpY = event.xkey.y;
|
3703 |
}
|
3704 |
Tcl_ResetResult(interp);
|
3705 |
return TCL_OK;
|
3706 |
|
3707 |
}
|
3708 |
static int
|
3709 |
NameToWindow(interp, mainWin, objPtr, tkwinPtr)
|
3710 |
Tcl_Interp *interp; /* Interp for error return and name lookup. */
|
3711 |
Tk_Window mainWin; /* Main window of application. */
|
3712 |
Tcl_Obj *objPtr; /* Contains name or id string of window. */
|
3713 |
Tk_Window *tkwinPtr; /* Filled with token for window. */
|
3714 |
{
|
3715 |
char *name;
|
3716 |
Tk_Window tkwin;
|
3717 |
int id;
|
3718 |
|
3719 |
name = Tcl_GetStringFromObj(objPtr, NULL);
|
3720 |
if (name[0] == '.') {
|
3721 |
tkwin = Tk_NameToWindow(interp, name, mainWin);
|
3722 |
if (tkwin == NULL) {
|
3723 |
return TCL_ERROR;
|
3724 |
}
|
3725 |
*tkwinPtr = tkwin;
|
3726 |
} else {
|
3727 |
if (TkpScanWindowId(NULL, name, &id) != TCL_OK) {
|
3728 |
Tcl_AppendResult(interp, "bad window name/identifier \"",
|
3729 |
name, "\"", (char *) NULL);
|
3730 |
return TCL_ERROR;
|
3731 |
}
|
3732 |
*tkwinPtr = Tk_IdToWindow(Tk_Display(mainWin), (Window) id);
|
3733 |
}
|
3734 |
return TCL_OK;
|
3735 |
}
|
3736 |
|
3737 |
/*
|
3738 |
*-------------------------------------------------------------------------
|
3739 |
*
|
3740 |
* DoWarp --
|
3741 |
*
|
3742 |
* Perform Warping of X pointer. Executed as an idle handler only.
|
3743 |
*
|
3744 |
* Results:
|
3745 |
* None
|
3746 |
*
|
3747 |
* Side effects:
|
3748 |
* X Pointer will move to a new location.
|
3749 |
*
|
3750 |
*-------------------------------------------------------------------------
|
3751 |
*/
|
3752 |
static void
|
3753 |
DoWarp(clientData)
|
3754 |
ClientData clientData;
|
3755 |
{
|
3756 |
TkDisplay *dispPtr = (TkDisplay *) clientData;
|
3757 |
|
3758 |
XWarpPointer(dispPtr->display, (Window) None, (Window) dispPtr->warpWindow,
|
3759 |
0, 0, 0, 0, (int) dispPtr->warpX, (int) dispPtr->warpY);
|
3760 |
XForceScreenSaver(dispPtr->display, ScreenSaverReset);
|
3761 |
dispPtr->warpInProgress = 0;
|
3762 |
}
|
3763 |
|
3764 |
/*
|
3765 |
*-------------------------------------------------------------------------
|
3766 |
*
|
3767 |
* GetVirtualEventUid --
|
3768 |
*
|
3769 |
* Determine if the given string is in the proper format for a
|
3770 |
* virtual event.
|
3771 |
*
|
3772 |
* Results:
|
3773 |
* The return value is NULL if the virtual event string was
|
3774 |
* not in the proper format. In this case, an error message
|
3775 |
* will be left in the interp's result. Otherwise the return
|
3776 |
* value is a Tk_Uid that represents the virtual event.
|
3777 |
*
|
3778 |
* Side effects:
|
3779 |
* None.
|
3780 |
*
|
3781 |
*-------------------------------------------------------------------------
|
3782 |
*/
|
3783 |
static Tk_Uid
|
3784 |
GetVirtualEventUid(interp, virtString)
|
3785 |
Tcl_Interp *interp;
|
3786 |
char *virtString;
|
3787 |
{
|
3788 |
Tk_Uid uid;
|
3789 |
int length;
|
3790 |
|
3791 |
length = strlen(virtString);
|
3792 |
|
3793 |
if (length < 5 || virtString[0] != '<' || virtString[1] != '<' ||
|
3794 |
virtString[length - 2] != '>' || virtString[length - 1] != '>') {
|
3795 |
Tcl_AppendResult(interp, "virtual event \"", virtString,
|
3796 |
"\" is badly formed", (char *) NULL);
|
3797 |
return NULL;
|
3798 |
}
|
3799 |
virtString[length - 2] = '\0';
|
3800 |
uid = Tk_GetUid(virtString + 2);
|
3801 |
virtString[length - 2] = '>';
|
3802 |
|
3803 |
return uid;
|
3804 |
}
|
3805 |
|
3806 |
|
3807 |
/*
|
3808 |
*----------------------------------------------------------------------
|
3809 |
*
|
3810 |
* FindSequence --
|
3811 |
*
|
3812 |
* Find the entry in the pattern table that corresponds to a
|
3813 |
* particular pattern string, and return a pointer to that
|
3814 |
* entry.
