1 |
/* $Header$ */ |
/* $Header$ */ |
2 |
|
|
3 |
/* |
/* |
4 |
* tkClipboard.c -- |
* tkClipboard.c -- |
5 |
* |
* |
6 |
* This file manages the clipboard for the Tk toolkit, |
* This file manages the clipboard for the Tk toolkit, |
7 |
* maintaining a collection of data buffers that will be |
* maintaining a collection of data buffers that will be |
8 |
* supplied on demand to requesting applications. |
* supplied on demand to requesting applications. |
9 |
* |
* |
10 |
* Copyright (c) 1994 The Regents of the University of California. |
* Copyright (c) 1994 The Regents of the University of California. |
11 |
* Copyright (c) 1994-1997 Sun Microsystems, Inc. |
* Copyright (c) 1994-1997 Sun Microsystems, Inc. |
12 |
* |
* |
13 |
* See the file "license.terms" for information on usage and redistribution |
* See the file "license.terms" for information on usage and redistribution |
14 |
* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
15 |
* |
* |
16 |
* RCS: @(#) $Id: tkclipboard.c,v 1.1.1.1 2001/06/13 04:58:07 dtashley Exp $ |
* RCS: @(#) $Id: tkclipboard.c,v 1.1.1.1 2001/06/13 04:58:07 dtashley Exp $ |
17 |
*/ |
*/ |
18 |
|
|
19 |
#include "tkInt.h" |
#include "tkInt.h" |
20 |
#include "tkPort.h" |
#include "tkPort.h" |
21 |
#include "tkSelect.h" |
#include "tkSelect.h" |
22 |
|
|
23 |
/* |
/* |
24 |
* Prototypes for procedures used only in this file: |
* Prototypes for procedures used only in this file: |
25 |
*/ |
*/ |
26 |
|
|
27 |
static int ClipboardAppHandler _ANSI_ARGS_((ClientData clientData, |
static int ClipboardAppHandler _ANSI_ARGS_((ClientData clientData, |
28 |
int offset, char *buffer, int maxBytes)); |
int offset, char *buffer, int maxBytes)); |
29 |
static int ClipboardHandler _ANSI_ARGS_((ClientData clientData, |
static int ClipboardHandler _ANSI_ARGS_((ClientData clientData, |
30 |
int offset, char *buffer, int maxBytes)); |
int offset, char *buffer, int maxBytes)); |
31 |
static int ClipboardWindowHandler _ANSI_ARGS_(( |
static int ClipboardWindowHandler _ANSI_ARGS_(( |
32 |
ClientData clientData, int offset, char *buffer, |
ClientData clientData, int offset, char *buffer, |
33 |
int maxBytes)); |
int maxBytes)); |
34 |
static void ClipboardLostSel _ANSI_ARGS_((ClientData clientData)); |
static void ClipboardLostSel _ANSI_ARGS_((ClientData clientData)); |
35 |
|
|
36 |
/* |
/* |
37 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
38 |
* |
* |
39 |
* ClipboardHandler -- |
* ClipboardHandler -- |
40 |
* |
* |
41 |
* This procedure acts as selection handler for the |
* This procedure acts as selection handler for the |
42 |
* clipboard manager. It extracts the required chunk of |
* clipboard manager. It extracts the required chunk of |
43 |
* data from the buffer chain for a given selection target. |
* data from the buffer chain for a given selection target. |
44 |
* |
* |
45 |
* Results: |
* Results: |
46 |
* The return value is a count of the number of bytes |
* The return value is a count of the number of bytes |
47 |
* actually stored at buffer. |
* actually stored at buffer. |
48 |
* |
* |
49 |
* Side effects: |
* Side effects: |
50 |
* None. |
* None. |
51 |
* |
* |
52 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
53 |
*/ |
*/ |
54 |
|
|
55 |
static int |
static int |
56 |
ClipboardHandler(clientData, offset, buffer, maxBytes) |
ClipboardHandler(clientData, offset, buffer, maxBytes) |
57 |
ClientData clientData; /* Information about data to fetch. */ |
ClientData clientData; /* Information about data to fetch. */ |
58 |
int offset; /* Return selection bytes starting at this |
int offset; /* Return selection bytes starting at this |
59 |
* offset. */ |
* offset. */ |
60 |
char *buffer; /* Place to store converted selection. */ |
char *buffer; /* Place to store converted selection. */ |
61 |
int maxBytes; /* Maximum # of bytes to store at buffer. */ |
int maxBytes; /* Maximum # of bytes to store at buffer. */ |
62 |
{ |
{ |
63 |
TkClipboardTarget *targetPtr = (TkClipboardTarget*) clientData; |
TkClipboardTarget *targetPtr = (TkClipboardTarget*) clientData; |
64 |
TkClipboardBuffer *cbPtr; |
TkClipboardBuffer *cbPtr; |
65 |
char *srcPtr, *destPtr; |
char *srcPtr, *destPtr; |
66 |
int count = 0; |
int count = 0; |
67 |
int scanned = 0; |
int scanned = 0; |
68 |
size_t length, freeCount; |
size_t length, freeCount; |
69 |
|
|
70 |
/* |
/* |
71 |
* Skip to buffer containing offset byte |
* Skip to buffer containing offset byte |
72 |
*/ |
*/ |
73 |
|
|
74 |
for (cbPtr = targetPtr->firstBufferPtr; ; cbPtr = cbPtr->nextPtr) { |
for (cbPtr = targetPtr->firstBufferPtr; ; cbPtr = cbPtr->nextPtr) { |
75 |
if (cbPtr == NULL) { |
if (cbPtr == NULL) { |
