de/draw.c

   1 /*
   2  * ion/de/draw.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2007.
   5  *
   6  * Ion is free software; you can redistribute it and/or modify it under
   7  * the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <string.h>
  13 #include <limits.h>
  14
  15 #include <ioncore/global.h>
  16 #include <ioncore/common.h>
  17 #include <ioncore/gr.h>
  18 #include "brush.h"
  19 #include "font.h"
  20 #include "private.h"
  21
  22 #include <X11/extensions/shape.h>
  23
  24
  25 /*{{{ Colour group lookup */
  26
  27
  28 static DEColourGroup *destyle_get_colour_group2(DEStyle *style,
  29                                                 const GrStyleSpec *a1,
  30                                                 const GrStyleSpec *a2)
  31 {
  32     int i, score, maxscore=0;
  33     DEColourGroup *maxg=&(style->cgrp);
  34
  35     while(style!=NULL){
  36         for(i=0; i<style->n_extra_cgrps; i++){
  37             score=gr_stylespec_score2(&style->extra_cgrps[i].spec, a1, a2);
  38
  39             if(score>maxscore){
  40                 maxg=&(style->extra_cgrps[i]);
  41                 maxscore=score;
  42             }
  43         }
  44         style=style->based_on;
  45     }
  46
  47     return maxg;
  48 }
  49
  50
  51 DEColourGroup *debrush_get_colour_group2(DEBrush *brush,
  52                                          const GrStyleSpec *a1,
  53                                          const GrStyleSpec *a2)
  54 {
  55     return destyle_get_colour_group2(brush->d, a1, a2);
  56 }
  57
  58
  59 DEColourGroup *debrush_get_colour_group(DEBrush *brush, const GrStyleSpec *attr)
  60 {
  61     return destyle_get_colour_group2(brush->d, attr, NULL);
  62 }
  63
  64
  65 DEColourGroup *debrush_get_current_colour_group(DEBrush *brush)
  66 {
  67     return debrush_get_colour_group(brush, debrush_get_current_attr(brush));
  68 }
  69
  70
  71 /*}}}*/
  72
  73
  74 /*{{{ Borders */
  75
  76
  77 /* Draw a border at x, y with outer width w x h. Top and left 'tl' pixels
  78  * wide with color 'tlc' and bottom and right 'br' pixels with colors 'brc'.
  79  */
  80 static void do_draw_border(Window win, GC gc, int x, int y, int w, int h,
  81                            uint tl, uint br, DEColour tlc, DEColour brc)
  82 {
  83     XPoint points[3];
  84     uint i=0, a=0, b=0;
  85
  86     w--;
  87     h--;
  88
  89     XSetForeground(ioncore_g.dpy, gc, tlc);
  90
  91
  92     a=(br!=0);
  93     b=0;
  94
  95     for(i=0; i<tl; i++){
  96         points[0].x=x+i;        points[0].y=y+h+1-b;
  97         points[1].x=x+i;        points[1].y=y+i;
  98         points[2].x=x+w+1-a;    points[2].y=y+i;
  99
 100         if(a<br)
 101             a++;
 102         if(b<br)
 103             b++;
 104
 105         XDrawLines(ioncore_g.dpy, win, gc, points, 3, CoordModeOrigin);
 106     }
 107
 108
 109     XSetForeground(ioncore_g.dpy, gc, brc);
 110
 111     a=(tl!=0);
 112     b=0;
 113
 114     for(i=0; i<br; i++){
 115         points[0].x=x+w-i;        points[0].y=y+b;
 116         points[1].x=x+w-i;        points[1].y=y+h-i;
 117         points[2].x=x+a;        points[2].y=y+h-i;
 118
 119         if(a<tl)
 120             a++;
 121         if(b<tl)
 122             b++;
 123
 124         XDrawLines(ioncore_g.dpy, win, gc, points, 3, CoordModeOrigin);
 125     }
 126 }
 127
 128
 129 static void draw_border(Window win, GC gc, WRectangle *geom,
 130                         uint tl, uint br, DEColour tlc, DEColour brc)
 131 {
 132     do_draw_border(win, gc, geom->x, geom->y, geom->w, geom->h,
 133                    tl, br, tlc, brc);
 134     geom->x+=tl;
 135     geom->y+=tl;
 136     geom->w-=tl+br;
 137     geom->h-=tl+br;
 138 }
 139
 140
 141 void debrush_do_draw_border(DEBrush *brush, WRectangle geom,
 142                             DEColourGroup *cg)
 143 {