|
3815 |
*
|
3816 |
* Results:
|
3817 |
* The return value is normally a pointer to the PatSeq
|
3818 |
* in patternTable that corresponds to eventString. If an error
|
3819 |
* was found while parsing eventString, or if "create" is 0 and
|
3820 |
* no pattern sequence previously existed, then NULL is returned
|
3821 |
* and the interp's result contains a message describing the problem.
|
3822 |
* If no pattern sequence previously existed for eventString, then
|
3823 |
* a new one is created with a NULL command field. In a successful
|
3824 |
* return, *maskPtr is filled in with a mask of the event types
|
3825 |
* on which the pattern sequence depends.
|
3826 |
*
|
3827 |
* Side effects:
|
3828 |
* A new pattern sequence may be allocated.
|
3829 |
*
|
3830 |
*----------------------------------------------------------------------
|
3831 |
*/
|
3832 |
|
3833 |
static PatSeq *
|
3834 |
FindSequence(interp, patternTablePtr, object, eventString, create,
|
3835 |
allowVirtual, maskPtr)
|
3836 |
Tcl_Interp *interp; /* Interpreter to use for error
|
3837 |
* reporting. */
|
3838 |
Tcl_HashTable *patternTablePtr; /* Table to use for lookup. */
|
3839 |
ClientData object; /* For binding table, token for object with
|
3840 |
* which binding is associated.
|
3841 |
* For virtual event table, NULL. */
|
3842 |
char *eventString; /* String description of pattern to
|
3843 |
* match on. See user documentation
|
3844 |
* for details. */
|
3845 |
int create; /* 0 means don't create the entry if
|
3846 |
* it doesn't already exist. Non-zero
|
3847 |
* means create. */
|
3848 |
int allowVirtual; /* 0 means that virtual events are not
|
3849 |
* allowed in the sequence. Non-zero
|
3850 |
* otherwise. */
|
3851 |
unsigned long *maskPtr; /* *maskPtr is filled in with the event
|
3852 |
* types on which this pattern sequence
|
3853 |
* depends. */
|
3854 |
{
|
3855 |
|
3856 |
Pattern pats[EVENT_BUFFER_SIZE];
|
3857 |
int numPats, virtualFound;
|
3858 |
char *p;
|
3859 |
Pattern *patPtr;
|
3860 |
PatSeq *psPtr;
|
3861 |
Tcl_HashEntry *hPtr;
|
3862 |
int flags, count, new;
|
3863 |
size_t sequenceSize;
|
3864 |
unsigned long eventMask;
|
3865 |
PatternTableKey key;
|
3866 |
|
3867 |
/*
|
3868 |
*-------------------------------------------------------------
|
3869 |
* Step 1: parse the pattern string to produce an array
|
3870 |
* of Patterns. The array is generated backwards, so
|
3871 |
* that the lowest-indexed pattern corresponds to the last
|
3872 |
* event that must occur.
|
3873 |
*-------------------------------------------------------------
|
3874 |
*/
|
3875 |
|
3876 |
p = eventString;
|
3877 |
flags = 0;
|
3878 |
eventMask = 0;
|
3879 |
virtualFound = 0;
|
3880 |
|
3881 |
patPtr = &pats[EVENT_BUFFER_SIZE-1];
|
3882 |
for (numPats = 0; numPats < EVENT_BUFFER_SIZE; numPats++, patPtr--) {
|
3883 |
while (isspace(UCHAR(*p))) {
|
3884 |
p++;
|
3885 |
}
|
3886 |
if (*p == '\0') {
|
3887 |
break;
|
3888 |
}
|
3889 |
|
3890 |
count = ParseEventDescription(interp, &p, patPtr, &eventMask);
|
3891 |
if (count == 0) {
|
3892 |
return NULL;
|
3893 |
}
|
3894 |
|
3895 |
if (eventMask & VirtualEventMask) {
|
3896 |
if (allowVirtual == 0) {
|
3897 |
Tcl_SetResult(interp,
|
3898 |
"virtual event not allowed in definition of another virtual event",
|
3899 |
TCL_STATIC);
|
3900 |
return NULL;
|
3901 |
}
|
3902 |
virtualFound = 1;
|
3903 |
}
|
3904 |
|
3905 |
/*
|
3906 |
* Replicate events for DOUBLE, TRIPLE, QUADRUPLE.
