J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Portions Copyright 1999-2004 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | /* $XConsortium: multiVis.c /main/4 1996/10/14 15:04:08 swick $ */ |
| 26 | /** ------------------------------------------------------------------------ |
| 27 | This file contains functions to create a list of regions which |
| 28 | tile a specified window. Each region contains all visible |
| 29 | portions of the window which are drawn with the same visual. |
| 30 | If the window consists of subwindows of two different visual types, |
| 31 | there will be two regions in the list. The list can be traversed |
| 32 | to correctly pull an image of the window using XGetImage or the |
| 33 | Image Library. |
| 34 | |
| 35 | This file is available under and governed by the GNU General Public |
| 36 | License version 2 only, as published by the Free Software Foundation. |
| 37 | However, the following notice accompanied the original version of this |
| 38 | file: |
| 39 | |
| 40 | Copyright (c) 1994 Hewlett-Packard Co. |
| 41 | Copyright (c) 1996 X Consortium |
| 42 | |
| 43 | Permission is hereby granted, free of charge, to any person obtaining |
| 44 | a copy of this software and associated documentation files (the |
| 45 | "Software"), to deal in the Software without restriction, including |
| 46 | without limitation the rights to use, copy, modify, merge, publish, |
| 47 | distribute, sublicense, and sell copies of the Software, and to |
| 48 | permit persons to whom the Software is furnished to do so, subject to |
| 49 | the following conditions: |
| 50 | |
| 51 | The above copyright notice and this permission notice shall be included |
| 52 | in all copies or substantial portions of the Software. |
| 53 | |
| 54 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 55 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 56 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 57 | IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 58 | OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 59 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 60 | OTHER DEALINGS IN THE SOFTWARE. |
| 61 | |
| 62 | Except as contained in this notice, the name of the X Consortium shall |
| 63 | not be used in advertising or otherwise to promote the sale, use or |
| 64 | other dealings in this Software without prior written authorization |
| 65 | from the X Consortium. |
| 66 | |
| 67 | ------------------------------------------------------------------------ **/ |
| 68 | #include <stdlib.h> |
| 69 | #include <X11/Xlib.h> |
| 70 | #include <X11/Xutil.h> |
| 71 | #include <X11/X.h> |
| 72 | #include <stdio.h> |
| 73 | #include "list.h" |
| 74 | #include "wsutils.h" |
| 75 | #include "multiVis.h" |
| 76 | #include "robot_common.h" |
| 77 | |
| 78 | static char *vis_class_str[] = { "StaticGray" , "GrayScale" , "StaticColor", |
| 79 | "PseudoColor","TrueColor","DirectColor" } ; |
| 80 | /* These structures are copied from X11/region.h. For some reason |
| 81 | * they're invisible from the outside.*/ |
| 82 | |
| 83 | typedef struct { |
| 84 | short x1, x2, y1, y2; |
| 85 | } myBox, myBOX, myBoxRec, *myBoxPtr; |
| 86 | |
| 87 | typedef struct my_XRegion { /* 64-bit: Region is supposed to be opaque */ |
| 88 | long size; /* but it is defined here anyway. I'm going */ |
| 89 | long numRects; /* to leave those longs alone. */ |
| 90 | myBOX *rects; |
| 91 | myBOX extents; |
| 92 | } myREGION; |
| 93 | |
| 94 | /* Items in long list of windows that have some part in the grabbed area */ |
| 95 | typedef struct { |
| 96 | Window win; |
| 97 | Visual *vis; |
| 98 | Colormap cmap; |
| 99 | int32_t x_rootrel, y_rootrel; /* root relative location of window */ |
| 100 | int32_t x_vis, y_vis; /* rt rel x,y of vis part, not parent clipped */ |
| 101 | int32_t width, height; /* width and height of visible part */ |
| 102 | int32_t border_width; /* border width of the window */ |
| 103 | Window parent; /* id of parent (for debugging) */ |
| 104 | } image_win_type; |
| 105 | |
| 106 | /* Items in short list of regions that tile the grabbed area. May have |
| 107 | multiple windows in the region. |
| 108 | */ |
| 109 | typedef struct { |
| 110 | Window win; /* lowest window of this visual */ |
| 111 | Visual *vis; |
| 112 | Colormap cmap; |
| 113 | int32_t x_rootrel, y_rootrel; /* root relative location of bottom window */ |
| 114 | int32_t x_vis, y_vis; /* rt rel x,y of vis part, not parent clipped */ |
| 115 | int32_t width, height; /* w & h of visible rect of bottom window */ |
| 116 | int32_t border; /* border width of the window */ |
| 117 | Region visible_region; |
| 118 | } image_region_type; |
| 119 | |
| 120 | /** ------------------------------------------------------------------------ |
| 121 | Returns TRUE if the two structs pointed to have the same "vis" & |
| 122 | "cmap" fields and s2 lies completely within s1. s1 and s2 can |
| 123 | point to structs of image_win_type or image_region_type. |
| 124 | ------------------------------------------------------------------------ **/ |
| 125 | #define SAME_REGIONS( s1, s2) \ |
| 126 | ((s1)->vis == (s2)->vis && (s1)->cmap == (s2)->cmap && \ |
| 127 | (s1)->x_vis <= (s2)->x_vis && \ |
| 128 | (s1)->y_vis <= (s2)->y_vis && \ |
| 129 | (s1)->x_vis + (s1)->width >= (s2)->x_vis + (s2)->width && \ |
| 130 | (s1)->y_vis + (s1)->height >= (s2)->y_vis + (s2)->height) |
| 131 | |
| 132 | #ifndef MIN |
| 133 | #define MIN( a, b) ((a) < (b) ? a : b) |
| 134 | #define MAX( a, b) ((a) > (b) ? a : b) |
| 135 | #endif |
| 136 | |
| 137 | #define RED_SHIFT 16 |
| 138 | #define GREEN_SHIFT 8 |
| 139 | #define BLUE_SHIFT 0 |
| 140 | |
| 141 | /* |
| 142 | extern list_ptr new_list(); |
| 143 | extern list_ptr dup_list_head(); |
| 144 | extern void * first_in_list(); |
| 145 | extern void * next_in_list(); |
| 146 | extern int32_t add_to_list(); |
| 147 | extern void zero_list(); |
| 148 | extern void delete_list(); |