76 |
return 0; |
return 0; |
77 |
} |
} |
78 |
if (scanned + cbPtr->length > offset) { |
if (scanned + cbPtr->length > offset) { |
79 |
break; |
break; |
80 |
} |
} |
81 |
scanned += cbPtr->length; |
scanned += cbPtr->length; |
82 |
} |
} |
83 |
|
|
84 |
/* |
/* |
85 |
* Copy up to maxBytes or end of list, switching buffers as needed. |
* Copy up to maxBytes or end of list, switching buffers as needed. |
86 |
*/ |
*/ |
87 |
|
|
88 |
freeCount = maxBytes; |
freeCount = maxBytes; |
89 |
srcPtr = cbPtr->buffer + (offset - scanned); |
srcPtr = cbPtr->buffer + (offset - scanned); |
90 |
destPtr = buffer; |
destPtr = buffer; |
91 |
length = cbPtr->length - (offset - scanned); |
length = cbPtr->length - (offset - scanned); |
92 |
while (1) { |
while (1) { |
93 |
if (length > freeCount) { |
if (length > freeCount) { |
94 |
strncpy(destPtr, srcPtr, freeCount); |
strncpy(destPtr, srcPtr, freeCount); |
95 |
return maxBytes; |
return maxBytes; |
96 |
} else { |
} else { |
97 |
strncpy(destPtr, srcPtr, length); |
strncpy(destPtr, srcPtr, length); |
98 |
destPtr += length; |
destPtr += length; |
99 |
count += length; |
count += length; |
100 |
freeCount -= length; |
freeCount -= length; |
101 |
} |
} |
102 |
cbPtr = cbPtr->nextPtr; |
cbPtr = cbPtr->nextPtr; |
103 |
if (cbPtr == NULL) { |
if (cbPtr == NULL) { |
104 |
break; |
break; |
105 |
} |
} |
106 |
srcPtr = cbPtr->buffer; |
srcPtr = cbPtr->buffer; |
107 |
length = cbPtr->length; |
length = cbPtr->length; |
108 |
} |
} |
109 |
return count; |
return count; |
110 |
} |
} |
111 |
|
|
112 |
/* |
/* |
113 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
114 |
* |
* |
115 |
* ClipboardAppHandler -- |
* ClipboardAppHandler -- |
116 |
* |
* |
117 |
* This procedure acts as selection handler for retrievals of type |
* This procedure acts as selection handler for retrievals of type |
118 |
* TK_APPLICATION. It returns the name of the application that |
* TK_APPLICATION. It returns the name of the application that |
119 |
* owns the clipboard. Note: we can't use the default Tk |
* owns the clipboard. Note: we can't use the default Tk |
120 |
* selection handler for this selection type, because the clipboard |
* selection handler for this selection type, because the clipboard |
121 |
* window isn't a "real" window and doesn't have the necessary |
* window isn't a "real" window and doesn't have the necessary |
122 |
* information. |
* information. |
123 |
* |
* |
124 |
* Results: |
* Results: |
125 |
* The return value is a count of the number of bytes |
* The return value is a count of the number of bytes |
126 |
* actually stored at buffer. |
* actually stored at buffer. |
127 |
* |
* |
128 |
* Side effects: |
* Side effects: |
129 |
* None. |
* None. |
130 |
* |
* |
131 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
132 |
*/ |
*/ |
133 |
|
|
134 |
static int |
static int |
135 |
ClipboardAppHandler(clientData, offset, buffer, maxBytes) |
ClipboardAppHandler(clientData, offset, buffer, maxBytes) |
136 |
ClientData clientData; /* Pointer to TkDisplay structure. */ |
ClientData clientData; /* Pointer to TkDisplay structure. */ |
137 |
int offset; /* Return selection bytes starting at this |
int offset; /* Return selection bytes starting at this |
138 |
* offset. */ |
* offset. */ |
139 |
char *buffer; /* Place to store converted selection. */ |
char *buffer; /* Place to store converted selection. */ |
140 |
int maxBytes; /* Maximum # of bytes to store at buffer. */ |
int maxBytes; /* Maximum # of bytes to store at buffer. */ |
141 |
{ |
{ |
142 |
TkDisplay *dispPtr = (TkDisplay *) clientData; |
TkDisplay *dispPtr = (TkDisplay *) clientData; |
143 |
size_t length; |
size_t length; |
144 |
char *p; |
char *p; |
145 |
|
|
146 |
p = dispPtr->clipboardAppPtr->winPtr->nameUid; |
p = dispPtr->clipboardAppPtr->winPtr->nameUid; |
147 |
length = strlen(p); |
length = strlen(p); |
148 |
length -= offset; |
length -= offset; |
149 |
if (length <= 0) { |
if (length <= 0) { |
150 |
return 0; |
return 0; |
151 |
} |
} |
152 |
if (length > (size_t) maxBytes) { |
if (length > (size_t) maxBytes) { |
153 |
length = maxBytes; |
length = maxBytes; |
154 |
} |
} |
155 |
strncpy(buffer, p, length); |
strncpy(buffer, p, length); |
156 |
return length; |
return length; |
157 |
} |
} |
158 |
|
|
159 |
/* |
/* |
160 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
161 |
* |
* |
162 |
* ClipboardWindowHandler -- |
* ClipboardWindowHandler -- |
163 |
* |
* |
164 |
* This procedure acts as selection handler for retrievals of |
* This procedure acts as selection handler for retrievals of |
165 |
* type TK_WINDOW. Since the clipboard doesn't correspond to |