|
3907 |
*/
|
3908 |
|
3909 |
while ((count-- > 1) && (numPats < EVENT_BUFFER_SIZE-1)) {
|
3910 |
flags |= PAT_NEARBY;
|
3911 |
patPtr[-1] = patPtr[0];
|
3912 |
patPtr--;
|
3913 |
numPats++;
|
3914 |
}
|
3915 |
}
|
3916 |
|
3917 |
/*
|
3918 |
*-------------------------------------------------------------
|
3919 |
* Step 2: find the sequence in the binding table if it exists,
|
3920 |
* and add a new sequence to the table if it doesn't.
|
3921 |
*-------------------------------------------------------------
|
3922 |
*/
|
3923 |
|
3924 |
if (numPats == 0) {
|
3925 |
Tcl_SetResult(interp, "no events specified in binding", TCL_STATIC);
|
3926 |
return NULL;
|
3927 |
}
|
3928 |
if ((numPats > 1) && (virtualFound != 0)) {
|
3929 |
Tcl_SetResult(interp, "virtual events may not be composed",
|
3930 |
TCL_STATIC);
|
3931 |
return NULL;
|
3932 |
}
|
3933 |
|
3934 |
patPtr = &pats[EVENT_BUFFER_SIZE-numPats];
|
3935 |
memset(&key, 0, sizeof(key));
|
3936 |
key.object = object;
|
3937 |
key.type = patPtr->eventType;
|
3938 |
key.detail = patPtr->detail;
|
3939 |
hPtr = Tcl_CreateHashEntry(patternTablePtr, (char *) &key, &new);
|
3940 |
sequenceSize = numPats*sizeof(Pattern);
|
3941 |
if (!new) {
|
3942 |
for (psPtr = (PatSeq *) Tcl_GetHashValue(hPtr); psPtr != NULL;
|
3943 |
psPtr = psPtr->nextSeqPtr) {
|
3944 |
if ((numPats == psPtr->numPats)
|
3945 |
&& ((flags & PAT_NEARBY) == (psPtr->flags & PAT_NEARBY))
|
3946 |
&& (memcmp((char *) patPtr, (char *) psPtr->pats,
|
3947 |
sequenceSize) == 0)) {
|
3948 |
goto done;
|
3949 |
}
|
3950 |
}
|
3951 |
}
|
3952 |
if (!create) {
|
3953 |
if (new) {
|
3954 |
Tcl_DeleteHashEntry(hPtr);
|
3955 |
}
|
3956 |
/*
|
3957 |
* No binding exists for the sequence, so return an empty error.
|
3958 |
* This is a special error that the caller will check for in order
|
3959 |
* to silently ignore this case. This is a hack that maintains
|
3960 |
* backward compatibility for Tk_GetBinding but the various "bind"
|
3961 |
* commands silently ignore missing bindings.
|
3962 |
*/
|
3963 |
|
3964 |
return NULL;
|
3965 |
}
|
3966 |
psPtr = (PatSeq *) ckalloc((unsigned) (sizeof(PatSeq)
|
3967 |
+ (numPats-1)*sizeof(Pattern)));
|
3968 |
psPtr->numPats = numPats;
|
3969 |
psPtr->eventProc = NULL;
|
3970 |
psPtr->freeProc = NULL;
|
3971 |
psPtr->clientData = NULL;
|
3972 |
psPtr->flags = flags;
|
3973 |
psPtr->refCount = 0;
|
3974 |
psPtr->nextSeqPtr = (PatSeq *) Tcl_GetHashValue(hPtr);
|
3975 |
psPtr->hPtr = hPtr;
|
3976 |
psPtr->voPtr = NULL;
|
3977 |
psPtr->nextObjPtr = NULL;
|
3978 |
Tcl_SetHashValue(hPtr, psPtr);
|
3979 |
|
3980 |
memcpy((VOID *) psPtr->pats, (VOID *) patPtr, sequenceSize);
|
3981 |
|
3982 |
done:
|
3983 |
*maskPtr = eventMask;
|
3984 |
return psPtr;
|
3985 |
}
|
3986 |
|
3987 |
/*
|
3988 |
*---------------------------------------------------------------------------
|
3989 |
*
|
3990 |
* ParseEventDescription --
|
3991 |
*
|
3992 |
* Fill Pattern buffer with information about event from
|
3993 |
* event string.
|
3994 |
*
|
3995 |
* Results:
|
3996 |
* Leaves error message in interp and returns 0 if there was an
|
3997 |
* error due to a badly formed event string. Returns 1 if proper
|
3998 |
* event was specified, 2 if Double modifier was used in event
|
3999 |
* string, or 3 if Triple was used.
