1 |
dashley |
71 |
/* $Header$ */ |
2 |
|
|
|
3 |
|
|
/* |
4 |
|
|
* tkImage.c -- |
5 |
|
|
* |
6 |
|
|
* This module implements the image protocol, which allows lots |
7 |
|
|
* of different kinds of images to be used in lots of different |
8 |
|
|
* widgets. |
9 |
|
|
* |
10 |
|
|
* Copyright (c) 1994 The Regents of the University of California. |
11 |
|
|
* Copyright (c) 1994-1997 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: tkimage.c,v 1.1.1.1 2001/06/13 05:02:12 dtashley Exp $ |
17 |
|
|
*/ |
18 |
|
|
|
19 |
|
|
#include "tkInt.h" |
20 |
|
|
#include "tkPort.h" |
21 |
|
|
|
22 |
|
|
/* |
23 |
|
|
* Each call to Tk_GetImage returns a pointer to one of the following |
24 |
|
|
* structures, which is used as a token by clients (widgets) that |
25 |
|
|
* display images. |
26 |
|
|
*/ |
27 |
|
|
|
28 |
|
|
typedef struct Image { |
29 |
|
|
Tk_Window tkwin; /* Window passed to Tk_GetImage (needed to |
30 |
|
|
* "re-get" the image later if the manager |
31 |
|
|
* changes). */ |
32 |
|
|
Display *display; /* Display for tkwin. Needed because when |
33 |
|
|
* the image is eventually freed tkwin may |
34 |
|
|
* not exist anymore. */ |
35 |
|
|
struct ImageMaster *masterPtr; |
36 |
|
|
/* Master for this image (identifiers image |
37 |
|
|
* manager, for example). */ |
38 |
|
|
ClientData instanceData; |
39 |
|
|
/* One word argument to pass to image manager |
40 |
|
|
* when dealing with this image instance. */ |
41 |
|
|
Tk_ImageChangedProc *changeProc; |
42 |
|
|
/* Code in widget to call when image changes |
43 |
|
|
* in a way that affects redisplay. */ |
44 |
|
|
ClientData widgetClientData; |
45 |
|
|
/* Argument to pass to changeProc. */ |
46 |
|
|
struct Image *nextPtr; /* Next in list of all image instances |
47 |
|
|
* associated with the same name. */ |
48 |
|
|
|
49 |
|
|
} Image; |
50 |
|
|
|
51 |
|
|
/* |
52 |
|
|
* For each image master there is one of the following structures, |
53 |
|
|
* which represents a name in the image table and all of the images |
54 |
|
|
* instantiated from it. Entries in mainPtr->imageTable point to |
55 |
|
|
* these structures. |
56 |
|
|
*/ |
57 |
|
|
|
58 |
|
|
typedef struct ImageMaster { |
59 |
|
|
Tk_ImageType *typePtr; /* Information about image type. NULL means |
60 |
|
|
* that no image manager owns this image: the |
61 |
|
|
* image was deleted. */ |
62 |
|
|
ClientData masterData; /* One-word argument to pass to image mgr |
63 |
|
|
* when dealing with the master, as opposed |
64 |
|
|
* to instances. */ |
65 |
|
|
int width, height; /* Last known dimensions for image. */ |
66 |
|
|
Tcl_HashTable *tablePtr; /* Pointer to hash table containing image |
67 |
|
|
* (the imageTable field in some TkMainInfo |
68 |
|
|
* structure). */ |
69 |
|
|
Tcl_HashEntry *hPtr; /* Hash entry in mainPtr->imageTable for |
70 |
|
|
* this structure (used to delete the hash |
71 |
|
|
* entry). */ |
72 |
|
|
Image *instancePtr; /* Pointer to first in list of instances |
73 |
|
|
* derived from this name. */ |
74 |
|
|
} ImageMaster; |
75 |
|
|
|
76 |
|
|
typedef struct ThreadSpecificData { |
77 |
|
|
Tk_ImageType *imageTypeList;/* First in a list of all known image |
78 |
|
|
* types. */ |
79 |
|
|
Tk_ImageType *oldImageTypeList;/* First in a list of all known old-style image |
80 |
|
|
* types. */ |
81 |
|
|
} ThreadSpecificData; |
82 |
|
|
static Tcl_ThreadDataKey dataKey; |
83 |
|
|
|
84 |
|
|
/* |
85 |
|
|
* Prototypes for local procedures: |
86 |
|
|
*/ |
87 |
|
|
|
88 |
|
|
static void DeleteImage _ANSI_ARGS_((ImageMaster *masterPtr)); |
89 |
|
|
|
90 |
|
|
/* |
91 |
|
|
*---------------------------------------------------------------------- |
92 |
|
|
* |
93 |
|
|
* Tk_CreateOldImageType, Tk_CreateImageType -- |
94 |
|
|
* |
95 |
|
|
* This procedure is invoked by an image manager to tell Tk about |
96 |
|
|
* a new kind of image and the procedures that manage the new type. |
97 |
|
|
* The procedure is typically invoked during Tcl_AppInit. |
98 |
|
|
* |
99 |
|
|
* Results: |
100 |
|
|
* None. |
101 |
|
|
* |
102 |
|
|
* Side effects: |
103 |
|
|
* The new image type is entered into a table used in the "image |
104 |
|
|
* create" command. |
105 |
|
|
* |
106 |
|
|
*---------------------------------------------------------------------- |
107 |
|
|
*/ |
108 |
|
|
|
109 |
|
|
void |
110 |
|
|
Tk_CreateOldImageType(typePtr) |
111 |
|
|
Tk_ImageType *typePtr; /* Structure describing the type. All of |
112 |
|
|
* the fields except "nextPtr" must be filled |
113 |
|
|
* in by caller. Must not have been passed |
114 |
|
|
* to Tk_CreateImageType previously. */ |
115 |
|
|
{ |
116 |
|
|
ThreadSpecificData *tsdPtr = (ThreadSpecificData *) |
117 |
|
|
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); |