* type TK_WINDOW. Since the clipboard doesn't correspond to |
166 |
* any particular window, we just return ".". We can't use Tk's |
* any particular window, we just return ".". We can't use Tk's |
167 |
* default handler for this selection type, because the clipboard |
* default handler for this selection type, because the clipboard |
168 |
* window isn't a valid window. |
* window isn't a valid window. |
169 |
* |
* |
170 |
* Results: |
* Results: |
171 |
* The return value is 1, the number of non-null bytes stored |
* The return value is 1, the number of non-null bytes stored |
172 |
* at buffer. |
* at buffer. |
173 |
* |
* |
174 |
* Side effects: |
* Side effects: |
175 |
* None. |
* None. |
176 |
* |
* |
177 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
178 |
*/ |
*/ |
179 |
|
|
180 |
static int |
static int |
181 |
ClipboardWindowHandler(clientData, offset, buffer, maxBytes) |
ClipboardWindowHandler(clientData, offset, buffer, maxBytes) |
182 |
ClientData clientData; /* Not used. */ |
ClientData clientData; /* Not used. */ |
183 |
int offset; /* Return selection bytes starting at this |
int offset; /* Return selection bytes starting at this |
184 |
* offset. */ |
* offset. */ |
185 |
char *buffer; /* Place to store converted selection. */ |
char *buffer; /* Place to store converted selection. */ |
186 |
int maxBytes; /* Maximum # of bytes to store at buffer. */ |
int maxBytes; /* Maximum # of bytes to store at buffer. */ |
187 |
{ |
{ |
188 |
buffer[0] = '.'; |
buffer[0] = '.'; |
189 |
buffer[1] = 0; |
buffer[1] = 0; |
190 |
return 1; |
return 1; |
191 |
} |
} |
192 |
|
|
193 |
/* |
/* |
194 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
195 |
* |
* |
196 |
* ClipboardLostSel -- |
* ClipboardLostSel -- |
197 |
* |
* |
198 |
* This procedure is invoked whenever clipboard ownership is |
* This procedure is invoked whenever clipboard ownership is |
199 |
* claimed by another window. It just sets a flag so that we |
* claimed by another window. It just sets a flag so that we |
200 |
* know the clipboard was taken away. |
* know the clipboard was taken away. |
201 |
* |
* |
202 |
* Results: |
* Results: |
203 |
* None. |
* None. |
204 |
* |
* |
205 |
* Side effects: |
* Side effects: |
206 |
* The clipboard is marked as inactive. |
* The clipboard is marked as inactive. |
207 |
* |
* |
208 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
209 |
*/ |
*/ |
210 |
|
|
211 |
static void |
static void |
212 |
ClipboardLostSel(clientData) |
ClipboardLostSel(clientData) |
213 |
ClientData clientData; /* Pointer to TkDisplay structure. */ |
ClientData clientData; /* Pointer to TkDisplay structure. */ |
214 |
{ |
{ |
215 |
TkDisplay *dispPtr = (TkDisplay*) clientData; |
TkDisplay *dispPtr = (TkDisplay*) clientData; |
216 |
|
|
217 |
dispPtr->clipboardActive = 0; |
dispPtr->clipboardActive = 0; |
218 |
} |
} |
219 |
|
|
220 |
/* |
/* |
221 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
222 |
* |
* |
223 |
* Tk_ClipboardClear -- |
* Tk_ClipboardClear -- |
224 |
* |
* |
225 |
* Take control of the clipboard and clear out the previous |
* Take control of the clipboard and clear out the previous |
226 |
* contents. This procedure must be invoked before any |
* contents. This procedure must be invoked before any |
227 |
* calls to Tk_ClipboardAppend. |
* calls to Tk_ClipboardAppend. |
228 |
* |
* |
229 |
* Results: |
* Results: |
230 |
* A standard Tcl result. If an error occurs, an error message is |
* A standard Tcl result. If an error occurs, an error message is |
231 |
* left in the interp's result. |
* left in the interp's result. |
232 |
* |
* |
233 |
* Side effects: |
* Side effects: |
234 |
* From now on, requests for the CLIPBOARD selection will be |
* From now on, requests for the CLIPBOARD selection will be |
235 |
* directed to the clipboard manager routines associated with |
* directed to the clipboard manager routines associated with |
236 |
* clipWindow for the display of tkwin. In order to guarantee |
* clipWindow for the display of tkwin. In order to guarantee |
237 |
* atomicity, no event handling should occur between |
* atomicity, no event handling should occur between |
238 |
* Tk_ClipboardClear and the following Tk_ClipboardAppend |
* Tk_ClipboardClear and the following Tk_ClipboardAppend |
239 |
* calls. This procedure may cause a user-defined LostSel command |
* calls. This procedure may cause a user-defined LostSel command |
240 |
* to be invoked when the CLIPBOARD is claimed, so any calling |
* to be invoked when the CLIPBOARD is claimed, so any calling |
241 |
* function should be reentrant at the point Tk_ClipboardClear is |
