1 |
/* $Header$ */
|
2 |
|
3 |
/*
|
4 |
* tkWinEmbed.c --
|
5 |
*
|
6 |
* This file contains platform specific procedures for Windows platforms
|
7 |
* to provide basic operations needed for application embedding (where
|
8 |
* one application can use as its main window an internal window from
|
9 |
* another application).
|
10 |
*
|
11 |
* Copyright (c) 1996-1997 Sun Microsystems, Inc.
|
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: tkwinembed.c,v 1.1.1.1 2001/06/13 05:13:10 dtashley Exp $
|
17 |
*/
|
18 |
|
19 |
#include "tkWinInt.h"
|
20 |
|
21 |
|
22 |
/*
|
23 |
* One of the following structures exists for each container in this
|
24 |
* application. It keeps track of the container window and its
|
25 |
* associated embedded window.
|
26 |
*/
|
27 |
|
28 |
typedef struct Container {
|
29 |
HWND parentHWnd; /* Windows HWND to the parent window */
|
30 |
TkWindow *parentPtr; /* Tk's information about the container
|
31 |
* or NULL if the container isn't
|
32 |
* in this process. */
|
33 |
HWND embeddedHWnd; /* Windows HWND to the embedded window
|
34 |
*/
|
35 |
TkWindow *embeddedPtr; /* Tk's information about the embedded
|
36 |
* window, or NULL if the
|
37 |
* embedded application isn't in
|
38 |
* this process. */
|
39 |
struct Container *nextPtr; /* Next in list of all containers in
|
40 |
* this process. */
|
41 |
} Container;
|
42 |
|
43 |
typedef struct ThreadSpecificData {
|
44 |
Container *firstContainerPtr; /* First in list of all containers
|
45 |
* managed by this process. */
|
46 |
} ThreadSpecificData;
|
47 |
static Tcl_ThreadDataKey dataKey;
|
48 |
|
49 |
static void CleanupContainerList _ANSI_ARGS_((
|
50 |
ClientData clientData));
|
51 |
static void ContainerEventProc _ANSI_ARGS_((ClientData clientData,
|
52 |
XEvent *eventPtr));
|
53 |
static void EmbeddedEventProc _ANSI_ARGS_((
|
54 |
ClientData clientData, XEvent *eventPtr));
|
55 |
static void EmbedGeometryRequest _ANSI_ARGS_((
|
56 |
Container*containerPtr, int width, int height));
|
57 |
static void EmbedWindowDeleted _ANSI_ARGS_((TkWindow *winPtr));
|
58 |
|
59 |
/*
|
60 |
*----------------------------------------------------------------------
|
61 |
*
|
62 |
* CleanupContainerList --
|
63 |
*
|
64 |
* Finalizes the list of containers.
|
65 |
*
|
66 |
* Results:
|
67 |
* None.
|
68 |
*
|
69 |
* Side effects:
|
70 |
* Releases memory occupied by containers of embedded windows.
|
71 |
*
|
72 |
*----------------------------------------------------------------------
|
73 |
*/
|
74 |
|
75 |
/* ARGSUSED */
|
76 |
static void
|
77 |
CleanupContainerList(clientData)
|
78 |
ClientData clientData;
|
79 |
{
|
80 |
Container *nextPtr;
|
81 |
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
|
82 |
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
83 |
|
84 |
for (;
|
85 |
tsdPtr->firstContainerPtr != (Container *) NULL;
|
86 |
tsdPtr->firstContainerPtr = nextPtr) {
|
87 |
nextPtr = tsdPtr->firstContainerPtr->nextPtr;
|
88 |
ckfree((char *) tsdPtr->firstContainerPtr);
|
89 |
}
|
90 |
tsdPtr->firstContainerPtr = (Container *) NULL;
|
91 |
}
|
92 |
|
93 |
/*
|
94 |
*----------------------------------------------------------------------
|
95 |
*
|
96 |
* TkpTestembedCmd --
|
97 |
*
|
98 |
* Test command for the embedding facility.