118 |
|
|
|
119 |
|
|
typePtr->nextPtr = tsdPtr->oldImageTypeList; |
120 |
|
|
tsdPtr->oldImageTypeList = typePtr; |
121 |
|
|
} |
122 |
|
|
|
123 |
|
|
void |
124 |
|
|
Tk_CreateImageType(typePtr) |
125 |
|
|
Tk_ImageType *typePtr; /* Structure describing the type. All of |
126 |
|
|
* the fields except "nextPtr" must be filled |
127 |
|
|
* in by caller. Must not have been passed |
128 |
|
|
* to Tk_CreateImageType previously. */ |
129 |
|
|
{ |
130 |
|
|
ThreadSpecificData *tsdPtr = (ThreadSpecificData *) |
131 |
|
|
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); |
132 |
|
|
|
133 |
|
|
typePtr->nextPtr = tsdPtr->imageTypeList; |
134 |
|
|
tsdPtr->imageTypeList = typePtr; |
135 |
|
|
} |
136 |
|
|
|
137 |
|
|
/* |
138 |
|
|
*---------------------------------------------------------------------- |
139 |
|
|
* |
140 |
|
|
* Tk_ImageObjCmd -- |
141 |
|
|
* |
142 |
|
|
* This procedure is invoked to process the "image" Tcl command. |
143 |
|
|
* See the user documentation for details on what it does. |
144 |
|
|
* |
145 |
|
|
* Results: |
146 |
|
|
* A standard Tcl result. |
147 |
|
|
* |
148 |
|
|
* Side effects: |
149 |
|
|
* See the user documentation. |
150 |
|
|
* |
151 |
|
|
*---------------------------------------------------------------------- |
152 |
|
|
*/ |
153 |
|
|
|
154 |
|
|
int |
155 |
|
|
Tk_ImageObjCmd(clientData, interp, objc, objv) |
156 |
|
|
ClientData clientData; /* Main window associated with interpreter. */ |
157 |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
158 |
|
|
int objc; /* Number of arguments. */ |
159 |
|
|
Tcl_Obj *CONST objv[]; /* Argument strings. */ |
160 |
|
|
{ |
161 |
|
|
static char *imageOptions[] = { |
162 |
|
|
"create", "delete", "height", "names", "type", "types", "width", |
163 |
|
|
(char *) NULL |
164 |
|
|
}; |
165 |
|
|
enum options { |
166 |
|
|
IMAGE_CREATE, IMAGE_DELETE, IMAGE_HEIGHT, IMAGE_NAMES, |
167 |
|
|
IMAGE_TYPE, IMAGE_TYPES, IMAGE_WIDTH |
168 |
|
|
}; |
169 |
|
|
TkWindow *winPtr = (TkWindow *) clientData; |
170 |
|
|
int i, new, firstOption, index; |
171 |
|
|
Tk_ImageType *typePtr; |
172 |
|
|
ImageMaster *masterPtr; |
173 |
|
|
Image *imagePtr; |
174 |
|
|
Tcl_HashEntry *hPtr; |
175 |
|
|
Tcl_HashSearch search; |
176 |
|
|
char idString[16 + TCL_INTEGER_SPACE], *name; |
177 |
|
|
TkDisplay *dispPtr = winPtr->dispPtr; |
178 |
|
|
ThreadSpecificData *tsdPtr = (ThreadSpecificData *) |
179 |
|
|
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); |
180 |
|
|
|
181 |
|
|
if (objc < 2) { |
182 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "option ?args?"); |
183 |
|
|
return TCL_ERROR; |
184 |
|
|
} |
185 |
|
|
|
186 |
|
|
if (Tcl_GetIndexFromObj(interp, objv[1], imageOptions, "option", 0, |
187 |
|
|
&index) != TCL_OK) { |
188 |
|
|
return TCL_ERROR; |
189 |
|
|
} |
190 |
|
|
switch ((enum options) index) { |
191 |
|
|
case IMAGE_CREATE: { |
192 |
|
|
char *arg; |
193 |
|
|
Tcl_Obj **args; |
194 |
|
|
int oldimage = 0; |
195 |
|
|
if (objc < 3) { |
196 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "type ?name? ?options?"); |
197 |
|
|
return TCL_ERROR; |
198 |
|
|
} |
199 |
|
|
|
200 |
|
|
/* |
201 |
|
|
* Look up the image type. |
202 |
|
|
*/ |
203 |
|
|
|
204 |
|
|
arg = Tcl_GetString(objv[2]); |
205 |
|
|
for (typePtr = tsdPtr->imageTypeList; typePtr != NULL; |
206 |
|
|
typePtr = typePtr->nextPtr) { |
207 |
|
|
if ((*arg == typePtr->name[0]) |
208 |
|
|
&& (strcmp(arg, typePtr->name) == 0)) { |
209 |
|
|
break; |
210 |
|
|
} |
211 |
|
|
} |
212 |
|
|
if (typePtr == NULL) { |
213 |
|
|
oldimage = 1; |
214 |
|
|
for (typePtr = tsdPtr->oldImageTypeList; typePtr != NULL; |
215 |
|
|
typePtr = typePtr->nextPtr) { |
216 |
|
|
if ((*arg == typePtr->name[0]) |
217 |
|
|
&& (strcmp(arg, typePtr->name) == 0)) { |
218 |
|
|
break; |
219 |
|
|
} |
220 |
|
|
} |
221 |
|
|
} |
222 |
|
|
if (typePtr == NULL) { |
223 |
|
|
Tcl_AppendResult(interp, "image type \"", arg, |
224 |
|
|
"\" doesn't exist", (char *) NULL); |
225 |
|
|
return TCL_ERROR; |
226 |
|
|
} |
227 |
|
|
|
228 |
|
|
/* |
229 |
|
|
* Figure out a name to use for the new image. |
230 |
|
|
*/ |
231 |
|
|
|
232 |
|
|
if ((objc == 3) || (*(arg = Tcl_GetString(objv[3])) == '-')) { |
233 |
|
|
dispPtr->imageId++; |
234 |
|
|
sprintf(idString, "image%d", dispPtr->imageId); |
235 |
|
|
name = idString; |
236 |
|
|
firstOption = 3; |
237 |
|
|
} else { |
238 |
|
|
name = arg; |
239 |
|
|
firstOption = 4; |
240 |
|
|
} |
241 |
|
|
|
242 |
|
|
/* |
243 |
|
|
* Create the data structure for the new image. |
244 |
|
|
*/ |
245 |
|
|
|
246 |
|
|
hPtr = Tcl_CreateHashEntry(&winPtr->mainPtr->imageTable, |
247 |
|
|
name, &new); |
248 |
|
|
if (new) { |
249 |
|
|
masterPtr = (ImageMaster *) ckalloc(sizeof(ImageMaster)); |