| 149 | extern void delete_list_destroying(); |
| 150 | extern uint32_t list_length(); |
| 151 | */ |
| 152 | |
| 153 | /* Prototype Declarations for Static Functions */ |
| 154 | static void TransferImage( |
| 155 | #if NeedFunctionPrototypes |
| 156 | Display *, XImage *,int32_t, int32_t , image_region_type*, |
| 157 | XImage *,int32_t ,int32_t |
| 158 | #endif |
| 159 | ); |
| 160 | static XImage * ReadRegionsInList( |
| 161 | #if NeedFunctionPrototypes |
| 162 | Display *, Visual *, int32_t ,int32_t ,int32_t , |
| 163 | int32_t , XRectangle, list_ptr |
| 164 | #endif |
| 165 | ); |
| 166 | |
| 167 | static list_ptr make_region_list( |
| 168 | #if NeedFunctionPrototypes |
| 169 | Display*, Window, XRectangle*, |
| 170 | int32_t*, int32_t, XVisualInfo**, int32_t * |
| 171 | #endif |
| 172 | ); |
| 173 | |
| 174 | static void destroy_region_list( |
| 175 | #if NeedFunctionPrototypes |
| 176 | list_ptr |
| 177 | #endif |
| 178 | ) ; |
| 179 | static void subtr_rect_from_image_region( |
| 180 | #if NeedFunctionPrototypes |
| 181 | image_region_type *, int32_t , int32_t , int32_t , int32_t |
| 182 | #endif |
| 183 | ); |
| 184 | static void add_rect_to_image_region( |
| 185 | #if NeedFunctionPrototypes |
| 186 | image_region_type *, |
| 187 | int32_t , int32_t , int32_t , int32_t |
| 188 | #endif |
| 189 | ); |
| 190 | static int32_t src_in_region_list( |
| 191 | #if NeedFunctionPrototypes |
| 192 | image_win_type *, list_ptr |
| 193 | #endif |
| 194 | ); |
| 195 | static void add_window_to_list( |
| 196 | #if NeedFunctionPrototypes |
| 197 | list_ptr, Window, int32_t, int32_t , |
| 198 | int32_t , int32_t , int32_t , int32_t, int32_t, |
| 199 | Visual*, Colormap, Window |
| 200 | #endif |
| 201 | ); |
| 202 | static int32_t src_in_image( |
| 203 | #if NeedFunctionPrototypes |
| 204 | image_win_type *, int32_t , XVisualInfo** |
| 205 | #endif |
| 206 | ); |
| 207 | static int32_t src_in_overlay( |
| 208 | #if NeedFunctionPrototypes |
| 209 | image_region_type *, int32_t, OverlayInfo *, int32_t*, int32_t* |
| 210 | #endif |
| 211 | ); |
| 212 | |
| 213 | /* End of Prototype Declarations */ |
| 214 | |
| 215 | void initFakeVisual(Vis) |
| 216 | Visual *Vis ; |
| 217 | { |
| 218 | Vis->ext_data=NULL; |
| 219 | Vis->class = DirectColor ; |
| 220 | Vis->red_mask = 0x00FF0000; |
| 221 | Vis->green_mask = 0x0000FF00 ; |
| 222 | Vis->blue_mask = 0x000000FF ; |
| 223 | Vis->map_entries = 256 ; |
| 224 | Vis->bits_per_rgb = 8 ; |
| 225 | } |
| 226 | |
| 227 | /* QueryColorMap has been moved into robot_common.c so it can be used by |
| 228 | * awt_DataTransferer.c as well. |
| 229 | */ |
| 230 | |
| 231 | int32_t |
| 232 | GetMultiVisualRegions(disp,srcRootWinid, x, y, width, height, |
| 233 | transparentOverlays,numVisuals, pVisuals,numOverlayVisuals, pOverlayVisuals, |
| 234 | numImageVisuals, pImageVisuals,vis_regions,vis_image_regions,allImage) |
| 235 | Display *disp; |
| 236 | Window srcRootWinid; /* root win on which grab was done */ |
| 237 | int32_t x; /* root rel UL corner of bounding box of grab */ |
| 238 | int32_t y; |
| 239 | uint32_t width; /* size of bounding box of grab */ |
| 240 | uint32_t height; |
| 241 | int32_t *transparentOverlays ; |
| 242 | int32_t *numVisuals; |
| 243 | XVisualInfo **pVisuals; |
| 244 | int32_t *numOverlayVisuals; |
| 245 | OverlayInfo **pOverlayVisuals; |
| 246 | int32_t *numImageVisuals; |
| 247 | XVisualInfo ***pImageVisuals; |
| 248 | list_ptr *vis_regions; /* list of regions to read from */ |
| 249 | list_ptr *vis_image_regions ; |
| 250 | int32_t *allImage ; |
| 251 | { |
| 252 | int32_t hasNonDefault; |
| 253 | XRectangle bbox; /* bounding box of grabbed area */ |
| 254 | |
| 255 | |
| 256 | /* Java uses 32-bit ints for coordinates, but XRectangles use 16-bit shorts. |
| 257 | * Hope nobody passes in too big a coordinate */ |
| 258 | |
| 259 | bbox.x = (short) x; /* init X rect for bounding box */ |
| 260 | bbox.y = (short) y; |
| 261 | bbox.width = (unsigned short) width; |
| 262 | bbox.height = (unsigned short) height; |
| 263 | |
| 264 | GetXVisualInfo(disp,DefaultScreen(disp), |
| 265 | transparentOverlays, |
| 266 | numVisuals, pVisuals, |
| 267 | numOverlayVisuals, pOverlayVisuals, |
| 268 | numImageVisuals, pImageVisuals); |
| 269 | |
| 270 | *vis_regions = *vis_image_regions = NULL ; |
| 271 | if ((*vis_regions = make_region_list( disp, srcRootWinid, &bbox, |
| 272 | &hasNonDefault, *numImageVisuals, |
| 273 | *pImageVisuals, allImage)) == NULL) |
| 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(disp,reg_image,srcw,srch,reg, |
| 294 | target_image,dst_x,dst_y) |
| 295 | Display *disp; |
| 296 | XImage *reg_image,*target_image ; |
| 297 | image_region_type *reg; |
| 298 | int32_t srcw,srch,dst_x , dst_y ; |
| 299 | { |
| 300 | int32_t ncolors; |
| 301 | int32_t i,j,old_pixel,new_pixel,red_ind,green_ind,blue_ind ; |
| 302 | XColor *colors; |
| 303 | int32_t rShift,gShift,bShift; |
| 304 | int32_t targetBytesPerLine ; |
| 305 | |
| 306 | ncolors = QueryColorMap(disp,reg->cmap,reg->vis,&colors, |
| 307 | &rShift,&gShift,&bShift) ; |
| 308 | |
| 309 | targetBytesPerLine = target_image->bytes_per_line; |
| 310 | |
| 311 | switch (reg->vis->class) { |
| 312 | case TrueColor : |
| 313 | for(i=0 ; i < srch ; i++) |
| 314 | { |
| 315 | for(j=0 ; j < srcw ; j++) |
| 316 | { |
| 317 | old_pixel = (int32_t) XGetPixel(reg_image,j,i) ; |
| 318 | |
| 319 | /* commented out since not using server RGB masks in all true color modes |
| 320 | * causes the R and B values to be swapped around on some X servers |
| 321 | * - robi.khan@eng 9/7/1999 |
| 322 | * if( reg->vis->map_entries == 16) { |
| 323 | */ |
| 324 | red_ind = (old_pixel & reg->vis->red_mask) >> rShift ; |
| 325 | green_ind = (old_pixel & reg->vis->green_mask) >> gShift ; |
| 326 | blue_ind = (old_pixel & reg->vis->blue_mask) >> bShift ; |
| 327 | |
| 328 | new_pixel = ( |
| 329 | ((colors[red_ind].red >> 8) << RED_SHIFT) |
| 330 | |((colors[green_ind].green >> 8) << GREEN_SHIFT) |
