gtk2_ardour/canvas-simplerect.c

   1 #include <stdio.h>
   2 #include <math.h>
   3 #include <libgnomecanvas/libgnomecanvas.h>
   4
   5 #include "canvas-simplerect.h"
   6 #include "rgb_macros.h"
   7 #include "gettext.h"
   8 #define _(Text)  dgettext (PACKAGE,Text)
   9
  10 enum {
  11         PROP_0,
  12         PROP_X1,
  13         PROP_Y1,
  14         PROP_X2,
  15         PROP_Y2,
  16         PROP_OUTLINE_PIXELS,
  17         PROP_OUTLINE_WHAT,
  18         PROP_FILL,
  19         PROP_FILL_COLOR_RGBA,
  20         PROP_OUTLINE_COLOR_RGBA,
  21         PROP_DRAW
  22
  23 };
  24
  25 static void   gnome_canvas_simplerect_class_init    (GnomeCanvasSimpleRectClass *class);
  26
  27 static void   gnome_canvas_simplerect_init          (GnomeCanvasSimpleRect      *simplerect);
  28
  29 static void   gnome_canvas_simplerect_destroy       (GtkObject                  *object);
  30
  31 static void   gnome_canvas_simplerect_set_property  (GObject        *object,
  32                                                      guint            prop_id,
  33                                                      const GValue   *value,
  34                                                      GParamSpec     *pspec);
  35
  36 static void   gnome_canvas_simplerect_get_property  (GObject        *object,
  37                                                      guint           prop_id,
  38                                                      GValue         *value,
  39                                                      GParamSpec     *pspec);
  40
  41 static void   gnome_canvas_simplerect_update        (GnomeCanvasItem *item,
  42                                                      double          *affine,
  43                                                      ArtSVP          *clip_path,
  44                                                      int              flags);
  45
  46 static void   gnome_canvas_simplerect_bounds        (GnomeCanvasItem *item,
  47                                                      double          *x1,
  48                                                      double          *y1,
  49                                                      double          *x2,
  50                                                      double          *y2);
  51
  52 static double gnome_canvas_simplerect_point         (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item);
  53
  54 static void   gnome_canvas_simplerect_render        (GnomeCanvasItem *item, GnomeCanvasBuf *buf);
  55
  56 static void   gnome_canvas_simplerect_draw          (GnomeCanvasItem *item, GdkDrawable *drawable, int x, int y, int w, int h);
  57
  58 static GnomeCanvasItemClass *parent_class;
  59
  60
  61 GType
  62 gnome_canvas_simplerect_get_type (void)
  63 {
  64         static GType simplerect_type;
  65
  66         if (!simplerect_type) {
  67                 static const GTypeInfo object_info = {
  68                         sizeof (GnomeCanvasSimpleRectClass),
  69                         (GBaseInitFunc) NULL,
  70                         (GBaseFinalizeFunc) NULL,
  71                         (GClassInitFunc) gnome_canvas_simplerect_class_init,
  72                         (GClassFinalizeFunc) NULL,
  73                         NULL,                   /* class_data */
  74                         sizeof (GnomeCanvasSimpleRect),
  75                         0,                      /* n_preallocs */
  76                         (GInstanceInitFunc) gnome_canvas_simplerect_init,
  77                         NULL                    /* value_table */
  78                 };
  79
  80                 simplerect_type = g_type_register_static (GNOME_TYPE_CANVAS_ITEM, "GnomeCanvasSimpleRect",
  81                                                           &object_info, 0);
  82         }
  83
  84         return simplerect_type;
  85 }
  86
  87 static void
  88 gnome_canvas_simplerect_class_init (GnomeCanvasSimpleRectClass *class)
  89 {
  90         GObjectClass *gobject_class;
  91         GtkObjectClass *object_class;
  92         GnomeCanvasItemClass *item_class;
  93
  94         gobject_class = (GObjectClass *) class;
  95         object_class = (GtkObjectClass *) class;
  96         item_class = (GnomeCanvasItemClass *) class;
  97
  98         parent_class = g_type_class_peek_parent (class);
  99
 100         gobject_class->set_property = gnome_canvas_simplerect_set_property;
 101         gobject_class->get_property = gnome_canvas_simplerect_get_property;
 102
 103         g_object_class_install_property (gobject_class,
 104                                          PROP_X1,
 105                                          g_param_spec_double ("x1",
 106                                                               _("x1"),