|
99 |
*
|
100 |
* Results:
|
101 |
* Always returns TCL_OK.
|
102 |
*
|
103 |
* Side effects:
|
104 |
* Currently it does not do anything.
|
105 |
*
|
106 |
*----------------------------------------------------------------------
|
107 |
*/
|
108 |
|
109 |
/* ARGSUSED */
|
110 |
int
|
111 |
TkpTestembedCmd(clientData, interp, argc, argv)
|
112 |
ClientData clientData;
|
113 |
Tcl_Interp *interp;
|
114 |
int argc;
|
115 |
char **argv;
|
116 |
{
|
117 |
return TCL_OK;
|
118 |
}
|
119 |
|
120 |
/*
|
121 |
*----------------------------------------------------------------------
|
122 |
*
|
123 |
* TkpUseWindow --
|
124 |
*
|
125 |
* This procedure causes a Tk window to use a given Windows handle
|
126 |
* for a window as its underlying window, rather than a new Windows
|
127 |
* window being created automatically. It is invoked by an embedded
|
128 |
* application to specify the window in which the application is
|
129 |
* embedded.
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130 |
*
|
131 |
* Results:
|
132 |
* The return value is normally TCL_OK. If an error occurred (such as
|
133 |
* if the argument does not identify a legal Windows window handle),
|
134 |
* the return value is TCL_ERROR and an error message is left in the
|
135 |
* the interp's result if interp is not NULL.
|
136 |
*
|
137 |
* Side effects:
|
138 |
* None.
|
139 |
*
|
140 |
*----------------------------------------------------------------------
|
141 |
*/
|
142 |
|
143 |
int
|
144 |
TkpUseWindow(interp, tkwin, string)
|
145 |
Tcl_Interp *interp; /* If not NULL, used for error reporting
|
146 |
* if string is bogus. */
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147 |
Tk_Window tkwin; /* Tk window that does not yet have an
|
148 |
* associated X window. */
|
149 |
char *string; /* String identifying an X window to use
|
150 |
* for tkwin; must be an integer value. */
|
151 |
{
|
152 |
TkWindow *winPtr = (TkWindow *) tkwin;
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153 |
int id;
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154 |
HWND hwnd;
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155 |
Container *containerPtr;
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156 |
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
|
157 |
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
158 |
|
159 |
if (winPtr->window != None) {
|
160 |
panic("TkpUseWindow: Already assigned a window");
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161 |
}
|
162 |
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163 |
if (Tcl_GetInt(interp, string, &id) != TCL_OK) {
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164 |
return TCL_ERROR;
|
165 |
}
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hwnd = (HWND) id;
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167 |
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168 |
/*
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169 |
* Check if the window is a valid handle. If it is invalid, return
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170 |
* TCL_ERROR and potentially leave an error message in the interp's
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* result.
|
172 |
*/
|
173 |
|
174 |
if (!IsWindow(hwnd)) {
|
175 |
if (interp != (Tcl_Interp *) NULL) {
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176 |
Tcl_AppendResult(interp, "window \"", string,
|
177 |
"\" doesn't exist", (char *) NULL);
|
178 |
}
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179 |
return TCL_ERROR;
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180 |
}
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181 |
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182 |
/*
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183 |
* Store the parent window in the platform private data slot so
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184 |
* TkWmMapWindow can use it when creating the wrapper window.
|
185 |
*/
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186 |
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187 |
winPtr->privatePtr = (struct TkWindowPrivate*) hwnd;
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188 |
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/*
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190 |
* Create an event handler to clean up the Container structure when
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191 |
* tkwin is eventually deleted.
|
192 |
*/
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193 |
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194 |
Tk_CreateEventHandler(tkwin, StructureNotifyMask, EmbeddedEventProc,
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195 |
(ClientData) winPtr);
|
196 |
|
197 |
/*
|
198 |
* If this is the first container, register an exit handler so that
|
199 |
* things will get cleaned up at finalization.