|
4000 |
*
|
4001 |
* Side effects:
|
4002 |
* On exit, eventStringPtr points to rest of event string (after the
|
4003 |
* closing '>', so that this procedure can be called repeatedly to
|
4004 |
* parse all the events in the entire sequence.
|
4005 |
*
|
4006 |
*---------------------------------------------------------------------------
|
4007 |
*/
|
4008 |
|
4009 |
static int
|
4010 |
ParseEventDescription(interp, eventStringPtr, patPtr,
|
4011 |
eventMaskPtr)
|
4012 |
Tcl_Interp *interp; /* For error messages. */
|
4013 |
char **eventStringPtr; /* On input, holds a pointer to start of
|
4014 |
* event string. On exit, gets pointer to
|
4015 |
* rest of string after parsed event. */
|
4016 |
Pattern *patPtr; /* Filled with the pattern parsed from the
|
4017 |
* event string. */
|
4018 |
unsigned long *eventMaskPtr;/* Filled with event mask of matched event. */
|
4019 |
|
4020 |
{
|
4021 |
char *p;
|
4022 |
unsigned long eventMask;
|
4023 |
int count, eventFlags;
|
4024 |
#define FIELD_SIZE 48
|
4025 |
char field[FIELD_SIZE];
|
4026 |
Tcl_HashEntry *hPtr;
|
4027 |
|
4028 |
p = *eventStringPtr;
|
4029 |
|
4030 |
patPtr->eventType = -1;
|
4031 |
patPtr->needMods = 0;
|
4032 |
patPtr->detail.clientData = 0;
|
4033 |
|
4034 |
eventMask = 0;
|
4035 |
count = 1;
|
4036 |
|
4037 |
/*
|
4038 |
* Handle simple ASCII characters.
|
4039 |
*/
|
4040 |
|
4041 |
if (*p != '<') {
|
4042 |
char string[2];
|
4043 |
|
4044 |
patPtr->eventType = KeyPress;
|
4045 |
eventMask = KeyPressMask;
|
4046 |
string[0] = *p;
|
4047 |
string[1] = 0;
|
4048 |
patPtr->detail.keySym = TkStringToKeysym(string);
|
4049 |
if (patPtr->detail.keySym == NoSymbol) {
|
4050 |
if (isprint(UCHAR(*p))) {
|
4051 |
patPtr->detail.keySym = *p;
|
4052 |
} else {
|
4053 |
char buf[64];
|
4054 |
|
4055 |
sprintf(buf, "bad ASCII character 0x%x", (unsigned char) *p);
|
4056 |
Tcl_SetResult(interp, buf, TCL_VOLATILE);
|
4057 |
return 0;
|
4058 |
}
|
4059 |
}
|
4060 |
p++;
|
4061 |
goto end;
|
4062 |
}
|
4063 |
|
4064 |
/*
|
4065 |
* A fancier event description. This can be either a virtual event
|
4066 |
* or a physical event.
|
4067 |
*
|
4068 |
* A virtual event description consists of:
|
4069 |
*
|
4070 |
* 1. double open angle brackets.
|
4071 |
* 2. virtual event name.
|
4072 |
* 3. double close angle brackets.
|
4073 |
*
|
4074 |
* A physical event description consists of:
|
4075 |
*
|
4076 |
* 1. open angle bracket.
|
4077 |
* 2. any number of modifiers, each followed by spaces
|
4078 |
* or dashes.
|
4079 |
* 3. an optional event name.
|
4080 |
* 4. an option button or keysym name. Either this or
|
4081 |
* item 3 *must* be present; if both are present
|
4082 |
* then they are separated by spaces or dashes.
|
4083 |
* 5. a close angle bracket.
|
4084 |
*/
|
4085 |
|
4086 |
p++;
|
4087 |
if (*p == '<') {
|
4088 |
/*
|
4089 |
* This is a virtual event: soak up all the characters up to
|
4090 |
* the next '>'.
|
4091 |
*/
|
4092 |
|
4093 |
char *field = p + 1;
|
4094 |
p = strchr(field, '>');
|
4095 |
if (p == field) {
|
4096 |
Tcl_SetResult(interp, "virtual event \"<<>>\" is badly formed",
|
4097 |
TCL_STATIC);
|
4098 |
return 0;
|
4099 |
}
|
4100 |
if ((p == NULL) || (p[1] != '>')) {
|
4101 |
Tcl_SetResult(interp, "missing \">\" in virtual binding",
|
4102 |
TCL_STATIC);
|
4103 |
return 0;
|
4104 |
}
|
4105 |
*p = '\0';
|
4106 |
patPtr->eventType = VirtualEvent;
|
4107 |
eventMask = VirtualEventMask;
|
4108 |
patPtr->detail.name = Tk_GetUid(field);
|
4109 |
*p = '>';
|
4110 |
|
4111 |
p += 2;
|
4112 |
goto end;
|
4113 |
}
|
4114 |
|
4115 |
while (1) {
|
4116 |
ModInfo *modPtr;
|
4117 |
p = GetField(p, field, FIELD_SIZE);
|
4118 |
if (*p == '>') {
|
4119 |
/*
|
4120 |
* This solves the problem of, e.g., <Control-M> being
|
4121 |
* misinterpreted as Control + Meta + missing keysym
|
4122 |
* instead of Control + KeyPress + M.
