gtk2_ardour/canvas-simplerect.c

   1 #include <stdio.h>
   2 #include <math.h>
   3 #include <cairo.h>
   4 #include <libgnomecanvas/libgnomecanvas.h>
   5
   6 #include "canvas-simplerect.h"
   7 #include "rgb_macros.h"
   8 #include "gettext.h"
   9 #define _(Text)  dgettext (PACKAGE,Text)
  10
  11 enum {
  12         PROP_0,
  13         PROP_X1,
  14         PROP_Y1,
  15         PROP_X2,
  16         PROP_Y2,
  17         PROP_OUTLINE_PIXELS,
  18         PROP_OUTLINE_WHAT,
  19         PROP_FILL,
  20         PROP_FILL_COLOR_RGBA,
  21         PROP_OUTLINE_COLOR_RGBA,
  22         PROP_DRAW
  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 static void
 261 gnome_canvas_simplerect_reset_bounds (GnomeCanvasItem *item)
 262 {
 263         GnomeCanvasSimpleRect* simplerect;
 264         double x1, x2, y1, y2;
 265         double old_x1, old_x2, old_y1, old_y2;
 266         ArtDRect unionrect, old, new;
 267
 268         old_x1 = item->x1;
 269         old_y1 = item->y1;
 270         old_x2 = item->x2;
 271         old_y2 = item->y2;
 272
 273         gnome_canvas_simplerect_bounds (item, &x1, &y1, &x2, &y2);
 274         gnome_canvas_item_i2w (item, &x1, &y1);
 275         gnome_canvas_item_i2w (item, &x2, &y2);
 276
 277         item->x1 = x1;
 278         item->y1 = y1;
 279         item->x2 = x2;
 280         item->y2 = y2;
 281
 282         /* now compute bounding box in canvas units */
 283
 284         simplerect = GNOME_CANVAS_SIMPLERECT (item);
 285
 286         gnome_canvas_w2c (GNOME_CANVAS(item->canvas), x1, y1, &simplerect->bbox_ulx, &simplerect->bbox_uly);
 287         gnome_canvas_w2c (GNOME_CANVAS(item->canvas), x2, y2, &simplerect->bbox_lrx, &simplerect->bbox_lry);
 288
 289         /* now queue redraws for changed areas */
 290
 291         if (item->x1 == old_x1 && item->x2 == old_x2) {
 292
 293                 /* no change in x-axis position */
 294
 295                 if (item->y1 == old_y1) {
 296                         /* top didn't change, so just draw bottom */
 297
 298                         double start_y = MIN (item->y2, old_y2);
 299                         double end_y = MAX (item->y2, old_y2);
 300
 301                         gnome_canvas_request_redraw (item->canvas, item->x1, start_y - 0.5, item->x2, end_y + 1.5);
 302                         return;
 303
 304                 } else if (item->y2 == old_y2) {
 305
 306                         /* bottom didn't change, just draw top */
 307
 308                         double start_y = MIN (item->y1, old_y1);
 309                         double end_y = MAX (item->y1, old_y1);
 310
 311                         gnome_canvas_request_redraw (item->canvas, item->x1, start_y - 0.5, item->x2, end_y + 1.5);
 312                         return;
 313
 314                 }
 315
 316         } else if (item->y1 == old_y1 && item->y2 == old_y2) {
 317
 318                 /* no change in y-axis position */
 319
 320                 if (item->x1 == old_x1) {
 321                         /* start didn't change, so just draw at the end */
 322
 323                         double start_x = MIN (item->x2, old_x2);
 324                         double end_x = MAX (item->x2, old_x2);
 325
 326                         gnome_canvas_request_redraw (item->canvas, start_x - 0.5, item->y1, end_x + 1.5, item->y2 + 0.5);
 327                         return;
 328
 329                 } else if (item->x2 == old_x2) {
 330
 331                         /* end didn't change, so just draw at the start */
 332
 333                         double start_x = MIN (item->x1, old_x1);
 334                         double end_x = MAX (item->x1, old_x1);
 335
 336                         gnome_canvas_request_redraw (item->canvas, start_x - 0.5, item->y1, end_x + 1.5, item->y2 + 0.5);
 337                         return;
 338
 339                 }
 340         }
 341
 342         new.x0 = x1;
 343         new.y0 = y1;
 344         new.x1 = x2;
 345         new.y1 = y2;
 346
 347         old.x0 = old_x1;
 348         old.y0 = old_y1;
 349         old.x1 = old_x2;
 350         old.y1 = old_y2;
 351
 352         art_drect_union (&unionrect, &old, &new);
 353         gnome_canvas_request_redraw (item->canvas,
 354                                      unionrect.x0 - 0.5,
 355                                      unionrect.y0 - 0.5,
 356                                      unionrect.x1 + 1.5,
