File: | multiVis.c |
Location: | line 591, column 34 |
Description: | Dereference of null pointer |
1 | /** ------------------------------------------------------------------------ | |||||
2 | This file contains functions to create a list of regions which | |||||
3 | tile a specified window. Each region contains all visible | |||||
4 | portions of the window which are drawn with the same visual. | |||||
5 | If the window consists of subwindows of two different visual types, | |||||
6 | there will be two regions in the list. The list can be traversed | |||||
7 | to correctly pull an image of the window using XGetImage or the | |||||
8 | Image Library. | |||||
9 | ||||||
10 | Copyright 1994 Hewlett-Packard Co. | |||||
11 | Copyright 1996, 1998 The Open Group | |||||
12 | ||||||
13 | Permission to use, copy, modify, distribute, and sell this software and its | |||||
14 | documentation for any purpose is hereby granted without fee, provided that | |||||
15 | the above copyright notice appear in all copies and that both that | |||||
16 | copyright notice and this permission notice appear in supporting | |||||
17 | documentation. | |||||
18 | ||||||
19 | The above copyright notice and this permission notice shall be included | |||||
20 | in all copies or substantial portions of the Software. | |||||
21 | ||||||
22 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |||||
23 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |||||
24 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |||||
25 | IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR | |||||
26 | OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |||||
27 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |||||
28 | OTHER DEALINGS IN THE SOFTWARE. | |||||
29 | ||||||
30 | Except as contained in this notice, the name of The Open Group shall | |||||
31 | not be used in advertising or otherwise to promote the sale, use or | |||||
32 | other dealings in this Software without prior written authorization | |||||
33 | from The Open Group. | |||||
34 | ||||||
35 | ------------------------------------------------------------------------ **/ | |||||
36 | ||||||
37 | #include <stdlib.h> | |||||
38 | #include <X11/Xlib.h> | |||||
39 | #include <X11/Xutil.h> | |||||
40 | #include <X11/X.h> | |||||
41 | #include <stdio.h> | |||||
42 | #include "list.h" | |||||
43 | #include "wsutils.h" | |||||
44 | #include "multiVis.h" | |||||
45 | /* These structures are copied from X11/region.h. For some reason | |||||
46 | * they're invisible from the outside. | |||||
47 | */ | |||||
48 | typedef struct { | |||||
49 | short x1, x2, y1, y2; | |||||
50 | } myBox, myBOX, myBoxRec, *myBoxPtr; | |||||
51 | ||||||
52 | typedef struct my_XRegion { | |||||
53 | long size; | |||||
54 | long numRects; | |||||
55 | myBOX *rects; | |||||
56 | myBOX extents; | |||||
57 | } myREGION; | |||||
58 | ||||||
59 | /* Items in long list of windows that have some part in the grabbed area */ | |||||
60 | typedef struct { | |||||
61 | Window win; | |||||
62 | Visual *vis; | |||||
63 | Colormap cmap; | |||||
64 | int x_rootrel, y_rootrel; /* root relative location of window */ | |||||
65 | int x_vis, y_vis; /* rt rel x,y of vis part, not parent clipped */ | |||||
66 | int width, height; /* width and height of visible part */ | |||||
67 | int border_width; /* border width of the window */ | |||||
68 | Window parent; /* id of parent (for debugging) */ | |||||
69 | } image_win_type; | |||||
70 | ||||||
71 | /* Items in short list of regions that tile the grabbed area. May have | |||||
72 | multiple windows in the region. | |||||
73 | */ | |||||
74 | typedef struct { | |||||
75 | Window win; /* lowest window of this visual */ | |||||
76 | Visual *vis; | |||||
77 | Colormap cmap; | |||||
78 | int x_rootrel, y_rootrel; /* root relative location of bottom window */ | |||||
79 | int x_vis, y_vis; /* rt rel x,y of vis part, not parent clipped */ | |||||
80 | int width, height; /* w & h of visible rect of bottom window */ | |||||
81 | int border; /* border width of the window */ | |||||
82 | Region visible_region; | |||||
83 | } image_region_type; | |||||
84 | ||||||
85 | /** ------------------------------------------------------------------------ | |||||
86 | Returns TRUE if the two structs pointed to have the same "vis" & | |||||
87 | "cmap" fields and s2 lies completely within s1. s1 and s2 can | |||||
88 | point to structs of image_win_type or image_region_type. | |||||
89 | ------------------------------------------------------------------------ **/ | |||||
90 | #define SAME_REGIONS( s1, s2)((s1)->vis == (s2)->vis && (s1)->cmap == (s2 )->cmap && (s1)->x_vis <= (s2)->x_vis && (s1)->y_vis <= (s2)->y_vis && (s1)->x_vis + (s1)->width >= (s2)->x_vis + (s2)->width && (s1)->y_vis + (s1)->height >= (s2)->y_vis + (s2) ->height) \ | |||||
91 | ((s1)->vis == (s2)->vis && (s1)->cmap == (s2)->cmap && \ | |||||
92 | (s1)->x_vis <= (s2)->x_vis && \ | |||||
93 | (s1)->y_vis <= (s2)->y_vis && \ | |||||
94 | (s1)->x_vis + (s1)->width >= (s2)->x_vis + (s2)->width && \ | |||||
95 | (s1)->y_vis + (s1)->height >= (s2)->y_vis + (s2)->height) | |||||
96 | ||||||
97 | #ifndef MIN | |||||
98 | #define MIN( a, b)((a) < (b) ? a : b) ((a) < (b) ? a : b) | |||||
99 | #define MAX( a, b)((a) > (b) ? a : b) ((a) > (b) ? a : b) | |||||
100 | #endif | |||||
101 | ||||||
102 | #define RED_SHIFT16 16 | |||||
103 | #define GREEN_SHIFT8 8 | |||||
104 | #define BLUE_SHIFT0 0 | |||||
105 | ||||||
106 | /* | |||||
107 | extern list_ptr new_list(); | |||||
108 | extern list_ptr dup_list_head(); | |||||
109 | extern void * first_in_list(); | |||||
110 | extern void * next_in_list(); | |||||
111 | extern int add_to_list(); | |||||
112 | extern void zero_list(); | |||||
113 | extern void delete_list(); | |||||
114 | extern void delete_list_destroying(); | |||||
115 | extern unsigned int list_length(); | |||||
116 | */ | |||||
117 | ||||||
118 | /* Prototype Declarations for Static Functions */ | |||||
119 | static void QueryColorMap( | |||||
120 | Display *, Colormap , Visual *, | |||||
121 | XColor **, int *, int *, int * | |||||
122 | ); | |||||
123 | static void TransferImage( | |||||
124 | Display *, XImage *,int, int , image_region_type*, | |||||
125 | XImage *,int ,int | |||||
126 | ); | |||||
127 | static XImage * ReadRegionsInList( | |||||
128 | Display *, Visual *, int, int, unsigned int, | |||||
129 | unsigned int, XRectangle, list_ptr | |||||
130 | ); | |||||
131 | ||||||
132 | static list_ptr make_region_list( | |||||
133 | Display*, Window, XRectangle*, | |||||
134 | int*, int, XVisualInfo**, int * | |||||
135 | ); | |||||
136 | ||||||
137 | static void destroy_region_list( | |||||
138 | list_ptr | |||||
139 | ) ; | |||||
140 | static void subtr_rect_from_image_region( | |||||
141 | image_region_type *, int , int , int , int | |||||
142 | ); | |||||
143 | static void add_rect_to_image_region( | |||||
144 | image_region_type *, | |||||