* function should be reentrant at the point Tk_ClipboardClear is |
242 |
* invoked. |
* invoked. |
243 |
* |
* |
244 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
245 |
*/ |
*/ |
246 |
|
|
247 |
int |
int |
248 |
Tk_ClipboardClear(interp, tkwin) |
Tk_ClipboardClear(interp, tkwin) |
249 |
Tcl_Interp *interp; /* Interpreter to use for error reporting. */ |
Tcl_Interp *interp; /* Interpreter to use for error reporting. */ |
250 |
Tk_Window tkwin; /* Window in application that is clearing |
Tk_Window tkwin; /* Window in application that is clearing |
251 |
* clipboard; identifies application and |
* clipboard; identifies application and |
252 |
* display. */ |
* display. */ |
253 |
{ |
{ |
254 |
TkWindow *winPtr = (TkWindow *) tkwin; |
TkWindow *winPtr = (TkWindow *) tkwin; |
255 |
TkDisplay *dispPtr = winPtr->dispPtr; |
TkDisplay *dispPtr = winPtr->dispPtr; |
256 |
TkClipboardTarget *targetPtr, *nextTargetPtr; |
TkClipboardTarget *targetPtr, *nextTargetPtr; |
257 |
TkClipboardBuffer *cbPtr, *nextCbPtr; |
TkClipboardBuffer *cbPtr, *nextCbPtr; |
258 |
|
|
259 |
if (dispPtr->clipWindow == NULL) { |
if (dispPtr->clipWindow == NULL) { |
260 |
int result; |
int result; |
261 |
|
|
262 |
result = TkClipInit(interp, dispPtr); |
result = TkClipInit(interp, dispPtr); |
263 |
if (result != TCL_OK) { |
if (result != TCL_OK) { |
264 |
return result; |
return result; |
265 |
} |
} |
266 |
} |
} |
267 |
|
|
268 |
/* |
/* |
269 |
* Discard any existing clipboard data and delete the selection |
* Discard any existing clipboard data and delete the selection |
270 |
* handler(s) associated with that data. |
* handler(s) associated with that data. |
271 |
*/ |
*/ |
272 |
|
|
273 |
for (targetPtr = dispPtr->clipTargetPtr; targetPtr != NULL; |
for (targetPtr = dispPtr->clipTargetPtr; targetPtr != NULL; |
274 |
targetPtr = nextTargetPtr) { |
targetPtr = nextTargetPtr) { |
275 |
for (cbPtr = targetPtr->firstBufferPtr; cbPtr != NULL; |
for (cbPtr = targetPtr->firstBufferPtr; cbPtr != NULL; |
276 |
cbPtr = nextCbPtr) { |
cbPtr = nextCbPtr) { |
277 |
ckfree(cbPtr->buffer); |
ckfree(cbPtr->buffer); |
278 |
nextCbPtr = cbPtr->nextPtr; |
nextCbPtr = cbPtr->nextPtr; |
279 |
ckfree((char *) cbPtr); |
ckfree((char *) cbPtr); |
280 |
} |
} |
281 |
nextTargetPtr = targetPtr->nextPtr; |
nextTargetPtr = targetPtr->nextPtr; |
282 |
Tk_DeleteSelHandler(dispPtr->clipWindow, dispPtr->clipboardAtom, |
Tk_DeleteSelHandler(dispPtr->clipWindow, dispPtr->clipboardAtom, |
283 |
targetPtr->type); |
targetPtr->type); |
284 |
ckfree((char *) targetPtr); |
ckfree((char *) targetPtr); |
285 |
} |
} |
286 |
dispPtr->clipTargetPtr = NULL; |
dispPtr->clipTargetPtr = NULL; |
287 |
|
|
288 |
/* |
/* |
289 |
* Reclaim the clipboard selection if we lost it. |
* Reclaim the clipboard selection if we lost it. |
290 |
*/ |
*/ |
291 |
|
|
292 |
if (!dispPtr->clipboardActive) { |
if (!dispPtr->clipboardActive) { |
293 |
Tk_OwnSelection(dispPtr->clipWindow, dispPtr->clipboardAtom, |
Tk_OwnSelection(dispPtr->clipWindow, dispPtr->clipboardAtom, |
294 |
ClipboardLostSel, (ClientData) dispPtr); |
ClipboardLostSel, (ClientData) dispPtr); |
295 |
dispPtr->clipboardActive = 1; |
dispPtr->clipboardActive = 1; |
296 |
} |
} |
297 |
dispPtr->clipboardAppPtr = winPtr->mainPtr; |
dispPtr->clipboardAppPtr = winPtr->mainPtr; |
298 |
return TCL_OK; |
return TCL_OK; |
299 |
} |
} |
300 |
|
|
301 |
/* |
/* |
302 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
303 |
* |
* |
304 |
* Tk_ClipboardAppend -- |
* Tk_ClipboardAppend -- |
305 |
* |
* |
306 |
* Append a buffer of data to the clipboard. The first buffer of |
* Append a buffer of data to the clipboard. The first buffer of |
307 |
* a given type determines the format for that type. Any successive |
* a given type determines the format for that type. Any successive |
308 |
* appends to that type must have the same format or an error will |
* appends to that type must have the same format or an error will |
309 |
* be returned. Tk_ClipboardClear must be called before a sequence |
* be returned. Tk_ClipboardClear must be called before a sequence |
310 |
* of Tk_ClipboardAppend calls can be issued. In order to guarantee |
* of Tk_ClipboardAppend calls can be issued. In order to guarantee |
311 |
* atomicity, no event handling should occur between Tk_ClipboardClear |
* atomicity, no event handling should occur between Tk_ClipboardClear |
312 |
* and the following Tk_ClipboardAppend calls. |
* and the following Tk_ClipboardAppend calls. |
313 |
* |
* |
314 |
* Results: |
* Results: |
315 |
* A standard Tcl result. If an error is returned, an error message |
* A standard Tcl result. If an error is returned, an error message |