 144     DEBorder *bd=&(brush->d->border);
 145     GC gc=brush->d->normal_gc;
 146     Window win=brush->win;
 147
 148     switch(bd->style){
 149     case DEBORDER_RIDGE:
 150         draw_border(win, gc, &geom, bd->hl, bd->sh, cg->hl, cg->sh);
 151     case DEBORDER_INLAID:
 152         draw_border(win, gc, &geom, bd->pad, bd->pad, cg->pad, cg->pad);
 153         draw_border(win, gc, &geom, bd->sh, bd->hl, cg->sh, cg->hl);
 154         break;
 155     case DEBORDER_GROOVE:
 156         draw_border(win, gc, &geom, bd->sh, bd->hl, cg->sh, cg->hl);
 157         draw_border(win, gc, &geom, bd->pad, bd->pad, cg->pad, cg->pad);
 158         draw_border(win, gc, &geom, bd->hl, bd->sh, cg->hl, cg->sh);
 159         break;
 160     case DEBORDER_ELEVATED:
 161     default:
 162         draw_border(win, gc, &geom, bd->hl, bd->sh, cg->hl, cg->sh);
 163         draw_border(win, gc, &geom, bd->pad, bd->pad, cg->pad, cg->pad);
 164         break;
 165     }
 166 }
 167
 168
 169
 170
 171 void debrush_draw_border(DEBrush *brush,
 172                          const WRectangle *geom)
 173 {
 174     DEColourGroup *cg=debrush_get_current_colour_group(brush);
 175     if(cg!=NULL)
 176         debrush_do_draw_border(brush, *geom, cg);
 177 }
 178
 179
 180 static void draw_borderline(Window win, GC gc, WRectangle *geom,
 181                             uint tl, uint br, DEColour tlc, DEColour brc,
 182                             GrBorderLine line)
 183 {
 184     if(line==GR_BORDERLINE_LEFT && geom->h>0){
 185         XSetForeground(ioncore_g.dpy, gc, tlc);
 186         XDrawRectangle(ioncore_g.dpy, win, gc, geom->x, geom->y, tl, geom->h);
 187         geom->x+=tl;
 188     }else if(line==GR_BORDERLINE_TOP && geom->w>0){
 189         XSetForeground(ioncore_g.dpy, gc, tlc);
 190         XDrawRectangle(ioncore_g.dpy, win, gc, geom->x, geom->y, geom->w, tl);
 191         geom->y+=tl;
 192     }else if(line==GR_BORDERLINE_RIGHT && geom->h>0){
 193         XSetForeground(ioncore_g.dpy, gc, brc);
 194         XDrawRectangle(ioncore_g.dpy, win, gc, geom->x+geom->w-1-br, geom->y, br, geom->h);
 195         geom->w-=br;
 196     }else if(line==GR_BORDERLINE_BOTTOM && geom->w>0){
 197         XSetForeground(ioncore_g.dpy, gc, brc);
 198         XDrawRectangle(ioncore_g.dpy, win, gc, geom->x, geom->y+geom->h-1-br, geom->w, br);
 199         geom->h-=br;
 200     }
 201 }
 202
 203
 204 void debrush_do_draw_borderline(DEBrush *brush, WRectangle geom,
 205                                 DEColourGroup *cg, GrBorderLine line)
 206 {
 207     DEBorder *bd=&(brush->d->border);
 208     GC gc=brush->d->normal_gc;
 209     Window win=brush->win;
 210
 211     switch(bd->style){
 212     case DEBORDER_RIDGE:
 213         draw_borderline(win, gc, &geom, bd->hl, bd->sh, cg->hl, cg->sh, line);
 214     case DEBORDER_INLAID:
 215         draw_borderline(win, gc, &geom, bd->pad, bd->pad, cg->pad, cg->pad, line);
 216         draw_borderline(win, gc, &geom, bd->sh, bd->hl, cg->sh, cg->hl, line);
 217         break;
 218     case DEBORDER_GROOVE:
 219         draw_borderline(win, gc, &geom, bd->sh, bd->hl, cg->sh, cg->hl, line);
 220         draw_borderline(win, gc, &geom, bd->pad, bd->pad, cg->pad, cg->pad, line);
 221         draw_borderline(win, gc, &geom, bd->hl, bd->sh, cg->hl, cg->sh, line);
 222         break;
 223     case DEBORDER_ELEVATED:
 224     default:
 225         draw_borderline(win, gc, &geom, bd->hl, bd->sh, cg->hl, cg->sh, line);
 226         draw_borderline(win, gc, &geom, bd->pad, bd->pad, cg->pad, cg->pad, line);
 227         break;
 228     }
 229 }
 230
 231
 232 void debrush_draw_borderline(DEBrush *brush, const WRectangle *geom,
 233                              GrBorderLine line)
 234 {
 235     DEColourGroup *cg=debrush_get_current_colour_group(brush);
 236     if(cg!=NULL)
 237         debrush_do_draw_borderline(brush, *geom, cg, line);
 238 }
 239
 240