|
200 |
*/
|
201 |
|
202 |
if (tsdPtr->firstContainerPtr == (Container *) NULL) {
|
203 |
Tcl_CreateExitHandler(CleanupContainerList, (ClientData) NULL);
|
204 |
}
|
205 |
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206 |
/*
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207 |
* Save information about the container and the embedded window
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208 |
* in a Container structure. If there is already an existing
|
209 |
* Container structure, it means that both container and embedded
|
210 |
* app. are in the same process.
|
211 |
*/
|
212 |
|
213 |
for (containerPtr = tsdPtr->firstContainerPtr;
|
214 |
containerPtr != NULL; containerPtr = containerPtr->nextPtr) {
|
215 |
if (containerPtr->parentHWnd == hwnd) {
|
216 |
winPtr->flags |= TK_BOTH_HALVES;
|
217 |
containerPtr->parentPtr->flags |= TK_BOTH_HALVES;
|
218 |
break;
|
219 |
}
|
220 |
}
|
221 |
if (containerPtr == NULL) {
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222 |
containerPtr = (Container *) ckalloc(sizeof(Container));
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223 |
containerPtr->parentPtr = NULL;
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224 |
containerPtr->parentHWnd = hwnd;
|
225 |
containerPtr->nextPtr = tsdPtr->firstContainerPtr;
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226 |
tsdPtr->firstContainerPtr = containerPtr;
|
227 |
}
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228 |
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229 |
/*
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230 |
* embeddedHWnd is not created yet. It will be created by TkWmMapWindow(),
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231 |
* which will send a TK_ATTACHWINDOW to the container window.
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232 |
* TkWinEmbeddedEventProc will process this message and set the embeddedHWnd
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233 |
* variable
|
234 |
*/
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235 |
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236 |
containerPtr->embeddedPtr = winPtr;
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237 |
containerPtr->embeddedHWnd = NULL;
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238 |
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239 |
winPtr->flags |= TK_EMBEDDED;
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240 |
winPtr->flags &= (~(TK_MAPPED));
|
241 |
|
242 |
return TCL_OK;
|
243 |
}
|
244 |
|
245 |
/*
|
246 |
*----------------------------------------------------------------------
|
247 |
*
|
248 |
* TkpMakeContainer --
|
249 |
*
|
250 |
* This procedure is called to indicate that a particular window will
|
251 |
* be a container for an embedded application. This changes certain
|
252 |
* aspects of the window's behavior, such as whether it will receive
|
253 |
* events anymore.
|
254 |
*
|
255 |
* Results:
|
256 |
* None.
|
257 |
*
|
258 |
* Side effects:
|
259 |
* None.
|
260 |
*
|
261 |
*----------------------------------------------------------------------
|
262 |
*/
|
263 |
|
264 |
void
|
265 |
TkpMakeContainer(tkwin)
|
266 |
Tk_Window tkwin;
|
267 |
{
|
268 |
TkWindow *winPtr = (TkWindow *) tkwin;
|
269 |
Container *containerPtr;
|
270 |
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
|
271 |
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
272 |
|
273 |
/*
|
274 |
* If this is the first container, register an exit handler so that
|
275 |
* things will get cleaned up at finalization.
|
276 |
*/
|
277 |
|
278 |
if (tsdPtr->firstContainerPtr == (Container *) NULL) {
|
279 |
Tcl_CreateExitHandler(CleanupContainerList, (ClientData) NULL);
|
280 |
}
|
281 |
|
282 |
/*
|
283 |
* Register the window as a container so that, for example, we can
|
284 |
* find out later if the embedded app. is in the same process.