| 331 | |((colors[blue_ind].blue >> 8) << BLUE_SHIFT) |
| 332 | ); |
| 333 | /* } |
| 334 | * else |
| 335 | * new_pixel = old_pixel; |
| 336 | */ |
| 337 | |
| 338 | XPutPixel(target_image,dst_x+j, dst_y+i,new_pixel); |
| 339 | |
| 340 | } |
| 341 | } |
| 342 | break; |
| 343 | case DirectColor : |
| 344 | for(i=0 ; i < srch ; i++) |
| 345 | { |
| 346 | for(j=0 ; j < srcw ; j++) |
| 347 | { |
| 348 | old_pixel = (int32_t) XGetPixel(reg_image,j,i) ; |
| 349 | red_ind = (old_pixel & reg->vis->red_mask) >> rShift ; |
| 350 | green_ind = (old_pixel & reg->vis->green_mask) >> gShift ; |
| 351 | blue_ind = (old_pixel & reg->vis->blue_mask) >> bShift ; |
| 352 | |
| 353 | new_pixel = ( |
| 354 | ((colors[red_ind].red >> 8) << RED_SHIFT) |
| 355 | |((colors[green_ind].green >> 8) << GREEN_SHIFT) |
| 356 | |((colors[blue_ind].blue >> 8) << BLUE_SHIFT) |
| 357 | ); |
| 358 | XPutPixel(target_image,dst_x+j, dst_y+i,new_pixel); |
| 359 | |
| 360 | } |
| 361 | } |
| 362 | break; |
| 363 | default : |
| 364 | for(i=0 ; i < srch ; i++) |
| 365 | { |
| 366 | for(j=0 ; j < srcw ; j++) |
| 367 | { |
| 368 | old_pixel = (int32_t) XGetPixel(reg_image,j,i) ; |
| 369 | |
| 370 | new_pixel = ( |
| 371 | ((colors[old_pixel].red >> 8) << RED_SHIFT) |
| 372 | |((colors[old_pixel].green >> 8) << GREEN_SHIFT) |
| 373 | |((colors[old_pixel].blue >> 8) << BLUE_SHIFT) |
| 374 | ); |
| 375 | XPutPixel(target_image,dst_x+j, dst_y+i,new_pixel); |
| 376 | |
| 377 | } |
| 378 | } |
| 379 | break; |
| 380 | } |
| 381 | |
| 382 | /* Fix memory leak by freeing colors |
| 383 | * - robi.khan@eng 9/22/1999 |
| 384 | */ |
| 385 | free(colors); |
| 386 | } |
| 387 | |
| 388 | static XImage * |
| 389 | ReadRegionsInList(disp,fakeVis,depth,format,width,height,bbox,regions) |
| 390 | Display *disp ; |
| 391 | Visual *fakeVis ; |
| 392 | int32_t depth , width , height ; |
| 393 | int32_t format ; |
| 394 | XRectangle bbox; /* bounding box of grabbed area */ |
| 395 | list_ptr regions;/* list of regions to read from */ |
| 396 | { |
| 397 | image_region_type *reg; |
| 398 | int32_t dst_x, dst_y; /* where in pixmap to write (UL) */ |
| 399 | int32_t diff; |
| 400 | |
| 401 | XImage *reg_image,*ximage ; |
| 402 | int32_t srcRect_x,srcRect_y,srcRect_width,srcRect_height ; |
| 403 | int32_t rem ; |
| 404 | int32_t bytes_per_line; |
| 405 | int32_t bitmap_unit; |
| 406 | |
| 407 | bitmap_unit = sizeof (long); |
| 408 | if (format == ZPixmap) |
| 409 | bytes_per_line = width*depth/8; |
| 410 | else |
| 411 | bytes_per_line = width/8; |
| 412 | |
| 413 | |
| 414 | /* Find out how many more bytes are required for padding so that |
| 415 | ** bytes per scan line will be multiples of bitmap_unit bits */ |
| 416 | if (format == ZPixmap) { |
| 417 | rem = (bytes_per_line*8)%bitmap_unit; |
| 418 | if (rem) |
| 419 | bytes_per_line += (rem/8 + 1); |
| 420 | } |
| 421 | |
| 422 | ximage = XCreateImage(disp,fakeVis,(uint32_t) depth,format,0,NULL, |
| 423 | (uint32_t)width,(uint32_t)height,8,0); |
| 424 | |
| 425 | bytes_per_line = ximage->bytes_per_line; |
| 426 | |
| 427 | if (format == ZPixmap) |
| 428 | ximage->data = malloc(height*bytes_per_line); |
| 429 | else |
| 430 | ximage->data = malloc(height*bytes_per_line*depth); |
| 431 | |
| 432 | ximage->bits_per_pixel = depth; /** Valid only if format is ZPixmap ***/ |
| 433 | |
| 434 | for (reg = (image_region_type *) first_in_list( regions); reg; |
| 435 | reg = (image_region_type *) next_in_list( regions)) |
| 436 | { |
| 437 | int32_t rect; |
| 438 | struct my_XRegion *vis_reg; |
| 439 | vis_reg = (struct my_XRegion *)(reg->visible_region); |
| 440 | for (rect = 0; |
| 441 | rect < vis_reg->numRects; |
| 442 | rect++) |
| 443 | { |
| 444 | /** ------------------------------------------------------------------------ |
| 445 | Intersect bbox with visible part of region giving src rect & output |
| 446 | location. Width is the min right side minus the max left side. |
| 447 | Similar for height. Offset src rect so x,y are relative to |
| 448 | origin of win, not the root-relative visible rect of win. |
| 449 | ------------------------------------------------------------------------ **/ |
| 450 | srcRect_width = MIN( vis_reg->rects[rect].x2, bbox.width + bbox.x) |
| 451 | - MAX( vis_reg->rects[rect].x1, bbox.x); |
| 452 | |
| 453 | srcRect_height = MIN( vis_reg->rects[rect].y2, bbox.height + bbox.y) |
| 454 | - MAX( vis_reg->rects[rect].y1, bbox.y); |
| 455 | |
| 456 | diff = bbox.x - vis_reg->rects[rect].x1; |
| 457 | srcRect_x = MAX( 0, diff) + (vis_reg->rects[rect].x1 - reg->x_rootrel - reg->border); |
| 458 | dst_x = MAX( 0, -diff) ; |
| 459 | diff = bbox.y - vis_reg->rects[rect].y1; |
| 460 | srcRect_y = MAX( 0, diff) + (vis_reg->rects[rect].y1 - reg->y_rootrel - reg->border); |
| 461 | dst_y = MAX( 0, -diff) ; |
| 462 | reg_image = XGetImage(disp,reg->win,srcRect_x,srcRect_y, |
| 463 | (uint32_t) srcRect_width, (uint32_t) srcRect_height,AllPlanes,format) ; |
| 464 | TransferImage(disp,reg_image,srcRect_width, |
| 465 | srcRect_height,reg,ximage,dst_x,dst_y) ; |
| 466 | XDestroyImage(reg_image); |
| 467 | } |
| 468 | } |
| 469 | return ximage ; |
| 470 | } |
| 471 | |
| 472 | |
| 473 | /** ------------------------------------------------------------------------ |
| 474 | ------------------------------------------------------------------------ **/ |
| 475 | |
| 476 | XImage *ReadAreaToImage(disp, srcRootWinid, x, y, width, height, |
| 477 | numVisuals,pVisuals,numOverlayVisuals,pOverlayVisuals,numImageVisuals, |
| 478 | pImageVisuals,vis_regions,vis_image_regions,format,allImage) |
| 479 | Display *disp; |
| 480 | Window srcRootWinid; /* root win on which grab was done */ |
| 481 | int32_t x; /* root rel UL corner of bounding box of grab */ |
| 482 | int32_t y; |
| 483 | uint32_t width; /* size of bounding box of grab */ |
| 484 | uint32_t height; |
| 485 | /** int32_t transparentOverlays; ***/ |
| 486 | int32_t numVisuals; |
| 487 | XVisualInfo *pVisuals; |