250 |
|
|
masterPtr->typePtr = NULL; |
251 |
|
|
masterPtr->masterData = NULL; |
252 |
|
|
masterPtr->width = masterPtr->height = 1; |
253 |
|
|
masterPtr->tablePtr = &winPtr->mainPtr->imageTable; |
254 |
|
|
masterPtr->hPtr = hPtr; |
255 |
|
|
masterPtr->instancePtr = NULL; |
256 |
|
|
Tcl_SetHashValue(hPtr, masterPtr); |
257 |
|
|
} else { |
258 |
|
|
/* |
259 |
|
|
* An image already exists by this name. Disconnect the |
260 |
|
|
* instances from the master. |
261 |
|
|
*/ |
262 |
|
|
|
263 |
|
|
masterPtr = (ImageMaster *) Tcl_GetHashValue(hPtr); |
264 |
|
|
if (masterPtr->typePtr != NULL) { |
265 |
|
|
for (imagePtr = masterPtr->instancePtr; imagePtr != NULL; |
266 |
|
|
imagePtr = imagePtr->nextPtr) { |
267 |
|
|
(*masterPtr->typePtr->freeProc)( |
268 |
|
|
imagePtr->instanceData, imagePtr->display); |
269 |
|
|
(*imagePtr->changeProc)(imagePtr->widgetClientData, |
270 |
|
|
0, 0, masterPtr->width, masterPtr->height, |
271 |
|
|
masterPtr->width, masterPtr->height); |
272 |
|
|
} |
273 |
|
|
(*masterPtr->typePtr->deleteProc)(masterPtr->masterData); |
274 |
|
|
masterPtr->typePtr = NULL; |
275 |
|
|
} |
276 |
|
|
} |
277 |
|
|
|
278 |
|
|
/* |
279 |
|
|
* Call the image type manager so that it can perform its own |
280 |
|
|
* initialization, then re-"get" for any existing instances of |
281 |
|
|
* the image. |
282 |
|
|
*/ |
283 |
|
|
|
284 |
|
|
objv += firstOption; |
285 |
|
|
objc -= firstOption; |
286 |
|
|
args = (Tcl_Obj **) objv; |
287 |
|
|
if (oldimage) { |
288 |
|
|
int i; |
289 |
|
|
args = (Tcl_Obj **) ckalloc((objc+1) * sizeof(char *)); |
290 |
|
|
for (i = 0; i < objc; i++) { |
291 |
|
|
args[i] = (Tcl_Obj *) Tcl_GetString(objv[i]); |
292 |
|
|
} |
293 |
|
|
args[objc] = NULL; |
294 |
|
|
} |
295 |
|
|
if ((*typePtr->createProc)(interp, name, objc, |
296 |
|
|
args, typePtr, (Tk_ImageMaster) masterPtr, |
297 |
|
|
&masterPtr->masterData) != TCL_OK) { |
298 |
|
|
DeleteImage(masterPtr); |
299 |
|
|
if (oldimage) { |
300 |
|
|
ckfree((char *) args); |
301 |
|
|
} |
302 |
|
|
return TCL_ERROR; |
303 |
|
|
} |
304 |
|
|
if (oldimage) { |
305 |
|
|
ckfree((char *) args); |
306 |
|
|
} |
307 |
|
|
masterPtr->typePtr = typePtr; |
308 |
|
|
for (imagePtr = masterPtr->instancePtr; imagePtr != NULL; |
309 |
|
|
imagePtr = imagePtr->nextPtr) { |
310 |
|
|
imagePtr->instanceData = (*typePtr->getProc)( |
311 |
|
|
imagePtr->tkwin, masterPtr->masterData); |
312 |
|
|
} |
313 |
|
|
Tcl_SetResult(interp, |
314 |
|
|
Tcl_GetHashKey(&winPtr->mainPtr->imageTable, hPtr), |
315 |
|
|
TCL_STATIC); |
316 |
|
|
break; |
317 |
|
|
} |
318 |
|
|
case IMAGE_DELETE: { |
319 |
|
|
for (i = 2; i < objc; i++) { |
320 |
|
|
char *arg = Tcl_GetString(objv[i]); |
321 |
|
|
hPtr = Tcl_FindHashEntry(&winPtr->mainPtr->imageTable, arg); |
322 |
|
|
if (hPtr == NULL) { |
323 |
|
|
Tcl_AppendResult(interp, "image \"", arg, |
324 |
|
|
"\" doesn't exist", (char *) NULL); |
325 |
|
|
return TCL_ERROR; |
326 |
|
|
} |
327 |
|
|
masterPtr = (ImageMaster *) Tcl_GetHashValue(hPtr); |
328 |
|
|
DeleteImage(masterPtr); |
329 |
|
|
} |
330 |
|
|
break; |
331 |
|
|
} |
332 |
|
|
case IMAGE_HEIGHT: { |
333 |
|
|
char *arg; |
334 |
|
|
if (objc != 3) { |
335 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "name"); |
336 |
|
|
return TCL_ERROR; |
337 |
|
|
} |
338 |
|
|
arg = Tcl_GetString(objv[2]); |
339 |
|
|
hPtr = Tcl_FindHashEntry(&winPtr->mainPtr->imageTable, arg); |
340 |
|
|
if (hPtr == NULL) { |
341 |
|
|
Tcl_AppendResult(interp, "image \"", arg, |
342 |
|
|
"\" doesn't exist", (char *) NULL); |
343 |
|
|
return TCL_ERROR; |
344 |
|
|
} |
345 |
|
|
masterPtr = (ImageMaster *) Tcl_GetHashValue(hPtr); |
346 |
|
|
Tcl_SetIntObj(Tcl_GetObjResult(interp), masterPtr->height); |
347 |
|
|
break; |
348 |
|
|
} |
349 |
|
|
case IMAGE_NAMES: { |
350 |
|
|
if (objc != 2) { |
351 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, NULL); |
352 |
|
|
return TCL_ERROR; |
353 |
|
|
} |
354 |
|
|
for (hPtr = Tcl_FirstHashEntry(&winPtr->mainPtr->imageTable, &search); |
355 |
|
|
hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { |
356 |
|
|
Tcl_AppendElement(interp, Tcl_GetHashKey( |
357 |
|
|
&winPtr->mainPtr->imageTable, hPtr)); |
358 |
|
|
} |
359 |
|
|
break; |
360 |
|
|
} |
361 |
|
|
case IMAGE_TYPE: { |
362 |
|
|
char *arg; |
363 |
|
|
if (objc != 3) { |
364 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "name"); |
365 |
|
|
return TCL_ERROR; |
366 |
|
|
} |
367 |
|
|
arg = Tcl_GetString(objv[2]); |
368 |
|
|
hPtr = Tcl_FindHashEntry(&winPtr->mainPtr->imageTable, arg); |
369 |
|
|
if (hPtr == NULL) { |
370 |
|
|
Tcl_AppendResult(interp, "image \"", arg, |
371 |
|
|
"\" doesn't exist", (char *) NULL); |
372 |
|
|
return TCL_ERROR; |
373 |