316 |
* is left in the interp's result. |
* is left in the interp's result. |
317 |
* |
* |
318 |
* Side effects: |
* Side effects: |
319 |
* The specified buffer will be copied onto the end of the clipboard. |
* The specified buffer will be copied onto the end of the clipboard. |
320 |
* The clipboard maintains a list of buffers which will be used to |
* The clipboard maintains a list of buffers which will be used to |
321 |
* supply the data for a selection get request. The first time a given |
* supply the data for a selection get request. The first time a given |
322 |
* type is appended, Tk_ClipboardAppend will register a selection |
* type is appended, Tk_ClipboardAppend will register a selection |
323 |
* handler of the appropriate type. |
* handler of the appropriate type. |
324 |
* |
* |
325 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
326 |
*/ |
*/ |
327 |
|
|
328 |
int |
int |
329 |
Tk_ClipboardAppend(interp, tkwin, type, format, buffer) |
Tk_ClipboardAppend(interp, tkwin, type, format, buffer) |
330 |
Tcl_Interp *interp; /* Used for error reporting. */ |
Tcl_Interp *interp; /* Used for error reporting. */ |
331 |
Tk_Window tkwin; /* Window that selects a display. */ |
Tk_Window tkwin; /* Window that selects a display. */ |
332 |
Atom type; /* The desired conversion type for this |
Atom type; /* The desired conversion type for this |
333 |
* clipboard item, e.g. STRING or LENGTH. */ |
* clipboard item, e.g. STRING or LENGTH. */ |
334 |
Atom format; /* Format in which the selection |
Atom format; /* Format in which the selection |
335 |
* information should be returned to |
* information should be returned to |
336 |
* the requestor. */ |
* the requestor. */ |
337 |
char* buffer; /* NULL terminated string containing the data |
char* buffer; /* NULL terminated string containing the data |
338 |
* to be added to the clipboard. */ |
* to be added to the clipboard. */ |
339 |
{ |
{ |
340 |
TkWindow *winPtr = (TkWindow *) tkwin; |
TkWindow *winPtr = (TkWindow *) tkwin; |
341 |
TkDisplay *dispPtr = winPtr->dispPtr; |
TkDisplay *dispPtr = winPtr->dispPtr; |
342 |
TkClipboardTarget *targetPtr; |
TkClipboardTarget *targetPtr; |
343 |
TkClipboardBuffer *cbPtr; |
TkClipboardBuffer *cbPtr; |
344 |
|
|
345 |
/* |
/* |
346 |
* If this application doesn't already own the clipboard, clear |
* If this application doesn't already own the clipboard, clear |
347 |
* the clipboard. If we don't own the clipboard selection, claim it. |
* the clipboard. If we don't own the clipboard selection, claim it. |
348 |
*/ |
*/ |
349 |
|
|
350 |
if (dispPtr->clipboardAppPtr != winPtr->mainPtr) { |
if (dispPtr->clipboardAppPtr != winPtr->mainPtr) { |
351 |
Tk_ClipboardClear(interp, tkwin); |
Tk_ClipboardClear(interp, tkwin); |
352 |
} else if (!dispPtr->clipboardActive) { |
} else if (!dispPtr->clipboardActive) { |
353 |
Tk_OwnSelection(dispPtr->clipWindow, dispPtr->clipboardAtom, |
Tk_OwnSelection(dispPtr->clipWindow, dispPtr->clipboardAtom, |
354 |
ClipboardLostSel, (ClientData) dispPtr); |
ClipboardLostSel, (ClientData) dispPtr); |
355 |
dispPtr->clipboardActive = 1; |
dispPtr->clipboardActive = 1; |
356 |
} |
} |
357 |
|
|
358 |
/* |
/* |
359 |
* Check to see if the specified target is already present on the |
* Check to see if the specified target is already present on the |
360 |
* clipboard. If it isn't, we need to create a new target; otherwise, |
* clipboard. If it isn't, we need to create a new target; otherwise, |
361 |
* we just append the new buffer to the clipboard list. |
* we just append the new buffer to the clipboard list. |
362 |
*/ |
*/ |
363 |
|
|
364 |
for (targetPtr = dispPtr->clipTargetPtr; targetPtr != NULL; |
for (targetPtr = dispPtr->clipTargetPtr; targetPtr != NULL; |
365 |
targetPtr = targetPtr->nextPtr) { |
targetPtr = targetPtr->nextPtr) { |
366 |
if (targetPtr->type == type) |
if (targetPtr->type == type) |
367 |
break; |
break; |
368 |
} |
} |
369 |
if (targetPtr == NULL) { |
if (targetPtr == NULL) { |
370 |
targetPtr = (TkClipboardTarget*) ckalloc(sizeof(TkClipboardTarget)); |
targetPtr = (TkClipboardTarget*) ckalloc(sizeof(TkClipboardTarget)); |
371 |
targetPtr->type = type; |
targetPtr->type = type; |
372 |
targetPtr->format = format; |
targetPtr->format = format; |
373 |
targetPtr->firstBufferPtr = targetPtr->lastBufferPtr = NULL; |
targetPtr->firstBufferPtr = targetPtr->lastBufferPtr = NULL; |
374 |
targetPtr->nextPtr = dispPtr->clipTargetPtr; |
targetPtr->nextPtr = dispPtr->clipTargetPtr; |
375 |
dispPtr->clipTargetPtr = targetPtr; |
dispPtr->clipTargetPtr = targetPtr; |
376 |
Tk_CreateSelHandler(dispPtr->clipWindow, dispPtr->clipboardAtom, |