|
4123 |
*/
|
4124 |
break;
|
4125 |
}
|
4126 |
hPtr = Tcl_FindHashEntry(&modTable, field);
|
4127 |
if (hPtr == NULL) {
|
4128 |
break;
|
4129 |
}
|
4130 |
modPtr = (ModInfo *) Tcl_GetHashValue(hPtr);
|
4131 |
patPtr->needMods |= modPtr->mask;
|
4132 |
if (modPtr->flags & (MULT_CLICKS)) {
|
4133 |
int i = modPtr->flags & MULT_CLICKS;
|
4134 |
count = 2;
|
4135 |
while (i >>= 1) count++;
|
4136 |
}
|
4137 |
while ((*p == '-') || isspace(UCHAR(*p))) {
|
4138 |
p++;
|
4139 |
}
|
4140 |
}
|
4141 |
|
4142 |
eventFlags = 0;
|
4143 |
hPtr = Tcl_FindHashEntry(&eventTable, field);
|
4144 |
if (hPtr != NULL) {
|
4145 |
EventInfo *eiPtr;
|
4146 |
eiPtr = (EventInfo *) Tcl_GetHashValue(hPtr);
|
4147 |
|
4148 |
patPtr->eventType = eiPtr->type;
|
4149 |
eventFlags = flagArray[eiPtr->type];
|
4150 |
eventMask = eiPtr->eventMask;
|
4151 |
while ((*p == '-') || isspace(UCHAR(*p))) {
|
4152 |
p++;
|
4153 |
}
|
4154 |
p = GetField(p, field, FIELD_SIZE);
|
4155 |
}
|
4156 |
if (*field != '\0') {
|
4157 |
if ((*field >= '1') && (*field <= '5') && (field[1] == '\0')) {
|
4158 |
if (eventFlags == 0) {
|
4159 |
patPtr->eventType = ButtonPress;
|
4160 |
eventMask = ButtonPressMask;
|
4161 |
} else if (eventFlags & KEY) {
|
4162 |
goto getKeysym;
|
4163 |
} else if ((eventFlags & BUTTON) == 0) {
|
4164 |
Tcl_AppendResult(interp, "specified button \"", field,
|
4165 |
"\" for non-button event", (char *) NULL);
|
4166 |
return 0;
|
4167 |
}
|
4168 |
patPtr->detail.button = (*field - '0');
|
4169 |
} else {
|
4170 |
getKeysym:
|
4171 |
patPtr->detail.keySym = TkStringToKeysym(field);
|
4172 |
if (patPtr->detail.keySym == NoSymbol) {
|
4173 |
Tcl_AppendResult(interp, "bad event type or keysym \"",
|
4174 |
field, "\"", (char *) NULL);
|
4175 |
return 0;
|
4176 |
}
|
4177 |
if (eventFlags == 0) {
|
4178 |
patPtr->eventType = KeyPress;
|
4179 |
eventMask = KeyPressMask;
|
4180 |
} else if ((eventFlags & KEY) == 0) {
|
4181 |
Tcl_AppendResult(interp, "specified keysym \"", field,
|
4182 |
"\" for non-key event", (char *) NULL);
|
4183 |
return 0;
|
4184 |
}
|
4185 |
}
|
4186 |
} else if (eventFlags == 0) {
|
4187 |
Tcl_SetResult(interp, "no event type or button # or keysym",
|
4188 |
TCL_STATIC);
|
4189 |
return 0;
|
4190 |
}
|
4191 |
|
4192 |
while ((*p == '-') || isspace(UCHAR(*p))) {
|
4193 |
p++;
|
4194 |
}
|
4195 |
if (*p != '>') {
|
4196 |
while (*p != '\0') {
|
4197 |
p++;
|
4198 |
if (*p == '>') {
|
4199 |
Tcl_SetResult(interp,
|
4200 |
"extra characters after detail in binding",
|
4201 |
TCL_STATIC);
|
4202 |
return 0;
|
4203 |
}
|
4204 |
}
|
4205 |
Tcl_SetResult(interp, "missing \">\" in binding", TCL_STATIC);
|
4206 |
return 0;
|
4207 |
}
|
4208 |
p++;
|
4209 |
|
4210 |
end:
|
4211 |
*eventStringPtr = p;
|
4212 |
*eventMaskPtr |= eventMask;
|
4213 |
return count;
|
4214 |
}
|
4215 |
|
4216 |
/*
|
4217 |
*----------------------------------------------------------------------
|
4218 |
*
|
4219 |
* GetField --
|
4220 |
*
|
4221 |
* Used to parse pattern descriptions. Copies up to
|
4222 |
* size characters from p to copy, stopping at end of
|
4223 |
* string, space, "-", ">", or whenever size is
|
4224 |
* exceeded.