 357                                      unionrect.y1 + 1.5);
 358 }
 359
 360 /*
 361  * CANVAS CALLBACKS
 362  */
 363
 364 static void
 365 gnome_canvas_simplerect_set_property (GObject      *object,
 366                                       guint         prop_id,
 367                                       const GValue *value,
 368                                       GParamSpec   *pspec)
 369
 370 {
 371         (void) pspec;
 372
 373         GnomeCanvasSimpleRect *simplerect;
 374         int update = FALSE;
 375         int bounds_changed = FALSE;
 376         g_return_if_fail (object != NULL);
 377         g_return_if_fail (GNOME_IS_CANVAS_SIMPLERECT (object));
 378
 379         simplerect = GNOME_CANVAS_SIMPLERECT (object);
 380
 381         switch (prop_id) {
 382         case PROP_X1:
 383                 if (simplerect->x1 != g_value_get_double (value)) {
 384                         simplerect->x1 = g_value_get_double (value);
 385                         bounds_changed = TRUE;
 386                 }
 387                 break;
 388
 389         case PROP_Y1:
 390                 if (simplerect->y1 != g_value_get_double (value)) {
 391                         simplerect->y1 = g_value_get_double (value);
 392                         bounds_changed = TRUE;
 393                 }
 394                 break;
 395
 396         case PROP_X2:
 397                 if (simplerect->x2 != g_value_get_double (value)) {
 398                         simplerect->x2 = g_value_get_double (value);
 399                         bounds_changed = TRUE;
 400                 }
 401                 break;
 402
 403         case PROP_Y2:
 404                 if (simplerect->y2 != g_value_get_double (value)) {
 405                         simplerect->y2 = g_value_get_double (value);
 406                         bounds_changed = TRUE;
 407                 }
 408                 break;
 409
 410         case PROP_DRAW:
 411                 if (simplerect->draw != g_value_get_boolean (value)) {
 412                         simplerect->draw = g_value_get_boolean (value);
 413                         update = TRUE;
 414                 }
 415                 break;
 416
 417
 418         case PROP_FILL:
 419                 if (simplerect->fill != g_value_get_boolean (value)) {
 420                         simplerect->fill = g_value_get_boolean (value);
 421                         update = TRUE;
 422                 }
 423                 break;
 424
 425         case PROP_FILL_COLOR_RGBA:
 426                 if (simplerect->fill_color != g_value_get_uint(value)) {
 427                         simplerect->fill_color = g_value_get_uint(value);
 428                         update = TRUE;
 429                 }
 430                 break;
 431
 432         case PROP_OUTLINE_COLOR_RGBA:
 433                 if (simplerect->outline_color != g_value_get_uint(value)) {
 434                         simplerect->outline_color = g_value_get_uint(value);
 435                         update = TRUE;
 436                 }
 437                 break;
 438
 439         case PROP_OUTLINE_PIXELS:
 440                 if (simplerect->outline_pixels != g_value_get_uint(value)) {
 441                         simplerect->outline_pixels = g_value_get_uint(value);
 442                         update = TRUE;
 443                 }
 444                 break;
 445
 446         case PROP_OUTLINE_WHAT:
 447                 if (simplerect->outline_what != g_value_get_uint(value)) {
 448                         simplerect->outline_what = g_value_get_uint(value);
 449                         update = TRUE;
 450                 }
 451                 break;
 452
 453         default:
 454                 break;
 455         }
 456
 457         if (!simplerect->full_draw_on_update) {
 458                 /* XXX: not sure about this;
 459                  *
 460                  * I changed the next line to be conditional, rather than always
 461                  * being executed.  Without the condition, the following bug occurs:
 462                  *
 463                  * caller sets a property (e.g. outline colour); this sets update = TRUE and hence full_draw_on_update = TRUE
 464                  * update is requested (and it is intended, I suppose, that during this update, full_draw_on_update is noted)
 465                  * ... update does not occur before ...
