1 #define __SP_CANVAS_ARENA_C__
3 /*
4 * RGBA display list system for inkscape
5 *
6 * Author:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 *
9 * Copyright (C) 2001-2002 Lauris Kaplinski
10 * Copyright (C) 2001 Ximian, Inc.
11 *
12 * Released under GNU GPL, read the file 'COPYING' for more information
13 */
15 #include <libnr/nr-blit.h>
16 #include <gtk/gtksignal.h>
18 #include <display/display-forward.h>
19 #include <display/sp-canvas-util.h>
20 #include <helper/sp-marshal.h>
21 #include <display/nr-arena.h>
22 #include <display/nr-arena-group.h>
23 #include <display/canvas-arena.h>
25 enum {
26 ARENA_EVENT,
27 LAST_SIGNAL
28 };
30 static void sp_canvas_arena_class_init(SPCanvasArenaClass *klass);
31 static void sp_canvas_arena_init(SPCanvasArena *group);
32 static void sp_canvas_arena_destroy(GtkObject *object);
34 static void sp_canvas_arena_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags);
35 static void sp_canvas_arena_render (SPCanvasItem *item, SPCanvasBuf *buf);
36 static double sp_canvas_arena_point (SPCanvasItem *item, NR::Point p, SPCanvasItem **actual_item);
37 static gint sp_canvas_arena_event (SPCanvasItem *item, GdkEvent *event);
39 static gint sp_canvas_arena_send_event (SPCanvasArena *arena, GdkEvent *event);
41 static void sp_canvas_arena_request_update (NRArena *arena, NRArenaItem *item, void *data);
42 static void sp_canvas_arena_request_render (NRArena *arena, NRRectL *area, void *data);
44 NRArenaEventVector carenaev = {
45 {NULL},
46 sp_canvas_arena_request_update,
47 sp_canvas_arena_request_render
48 };
50 static SPCanvasItemClass *parent_class;
51 static guint signals[LAST_SIGNAL] = {0};
53 GtkType
54 sp_canvas_arena_get_type (void)
55 {
56 static GtkType type = 0;
57 if (!type) {
58 GtkTypeInfo info = {
59 "SPCanvasArena",
60 sizeof (SPCanvasArena),
61 sizeof (SPCanvasArenaClass),
62 (GtkClassInitFunc) sp_canvas_arena_class_init,
63 (GtkObjectInitFunc) sp_canvas_arena_init,
64 NULL, NULL, NULL
65 };
66 type = gtk_type_unique (SP_TYPE_CANVAS_ITEM, &info);
67 }
68 return type;
69 }
71 static void
72 sp_canvas_arena_class_init (SPCanvasArenaClass *klass)
73 {
74 GtkObjectClass *object_class;
75 SPCanvasItemClass *item_class;
77 object_class = (GtkObjectClass *) klass;
78 item_class = (SPCanvasItemClass *) klass;
80 parent_class = (SPCanvasItemClass*)gtk_type_class (SP_TYPE_CANVAS_ITEM);
82 signals[ARENA_EVENT] = gtk_signal_new ("arena_event",
83 GTK_RUN_LAST,
84 GTK_CLASS_TYPE(object_class),
85 GTK_SIGNAL_OFFSET (SPCanvasArenaClass, arena_event),
86 sp_marshal_INT__POINTER_POINTER,
87 GTK_TYPE_INT, 2, GTK_TYPE_POINTER, GTK_TYPE_POINTER);
89 object_class->destroy = sp_canvas_arena_destroy;
91 item_class->update = sp_canvas_arena_update;
92 item_class->render = sp_canvas_arena_render;
93 item_class->point = sp_canvas_arena_point;
94 item_class->event = sp_canvas_arena_event;
95 }
97 static void
98 sp_canvas_arena_init (SPCanvasArena *arena)
99 {
100 arena->sticky = FALSE;
102 arena->arena = NRArena::create();
103 arena->root = NRArenaGroup::create(arena->arena);
104 nr_arena_group_set_transparent (NR_ARENA_GROUP (arena->root), TRUE);
106 #ifdef arena_item_tile_cache
107 arena->root->skipCaching=true;
108 #endif
110 arena->active = NULL;
112 nr_active_object_add_listener ((NRActiveObject *) arena->arena, (NRObjectEventVector *) &carenaev, sizeof (carenaev), arena);
113 }
115 static void
116 sp_canvas_arena_destroy (GtkObject *object)
117 {
118 SPCanvasArena *arena = SP_CANVAS_ARENA (object);
120 if (arena->active) {