|
4225 |
*
|
4226 |
* Results:
|
4227 |
* The return value is a pointer to the character just
|
4228 |
* after the last one copied (usually "-" or space or
|
4229 |
* ">", but could be anything if size was exceeded).
|
4230 |
* Also places NULL-terminated string (up to size
|
4231 |
* character, including NULL), at copy.
|
4232 |
*
|
4233 |
* Side effects:
|
4234 |
* None.
|
4235 |
*
|
4236 |
*----------------------------------------------------------------------
|
4237 |
*/
|
4238 |
|
4239 |
static char *
|
4240 |
GetField(p, copy, size)
|
4241 |
char *p; /* Pointer to part of pattern. */
|
4242 |
char *copy; /* Place to copy field. */
|
4243 |
int size; /* Maximum number of characters to
|
4244 |
* copy. */
|
4245 |
{
|
4246 |
while ((*p != '\0') && !isspace(UCHAR(*p)) && (*p != '>')
|
4247 |
&& (*p != '-') && (size > 1)) {
|
4248 |
*copy = *p;
|
4249 |
p++;
|
4250 |
copy++;
|
4251 |
size--;
|
4252 |
}
|
4253 |
*copy = '\0';
|
4254 |
return p;
|
4255 |
}
|
4256 |
|
4257 |
/*
|
4258 |
*---------------------------------------------------------------------------
|
4259 |
*
|
4260 |
* GetPatternString --
|
4261 |
*
|
4262 |
* Produce a string version of the given event, for displaying to
|
4263 |
* the user.
|
4264 |
*
|
4265 |
* Results:
|
4266 |
* The string is left in dsPtr.
|
4267 |
*
|
4268 |
* Side effects:
|
4269 |
* It is the caller's responsibility to initialize the DString before
|
4270 |
* and to free it after calling this procedure.
|
4271 |
*
|
4272 |
*---------------------------------------------------------------------------
|
4273 |
*/
|
4274 |
static void
|
4275 |
GetPatternString(psPtr, dsPtr)
|
4276 |
PatSeq *psPtr;
|
4277 |
Tcl_DString *dsPtr;
|
4278 |
{
|
4279 |
Pattern *patPtr;
|
4280 |
char c, buffer[TCL_INTEGER_SPACE];
|
4281 |
int patsLeft, needMods;
|
4282 |
ModInfo *modPtr;
|
4283 |
EventInfo *eiPtr;
|
4284 |
|
4285 |
/*
|
4286 |
* The order of the patterns in the sequence is backwards from the order
|
4287 |
* in which they must be output.
|
4288 |
*/
|
4289 |
|
4290 |
for (patsLeft = psPtr->numPats, patPtr = &psPtr->pats[psPtr->numPats - 1];
|
4291 |
patsLeft > 0; patsLeft--, patPtr--) {
|
4292 |
|
4293 |
/*
|
4294 |
* Check for simple case of an ASCII character.
|
4295 |
*/
|
4296 |
|
4297 |
if ((patPtr->eventType == KeyPress)
|
4298 |
&& ((psPtr->flags & PAT_NEARBY) == 0)
|
4299 |
&& (patPtr->needMods == 0)
|
4300 |
&& (patPtr->detail.keySym < 128)
|
4301 |
&& isprint(UCHAR(patPtr->detail.keySym))
|
4302 |
&& (patPtr->detail.keySym != '<')
|
4303 |
&& (patPtr->detail.keySym != ' ')) {
|
4304 |
|
4305 |
c = (char) patPtr->detail.keySym;
|
4306 |
Tcl_DStringAppend(dsPtr, &c, 1);
|
4307 |
continue;
|
4308 |
}
|
4309 |
|
4310 |
/*
|
4311 |
* Check for virtual event.
|
4312 |
*/
|
4313 |
|
4314 |
if (patPtr->eventType == VirtualEvent) {
|
4315 |
Tcl_DStringAppend(dsPtr, "<<", 2);
|
4316 |
Tcl_DStringAppend(dsPtr, patPtr->detail.name, -1);
|
4317 |
Tcl_DStringAppend(dsPtr, ">>", 2);
|
4318 |
continue;
|
4319 |
}
|
4320 |
|
4321 |
/*
|
4322 |
* It's a more general event specification. First check
|
4323 |
* for "Double", "Triple", "Quadruple", then modifiers,
|
4324 |
* then event type, then keysym or button detail.