 107                                                               _("x coordinate of upper left corner of rect"),
 108                                                               -G_MAXDOUBLE,
 109                                                               G_MAXDOUBLE,
 110                                                               0.0,
 111                                                               G_PARAM_READWRITE));
 112
 113         g_object_class_install_property (gobject_class,
 114                                          PROP_Y1,
 115                                          g_param_spec_double ("y1",
 116                                                               _("y1"),
 117                                                               _("y coordinate of upper left corner of rect "),
 118                                                               -G_MAXDOUBLE,
 119                                                               G_MAXDOUBLE,
 120                                                               0.0,
 121                                                               G_PARAM_READWRITE));
 122
 123
 124         g_object_class_install_property (gobject_class,
 125                                          PROP_X2,
 126                                          g_param_spec_double ("x2",
 127                                                               _("x2"),
 128                                                               _("x coordinate of lower right corner of rect"),
 129                                                               -G_MAXDOUBLE,
 130                                                               G_MAXDOUBLE,
 131                                                               0.0,
 132                                                               G_PARAM_READWRITE));
 133
 134         g_object_class_install_property (gobject_class,
 135                                          PROP_Y2,
 136                                          g_param_spec_double ("y2",
 137                                                               _("y2"),
 138                                                               _("y coordinate of lower right corner of rect "),
 139                                                               -G_MAXDOUBLE,
 140                                                               G_MAXDOUBLE,
 141                                                               0.0,
 142                                                               G_PARAM_READWRITE));
 143
 144
 145         g_object_class_install_property (gobject_class,
 146                                          PROP_OUTLINE_PIXELS,
 147                                          g_param_spec_uint ("outline_pixels",
 148                                                               _("outline pixels"),
 149                                                               _("width in pixels of outline"),
 150                                                               0,
 151                                                               G_MAXUINT,
 152                                                               0,
 153                                                               G_PARAM_READWRITE));
 154
 155
 156         g_object_class_install_property (gobject_class,
 157                                          PROP_OUTLINE_WHAT,
 158                                          g_param_spec_uint ("outline_what",
 159                                                               _("outline what"),
 160                                                               _("which boundaries to outline (mask)"),
 161                                                               0,
 162                                                               G_MAXUINT,
 163                                                               0,
 164                                                               G_PARAM_READWRITE));
 165
 166
 167
 168         g_object_class_install_property (gobject_class,
 169                                          PROP_FILL,
 170                                          g_param_spec_boolean ("fill",
 171                                                                _("fill"),
 172                                                                _("fill rectangle"),
 173                                                                TRUE,
 174                                                                G_PARAM_READWRITE));
 175
 176         g_object_class_install_property (gobject_class,
 177                                          PROP_DRAW,
 178                                          g_param_spec_boolean ("draw",
 179                                                                _("draw"),