Tk_CreateSelHandler(dispPtr->clipWindow, dispPtr->clipboardAtom, |
377 |
type, ClipboardHandler, (ClientData) targetPtr, format); |
type, ClipboardHandler, (ClientData) targetPtr, format); |
378 |
} else if (targetPtr->format != format) { |
} else if (targetPtr->format != format) { |
379 |
Tcl_AppendResult(interp, "format \"", Tk_GetAtomName(tkwin, format), |
Tcl_AppendResult(interp, "format \"", Tk_GetAtomName(tkwin, format), |
380 |
"\" does not match current format \"", |
"\" does not match current format \"", |
381 |
Tk_GetAtomName(tkwin, targetPtr->format),"\" for ", |
Tk_GetAtomName(tkwin, targetPtr->format),"\" for ", |
382 |
Tk_GetAtomName(tkwin, type), (char *) NULL); |
Tk_GetAtomName(tkwin, type), (char *) NULL); |
383 |
return TCL_ERROR; |
return TCL_ERROR; |
384 |
} |
} |
385 |
|
|
386 |
/* |
/* |
387 |
* Append a new buffer to the buffer chain. |
* Append a new buffer to the buffer chain. |
388 |
*/ |
*/ |
389 |
|
|
390 |
cbPtr = (TkClipboardBuffer*) ckalloc(sizeof(TkClipboardBuffer)); |
cbPtr = (TkClipboardBuffer*) ckalloc(sizeof(TkClipboardBuffer)); |
391 |
cbPtr->nextPtr = NULL; |
cbPtr->nextPtr = NULL; |
392 |
if (targetPtr->lastBufferPtr != NULL) { |
if (targetPtr->lastBufferPtr != NULL) { |
393 |
targetPtr->lastBufferPtr->nextPtr = cbPtr; |
targetPtr->lastBufferPtr->nextPtr = cbPtr; |
394 |
} else { |
} else { |
395 |
targetPtr->firstBufferPtr = cbPtr; |
targetPtr->firstBufferPtr = cbPtr; |
396 |
} |
} |
397 |
targetPtr->lastBufferPtr = cbPtr; |
targetPtr->lastBufferPtr = cbPtr; |
398 |
|
|
399 |
cbPtr->length = strlen(buffer); |
cbPtr->length = strlen(buffer); |
400 |
cbPtr->buffer = (char *) ckalloc((unsigned) (cbPtr->length + 1)); |
cbPtr->buffer = (char *) ckalloc((unsigned) (cbPtr->length + 1)); |
401 |
strcpy(cbPtr->buffer, buffer); |
strcpy(cbPtr->buffer, buffer); |
402 |
|
|
403 |
TkSelUpdateClipboard((TkWindow*)(dispPtr->clipWindow), targetPtr); |
TkSelUpdateClipboard((TkWindow*)(dispPtr->clipWindow), targetPtr); |
404 |
|
|
405 |
return TCL_OK; |
return TCL_OK; |
406 |
} |
} |
407 |
|
|
408 |
/* |
/* |
409 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
410 |
* |
* |
411 |
* Tk_ClipboardCmd -- |
* Tk_ClipboardCmd -- |
412 |
* |
* |
413 |
* This procedure is invoked to process the "clipboard" Tcl |
* This procedure is invoked to process the "clipboard" Tcl |
414 |
* command. See the user documentation for details on what |
* command. See the user documentation for details on what |
415 |
* it does. |
* it does. |
416 |
* |
* |
417 |
* Results: |
* Results: |
418 |
* A standard Tcl result. |
* A standard Tcl result. |
419 |
* |
* |
420 |
* Side effects: |
* Side effects: |
421 |
* See the user documentation. |
* See the user documentation. |
422 |
* |
* |
423 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
424 |
*/ |
*/ |
425 |
|
|
426 |
int |
int |
427 |
Tk_ClipboardCmd(clientData, interp, argc, argv) |
Tk_ClipboardCmd(clientData, interp, argc, argv) |
428 |
ClientData clientData; /* Main window associated with |
ClientData clientData; /* Main window associated with |
429 |
* interpreter. */ |
* interpreter. */ |
430 |
Tcl_Interp *interp; /* Current interpreter. */ |
Tcl_Interp *interp; /* Current interpreter. */ |
431 |
int argc; /* Number of arguments. */ |
int argc; /* Number of arguments. */ |
432 |
char **argv; /* Argument strings. */ |
char **argv; /* Argument strings. */ |
433 |
{ |
{ |
434 |
Tk_Window tkwin = (Tk_Window) clientData; |
Tk_Window tkwin = (Tk_Window) clientData; |
435 |
char *path = NULL; |
char *path = NULL; |
436 |
size_t length; |
size_t length; |
437 |
int count; |
int count; |
438 |
char c; |
char c; |
439 |
char **args; |
char **args; |
440 |
|
|
441 |
if (argc < 2) { |
if (argc < 2) { |
442 |
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
443 |
" option ?arg arg ...?\"", (char *) NULL); |
" option ?arg arg ...?\"", (char *) NULL); |
444 |
return TCL_ERROR; |
return TCL_ERROR; |
445 |
} |
} |
446 |
c = argv[1][0]; |
c = argv[1][0]; |
447 |
length = strlen(argv[1]); |
length = strlen(argv[1]); |
448 |
if ((c == 'a') && (strncmp(argv[1], "append", length) == 0)) { |
if ((c == 'a') && (strncmp(argv[1], "append", length) == 0)) { |
449 |
Atom target, format; |
Atom target, format; |
450 |
char *targetName = NULL; |
char *targetName = NULL; |
451 |
char *formatName = NULL; |
char *formatName = NULL; |
452 |
|
|
453 |
for (count = argc-2, args = argv+2; count > 1; count -= 2, args += 2) { |
for (count = argc-2, args = argv+2; count > 1; count -= 2, args += 2) { |
454 |
if (args[0][0] != '-') { |
if (args[0][0] != '-') { |
455 |
break; |
break; |
456 |
} |
} |
457 |
c = args[0][1]; |