|
4325 |
*/
|
4326 |
|
4327 |
Tcl_DStringAppend(dsPtr, "<", 1);
|
4328 |
if ((psPtr->flags & PAT_NEARBY) && (patsLeft > 1)
|
4329 |
&& (memcmp((char *) patPtr, (char *) (patPtr-1),
|
4330 |
sizeof(Pattern)) == 0)) {
|
4331 |
patsLeft--;
|
4332 |
patPtr--;
|
4333 |
if ((patsLeft > 1) && (memcmp((char *) patPtr,
|
4334 |
(char *) (patPtr-1), sizeof(Pattern)) == 0)) {
|
4335 |
patsLeft--;
|
4336 |
patPtr--;
|
4337 |
if ((patsLeft > 1) && (memcmp((char *) patPtr,
|
4338 |
(char *) (patPtr-1), sizeof(Pattern)) == 0)) {
|
4339 |
patsLeft--;
|
4340 |
patPtr--;
|
4341 |
Tcl_DStringAppend(dsPtr, "Quadruple-", 10);
|
4342 |
} else {
|
4343 |
Tcl_DStringAppend(dsPtr, "Triple-", 7);
|
4344 |
}
|
4345 |
} else {
|
4346 |
Tcl_DStringAppend(dsPtr, "Double-", 7);
|
4347 |
}
|
4348 |
}
|
4349 |
for (needMods = patPtr->needMods, modPtr = modArray;
|
4350 |
needMods != 0; modPtr++) {
|
4351 |
if (modPtr->mask & needMods) {
|
4352 |
needMods &= ~modPtr->mask;
|
4353 |
Tcl_DStringAppend(dsPtr, modPtr->name, -1);
|
4354 |
Tcl_DStringAppend(dsPtr, "-", 1);
|
4355 |
}
|
4356 |
}
|
4357 |
for (eiPtr = eventArray; eiPtr->name != NULL; eiPtr++) {
|
4358 |
if (eiPtr->type == patPtr->eventType) {
|
4359 |
Tcl_DStringAppend(dsPtr, eiPtr->name, -1);
|
4360 |
if (patPtr->detail.clientData != 0) {
|
4361 |
Tcl_DStringAppend(dsPtr, "-", 1);
|
4362 |
}
|
4363 |
break;
|
4364 |
}
|
4365 |
}
|
4366 |
|
4367 |
if (patPtr->detail.clientData != 0) {
|
4368 |
if ((patPtr->eventType == KeyPress)
|
4369 |
|| (patPtr->eventType == KeyRelease)) {
|
4370 |
char *string;
|
4371 |
|
4372 |
string = TkKeysymToString(patPtr->detail.keySym);
|
4373 |
if (string != NULL) {
|
4374 |
Tcl_DStringAppend(dsPtr, string, -1);
|
4375 |
}
|
4376 |
} else {
|
4377 |
sprintf(buffer, "%d", patPtr->detail.button);
|
4378 |
Tcl_DStringAppend(dsPtr, buffer, -1);
|
4379 |
}
|
4380 |
}
|
4381 |
Tcl_DStringAppend(dsPtr, ">", 1);
|
4382 |
}
|
4383 |
}
|
4384 |
|
4385 |
/*
|
4386 |
*---------------------------------------------------------------------------
|
4387 |
*
|
4388 |
* EvalTclBinding --
|
4389 |
*
|
4390 |
* The procedure that is invoked by Tk_BindEvent when a Tcl binding
|
4391 |
* is fired.
|
4392 |
*
|
4393 |
* Results:
|
4394 |
* A standard Tcl result code, the result of globally evaluating the
|
4395 |
* percent-substitued binding string.
|
4396 |
*
|
4397 |
* Side effects:
|
4398 |
* Normal side effects due to eval.
|
4399 |
*
|
4400 |
*---------------------------------------------------------------------------
|
4401 |
*/
|
4402 |
|
4403 |
static void
|
4404 |
FreeTclBinding(clientData)
|
4405 |
ClientData clientData;
|
4406 |
{
|
4407 |
ckfree((char *) clientData);
|
4408 |
}
|
4409 |
|
4410 |
/*
|
4411 |
*----------------------------------------------------------------------
|
4412 |
*
|
4413 |
* TkStringToKeysym --
|
4414 |
*
|
4415 |
* This procedure finds the keysym associated with a given keysym
|
4416 |
* name.