 180                                                                _("draw rectangle"),
 181                                                                TRUE,
 182                                                                G_PARAM_READWRITE));
 183
 184
 185         g_object_class_install_property (gobject_class,
 186                                          PROP_OUTLINE_COLOR_RGBA,
 187                                          g_param_spec_uint ("outline_color_rgba",
 188                                                             _("outline color rgba"),
 189                                                             _("color of outline"),
 190                                                             0,
 191                                                             G_MAXUINT,
 192                                                             0,
 193                                                             G_PARAM_READWRITE));
 194
 195
 196         g_object_class_install_property (gobject_class,
 197                                          PROP_FILL_COLOR_RGBA,
 198                                          g_param_spec_uint ("fill_color_rgba",
 199                                                             _("fill color rgba"),
 200                                                             _("color of fill"),
 201                                                             0,
 202                                                             G_MAXUINT,
 203                                                             0,
 204                                                             G_PARAM_READWRITE));
 205
 206         object_class->destroy = gnome_canvas_simplerect_destroy;
 207
 208         item_class->update = gnome_canvas_simplerect_update;
 209         item_class->draw = gnome_canvas_simplerect_draw;
 210         item_class->bounds = gnome_canvas_simplerect_bounds;
 211         item_class->point = gnome_canvas_simplerect_point;
 212         item_class->render = gnome_canvas_simplerect_render;
 213
 214 }
 215
 216 static void
 217 gnome_canvas_simplerect_init (GnomeCanvasSimpleRect *simplerect)
 218 {
 219         simplerect->x1 = 0.0;
 220         simplerect->y1 = 0.0;
 221         simplerect->x2 = 0.0;
 222         simplerect->y2 = 0.0;
 223         simplerect->fill = TRUE;
 224         simplerect->draw = TRUE;
 225         simplerect->full_draw_on_update = TRUE;
 226         simplerect->fill_color = 0;
 227         simplerect->outline_color = 0;
 228         simplerect->outline_pixels = 1;
 229         simplerect->outline_what = 0xf;
 230 }
 231
 232 static void
 233 gnome_canvas_simplerect_destroy (GtkObject *object)
 234 {
 235         GnomeCanvasSimpleRect *rect;
 236
 237         g_return_if_fail (object != NULL);
 238         g_return_if_fail (GNOME_IS_CANVAS_SIMPLERECT (object));
 239
 240         rect = GNOME_CANVAS_SIMPLERECT (object);
 241
 242         /* remember, destroy can be run multiple times! */
 243
 244         if (GTK_OBJECT_CLASS (parent_class)->destroy)
 245               (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
 246 }
 247
 248 static void
 249 gnome_canvas_simplerect_bounds (GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2)
 250 {
 251         GnomeCanvasSimpleRect *simplerect = GNOME_CANVAS_SIMPLERECT (item);
 252
 253         *x1 = simplerect->x1;
 254         *y1 = simplerect->y1;
 255         *x2 = simplerect->x2 + 1;
 256         *y2 = simplerect->y2 + 1;
 257
 258 }
 259
 260
 261 static void
 262 gnome_canvas_simplerect_reset_bounds (GnomeCanvasItem *item)
 263 {
 264         GnomeCanvasSimpleRect* simplerect;
 265         double x1, x2, y1, y2;
 266         double old_x1, old_x2, old_y1, old_y2;
 267         ArtDRect unionrect, old, new;
 268
 269         old_x1 = item->x1;
 270         old_y1 = item->y1;
 271         old_x2 = item->x2;
 272         old_y2 = item->y2;
 273
 274         gnome_canvas_simplerect_bounds (item, &x1, &y1, &x2, &y2);
 275         gnome_canvas_item_i2w (item, &x1, &y1);
 276         gnome_canvas_item_i2w (item, &x2, &y2);
 277
 278         item->x1 = x1;
 279         item->y1 = y1;
 280         item->x2 = x2;
 281         item->y2 = y2;
 282
 283         /* now compute bounding box in canvas units */
 284
 285         simplerect = GNOME_CANVAS_SIMPLERECT (item);
 286
 287         gnome_canvas_w2c (GNOME_CANVAS(item->canvas), x1, y1, &simplerect->bbox_ulx, &simplerect->bbox_uly);
 288         gnome_canvas_w2c (GNOME_CANVAS(item->canvas), x2, y2, &simplerect->bbox_lrx, &simplerect->bbox_lry);
 289
 290         /* now queue redraws for changed areas */
 291
 292         if (item->x1 == old_x1 && item->x2 == old_x2) {
 293
 294                 /* no change in x-axis position */
 295
 296                 if (item->y1 == old_y1) {