| 488 | int32_t numOverlayVisuals; |
| 489 | OverlayInfo *pOverlayVisuals; |
| 490 | int32_t numImageVisuals; |
| 491 | XVisualInfo **pImageVisuals; |
| 492 | list_ptr vis_regions; /* list of regions to read from */ |
| 493 | list_ptr vis_image_regions ;/* list of regions to read from */ |
| 494 | int32_t format; |
| 495 | int32_t allImage ; |
| 496 | { |
| 497 | image_region_type *reg; |
| 498 | XRectangle bbox; /* bounding box of grabbed area */ |
| 499 | int32_t depth ; |
| 500 | XImage *ximage, *ximage_ipm ; |
| 501 | Visual fakeVis ; |
| 502 | int32_t x1, y1; |
| 503 | XImage *image; |
| 504 | unsigned char *pmData , *ipmData ; |
| 505 | int32_t transparentColor, transparentType; |
| 506 | int32_t srcRect_x,srcRect_y,srcRect_width,srcRect_height ; |
| 507 | int32_t diff ; |
| 508 | int32_t dst_x, dst_y; /* where in pixmap to write (UL) */ |
| 509 | int32_t pixel; |
| 510 | |
| 511 | bbox.x = (short) x; /* init X rect for bounding box */ |
| 512 | bbox.y = (short) y; |
| 513 | bbox.width = (unsigned short) width; |
| 514 | bbox.height = (unsigned short) height; |
| 515 | ximage_ipm = NULL; |
| 516 | |
| 517 | |
| 518 | initFakeVisual(&fakeVis) ; |
| 519 | |
| 520 | depth = 24 ; |
| 521 | ximage = ReadRegionsInList(disp,&fakeVis,depth,format, |
| 522 | (int32_t) width, (int32_t) height, bbox,vis_regions) ; |
| 523 | |
| 524 | pmData = (unsigned char *)ximage -> data ; |
| 525 | |
| 526 | /* if transparency possible do it again, but this time for image planes only */ |
| 527 | if (vis_image_regions && (vis_image_regions->next) && !allImage) |
| 528 | { |
| 529 | ximage_ipm = ReadRegionsInList(disp,&fakeVis,depth,format, |
| 530 | (int32_t) width, (int32_t) height,bbox,vis_image_regions) ; |
| 531 | ipmData = (unsigned char *)ximage_ipm -> data ; |
| 532 | } |
| 533 | /* Now tranverse the overlay visual windows and test for transparency index. */ |
| 534 | /* If you find one, subsitute the value from the matching image plane pixmap. */ |
| 535 | |
| 536 | for (reg = (image_region_type *) first_in_list( vis_regions); reg; |
| 537 | reg = (image_region_type *) next_in_list( vis_regions)) |
| 538 | { |
| 539 | |
| 540 | if (src_in_overlay( reg, numOverlayVisuals, pOverlayVisuals, |
| 541 | &transparentColor, &transparentType)) |
| 542 | { |
| 543 | int32_t test = 0 ; |
| 544 | srcRect_width = MIN( reg->width + reg->x_vis, bbox.width + bbox.x) |
| 545 | - MAX( reg->x_vis, bbox.x); |
| 546 | srcRect_height = MIN( reg->height + reg->y_vis, bbox.height |
| 547 | + bbox.y) - MAX( reg->y_vis, bbox.y); |
| 548 | diff = bbox.x - reg->x_vis; |
| 549 | srcRect_x = MAX( 0, diff) + (reg->x_vis - reg->x_rootrel - reg->border); |
| 550 | dst_x = MAX( 0, -diff) ; |
| 551 | diff = bbox.y - reg->y_vis; |
| 552 | srcRect_y = MAX( 0, diff) + (reg->y_vis - reg->y_rootrel - reg->border); |
| 553 | dst_y = MAX( 0, -diff) ; |
| 554 | /* let's test some pixels for transparency */ |
| 555 | image = XGetImage(disp, reg->win, srcRect_x, srcRect_y, |
| 556 | (uint32_t) srcRect_width, (uint32_t) srcRect_height, |
| 557 | 0xffffffff, ZPixmap); |
| 558 | |
| 559 | /* let's assume byte per pixel for overlay image for now */ |
| 560 | if ((image->depth == 8) && (transparentType == TransparentPixel)) |
| 561 | { |
| 562 | unsigned char *pixel_ptr; |
| 563 | unsigned char *start_of_line = (unsigned char *) image->data; |
| 564 | |
| 565 | for (y1 = 0; y1 < srcRect_height; y1++) { |
| 566 | pixel_ptr = start_of_line; |
| 567 | for (x1 = 0; x1 < srcRect_width; x1++) |
| 568 | { |
| 569 | if (*pixel_ptr++ == transparentColor) |
| 570 | { |
| 571 | /* |
| 572 | *pmData++ = *ipmData++; |
| 573 | *pmData++ = *ipmData++; |
| 574 | *pmData++ = *ipmData++; |
| 575 | */ |
| 576 | pixel = (int32_t) XGetPixel(ximage_ipm,dst_x+x1,dst_y+y1) ; |
| 577 | XPutPixel(ximage,dst_x+x1, dst_y+y1,(unsigned long)pixel); |
| 578 | |
| 579 | if(!test){ |
| 580 | test = 1 ; |
| 581 | } |
| 582 | } |
| 583 | /* |
| 584 | else { |
| 585 | pmData +=3; |
| 586 | ipmData +=3; |
| 587 | } |
| 588 | */ |
| 589 | } |
| 590 | start_of_line += image->bytes_per_line; |
| 591 | } |
| 592 | } else { |
| 593 | if (transparentType == TransparentPixel) { |
| 594 | for (y1 = 0; y1 < srcRect_height; y1++) { |
| 595 | for (x1 = 0; x1 < srcRect_width; x1++) |
| 596 | { |
| 597 | int32_t pixel_value = (int32_t) XGetPixel(image, x1, y1); |
| 598 | if (pixel_value == transparentColor) |
| 599 | { |
| 600 | /* |
| 601 | *pmData++ = *ipmData++; |
| 602 | *pmData++ = *ipmData++; |
| 603 | *pmData++ = *ipmData++; |
| 604 | */ |
| 605 | pixel = (int32_t) XGetPixel(ximage_ipm,dst_x+x1,dst_y+y1) ; |
| 606 | XPutPixel(ximage,dst_x+x1, dst_y+y1,(unsigned long)pixel); |
| 607 | if(!test){ |
| 608 | test = 1 ; |
| 609 | } |
| 610 | } |
| 611 | /* |
| 612 | else { |
| 613 | pmData +=3; |
| 614 | ipmData +=3; |
| 615 | } |
| 616 | */ |
| 617 | } |
| 618 | } |
| 619 | } else { |
| 620 | for (y1 = 0; y1 < srcRect_height; y1++) { |
| 621 | for (x1 = 0; x1 < srcRect_width; x1++) |
| 622 | { |
| 623 | int32_t pixel_value = (int32_t) XGetPixel(image, x1, y1); |
| 624 | if (pixel_value & transparentColor) |
| 625 | { |
| 626 | /* |
| 627 | *pmData++ = *ipmData++; |
| 628 | *pmData++ = *ipmData++; |
| 629 | *pmData++ = *ipmData++; |
| 630 | */ |
| 631 | pixel = (int32_t) XGetPixel(ximage_ipm,dst_x+x1, |
| 632 | dst_y+y1) ; |
| 633 | XPutPixel(ximage,dst_x+x1, dst_y+y1,(unsigned long)pixel); |
| 634 | if(!test){ |
| 635 | test = 1 ; |
| 636 | } |
| 637 | } |
| 638 | /* |
| 639 | else { |
| 640 | pmData +=3; |
| 641 | ipmData +=3; |
| 642 | } |
| 643 | */ |
| 644 | } |
| 645 | } |
| 646 | } |
| 647 | } |
| 648 | XDestroyImage (image); |
| 649 | } /* end of src_in_overlay */ |
| 650 | } /** end transparency **/ |
| 651 | if (ximage_ipm != NULL) { |
| 652 | XDestroyImage(ximage_ipm); |
| 653 | } |
| 654 | destroy_region_list( vis_regions); |
| 655 | if (vis_image_regions) destroy_region_list( vis_image_regions ); |
| 656 | FreeXVisualInfo(pVisuals, pOverlayVisuals, pImageVisuals); |