145 | int , int , int , int | |||||
146 | ); | |||||
147 | static int src_in_region_list( | |||||
148 | image_win_type *, list_ptr | |||||
149 | ); | |||||
150 | static void add_window_to_list( | |||||
151 | list_ptr, Window, int, int , | |||||
152 | int , int , int , int, int, | |||||
153 | Visual*, Colormap, Window | |||||
154 | ); | |||||
155 | static int src_in_image( | |||||
156 | image_win_type *, int , XVisualInfo** | |||||
157 | ); | |||||
158 | static int src_in_overlay( | |||||
159 | image_region_type *, int, OverlayInfo *, int*, int* | |||||
160 | ); | |||||
161 | static void make_src_list( | |||||
162 | Display *, list_ptr, XRectangle *, Window, | |||||
163 | int, int, XWindowAttributes *, XRectangle * | |||||
164 | ); | |||||
165 | static void destroy_image_region( | |||||
166 | image_region_type * | |||||
167 | ); | |||||
168 | ||||||
169 | /* End of Prototype Declarations */ | |||||
170 | ||||||
171 | void initFakeVisual(Visual *Vis) | |||||
172 | { | |||||
173 | Vis->ext_data=NULL((void*)0); | |||||
174 | Vis->class = DirectColor5 ; | |||||
175 | Vis->red_mask = 0x00FF0000; | |||||
176 | Vis->green_mask = 0x0000FF00 ; | |||||
177 | Vis->blue_mask = 0x000000FF ; | |||||
178 | Vis->map_entries = 256 ; | |||||
179 | Vis->bits_per_rgb = 8 ; | |||||
180 | } | |||||
181 | ||||||
182 | static void | |||||
183 | QueryColorMap(Display *disp, Colormap src_cmap, Visual *src_vis, | |||||
184 | XColor **src_colors, int *rShift, int *gShift, int *bShift) | |||||
185 | { | |||||
186 | unsigned int ncolors,i ; | |||||
187 | unsigned long redMask, greenMask, blueMask; | |||||
188 | int redShift, greenShift, blueShift; | |||||
189 | XColor *colors ; | |||||
190 | ||||||
191 | ncolors = (unsigned) src_vis->map_entries ; | |||||
192 | *src_colors = colors = (XColor *)malloc(ncolors * sizeof(XColor) ) ; | |||||
193 | ||||||
194 | if(src_vis->class != TrueColor4 && src_vis->class != DirectColor5) | |||||
195 | { | |||||
196 | for(i=0 ; i < ncolors ; i++) | |||||
197 | { | |||||
198 | colors[i].pixel = i ; | |||||
199 | colors[i].pad = 0; | |||||
200 | colors[i].flags = DoRed(1<<0)|DoGreen(1<<1)|DoBlue(1<<2); | |||||
201 | } | |||||
202 | } | |||||
203 | else /** src is decomposed rgb ***/ | |||||
204 | { | |||||
205 | /* Get the X colormap */ | |||||
206 | redMask = src_vis->red_mask; | |||||
207 | greenMask = src_vis->green_mask; | |||||
208 | blueMask = src_vis->blue_mask; | |||||
209 | redShift = 0; while (!(redMask&0x1)) { | |||||
210 | redShift++; | |||||
211 | redMask = redMask>>1; | |||||
212 | } | |||||
213 | greenShift = 0; while (!(greenMask&0x1)) { | |||||
214 | greenShift++; | |||||
215 | greenMask = greenMask>>1; | |||||
216 | } | |||||
217 | blueShift = 0; while (!(blueMask&0x1)) { | |||||
218 | blueShift++; | |||||
219 | blueMask = blueMask>>1; | |||||
220 | } | |||||
221 | *rShift = redShift ; | |||||
222 | *gShift = greenShift ; | |||||
223 | *bShift = blueShift ; | |||||
224 | for (i=0; i<ncolors; i++) { | |||||
225 | if( i <= redMask)colors[i].pixel = (i<<redShift) ; | |||||
226 | if( i <= greenMask)colors[i].pixel |= (i<<greenShift) ; | |||||
227 | if( i <= blueMask)colors[i].pixel |= (i<<blueShift) ; | |||||
228 | /***** example :for gecko's 3-3-2 map, blue index should be <= 3. | |||||
229 | colors[i].pixel = (i<<redShift)|(i<<greenShift)|(i<<blueShift); | |||||
230 | *****/ | |||||
231 | colors[i].pad = 0; | |||||
232 | colors[i].flags = DoRed(1<<0)|DoGreen(1<<1)|DoBlue(1<<2); | |||||
233 | } | |||||
234 | } | |||||
235 | ||||||
236 | XQueryColors(disp, src_cmap, colors, (int) ncolors); | |||||
237 | } | |||||
238 | ||||||
239 | int | |||||
240 | GetMultiVisualRegions(Display *disp, | |||||
241 | /* root win on which grab was done */ | |||||
242 | Window srcRootWinid, | |||||
243 | /* root rel UL corner of bounding box of grab */ | |||||
244 | int x, int y, | |||||
245 | /* size of bounding box of grab */ | |||||
246 | unsigned int width, unsigned int height, | |||||
247 | int *transparentOverlays, int *numVisuals, | |||||
248 | XVisualInfo **pVisuals, int *numOverlayVisuals, | |||||
249 | OverlayInfo **pOverlayVisuals, | |||||
250 | int *numImageVisuals, XVisualInfo ***pImageVisuals, | |||||
251 | /* list of regions to read from */ | |||||
252 | list_ptr *vis_regions, | |||||
253 | list_ptr *vis_image_regions, int *allImage) | |||||
254 | { | |||||
255 | int hasNonDefault; | |||||
256 | XRectangle bbox; /* bounding box of grabbed area */ | |||||
257 | ||||||
258 | ||||||
259 | bbox.x = x; /* init X rect for bounding box */ | |||||
260 | bbox.y = y; | |||||
261 | bbox.width = width; | |||||
262 | bbox.height = height; | |||||
263 | ||||||
264 | GetXVisualInfo(disp,DefaultScreen(disp)(((_XPrivDisplay)(disp))->default_screen), | |||||
265 | transparentOverlays, | |||||
266 | numVisuals, pVisuals, | |||||
267 | numOverlayVisuals, pOverlayVisuals, | |||||
268 | numImageVisuals, pImageVisuals); | |||||
269 | ||||||
270 | *vis_regions = *vis_image_regions = NULL((void*)0) ; | |||||
271 | if ((*vis_regions = make_region_list( disp, srcRootWinid, &bbox, | |||||
272 | &hasNonDefault, *numImageVisuals, | |||||
273 | *pImageVisuals, allImage)) == NULL((void*)0)) | |||||
274 | return 0 ; | |||||
275 | ||||||
276 | if (*transparentOverlays) | |||||
277 | { | |||||
278 | *allImage = 1; /* until proven otherwise, | |||||
279 | this flags that it to be an image only list */ | |||||
280 | *vis_image_regions = | |||||
281 | make_region_list( disp, srcRootWinid, &bbox, &hasNonDefault, | |||||
282 | *numImageVisuals, *pImageVisuals, allImage); | |||||
283 | } | |||||
284 | ||||||
285 | /* if there is a second region in any of the two lists return 1 **/ | |||||
286 | if ( ( *vis_regions && (*vis_regions)->next && (*vis_regions)->next->next ) || | |||||
287 | ( *vis_image_regions && (*vis_image_regions)->next && | |||||
288 | (*vis_image_regions)->next->next ) ) return 1 ; | |||||
289 | else return 0 ; | |||||
290 | ||||||
291 | } | |||||
292 | ||||||
293 | static void TransferImage(Display *disp, XImage *reg_image, | |||||
294 | int srcw, int srch, | |||||
295 | image_region_type *reg, XImage *target_image, | |||||
296 | int dst_x, int dst_y) | |||||
297 | { | |||||
298 | int i,j,old_pixel,new_pixel,red_ind,green_ind,blue_ind ; | |||||
299 | XColor *colors; | |||||
300 | int rShift = 0, gShift = 0, bShift = 0; | |||||
301 | ||||||
302 | QueryColorMap(disp,reg->cmap,reg->vis,&colors, | |||||
303 | &rShift,&gShift,&bShift) ; | |||||
304 | ||||||
305 | switch (reg->vis->class) { | |||||
306 | case TrueColor4 : | |||||
307 | for(i=0 ; i < srch ; i++) | |||||
308 | { | |||||
309 | for(j=0 ; j < srcw ; j++) | |||||
310 | { | |||||
311 | old_pixel = XGetPixel(reg_image,j,i)((*((reg_image)->f.get_pixel))((reg_image), (j), (i))) ; | |||||
312 | ||||||
313 | if( reg->vis->map_entries == 16) { | |||||
314 | ||||||
315 | red_ind = (old_pixel & reg->vis->red_mask) >> rShift ; | |||||