|
|
} |
374 |
|
|
masterPtr = (ImageMaster *) Tcl_GetHashValue(hPtr); |
375 |
|
|
if (masterPtr->typePtr != NULL) { |
376 |
|
|
Tcl_SetResult(interp, masterPtr->typePtr->name, TCL_STATIC); |
377 |
|
|
} |
378 |
|
|
break; |
379 |
|
|
} |
380 |
|
|
case IMAGE_TYPES: { |
381 |
|
|
if (objc != 2) { |
382 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, NULL); |
383 |
|
|
return TCL_ERROR; |
384 |
|
|
} |
385 |
|
|
for (typePtr = tsdPtr->imageTypeList; typePtr != NULL; |
386 |
|
|
typePtr = typePtr->nextPtr) { |
387 |
|
|
Tcl_AppendElement(interp, typePtr->name); |
388 |
|
|
} |
389 |
|
|
for (typePtr = tsdPtr->oldImageTypeList; typePtr != NULL; |
390 |
|
|
typePtr = typePtr->nextPtr) { |
391 |
|
|
Tcl_AppendElement(interp, typePtr->name); |
392 |
|
|
} |
393 |
|
|
break; |
394 |
|
|
} |
395 |
|
|
case IMAGE_WIDTH: { |
396 |
|
|
char *arg; |
397 |
|
|
if (objc != 3) { |
398 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "name"); |
399 |
|
|
return TCL_ERROR; |
400 |
|
|
} |
401 |
|
|
arg = Tcl_GetString(objv[2]); |
402 |
|
|
hPtr = Tcl_FindHashEntry(&winPtr->mainPtr->imageTable, arg); |
403 |
|
|
if (hPtr == NULL) { |
404 |
|
|
Tcl_AppendResult(interp, "image \"", arg, |
405 |
|
|
"\" doesn't exist", (char *) NULL); |
406 |
|
|
return TCL_ERROR; |
407 |
|
|
} |
408 |
|
|
masterPtr = (ImageMaster *) Tcl_GetHashValue(hPtr); |
409 |
|
|
Tcl_SetIntObj(Tcl_GetObjResult(interp), masterPtr->width); |
410 |
|
|
break; |
411 |
|
|
} |
412 |
|
|
} |
413 |
|
|
return TCL_OK; |
414 |
|
|
} |
415 |
|
|
|
416 |
|
|
/* |
417 |
|
|
*---------------------------------------------------------------------- |
418 |
|
|
* |
419 |
|
|
* Tk_ImageChanged -- |
420 |
|
|
* |
421 |
|
|
* This procedure is called by an image manager whenever something |
422 |
|
|
* has happened that requires the image to be redrawn (some of its |
423 |
|
|
* pixels have changed, or its size has changed). |
424 |
|
|
* |
425 |
|
|
* Results: |
426 |
|
|
* None. |
427 |
|
|
* |
428 |
|
|
* Side effects: |
429 |
|
|
* Any widgets that display the image are notified so that they |
430 |
|
|
* can redisplay themselves as appropriate. |
431 |
|
|
* |
432 |
|
|
*---------------------------------------------------------------------- |
433 |
|
|
*/ |
434 |
|
|
|
435 |
|
|
void |
436 |
|
|
Tk_ImageChanged(imageMaster, x, y, width, height, imageWidth, |
437 |
|
|
imageHeight) |
438 |
|
|
Tk_ImageMaster imageMaster; /* Image that needs redisplay. */ |
439 |
|
|
int x, y; /* Coordinates of upper-left pixel of |
440 |
|
|
* region of image that needs to be |
441 |
|
|
* redrawn. */ |
442 |
|
|
int width, height; /* Dimensions (in pixels) of region of |
443 |
|
|
* image to redraw. If either dimension |
444 |
|
|
* is zero then the image doesn't need to |
445 |
|
|
* be redrawn (perhaps all that happened is |
446 |
|
|
* that its size changed). */ |
447 |
|
|
int imageWidth, imageHeight;/* New dimensions of image. */ |
448 |
|
|
{ |
449 |
|
|
ImageMaster *masterPtr = (ImageMaster *) imageMaster; |
450 |
|
|
Image *imagePtr; |
451 |
|
|
|
452 |
|
|
masterPtr->width = imageWidth; |
453 |
|
|
masterPtr->height = imageHeight; |
454 |
|
|
for (imagePtr = masterPtr->instancePtr; imagePtr != NULL; |
455 |
|
|
imagePtr = imagePtr->nextPtr) { |
456 |
|
|
(*imagePtr->changeProc)(imagePtr->widgetClientData, x, y, |
457 |
|
|
width, height, imageWidth, imageHeight); |
458 |
|
|
} |
459 |
|
|
} |
460 |
|
|
|
461 |
|
|
/* |
462 |
|
|
*---------------------------------------------------------------------- |
463 |
|
|
* |
464 |
|
|
* Tk_NameOfImage -- |
465 |
|
|
* |
466 |
|
|
* Given a token for an image master, this procedure returns |
467 |
|
|
* the name of the image. |
468 |
|
|
* |
469 |
|
|
* Results: |
470 |
|
|
* The return value is the string name for imageMaster. |
471 |
|
|
* |
472 |
|
|
* Side effects: |
473 |
|
|
* None. |
474 |
|
|
* |
475 |
|
|
*---------------------------------------------------------------------- |
476 |
|
|
*/ |
477 |
|
|
|
478 |
|
|
char * |
479 |
|
|
Tk_NameOfImage(imageMaster) |
480 |
|
|
Tk_ImageMaster imageMaster; /* Token for image. */ |
481 |
|
|
{ |
482 |
|
|
ImageMaster *masterPtr = (ImageMaster *) imageMaster; |
483 |
|
|
|
484 |
|
|
return Tcl_GetHashKey(masterPtr->tablePtr, masterPtr->hPtr); |
485 |
|
|
} |
486 |
|
|
|
487 |
|
|
/* |
488 |
|
|
*---------------------------------------------------------------------- |
489 |
|
|
* |
490 |
|
|
* Tk_GetImage -- |
491 |
|
|
* |
492 |
|
|
* This procedure is invoked by a widget when it wants to use |
493 |
|
|
* a particular image in a particular window. |
494 |
|
|
* |
495 |
|
|
* Results: |
496 |
|
|
* The return value is a token for the image. If there is no image |
497 |
|
|
* by the given name, then NULL is returned and an error message is |