 241 /*}}}*/
 242
 243
 244 /*{{{ Boxes */
 245
 246
 247 static void copy_masked(DEBrush *brush, Drawable src, Drawable dst,
 248                         int src_x, int src_y, int w, int h,
 249                         int dst_x, int dst_y)
 250 {
 251
 252     GC copy_gc=brush->d->copy_gc;
 253
 254     XSetClipMask(ioncore_g.dpy, copy_gc, src);
 255     XSetClipOrigin(ioncore_g.dpy, copy_gc, dst_x, dst_y);
 256     XCopyPlane(ioncore_g.dpy, src, dst, copy_gc, src_x, src_y, w, h,
 257                dst_x, dst_y, 1);
 258 }
 259
 260
 261 static GrStyleSpec dragged_spec=GR_STYLESPEC_INIT;
 262 static GrStyleSpec tagged_spec=GR_STYLESPEC_INIT;
 263 static GrStyleSpec submenu_spec=GR_STYLESPEC_INIT;
 264
 265
 266 void debrush_tab_extras(DEBrush *brush, const WRectangle *g,
 267                         DEColourGroup *cg, GrBorderWidths *bdw,
 268                         GrFontExtents *fnte,
 269                         const GrStyleSpec *a1,
 270                         const GrStyleSpec *a2,
 271                         bool pre)
 272 {
 273     DEStyle *d=brush->d;
 274     GC tmp;
 275     /* Not thread-safe, but neither is the rest of the drawing code
 276      * with shared GC:s.
 277      */
 278     static bool swapped=FALSE;
 279
 280     ENSURE_INITSPEC(dragged_spec, "dragged");
 281     ENSURE_INITSPEC(tagged_spec, "tagged");
 282
 283     if(pre){
 284         if(!MATCHES2(dragged_spec, a1, a2))
 285             return;
 286
 287         tmp=d->normal_gc;
 288         d->normal_gc=d->stipple_gc;
 289         d->stipple_gc=tmp;
 290         swapped=TRUE;
 291         XClearArea(ioncore_g.dpy, brush->win, g->x, g->y, g->w, g->h, False);
 292         return;
 293     }
 294
 295     if(MATCHES2(tagged_spec, a1, a2)){
 296         XSetForeground(ioncore_g.dpy, d->copy_gc, cg->fg);
 297
 298         copy_masked(brush, d->tag_pixmap, brush->win, 0, 0,
 299                     d->tag_pixmap_w, d->tag_pixmap_h,
 300                     g->x+g->w-bdw->right-d->tag_pixmap_w,
 301                     g->y+bdw->top);
 302     }
 303
 304     if(swapped){
 305         tmp=d->normal_gc;
 306         d->normal_gc=d->stipple_gc;
 307         d->stipple_gc=tmp;
 308         swapped=FALSE;
 309     }
 310     /*if(MATCHES2("*-*-*-dragged", a1, a2)){
 311         XFillRectangle(ioncore_g.dpy, win, d->stipple_gc,
 312                        g->x, g->y, g->w, g->h);
 313     }*/
 314 }
 315
 316
 317 void debrush_menuentry_extras(DEBrush *brush,
 318                               const WRectangle *g,
 319                               DEColourGroup *cg,
 320                               GrBorderWidths *bdw,
 321                               GrFontExtents *fnte,
 322                               const GrStyleSpec *a1,
 323                               const GrStyleSpec *a2,
 324                               bool pre)
 325 {
 326     int tx, ty;
 327
 328     if(pre)
 329         return;
 330
 331     ENSURE_INITSPEC(submenu_spec, "submenu");
 332
 333     if(!MATCHES2(submenu_spec, a1, a2))
 334         return;
 335
 336     ty=(g->y+bdw->top+fnte->baseline
 337         +(g->h-bdw->top-bdw->bottom-fnte->max_height)/2);
 338     tx=g->x+g->w-bdw->right;
 339
 340     debrush_do_draw_string(brush, tx, ty, DE_SUB_IND, DE_SUB_IND_LEN,
 341                            FALSE, cg);
 342 }
 343
 344
 345 void debrush_do_draw_box(DEBrush *brush, const WRectangle *geom,
 346                          DEColourGroup *cg, bool needfill)
 347 {
 348     GC gc=brush->d->normal_gc;
 349
 350     if(TRUE/*needfill*/){
 351         XSetForeground(ioncore_g.dpy, gc, cg->bg);
 352         XFillRectangle(ioncore_g.dpy, brush->win, gc, geom->x, geom->y,
 353                        geom->w, geom->h);
 354     }
 355
 356     debrush_do_draw_border(brush, *geom, cg);
 357 }
 358
 359
 360 static void debrush_do_draw_textbox(DEBrush *brush,