316 | green_ind = (old_pixel & reg->vis->green_mask) >> gShift ; | |||||
317 | blue_ind = (old_pixel & reg->vis->blue_mask) >> bShift ; | |||||
318 | ||||||
319 | new_pixel = ( | |||||
320 | ((colors[red_ind].red >> 8) << RED_SHIFT16) | |||||
321 | |((colors[green_ind].green >> 8) << GREEN_SHIFT8) | |||||
322 | |((colors[blue_ind].blue >> 8) << BLUE_SHIFT0) | |||||
323 | ); | |||||
324 | } | |||||
325 | else | |||||
326 | new_pixel = old_pixel; | |||||
327 | ||||||
328 | XPutPixel(target_image,dst_x+j, dst_y+i,new_pixel)((*((target_image)->f.put_pixel))((target_image), (dst_x+j ), (dst_y+i), (new_pixel))); | |||||
329 | ||||||
330 | } | |||||
331 | } | |||||
332 | break; | |||||
333 | case DirectColor5 : | |||||
334 | for(i=0 ; i < srch ; i++) | |||||
335 | { | |||||
336 | ||||||
337 | for(j=0 ; j < srcw ; j++) | |||||
338 | { | |||||
339 | old_pixel = XGetPixel(reg_image,j,i)((*((reg_image)->f.get_pixel))((reg_image), (j), (i))) ; | |||||
340 | red_ind = (old_pixel & reg->vis->red_mask) >> rShift ; | |||||
341 | green_ind = (old_pixel & reg->vis->green_mask) >> gShift ; | |||||
342 | blue_ind = (old_pixel & reg->vis->blue_mask) >> bShift ; | |||||
343 | ||||||
344 | new_pixel = ( | |||||
345 | ((colors[red_ind].red >> 8) << RED_SHIFT16) | |||||
346 | |((colors[green_ind].green >> 8) << GREEN_SHIFT8) | |||||
347 | |((colors[blue_ind].blue >> 8) << BLUE_SHIFT0) | |||||
348 | ); | |||||
349 | XPutPixel(target_image,dst_x+j, dst_y+i,new_pixel)((*((target_image)->f.put_pixel))((target_image), (dst_x+j ), (dst_y+i), (new_pixel))); | |||||
350 | ||||||
351 | } | |||||
352 | } | |||||
353 | break; | |||||
354 | default : | |||||
355 | for(i=0 ; i < srch ; i++) | |||||
356 | { | |||||
357 | for(j=0 ; j < srcw ; j++) | |||||
358 | { | |||||
359 | old_pixel = XGetPixel(reg_image,j,i)((*((reg_image)->f.get_pixel))((reg_image), (j), (i))) ; | |||||
360 | ||||||
361 | new_pixel = ( | |||||
362 | ((colors[old_pixel].red >> 8) << RED_SHIFT16) | |||||
363 | |((colors[old_pixel].green >> 8) << GREEN_SHIFT8) | |||||
364 | |((colors[old_pixel].blue >> 8) << BLUE_SHIFT0) | |||||
365 | ); | |||||
366 | XPutPixel(target_image,dst_x+j, dst_y+i,new_pixel)((*((target_image)->f.put_pixel))((target_image), (dst_x+j ), (dst_y+i), (new_pixel))); | |||||
367 | ||||||
368 | } | |||||
369 | } | |||||
370 | break; | |||||
371 | } | |||||
372 | } | |||||
373 | ||||||
374 | static XImage * | |||||
375 | ReadRegionsInList(Display *disp, Visual *fakeVis, int depth, int format, | |||||
376 | unsigned int width, unsigned int height, | |||||
377 | XRectangle bbox, /* bounding box of grabbed area */ | |||||
378 | list_ptr regions) /* list of regions to read from */ | |||||
379 | { | |||||
380 | image_region_type *reg; | |||||
381 | int dst_x, dst_y; /* where in pixmap to write (UL) */ | |||||
382 | int diff; | |||||
383 | ||||||
384 | XImage *reg_image,*ximage ; | |||||
385 | int srcRect_x,srcRect_y,srcRect_width,srcRect_height ; | |||||
386 | int bytes_per_line; | |||||
387 | ||||||
388 | ximage = XCreateImage(disp,fakeVis,depth,format,0,NULL((void*)0),width,height, | |||||
389 | 8,0) ; | |||||
390 | bytes_per_line = ximage->bytes_per_line; | |||||
391 | ||||||
392 | if (format == ZPixmap2) | |||||
393 | ximage->data = malloc(height*bytes_per_line); | |||||
394 | else | |||||
395 | ximage->data = malloc(height*bytes_per_line*depth); | |||||
396 | ||||||
397 | ximage->bits_per_pixel = depth; /** Valid only if format is ZPixmap ***/ | |||||
398 | ||||||
399 | for (reg = (image_region_type *) first_in_list( regions); reg; | |||||
400 | reg = (image_region_type *) next_in_list( regions)) | |||||
401 | { | |||||
402 | int rect; | |||||
403 | struct my_XRegion *vis_reg; | |||||
404 | vis_reg = (struct my_XRegion *)(reg->visible_region); | |||||
405 | for (rect = 0; | |||||
406 | rect < vis_reg->numRects; | |||||
407 | rect++) | |||||
408 | { | |||||
409 | /** ------------------------------------------------------------------------ | |||||
410 | Intersect bbox with visible part of region giving src rect & output | |||||
411 | location. Width is the min right side minus the max left side. | |||||
412 | Similar for height. Offset src rect so x,y are relative to | |||||
413 | origin of win, not the root-relative visible rect of win. | |||||
414 | ------------------------------------------------------------------------ **/ | |||||
415 | srcRect_width = MIN( vis_reg->rects[rect].x2, bbox.width + bbox.x)((vis_reg->rects[rect].x2) < (bbox.width + bbox.x) ? vis_reg ->rects[rect].x2 : bbox.width + bbox.x) - | |||||
416 | MAX( vis_reg->rects[rect].x1, bbox.x)((vis_reg->rects[rect].x1) > (bbox.x) ? vis_reg->rects [rect].x1 : bbox.x); | |||||
417 | srcRect_height = MIN( vis_reg->rects[rect].y2, bbox.height + bbox.y)((vis_reg->rects[rect].y2) < (bbox.height + bbox.y) ? vis_reg ->rects[rect].y2 : bbox.height + bbox.y) - | |||||
418 | MAX( vis_reg->rects[rect].y1, bbox.y)((vis_reg->rects[rect].y1) > (bbox.y) ? vis_reg->rects [rect].y1 : bbox.y); | |||||
419 | diff = bbox.x - vis_reg->rects[rect].x1; | |||||
420 | srcRect_x = MAX( 0, diff)((0) > (diff) ? 0 : diff) + (vis_reg->rects[rect].x1 - reg->x_rootrel - reg->border); | |||||
421 | dst_x = MAX( 0, -diff)((0) > (-diff) ? 0 : -diff) ; | |||||
422 | diff = bbox.y - vis_reg->rects[rect].y1; | |||||
423 | srcRect_y = MAX( 0, diff)((0) > (diff) ? 0 : diff) + (vis_reg->rects[rect].y1 - reg->y_rootrel - reg->border); | |||||
424 | dst_y = MAX( 0, -diff)((0) > (-diff) ? 0 : -diff) ; | |||||
425 | reg_image = XGetImage(disp,reg->win,srcRect_x,srcRect_y, | |||||
426 | srcRect_width,srcRect_height,AllPlanes((unsigned long)~0L),format) ; | |||||
427 | TransferImage(disp,reg_image,srcRect_width, | |||||
428 | srcRect_height,reg,ximage,dst_x,dst_y) ; | |||||
429 | } | |||||
430 | } | |||||
431 | return ximage ; | |||||
432 | } | |||||
433 | ||||||
434 | ||||||
435 | /** ------------------------------------------------------------------------ | |||||
436 | ------------------------------------------------------------------------ **/ | |||||
437 | ||||||
438 | XImage *ReadAreaToImage(Display *disp, | |||||
439 | /* root win on which grab was done */ | |||||
440 | Window srcRootWinid, | |||||
441 | /* root rel UL corner of bounding box of grab */ | |||||
442 | int x, int y, | |||||
443 | /* size of bounding box of grab */ | |||||
444 | unsigned int width, unsigned int height, | |||||
445 | int numVisuals, XVisualInfo *pVisuals, | |||||
446 | int numOverlayVisuals, OverlayInfo *pOverlayVisuals, | |||||
447 | int numImageVisuals, XVisualInfo **pImageVisuals, | |||||
448 | /* list of regions to read from */ | |||||
449 | list_ptr vis_regions, | |||||
450 | /* list of regions to read from */ | |||||
451 | list_ptr vis_image_regions, | |||||
452 | int format, int allImage) | |||||
453 | { | |||||
454 | image_region_type *reg; | |||||
455 | XRectangle bbox; /* bounding box of grabbed area */ | |||||
456 | int depth ; | |||||
457 | XImage *ximage, *ximage_ipm = NULL((void*)0); | |||||