498 |
|
|
* left in the interp's result. |
499 |
|
|
* |
500 |
|
|
* Side effects: |
501 |
|
|
* Tk records the fact that the widget is using the image, and |
502 |
|
|
* it will invoke changeProc later if the widget needs redisplay |
503 |
|
|
* (i.e. its size changes or some of its pixels change). The |
504 |
|
|
* caller must eventually invoke Tk_FreeImage when it no longer |
505 |
|
|
* needs the image. |
506 |
|
|
* |
507 |
|
|
*---------------------------------------------------------------------- |
508 |
|
|
*/ |
509 |
|
|
|
510 |
|
|
Tk_Image |
511 |
|
|
Tk_GetImage(interp, tkwin, name, changeProc, clientData) |
512 |
|
|
Tcl_Interp *interp; /* Place to leave error message if image |
513 |
|
|
* can't be found. */ |
514 |
|
|
Tk_Window tkwin; /* Token for window in which image will |
515 |
|
|
* be used. */ |
516 |
|
|
char *name; /* Name of desired image. */ |
517 |
|
|
Tk_ImageChangedProc *changeProc; |
518 |
|
|
/* Procedure to invoke when redisplay is |
519 |
|
|
* needed because image's pixels or size |
520 |
|
|
* changed. */ |
521 |
|
|
ClientData clientData; /* One-word argument to pass to damageProc. */ |
522 |
|
|
{ |
523 |
|
|
Tcl_HashEntry *hPtr; |
524 |
|
|
ImageMaster *masterPtr; |
525 |
|
|
Image *imagePtr; |
526 |
|
|
|
527 |
|
|
hPtr = Tcl_FindHashEntry(&((TkWindow *) tkwin)->mainPtr->imageTable, name); |
528 |
|
|
if (hPtr == NULL) { |
529 |
|
|
goto noSuchImage; |
530 |
|
|
} |
531 |
|
|
masterPtr = (ImageMaster *) Tcl_GetHashValue(hPtr); |
532 |
|
|
if (masterPtr->typePtr == NULL) { |
533 |
|
|
goto noSuchImage; |
534 |
|
|
} |
535 |
|
|
imagePtr = (Image *) ckalloc(sizeof(Image)); |
536 |
|
|
imagePtr->tkwin = tkwin; |
537 |
|
|
imagePtr->display = Tk_Display(tkwin); |
538 |
|
|
imagePtr->masterPtr = masterPtr; |
539 |
|
|
imagePtr->instanceData = |
540 |
|
|
(*masterPtr->typePtr->getProc)(tkwin, masterPtr->masterData); |
541 |
|
|
imagePtr->changeProc = changeProc; |
542 |
|
|
imagePtr->widgetClientData = clientData; |
543 |
|
|
imagePtr->nextPtr = masterPtr->instancePtr; |
544 |
|
|
masterPtr->instancePtr = imagePtr; |
545 |
|
|
return (Tk_Image) imagePtr; |
546 |
|
|
|
547 |
|
|
noSuchImage: |
548 |
|
|
Tcl_AppendResult(interp, "image \"", name, "\" doesn't exist", |
549 |
|
|
(char *) NULL); |
550 |
|
|
return NULL; |
551 |
|
|
} |
552 |
|
|
|
553 |
|
|
/* |
554 |
|
|
*---------------------------------------------------------------------- |
555 |
|
|
* |
556 |
|
|
* Tk_FreeImage -- |
557 |
|
|
* |
558 |
|
|
* This procedure is invoked by a widget when it no longer needs |
559 |
|
|
* an image acquired by a previous call to Tk_GetImage. For each |
560 |
|
|
* call to Tk_GetImage there must be exactly one call to Tk_FreeImage. |
561 |
|
|
* |
562 |
|
|
* Results: |
563 |
|
|
* None. |
564 |
|
|
* |
565 |
|
|
* Side effects: |
566 |
|
|
* The association between the image and the widget is removed. |
567 |
|
|
* |
568 |
|
|
*---------------------------------------------------------------------- |
569 |
|
|
*/ |
570 |
|
|
|
571 |
|
|
void |
572 |
|
|
Tk_FreeImage(image) |
573 |
|
|
Tk_Image image; /* Token for image that is no longer |
574 |
|
|
* needed by a widget. */ |
575 |
|
|
{ |
576 |
|
|
Image *imagePtr = (Image *) image; |
577 |
|
|
ImageMaster *masterPtr = imagePtr->masterPtr; |
578 |
|
|
Image *prevPtr; |
579 |
|
|
|
580 |
|
|
/* |
581 |
|
|
* Clean up the particular instance. |
582 |
|
|
*/ |
583 |
|
|
|
584 |
|
|
if (masterPtr->typePtr != NULL) { |
585 |
|
|
(*masterPtr->typePtr->freeProc)(imagePtr->instanceData, |
586 |
|
|
imagePtr->display); |
587 |
|
|
} |
588 |
|
|
prevPtr = masterPtr->instancePtr; |
589 |
|
|
if (prevPtr == imagePtr) { |
590 |
|
|
masterPtr->instancePtr = imagePtr->nextPtr; |
591 |
|
|
} else { |
592 |
|
|
while (prevPtr->nextPtr != imagePtr) { |
593 |
|
|
prevPtr = prevPtr->nextPtr; |
594 |
|
|
} |
595 |
|
|
prevPtr->nextPtr = imagePtr->nextPtr; |
596 |
|
|
} |
597 |
|
|
ckfree((char *) imagePtr); |
598 |
|
|
|
599 |
|
|
/* |
600 |
|
|
* If there are no more instances left for the master, and if the |
601 |
|
|
* master image has been deleted, then delete the master too. |
602 |
|
|
*/ |
603 |
|
|
|
604 |
|
|
if ((masterPtr->typePtr == NULL) && (masterPtr->instancePtr == NULL)) { |
605 |
|
|
Tcl_DeleteHashEntry(masterPtr->hPtr); |
606 |
|
|
ckfree((char *) masterPtr); |
607 |
|
|
} |
608 |
|
|
} |
609 |
|
|
|
610 |
|
|
/* |
611 |
|
|
*---------------------------------------------------------------------- |
612 |
|
|
* |
613 |
|
|
* Tk_PostscriptImage -- |
614 |
|
|
* |
615 |
|
|
* This procedure is called by widgets that contain images in order |
616 |
|
|
* to redisplay an image on the screen or an off-screen pixmap. |
617 |
|
|
* |
618 |
|
|
