1 /*********************************************************** 2 Copyright (c) 1993, Oracle and/or its affiliates. 3 4 Permission is hereby granted, free of charge, to any person obtaining a 5 copy of this software and associated documentation files (the "Software"), 6 to deal in the Software without restriction, including without limitation 7 the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 and/or sell copies of the Software, and to permit persons to whom the 9 Software is furnished to do so, subject to the following conditions: 10 11 The above copyright notice and this permission notice (including the next 12 paragraph) shall be included in all copies or substantial portions of the 13 Software. 14 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 DEALINGS IN THE SOFTWARE. 22 23 Copyright 1987, 1988, 1990 by Digital Equipment Corporation, Maynard, Massachusetts. 24 25 All Rights Reserved 26 27 Permission to use, copy, modify, and distribute this software and its 28 documentation for any purpose and without fee is hereby granted, 29 provided that the above copyright notice appear in all copies and that 30 both that copyright notice and this permission notice appear in 31 supporting documentation, and that the name of Digital not be 32 used in advertising or publicity pertaining to distribution of the 33 software without specific, written prior permission. 34 35 DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING 36 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL 37 DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR 38 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 39 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 40 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 41 SOFTWARE. 42 43 ******************************************************************/ 44 45 /* 46 47 Copyright 1987, 1988, 1990, 1994, 1998 The Open Group 48 49 Permission to use, copy, modify, distribute, and sell this software and its 50 documentation for any purpose is hereby granted without fee, provided that 51 the above copyright notice appear in all copies and that both that 52 copyright notice and this permission notice appear in supporting 53 documentation. 54 55 The above copyright notice and this permission notice shall be included in 56 all copies or substantial portions of the Software. 57 58 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 59 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 60 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 61 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 62 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 63 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 64 65 Except as contained in this notice, the name of The Open Group shall not be 66 used in advertising or otherwise to promote the sale, use or other dealings 67 in this Software without prior written authorization from The Open Group. 68 69 */ 70 71 #ifdef HAVE_CONFIG_H 72 #include <config.h> 73 #endif 74 #include "IntrinsicI.h" 75 76 typedef struct _GCrec { 77 unsigned char screen; /* Screen for GC */ 78 unsigned char depth; /* Depth for GC */ 79 char dashes; /* Dashes value */ 80 Pixmap clip_mask; /* Clip_mask value */ 81 Cardinal ref_count; /* # of shareholders */ 82 GC gc; /* The GC itself. */ 83 XtGCMask dynamic_mask; /* Writable values */ 84 XtGCMask unused_mask; /* Unused values */ 85 struct _GCrec *next; /* Next GC for this widgetkind. */ 86 } GCrec, *GCptr; 87 88 #define GCVAL(bit,mask,val,default) ((bit&mask) ? val : default) 89 90 #define CHECK(bit,comp,default) \ 91 if ((checkMask & bit) && \ 92 (GCVAL(bit,valueMask,v->comp,default) != gcv.comp)) return False 93 94 #define ALLGCVALS (GCFunction | GCPlaneMask | GCForeground | \ 95 GCBackground | GCLineWidth | GCLineStyle | \ 96 GCCapStyle | GCJoinStyle | GCFillStyle | \ 97 GCFillRule | GCTile | GCStipple | \ 98 GCTileStipXOrigin | GCTileStipYOrigin | \ 99 GCFont | GCSubwindowMode | GCGraphicsExposures | \ 100 GCClipXOrigin | GCClipYOrigin | GCDashOffset | \ 101 GCArcMode) 102 103 static Bool 104 Matches(Display *dpy, 105 GCptr ptr, 106 register XtGCMask valueMask, 107 register XGCValues *v, 108 XtGCMask readOnlyMask, 109 XtGCMask dynamicMask) 110 { 111 XGCValues gcv; 112 register XtGCMask checkMask; 113 114 if (readOnlyMask & ptr->dynamic_mask) 115 return False; 116 if (((ptr->dynamic_mask | ptr->unused_mask) & dynamicMask) != dynamicMask) 117 return False; 118 if (!XGetGCValues(dpy, ptr->gc, ALLGCVALS, &gcv)) 119 return False; 120 checkMask = readOnlyMask & ~ptr->unused_mask; 121 CHECK(GCForeground, foreground, 0); 122 CHECK(GCBackground, background, 1); 123 CHECK(GCFont, font, ~0UL); 124 CHECK(GCFillStyle, fill_style, FillSolid); 125 CHECK(GCLineWidth, line_width, 0); 126 CHECK(GCFunction, function, GXcopy); 127 CHECK(GCGraphicsExposures, graphics_exposures, True); 128 CHECK(GCTile, tile, ~0UL); 129 CHECK(GCSubwindowMode, subwindow_mode, ClipByChildren); 130 CHECK(GCPlaneMask, plane_mask, AllPlanes); 131 CHECK(GCLineStyle, line_style, LineSolid); 132 CHECK(GCCapStyle, cap_style, CapButt); 133 CHECK(GCJoinStyle, join_style, JoinMiter); 134 CHECK(GCFillRule, fill_rule, EvenOddRule); 135 CHECK(GCArcMode, arc_mode, ArcPieSlice); 136 CHECK(GCStipple, stipple, ~0UL); 137 CHECK(GCTileStipXOrigin, ts_x_origin, 0); 138 CHECK(GCTileStipYOrigin, ts_y_origin, 0); 139 CHECK(GCClipXOrigin, clip_x_origin, 0); 140 CHECK(GCClipYOrigin, clip_y_origin, 0); 141 CHECK(GCDashOffset, dash_offset, 0); 142 gcv.clip_mask = ptr->clip_mask; 143 CHECK(GCClipMask, clip_mask, None); 144 gcv.dashes = ptr->dashes; 145 CHECK(GCDashList, dashes, 4); 146 valueMask &= ptr->unused_mask | dynamicMask; 147 if (valueMask) { 148 XChangeGC(dpy, ptr->gc, valueMask, v); 149 if (valueMask & GCDashList) 150 ptr->dashes = v->dashes; 151 if (valueMask & GCClipMask) 152 ptr->clip_mask = v->clip_mask; 153 } 154 ptr->unused_mask &= ~(dynamicMask | readOnlyMask); 155 ptr->dynamic_mask |= dynamicMask; 156 return True; 157 } /* Matches */ 158 159 /* Called by CloseDisplay to free the per-display GC list */ 160 void 161 _XtGClistFree(Display *dpy, register XtPerDisplay pd) 162 { 163 GCptr GClist, next; 164 165 GClist = pd->GClist; 166 while (GClist) { 167 next = GClist->next; 168 XtFree((char *) GClist); 169 GClist = next; 170 } 171 if (pd->pixmap_tab) { 172 int i; 173 174 for (i = ScreenCount(dpy); --i >= 0;) { 175 if (pd->pixmap_tab[i]) 176 XtFree((char *) pd->pixmap_tab[i]); 177 } 178 XtFree((char *) pd->pixmap_tab); 179 } 180 } 181 182 /* 183 * Return a GC with the given values and characteristics. 184 */ 185 186 GC 187 XtAllocateGC(register Widget widget, 188 Cardinal depth, 189 XtGCMask valueMask, 190 XGCValues *values, 191 XtGCMask dynamicMask, 192 XtGCMask unusedMask) 193 { 194 register GCptr *prev; 195 register GCptr cur; 196 Screen *screen; 197 register Display *dpy; 198 register XtPerDisplay pd; 199 Drawable drawable; 200 Drawable *pixmaps; 201 XtGCMask readOnlyMask; 202 GC retval; 203 204 WIDGET_TO_APPCON(widget); 205 206 LOCK_APP(app); 207 LOCK_PROCESS; 208 if (!XtIsWidget(widget)) 209 widget = _XtWindowedAncestor(widget); 210 if (!depth) 211 depth = widget->core.depth; 212 screen = XtScreen(widget); 213 dpy = DisplayOfScreen(screen); 214 pd = _XtGetPerDisplay(dpy); 215 unusedMask &= ~valueMask; 216 readOnlyMask = ~(dynamicMask | unusedMask); 217 218 /* Search for existing GC that matches exactly */ 219 for (prev = &pd->GClist; (cur = *prev); prev = &cur->next) { 220 if (cur->depth == depth && 221 ScreenOfDisplay(dpy, cur->screen) == screen && 