| ||||||
458 | Visual fakeVis ; | |||||
459 | int x1, y1; | |||||
460 | XImage *image; | |||||
461 | #if 0 | |||||
462 | unsigned char *pmData , *ipmData ; | |||||
463 | #endif | |||||
464 | int transparentColor, transparentType; | |||||
465 | int srcRect_x,srcRect_y,srcRect_width,srcRect_height ; | |||||
466 | int diff ; | |||||
467 | int dst_x, dst_y; /* where in pixmap to write (UL) */ | |||||
468 | int pixel; | |||||
469 | ||||||
470 | bbox.x = x; /* init X rect for bounding box */ | |||||
471 | bbox.y = y; | |||||
472 | bbox.width = width; | |||||
473 | bbox.height = height; | |||||
474 | ||||||
475 | ||||||
476 | initFakeVisual(&fakeVis) ; | |||||
477 | ||||||
478 | depth = 24 ; | |||||
479 | ximage = ReadRegionsInList(disp,&fakeVis,depth,format,width,height, | |||||
480 | bbox,vis_regions) ; | |||||
481 | #if 0 | |||||
482 | pmData = (unsigned char *)ximage -> data ; | |||||
483 | #endif | |||||
484 | ||||||
485 | /* if transparency possible do it again, but this time for image planes only */ | |||||
486 | if (vis_image_regions && (vis_image_regions->next) && !allImage) | |||||
487 | { | |||||
488 | ximage_ipm = ReadRegionsInList(disp,&fakeVis,depth,format,width,height, | |||||
489 | bbox,vis_image_regions) ; | |||||
490 | #if 0 | |||||
491 | ipmData = (unsigned char *)ximage_ipm -> data ; | |||||
492 | #endif | |||||
493 | } | |||||
494 | /* Now tranverse the overlay visual windows and test for transparency index. */ | |||||
495 | /* If you find one, subsitute the value from the matching image plane pixmap. */ | |||||
496 | ||||||
497 | for (reg = (image_region_type *) first_in_list( vis_regions); reg; | |||||
498 | reg = (image_region_type *) next_in_list( vis_regions)) | |||||
499 | { | |||||
500 | ||||||
501 | if (src_in_overlay( reg, numOverlayVisuals, pOverlayVisuals, | |||||
502 | &transparentColor, &transparentType)) | |||||
503 | { | |||||
504 | int test = 0 ; | |||||
505 | srcRect_width = MIN( reg->width + reg->x_vis, bbox.width + bbox.x)((reg->width + reg->x_vis) < (bbox.width + bbox.x) ? reg->width + reg->x_vis : bbox.width + bbox.x) | |||||
506 | - MAX( reg->x_vis, bbox.x)((reg->x_vis) > (bbox.x) ? reg->x_vis : bbox.x); | |||||
507 | srcRect_height = MIN( reg->height + reg->y_vis, bbox.height((reg->height + reg->y_vis) < (bbox.height + bbox.y) ? reg->height + reg->y_vis : bbox.height + bbox.y) | |||||
508 | + bbox.y)((reg->height + reg->y_vis) < (bbox.height + bbox.y) ? reg->height + reg->y_vis : bbox.height + bbox.y) - MAX( reg->y_vis, bbox.y)((reg->y_vis) > (bbox.y) ? reg->y_vis : bbox.y); | |||||
509 | diff = bbox.x - reg->x_vis; | |||||
510 | srcRect_x = MAX( 0, diff)((0) > (diff) ? 0 : diff) + (reg->x_vis - reg->x_rootrel - reg->border); | |||||
511 | dst_x = MAX( 0, -diff)((0) > (-diff) ? 0 : -diff) ; | |||||
512 | diff = bbox.y - reg->y_vis; | |||||
513 | srcRect_y = MAX( 0, diff)((0) > (diff) ? 0 : diff) + (reg->y_vis - reg->y_rootrel - reg->border); | |||||
514 | dst_y = MAX( 0, -diff)((0) > (-diff) ? 0 : -diff) ; | |||||
515 | /* let's test some pixels for transparency */ | |||||
516 | image = XGetImage(disp, reg->win, srcRect_x, srcRect_y, | |||||
517 | srcRect_width, srcRect_height, 0xffffffff, ZPixmap2); | |||||
518 | ||||||
519 | /* let's assume byte per pixel for overlay image for now */ | |||||
520 | if ((image->depth == 8) && (transparentType == TransparentPixel1)) | |||||
521 | { | |||||
522 | unsigned char *pixel_ptr; | |||||
523 | unsigned char *start_of_line = (unsigned char *) image->data; | |||||
524 | ||||||
525 | for (y1 = 0; y1 < srcRect_height; y1++) { | |||||
526 | pixel_ptr = start_of_line; | |||||
527 | for (x1 = 0; x1 < srcRect_width; x1++) | |||||
528 | { | |||||
529 | if (*pixel_ptr++ == transparentColor) | |||||
530 | { | |||||
531 | #if 0 | |||||
532 | *pmData++ = *ipmData++; | |||||
533 | *pmData++ = *ipmData++; | |||||
534 | *pmData++ = *ipmData++; | |||||
535 | #endif | |||||
536 | pixel = XGetPixel(ximage_ipm,dst_x+x1,dst_y+y1)((*((ximage_ipm)->f.get_pixel))((ximage_ipm), (dst_x+x1), ( dst_y+y1))) ; | |||||
537 | XPutPixel(ximage,dst_x+x1, dst_y+y1,pixel)((*((ximage)->f.put_pixel))((ximage), (dst_x+x1), (dst_y+y1 ), (pixel))); | |||||
538 | ||||||
539 | if(!test){ | |||||
540 | test = 1 ; | |||||
541 | } | |||||
542 | } | |||||
543 | #if 0 | |||||
544 | else { | |||||
545 | pmData +=3; | |||||
546 | ipmData +=3; | |||||
547 | } | |||||
548 | #endif | |||||
549 | } | |||||
550 | start_of_line += image->bytes_per_line; | |||||
551 | } | |||||
552 | } else { | |||||
553 | if (transparentType == TransparentPixel1) { | |||||
554 | for (y1 = 0; y1 < srcRect_height; y1++) { | |||||
555 | for (x1 = 0; x1 < srcRect_width; x1++) | |||||
556 | { | |||||
557 | int pixel_value = XGetPixel(image, x1, y1)((*((image)->f.get_pixel))((image), (x1), (y1))); | |||||
558 | if (pixel_value == transparentColor) | |||||
559 | { | |||||
560 | #if 0 | |||||
561 | *pmData++ = *ipmData++; | |||||
562 | *pmData++ = *ipmData++; | |||||
563 | *pmData++ = *ipmData++; | |||||
564 | #endif | |||||
565 | pixel = XGetPixel(ximage_ipm,dst_x+x1,dst_y+y1)((*((ximage_ipm)->f.get_pixel))((ximage_ipm), (dst_x+x1), ( dst_y+y1))) ; | |||||
566 | XPutPixel(ximage,dst_x+x1, dst_y+y1,pixel)((*((ximage)->f.put_pixel))((ximage), (dst_x+x1), (dst_y+y1 ), (pixel))); | |||||
567 | if(!test){ | |||||
568 | test = 1 ; | |||||
569 | } | |||||
570 | } | |||||
571 | #if 0 | |||||
572 | else { | |||||
573 | pmData +=3; | |||||
574 | ipmData +=3; | |||||
575 | } | |||||
576 | #endif | |||||
577 | } | |||||
578 | } | |||||
579 | } else { | |||||
580 | for (y1 = 0; y1 < srcRect_height; y1++) { | |||||
581 | for (x1 = 0; x1 < srcRect_width; x1++) | |||||
582 | { | |||||
583 | int pixel_value = XGetPixel(image, x1, y1)((*((image)->f.get_pixel))((image), (x1), (y1))); | |||||
584 | if (pixel_value & transparentColor) | |||||
585 | { | |||||
586 | #if 0 | |||||
587 | *pmData++ = *ipmData++; | |||||
588 | *pmData++ = *ipmData++; | |||||
589 | *pmData++ = *ipmData++; | |||||
590 | #endif | |||||
591 | pixel = XGetPixel(ximage_ipm,dst_x+x1,dst_y+y1)((*((ximage_ipm)->f.get_pixel))((ximage_ipm), (dst_x+x1), ( dst_y+y1))) ; | |||||
| ||||||
592 | XPutPixel(ximage,dst_x+x1, dst_y+y1,pixel)((*((ximage)->f.put_pixel))((ximage), (dst_x+x1), (dst_y+y1 ), (pixel))); | |||||
593 | if(!test){ | |||||
594 | test = 1 ; | |||||
595 | } | |||||
596 | } | |||||
597 | #if 0 | |||||
598 | else { | |||||
599 | pmData +=3; | |||||
600 | ipmData +=3; | |||||
601 | } | |||||
602 | #endif | |||||
603 | } | |||||
604 | } | |||||
605 | } | |||||
606 | } | |||||
607 | XDestroyImage (image)((*((image)->f.destroy_image))((image))); | |||||
608 | } /* end of src_in_overlay */ | |||||
609 | } /** end transparency **/ | |||||
610 | destroy_region_list( vis_regions); | |||||
611 | if (vis_image_regions) destroy_region_list( vis_image_regions ); | |||||
612 | FreeXVisualInfo(pVisuals, pOverlayVisuals, pImageVisuals); | |||||
