src/texture.c

   1 /*
   2  *  Window Maker window manager
   3  *
   4  *  Copyright (c) 1997-2003 Alfredo K. Kojima
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License along
  17  *  with this program; if not, write to the Free Software Foundation, Inc.,
  18  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include "wconfig.h"
  22
  23 #include <X11/Xlib.h>
  24 #include <X11/Xutil.h>
  25
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29
  30 #include <wraster.h>
  31
  32 #include "WindowMaker.h"
  33 #include "texture.h"
  34 #include "window.h"
  35 #include "misc.h"
  36
  37
  38 static void bevelImage(RImage * image, int relief);
  39 static RImage * get_texture_image(WScreen *scr, const char *pixmap_file);
  40
  41 WTexSolid *wTextureMakeSolid(WScreen * scr, XColor * color)
  42 {
  43         WTexSolid *texture;
  44         int gcm;
  45         XGCValues gcv;
  46
  47         texture = wmalloc(sizeof(WTexture));
  48
  49         texture->type = WTEX_SOLID;
  50         texture->subtype = 0;
  51
  52         XAllocColor(dpy, scr->w_colormap, color);
  53         texture->normal = *color;
  54         if (color->red == 0 && color->blue == 0 && color->green == 0) {
  55                 texture->light.red = 0xb6da;
  56                 texture->light.green = 0xb6da;
  57                 texture->light.blue = 0xb6da;
  58                 texture->dim.red = 0x6185;
  59                 texture->dim.green = 0x6185;
  60                 texture->dim.blue = 0x6185;
  61         } else {
  62                 RColor rgb;
  63                 RHSVColor hsv, hsv2;
  64                 int v;
  65
  66                 rgb.red = color->red >> 8;
  67                 rgb.green = color->green >> 8;
  68                 rgb.blue = color->blue >> 8;
  69                 RRGBtoHSV(&rgb, &hsv);
  70                 RHSVtoRGB(&hsv, &rgb);
  71                 hsv2 = hsv;
  72
  73                 v = hsv.value * 16 / 10;
  74                 hsv.value = (v > 255 ? 255 : v);
  75                 RHSVtoRGB(&hsv, &rgb);
  76                 texture->light.red = rgb.red << 8;
  77                 texture->light.green = rgb.green << 8;
  78                 texture->light.blue = rgb.blue << 8;
  79
  80                 hsv2.value = hsv2.value / 2;
  81                 RHSVtoRGB(&hsv2, &rgb);
  82                 texture->dim.red = rgb.red << 8;
  83                 texture->dim.green = rgb.green << 8;
  84                 texture->dim.blue = rgb.blue << 8;
  85         }
  86         texture->dark.red = 0;
  87         texture->dark.green = 0;
  88         texture->dark.blue = 0;
  89         XAllocColor(dpy, scr->w_colormap, &texture->light);
  90         XAllocColor(dpy, scr->w_colormap, &texture->dim);
  91         XAllocColor(dpy, scr->w_colormap, &texture->dark);
  92
  93         gcm = GCForeground | GCBackground | GCGraphicsExposures;
  94         gcv.graphics_exposures = False;
  95
  96         gcv.background = gcv.foreground = texture->light.pixel;
  97         texture->light_gc = XCreateGC(dpy, scr->w_win, gcm, &gcv);
  98
  99         gcv.background = gcv.foreground = texture->dim.pixel;
 100         texture->dim_gc = XCreateGC(dpy, scr->w_win, gcm, &gcv);
 101
 102         gcv.background = gcv.foreground = texture->dark.pixel;
 103         texture->dark_gc = XCreateGC(dpy, scr->w_win, gcm, &gcv);
 104
 105         gcv.background = gcv.foreground = color->pixel;
 106         texture->normal_gc = XCreateGC(dpy, scr->w_win, gcm, &gcv);
 107
 108         return texture;
 109 }
 110
 111 static int dummyErrorHandler(Display * foo, XErrorEvent * bar)
 112 {
 113         /* Parameter not used, but tell the compiler that it is ok */
 114         (void) foo;
 115         (void) bar;
 116
 117         return 0;
 118 }
 119
 120 void wTextureDestroy(WScreen * scr, WTexture * texture)
 121 {
 122         int i;
 123         int count = 0;
 124         unsigned long colors[8];
 125
 126         /*
 127          * some stupid servers don't like white or black being freed...