 466                  * caller sets the same property again to the same value; this sets update = FALSE and hence full_draw_on_update = FALSE
 467                  * update now occurs, but full_draw_on_update is FALSE, so the full redraw does not happen,
 468                  * which results in graphical glitches.
 469                  *
 470                  * (Carl, 2/1/2010)
 471                  */
 472                 simplerect->full_draw_on_update = update;
 473         }
 474
 475         if (update || bounds_changed) {
 476                 gnome_canvas_item_request_update (GNOME_CANVAS_ITEM(object));
 477         }
 478 }
 479
 480 static void
 481 gnome_canvas_simplerect_get_property (GObject      *object,
 482                                       guint         prop_id,
 483                                       GValue       *value,
 484                                       GParamSpec   *pspec)
 485 {
 486         GnomeCanvasSimpleRect *rect = GNOME_CANVAS_SIMPLERECT (object);
 487
 488         g_return_if_fail (object != NULL);
 489         g_return_if_fail (GNOME_IS_CANVAS_SIMPLERECT (object));
 490
 491         switch (prop_id) {
 492         case PROP_X1:
 493                 g_value_set_double (value, rect->x1);
 494                 break;
 495         case PROP_X2:
 496                 g_value_set_double (value, rect->x2);
 497                 break;
 498         case PROP_Y1:
 499                 g_value_set_double (value, rect->y1);
 500                 break;
 501         case PROP_Y2:
 502                 g_value_set_double (value, rect->y2);
 503                 break;
 504         case PROP_OUTLINE_WHAT:
 505                 g_value_set_uint (value, rect->outline_what);
 506                 break;
 507         case PROP_FILL:
 508                 g_value_set_boolean (value, rect->fill);
 509                 break;
 510         case PROP_OUTLINE_PIXELS:
 511                 g_value_set_uint (value, rect->outline_pixels);
 512                 break;
 513         case PROP_FILL_COLOR_RGBA:
 514                 g_value_set_uint (value, rect->fill_color);
 515                 break;
 516         case PROP_OUTLINE_COLOR_RGBA:
 517                 g_value_set_uint (value, rect->outline_color);
 518                 break;
 519         case PROP_DRAW:
 520                 g_value_set_boolean (value, rect->draw);
 521                 break;
 522
 523         default:
 524                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 525                 break;
 526         }
 527 }
 528
 529
 530 static void
 531 gnome_canvas_simplerect_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
 532 {
 533         GnomeCanvasSimpleRect *simplerect;
 534
 535         simplerect = GNOME_CANVAS_SIMPLERECT (item);
 536
 537         if (parent_class->update)
 538                 (* parent_class->update) (item, affine, clip_path, flags);
 539
 540         gnome_canvas_simplerect_reset_bounds (item);
 541
 542         if (simplerect->full_draw_on_update) {
 543                 gnome_canvas_request_redraw (item->canvas,
 544                                              simplerect->bbox_ulx,
 545                                              simplerect->bbox_uly,
 546                                              simplerect->bbox_lrx+0.5,
 547                                              simplerect->bbox_lry+0.5);
 548                 simplerect->full_draw_on_update = FALSE;
 549         }
 550
 551         UINT_TO_RGBA (simplerect->fill_color, &simplerect->fill_r, &simplerect->fill_g, &simplerect->fill_b, &simplerect->fill_a);
 552         UINT_TO_RGBA (simplerect->outline_color, &simplerect->outline_r, &simplerect->outline_g, &simplerect->outline_b, &simplerect->outline_a);
 553 }
 554
 555 // this can be useful for debugging/understanding how the canvas redraws
 556 // stuff.
