4 #include <libgnomecanvas/libgnomecanvas.h>
6 #include "canvas-simplerect.h"
7 #include "rgb_macros.h"
9 #define _(Text) dgettext (PACKAGE,Text)
21 PROP_OUTLINE_COLOR_RGBA,
25 static void gnome_canvas_simplerect_class_init (GnomeCanvasSimpleRectClass *class);
27 static void gnome_canvas_simplerect_init (GnomeCanvasSimpleRect *simplerect);
29 static void gnome_canvas_simplerect_destroy (GtkObject *object);
31 static void gnome_canvas_simplerect_set_property (GObject *object,
36 static void gnome_canvas_simplerect_get_property (GObject *object,
41 static void gnome_canvas_simplerect_update (GnomeCanvasItem *item,
46 static void gnome_canvas_simplerect_bounds (GnomeCanvasItem *item,
52 static double gnome_canvas_simplerect_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item);
54 static void gnome_canvas_simplerect_render (GnomeCanvasItem *item, GnomeCanvasBuf *buf);
56 static void gnome_canvas_simplerect_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x, int y, int w, int h);
58 static GnomeCanvasItemClass *parent_class;
62 gnome_canvas_simplerect_get_type (void)
64 static GType simplerect_type;
66 if (!simplerect_type) {
67 static const GTypeInfo object_info = {
68 sizeof (GnomeCanvasSimpleRectClass),
70 (GBaseFinalizeFunc) NULL,
71 (GClassInitFunc) gnome_canvas_simplerect_class_init,
72 (GClassFinalizeFunc) NULL,
73 NULL, /* class_data */
74 sizeof (GnomeCanvasSimpleRect),
76 (GInstanceInitFunc) gnome_canvas_simplerect_init,
77 NULL /* value_table */
80 simplerect_type = g_type_register_static (GNOME_TYPE_CANVAS_ITEM, "GnomeCanvasSimpleRect",
84 return simplerect_type;
88 gnome_canvas_simplerect_class_init (GnomeCanvasSimpleRectClass *class)
90 GObjectClass *gobject_class;
91 GtkObjectClass *object_class;
92 GnomeCanvasItemClass *item_class;
94 gobject_class = (GObjectClass *) class;
95 object_class = (GtkObjectClass *) class;
96 item_class = (GnomeCanvasItemClass *) class;
98 parent_class = g_type_class_peek_parent (class);
100 gobject_class->set_property = gnome_canvas_simplerect_set_property;
101 gobject_class->get_property = gnome_canvas_simplerect_get_property;
103 g_object_class_install_property (gobject_class,
105 g_param_spec_double ("x1",
107 _("x coordinate of upper left corner of rect"),
113 g_object_class_install_property (gobject_class,
115 g_param_spec_double ("y1",
117 _("y coordinate of upper left corner of rect "),
124 g_object_class_install_property (gobject_class,
126 g_param_spec_double ("x2",
128 _("x coordinate of lower right corner of rect"),
134 g_object_class_install_property (gobject_class,
136 g_param_spec_double ("y2",
138 _("y coordinate of lower right corner of rect "),
145 g_object_class_install_property (gobject_class,
147 g_param_spec_uint ("outline_pixels",
149 _("width in pixels of outline"),
156 g_object_class_install_property (gobject_class,
158 g_param_spec_uint ("outline_what",
160 _("which boundaries to outline (mask)"),
168 g_object_class_install_property (gobject_class,
170 g_param_spec_boolean ("fill",
176 g_object_class_install_property (gobject_class,
178 g_param_spec_boolean ("draw",
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"),
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"),
206 object_class->destroy = gnome_canvas_simplerect_destroy;
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;
217 gnome_canvas_simplerect_init (GnomeCanvasSimpleRect *simplerect)
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;
233 gnome_canvas_simplerect_destroy (GtkObject *object)
235 GnomeCanvasSimpleRect *rect;
237 g_return_if_fail (object != NULL);
238 g_return_if_fail (GNOME_IS_CANVAS_SIMPLERECT (object));
240 rect = GNOME_CANVAS_SIMPLERECT (object);
242 /* remember, destroy can be run multiple times! */
244 if (GTK_OBJECT_CLASS (parent_class)->destroy)
245 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