 128          */
 129 #define CANFREE(c) (c!=scr->black_pixel && c!=scr->white_pixel && c!=0)
 130         switch (texture->any.type) {
 131         case WTEX_SOLID:
 132                 XFreeGC(dpy, texture->solid.light_gc);
 133                 XFreeGC(dpy, texture->solid.dark_gc);
 134                 XFreeGC(dpy, texture->solid.dim_gc);
 135                 if (CANFREE(texture->solid.light.pixel))
 136                         colors[count++] = texture->solid.light.pixel;
 137                 if (CANFREE(texture->solid.dim.pixel))
 138                         colors[count++] = texture->solid.dim.pixel;
 139                 if (CANFREE(texture->solid.dark.pixel))
 140                         colors[count++] = texture->solid.dark.pixel;
 141                 break;
 142
 143         case WTEX_PIXMAP:
 144                 RReleaseImage(texture->pixmap.pixmap);
 145                 break;
 146
 147         case WTEX_MHGRADIENT:
 148         case WTEX_MVGRADIENT:
 149         case WTEX_MDGRADIENT:
 150                 for (i = 0; texture->mgradient.colors[i] != NULL; i++) {
 151                         wfree(texture->mgradient.colors[i]);
 152                 }
 153                 wfree(texture->mgradient.colors);
 154                 break;
 155
 156         case WTEX_THGRADIENT:
 157         case WTEX_TVGRADIENT:
 158         case WTEX_TDGRADIENT:
 159                 RReleaseImage(texture->tgradient.pixmap);
 160                 break;
 161         }
 162
 163         if (CANFREE(texture->any.color.pixel))
 164                 colors[count++] = texture->any.color.pixel;
 165         if (count > 0) {
 166                 XErrorHandler oldhandler;
 167
 168                 /* ignore error from buggy servers that don't know how
 169                  * to do reference counting for colors. */
 170                 XSync(dpy, 0);
 171                 oldhandler = XSetErrorHandler(dummyErrorHandler);
 172                 XFreeColors(dpy, scr->w_colormap, colors, count, 0);
 173                 XSync(dpy, 0);
 174                 XSetErrorHandler(oldhandler);
 175         }
 176         XFreeGC(dpy, texture->any.gc);
 177         wfree(texture);
 178 #undef CANFREE
 179 }
 180
 181 WTexGradient *wTextureMakeGradient(WScreen *scr, int style, const RColor *from, const RColor *to)
 182 {
 183         WTexGradient *texture;
 184         XGCValues gcv;
 185
 186         texture = wmalloc(sizeof(WTexture));
 187         texture->type = style;
 188         texture->subtype = 0;
 189
 190         texture->color1 = *from;
 191         texture->color2 = *to;
 192
 193         texture->normal.red = (from->red + to->red) << 7;
 194         texture->normal.green = (from->green + to->green) << 7;
 195         texture->normal.blue = (from->blue + to->blue) << 7;
 196
 197         XAllocColor(dpy, scr->w_colormap, &texture->normal);
 198         gcv.background = gcv.foreground = texture->normal.pixel;
 199         gcv.graphics_exposures = False;
 200         texture->normal_gc = XCreateGC(dpy, scr->w_win, GCForeground | GCBackground | GCGraphicsExposures, &gcv);
 201
 202         return texture;
 203 }
 204
 205 WTexIGradient *wTextureMakeIGradient(WScreen *scr, int thickness1, const RColor colors1[2],
 206                                      int thickness2, const RColor colors2[2])
 207 {
 208         WTexIGradient *texture;
 209         XGCValues gcv;
 210         int i;
 211
 212         texture = wmalloc(sizeof(WTexture));
 213         texture->type = WTEX_IGRADIENT;
 214         for (i = 0; i < 2; i++) {
 215                 texture->colors1[i] = colors1[i];
 216                 texture->colors2[i] = colors2[i];
 217         }
 218         texture->thickness1 = thickness1;
 219         texture->thickness2 = thickness2;
 220         if (thickness1 >= thickness2) {
 221                 texture->normal.red = (colors1[0].red + colors1[1].red) << 7;
 222                 texture->normal.green = (colors1[0].green + colors1[1].green) << 7;
 223                 texture->normal.blue = (colors1[0].blue + colors1[1].blue) << 7;
 224         } else {
 225                 texture->normal.red = (colors2[0].red + colors2[1].red) << 7;
 226                 texture->normal.green = (colors2[0].green + colors2[1].green) << 7;
 227                 texture->normal.blue = (colors2[0].blue + colors2[1].blue) << 7;
 228         }
 229         XAllocColor(dpy, scr->w_colormap, &texture->normal);
 230         gcv.background = gcv.foreground = texture->normal.pixel;
 231         gcv.graphics_exposures = False;