 557
 558 #undef HARLEQUIN_DEBUGGING
 559
 560 #undef SIMPLERECT_FAST_RENDERER
 561 #ifdef SIMPLERECT_FAST_RENDERER
 562
 563 static void
 564 gnome_canvas_simplerect_render (GnomeCanvasItem *item,
 565                               GnomeCanvasBuf *buf)
 566 {
 567         GnomeCanvasSimpleRect *simplerect;
 568         int end, begin;
 569         int ey, sy;
 570         unsigned int i;
 571         ArtIRect intersection;
 572         ArtIRect self;
 573
 574         simplerect = GNOME_CANVAS_SIMPLERECT (item);
 575
 576         if (parent_class->render) {
 577                 (*parent_class->render) (item, buf);
 578         }
 579
 580         if (buf->is_bg) {
 581
 582 #ifdef HARLEQUIN_DEBUGGING
 583                 gint randr, randg, randb;
 584                 randr = random() % 255;
 585                 randg = random() % 255;
 586                 randb = random() % 255;
 587                 PAINT_BOX(buf, randr, randg, randb, 255, buf->rect.x0, buf->rect.y0, buf->rect.x1, buf->rect.y1);
 588 #endif
 589                 gnome_canvas_buf_ensure_buf (buf);
 590                 buf->is_bg = FALSE;
 591         }
 592
 593         if (!simplerect->draw) {
 594                 return;
 595         }
 596
 597         self.x0 = simplerect->bbox_ulx;
 598         self.y0 = simplerect->bbox_uly;
 599         self.x1 = simplerect->bbox_lrx;
 600         self.y1 = simplerect->bbox_lry;
 601
 602         art_irect_intersect (&intersection, &self, &buf->rect);
 603
 604         begin = MAX(simplerect->bbox_ulx, buf->rect.x0);
 605         end = MIN((simplerect->bbox_lrx-1), buf->rect.x1);
 606
 607         sy = simplerect->bbox_uly;
 608         ey = simplerect->bbox_lry-1;
 609
 610         if (simplerect->fill) {
 611
 612                 // this can be useful for debugging/understanding how the canvas redraws
 613                 // stuff.
 614
 615 #ifdef HARLEQUIN_DEBUGGING
 616                 gint randr, randg, randb;
 617                 randr = random() % 255;
 618                 randg = random() % 255;
 619                 randb = random() % 255;
 620                 PAINT_BOX(buf, randr, randg, randb, simplerect->fill_a, begin, sy, end, ey);
 621 #else
 622                 PAINT_BOX (buf, simplerect->fill_r, simplerect->fill_g, simplerect->fill_b, simplerect->fill_a,
 623                            intersection.x0, intersection.y0,
 624                            intersection.x1, intersection.y1);
 625 #endif
 626
 627         }
 628
 629         if (simplerect->outline_a > 0) {
 630                 for (i = 0; i < simplerect->outline_pixels; ++i) {
 631
 632                         if (simplerect->outline_what & 0x1) {
 633                                 if (begin == simplerect->bbox_ulx) {
 634                                         PAINT_VERTA(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, simplerect->outline_a, begin + i, sy, ey);
 635                                 }
 636                         }
 637
 638                         if (simplerect->outline_what & 0x2) {
 639                                 if (end == (simplerect->bbox_lrx - 1)) {
 640                                         PAINT_VERTA(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, simplerect->outline_a, end - i, sy, ey + 1);
 641                                 }
 642                         }
 643
 644                         if (simplerect->outline_what & 0x4) {
 645                                 PAINT_HORIZA(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, simplerect->outline_a, begin, end, sy+i);
 646                         }
 647
 648                         if (simplerect->outline_what & 0x8) {
 649                                 PAINT_HORIZA(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, simplerect->outline_a, begin, end + 1, ey-i);
 650                         }
 651                 }
 652         }
 653 }
 654
 655 #else /* SIMPLERECT_FAST_RENDERER */
 656
 657 static void
 658 gnome_canvas_simplerect_render (GnomeCanvasItem *item,
 659                               GnomeCanvasBuf *buf)
 660 {
 661         GnomeCanvasSimpleRect *simplerect;
 662         int end, begin;
 663         int ey, sy;
 664         int i;