|
285 |
*/
|
286 |
|
287 |
Tk_MakeWindowExist(tkwin);
|
288 |
containerPtr = (Container *) ckalloc(sizeof(Container));
|
289 |
containerPtr->parentPtr = winPtr;
|
290 |
containerPtr->parentHWnd = Tk_GetHWND(Tk_WindowId(tkwin));
|
291 |
containerPtr->embeddedHWnd = NULL;
|
292 |
containerPtr->embeddedPtr = NULL;
|
293 |
containerPtr->nextPtr = tsdPtr->firstContainerPtr;
|
294 |
tsdPtr->firstContainerPtr = containerPtr;
|
295 |
winPtr->flags |= TK_CONTAINER;
|
296 |
|
297 |
/*
|
298 |
* Unlike in tkUnixEmbed.c, we don't make any requests for events
|
299 |
* in the embedded window here. Now we just allow the embedding
|
300 |
* of another TK application into TK windows. When the embedded
|
301 |
* window makes a request, that will be done by sending to the
|
302 |
* container window a WM_USER message, which will be intercepted
|
303 |
* by TkWinContainerProc.
|
304 |
*
|
305 |
* We need to get structure events of the container itself, though.
|
306 |
*/
|
307 |
|
308 |
Tk_CreateEventHandler(tkwin, StructureNotifyMask,
|
309 |
ContainerEventProc, (ClientData) containerPtr);
|
310 |
}
|
311 |
|
312 |
/*
|
313 |
*----------------------------------------------------------------------
|
314 |
*
|
315 |
* EmbeddedEventProc --
|
316 |
*
|
317 |
* This procedure is invoked by the Tk event dispatcher when various
|
318 |
* useful events are received for a window that is embedded in
|
319 |
* another application.
|
320 |
*
|
321 |
* Results:
|
322 |
* None.
|
323 |
*
|
324 |
* Side effects:
|
325 |
* Our internal state gets cleaned up when an embedded window is
|
326 |
* destroyed.
|
327 |
*
|
328 |
*----------------------------------------------------------------------
|
329 |
*/
|
330 |
|
331 |
static void
|
332 |
EmbeddedEventProc(clientData, eventPtr)
|
333 |
ClientData clientData; /* Token for container window. */
|
334 |
XEvent *eventPtr; /* ResizeRequest event. */
|
335 |
{
|
336 |
TkWindow *winPtr = (TkWindow *) clientData;
|
337 |
|
338 |
if (eventPtr->type == DestroyNotify) {
|
339 |
EmbedWindowDeleted(winPtr);
|
340 |
}
|
341 |
}
|
342 |
|
343 |
/*
|
344 |
*----------------------------------------------------------------------
|
345 |
*
|
346 |
* TkWinEmbeddedEventProc --
|
347 |
*
|
348 |
* This procedure is invoked by the Tk event dispatcher when
|
349 |
* various useful events are received for the *children* of a
|
350 |
* container window. It forwards relevant information, such as
|
351 |
* geometry requests, from the events into the container's
|
352 |
* application.
|
353 |
*
|
354 |
* Results:
|
355 |
* None.
|
356 |
*
|
357 |
* Side effects:
|
358 |
* Depends on the event. For example, when ConfigureRequest events
|
359 |
* occur, geometry information gets set for the container window.
|
360 |
*
|
361 |
*----------------------------------------------------------------------
|
362 |
*/
|
363 |
|
364 |
LRESULT
|
365 |
TkWinEmbeddedEventProc(hwnd, message, wParam, lParam)
|
366 |
HWND hwnd;
|
367 |
UINT message;
|
368 |
WPARAM wParam;
|
369 |
LPARAM lParam;
|
370 |
{
|
371 |
Container *containerPtr;
|
372 |
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
|
373 |
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
374 |
|
375 |
/*
|
376 |
* Find the Container structure associated with the parent window.