 297                         /* top didn't change, so just draw bottom */
 298
 299                         double start_y = MIN (item->y2, old_y2);
 300                         double end_y = MAX (item->y2, old_y2);
 301
 302                         gnome_canvas_request_redraw (item->canvas, item->x1, start_y - 0.5, item->x2, end_y + 1.5);
 303                         return;
 304
 305                 } else if (item->y2 == old_y2) {
 306
 307                         /* bottom didn't change, just draw top */
 308
 309                         double start_y = MIN (item->y1, old_y1);
 310                         double end_y = MAX (item->y1, old_y1);
 311
 312                         gnome_canvas_request_redraw (item->canvas, item->x1, start_y - 0.5, item->x2, end_y + 1.5);
 313                         return;
 314
 315                 }
 316
 317         } else if (item->y1 == old_y1 && item->y2 == old_y2) {
 318
 319                 /* no change in y-axis position */
 320
 321                 if (item->x1 == old_x1) {
 322                         /* start didn't change, so just draw at the end */
 323
 324                         double start_x = MIN (item->x2, old_x2);
 325                         double end_x = MAX (item->x2, old_x2);
 326
 327                         gnome_canvas_request_redraw (item->canvas, start_x - 0.5, item->y1, end_x + 1.5, item->y2);
 328                         return;
 329
 330                 } else if (item->x2 == old_x2) {
 331
 332                         /* end didn't change, so just draw at the start */
 333
 334                         double start_x = MIN (item->x1, old_x1);
 335                         double end_x = MAX (item->x1, old_x1);
 336
 337                         gnome_canvas_request_redraw (item->canvas, start_x - 0.5, item->y1, end_x + 1.5, item->y2 + 0.5);
 338                         return;
 339
 340                 }
 341         }
 342
 343         new.x0 = x1;
 344         new.y0 = y1;
 345         new.x1 = x2;
 346         new.y1 = y2;
 347
 348         old.x0 = old_x1;
 349         old.y0 = old_y1;
 350         old.x1 = old_x2;
 351         old.y1 = old_y2;
 352
 353         art_drect_union (&unionrect, &old, &new);
 354         gnome_canvas_request_redraw (item->canvas,
 355                                      unionrect.x0 - 0.5,
 356                                      unionrect.y0 - 0.5,
 357                                      unionrect.x1 + 0.5,
 358                                      unionrect.y1 + 0.5);
 359 }
 360
 361 /*
 362  * CANVAS CALLBACKS
 363  */
 364
 365 static void
 366 gnome_canvas_simplerect_set_property (GObject      *object,
 367                                       guint         prop_id,
 368                                       const GValue *value,
 369                                       GParamSpec   *pspec)
 370
 371 {
 372         GnomeCanvasSimpleRect *simplerect;
 373         int update = FALSE;
 374         int bounds_changed = FALSE;
 375         g_return_if_fail (object != NULL);
 376         g_return_if_fail (GNOME_IS_CANVAS_SIMPLERECT (object));
 377
 378         simplerect = GNOME_CANVAS_SIMPLERECT (object);
 379
 380         switch (prop_id) {
 381         case PROP_X1:
 382                 if (simplerect->x1 != g_value_get_double (value)) {
 383                         simplerect->x1 = g_value_get_double (value);
 384                         bounds_changed = TRUE;
 385                 }
 386                 break;
 387
 388         case PROP_Y1:
 389                 if (simplerect->y1 != g_value_get_double (value)) {
 390                         simplerect->y1 = g_value_get_double (value);
 391                         bounds_changed = TRUE;
 392                 }
 393                 break;
 394
 395         case PROP_X2:
 396                 if (simplerect->x2 != g_value_get_double (value)) {
 397                         simplerect->x2 = g_value_get_double (value);
 398                         bounds_changed = TRUE;
 399                 }
 400                 break;
 401
 402         case PROP_Y2:
 403                 if (simplerect->y2 != g_value_get_double (value)) {
 404                         simplerect->y2 = g_value_get_double (value);
 405                         bounds_changed = TRUE;
 406                 }
 407                 break;
 408
 409         case PROP_DRAW:
 410                 if (simplerect->draw != g_value_get_boolean (value)) {
 411                         simplerect->draw = g_value_get_boolean (value);
 412                         update = TRUE;
 413                 }
 414                 break;
 415
 416
 417         case PROP_FILL:
 418                 if (simplerect->fill != g_value_get_boolean (value)) {
 419                         simplerect->fill = g_value_get_boolean (value);