| 657 | XSync(disp, 0); |
| 658 | |
| 659 | return ximage; |
| 660 | } |
| 661 | |
| 662 | /** ------------------------------------------------------------------------ |
| 663 | Creates a list of the subwindows of a given window which have a |
| 664 | different visual than their parents. The function is recursive. |
| 665 | This list is used in make_region_list(), which coalesces the |
| 666 | windows with the same visual into a region. |
| 667 | image_wins must point to an existing list struct that's already |
| 668 | been zeroed (zero_list()). |
| 669 | ------------------------------------------------------------------------ **/ |
| 670 | static void make_src_list( disp, image_wins, bbox, curr, x_rootrel, y_rootrel, |
| 671 | curr_attrs, pclip) |
| 672 | Display *disp; |
| 673 | list_ptr image_wins; |
| 674 | XRectangle *bbox; /* bnding box of area we want */ |
| 675 | Window curr; |
| 676 | int32_t x_rootrel; /* pos of curr WRT root */ |
| 677 | int32_t y_rootrel; |
| 678 | XWindowAttributes *curr_attrs; |
| 679 | XRectangle *pclip; /* visible part of curr, not */ |
| 680 | /* obscurred by ancestors */ |
| 681 | { |
| 682 | XWindowAttributes child_attrs; |
| 683 | Window root, parent, *child; /* variables for XQueryTree() */ |
| 684 | Window *save_child_list; /* variables for XQueryTree() */ |
| 685 | uint32_t nchild; /* variables for XQueryTree() */ |
| 686 | XRectangle child_clip; /* vis part of child */ |
| 687 | int32_t curr_clipX, curr_clipY, curr_clipRt, curr_clipBt; |
| 688 | |
| 689 | /* check that win is mapped & not outside bounding box */ |
| 690 | if (curr_attrs->map_state == IsViewable && |
| 691 | curr_attrs->class == InputOutput && |
| 692 | !( pclip->x >= (bbox->x + bbox->width) || |
| 693 | pclip->y >= (bbox->y + bbox->height) || |
| 694 | (pclip->x + pclip->width) <= bbox->x || |
| 695 | (pclip->y + pclip->height) <= bbox->y)) { |
| 696 | |
| 697 | XQueryTree( disp, curr, &root, &parent, &child, &nchild ); |
| 698 | save_child_list = child; /* so we can free list when we're done */ |
| 699 | add_window_to_list( image_wins, curr, x_rootrel, y_rootrel, |
| 700 | (int32_t) pclip->x, (int32_t) pclip->y, |
| 701 | (int32_t) pclip->width, (int32_t) pclip->height, |
| 702 | curr_attrs->border_width,curr_attrs->visual, |
| 703 | curr_attrs->colormap, parent); |
| 704 | |
| 705 | |
| 706 | /** ------------------------------------------------------------------------ |
| 707 | set RR coords of right (Rt), left (X), bottom (Bt) and top (Y) |
| 708 | of rect we clip all children by. This is our own clip rect (pclip) |
| 709 | inflicted on us by our parent plus our own borders. Within the |
| 710 | child loop, we figure the clip rect for each child by adding in |
| 711 | it's rectangle (not taking into account the child's borders). |
| 712 | ------------------------------------------------------------------------ **/ |
| 713 | curr_clipX = MAX( pclip->x, x_rootrel + curr_attrs->border_width); |
| 714 | curr_clipY = MAX( pclip->y, y_rootrel + curr_attrs->border_width); |
| 715 | curr_clipRt = MIN(pclip->x + pclip->width, |
| 716 | x_rootrel + curr_attrs->width + 2 * curr_attrs->border_width); |
| 717 | |
| 718 | curr_clipBt = MIN(pclip->y + pclip->height, |
| 719 | y_rootrel + curr_attrs->height + 2 * curr_attrs->border_width); |
| 720 | |
| 721 | |
| 722 | while (nchild--) { |
| 723 | int32_t new_width, new_height; |
| 724 | int32_t child_xrr, child_yrr; /* root relative x & y of child */ |
| 725 | |
| 726 | XGetWindowAttributes( disp, *child, &child_attrs); |
| 727 | |
| 728 | /* intersect parent & child clip rects */ |
| 729 | child_xrr = x_rootrel + child_attrs.x + curr_attrs->border_width; |
| 730 | child_clip.x = (short) MAX( curr_clipX, child_xrr); |
| 731 | new_width = MIN(curr_clipRt, |
| 732 | child_xrr + child_attrs.width + |
| 733 | 2 * child_attrs.border_width) - child_clip.x; |
| 734 | |
| 735 | if (new_width >= 0) { |
| 736 | child_clip.width = (unsigned short) new_width; |
| 737 | |
| 738 | child_yrr = y_rootrel + child_attrs.y + |
| 739 | curr_attrs->border_width; |
| 740 | child_clip.y = (short) MAX( curr_clipY, child_yrr); |
| 741 | new_height = MIN(curr_clipBt, |
| 742 | child_yrr + (int32_t) child_attrs.height + |
| 743 | 2 * child_attrs.border_width) - child_clip.y; |
| 744 | |
| 745 | if (new_height >= 0) { |
| 746 | child_clip.height = (unsigned short) new_height; |
| 747 | make_src_list( disp, image_wins, bbox, *child, |
| 748 | child_xrr, child_yrr, |
| 749 | &child_attrs, &child_clip); |
| 750 | } |
| 751 | } |
| 752 | child++; |
| 753 | } |
| 754 | XFree( save_child_list); |
| 755 | } |
| 756 | } |
| 757 | |
| 758 | |
| 759 | /** ------------------------------------------------------------------------ |
| 760 | This function creates a list of regions which tile a specified |
| 761 | window. Each region contains all visible portions of the window |
| 762 | which are drawn with the same visual. For example, if the |
| 763 | window consists of subwindows of two different visual types, |
| 764 | there will be two regions in the list. |
| 765 | Returns a pointer to the list. |
| 766 | ------------------------------------------------------------------------ **/ |
| 767 | static list_ptr make_region_list( disp, win, bbox, hasNonDefault, |
| 768 | numImageVisuals, pImageVisuals, allImage) |
| 769 | Display *disp; |
| 770 | Window win; |
| 771 | XRectangle *bbox; |
| 772 | int32_t *hasNonDefault; |
| 773 | int32_t numImageVisuals; |
| 774 | XVisualInfo **pImageVisuals; |
| 775 | int32_t *allImage; |
| 776 | { |
| 777 | XWindowAttributes win_attrs; |
| 778 | list image_wins; |
| 779 | list_ptr image_regions; |
| 780 | list_ptr srcs_left; |
| 781 | image_region_type *new_reg; |
| 782 | image_win_type *base_src, *src; |
| 783 | Region bbox_region = XCreateRegion(); |
| 784 | XRectangle clip; |
| 785 | int32_t image_only; |
| 786 | |
| 787 | int32_t count=0 ; |
| 788 | |
| 789 | *hasNonDefault = False; |
| 790 | XUnionRectWithRegion( bbox, bbox_region, bbox_region); |