 232         texture->normal_gc = XCreateGC(dpy, scr->w_win, GCForeground | GCBackground | GCGraphicsExposures, &gcv);
 233
 234         return texture;
 235 }
 236
 237 WTexMGradient *wTextureMakeMGradient(WScreen * scr, int style, RColor ** colors)
 238 {
 239         WTexMGradient *texture;
 240         XGCValues gcv;
 241         int i;
 242
 243         texture = wmalloc(sizeof(WTexture));
 244         texture->type = style;
 245         texture->subtype = 0;
 246
 247         i = 0;
 248         while (colors[i] != NULL)
 249                 i++;
 250         i--;
 251         texture->normal.red = (colors[0]->red << 8);
 252         texture->normal.green = (colors[0]->green << 8);
 253         texture->normal.blue = (colors[0]->blue << 8);
 254
 255         texture->colors = colors;
 256
 257         XAllocColor(dpy, scr->w_colormap, &texture->normal);
 258         gcv.background = gcv.foreground = texture->normal.pixel;
 259         gcv.graphics_exposures = False;
 260         texture->normal_gc = XCreateGC(dpy, scr->w_win, GCForeground | GCBackground | GCGraphicsExposures, &gcv);
 261
 262         return texture;
 263 }
 264
 265 WTexPixmap *wTextureMakePixmap(WScreen *scr, int style, const char *pixmap_file, XColor *color)
 266 {
 267         WTexPixmap *texture;
 268         XGCValues gcv;
 269         RImage *image;
 270
 271         image = get_texture_image(scr, pixmap_file);
 272         if (!image)
 273                 return NULL;
 274
 275         texture = wmalloc(sizeof(WTexture));
 276         texture->type = WTEX_PIXMAP;
 277         texture->subtype = style;
 278
 279         texture->normal = *color;
 280
 281         XAllocColor(dpy, scr->w_colormap, &texture->normal);
 282         gcv.background = gcv.foreground = texture->normal.pixel;
 283         gcv.graphics_exposures = False;
 284         texture->normal_gc = XCreateGC(dpy, scr->w_win, GCForeground | GCBackground | GCGraphicsExposures, &gcv);
 285
 286         texture->pixmap = image;
 287
 288         return texture;
 289 }
 290
 291 WTexTGradient *wTextureMakeTGradient(WScreen *scr, int style, const RColor *from, const RColor *to,
 292                                      const char *pixmap_file, int opacity)
 293 {
 294         WTexTGradient *texture;
 295         XGCValues gcv;
 296         RImage *image;
 297
 298         image = get_texture_image(scr, pixmap_file);
 299         if (!image)
 300                 return NULL;
 301
 302         texture = wmalloc(sizeof(WTexture));
 303         texture->type = style;
 304
 305         texture->opacity = opacity;
 306
 307         texture->color1 = *from;
 308         texture->color2 = *to;
 309
 310         texture->normal.red = (from->red + to->red) << 7;
 311         texture->normal.green = (from->green + to->green) << 7;
 312         texture->normal.blue = (from->blue + to->blue) << 7;
 313
 314         XAllocColor(dpy, scr->w_colormap, &texture->normal);
 315         gcv.background = gcv.foreground = texture->normal.pixel;
 316         gcv.graphics_exposures = False;
 317         texture->normal_gc = XCreateGC(dpy, scr->w_win, GCForeground | GCBackground | GCGraphicsExposures, &gcv);
 318
 319         texture->pixmap = image;
 320
 321         return texture;
 322 }
 323
 324 static RImage * get_texture_image(WScreen *scr, const char *pixmap_file)
 325 {
 326         char *file;
 327         RImage *image;
 328
 329         file = FindImage(wPreferences.pixmap_path, pixmap_file);
 330         if (!file) {
 331                 wwarning(_("image file \"%s\" used as texture could not be found."), pixmap_file);
 332                 return NULL;
 333         }
 334         image = RLoadImage(scr->rcontext, file, 0);
 335         if (!image) {
 336                 wwarning(_("could not load texture pixmap \"%s\":%s"), file, RMessageForError(RErrorCode));
 337                 wfree(file);
 338                 return NULL;
 339         }
 340         wfree(file);
 341
 342         return image;
 343 }
 344
 345 RImage *wTextureRenderImage(WTexture * texture, int width, int height, int relief)
 346 {
 347         RImage *image = NULL;
 348         RColor color1;
 349         int d;
 350         int subtype;
 351
 352         switch (texture->any.type) {
 353         case WTEX_SOLID:
 354                 image = RCreateImage(width, height, False);
 355
 356                 color1.red = texture->solid.normal.red >> 8;
 357                 color1.green = texture->solid.normal.green >> 8;