* Results: |
619 |
|
|
* None. |
620 |
|
|
* |
621 |
|
|
* Side effects: |
622 |
|
|
* The image's manager is notified, and it redraws the desired |
623 |
|
|
* portion of the image before returning. |
624 |
|
|
* |
625 |
|
|
*---------------------------------------------------------------------- |
626 |
|
|
*/ |
627 |
|
|
|
628 |
|
|
int |
629 |
|
|
Tk_PostscriptImage(image, interp, tkwin, psinfo, x, y, width, height, prepass) |
630 |
|
|
Tk_Image image; /* Token for image to redisplay. */ |
631 |
|
|
Tcl_Interp *interp; |
632 |
|
|
Tk_Window tkwin; |
633 |
|
|
Tk_PostscriptInfo psinfo; /* postscript info */ |
634 |
|
|
int x, y; /* Upper-left pixel of region in image that |
635 |
|
|
* needs to be redisplayed. */ |
636 |
|
|
int width, height; /* Dimensions of region to redraw. */ |
637 |
|
|
int prepass; |
638 |
|
|
{ |
639 |
|
|
Image *imagePtr = (Image *) image; |
640 |
|
|
int result; |
641 |
|
|
XImage *ximage; |
642 |
|
|
Pixmap pmap; |
643 |
|
|
GC newGC; |
644 |
|
|
XGCValues gcValues; |
645 |
|
|
|
646 |
|
|
if (imagePtr->masterPtr->typePtr == NULL) { |
647 |
|
|
/* |
648 |
|
|
* No master for image, so nothing to display on postscript. |
649 |
|
|
*/ |
650 |
|
|
return TCL_OK; |
651 |
|
|
} |
652 |
|
|
|
653 |
|
|
/* |
654 |
|
|
* Check if an image specific postscript-generation function |
655 |
|
|
* exists; otherwise go on with generic code. |
656 |
|
|
*/ |
657 |
|
|
|
658 |
|
|
if (imagePtr->masterPtr->typePtr->postscriptProc != NULL) { |
659 |
|
|
return (*imagePtr->masterPtr->typePtr->postscriptProc)( |
660 |
|
|
imagePtr->masterPtr->masterData, interp, tkwin, psinfo, |
661 |
|
|
x, y, width, height, prepass); |
662 |
|
|
} |
663 |
|
|
|
664 |
|
|
if (prepass) { |
665 |
|
|
return TCL_OK; |
666 |
|
|
} |
667 |
|
|
|
668 |
|
|
/* |
669 |
|
|
* Create a Pixmap, tell the image to redraw itself there, and then |
670 |
|
|
* generate an XImage from the Pixmap. We can then read pixel |
671 |
|
|
* values out of the XImage. |
672 |
|
|
*/ |
673 |
|
|
|
674 |
|
|
pmap = Tk_GetPixmap(Tk_Display(tkwin), Tk_WindowId(tkwin), |
675 |
|
|
width, height, Tk_Depth(tkwin)); |
676 |
|
|
|
677 |
|
|
gcValues.foreground = WhitePixelOfScreen(Tk_Screen(tkwin)); |
678 |
|
|
newGC = Tk_GetGC(tkwin, GCForeground, &gcValues); |
679 |
|
|
if (newGC != None) { |
680 |
|
|
XFillRectangle(Tk_Display(tkwin), pmap, newGC, |
681 |
|
|
0, 0, (unsigned int)width, (unsigned int)height); |
682 |
|
|
Tk_FreeGC(Tk_Display(tkwin), newGC); |
683 |
|
|
} |
684 |
|
|
|
685 |
|
|
Tk_RedrawImage(image, x, y, width, height, pmap, 0, 0); |
686 |
|
|
|
687 |
|
|
ximage = XGetImage(Tk_Display(tkwin), pmap, 0, 0, |
688 |
|
|
(unsigned int)width, (unsigned int)height, AllPlanes, ZPixmap); |
689 |
|
|
|
690 |
|
|
Tk_FreePixmap(Tk_Display(tkwin), pmap); |
691 |
|
|
|
692 |
|
|
if (ximage == NULL) { |
693 |
|
|
/* The XGetImage() function is apparently not |
694 |
|
|
* implemented on this system. Just ignore it. |
695 |
|
|
*/ |
696 |
|
|
return TCL_OK; |
697 |
|
|
} |
698 |
|
|
result = TkPostscriptImage(interp, tkwin, psinfo, ximage, x, y, |
699 |
|
|
width, height); |
700 |
|
|
|
701 |
|
|
XDestroyImage(ximage); |
702 |
|
|
return result; |
703 |
|
|
} |
704 |
|
|
|
705 |
|
|
/* |
706 |
|
|
*---------------------------------------------------------------------- |
707 |
|
|
* |
708 |
|
|
* Tk_RedrawImage -- |
709 |
|
|
* |
710 |
|
|
* This procedure is called by widgets that contain images in order |
711 |
|
|
* to redisplay an image on the screen or an off-screen pixmap. |
712 |
|
|
* |
713 |
|
|
* Results: |
714 |
|
|
* None. |
715 |
|
|
* |
716 |
|
|
* Side effects: |
717 |
|
|
* The image's manager is notified, and it redraws the desired |
718 |
|
|
* portion of the image before returning. |
719 |
|
|
* |
720 |
|
|
*---------------------------------------------------------------------- |
721 |
|
|
*/ |
722 |
|
|
|
723 |
|
|
void |
724 |
|
|
Tk_RedrawImage(image, imageX, imageY, width, height, drawable, |
725 |
|
|
drawableX, drawableY) |
726 |
|
|
Tk_Image image; /* Token for image to redisplay. */ |
727 |
|
|
int imageX, imageY; /* Upper-left pixel of region in image that |
728 |
|
|
* needs to be redisplayed. */ |
729 |
|
|
int width, height; /* Dimensions of region to redraw. */ |
730 |
|
|
Drawable drawable; /* Drawable in which to display image |
731 |
|
|
* (window or pixmap). If this is a pixmap, |
732 |
|
|
* it must have the same depth as the window |
733 |
|
|
* used in the Tk_GetImage call for the |
734 |
|
|
* image. */ |
735 |
|
|
int drawableX, drawableY; /* Coordinates in drawable that correspond |
736 |
|
|
* to imageX and imageY. */ |
737 |
|
|
{ |
738 |
|
|
Image *imagePtr = (Image *) image; |
739 |
|
|
|
740 |
|
|
if (imagePtr->masterPtr->typePtr == NULL) { |