c = args[0][1]; |
458 |
length = strlen(args[0]); |
length = strlen(args[0]); |
459 |
if ((c == '-') && (length == 2)) { |
if ((c == '-') && (length == 2)) { |
460 |
args++; |
args++; |
461 |
count--; |
count--; |
462 |
break; |
break; |
463 |
} |
} |
464 |
if ((c == 'd') && (strncmp(args[0], "-displayof", length) == 0)) { |
if ((c == 'd') && (strncmp(args[0], "-displayof", length) == 0)) { |
465 |
path = args[1]; |
path = args[1]; |
466 |
} else if ((c == 'f') |
} else if ((c == 'f') |
467 |
&& (strncmp(args[0], "-format", length) == 0)) { |
&& (strncmp(args[0], "-format", length) == 0)) { |
468 |
formatName = args[1]; |
formatName = args[1]; |
469 |
} else if ((c == 't') |
} else if ((c == 't') |
470 |
&& (strncmp(args[0], "-type", length) == 0)) { |
&& (strncmp(args[0], "-type", length) == 0)) { |
471 |
targetName = args[1]; |
targetName = args[1]; |
472 |
} else { |
} else { |
473 |
Tcl_AppendResult(interp, "unknown option \"", args[0], |
Tcl_AppendResult(interp, "unknown option \"", args[0], |
474 |
"\"", (char *) NULL); |
"\"", (char *) NULL); |
475 |
return TCL_ERROR; |
return TCL_ERROR; |
476 |
} |
} |
477 |
} |
} |
478 |
if (count != 1) { |
if (count != 1) { |
479 |
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
480 |
" append ?options? data\"", (char *) NULL); |
" append ?options? data\"", (char *) NULL); |
481 |
return TCL_ERROR; |
return TCL_ERROR; |
482 |
} |
} |
483 |
if (path != NULL) { |
if (path != NULL) { |
484 |
tkwin = Tk_NameToWindow(interp, path, tkwin); |
tkwin = Tk_NameToWindow(interp, path, tkwin); |
485 |
} |
} |
486 |
if (tkwin == NULL) { |
if (tkwin == NULL) { |
487 |
return TCL_ERROR; |
return TCL_ERROR; |
488 |
} |
} |
489 |
if (targetName != NULL) { |
if (targetName != NULL) { |
490 |
target = Tk_InternAtom(tkwin, targetName); |
target = Tk_InternAtom(tkwin, targetName); |
491 |
} else { |
} else { |
492 |
target = XA_STRING; |
target = XA_STRING; |
493 |
} |
} |
494 |
if (formatName != NULL) { |
if (formatName != NULL) { |
495 |
format = Tk_InternAtom(tkwin, formatName); |
format = Tk_InternAtom(tkwin, formatName); |
496 |
} else { |
} else { |
497 |
format = XA_STRING; |
format = XA_STRING; |
498 |
} |
} |
499 |
return Tk_ClipboardAppend(interp, tkwin, target, format, args[0]); |
return Tk_ClipboardAppend(interp, tkwin, target, format, args[0]); |
500 |
} else if ((c == 'c') && (strncmp(argv[1], "clear", length) == 0)) { |
} else if ((c == 'c') && (strncmp(argv[1], "clear", length) == 0)) { |
501 |
for (count = argc-2, args = argv+2; count > 0; count -= 2, args += 2) { |
for (count = argc-2, args = argv+2; count > 0; count -= 2, args += 2) { |
502 |
if (args[0][0] != '-') { |
if (args[0][0] != '-') { |
503 |
break; |
break; |
504 |
} |
} |
505 |
if (count < 2) { |
if (count < 2) { |
506 |
Tcl_AppendResult(interp, "value for \"", *args, |
Tcl_AppendResult(interp, "value for \"", *args, |
507 |
"\" missing", (char *) NULL); |
"\" missing", (char *) NULL); |
508 |
return TCL_ERROR; |
return TCL_ERROR; |
509 |
} |
} |
510 |
c = args[0][1]; |
c = args[0][1]; |
511 |
length = strlen(args[0]); |
length = strlen(args[0]); |
512 |
if ((c == 'd') && (strncmp(args[0], "-displayof", length) == 0)) { |
if ((c == 'd') && (strncmp(args[0], "-displayof", length) == 0)) { |
513 |
path = args[1]; |
path = args[1]; |
514 |
} else { |
} else { |
515 |
Tcl_AppendResult(interp, "unknown option \"", args[0], |
Tcl_AppendResult(interp, "unknown option \"", args[0], |
516 |
"\"", (char *) NULL); |
"\"", (char *) NULL); |
517 |
return TCL_ERROR; |
return TCL_ERROR; |
518 |
} |
} |
519 |
} |
} |
520 |
if (count > 0) { |
if (count > 0) { |
521 |
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
522 |
" clear ?options?\"", (char *) NULL); |
" clear ?options?\"", (char *) NULL); |
523 |
return TCL_ERROR; |
return TCL_ERROR; |
524 |
} |
} |
525 |
if (path != NULL) { |
if (path != NULL) { |
526 |
tkwin = Tk_NameToWindow(interp, path, tkwin); |
tkwin = Tk_NameToWindow(interp, path, tkwin); |
527 |
} |
} |
528 |
if (tkwin == NULL) { |
if (tkwin == NULL) { |
529 |
return TCL_ERROR; |
return TCL_ERROR; |
530 |
} |
} |
531 |
return Tk_ClipboardClear(interp, tkwin); |
return Tk_ClipboardClear(interp, tkwin); |
532 |
} else { |
} else { |
533 |
char buf[100 + TCL_INTEGER_SPACE]; |
char buf[100 + TCL_INTEGER_SPACE]; |
534 |
|
|
535 |
sprintf(buf, "bad option \"%.50s\": must be clear or append", argv[1]); |
sprintf(buf, "bad option \"%.50s\": must be clear or append", argv[1]); |
536 |
Tcl_SetResult(interp, buf, TCL_VOLATILE); |
Tcl_SetResult(interp, buf, TCL_VOLATILE); |
537 |
return TCL_ERROR; |
return TCL_ERROR; |
538 |
} |
} |
539 |
} |
} |
540 |
|
|
541 |