|
377 |
*/
|
378 |
|
379 |
for (containerPtr = tsdPtr->firstContainerPtr;
|
380 |
containerPtr->parentHWnd != hwnd;
|
381 |
containerPtr = containerPtr->nextPtr) {
|
382 |
if (containerPtr == NULL) {
|
383 |
panic("TkWinContainerProc couldn't find Container record");
|
384 |
}
|
385 |
}
|
386 |
|
387 |
switch (message) {
|
388 |
case TK_ATTACHWINDOW:
|
389 |
/* An embedded window (either from this application or from
|
390 |
* another application) is trying to attach to this container.
|
391 |
* We attach it only if this container is not yet containing any
|
392 |
* window.
|
393 |
*/
|
394 |
if (containerPtr->embeddedHWnd == NULL) {
|
395 |
containerPtr->embeddedHWnd = (HWND)wParam;
|
396 |
} else {
|
397 |
return 0;
|
398 |
}
|
399 |
|
400 |
break;
|
401 |
case TK_GEOMETRYREQ:
|
402 |
EmbedGeometryRequest(containerPtr, wParam, lParam);
|
403 |
break;
|
404 |
}
|
405 |
return 1;
|
406 |
}
|
407 |
|
408 |
/*
|
409 |
*----------------------------------------------------------------------
|
410 |
*
|
411 |
* EmbedGeometryRequest --
|
412 |
*
|
413 |
* This procedure is invoked when an embedded application requests
|
414 |
* a particular size. It processes the request (which may or may
|
415 |
* not actually resize the window) and reflects the results back
|
416 |
* to the embedded application.
|
417 |
*
|
418 |
* Results:
|
419 |
* None.
|
420 |
*
|
421 |
* Side effects:
|
422 |
* If we deny the child's size change request, a Configure event
|
423 |
* is synthesized to let the child know that the size is the same
|
424 |
* as it used to be. Events get processed while we're waiting for
|
425 |
* the geometry managers to do their thing.
|
426 |
*
|
427 |
*----------------------------------------------------------------------
|
428 |
*/
|
429 |
|
430 |
void
|
431 |
EmbedGeometryRequest(containerPtr, width, height)
|
432 |
Container *containerPtr; /* Information about the container window. */
|
433 |
int width, height; /* Size that the child has requested. */
|
434 |
{
|
435 |
TkWindow * winPtr = containerPtr->parentPtr;
|
436 |
|
437 |
/*
|
438 |
* Forward the requested size into our geometry management hierarchy
|
439 |
* via the container window. We need to send a Configure event back
|
440 |
* to the embedded application even if we decide not to resize
|
441 |
* the window; to make this happen, process all idle event handlers
|
442 |
* synchronously here (so that the geometry managers have had a
|
443 |
* chance to do whatever they want to do), and if the window's size
|
444 |
* didn't change then generate a configure event.
|
445 |
*/
|
446 |
Tk_GeometryRequest((Tk_Window)winPtr, width, height);
|
447 |
|
448 |
if (containerPtr->embeddedHWnd != NULL) {
|
449 |
while (Tcl_DoOneEvent(TCL_IDLE_EVENTS)) {
|
450 |
/* Empty loop body. */
|
451 |
}
|
452 |
|
453 |
SetWindowPos(containerPtr->embeddedHWnd, NULL,
|
454 |
0, 0, winPtr->changes.width, winPtr->changes.height, SWP_NOZORDER);
|
455 |
}
|
456 |
}
|
457 |
|
458 |
/*
|
459 |
*----------------------------------------------------------------------
|
460 |
*
|
461 |
* ContainerEventProc --
|
462 |
*
|
463 |
* This procedure is invoked by the Tk event dispatcher when
|
464 |
* various useful events are received for the container window.
|
465 |
*
|
466 |
* Results:
|
467 |
* None.
|
468 |
*
|
469 |
* Side effects:
|
470 |
* Depends on the event. For example, when ConfigureRequest events
|
471 |
* occur, geometry information gets set for the container window.