741 |
|
|
/* |
742 |
|
|
* No master for image, so nothing to display. |
743 |
|
|
*/ |
744 |
|
|
|
745 |
|
|
return; |
746 |
|
|
} |
747 |
|
|
|
748 |
|
|
/* |
749 |
|
|
* Clip the redraw area to the area of the image. |
750 |
|
|
*/ |
751 |
|
|
|
752 |
|
|
if (imageX < 0) { |
753 |
|
|
width += imageX; |
754 |
|
|
drawableX -= imageX; |
755 |
|
|
imageX = 0; |
756 |
|
|
} |
757 |
|
|
if (imageY < 0) { |
758 |
|
|
height += imageY; |
759 |
|
|
drawableY -= imageY; |
760 |
|
|
imageY = 0; |
761 |
|
|
} |
762 |
|
|
if ((imageX + width) > imagePtr->masterPtr->width) { |
763 |
|
|
width = imagePtr->masterPtr->width - imageX; |
764 |
|
|
} |
765 |
|
|
if ((imageY + height) > imagePtr->masterPtr->height) { |
766 |
|
|
height = imagePtr->masterPtr->height - imageY; |
767 |
|
|
} |
768 |
|
|
(*imagePtr->masterPtr->typePtr->displayProc)( |
769 |
|
|
imagePtr->instanceData, imagePtr->display, drawable, |
770 |
|
|
imageX, imageY, width, height, drawableX, drawableY); |
771 |
|
|
} |
772 |
|
|
|
773 |
|
|
/* |
774 |
|
|
*---------------------------------------------------------------------- |
775 |
|
|
* |
776 |
|
|
* Tk_SizeOfImage -- |
777 |
|
|
* |
778 |
|
|
* This procedure returns the current dimensions of an image. |
779 |
|
|
* |
780 |
|
|
* Results: |
781 |
|
|
* The width and height of the image are returned in *widthPtr |
782 |
|
|
* and *heightPtr. |
783 |
|
|
* |
784 |
|
|
* Side effects: |
785 |
|
|
* None. |
786 |
|
|
* |
787 |
|
|
*---------------------------------------------------------------------- |
788 |
|
|
*/ |
789 |
|
|
|
790 |
|
|
void |
791 |
|
|
Tk_SizeOfImage(image, widthPtr, heightPtr) |
792 |
|
|
Tk_Image image; /* Token for image whose size is wanted. */ |
793 |
|
|
int *widthPtr; /* Return width of image here. */ |
794 |
|
|
int *heightPtr; /* Return height of image here. */ |
795 |
|
|
{ |
796 |
|
|
Image *imagePtr = (Image *) image; |
797 |
|
|
|
798 |
|
|
*widthPtr = imagePtr->masterPtr->width; |
799 |
|
|
*heightPtr = imagePtr->masterPtr->height; |
800 |
|
|
} |
801 |
|
|
|
802 |
|
|
/* |
803 |
|
|
*---------------------------------------------------------------------- |
804 |
|
|
* |
805 |
|
|
* Tk_DeleteImage -- |
806 |
|
|
* |
807 |
|
|
* Given the name of an image, this procedure destroys the |
808 |
|
|
* image. |
809 |
|
|
* |
810 |
|
|
* Results: |
811 |
|
|
* None. |
812 |
|
|
* |
813 |
|
|
* Side effects: |
814 |
|
|
* The image is destroyed; existing instances will display as |
815 |
|
|
* blank areas. If no such image exists then the procedure does |
816 |
|
|
* nothing. |
817 |
|
|
* |
818 |
|
|
*---------------------------------------------------------------------- |
819 |
|
|
*/ |
820 |
|
|
|
821 |
|
|
void |
822 |
|
|
Tk_DeleteImage(interp, name) |
823 |
|
|
Tcl_Interp *interp; /* Interpreter in which the image was |
824 |
|
|
* created. */ |
825 |
|
|
char *name; /* Name of image. */ |
826 |
|
|
{ |
827 |
|
|
Tcl_HashEntry *hPtr; |
828 |
|
|
TkWindow *winPtr; |
829 |
|
|
|
830 |
|
|
winPtr = (TkWindow *) Tk_MainWindow(interp); |
831 |
|
|
if (winPtr == NULL) { |
832 |
|
|
return; |
833 |
|
|
} |
834 |
|
|
hPtr = Tcl_FindHashEntry(&winPtr->mainPtr->imageTable, name); |
835 |
|
|
if (hPtr == NULL) { |
836 |
|
|
return; |
837 |
|
|
} |
838 |
|
|
DeleteImage((ImageMaster *) Tcl_GetHashValue(hPtr)); |
839 |
|
|
} |
840 |
|
|
|
841 |
|
|
/* |
842 |
|
|
*---------------------------------------------------------------------- |
843 |
|
|
* |
844 |
|
|
* DeleteImage -- |
845 |
|
|
* |
846 |
|
|
* This procedure is responsible for deleting an image. |
847 |
|
|
* |
848 |
|
|
* Results: |
849 |
|
|
* None. |
850 |
|
|
* |
851 |
|
|
* Side effects: |
852 |
|
|
* The connection is dropped between instances of this image and |
853 |
|
|
* an image master. Image instances will redisplay themselves |
854 |
|
|
* as empty areas, but existing instances will not be deleted. |
855 |
|
|
* |
856 |
|
|
*---------------------------------------------------------------------- |
857 |
|
|
*/ |
858 |
|
|
|
859 |
|
|
static void |
860 |
|
|
DeleteImage(masterPtr) |
861 |
|
|
ImageMaster *masterPtr; /* Pointer to main data structure for image. */ |
862 |
|
|
{ |
863 |
|
|
Image *imagePtr; |
864 |
|
|
Tk_ImageType *typePtr; |
865 |
|
|
|
866 |
|
|
typePtr = masterPtr->typePtr; |
867 |
|
|
masterPtr->typePtr = NULL; |
868 |
|
|
if (typePtr != NULL) { |
869 |
|
|
for (imagePtr = masterPtr->instancePtr; imagePtr != NULL; |
870 |
|
|
imagePtr = imagePtr->nextPtr) { |
871 |
|
|
(*typePtr->freeProc)(imagePtr->instanceData, |
872 |
|
|
imagePtr->display); |
873 |
|
|
(*imagePtr->changeProc)(imagePtr->widgetClientData, 0, 0, |
874 |
|
|
masterPtr->width, masterPtr->height, masterPtr->width, |
875 |
|
|
masterPtr->height); |
876 |
|
|
} |