/* |
/* |
542 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
543 |
* |
* |
544 |
* TkClipInit -- |
* TkClipInit -- |
545 |
* |
* |
546 |
* This procedure is called to initialize the window for claiming |
* This procedure is called to initialize the window for claiming |
547 |
* clipboard ownership and for receiving selection get results. This |
* clipboard ownership and for receiving selection get results. This |
548 |
* function is called from tkSelect.c as well as tkClipboard.c. |
* function is called from tkSelect.c as well as tkClipboard.c. |
549 |
* |
* |
550 |
* Results: |
* Results: |
551 |
* The result is a standard Tcl return value, which is normally TCL_OK. |
* The result is a standard Tcl return value, which is normally TCL_OK. |
552 |
* If an error occurs then an error message is left in the interp's |
* If an error occurs then an error message is left in the interp's |
553 |
* result and TCL_ERROR is returned. |
* result and TCL_ERROR is returned. |
554 |
* |
* |
555 |
* Side effects: |
* Side effects: |
556 |
* Sets up the clipWindow and related data structures. |
* Sets up the clipWindow and related data structures. |
557 |
* |
* |
558 |
*---------------------------------------------------------------------- |
*---------------------------------------------------------------------- |
559 |
*/ |
*/ |
560 |
|
|
561 |
int |
int |
562 |
TkClipInit(interp, dispPtr) |
TkClipInit(interp, dispPtr) |
563 |
Tcl_Interp *interp; /* Interpreter to use for error |
Tcl_Interp *interp; /* Interpreter to use for error |
564 |
* reporting. */ |
* reporting. */ |
565 |
register TkDisplay *dispPtr;/* Display to initialize. */ |
register TkDisplay *dispPtr;/* Display to initialize. */ |
566 |
{ |
{ |
567 |
XSetWindowAttributes atts; |
XSetWindowAttributes atts; |
568 |
|
|
569 |
dispPtr->clipTargetPtr = NULL; |
dispPtr->clipTargetPtr = NULL; |
570 |
dispPtr->clipboardActive = 0; |
dispPtr->clipboardActive = 0; |
571 |
dispPtr->clipboardAppPtr = NULL; |
dispPtr->clipboardAppPtr = NULL; |
572 |
|
|
573 |
/* |
/* |
574 |
* Create the window used for clipboard ownership and selection retrieval, |
* Create the window used for clipboard ownership and selection retrieval, |
575 |
* and set up an event handler for it. |
* and set up an event handler for it. |
576 |
*/ |
*/ |
577 |
|
|
578 |
dispPtr->clipWindow = Tk_CreateWindow(interp, (Tk_Window) NULL, |
dispPtr->clipWindow = Tk_CreateWindow(interp, (Tk_Window) NULL, |
579 |
"_clip", DisplayString(dispPtr->display)); |
"_clip", DisplayString(dispPtr->display)); |
580 |
if (dispPtr->clipWindow == NULL) { |
if (dispPtr->clipWindow == NULL) { |
581 |
return TCL_ERROR; |
return TCL_ERROR; |
582 |
} |
} |
583 |
atts.override_redirect = True; |
atts.override_redirect = True; |
584 |
Tk_ChangeWindowAttributes(dispPtr->clipWindow, CWOverrideRedirect, &atts); |
Tk_ChangeWindowAttributes(dispPtr->clipWindow, CWOverrideRedirect, &atts); |
585 |
Tk_MakeWindowExist(dispPtr->clipWindow); |
Tk_MakeWindowExist(dispPtr->clipWindow); |
586 |
|
|
587 |
if (dispPtr->multipleAtom == None) { |
if (dispPtr->multipleAtom == None) { |
588 |
/* |
/* |
589 |
* Need to invoke selection initialization to make sure that |
* Need to invoke selection initialization to make sure that |
590 |
* atoms we depend on below are defined. |
* atoms we depend on below are defined. |
591 |
*/ |
*/ |
592 |
|
|
593 |
TkSelInit(dispPtr->clipWindow); |
TkSelInit(dispPtr->clipWindow); |
594 |
} |
} |
595 |
|
|
596 |
/* |
/* |
597 |
* Create selection handlers for types TK_APPLICATION and TK_WINDOW |
* Create selection handlers for types TK_APPLICATION and TK_WINDOW |
598 |
* on this window. Can't use the default handlers for these types |
* on this window. Can't use the default handlers for these types |
599 |
* because this isn't a full-fledged window. |
* because this isn't a full-fledged window. |
600 |
*/ |
*/ |
601 |
|
|
602 |
Tk_CreateSelHandler(dispPtr->clipWindow, dispPtr->clipboardAtom, |
Tk_CreateSelHandler(dispPtr->clipWindow, dispPtr->clipboardAtom, |
603 |
dispPtr->applicationAtom, ClipboardAppHandler, |
dispPtr->applicationAtom, ClipboardAppHandler, |
604 |
(ClientData) dispPtr, XA_STRING); |
(ClientData) dispPtr, XA_STRING); |
605 |
Tk_CreateSelHandler(dispPtr->clipWindow, dispPtr->clipboardAtom, |
Tk_CreateSelHandler(dispPtr->clipWindow, dispPtr->clipboardAtom, |
606 |
dispPtr->windowAtom, ClipboardWindowHandler, |
dispPtr->windowAtom, ClipboardWindowHandler, |
607 |
(ClientData) dispPtr, XA_STRING); |
(ClientData) dispPtr, XA_STRING); |
608 |
return TCL_OK; |
return TCL_OK; |
609 |
} |
} |
610 |
|
|
611 |
/* End of tkclipboard.c */ |
/* End of tkclipboard.c */ |