 420                         update = TRUE;
 421                 }
 422                 break;
 423
 424         case PROP_FILL_COLOR_RGBA:
 425                 if (simplerect->fill_color != g_value_get_uint(value)) {
 426                         simplerect->fill_color = g_value_get_uint(value);
 427                         update = TRUE;
 428                 }
 429                 break;
 430
 431         case PROP_OUTLINE_COLOR_RGBA:
 432                 if (simplerect->outline_color != g_value_get_uint(value)) {
 433                         simplerect->outline_color = g_value_get_uint(value);
 434                         update = TRUE;
 435                 }
 436                 break;
 437
 438         case PROP_OUTLINE_PIXELS:
 439                 if (simplerect->outline_pixels != g_value_get_uint(value)) {
 440                         simplerect->outline_pixels = g_value_get_uint(value);
 441                         update = TRUE;
 442                 }
 443                 break;
 444
 445         case PROP_OUTLINE_WHAT:
 446                 if (simplerect->outline_what != g_value_get_uint(value)) {
 447                         simplerect->outline_what = g_value_get_uint(value);
 448                         update = TRUE;
 449                 }
 450                 break;
 451
 452         default:
 453                 break;
 454         }
 455
 456         simplerect->full_draw_on_update = update;
 457
 458         if (update || bounds_changed) {
 459                 gnome_canvas_item_request_update (GNOME_CANVAS_ITEM(object));
 460         }
 461 }
 462
 463 static void
 464 gnome_canvas_simplerect_get_property (GObject      *object,
 465                                       guint         prop_id,
 466                                       GValue       *value,
 467                                       GParamSpec   *pspec)
 468 {
 469         GnomeCanvasSimpleRect *rect = GNOME_CANVAS_SIMPLERECT (object);
 470
 471         g_return_if_fail (object != NULL);
 472         g_return_if_fail (GNOME_IS_CANVAS_SIMPLERECT (object));
 473
 474         switch (prop_id) {
 475         case PROP_X1:
 476                 g_value_set_double (value, rect->x1);
 477                 break;
 478         case PROP_X2:
 479                 g_value_set_double (value, rect->x2);
 480                 break;
 481         case PROP_Y1:
 482                 g_value_set_double (value, rect->y1);
 483                 break;
 484         case PROP_Y2:
 485                 g_value_set_double (value, rect->y2);
 486                 break;
 487         case PROP_OUTLINE_WHAT:
 488                 g_value_set_uint (value, rect->outline_what);
 489                 break;
 490         case PROP_FILL:
 491                 g_value_set_boolean (value, rect->fill);
 492                 break;
 493         case PROP_OUTLINE_PIXELS:
 494                 g_value_set_uint (value, rect->outline_pixels);
 495                 break;
 496         case PROP_FILL_COLOR_RGBA:
 497                 g_value_set_uint (value, rect->fill_color);
 498                 break;
 499         case PROP_OUTLINE_COLOR_RGBA:
 500                 g_value_set_uint (value, rect->outline_color);
 501                 break;
 502         case PROP_DRAW:
 503                 g_value_set_boolean (value, rect->draw);
 504                 break;
 505
 506         default:
 507                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 508                 break;
 509         }
 510 }
 511
 512
 513 static void
 514 gnome_canvas_simplerect_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
 515 {
 516         GnomeCanvasSimpleRect *simplerect;
 517         unsigned char foo;
 518
 519         simplerect = GNOME_CANVAS_SIMPLERECT (item);
 520
 521         if (parent_class->update)
 522                 (* parent_class->update) (item, affine, clip_path, flags);
 523
 524         gnome_canvas_simplerect_reset_bounds (item);
 525
 526         if (simplerect->full_draw_on_update) {
 527                 gnome_canvas_request_redraw (item->canvas,
 528                                            simplerect->bbox_ulx,
 529                                            simplerect->bbox_uly,
 530                                            simplerect->bbox_lrx+0.5,
 531                                            simplerect->bbox_lry+0.5);
 532                 simplerect->full_draw_on_update = FALSE;
 533         }
 534
 535         UINT_TO_RGBA (simplerect->fill_color, &simplerect->fill_r, &simplerect->fill_g, &simplerect->fill_b, &simplerect->fill_a);
 536         UINT_TO_RGBA (simplerect->outline_color, &simplerect->outline_r, &simplerect->outline_g, &simplerect->outline_b, &foo);
 537 }
 538
 539 // this can be useful for debugging/understanding how the canvas redraws
 540 // stuff.