121 nr_object_unref ((NRObject *) arena->active);
122 arena->active = NULL;
123 }
125 if (arena->root) {
126 nr_arena_item_unref (arena->root);
127 arena->root = NULL;
128 }
130 if (arena->arena) {
131 nr_active_object_remove_listener_by_data ((NRActiveObject *) arena->arena, arena);
133 nr_object_unref ((NRObject *) arena->arena);
134 arena->arena = NULL;
135 }
137 if (GTK_OBJECT_CLASS (parent_class)->destroy)
138 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
139 }
141 static void
142 sp_canvas_arena_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags)
143 {
144 SPCanvasArena *arena = SP_CANVAS_ARENA (item);
146 if (((SPCanvasItemClass *) parent_class)->update)
147 (* ((SPCanvasItemClass *) parent_class)->update) (item, affine, flags);
149 arena->gc.transform = affine;
151 guint reset;
152 reset = (flags & SP_CANVAS_UPDATE_AFFINE)? NR_ARENA_ITEM_STATE_ALL : NR_ARENA_ITEM_STATE_NONE;
154 nr_arena_item_invoke_update (arena->root, NULL, &arena->gc, NR_ARENA_ITEM_STATE_ALL, reset);
156 item->x1 = arena->root->bbox.x0 - 1;
157 item->y1 = arena->root->bbox.y0 - 1;
158 item->x2 = arena->root->bbox.x1 + 1;
159 item->y2 = arena->root->bbox.y1 + 1;
161 if (arena->cursor) {
162 /* Mess with enter/leave notifiers */
163 NRArenaItem *new_arena = nr_arena_item_invoke_pick (arena->root, arena->c, arena->arena->delta, arena->sticky);
164 if (new_arena != arena->active) {
165 GdkEventCrossing ec;
166 ec.window = GTK_WIDGET (item->canvas)->window;
167 ec.send_event = TRUE;
168 ec.subwindow = ec.window;
169 ec.time = GDK_CURRENT_TIME;
170 ec.x = arena->c[NR::X];
171 ec.y = arena->c[NR::Y];
172 /* fixme: */
173 if (arena->active) {
174 ec.type = GDK_LEAVE_NOTIFY;
175 sp_canvas_arena_send_event (arena, (GdkEvent *) &ec);
176 }
177 /* fixme: This is not optimal - better track ::destroy (Lauris) */
178 if (arena->active) nr_object_unref ((NRObject *) arena->active);
179 arena->active = new_arena;
180 if (arena->active) nr_object_ref ((NRObject *) arena->active);
181 if (arena->active) {
182 ec.type = GDK_ENTER_NOTIFY;
183 sp_canvas_arena_send_event (arena, (GdkEvent *) &ec);
184 }
185 }
186 }
187 }
189 #ifdef arena_item_tile_cache
190 extern void age_cache(void);
191 #endif
193 static void
194 sp_canvas_arena_render (SPCanvasItem *item, SPCanvasBuf *buf)
195 {
196 gint bw, bh, sw, sh;
197 gint x, y;
199 SPCanvasArena *arena = SP_CANVAS_ARENA (item);
201 nr_arena_item_invoke_update (arena->root, NULL, &arena->gc,
202 NR_ARENA_ITEM_STATE_BBOX | NR_ARENA_ITEM_STATE_RENDER,
203 NR_ARENA_ITEM_STATE_NONE);
205 sp_canvas_prepare_buffer(buf);
207 #ifdef arena_item_tile_cache
208 age_cache();
209 #endif
210 bw = buf->rect.x1 - buf->rect.x0;
211 bh = buf->rect.y1 - buf->rect.y0;
212 if ((bw < 1) || (bh < 1)) return;
214 if (arena->arena->rendermode != RENDERMODE_OUTLINE) { // use 256K as a compromise to not slow down gradients
215 /* 256K is the cached buffer and we need 4 channels */
216 if (bw * bh < 65536) { // 256K/4
217 /* We can go with single buffer */
218 sw = bw;
219 sh = bh;
220 } else if (bw <= 4096) {
221 /* Go with row buffer */
222 sw = bw;
223 sh = 65536 / bw;
224 } else if (bh <= 4096) {
225 /* Go with column buffer */
226 sw = 65536 / bh;
227 sh = bh;
228 } else {
229 sw = 256;
230 sh = 256;
231 }
232 } else { // paths only, so 1M works faster
233 /* 1M is the cached buffer and we need 4 channels */
234 if (bw * bh < 262144) { // 1M/4
235 /* We can go with single buffer */
236 sw = bw;
237 sh = bh;
238 } else if (bw <= 8192) {