222 Matches(dpy, cur, valueMask, values, readOnlyMask, dynamicMask)) { 223 cur->ref_count++; 224 /* Move this GC to front of list */ 225 *prev = cur->next; 226 cur->next = pd->GClist; 227 pd->GClist = cur; 228 retval = cur->gc; 229 UNLOCK_PROCESS; 230 UNLOCK_APP(app); 231 return retval; 232 } 233 } 234 235 /* No matches, have to create a new one */ 236 cur = XtNew(GCrec); 237 cur->screen = (unsigned char) XScreenNumberOfScreen(screen); 238 cur->depth = (unsigned char) depth; 239 cur->ref_count = 1; 240 cur->dynamic_mask = dynamicMask; 241 cur->unused_mask = (unusedMask & ~dynamicMask); 242 cur->dashes = GCVAL(GCDashList, valueMask, values->dashes, 4); 243 cur->clip_mask = GCVAL(GCClipMask, valueMask, values->clip_mask, None); 244 drawable = 0; 245 if (depth == widget->core.depth) 246 drawable = XtWindow(widget); 247 if (!drawable && depth == (Cardinal) DefaultDepthOfScreen(screen)) 248 drawable = RootWindowOfScreen(screen); 249 if (!drawable) { 250 if (!pd->pixmap_tab) { 251 int n; 252 253 pd->pixmap_tab = XtMallocArray((Cardinal) ScreenCount(dpy), 254 (Cardinal) sizeof(Drawable *)); 255 for (n = 0; n < ScreenCount(dpy); n++) 256 pd->pixmap_tab[n] = NULL; 257 } 258 pixmaps = pd->pixmap_tab[cur->screen]; 259 if (!pixmaps) { 260 int max, n, *depths; 261 262 depths = XListDepths(dpy, cur->screen, &n); 263 n--; 264 max = depths[n]; 265 while (n--) { 266 if (depths[n] > max) 267 max = depths[n]; 268 } 269 XFree((char *) depths); 270 pixmaps = (Drawable *) __XtCalloc((unsigned) max, sizeof(Drawable)); 271 pd->pixmap_tab[cur->screen] = pixmaps; 272 } 273 drawable = pixmaps[cur->depth - 1]; 274 if (!drawable) { 275 drawable = XCreatePixmap(dpy, RootWindowOfScreen(screen), 1, 1, 276 cur->depth); 277 pixmaps[cur->depth - 1] = drawable; 278 } 279 } 280 cur->gc = XCreateGC(dpy, drawable, valueMask, values); 281 cur->next = pd->GClist; 282 pd->GClist = cur; 283 retval = cur->gc; 284 UNLOCK_PROCESS; 285 UNLOCK_APP(app); 286 return retval; 287 } /* XtAllocateGC */ 288 289 /* 290 * Return a read-only GC with the given values. 291 */ 292 293 GC 294 XtGetGC(register Widget widget, XtGCMask valueMask, XGCValues *values) 295 { 296 return XtAllocateGC(widget, 0, valueMask, values, 0, 0); 297 } /* XtGetGC */ 298 299 void 300 XtReleaseGC(Widget widget, register GC gc) 301 { 302 register GCptr cur, *prev; 303 Display *dpy; 304 XtPerDisplay pd; 305 306 WIDGET_TO_APPCON(widget); 307 308 LOCK_APP(app); 309 LOCK_PROCESS; 310 dpy = XtDisplayOfObject(widget); 311 pd = _XtGetPerDisplay(dpy); 312 313 for (prev = &pd->GClist; (cur = *prev); prev = &cur->next) { 314 if (cur->gc == gc) { 315 if (--(cur->ref_count) == 0) { 316 *prev = cur->next; 317 XFreeGC(dpy, gc); 318 XtFree((char *) cur); 319 } 320 break; 321 } 322 } 323 UNLOCK_PROCESS; 324 UNLOCK_APP(app); 325 } /* XtReleaseGC */ 326 327 /* The following interface is broken and supplied only for backwards 328 * compatibility. It will work properly in all cases only if there 329 * is exactly 1 Display created by the application. 330 */ 331 332 void 333 XtDestroyGC(register GC gc) 334 { 335 GCptr cur, *prev; 336 XtAppContext app; 337 338 LOCK_PROCESS; 339 app = _XtGetProcessContext()->appContextList; 340 /* This is awful; we have to search through all the lists 341 to find the GC. */ 342 for (; app; app = app->next) { 343 int i; 344 345 for (i = app->count; i;) { 346 Display *dpy = app->list[--i]; 347 XtPerDisplay pd = _XtGetPerDisplay(dpy); 348 349 for (prev = &pd->GClist; (cur = *prev); prev = &cur->next) { 350 if (cur->gc == gc) { 351 if (--(cur->ref_count) == 0) { 352 *prev = cur->next; 353 XFreeGC(dpy, gc); 354 XtFree((char *) cur); 355 } 356 UNLOCK_PROCESS; 357 return; 358 } 359 } 360 } 361 } 362 UNLOCK_PROCESS; 363 } /* XtDestroyGC */ 364
Indexes created Mon Jun 29 00:24:49 UTC 2026