877 |
|
|
(*typePtr->deleteProc)(masterPtr->masterData); |
878 |
|
|
} |
879 |
|
|
if (masterPtr->instancePtr == NULL) { |
880 |
|
|
Tcl_DeleteHashEntry(masterPtr->hPtr); |
881 |
|
|
ckfree((char *) masterPtr); |
882 |
|
|
} |
883 |
|
|
} |
884 |
|
|
|
885 |
|
|
/* |
886 |
|
|
*---------------------------------------------------------------------- |
887 |
|
|
* |
888 |
|
|
* TkDeleteAllImages -- |
889 |
|
|
* |
890 |
|
|
* This procedure is called when an application is deleted. It |
891 |
|
|
* calls back all of the managers for all images so that they |
892 |
|
|
* can cleanup, then it deletes all of Tk's internal information |
893 |
|
|
* about images. |
894 |
|
|
* |
895 |
|
|
* Results: |
896 |
|
|
* None. |
897 |
|
|
* |
898 |
|
|
* Side effects: |
899 |
|
|
* All information for all images gets deleted. |
900 |
|
|
* |
901 |
|
|
*---------------------------------------------------------------------- |
902 |
|
|
*/ |
903 |
|
|
|
904 |
|
|
void |
905 |
|
|
TkDeleteAllImages(mainPtr) |
906 |
|
|
TkMainInfo *mainPtr; /* Structure describing application that is |
907 |
|
|
* going away. */ |
908 |
|
|
{ |
909 |
|
|
Tcl_HashSearch search; |
910 |
|
|
Tcl_HashEntry *hPtr; |
911 |
|
|
ImageMaster *masterPtr; |
912 |
|
|
|
913 |
|
|
for (hPtr = Tcl_FirstHashEntry(&mainPtr->imageTable, &search); |
914 |
|
|
hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { |
915 |
|
|
masterPtr = (ImageMaster *) Tcl_GetHashValue(hPtr); |
916 |
|
|
DeleteImage(masterPtr); |
917 |
|
|
} |
918 |
|
|
Tcl_DeleteHashTable(&mainPtr->imageTable); |
919 |
|
|
} |
920 |
|
|
|
921 |
|
|
/* |
922 |
|
|
*---------------------------------------------------------------------- |
923 |
|
|
* |
924 |
|
|
* Tk_GetImageMasterData -- |
925 |
|
|
* |
926 |
|
|
* Given the name of an image, this procedure returns the type |
927 |
|
|
* of the image and the clientData associated with its master. |
928 |
|
|
* |
929 |
|
|
* Results: |
930 |
|
|
* If there is no image by the given name, then NULL is returned |
931 |
|
|
* and a NULL value is stored at *typePtrPtr. Otherwise the return |
932 |
|
|
* value is the clientData returned by the createProc when the |
933 |
|
|
* image was created and a pointer to the type structure for the |
934 |
|
|
* image is stored at *typePtrPtr. |
935 |
|
|
* |
936 |
|
|
* Side effects: |
937 |
|
|
* None. |
938 |
|
|
* |
939 |
|
|
*---------------------------------------------------------------------- |
940 |
|
|
*/ |
941 |
|
|
|
942 |
|
|
ClientData |
943 |
|
|
Tk_GetImageMasterData(interp, name, typePtrPtr) |
944 |
|
|
Tcl_Interp *interp; /* Interpreter in which the image was |
945 |
|
|
* created. */ |
946 |
|
|
char *name; /* Name of image. */ |
947 |
|
|
Tk_ImageType **typePtrPtr; /* Points to location to fill in with |
948 |
|
|
* pointer to type information for image. */ |
949 |
|
|
{ |
950 |
|
|
Tcl_HashEntry *hPtr; |
951 |
|
|
TkWindow *winPtr; |
952 |
|
|
ImageMaster *masterPtr; |
953 |
|
|
|
954 |
|
|
winPtr = (TkWindow *) Tk_MainWindow(interp); |
955 |
|
|
hPtr = Tcl_FindHashEntry(&winPtr->mainPtr->imageTable, name); |
956 |
|
|
if (hPtr == NULL) { |
957 |
|
|
*typePtrPtr = NULL; |
958 |
|
|
return NULL; |
959 |
|
|
} |
960 |
|
|
masterPtr = (ImageMaster *) Tcl_GetHashValue(hPtr); |
961 |
|
|
*typePtrPtr = masterPtr->typePtr; |
962 |
|
|
return masterPtr->masterData; |
963 |
|
|
} |
964 |
|
|
|
965 |
|
|
/* |
966 |
|
|
*---------------------------------------------------------------------- |
967 |
|
|
* |
968 |
|
|
* Tk_SetTSOrigin -- |
969 |
|
|
* |
970 |
|
|
* Set the pattern origin of the tile to a common point (i.e. the |
971 |
|
|
* origin (0,0) of the top level window) so that tiles from two |
972 |
|
|
* different widgets will match up. This done by setting the |
973 |
|
|
* GCTileStipOrigin field is set to the translated origin of the |
974 |
|
|
* toplevel window in the hierarchy. |
975 |
|
|
* |
976 |
|
|
* Results: |
977 |
|
|
* None. |
978 |
|
|
* |
979 |
|
|
* Side Effects: |
980 |
|
|
* The GCTileStipOrigin is reset in the GC. This will cause the |
981 |
|
|
* tile origin to change when the GC is used for drawing. |
982 |
|
|
* |
983 |
|
|
*---------------------------------------------------------------------- |
984 |
|
|
*/ |
985 |
|
|
/*ARGSUSED*/ |
986 |
|
|
void |
987 |
|
|
Tk_SetTSOrigin(tkwin, gc, x, y) |
988 |
|
|
Tk_Window tkwin; |
989 |
|
|
GC gc; |
990 |
|
|
int x, y; |
991 |
|
|
{ |
992 |
|
|
while (!Tk_IsTopLevel(tkwin)) { |
993 |
|
|
x -= Tk_X(tkwin) + Tk_Changes(tkwin)->border_width; |
994 |
|
|
y -= Tk_Y(tkwin) + Tk_Changes(tkwin)->border_width; |
995 |
|
|
tkwin = Tk_Parent(tkwin); |
996 |
|
|
} |
997 |
|
|
XSetTSOrigin(Tk_Display(tkwin), gc, x, y); |
998 |
|
|
} |
999 |
|
|
|
1000 |
|
|
/* End of tkimage.c */ |