| 791 | XGetWindowAttributes( disp, win, &win_attrs); |
| 792 | |
| 793 | zero_list( &image_wins); |
| 794 | clip.x = 0; |
| 795 | clip.y = 0; |
| 796 | clip.width = (unsigned short) win_attrs.width; |
| 797 | clip.height = (unsigned short) win_attrs.height; |
| 798 | make_src_list( disp, &image_wins, bbox, win, |
| 799 | 0 /* x_rootrel */, 0 /* y_rootrel */, &win_attrs, &clip); |
| 800 | |
| 801 | image_regions = new_list(); |
| 802 | image_only = (*allImage) ? True:False; |
| 803 | |
| 804 | for (base_src = (image_win_type *) first_in_list( &image_wins); base_src; |
| 805 | base_src = (image_win_type *) next_in_list( &image_wins)) |
| 806 | { |
| 807 | /* test for image visual */ |
| 808 | if (!image_only || src_in_image(base_src, numImageVisuals, pImageVisuals)) |
| 809 | { |
| 810 | /* find a window whose visual hasn't been put in list yet */ |
| 811 | if (!src_in_region_list( base_src, image_regions)) |
| 812 | { |
| 813 | if (! (new_reg = (image_region_type *) |
| 814 | malloc( sizeof( image_region_type)))) { |
| 815 | return (list_ptr) NULL; |
| 816 | } |
| 817 | count++; |
| 818 | |
| 819 | new_reg->visible_region = XCreateRegion(); |
| 820 | new_reg->win = base_src->win; |
| 821 | new_reg->vis = base_src->vis; |
| 822 | new_reg->cmap = base_src->cmap; |
| 823 | new_reg->x_rootrel = base_src->x_rootrel; |
| 824 | new_reg->y_rootrel = base_src->y_rootrel; |
| 825 | new_reg->x_vis = base_src->x_vis; |
| 826 | new_reg->y_vis = base_src->y_vis; |
| 827 | new_reg->width = base_src->width; |
| 828 | new_reg->height = base_src->height; |
| 829 | new_reg->border = base_src->border_width; |
| 830 | |
| 831 | srcs_left = (list_ptr) dup_list_head( &image_wins, START_AT_CURR); |
| 832 | for (src = (image_win_type *) first_in_list( srcs_left); src; |
| 833 | src = (image_win_type *) next_in_list( srcs_left)) { |
| 834 | if (SAME_REGIONS( base_src, src)) { |
| 835 | add_rect_to_image_region( new_reg, src->x_vis, src->y_vis, |
| 836 | src->width, src->height); |
| 837 | } |
| 838 | else { |
| 839 | if (!image_only || src_in_image(src, numImageVisuals, pImageVisuals)) |
| 840 | { |
| 841 | subtr_rect_from_image_region( new_reg, src->x_vis, |
| 842 | src->y_vis, src->width, src->height); |
| 843 | } |
| 844 | } |
| 845 | } |
| 846 | XIntersectRegion( bbox_region, new_reg->visible_region, |
| 847 | new_reg->visible_region); |
| 848 | if (! XEmptyRegion( new_reg->visible_region)) { |
| 849 | add_to_list( image_regions, new_reg); |
| 850 | if (new_reg->vis != DefaultVisualOfScreen( win_attrs.screen) || |
| 851 | new_reg->cmap != DefaultColormapOfScreen( |
| 852 | win_attrs.screen)) { |
| 853 | *hasNonDefault = True; |
| 854 | } |
| 855 | } |
| 856 | else { |
| 857 | XDestroyRegion( new_reg->visible_region); |
| 858 | free( (void *) new_reg); |
| 859 | } |
| 860 | } |
| 861 | } else *allImage = 0; |
| 862 | } |
| 863 | delete_list( &image_wins, True); |
| 864 | XDestroyRegion( bbox_region); |
| 865 | return image_regions; |
| 866 | } |
| 867 | /** ------------------------------------------------------------------------ |
| 868 | Destructor called from destroy_region_list(). |
| 869 | ------------------------------------------------------------------------ **/ |
| 870 | void destroy_image_region( image_region) |
| 871 | image_region_type *image_region; |
| 872 | { |
| 873 | XDestroyRegion( image_region->visible_region); |
| 874 | free( (void *) image_region); |
| 875 | } |
| 876 | |
| 877 | /** ------------------------------------------------------------------------ |
| 878 | Destroys the region list, destroying all the regions contained in it. |
| 879 | ------------------------------------------------------------------------ **/ |
| 880 | static void destroy_region_list( rlist) |
| 881 | list_ptr rlist; |
| 882 | { |
| 883 | delete_list_destroying( rlist, (DESTRUCT_FUNC_PTR)destroy_image_region); |
| 884 | } |
| 885 | |
| 886 | |
| 887 | /** ------------------------------------------------------------------------ |
| 888 | Subtracts the specified rectangle from the region in image_region. |
| 889 | First converts the rectangle to a region of its own, since X |
| 890 | only provides a way to subtract one region from another, not a |
| 891 | rectangle from a region. |
| 892 | ------------------------------------------------------------------------ **/ |
| 893 | static void subtr_rect_from_image_region( image_region, x, y, width, height) |
| 894 | image_region_type *image_region; |
| 895 | int32_t x; |
| 896 | int32_t y; |
| 897 | int32_t width; |
| 898 | int32_t height; |
| 899 | { |
| 900 | XRectangle rect; |
| 901 | Region rect_region; |
| 902 | |
| 903 | rect_region = XCreateRegion(); |
| 904 | rect.x = (short)x; |
| 905 | rect.y = (short)y; |
| 906 | rect.width = (unsigned short)width; |
| 907 | rect.height = (unsigned short)height; |
| 908 | XUnionRectWithRegion( &rect, rect_region, rect_region); |
| 909 | XSubtractRegion( image_region->visible_region, rect_region, |
| 910 | image_region->visible_region); |
| 911 | XDestroyRegion( rect_region); |
| 912 | } |
| 913 | |
| 914 | |
| 915 | /** ------------------------------------------------------------------------ |
| 916 | Adds the specified rectangle to the region in image_region. |
| 917 | ------------------------------------------------------------------------ **/ |
| 918 | static void add_rect_to_image_region( image_region, x, y, width, height) |
| 919 | image_region_type *image_region; |
| 920 | int32_t x; |
| 921 | int32_t y; |
| 922 | int32_t width; |
| 923 | int32_t height; |
| 924 | { |
| 925 | XRectangle rect; |
| 926 | |
| 927 | rect.x = (short) x; |
| 928 | rect.y = (short) y; |
| 929 | rect.width = (unsigned short) width; |
| 930 | rect.height = (unsigned short) height; |
| 931 | XUnionRectWithRegion( &rect, image_region->visible_region, |
| 932 | image_region->visible_region); |
| 933 | } |
| 934 | |
| 935 | |
| 936 | /** ------------------------------------------------------------------------ |