|
472 |
*
|
473 |
*----------------------------------------------------------------------
|
474 |
*/
|
475 |
|
476 |
static void
|
477 |
ContainerEventProc(clientData, eventPtr)
|
478 |
ClientData clientData; /* Token for container window. */
|
479 |
XEvent *eventPtr; /* ResizeRequest event. */
|
480 |
{
|
481 |
Container *containerPtr = (Container *)clientData;
|
482 |
Tk_Window tkwin = (Tk_Window)containerPtr->parentPtr;
|
483 |
|
484 |
if (eventPtr->type == ConfigureNotify) {
|
485 |
if (containerPtr->embeddedPtr == NULL) {
|
486 |
return;
|
487 |
}
|
488 |
/* Resize the embedded window, if there is any */
|
489 |
if (containerPtr->embeddedHWnd) {
|
490 |
SetWindowPos(containerPtr->embeddedHWnd, NULL,
|
491 |
0, 0, Tk_Width(tkwin), Tk_Height(tkwin), SWP_NOZORDER);
|
492 |
}
|
493 |
} else if (eventPtr->type == DestroyNotify) {
|
494 |
/* The container is gone, remove it from the list */
|
495 |
EmbedWindowDeleted(containerPtr->parentPtr);
|
496 |
}
|
497 |
}
|
498 |
|
499 |
/*
|
500 |
*----------------------------------------------------------------------
|
501 |
*
|
502 |
* TkpGetOtherWindow --
|
503 |
*
|
504 |
* If both the container and embedded window are in the same
|
505 |
* process, this procedure will return either one, given the other.
|
506 |
*
|
507 |
* Results:
|
508 |
* If winPtr is a container, the return value is the token for the
|
509 |
* embedded window, and vice versa. If the "other" window isn't in
|
510 |
* this process, NULL is returned.
|
511 |
*
|
512 |
* Side effects:
|
513 |
* None.
|
514 |
*
|
515 |
*----------------------------------------------------------------------
|
516 |
*/
|
517 |
|
518 |
TkWindow *
|
519 |
TkpGetOtherWindow(winPtr)
|
520 |
TkWindow *winPtr; /* Tk's structure for a container or
|
521 |
* embedded window. */
|
522 |
{
|
523 |
Container *containerPtr;
|
524 |
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
|
525 |
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
526 |
|
527 |
for (containerPtr = tsdPtr->firstContainerPtr; containerPtr != NULL;
|
528 |
containerPtr = containerPtr->nextPtr) {
|
529 |
if (containerPtr->embeddedPtr == winPtr) {
|
530 |
return containerPtr->parentPtr;
|
531 |
} else if (containerPtr->parentPtr == winPtr) {
|
532 |
return containerPtr->embeddedPtr;
|
533 |
}
|
534 |
}
|
535 |
panic("TkpGetOtherWindow couldn't find window");
|
536 |
return NULL;
|
537 |
}
|
538 |
|
539 |
/*
|
540 |
*----------------------------------------------------------------------
|
541 |
*
|
542 |
* TkpClaimFocus --
|
543 |
*
|
544 |
* This procedure is invoked when someone asks or the input focus
|
545 |
* to be put on a window in an embedded application, but the
|
546 |
* application doesn't currently have the focus. It requests the
|
547 |
* input focus from the container application.
|
548 |
*
|
549 |
* Results:
|
550 |
* None.
|
551 |
*
|
552 |
* Side effects:
|
553 |
* The input focus may change.