 665
 666         simplerect = GNOME_CANVAS_SIMPLERECT (item);
 667
 668         if (parent_class->render) {
 669                 (*parent_class->render) (item, buf);
 670         }
 671
 672         if (buf->is_bg) {
 673
 674 #ifdef HARLEQUIN_DEBUGGING
 675                 gint randr, randg, randb;
 676                 randr = random() % 255;
 677                 randg = random() % 255;
 678                 randb = random() % 255;
 679                 PAINT_BOX(buf, randr, randg, randb, 255, buf->rect.x0, buf->rect.y0, buf->rect.x1, buf->rect.y1);
 680 #endif
 681                 gnome_canvas_buf_ensure_buf (buf);
 682                 buf->is_bg = FALSE;
 683         }
 684
 685         if (!simplerect->draw) {
 686                 return;
 687         }
 688
 689         begin = MAX(simplerect->bbox_ulx,buf->rect.x0);
 690         end = MIN((simplerect->bbox_lrx-1),buf->rect.x1);
 691
 692         sy = simplerect->bbox_uly;
 693         ey = simplerect->bbox_lry-1;
 694
 695         if (simplerect->fill) {
 696
 697 #ifdef HARLEQUIN_DEBUGGING
 698                 gint randr, randg, randb;
 699                 randr = random() % 255;
 700                 randg = random() % 255;
 701                 randb = random() % 255;
 702                 PAINT_BOX(buf, randr, randg, randb, simplerect->fill_a, begin, sy, end, ey);
 703 #else
 704                 PAINT_BOX(buf, simplerect->fill_r, simplerect->fill_g, simplerect->fill_b, simplerect->fill_a, begin, sy, end, ey);
 705 #endif
 706         }
 707
 708         if (simplerect->outline_a) {
 709                 for (i = 0; i < (int) simplerect->outline_pixels; ++i) {
 710
 711                         if (simplerect->outline_what & 0x1) {
 712                                 if (begin == simplerect->bbox_ulx) {
 713                                         PAINT_VERTA(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, simplerect->outline_a, begin + i, sy, ey);
 714                                 }
 715                         }
 716
 717                         if (simplerect->outline_what & 0x2) {
 718                                 if (end == (simplerect->bbox_lrx - 1)) {
 719                                         PAINT_VERTA(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, simplerect->outline_a, end - i, sy, ey + 1);
 720                                 }
 721                         }
 722
 723                         if (simplerect->outline_what & 0x4) {
 724                                 PAINT_HORIZA(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, simplerect->outline_a, begin, end, sy+i);
 725                         }
 726
 727                         if (simplerect->outline_what & 0x8) {
 728                                 PAINT_HORIZA(buf, simplerect->outline_r, simplerect->outline_g, simplerect->outline_b, simplerect->outline_a, begin, end + 1, ey-i);
 729                         }
 730                 }
 731         }
 732 }
 733 #endif /* SIMPLERECT_FAST_RENDERER */
 734
 735 static void
 736 gnome_canvas_simplerect_draw (GnomeCanvasItem *item,
 737                               GdkDrawable *drawable,
 738                               int x, int y,
 739                               int width, int height)
 740 {
 741         GnomeCanvasSimpleRect *simplerect;
 742         cairo_t* cr;
 743         double ulx;
 744         double uly;
 745         double lrx;
 746         double lry;
 747
 748         simplerect = GNOME_CANVAS_SIMPLERECT (item);
 749
 750         cr = gdk_cairo_create (drawable);
 751
 752         if (x > simplerect->bbox_ulx) {
 753                 ulx = x;
 754         } else {
 755                 ulx = simplerect->bbox_ulx;
 756         }
 757
 758         if (y > simplerect->bbox_uly) {
 759                 uly = y;
 760         } else {
 761                 uly = simplerect->bbox_uly;
 762         }
 763
 764         if (x + width > simplerect->bbox_lrx) {
 765                 lrx = simplerect->bbox_lrx;
 766         } else {
 767                 lrx = x + width;
 768         }
 769
 770         if (y + height > simplerect->bbox_lry) {
 771                 lry = simplerect->bbox_lry;
 772         } else {