 541
 542 #undef HARLEQUIN_DEBUGGING
 543
 544 #undef SIMPLERECT_FAST_RENDERER
 545 #ifdef SIMPLERECT_FAST_RENDERER
 546
 547 static void
 548 gnome_canvas_simplerect_render (GnomeCanvasItem *item,
 549                               GnomeCanvasBuf *buf)
 550 {
 551         GnomeCanvasSimpleRect *simplerect;
 552         int end, begin;
 553         int ey, sy;
 554         unsigned int i;
 555         ArtIRect intersection;
 556         ArtIRect self;
 557
 558         simplerect = GNOME_CANVAS_SIMPLERECT (item);
 559
 560         if (parent_class->render) {
 561                 (*parent_class->render) (item, buf);
 562         }
 563
 564         if (buf->is_bg) {
 565
 566 #ifdef HARLEQUIN_DEBUGGING
 567                 gint randr, randg, randb;
 568                 randr = random() % 255;
 569                 randg = random() % 255;
 570                 randb = random() % 255;
 571                 PAINT_BOX(buf, randr, randg, randb, 255, buf->rect.x0, buf->rect.y0, buf->rect.x1, buf->rect.y1);
 572 #endif
 573                 gnome_canvas_buf_ensure_buf (buf);
 574                 buf->is_bg = FALSE;
 575         }
 576
 577         if (!simplerect->draw) {
 578                 return;
 579         }
 580
 581         self.x0 = simplerect->bbox_ulx;
 582         self.y0 = simplerect->bbox_uly;
 583         self.x1 = simplerect->bbox_lrx;
 584         self.y1 = simplerect->bbox_lry;
 585
 586         art_irect_intersect (&intersection, &self, &buf->rect);
 587
 588         begin = MAX(simplerect->bbox_ulx, buf->rect.x0);
 589         end = MIN((simplerect->bbox_lrx-1), buf->rect.x1);
 590
 591         sy = simplerect->bbox_uly;
 592         ey = simplerect->bbox_lry-1;
 593
 594         if (simplerect->fill) {
 595
 596                 // this can be useful for debugging/understanding how the canvas redraws
 597                 // stuff.
 598
 599 #ifdef HARLEQUIN_DEBUGGING
 600                 gint randr, randg, randb;
 601                 randr = random() % 255;
 602                 randg = random() % 255;
 603                 randb = random() % 255;
 604                 PAINT_BOX(buf, randr, randg, randb, simplerect->fill_a, begin, sy, end, ey);
 605 #else
 606                 PAINT_BOX (buf, simplerect->fill_r, simplerect->fill_g, simplerect->fill_b, simplerect->fill_a,
 607                            intersection.x0, intersection.y0,
 608                            intersection.x1, intersection.y1);
 609 #endif
 610
 611         }
 612
 613         for (i = 0; i < simplerect->outline_pixels; ++i) {
 614
 615                 if (simplerect->outline_what & 0x1) {
 616                         if (begin == simplerect->bbox_ulx) {
 617                                 PAINT_VERT(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, begin + i, sy, ey);
 618                         }
 619                 }
 620
 621                 if (simplerect->outline_what & 0x2) {
 622                         if (end == (simplerect->bbox_lrx - 1)) {
 623                                 PAINT_VERT(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, end - i, sy, ey + 1);
 624                         }
 625                 }
 626
 627                 if (simplerect->outline_what & 0x4) {
 628                         PAINT_HORIZ(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, begin, end, sy+i);
 629                 }
 630
 631                 if (simplerect->outline_what & 0x8) {
 632                         PAINT_HORIZ(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, begin, end + 1, ey-i);
 633                 }
 634         }
 635 }
 636
 637 #else /* SIMPLERECT_FAST_RENDERER */
 638
 639 static void
 640 gnome_canvas_simplerect_render (GnomeCanvasItem *item,
 641                               GnomeCanvasBuf *buf)
 642 {
 643         GnomeCanvasSimpleRect *simplerect;
 644         int end, begin;
 645         int ey, sy;
 646         unsigned int i;
 647
 648         simplerect = GNOME_CANVAS_SIMPLERECT (item);
 649
 650         if (parent_class->render) {