249 gnome_canvas_simplerect_bounds (GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2)
251 GnomeCanvasSimpleRect *simplerect = GNOME_CANVAS_SIMPLERECT (item);
253 *x1 = simplerect->x1;
254 *y1 = simplerect->y1;
255 *x2 = simplerect->x2 + 1;
256 *y2 = simplerect->y2 + 1;
261 gnome_canvas_simplerect_reset_bounds (GnomeCanvasItem *item)
263 GnomeCanvasSimpleRect* simplerect;
264 double x1, x2, y1, y2;
265 double old_x1, old_x2, old_y1, old_y2;
266 ArtDRect unionrect, old, new;
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);
282 /* now compute bounding box in canvas units */
284 simplerect = GNOME_CANVAS_SIMPLERECT (item);
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);
289 /* now queue redraws for changed areas */
291 if (item->x1 == old_x1 && item->x2 == old_x2) {
293 /* no change in x-axis position */
295 if (item->y1 == old_y1) {
296 /* top didn't change, so just draw bottom */
298 double start_y = MIN (item->y2, old_y2);
299 double end_y = MAX (item->y2, old_y2);
301 gnome_canvas_request_redraw (item->canvas, item->x1, start_y - 0.5, item->x2, end_y + 1.5);
304 } else if (item->y2 == old_y2) {
306 /* bottom didn't change, just draw top */
308 double start_y = MIN (item->y1, old_y1);
309 double end_y = MAX (item->y1, old_y1);
311 gnome_canvas_request_redraw (item->canvas, item->x1, start_y - 0.5, item->x2, end_y + 1.5);
316 } else if (item->y1 == old_y1 && item->y2 == old_y2) {
318 /* no change in y-axis position */
320 if (item->x1 == old_x1) {
321 /* start didn't change, so just draw at the end */
323 double start_x = MIN (item->x2, old_x2);
324 double end_x = MAX (item->x2, old_x2);
326 gnome_canvas_request_redraw (item->canvas, start_x - 0.5, item->y1, end_x + 1.5, item->y2);
329 } else if (item->x2 == old_x2) {
331 /* end didn't change, so just draw at the start */
333 double start_x = MIN (item->x1, old_x1);
334 double end_x = MAX (item->x1, old_x1);
336 gnome_canvas_request_redraw (item->canvas, start_x - 0.5, item->y1, end_x + 1.5, item->y2 + 0.5);
352 art_drect_union (&unionrect, &old, &new);
353 gnome_canvas_request_redraw (item->canvas,
365 gnome_canvas_simplerect_set_property (GObject *object,
373 GnomeCanvasSimpleRect *simplerect;
375 int bounds_changed = FALSE;
376 g_return_if_fail (object != NULL);
377 g_return_if_fail (GNOME_IS_CANVAS_SIMPLERECT (object));
379 simplerect = GNOME_CANVAS_SIMPLERECT (object);
383 if (simplerect->x1 != g_value_get_double (value)) {
384 simplerect->x1 = g_value_get_double (value);
385 bounds_changed = TRUE;
390 if (simplerect->y1 != g_value_get_double (value)) {
391 simplerect->y1 = g_value_get_double (value);
392 bounds_changed = TRUE;
397 if (simplerect->x2 != g_value_get_double (value)) {
398 simplerect->x2 = g_value_get_double (value);
399 bounds_changed = TRUE;
404 if (simplerect->y2 != g_value_get_double (value)) {
405 simplerect->y2 = g_value_get_double (value);
406 bounds_changed = TRUE;
411 if (simplerect->draw != g_value_get_boolean (value)) {
412 simplerect->draw = g_value_get_boolean (value);
419 if (simplerect->fill != g_value_get_boolean (value)) {
420 simplerect->fill = g_value_get_boolean (value);
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);
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);
439 case PROP_OUTLINE_PIXELS:
440 if (simplerect->outline_pixels != g_value_get_uint(value)) {
441 simplerect->outline_pixels = g_value_get_uint(value);
446 case PROP_OUTLINE_WHAT:
447 if (simplerect->outline_what != g_value_get_uint(value)) {
448 simplerect->outline_what = g_value_get_uint(value);
457 if (!simplerect->full_draw_on_update) {
458 /* XXX: not sure about this;
460 * I changed the next line to be conditional, rather than always
461 * being executed. Without the condition, the following bug occurs:
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.