|
4417 |
*
|
4418 |
* Results:
|
4419 |
* The return value is the keysym that corresponds to name, or
|
4420 |
* NoSymbol if there is no such keysym.
|
4421 |
*
|
4422 |
* Side effects:
|
4423 |
* None.
|
4424 |
*
|
4425 |
*----------------------------------------------------------------------
|
4426 |
*/
|
4427 |
|
4428 |
KeySym
|
4429 |
TkStringToKeysym(name)
|
4430 |
char *name; /* Name of a keysym. */
|
4431 |
{
|
4432 |
#ifdef REDO_KEYSYM_LOOKUP
|
4433 |
Tcl_HashEntry *hPtr;
|
4434 |
KeySym keysym;
|
4435 |
|
4436 |
hPtr = Tcl_FindHashEntry(&keySymTable, name);
|
4437 |
if (hPtr != NULL) {
|
4438 |
return (KeySym) Tcl_GetHashValue(hPtr);
|
4439 |
}
|
4440 |
if (strlen(name) == 1) {
|
4441 |
keysym = (KeySym) (unsigned char) name[0];
|
4442 |
if (TkKeysymToString(keysym) != NULL) {
|
4443 |
return keysym;
|
4444 |
}
|
4445 |
}
|
4446 |
#endif /* REDO_KEYSYM_LOOKUP */
|
4447 |
return XStringToKeysym(name);
|
4448 |
}
|
4449 |
|
4450 |
/*
|
4451 |
*----------------------------------------------------------------------
|
4452 |
*
|
4453 |
* TkKeysymToString --
|
4454 |
*
|
4455 |
* This procedure finds the keysym name associated with a given
|
4456 |
* keysym.
|
4457 |
*
|
4458 |
* Results:
|
4459 |
* The return value is a pointer to a static string containing
|
4460 |
* the name of the given keysym, or NULL if there is no known name.
|
4461 |
*
|
4462 |
* Side effects:
|
4463 |
* None.
|
4464 |
*
|
4465 |
*----------------------------------------------------------------------
|
4466 |
*/
|
4467 |
|
4468 |
char *
|
4469 |
TkKeysymToString(keysym)
|
4470 |
KeySym keysym;
|
4471 |
{
|
4472 |
#ifdef REDO_KEYSYM_LOOKUP
|
4473 |
Tcl_HashEntry *hPtr;
|
4474 |
|
4475 |
hPtr = Tcl_FindHashEntry(&nameTable, (char *)keysym);
|
4476 |
if (hPtr != NULL) {
|
4477 |
return (char *) Tcl_GetHashValue(hPtr);
|
4478 |
}
|
4479 |
#endif /* REDO_KEYSYM_LOOKUP */
|
4480 |
return XKeysymToString(keysym);
|
4481 |
}
|
4482 |
|
4483 |
/*
|
4484 |
*----------------------------------------------------------------------
|
4485 |
*
|
4486 |
* TkCopyAndGlobalEval --
|
4487 |
*
|
4488 |
* This procedure makes a copy of a script then calls Tcl_GlobalEval
|
4489 |
* to evaluate it. It's used in situations where the execution of
|
4490 |
* a command may cause the original command string to be reallocated.
|
4491 |
*
|
4492 |
* Results:
|
4493 |
* Returns the result of evaluating script, including both a standard
|
4494 |
* Tcl completion code and a string in the interp's result.
|
4495 |
*
|
4496 |
* Side effects:
|
4497 |
* None.
|
4498 |
*
|
4499 |
*----------------------------------------------------------------------
|
4500 |
*/
|
4501 |
|
4502 |
int
|
4503 |
TkCopyAndGlobalEval(interp, script)
|
4504 |
Tcl_Interp *interp; /* Interpreter in which to evaluate
|
4505 |
* script. */
|
4506 |
char *script; /* Script to evaluate. */
|
4507 |
{
|
4508 |
Tcl_DString buffer;
|
4509 |
int code;
|
4510 |
|
4511 |
Tcl_DStringInit(&buffer);
|
4512 |
Tcl_DStringAppend(&buffer, script, -1);
|
4513 |
code = Tcl_GlobalEval(interp, Tcl_DStringValue(&buffer));
|
4514 |
Tcl_DStringFree(&buffer);
|
4515 |
return code;
|
4516 |
}
|
4517 |
|
4518 |
|
4519 |
/* $History: tkBind.c $
|
4520 |
*
|
4521 |
* ***************** Version 1 *****************
|
4522 |
* User: Dtashley Date: 1/02/01 Time: 2:38a
|
4523 |
* Created in $/IjuScripter, IjuConsole/Source/Tk Base
|
4524 |
* Initial check-in.
|
4525 |
*/
|
4526 |
|
4527 |
/* End of TKBIND.C */ |