 361                                     const WRectangle *geom,
 362                                     const char *text,
 363                                     DEColourGroup *cg,
 364                                     bool needfill,
 365                                     const GrStyleSpec *a1,
 366                                     const GrStyleSpec *a2)
 367 {
 368     uint len;
 369     GrBorderWidths bdw;
 370     GrFontExtents fnte;
 371     uint tx, ty, tw;
 372
 373     grbrush_get_border_widths(&(brush->grbrush), &bdw);
 374     grbrush_get_font_extents(&(brush->grbrush), &fnte);
 375
 376     if(brush->extras_fn!=NULL)
 377         brush->extras_fn(brush, geom, cg, &bdw, &fnte, a1, a2, TRUE);
 378
 379     debrush_do_draw_box(brush, geom, cg, needfill);
 380
 381     do{ /*...while(0)*/
 382         if(text==NULL)
 383             break;
 384
 385         len=strlen(text);
 386
 387         if(len==0)
 388             break;
 389
 390         if(brush->d->textalign!=DEALIGN_LEFT){
 391             tw=grbrush_get_text_width((GrBrush*)brush, text, len);
 392
 393             if(brush->d->textalign==DEALIGN_CENTER)
 394                 tx=geom->x+bdw.left+(geom->w-bdw.left-bdw.right-tw)/2;
 395             else
 396                 tx=geom->x+geom->w-bdw.right-tw;
 397         }else{
 398             tx=geom->x+bdw.left;
 399         }
 400
 401         ty=(geom->y+bdw.top+fnte.baseline
 402             +(geom->h-bdw.top-bdw.bottom-fnte.max_height)/2);
 403
 404         debrush_do_draw_string(brush, tx, ty, text, len, FALSE, cg);
 405     }while(0);
 406
 407     if(brush->extras_fn!=NULL)
 408         brush->extras_fn(brush, geom, cg, &bdw, &fnte, a1, a2, FALSE);
 409 }
 410
 411
 412 void debrush_draw_textbox(DEBrush *brush, const WRectangle *geom,
 413                           const char *text, bool needfill)
 414 {
 415     GrStyleSpec *attr=debrush_get_current_attr(brush);
 416     DEColourGroup *cg=debrush_get_colour_group(brush, attr);
 417
 418     if(cg!=NULL){
 419         debrush_do_draw_textbox(brush, geom, text, cg, needfill,
 420                                 attr, NULL);
 421     }
 422 }
 423
 424
 425 void debrush_draw_textboxes(DEBrush *brush, const WRectangle *geom,
 426                             int n, const GrTextElem *elem,
 427                             bool needfill)
 428 {
 429     GrStyleSpec *common_attrib;
 430     WRectangle g=*geom;
 431     DEColourGroup *cg;
 432     GrBorderWidths bdw;
 433     int i;
 434
 435     common_attrib=debrush_get_current_attr(brush);
 436
 437     grbrush_get_border_widths(&(brush->grbrush), &bdw);
 438
 439     for(i=0; ; i++){
 440         g.w=bdw.left+elem[i].iw+bdw.right;
 441         cg=debrush_get_colour_group2(brush, common_attrib, &elem[i].attr);
 442
 443         if(cg!=NULL){
 444             debrush_do_draw_textbox(brush, &g, elem[i].text, cg, needfill,
 445                                     common_attrib, &elem[i].attr);
 446         }
 447
 448         if(i==n-1)
 449             break;
 450
 451         g.x+=g.w;
 452         if(bdw.spacing>0 && needfill){
 453             XClearArea(ioncore_g.dpy, brush->win, g.x, g.y,
 454                        brush->d->spacing, g.h, False);
 455         }
 456         g.x+=bdw.spacing;
 457     }
 458 }
 459
 460
 461 /*}}}*/
 462
 463
 464 /*{{{ Misc. */
 465
 466 #define MAXSHAPE 16
 467
 468 void debrush_set_window_shape(DEBrush *brush, bool rough,
 469                               int n, const WRectangle *rects)
 470 {
 471     XRectangle r[MAXSHAPE];
 472     int i;
 473
 474     if(n>MAXSHAPE)
 475         n=MAXSHAPE;
 476
 477     if(n==0){
 478         /* n==0 should clear the shape. As there's absolutely no
 479          * documentation for XShape (as is typical of all sucky X
 480          * extensions), I don't know how the shape should properly
 481          * be cleared. Thus we just use a huge rectangle.