472 simplerect->full_draw_on_update = update;
475 if (update || bounds_changed) {
476 gnome_canvas_item_request_update (GNOME_CANVAS_ITEM(object));
481 gnome_canvas_simplerect_get_property (GObject *object,
486 GnomeCanvasSimpleRect *rect = GNOME_CANVAS_SIMPLERECT (object);
488 g_return_if_fail (object != NULL);
489 g_return_if_fail (GNOME_IS_CANVAS_SIMPLERECT (object));
493 g_value_set_double (value, rect->x1);
496 g_value_set_double (value, rect->x2);
499 g_value_set_double (value, rect->y1);
502 g_value_set_double (value, rect->y2);
504 case PROP_OUTLINE_WHAT:
505 g_value_set_uint (value, rect->outline_what);
508 g_value_set_boolean (value, rect->fill);
510 case PROP_OUTLINE_PIXELS:
511 g_value_set_uint (value, rect->outline_pixels);
513 case PROP_FILL_COLOR_RGBA:
514 g_value_set_uint (value, rect->fill_color);
516 case PROP_OUTLINE_COLOR_RGBA:
517 g_value_set_uint (value, rect->outline_color);
520 g_value_set_boolean (value, rect->draw);
524 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
531 gnome_canvas_simplerect_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
533 GnomeCanvasSimpleRect *simplerect;
535 simplerect = GNOME_CANVAS_SIMPLERECT (item);
537 if (parent_class->update)
538 (* parent_class->update) (item, affine, clip_path, flags);
540 gnome_canvas_simplerect_reset_bounds (item);
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;
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);
555 // this can be useful for debugging/understanding how the canvas redraws
558 #undef HARLEQUIN_DEBUGGING
560 #undef SIMPLERECT_FAST_RENDERER
561 #ifdef SIMPLERECT_FAST_RENDERER
564 gnome_canvas_simplerect_render (GnomeCanvasItem *item,
567 GnomeCanvasSimpleRect *simplerect;
571 ArtIRect intersection;
574 simplerect = GNOME_CANVAS_SIMPLERECT (item);
576 if (parent_class->render) {
577 (*parent_class->render) (item, buf);
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);
589 gnome_canvas_buf_ensure_buf (buf);
593 if (!simplerect->draw) {
597 self.x0 = simplerect->bbox_ulx;
598 self.y0 = simplerect->bbox_uly;
599 self.x1 = simplerect->bbox_lrx;
600 self.y1 = simplerect->bbox_lry;
602 art_irect_intersect (&intersection, &self, &buf->rect);
604 begin = MAX(simplerect->bbox_ulx, buf->rect.x0);
605 end = MIN((simplerect->bbox_lrx-1), buf->rect.x1);
607 sy = simplerect->bbox_uly;
608 ey = simplerect->bbox_lry-1;
610 if (simplerect->fill) {
612 // this can be useful for debugging/understanding how the canvas redraws
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);
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);
629 if (simplerect->outline_a > 0) {
630 for (i = 0; i < simplerect->outline_pixels; ++i) {
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);
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);
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);
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);
655 #else /* SIMPLERECT_FAST_RENDERER */
658 gnome_canvas_simplerect_render (GnomeCanvasItem *item,
661 GnomeCanvasSimpleRect *simplerect;
666 simplerect = GNOME_CANVAS_SIMPLERECT (item);
668 if (parent_class->render) {
669 (*parent_class->render) (item, buf);
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);
681 gnome_canvas_buf_ensure_buf (buf);
685 if (!simplerect->draw) {
689 begin = MAX(simplerect->bbox_ulx,buf->rect.x0);
690 end = MIN((simplerect->bbox_lrx-1),buf->rect.x1);
692 sy = simplerect->bbox_uly;
693 ey = simplerect->bbox_lry-1;
695 if (simplerect->fill) {
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);
704 PAINT_BOX(buf, simplerect->fill_r, simplerect->fill_g, simplerect->fill_b, simplerect->fill_a, begin, sy, end, ey);
708 if (simplerect->outline_a) {
709 for (i = 0; i < (int) simplerect->outline_pixels; ++i) {
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);
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);
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);
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);
733 #endif /* SIMPLERECT_FAST_RENDERER */
736 gnome_canvas_simplerect_draw (GnomeCanvasItem *item,
737 GdkDrawable *drawable,
739 int width, int height)
741 GnomeCanvasSimpleRect *simplerect;
748 simplerect = GNOME_CANVAS_SIMPLERECT (item);
750 cr = gdk_cairo_create (drawable);
752 if (x > simplerect->bbox_ulx) {
755 ulx = simplerect->bbox_ulx;
758 if (y > simplerect->bbox_uly) {
761 uly = simplerect->bbox_uly;
764 if (x + width > simplerect->bbox_lrx) {
765 lrx = simplerect->bbox_lrx;
770 if (y + height > simplerect->bbox_lry) {
771 lry = simplerect->bbox_lry;
781 cairo_rectangle (cr, ulx, uly, lrx - ulx, lry - uly);
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);
792 if (simplerect->outline_what && simplerect->outline_pixels) {
794 #define x_in_range(a) (x <= (a) && (a) < x + width)
795 #define y_in_range(a) (y <= (a) && (a) < y + height)
797 cairo_set_line_width (cr, simplerect->outline_pixels);
799 cairo_set_source_rgb (cr,
800 simplerect->outline_r/255.0,
801 simplerect->outline_g/255.0,
802 simplerect->outline_b/255.0);
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);
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);
822 if (simplerect->outline_what & 0x4) {
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);
831 if (simplerect->outline_what & 0x8) {
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);
845 gnome_canvas_simplerect_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item)
850 GnomeCanvasSimpleRect *simplerect;
851 double x1, y1, x2, y2;
854 simplerect = GNOME_CANVAS_SIMPLERECT (item);
858 /* Find the bounds for the rectangle plus its outline width */
860 gnome_canvas_simplerect_bounds (item, &x1, &y1, &x2, &y2);
862 /* Is point inside rectangle */
864 if ((x >= x1) && (y >= y1) && (x <= x2) && (y <= y2)) {
868 /* Point is outside rectangle */
884 return sqrt (dx * dx + dy * dy);