 358                 color1.blue = texture->solid.normal.blue >> 8;
 359                 color1.alpha = 255;
 360
 361                 RClearImage(image, &color1);
 362                 break;
 363
 364         case WTEX_PIXMAP:
 365                 if (texture->pixmap.subtype == WTP_TILE) {
 366                         image = RMakeTiledImage(texture->pixmap.pixmap, width, height);
 367                 } else if (texture->pixmap.subtype == WTP_CENTER) {
 368                         color1.red = texture->pixmap.normal.red >> 8;
 369                         color1.green = texture->pixmap.normal.green >> 8;
 370                         color1.blue = texture->pixmap.normal.blue >> 8;
 371                         color1.alpha = 255;
 372                         image = RMakeCenteredImage(texture->pixmap.pixmap, width, height, &color1);
 373                 } else {
 374                         image = RScaleImage(texture->pixmap.pixmap, width, height);
 375                 }
 376                 break;
 377
 378         case WTEX_IGRADIENT:
 379                 image = RRenderInterwovenGradient(width, height,
 380                                                   texture->igradient.colors1,
 381                                                   texture->igradient.thickness1,
 382                                                   texture->igradient.colors2, texture->igradient.thickness2);
 383                 break;
 384
 385         case WTEX_HGRADIENT:
 386                 subtype = RGRD_HORIZONTAL;
 387                 goto render_gradient;
 388
 389         case WTEX_VGRADIENT:
 390                 subtype = RGRD_VERTICAL;
 391                 goto render_gradient;
 392
 393         case WTEX_DGRADIENT:
 394                 subtype = RGRD_DIAGONAL;
 395  render_gradient:
 396
 397                 image = RRenderGradient(width, height, &texture->gradient.color1,
 398                                         &texture->gradient.color2, subtype);
 399                 break;
 400
 401         case WTEX_MHGRADIENT:
 402                 subtype = RGRD_HORIZONTAL;
 403                 goto render_mgradient;
 404
 405         case WTEX_MVGRADIENT:
 406                 subtype = RGRD_VERTICAL;
 407                 goto render_mgradient;
 408
 409         case WTEX_MDGRADIENT:
 410                 subtype = RGRD_DIAGONAL;
 411  render_mgradient:
 412                 image = RRenderMultiGradient(width, height, &(texture->mgradient.colors[1]), subtype);
 413                 break;
 414
 415         case WTEX_THGRADIENT:
 416                 subtype = RGRD_HORIZONTAL;
 417                 goto render_tgradient;
 418
 419         case WTEX_TVGRADIENT:
 420                 subtype = RGRD_VERTICAL;
 421                 goto render_tgradient;
 422
 423         case WTEX_TDGRADIENT:
 424                 subtype = RGRD_DIAGONAL;
 425  render_tgradient:
 426                 {
 427                         RImage *grad;
 428
 429                         image = RMakeTiledImage(texture->tgradient.pixmap, width, height);
 430                         if (!image)
 431                                 break;
 432
 433                         grad = RRenderGradient(width, height, &texture->tgradient.color1,
 434                                                &texture->tgradient.color2, subtype);
 435                         if (!grad) {
 436                                 RReleaseImage(image);
 437                                 image = NULL;
 438                                 break;
 439                         }
 440
 441                         RCombineImagesWithOpaqueness(image, grad, texture->tgradient.opacity);
 442                         RReleaseImage(grad);
 443                 }
 444                 break;
 445         default:
 446                 puts("ERROR in wTextureRenderImage()");
 447                 image = NULL;
 448                 break;
 449         }
 450
 451         if (!image) {
 452                 RColor gray;
 453
 454                 wwarning(_("could not render texture: %s"), RMessageForError(RErrorCode));
 455
 456                 image = RCreateImage(width, height, False);
 457                 if (image == NULL) {
 458                         wwarning(_("could not allocate image buffer"));
 459                         return NULL;
 460                 }
 461
 462                 gray.red = 190;
 463                 gray.green = 190;
 464                 gray.blue = 190;
 465                 gray.alpha = 255;
 466                 RClearImage(image, &gray);