613 | XSync(disp, 0); | |||||
614 | ||||||
615 | return ximage; | |||||
616 | } | |||||
617 | ||||||
618 | /** ------------------------------------------------------------------------ | |||||
619 | Creates a list of the subwindows of a given window which have a | |||||
620 | different visual than their parents. The function is recursive. | |||||
621 | This list is used in make_region_list(), which coalesces the | |||||
622 | windows with the same visual into a region. | |||||
623 | image_wins must point to an existing list struct that's already | |||||
624 | been zeroed (zero_list()). | |||||
625 | ------------------------------------------------------------------------ **/ | |||||
626 | static void make_src_list(Display *disp, list_ptr image_wins, | |||||
627 | /* bnding box of area we want */ | |||||
628 | XRectangle *bbox, | |||||
629 | Window curr, | |||||
630 | /* pos of curr WRT root */ | |||||
631 | int x_rootrel, int y_rootrel, | |||||
632 | XWindowAttributes *curr_attrs, | |||||
633 | /* visible part of curr, not obscurred by ancestors */ | |||||
634 | XRectangle *pclip) | |||||
635 | { | |||||
636 | XWindowAttributes child_attrs; | |||||
637 | Window root, parent, *child; /* variables for XQueryTree() */ | |||||
638 | Window *save_child_list; /* variables for XQueryTree() */ | |||||
639 | unsigned int nchild; /* variables for XQueryTree() */ | |||||
640 | XRectangle child_clip; /* vis part of child */ | |||||
641 | int curr_clipX, curr_clipY, curr_clipRt, curr_clipBt; | |||||
642 | ||||||
643 | /* check that win is mapped & not outside bounding box */ | |||||
644 | if (curr_attrs->map_state == IsViewable2 && | |||||
645 | curr_attrs->class == InputOutput1 && | |||||
646 | !( pclip->x >= (int) (bbox->x + bbox->width) || | |||||
647 | pclip->y >= (int) (bbox->y + bbox->height) || | |||||
648 | (int) (pclip->x + pclip->width) <= bbox->x || | |||||
649 | (int) (pclip->y + pclip->height) <= bbox->y)) { | |||||
650 | ||||||
651 | XQueryTree( disp, curr, &root, &parent, &child, &nchild ); | |||||
652 | save_child_list = child; /* so we can free list when we're done */ | |||||
653 | add_window_to_list( image_wins, curr, x_rootrel, y_rootrel, | |||||
654 | pclip->x, pclip->y, | |||||
655 | pclip->width, pclip->height, | |||||
656 | curr_attrs->border_width,curr_attrs->visual, | |||||
657 | curr_attrs->colormap, parent); | |||||
658 | ||||||
659 | ||||||
660 | /** ------------------------------------------------------------------------ | |||||
661 | set RR coords of right (Rt), left (X), bottom (Bt) and top (Y) | |||||
662 | of rect we clip all children by. This is our own clip rect (pclip) | |||||
663 | inflicted on us by our parent plus our own borders. Within the | |||||
664 | child loop, we figure the clip rect for each child by adding in | |||||
665 | it's rectangle (not taking into account the child's borders). | |||||
666 | ------------------------------------------------------------------------ **/ | |||||
667 | curr_clipX = MAX( pclip->x, x_rootrel + (int) curr_attrs->border_width)((pclip->x) > (x_rootrel + (int) curr_attrs->border_width ) ? pclip->x : x_rootrel + (int) curr_attrs->border_width ); | |||||
668 | curr_clipY = MAX( pclip->y, y_rootrel + (int) curr_attrs->border_width)((pclip->y) > (y_rootrel + (int) curr_attrs->border_width ) ? pclip->y : y_rootrel + (int) curr_attrs->border_width ); | |||||
669 | curr_clipRt = MIN( pclip->x + (int) pclip->width,((pclip->x + (int) pclip->width) < (x_rootrel + (int ) curr_attrs->width + 2 * (int) curr_attrs->border_width ) ? pclip->x + (int) pclip->width : x_rootrel + (int) curr_attrs ->width + 2 * (int) curr_attrs->border_width) | |||||
670 | x_rootrel + (int) curr_attrs->width +((pclip->x + (int) pclip->width) < (x_rootrel + (int ) curr_attrs->width + 2 * (int) curr_attrs->border_width ) ? pclip->x + (int) pclip->width : x_rootrel + (int) curr_attrs ->width + 2 * (int) curr_attrs->border_width) | |||||
671 | 2 * (int) curr_attrs->border_width)((pclip->x + (int) pclip->width) < (x_rootrel + (int ) curr_attrs->width + 2 * (int) curr_attrs->border_width ) ? pclip->x + (int) pclip->width : x_rootrel + (int) curr_attrs ->width + 2 * (int) curr_attrs->border_width); | |||||
672 | curr_clipBt = MIN( pclip->y + (int) pclip->height,((pclip->y + (int) pclip->height) < (y_rootrel + (int ) curr_attrs->height + 2 * (int) curr_attrs->border_width ) ? pclip->y + (int) pclip->height : y_rootrel + (int) curr_attrs ->height + 2 * (int) curr_attrs->border_width) | |||||
673 | y_rootrel + (int) curr_attrs->height +((pclip->y + (int) pclip->height) < (y_rootrel + (int ) curr_attrs->height + 2 * (int) curr_attrs->border_width ) ? pclip->y + (int) pclip->height : y_rootrel + (int) curr_attrs ->height + 2 * (int) curr_attrs->border_width) | |||||
674 | 2 * (int) curr_attrs->border_width)((pclip->y + (int) pclip->height) < (y_rootrel + (int ) curr_attrs->height + 2 * (int) curr_attrs->border_width ) ? pclip->y + (int) pclip->height : y_rootrel + (int) curr_attrs ->height + 2 * (int) curr_attrs->border_width); | |||||
675 | ||||||
676 | while (nchild--) { | |||||
677 | int new_width, new_height; | |||||
678 | int child_xrr, child_yrr; /* root relative x & y of child */ | |||||
679 | ||||||
680 | XGetWindowAttributes( disp, *child, &child_attrs); | |||||
681 | ||||||
682 | /* intersect parent & child clip rects */ | |||||
683 | child_xrr = x_rootrel + child_attrs.x + curr_attrs->border_width; | |||||
684 | child_clip.x = MAX( curr_clipX, child_xrr)((curr_clipX) > (child_xrr) ? curr_clipX : child_xrr); | |||||
685 | new_width = MIN( curr_clipRt, child_xrr + (int) child_attrs.width((curr_clipRt) < (child_xrr + (int) child_attrs.width + 2 * child_attrs.border_width) ? curr_clipRt : child_xrr + (int) child_attrs .width + 2 * child_attrs.border_width) | |||||
686 | + 2 * child_attrs.border_width)((curr_clipRt) < (child_xrr + (int) child_attrs.width + 2 * child_attrs.border_width) ? curr_clipRt : child_xrr + (int) child_attrs .width + 2 * child_attrs.border_width) | |||||
687 | - child_clip.x; | |||||
688 | if (new_width >= 0) { | |||||
689 | child_clip.width = new_width; | |||||
690 | ||||||
691 | child_yrr = y_rootrel + child_attrs.y + | |||||
692 | curr_attrs->border_width; | |||||
693 | child_clip.y = MAX( curr_clipY, child_yrr)((curr_clipY) > (child_yrr) ? curr_clipY : child_yrr); | |||||
694 | new_height = MIN( curr_clipBt,((curr_clipBt) < (child_yrr + (int) child_attrs.height + 2 * child_attrs.border_width) ? curr_clipBt : child_yrr + (int ) child_attrs.height + 2 * child_attrs.border_width) | |||||
695 | child_yrr + (int) child_attrs.height +((curr_clipBt) < (child_yrr + (int) child_attrs.height + 2 * child_attrs.border_width) ? curr_clipBt : child_yrr + (int ) child_attrs.height + 2 * child_attrs.border_width) | |||||
696 | 2 * child_attrs.border_width)((curr_clipBt) < (child_yrr + (int) child_attrs.height + 2 * child_attrs.border_width) ? curr_clipBt : child_yrr + (int ) child_attrs.height + 2 * child_attrs.border_width) | |||||