 482          */
 483         n=1;
 484         r[0].x=0;
 485         r[0].y=0;
 486         r[0].width=USHRT_MAX;
 487         r[0].height=USHRT_MAX;
 488     }else{
 489         for(i=0; i<n; i++){
 490             r[i].x=rects[i].x;
 491             r[i].y=rects[i].y;
 492             r[i].width=rects[i].w;
 493             r[i].height=rects[i].h;
 494         }
 495     }
 496
 497     XShapeCombineRectangles(ioncore_g.dpy, brush->win,
 498                             ShapeBounding, 0, 0, r, n,
 499                             ShapeSet, Unsorted);
 500 }
 501
 502
 503 void debrush_enable_transparency(DEBrush *brush, GrTransparency mode)
 504 {
 505     XSetWindowAttributes attr;
 506     ulong attrflags=0;
 507
 508     if(mode==GR_TRANSPARENCY_DEFAULT)
 509         mode=brush->d->transparency_mode;
 510
 511     if(mode==GR_TRANSPARENCY_YES){
 512         attrflags=CWBackPixmap;
 513         attr.background_pixmap=ParentRelative;
 514     }else{
 515         attrflags=CWBackPixel;
 516         attr.background_pixel=brush->d->cgrp.bg;
 517     }
 518
 519     XChangeWindowAttributes(ioncore_g.dpy, brush->win, attrflags, &attr);
 520     XClearWindow(ioncore_g.dpy, brush->win);
 521 }
 522
 523
 524 void debrush_fill_area(DEBrush *brush, const WRectangle *geom)
 525 {
 526     DEColourGroup *cg=debrush_get_current_colour_group(brush);
 527     GC gc=brush->d->normal_gc;
 528
 529     if(cg==NULL)
 530         return;
 531
 532     XSetForeground(ioncore_g.dpy, gc, cg->bg);
 533     XFillRectangle(ioncore_g.dpy, brush->win, gc,
 534                    geom->x, geom->y, geom->w, geom->h);
 535 }
 536
 537
 538 void debrush_clear_area(DEBrush *brush, const WRectangle *geom)
 539 {
 540     XClearArea(ioncore_g.dpy, brush->win,
 541                geom->x, geom->y, geom->w, geom->h, False);
 542 }
 543
 544
 545 /*}}}*/
 546
 547
 548 /*{{{ Clipping rectangles */
 549
 550 /* Should actually set the clipping rectangle for all GC:s and use
 551  * window-specific GC:s to do this correctly...
 552  */
 553
 554 static void debrush_set_clipping_rectangle(DEBrush *brush,
 555                                            const WRectangle *geom)
 556 {
 557     XRectangle rect;
 558
 559     assert(!brush->clip_set);
 560
 561     rect.x=geom->x;
 562     rect.y=geom->y;
 563     rect.width=geom->w;
 564     rect.height=geom->h;
 565
 566     XSetClipRectangles(ioncore_g.dpy, brush->d->normal_gc,
 567                        0, 0, &rect, 1, Unsorted);
 568     brush->clip_set=TRUE;
 569 }
 570
 571
 572 static void debrush_clear_clipping_rectangle(DEBrush *brush)
 573 {
 574     if(brush->clip_set){
 575         XSetClipMask(ioncore_g.dpy, brush->d->normal_gc, None);
 576         brush->clip_set=FALSE;
 577     }
 578 }
 579
 580
 581 /*}}}*/
 582
 583
 584 /*{{{ debrush_begin/end */
 585
 586
 587 void debrush_begin(DEBrush *brush, const WRectangle *geom, int flags)
 588 {
 589
 590     if(flags&GRBRUSH_AMEND)
 591         flags|=GRBRUSH_NO_CLEAR_OK;
 592
 593     if(!(flags&GRBRUSH_KEEP_ATTR))
 594         debrush_init_attr(brush, NULL);
 595
 596     if(!(flags&GRBRUSH_NO_CLEAR_OK))
 597         debrush_clear_area(brush, geom);
 598
 599     if(flags&GRBRUSH_NEED_CLIP)
 600         debrush_set_clipping_rectangle(brush, geom);
 601 }
 602
 603
 604 void debrush_end(DEBrush *brush)
 605 {
 606     debrush_clear_clipping_rectangle(brush);
 607 }
 608
 609
 610 /*}}}*/
 611