| 937 | Returns TRUE if the given src's visual is already represented in |
| 938 | the image_regions list, FALSE otherwise. |
| 939 | ------------------------------------------------------------------------ **/ |
| 940 | static int32_t src_in_region_list( src, image_regions) |
| 941 | image_win_type *src; |
| 942 | list_ptr image_regions; |
| 943 | { |
| 944 | image_region_type *ir; |
| 945 | |
| 946 | for (ir = (image_region_type *) first_in_list( image_regions); ir; |
| 947 | ir = (image_region_type *) next_in_list( image_regions)) { |
| 948 | if (SAME_REGIONS( ir, src)) { |
| 949 | |
| 950 | return 1; |
| 951 | } |
| 952 | } |
| 953 | |
| 954 | return 0; |
| 955 | } |
| 956 | |
| 957 | |
| 958 | /** ------------------------------------------------------------------------ |
| 959 | Makes a new entry in image_wins with the given fields filled in. |
| 960 | ------------------------------------------------------------------------ **/ |
| 961 | static void add_window_to_list( image_wins, w, xrr, yrr, x_vis, y_vis, |
| 962 | width, height, border_width,vis, cmap, parent) |
| 963 | list_ptr image_wins; |
| 964 | Window w; |
| 965 | int32_t xrr; |
| 966 | int32_t yrr; |
| 967 | int32_t x_vis; |
| 968 | int32_t y_vis; |
| 969 | int32_t width; |
| 970 | int32_t height; |
| 971 | int32_t border_width; |
| 972 | Visual *vis; |
| 973 | Colormap cmap; |
| 974 | Window parent; |
| 975 | { |
| 976 | image_win_type *new_src; |
| 977 | |
| 978 | if ((new_src = (image_win_type *) malloc( sizeof( image_win_type))) == NULL) |
| 979 | |
| 980 | return; |
| 981 | |
| 982 | new_src->win = w; |
| 983 | new_src->x_rootrel = xrr; |
| 984 | new_src->y_rootrel = yrr; |
| 985 | new_src->x_vis = x_vis; |
| 986 | new_src->y_vis = y_vis; |
| 987 | new_src->width = width; |
| 988 | new_src->height = height; |
| 989 | new_src->border_width = border_width; |
| 990 | new_src->vis = vis; |
| 991 | new_src->cmap = cmap; |
| 992 | new_src->parent = parent; |
| 993 | add_to_list( image_wins, new_src); |
| 994 | } |
| 995 | |
| 996 | /** ------------------------------------------------------------------------ |
| 997 | Returns TRUE if the given src's visual is in the image planes, |
| 998 | FALSE otherwise. |
| 999 | ------------------------------------------------------------------------ **/ |
| 1000 | static int32_t src_in_image( src, numImageVisuals, pImageVisuals) |
| 1001 | image_win_type *src; |
| 1002 | int32_t numImageVisuals; |
| 1003 | XVisualInfo **pImageVisuals; |
| 1004 | { |
| 1005 | int32_t i; |
| 1006 | |
| 1007 | for (i = 0 ; i < numImageVisuals ; i++) |
| 1008 | { |
| 1009 | if (pImageVisuals[i]->visual == src->vis) |
| 1010 | return 1; |
| 1011 | } |
| 1012 | return 0; |
| 1013 | } |
| 1014 | |
| 1015 | |
| 1016 | /** ------------------------------------------------------------------------ |
| 1017 | Returns TRUE if the given src's visual is in the overlay planes |
| 1018 | and transparency is possible, FALSE otherwise. |
| 1019 | ------------------------------------------------------------------------ **/ |
| 1020 | static int32_t src_in_overlay( src, numOverlayVisuals, pOverlayVisuals, |
| 1021 | transparentColor, transparentType) |
| 1022 | image_region_type *src; |
| 1023 | int32_t numOverlayVisuals; |
| 1024 | OverlayInfo *pOverlayVisuals; |
| 1025 | int32_t *transparentColor; |
| 1026 | int32_t *transparentType; |
| 1027 | { |
| 1028 | int32_t i; |
| 1029 | |
| 1030 | for (i = 0 ; i < numOverlayVisuals ; i++) |
| 1031 | { |
| 1032 | if (((pOverlayVisuals[i].pOverlayVisualInfo)->visual == src->vis) |
| 1033 | && (pOverlayVisuals[i].transparentType != None)) |
| 1034 | { |
| 1035 | *transparentColor = pOverlayVisuals[i].value; |
| 1036 | *transparentType = pOverlayVisuals[i].transparentType; |
| 1037 | return 1; |
| 1038 | } |
| 1039 | |
| 1040 | else { |
| 1041 | } |
| 1042 | |
| 1043 | } |
| 1044 | return 0; |
| 1045 | } |
| 1046 | |
| 1047 | |
| 1048 | /********************** from wsutils.c ******************************/ |
| 1049 | |
| 1050 | /****************************************************************************** |
| 1051 | * |
| 1052 | * This file contains a set of example utility procedures; procedures that can |
| 1053 | * help a "window-smart" Starbase or PHIGS program determine information about |
| 1054 | * a device, and create image and overlay plane windows. To use these |
| 1055 | * utilities, #include "wsutils.h" and compile this file and link the results |
| 1056 | * with your program. |
| 1057 | * |
| 1058 | ******************************************************************************/ |
| 1059 | |
| 1060 | |
| 1061 | |
| 1062 | #define STATIC_GRAY 0x01 |
| 1063 | #define GRAY_SCALE 0x02 |
| 1064 | #define PSEUDO_COLOR 0x04 |
| 1065 | #define TRUE_COLOR 0x10 |
| 1066 | #define DIRECT_COLOR 0x11 |
| 1067 | |
| 1068 | |
| 1069 | static int32_t weCreateServerOverlayVisualsProperty = False; |
| 1070 | |
| 1071 | |
| 1072 | /****************************************************************************** |
| 1073 | * |
| 1074 | * GetXVisualInfo() |
| 1075 | * |
| 1076 | * This routine takes an X11 Display, screen number, and returns whether the |
| 1077 | * screen supports transparent overlays and three arrays: |
| 1078 | * |
| 1079 | * 1) All of the XVisualInfo struct's for the screen. |
| 1080 | * 2) All of the OverlayInfo struct's for the screen. |
| 1081 | * 3) An array of pointers to the screen's image plane XVisualInfo |
| 1082 | * structs. |
| 1083 | * |
| 1084 | * The code below obtains the array of all the screen's visuals, and obtains |
| 1085 | * the array of all the screen's overlay visual information. It then processes |
| 1086 | * the array of the screen's visuals, determining whether the visual is an |
| 1087 | * overlay or image visual. |
| 1088 | * |
| 1089 | * If the routine sucessfully obtained the visual information, it returns zero. |
| 1090 | * If the routine didn't obtain the visual information, it returns non-zero. |
| 1091 | * |