697 | - child_clip.y; | |||||
698 | if (new_height >= 0) { | |||||
699 | child_clip.height = new_height; | |||||
700 | make_src_list( disp, image_wins, bbox, *child, | |||||
701 | child_xrr, child_yrr, | |||||
702 | &child_attrs, &child_clip); | |||||
703 | } | |||||
704 | } | |||||
705 | child++; | |||||
706 | } | |||||
707 | XFree( save_child_list); | |||||
708 | } | |||||
709 | } | |||||
710 | ||||||
711 | ||||||
712 | /** ------------------------------------------------------------------------ | |||||
713 | This function creates a list of regions which tile a specified | |||||
714 | window. Each region contains all visible portions of the window | |||||
715 | which are drawn with the same visual. For example, if the | |||||
716 | window consists of subwindows of two different visual types, | |||||
717 | there will be two regions in the list. | |||||
718 | Returns a pointer to the list. | |||||
719 | ------------------------------------------------------------------------ **/ | |||||
720 | static list_ptr make_region_list(Display *disp, Window win, XRectangle *bbox, | |||||
721 | int *hasNonDefault, int numImageVisuals, | |||||
722 | XVisualInfo **pImageVisuals, int *allImage) | |||||
723 | { | |||||
724 | XWindowAttributes win_attrs; | |||||
725 | list image_wins; | |||||
726 | list_ptr image_regions; | |||||
727 | list_ptr srcs_left; | |||||
728 | image_region_type *new_reg; | |||||
729 | image_win_type *base_src, *src; | |||||
730 | Region bbox_region = XCreateRegion(); | |||||
731 | XRectangle clip; | |||||
732 | int image_only; | |||||
733 | ||||||
734 | int count=0 ; | |||||
735 | ||||||
736 | *hasNonDefault = False0; | |||||
737 | XUnionRectWithRegion( bbox, bbox_region, bbox_region); | |||||
738 | XGetWindowAttributes( disp, win, &win_attrs); | |||||
739 | ||||||
740 | zero_list( &image_wins); | |||||
741 | clip.x = 0; | |||||
742 | clip.y = 0; | |||||
743 | clip.width = win_attrs.width; | |||||
744 | clip.height = win_attrs.height; | |||||
745 | make_src_list( disp, &image_wins, bbox, win, | |||||
746 | 0 /* x_rootrel */, 0 /* y_rootrel */, &win_attrs, &clip); | |||||
747 | ||||||
748 | image_regions = new_list(); | |||||
749 | image_only = (*allImage) ? True1:False0; | |||||
750 | ||||||
751 | for (base_src = (image_win_type *) first_in_list( &image_wins); base_src; | |||||
752 | base_src = (image_win_type *) next_in_list( &image_wins)) | |||||
753 | { | |||||
754 | /* test for image visual */ | |||||
755 | if (!image_only || src_in_image(base_src, numImageVisuals, pImageVisuals)) | |||||
756 | { | |||||
757 | /* find a window whose visual hasn't been put in list yet */ | |||||
758 | if (!src_in_region_list( base_src, image_regions)) | |||||
759 | { | |||||
760 | if (! (new_reg = (image_region_type *) | |||||
761 | malloc( sizeof( image_region_type)))) { | |||||
762 | return (list_ptr) NULL((void*)0); | |||||
763 | } | |||||
764 | count++; | |||||
765 | ||||||
766 | new_reg->visible_region = XCreateRegion(); | |||||
767 | new_reg->win = base_src->win; | |||||
768 | new_reg->vis = base_src->vis; | |||||
769 | new_reg->cmap = base_src->cmap; | |||||
770 | new_reg->x_rootrel = base_src->x_rootrel; | |||||
771 | new_reg->y_rootrel = base_src->y_rootrel; | |||||
772 | new_reg->x_vis = base_src->x_vis; | |||||
773 | new_reg->y_vis = base_src->y_vis; | |||||
774 | new_reg->width = base_src->width; | |||||
775 | new_reg->height = base_src->height; | |||||
776 | new_reg->border = base_src->border_width; | |||||
777 | ||||||
778 | srcs_left = (list_ptr) dup_list_head( &image_wins, START_AT_CURR1); | |||||
779 | for (src = (image_win_type *) first_in_list( srcs_left); src; | |||||
780 | src = (image_win_type *) next_in_list( srcs_left)) { | |||||
781 | if (SAME_REGIONS( base_src, src)((base_src)->vis == (src)->vis && (base_src)-> cmap == (src)->cmap && (base_src)->x_vis <= ( src)->x_vis && (base_src)->y_vis <= (src)-> y_vis && (base_src)->x_vis + (base_src)->width >= (src)->x_vis + (src)->width && (base_src)-> y_vis + (base_src)->height >= (src)->y_vis + (src)-> height)) { | |||||
782 | add_rect_to_image_region( new_reg, src->x_vis, src->y_vis, | |||||
783 | src->width, src->height); | |||||
784 | } | |||||
785 | else { | |||||
786 | if (!image_only || src_in_image(src, numImageVisuals, pImageVisuals)) | |||||
787 | { | |||||
788 | subtr_rect_from_image_region( new_reg, src->x_vis, | |||||
789 | src->y_vis, src->width, src->height); | |||||
790 | } | |||||
791 | } | |||||
792 | } | |||||
793 | XIntersectRegion( bbox_region, new_reg->visible_region, | |||||
794 | new_reg->visible_region); | |||||
795 | if (! XEmptyRegion( new_reg->visible_region)) { | |||||
796 | add_to_list( image_regions, new_reg); | |||||
797 | if (new_reg->vis != DefaultVisualOfScreen( win_attrs.screen)((win_attrs.screen)->root_visual) || | |||||
798 | new_reg->cmap != DefaultColormapOfScreen(((win_attrs.screen)->cmap) | |||||
799 | win_attrs.screen)((win_attrs.screen)->cmap)) { | |||||
800 | *hasNonDefault = True1; | |||||
801 | } | |||||
802 | } | |||||
803 | else { | |||||
804 | XDestroyRegion( new_reg->visible_region); | |||||
805 | free( (void *) new_reg); | |||||
806 | } | |||||
807 | } | |||||
808 | } else *allImage = 0; | |||||
809 | } | |||||
810 | delete_list( &image_wins, True1); | |||||
811 | XDestroyRegion( bbox_region); | |||||
812 | return image_regions; | |||||
813 | } | |||||
814 | /** ------------------------------------------------------------------------ | |||||
815 | Destructor called from destroy_region_list(). | |||||
816 | ------------------------------------------------------------------------ **/ | |||||
817 | static void destroy_image_region(image_region_type *image_region) | |||||
818 | { | |||||
819 | XDestroyRegion( image_region->visible_region); | |||||
820 | free( (void *) image_region); | |||||
821 | } | |||||
822 | ||||||
823 | /** ------------------------------------------------------------------------ | |||||
824 | Destroys the region list, destroying all the regions contained in it. | |||||
825 | ------------------------------------------------------------------------ **/ | |||||
826 | static void destroy_region_list(list_ptr rlist) | |||||
827 | { | |||||
828 | delete_list_destroying( rlist, (DESTRUCT_FUNC_PTR)destroy_image_region); | |||||
829 | } | |||||
830 | ||||||
831 | ||||||
832 | /** ------------------------------------------------------------------------ | |||||
833 | Subtracts the specified rectangle from the region in image_region. | |||||
834 | First converts the rectangle to a region of its own, since X | |||||
835 | only provides a way to subtract one region from another, not a | |||||
836 | rectangle from a region. | |||||
837 | ------------------------------------------------------------------------ **/ | |||||
838 | static void subtr_rect_from_image_region(image_region_type *image_region, | |||||