 651                 (*parent_class->render) (item, buf);
 652         }
 653
 654         if (buf->is_bg) {
 655
 656 #ifdef HARLEQUIN_DEBUGGING
 657                 gint randr, randg, randb;
 658                 randr = random() % 255;
 659                 randg = random() % 255;
 660                 randb = random() % 255;
 661                 PAINT_BOX(buf, randr, randg, randb, 255, buf->rect.x0, buf->rect.y0, buf->rect.x1, buf->rect.y1);
 662 #endif
 663                 gnome_canvas_buf_ensure_buf (buf);
 664                 buf->is_bg = FALSE;
 665         }
 666
 667         if (!simplerect->draw) {
 668                 return;
 669         }
 670
 671         begin = MAX(simplerect->bbox_ulx,buf->rect.x0);
 672         end = MIN((simplerect->bbox_lrx-1),buf->rect.x1);
 673
 674         sy = simplerect->bbox_uly;
 675         ey = simplerect->bbox_lry-1;
 676
 677         if (simplerect->fill) {
 678
 679 #ifdef HARLEQUIN_DEBUGGING
 680                 gint randr, randg, randb;
 681                 randr = random() % 255;
 682                 randg = random() % 255;
 683                 randb = random() % 255;
 684                 PAINT_BOX(buf, randr, randg, randb, simplerect->fill_a, begin, sy, end, ey);
 685 #else
 686                 PAINT_BOX(buf, simplerect->fill_r, simplerect->fill_g, simplerect->fill_b, simplerect->fill_a, begin, sy, end, ey);
 687 #endif
 688         }
 689
 690         for (i = 0; i < simplerect->outline_pixels; ++i) {
 691
 692                 if (simplerect->outline_what & 0x1) {
 693                         if (begin == simplerect->bbox_ulx) {
 694                                 PAINT_VERT(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, begin + i, sy, ey);
 695                         }
 696                 }
 697
 698                 if (simplerect->outline_what & 0x2) {
 699                         if (end == (simplerect->bbox_lrx - 1)) {
 700                                 PAINT_VERT(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, end - i, sy, ey + 1);
 701                         }
 702                 }
 703
 704                 if (simplerect->outline_what & 0x4) {
 705                         PAINT_HORIZ(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, begin, end, sy+i);
 706                 }
 707
 708                 if (simplerect->outline_what & 0x8) {
 709                         PAINT_HORIZ(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, begin, end + 1, ey-i);
 710                 }
 711         }
 712 }
 713 #endif /* SIMPLERECT_FAST_RENDERER */
 714
 715 static void
 716 gnome_canvas_simplerect_draw (GnomeCanvasItem *item,
 717                             GdkDrawable *drawable,
 718                             int x, int y,
 719                             int width, int height)
 720 {
 721         fprintf (stderr, "please don't use the CanvasSimpleRect item in a non-aa Canvas\n");
 722         abort ();
 723 }
 724
 725 static double
 726 gnome_canvas_simplerect_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item)
 727 {
 728         GnomeCanvasSimpleRect *simplerect;
 729         double x1, y1, x2, y2;
 730         double dx, dy;
 731
 732         simplerect = GNOME_CANVAS_SIMPLERECT (item);
 733
 734         *actual_item = item;
 735
 736         /* Find the bounds for the rectangle plus its outline width */
 737
 738         gnome_canvas_simplerect_bounds (item, &x1, &y1, &x2, &y2);
 739
 740         /* Is point inside rectangle */
 741
 742         if ((x >= x1) && (y >= y1) && (x <= x2) && (y <= y2)) {
 743                 return 0.0;
 744         }
 745
 746         /* Point is outside rectangle */
 747
 748         if (x < x1)
 749                 dx = x1 - x;
 750         else if (x > x2)
 751                 dx = x - x2;
 752         else
 753                 dx = 0.0;
 754
 755         if (y < y1)
 756                 dy = y1 - y;
 757         else if (y > y2)
 758                 dy = y - y2;
 759         else
 760                 dy = 0.0;
 761
 762         return sqrt (dx * dx + dy * dy);
 763 }