 467         }
 468
 469         /* render bevel */
 470
 471         switch (relief) {
 472         case WREL_ICON:
 473                 d = RBEV_RAISED3;
 474                 break;
 475
 476         case WREL_RAISED:
 477                 d = RBEV_RAISED2;
 478                 break;
 479
 480         case WREL_SUNKEN:
 481                 d = RBEV_SUNKEN;
 482                 break;
 483
 484         case WREL_FLAT:
 485                 d = 0;
 486                 break;
 487
 488         case WREL_MENUENTRY:
 489                 d = -WREL_MENUENTRY;
 490                 break;
 491
 492         default:
 493                 d = 0;
 494         }
 495
 496         if (d > 0) {
 497                 RBevelImage(image, d);
 498         } else if (d < 0) {
 499                 bevelImage(image, -d);
 500         }
 501
 502         return image;
 503 }
 504
 505 static void bevelImage(RImage * image, int relief)
 506 {
 507         int width = image->width;
 508         int height = image->height;
 509         RColor color;
 510
 511         switch (relief) {
 512         case WREL_MENUENTRY:
 513                 color.red = color.green = color.blue = 80;
 514                 color.alpha = 0;
 515                  /**/ ROperateLine(image, RAddOperation, 1, 0, width - 2, 0, &color);
 516                  /**/ ROperateLine(image, RAddOperation, 0, 0, 0, height - 1, &color);
 517
 518                 color.red = color.green = color.blue = 40;
 519                 color.alpha = 0;
 520                 ROperateLine(image, RSubtractOperation, width - 1, 0, width - 1, height - 1, &color);
 521
 522                  /**/ ROperateLine(image, RSubtractOperation, 1, height - 2, width - 2, height - 2, &color);
 523
 524                 color.red = color.green = color.blue = 0;
 525                 color.alpha = 255;
 526                 RDrawLine(image, 0, height - 1, width - 1, height - 1, &color);
 527                  /**/ break;
 528
 529         }
 530 }
 531
 532 void wDrawBevel(Drawable d, unsigned width, unsigned height, WTexSolid * texture, int relief)
 533 {
 534         GC light, dim, dark;
 535         XSegment segs[4];
 536
 537         if (relief == WREL_FLAT)
 538                 return;
 539
 540         light = texture->light_gc;
 541         dim = texture->dim_gc;
 542         dark = texture->dark_gc;
 543         switch (relief) {
 544         case WREL_MENUENTRY:
 545         case WREL_RAISED:
 546         case WREL_ICON:
 547                 segs[0].x1 = 1;
 548                 segs[0].x2 = width - 2;
 549                 segs[0].y2 = segs[0].y1 = height - 2;
 550                 segs[1].x1 = width - 2;
 551                 segs[1].y1 = 1;
 552                 segs[1].x2 = width - 2;
 553                 segs[1].y2 = height - 2;
 554                 if (wPreferences.new_style == TS_NEXT) {
 555                         XDrawSegments(dpy, d, dark, segs, 2);
 556                 } else {
 557                         XDrawSegments(dpy, d, dim, segs, 2);
 558                 }
 559                 segs[0].x1 = 0;
 560                 segs[0].x2 = width - 1;
 561                 segs[0].y2 = segs[0].y1 = height - 1;
 562                 segs[1].x1 = segs[1].x2 = width - 1;
 563                 segs[1].y1 = 0;
 564                 segs[1].y2 = height - 1;
 565                 if (wPreferences.new_style == TS_NEXT) {
 566                         XDrawSegments(dpy, d, light, segs, 2);
 567                 } else {
 568                         XDrawSegments(dpy, d, dark, segs, 2);
 569                 }
 570                 segs[0].x1 = segs[0].y1 = segs[0].y2 = 0;
 571                 segs[0].x2 = width - 2;
 572                 segs[1].x1 = segs[1].y1 = 0;
 573                 segs[1].x2 = 0;
 574                 segs[1].y2 = height - 2;
 575                 if (wPreferences.new_style == TS_NEXT) {
 576                         XDrawSegments(dpy, d, dark, segs, 2);
 577                 } else {
 578                         XDrawSegments(dpy, d, light, segs, 2);
 579                 }
 580                 if (relief == WREL_ICON) {
 581                         segs[0].x1 = segs[0].y1 = segs[0].y2 = 1;
 582                         segs[0].x2 = width - 2;
 583                         segs[1].x1 = segs[1].y1 = 1;
 584                         segs[1].x2 = 1;
 585                         segs[1].y2 = height - 2;
 586                         XDrawSegments(dpy, d, light, segs, 2);
 587                 }
 588                 break;
 589         }
 590 }