 773                 lry = y + height;
 774         }
 775
 776         ulx -= x;
 777         uly -= y;
 778         lrx -= x;
 779         lry -= y;
 780
 781         cairo_rectangle (cr, ulx, uly, lrx - ulx, lry - uly);
 782
 783         if (simplerect->fill) {
 784                 cairo_set_source_rgba (cr,
 785                                        simplerect->fill_r/255.0,
 786                                        simplerect->fill_g/255.0,
 787                                        simplerect->fill_b/255.0,
 788                                        simplerect->fill_a/255.0);
 789                 cairo_fill (cr);
 790         }
 791
 792         if (simplerect->outline_what && simplerect->outline_pixels) {
 793
 794 #define x_in_range(a) (x <= (a) && (a) < x + width)
 795 #define y_in_range(a) (y <= (a) && (a) < y + height)
 796
 797                 cairo_set_line_width (cr, simplerect->outline_pixels);
 798
 799                 cairo_set_source_rgb (cr,
 800                                       simplerect->outline_r/255.0,
 801                                       simplerect->outline_g/255.0,
 802                                       simplerect->outline_b/255.0);
 803
 804                 if (simplerect->outline_what & 0x1) {
 805                         /* left edge, if visible */
 806                         if (x_in_range (simplerect->bbox_ulx)) {
 807                                 cairo_move_to (cr, ulx+0.5, uly+0.5);
 808                                 cairo_line_to (cr, ulx+0.5, lry+0.5);
 809                                 cairo_stroke (cr);
 810                         }
 811                 }
 812
 813                 if (simplerect->outline_what & 0x2) {
 814                         /* right edge, if visible */
 815                         if (x_in_range (simplerect->bbox_lrx)) {
 816                                 cairo_move_to (cr, lrx+0.5, uly+0.5);
 817                                 cairo_line_to (cr, lrx+0.5, lry+0.5);
 818                                 cairo_stroke (cr);
 819                         }
 820                 }
 821
 822                 if (simplerect->outline_what & 0x4) {
 823                         /* top edge */
 824                         if (y_in_range (simplerect->bbox_uly)) {
 825                                 cairo_move_to (cr, ulx+0.5, uly+0.5);
 826                                 cairo_line_to (cr, lrx+0.5, uly+0.5);
 827                                 cairo_stroke (cr);
 828                         }
 829                 }
 830
 831                 if (simplerect->outline_what & 0x8) {
 832                         /* bottom edge */
 833                         if (y_in_range (simplerect->bbox_lry)) {
 834                                 cairo_move_to (cr, ulx+0.5, lry+0.5);
 835                                 cairo_line_to (cr, lrx+0.5, lry+0.5);
 836                                 cairo_stroke (cr);
 837                         }
 838                 }
 839         }
 840
 841         cairo_destroy (cr);
 842 }
 843
 844 static double
 845 gnome_canvas_simplerect_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item)
 846 {
 847         (void) cx;
 848         (void) cy;
 849
 850         GnomeCanvasSimpleRect *simplerect;
 851         double x1, y1, x2, y2;
 852         double dx, dy;
 853
 854         simplerect = GNOME_CANVAS_SIMPLERECT (item);
 855
 856         *actual_item = item;
 857
 858         /* Find the bounds for the rectangle plus its outline width */
 859
 860         gnome_canvas_simplerect_bounds (item, &x1, &y1, &x2, &y2);
 861
 862         /* Is point inside rectangle */
 863
 864         if ((x >= x1) && (y >= y1) && (x <= x2) && (y <= y2)) {
 865                 return 0.0;
 866         }
 867
 868         /* Point is outside rectangle */
 869
 870         if (x < x1)
 871                 dx = x1 - x;
 872         else if (x > x2)
 873                 dx = x - x2;
 874         else
 875                 dx = 0.0;
 876
 877         if (y < y1)
 878                 dy = y1 - y;
 879         else if (y > y2)
 880                 dy = y - y2;
 881         else
 882                 dy = 0.0;
 883
 884         return sqrt (dx * dx + dy * dy);
 885 }