839 | int x, int y, int width, int height) | |||||
840 | { | |||||
841 | XRectangle rect; | |||||
842 | Region rect_region; | |||||
843 | ||||||
844 | rect_region = XCreateRegion(); | |||||
845 | rect.x = x; | |||||
846 | rect.y = y; | |||||
847 | rect.width = width; | |||||
848 | rect.height = height; | |||||
849 | XUnionRectWithRegion( &rect, rect_region, rect_region); | |||||
850 | XSubtractRegion( image_region->visible_region, rect_region, | |||||
851 | image_region->visible_region); | |||||
852 | XDestroyRegion( rect_region); | |||||
853 | } | |||||
854 | ||||||
855 | ||||||
856 | /** ------------------------------------------------------------------------ | |||||
857 | Adds the specified rectangle to the region in image_region. | |||||
858 | ------------------------------------------------------------------------ **/ | |||||
859 | static void add_rect_to_image_region(image_region_type *image_region, | |||||
860 | int x, int y, int width, int height) | |||||
861 | { | |||||
862 | XRectangle rect; | |||||
863 | ||||||
864 | rect.x = x; | |||||
865 | rect.y = y; | |||||
866 | rect.width = width; | |||||
867 | rect.height = height; | |||||
868 | XUnionRectWithRegion( &rect, image_region->visible_region, | |||||
869 | image_region->visible_region); | |||||
870 | } | |||||
871 | ||||||
872 | ||||||
873 | /** ------------------------------------------------------------------------ | |||||
874 | Returns TRUE if the given src's visual is already represented in | |||||
875 | the image_regions list, FALSE otherwise. | |||||
876 | ------------------------------------------------------------------------ **/ | |||||
877 | static int src_in_region_list(image_win_type *src, list_ptr image_regions) | |||||
878 | { | |||||
879 | image_region_type *ir; | |||||
880 | ||||||
881 | for (ir = (image_region_type *) first_in_list( image_regions); ir; | |||||
882 | ir = (image_region_type *) next_in_list( image_regions)) { | |||||
883 | if (SAME_REGIONS( ir, src)((ir)->vis == (src)->vis && (ir)->cmap == (src )->cmap && (ir)->x_vis <= (src)->x_vis && (ir)->y_vis <= (src)->y_vis && (ir)->x_vis + (ir)->width >= (src)->x_vis + (src)->width && (ir)->y_vis + (ir)->height >= (src)->y_vis + (src )->height)) { | |||||
884 | ||||||
885 | return 1; | |||||
886 | } | |||||
887 | } | |||||
888 | ||||||
889 | return 0; | |||||
890 | } | |||||
891 | ||||||
892 | ||||||
893 | /** ------------------------------------------------------------------------ | |||||
894 | Makes a new entry in image_wins with the given fields filled in. | |||||
895 | ------------------------------------------------------------------------ **/ | |||||
896 | static void add_window_to_list(list_ptr image_wins, Window w, | |||||
897 | int xrr, int yrr, int x_vis, int y_vis, | |||||
898 | int width, int height, int border_width, | |||||
899 | Visual *vis, Colormap cmap, Window parent) | |||||
900 | { | |||||
901 | image_win_type *new_src; | |||||
902 | ||||||
903 | if ((new_src = (image_win_type *) malloc( sizeof( image_win_type))) == NULL((void*)0)) | |||||
904 | ||||||
905 | return; | |||||
906 | ||||||
907 | new_src->win = w; | |||||
908 | new_src->x_rootrel = xrr; | |||||
909 | new_src->y_rootrel = yrr; | |||||
910 | new_src->x_vis = x_vis; | |||||
911 | new_src->y_vis = y_vis; | |||||
912 | new_src->width = width; | |||||
913 | new_src->height = height; | |||||
914 | new_src->border_width = border_width; | |||||
915 | new_src->vis = vis; | |||||
916 | new_src->cmap = cmap; | |||||
917 | new_src->parent = parent; | |||||
918 | add_to_list( image_wins, new_src); | |||||
919 | } | |||||
920 | ||||||
921 | /** ------------------------------------------------------------------------ | |||||
922 | Returns TRUE if the given src's visual is in the image planes, | |||||
923 | FALSE otherwise. | |||||
924 | ------------------------------------------------------------------------ **/ | |||||
925 | static int src_in_image(image_win_type *src, int numImageVisuals, | |||||
926 | XVisualInfo **pImageVisuals) | |||||
927 | { | |||||
928 | int i; | |||||
929 | ||||||
930 | for (i = 0 ; i < numImageVisuals ; i++) | |||||
931 | { | |||||
932 | if (pImageVisuals[i]->visual == src->vis) | |||||
933 | return 1; | |||||
934 | } | |||||
935 | return 0; | |||||
936 | } | |||||
937 | ||||||
938 | ||||||
939 | /** ------------------------------------------------------------------------ | |||||
940 | Returns TRUE if the given src's visual is in the overlay planes | |||||
941 | and transparency is possible, FALSE otherwise. | |||||
942 | ------------------------------------------------------------------------ **/ | |||||
943 | static int src_in_overlay(image_region_type *src, int numOverlayVisuals, | |||||
944 | OverlayInfo *pOverlayVisuals, | |||||
945 | int *transparentColor, int *transparentType) | |||||
946 | { | |||||
947 | int i; | |||||
948 | ||||||
949 | for (i = 0 ; i < numOverlayVisuals ; i++) | |||||
950 | { | |||||
951 | if (((pOverlayVisuals[i].pOverlayVisualInfo)->visual == src->vis) | |||||
952 | && (pOverlayVisuals[i].transparentType != None0L)) | |||||
953 | { | |||||
954 | *transparentColor = pOverlayVisuals[i].value; | |||||
955 | *transparentType = pOverlayVisuals[i].transparentType; | |||||
956 | return 1; | |||||
957 | } | |||||
958 | ||||||
959 | else { | |||||
960 | } | |||||
961 | ||||||
962 | } | |||||
963 | return 0; | |||||
964 | } | |||||
965 | ||||||
966 | ||||||
967 | /********************** from wsutils.c ******************************/ | |||||
968 | ||||||
969 | /****************************************************************************** | |||||
970 | * | |||||
971 | * This file contains a set of example utility procedures; procedures that can | |||||
972 | * help a "window-smart" Starbase or PHIGS program determine information about | |||||
973 | * a device, and create image and overlay plane windows. To use these | |||||
974 | * utilities, #include "wsutils.h" and compile this file and link the results | |||||
975 | * with your program. | |||||
976 | * | |||||
977 | ******************************************************************************/ | |||||
978 | ||||||
979 | ||||||
980 | ||||||
981 | #define STATIC_GRAY0x01 0x01 | |||||
982 | #define GRAY_SCALE0x02 0x02 | |||||
983 | #define PSEUDO_COLOR0x04 0x04 | |||||
984 | #define TRUE_COLOR0x10 0x10 | |||||
985 | #define DIRECT_COLOR0x11 0x11 | |||||
986 | ||||||
987 | ||||||
988 | static int weCreateServerOverlayVisualsProperty = False0; | |||||
989 | ||||||
990 | ||||||
991 | /****************************************************************************** | |||||
992 | * | |||||
993 | * GetXVisualInfo() | |||||
994 | * | |||||
995 | * This routine takes an X11 Display, screen number, and returns whether the | |||||
996 | * screen supports transparent overlays and three arrays: | |||||
997 | * | |||||
998 | * 1) All of the XVisualInfo struct's for the screen. | |||||
999 | * 2) All of the OverlayInfo struct's for the screen. | |||||