| 1092 | ******************************************************************************/ |
| 1093 | |
| 1094 | int32_t GetXVisualInfo(display, screen, transparentOverlays, |
| 1095 | numVisuals, pVisuals, |
| 1096 | numOverlayVisuals, pOverlayVisuals, |
| 1097 | numImageVisuals, pImageVisuals) |
| 1098 | |
| 1099 | Display *display; /* Which X server (aka "display"). */ |
| 1100 | int32_t screen; /* Which screen of the "display". */ |
| 1101 | int32_t *transparentOverlays; /* Non-zero if there's at least one |
| 1102 | * overlay visual and if at least one |
| 1103 | * of those supports a transparent |
| 1104 | * pixel. */ |
| 1105 | int32_t *numVisuals; /* Number of XVisualInfo struct's |
| 1106 | * pointed to to by pVisuals. */ |
| 1107 | XVisualInfo **pVisuals; /* All of the device's visuals. */ |
| 1108 | int32_t *numOverlayVisuals; /* Number of OverlayInfo's pointed |
| 1109 | * to by pOverlayVisuals. If this |
| 1110 | * number is zero, the device does |
| 1111 | * not have overlay planes. */ |
| 1112 | OverlayInfo **pOverlayVisuals; /* The device's overlay plane visual |
| 1113 | * information. */ |
| 1114 | int32_t *numImageVisuals; /* Number of XVisualInfo's pointed |
| 1115 | * to by pImageVisuals. */ |
| 1116 | XVisualInfo ***pImageVisuals; /* The device's image visuals. */ |
| 1117 | { |
| 1118 | XVisualInfo getVisInfo; /* Paramters of XGetVisualInfo */ |
| 1119 | int32_t mask; |
| 1120 | XVisualInfo *pVis, **pIVis; /* Faster, local copies */ |
| 1121 | OverlayInfo *pOVis; |
| 1122 | OverlayVisualPropertyRec *pOOldVis; |
| 1123 | int32_t nVisuals, nOVisuals; |
| 1124 | Atom overlayVisualsAtom; /* Parameters for XGetWindowProperty */ |
| 1125 | Atom actualType; |
| 1126 | unsigned long numLongs, bytesAfter; |
| 1127 | int32_t actualFormat; |
| 1128 | int32_t nImageVisualsAlloced; /* Values to process the XVisualInfo */ |
| 1129 | int32_t imageVisual; /* array */ |
| 1130 | |
| 1131 | |
| 1132 | /* First, get the list of visuals for this screen. */ |
| 1133 | getVisInfo.screen = screen; |
| 1134 | mask = VisualScreenMask; |
| 1135 | |
| 1136 | *pVisuals = XGetVisualInfo(display, mask, &getVisInfo, numVisuals); |
| 1137 | if ((nVisuals = *numVisuals) <= 0) |
| 1138 | { |
| 1139 | /* Return that the information wasn't sucessfully obtained: */ |
| 1140 | return(1); |
| 1141 | } |
| 1142 | pVis = *pVisuals; |
| 1143 | |
| 1144 | |
| 1145 | /* Now, get the overlay visual information for this screen. To obtain |
| 1146 | * this information, get the SERVER_OVERLAY_VISUALS property. |
| 1147 | */ |
| 1148 | overlayVisualsAtom = XInternAtom(display, "SERVER_OVERLAY_VISUALS", True); |
| 1149 | if (overlayVisualsAtom != None) |
| 1150 | { |
| 1151 | /* Since the Atom exists, we can request the property's contents. The |
| 1152 | * do-while loop makes sure we get the entire list from the X server. |
| 1153 | */ |
| 1154 | bytesAfter = 0; |
| 1155 | numLongs = sizeof(OverlayVisualPropertyRec) / 4; |
| 1156 | do |
| 1157 | { |
| 1158 | numLongs += bytesAfter * 4; |
| 1159 | XGetWindowProperty(display, RootWindow(display, screen), |
| 1160 | overlayVisualsAtom, 0, numLongs, False, |
| 1161 | overlayVisualsAtom, &actualType, &actualFormat, |
| 1162 | &numLongs, &bytesAfter, (unsigned char**) pOverlayVisuals); |
| 1163 | } while (bytesAfter > 0); |
| 1164 | |
| 1165 | |
| 1166 | /* Calculate the number of overlay visuals in the list. */ |
| 1167 | /* *numOverlayVisuals = numLongs / (sizeof(OverlayVisualPropertyRec) / 4); */ |
| 1168 | *numOverlayVisuals = numLongs / (sizeof(OverlayVisualPropertyRec) / sizeof(long)); |
| 1169 | } |
| 1170 | else |
| 1171 | { |
| 1172 | /* This screen doesn't have overlay planes. */ |
| 1173 | *numOverlayVisuals = 0; |
| 1174 | *pOverlayVisuals = NULL; |
| 1175 | *transparentOverlays = 0; |
| 1176 | } |
| 1177 | |
| 1178 | |
| 1179 | /* Process the pVisuals array. */ |
| 1180 | *numImageVisuals = 0; |
| 1181 | nImageVisualsAlloced = 1; |
| 1182 | pIVis = *pImageVisuals = (XVisualInfo **) malloc(sizeof(XVisualInfo *)); |
| 1183 | while (--nVisuals >= 0) |
| 1184 | { |
| 1185 | nOVisuals = *numOverlayVisuals; |
| 1186 | pOVis = *pOverlayVisuals; |
| 1187 | imageVisual = True; |
| 1188 | while (--nOVisuals >= 0) |
| 1189 | { |
| 1190 | pOOldVis = (OverlayVisualPropertyRec *) pOVis; |
| 1191 | if (pVis->visualid == pOOldVis->visualID) |
| 1192 | { |
| 1193 | imageVisual = False; |
| 1194 | pOVis->pOverlayVisualInfo = pVis; |
| 1195 | if (pOVis->transparentType == TransparentPixel) |
| 1196 | *transparentOverlays = 1; |
| 1197 | } |
| 1198 | pOVis++; |
| 1199 | } |
| 1200 | if (imageVisual) |
| 1201 | { |
| 1202 | if ((*numImageVisuals += 1) > nImageVisualsAlloced) |
| 1203 | { |
| 1204 | nImageVisualsAlloced++; |
| 1205 | *pImageVisuals = (XVisualInfo **) |
| 1206 | realloc(*pImageVisuals, (nImageVisualsAlloced * sizeof(XVisualInfo *))); |
| 1207 | pIVis = *pImageVisuals + (*numImageVisuals - 1); |
| 1208 | } |
| 1209 | *pIVis++ = pVis; |
| 1210 | } |
| 1211 | pVis++; |
| 1212 | } |
| 1213 | |
| 1214 | |
| 1215 | /* Return that the information was sucessfully obtained: */ |
| 1216 | return(0); |
| 1217 | |
| 1218 | } /* GetXVisualInfo() */ |
| 1219 | |
| 1220 | |
| 1221 | /****************************************************************************** |
| 1222 | * |
| 1223 | * FreeXVisualInfo() |
| 1224 | * |
| 1225 | * This routine frees the data that was allocated by GetXVisualInfo(). |
| 1226 | * |
| 1227 | ******************************************************************************/ |
| 1228 | |
| 1229 | void FreeXVisualInfo(pVisuals, pOverlayVisuals, pImageVisuals) |
| 1230 | |
| 1231 | XVisualInfo *pVisuals; |
| 1232 | OverlayInfo *pOverlayVisuals; |
| 1233 | XVisualInfo **pImageVisuals; |
| 1234 | { |
| 1235 | XFree(pVisuals); |
| 1236 | if (weCreateServerOverlayVisualsProperty) |
| 1237 | free(pOverlayVisuals); |
| 1238 | else |
| 1239 | XFree(pOverlayVisuals); |
| 1240 | free(pImageVisuals); |
| 1241 | |
| 1242 | } /* FreeXVisualInfo() */ |