|
554 |
*
|
555 |
*----------------------------------------------------------------------
|
556 |
*/
|
557 |
|
558 |
void
|
559 |
TkpClaimFocus(topLevelPtr, force)
|
560 |
TkWindow *topLevelPtr; /* Top-level window containing desired
|
561 |
* focus window; should be embedded. */
|
562 |
int force; /* One means that the container should
|
563 |
* claim the focus if it doesn't
|
564 |
* currently have it. */
|
565 |
{
|
566 |
HWND hwnd = GetParent(Tk_GetHWND(topLevelPtr->window));
|
567 |
SendMessage(hwnd, TK_CLAIMFOCUS, (WPARAM) force, 0);
|
568 |
}
|
569 |
|
570 |
/*
|
571 |
*----------------------------------------------------------------------
|
572 |
*
|
573 |
* TkpRedirectKeyEvent --
|
574 |
*
|
575 |
* This procedure is invoked when a key press or release event
|
576 |
* arrives for an application that does not believe it owns the
|
577 |
* input focus. This can happen because of embedding; for example,
|
578 |
* X can send an event to an embedded application when the real
|
579 |
* focus window is in the container application and is an ancestor
|
580 |
* of the container. This procedure's job is to forward the event
|
581 |
* back to the application where it really belongs.
|
582 |
*
|
583 |
* Results:
|
584 |
* None.
|
585 |
*
|
586 |
* Side effects:
|
587 |
* The event may get sent to a different application.
|
588 |
*
|
589 |
*----------------------------------------------------------------------
|
590 |
*/
|
591 |
|
592 |
void
|
593 |
TkpRedirectKeyEvent(winPtr, eventPtr)
|
594 |
TkWindow *winPtr; /* Window to which the event was originally
|
595 |
* reported. */
|
596 |
XEvent *eventPtr; /* X event to redirect (should be KeyPress
|
597 |
* or KeyRelease). */
|
598 |
{
|
599 |
/* not implemented */
|
600 |
}
|
601 |
|
602 |
/*
|
603 |
*----------------------------------------------------------------------
|
604 |
*
|
605 |
* EmbedWindowDeleted --
|
606 |
*
|
607 |
* This procedure is invoked when a window involved in embedding
|
608 |
* (as either the container or the embedded application) is
|
609 |
* destroyed. It cleans up the Container structure for the window.
|
610 |
*
|
611 |
* Results:
|
612 |
* None.
|
613 |
*
|
614 |
* Side effects:
|
615 |
* A Container structure may be freed.
|
616 |
*
|
617 |
*----------------------------------------------------------------------
|
618 |
*/
|
619 |
|
620 |
static void
|
621 |
EmbedWindowDeleted(winPtr)
|
622 |
TkWindow *winPtr; /* Tk's information about window that
|
623 |
* was deleted. */
|
624 |
{
|
625 |
Container *containerPtr, *prevPtr;
|
626 |
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
|
627 |
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
628 |
|
629 |
/*
|
630 |
* Find the Container structure for this window work. Delete the
|
631 |
* information about the embedded application and free the container's
|
632 |
* record.
|
633 |
*/
|
634 |
|
635 |
prevPtr = NULL;
|
636 |
containerPtr = tsdPtr->firstContainerPtr;
|
637 |
while (1) {
|
638 |
if (containerPtr->embeddedPtr == winPtr) {
|
639 |
containerPtr->embeddedHWnd = NULL;
|
640 |
containerPtr->embeddedPtr = NULL;
|
641 |
break;
|
642 |
}
|
643 |
if (containerPtr->parentPtr == winPtr) {
|
644 |
containerPtr->parentPtr = NULL;
|
645 |
break;
|
646 |
}
|
647 |
prevPtr = containerPtr;
|
648 |
containerPtr = containerPtr->nextPtr;
|
649 |
if (containerPtr == NULL) {
|
650 |
panic("EmbedWindowDeleted couldn't find window");
|
651 |
}
|
652 |
}
|
653 |
if ((containerPtr->embeddedPtr == NULL)
|
654 |
&& (containerPtr->parentPtr == NULL)) {
|
655 |
if (prevPtr == NULL) {
|
656 |
tsdPtr->firstContainerPtr = containerPtr->nextPtr;
|
657 |
} else {
|
658 |
prevPtr->nextPtr = containerPtr->nextPtr;
|
659 |
}
|
660 |
ckfree((char *) containerPtr);
|
661 |
}
|
662 |
}
|
663 |
|
664 |
/* End of tkwinembed.c */
|