1000 | * 3) An array of pointers to the screen's image plane XVisualInfo | |||||
1001 | * structs. | |||||
1002 | * | |||||
1003 | * The code below obtains the array of all the screen's visuals, and obtains | |||||
1004 | * the array of all the screen's overlay visual information. It then processes | |||||
1005 | * the array of the screen's visuals, determining whether the visual is an | |||||
1006 | * overlay or image visual. | |||||
1007 | * | |||||
1008 | * If the routine sucessfully obtained the visual information, it returns zero. | |||||
1009 | * If the routine didn't obtain the visual information, it returns non-zero. | |||||
1010 | * | |||||
1011 | ******************************************************************************/ | |||||
1012 | ||||||
1013 | int GetXVisualInfo(/* Which X server (aka "display"). */ | |||||
1014 | Display *display, | |||||
1015 | /* Which screen of the "display". */ | |||||
1016 | int screen, | |||||
1017 | /* Non-zero if there's at least one overlay visual and | |||||
1018 | * if at least one of those supports a transparent pixel. */ | |||||
1019 | int *transparentOverlays, | |||||
1020 | /* Number of XVisualInfo struct's pointed to by pVisuals. */ | |||||
1021 | int *numVisuals, | |||||
1022 | /* All of the device's visuals. */ | |||||
1023 | XVisualInfo **pVisuals, | |||||
1024 | /* Number of OverlayInfo's pointed to by pOverlayVisuals. | |||||
1025 | * If this number is zero, the device does not have | |||||
1026 | * overlay planes. */ | |||||
1027 | int *numOverlayVisuals, | |||||
1028 | /* The device's overlay plane visual information. */ | |||||
1029 | OverlayInfo **pOverlayVisuals, | |||||
1030 | /* Number of XVisualInfo's pointed to by pImageVisuals. */ | |||||
1031 | int *numImageVisuals, | |||||
1032 | /* The device's image visuals. */ | |||||
1033 | XVisualInfo ***pImageVisuals) | |||||
1034 | { | |||||
1035 | XVisualInfo getVisInfo; /* Paramters of XGetVisualInfo */ | |||||
1036 | int mask; | |||||
1037 | XVisualInfo *pVis, **pIVis; /* Faster, local copies */ | |||||
1038 | OverlayInfo *pOVis; | |||||
1039 | OverlayVisualPropertyRec *pOOldVis; | |||||
1040 | int nVisuals, nOVisuals; | |||||
1041 | Atom overlayVisualsAtom; /* Parameters for XGetWindowProperty */ | |||||
1042 | Atom actualType; | |||||
1043 | unsigned long numLongs, bytesAfter; | |||||
1044 | int actualFormat; | |||||
1045 | int nImageVisualsAlloced; /* Values to process the XVisualInfo */ | |||||
1046 | int imageVisual; /* array */ | |||||
1047 | ||||||
1048 | ||||||
1049 | /* First, get the list of visuals for this screen. */ | |||||
1050 | getVisInfo.screen = screen; | |||||
1051 | mask = VisualScreenMask0x2; | |||||
1052 | ||||||
1053 | *pVisuals = XGetVisualInfo(display, mask, &getVisInfo, numVisuals); | |||||
1054 | if ((nVisuals = *numVisuals) <= 0) | |||||
1055 | { | |||||
1056 | /* Return that the information wasn't sucessfully obtained: */ | |||||
1057 | return(1); | |||||
1058 | } | |||||
1059 | pVis = *pVisuals; | |||||
1060 | ||||||
1061 | ||||||
1062 | /* Now, get the overlay visual information for this screen. To obtain | |||||
1063 | * this information, get the SERVER_OVERLAY_VISUALS property. | |||||
1064 | */ | |||||
1065 | overlayVisualsAtom = XInternAtom(display, "SERVER_OVERLAY_VISUALS", True1); | |||||
1066 | if (overlayVisualsAtom != None0L) | |||||
1067 | { | |||||
1068 | /* Since the Atom exists, we can request the property's contents. The | |||||
1069 | * do-while loop makes sure we get the entire list from the X server. | |||||
1070 | */ | |||||
1071 | bytesAfter = 0; | |||||
1072 | numLongs = sizeof(OverlayVisualPropertyRec) / sizeof(long); | |||||
1073 | do | |||||
1074 | { | |||||
1075 | numLongs += bytesAfter * sizeof(long); | |||||
1076 | XGetWindowProperty(display, RootWindow(display, screen)((&((_XPrivDisplay)(display))->screens[screen])->root ), | |||||
1077 | overlayVisualsAtom, 0, numLongs, False0, | |||||
1078 | overlayVisualsAtom, &actualType, &actualFormat, | |||||
1079 | &numLongs, &bytesAfter, (unsigned char**) pOverlayVisuals); | |||||
1080 | } while (bytesAfter > 0); | |||||
1081 | ||||||
1082 | ||||||
1083 | /* Calculate the number of overlay visuals in the list. */ | |||||
1084 | *numOverlayVisuals = numLongs / (sizeof(OverlayVisualPropertyRec) / sizeof(long)); | |||||
1085 | } | |||||
1086 | else | |||||
1087 | { | |||||
1088 | /* This screen doesn't have overlay planes. */ | |||||
1089 | *numOverlayVisuals = 0; | |||||
1090 | *pOverlayVisuals = NULL((void*)0); | |||||
1091 | *transparentOverlays = 0; | |||||
1092 | } | |||||
1093 | ||||||
1094 | ||||||
1095 | /* Process the pVisuals array. */ | |||||
1096 | *numImageVisuals = 0; | |||||
1097 | nImageVisualsAlloced = 1; | |||||
1098 | pIVis = *pImageVisuals = (XVisualInfo **) malloc(sizeof(XVisualInfo *)); | |||||
1099 | while (--nVisuals >= 0) | |||||
1100 | { | |||||
1101 | nOVisuals = *numOverlayVisuals; | |||||
1102 | pOVis = *pOverlayVisuals; | |||||
1103 | imageVisual = True1; | |||||
1104 | while (--nOVisuals >= 0) | |||||
1105 | { | |||||
1106 | pOOldVis = (OverlayVisualPropertyRec *) pOVis; | |||||
1107 | if (pVis->visualid == pOOldVis->visualID) | |||||
1108 | { | |||||
1109 | imageVisual = False0; | |||||
1110 | pOVis->pOverlayVisualInfo = pVis; | |||||
1111 | if (pOVis->transparentType == TransparentPixel1) | |||||
1112 | *transparentOverlays = 1; | |||||
1113 | } | |||||
1114 | pOVis++; | |||||
1115 | } | |||||
1116 | if (imageVisual) | |||||
1117 | { | |||||
1118 | if ((*numImageVisuals += 1) > nImageVisualsAlloced) | |||||
1119 | { | |||||
1120 | nImageVisualsAlloced++; | |||||
1121 | *pImageVisuals = (XVisualInfo **) | |||||
1122 | realloc(*pImageVisuals, (nImageVisualsAlloced * sizeof(XVisualInfo *))); | |||||
1123 | pIVis = *pImageVisuals + (*numImageVisuals - 1); | |||||
1124 | } | |||||
1125 | *pIVis++ = pVis; | |||||
1126 | } | |||||
1127 | pVis++; | |||||
1128 | } | |||||
1129 | ||||||
1130 | ||||||
1131 | /* Return that the information was sucessfully obtained: */ | |||||
1132 | return(0); | |||||
1133 | ||||||
1134 | } /* GetXVisualInfo() */ | |||||
1135 | ||||||
1136 | ||||||
1137 | /****************************************************************************** | |||||
1138 | * | |||||
1139 | * FreeXVisualInfo() | |||||
1140 | * | |||||
1141 | * This routine frees the data that was allocated by GetXVisualInfo(). | |||||
1142 | * | |||||
1143 | ******************************************************************************/ | |||||
1144 | ||||||
1145 | void FreeXVisualInfo(XVisualInfo *pVisuals, OverlayInfo *pOverlayVisuals, | |||||
1146 | XVisualInfo **pImageVisuals) | |||||
1147 | { | |||||
1148 | XFree(pVisuals); | |||||
1149 | if (weCreateServerOverlayVisualsProperty) | |||||
1150 | free(pOverlayVisuals); | |||||
1151 | else | |||||
1152 | XFree(pOverlayVisuals); | |||||
1153 | free(pImageVisuals); | |||||
1154 | ||||||
1155 | } /* FreeXVisualInfo() */ |