239 /* Go with row buffer */
240 sw = bw;
241 sh = 262144 / bw;
242 } else if (bh <= 8192) {
243 /* Go with column buffer */
244 sw = 262144 / bh;
245 sh = bh;
246 } else {
247 sw = 512;
248 sh = 512;
249 }
250 }
252 /* fixme: RGB transformed bitmap blit is not implemented (Lauris) */
253 /* And even if it would be, unless it uses MMX there is little reason to go RGB */
254 #define STRICT_RGBA
256 for (y = buf->rect.y0; y < buf->rect.y1; y += sh) {
257 for (x = buf->rect.x0; x < buf->rect.x1; x += sw) {
258 NRRectL area;
259 #ifdef STRICT_RGBA
260 NRPixBlock pb;
261 #endif
262 NRPixBlock cb;
264 area.x0 = x;
265 area.y0 = y;
266 area.x1 = MIN (x + sw, buf->rect.x1);
267 area.y1 = MIN (y + sh, buf->rect.y1);
269 #ifdef STRICT_RGBA
270 nr_pixblock_setup_fast (&pb, NR_PIXBLOCK_MODE_R8G8B8A8P, area.x0, area.y0, area.x1, area.y1, TRUE);
271 /* fixme: */
272 pb.empty = FALSE;
273 #endif
275 nr_pixblock_setup_extern (&cb, NR_PIXBLOCK_MODE_R8G8B8, area.x0, area.y0, area.x1, area.y1,
276 buf->buf + (y - buf->rect.y0) * buf->buf_rowstride + 3 * (x - buf->rect.x0),
277 buf->buf_rowstride,
278 FALSE, FALSE);
280 #ifdef STRICT_RGBA
281 pb.visible_area = buf->visible_rect;
282 nr_arena_item_invoke_render (arena->root, &area, &pb, 0);
283 nr_blit_pixblock_pixblock (&cb, &pb);
284 nr_pixblock_release (&pb);
285 #else
286 cb.visible_area = buf->visible_rect;
287 nr_arena_item_invoke_render (arena->root, &area, &cb, 0);
288 #endif
290 nr_pixblock_release (&cb);
291 }
292 }
293 }
295 static double
296 sp_canvas_arena_point (SPCanvasItem *item, NR::Point p, SPCanvasItem **actual_item)
297 {
298 SPCanvasArena *arena = SP_CANVAS_ARENA (item);
300 nr_arena_item_invoke_update (arena->root, NULL, &arena->gc,
301 NR_ARENA_ITEM_STATE_BBOX | NR_ARENA_ITEM_STATE_PICK,
302 NR_ARENA_ITEM_STATE_NONE);
304 NRArenaItem *picked = nr_arena_item_invoke_pick (arena->root, p, arena->arena->delta, arena->sticky);
306 arena->picked = picked;
308 if (picked) {
309 *actual_item = item;
310 return 0.0;
311 }
313 return 1e18;
314 }
316 static gint
317 sp_canvas_arena_event (SPCanvasItem *item, GdkEvent *event)
318 {
319 NRArenaItem *new_arena;
320 /* fixme: This sucks, we have to handle enter/leave notifiers */
322 SPCanvasArena *arena = SP_CANVAS_ARENA (item);
324 gint ret = FALSE;
326 switch (event->type) {
327 case GDK_ENTER_NOTIFY:
328 if (!arena->cursor) {
329 if (arena->active) {
330 //g_warning ("Cursor entered to arena with already active item");
331 nr_object_unref ((NRObject *) arena->active);
332 }
333 arena->cursor = TRUE;
335 /* TODO ... event -> arena transform? */
336 arena->c = NR::Point(event->crossing.x, event->crossing.y);
338 /* fixme: Not sure abut this, but seems the right thing (Lauris) */
339 nr_arena_item_invoke_update (arena->root, NULL, &arena->gc, NR_ARENA_ITEM_STATE_PICK, NR_ARENA_ITEM_STATE_NONE);
340 arena->active = nr_arena_item_invoke_pick (arena->root, arena->c, arena->arena->delta, arena->sticky);
341 if (arena->active) nr_object_ref ((NRObject *) arena->active);
342 ret = sp_canvas_arena_send_event (arena, event);
343 }
344 break;
345 case GDK_LEAVE_NOTIFY:
346 if (arena->cursor) {
347 ret = sp_canvas_arena_send_event (arena, event);
348 if (arena->active) nr_object_unref ((NRObject *) arena->active);
349 arena->active = NULL;
350 arena->cursor = FALSE;
351 }
352 break;
353 case GDK_MOTION_NOTIFY:
354 /* TODO ... event -> arena transform? */
355 arena->c = NR::Point(event->motion.x, event->motion.y);
357 /* fixme: Not sure abut this, but seems the right thing (Lauris) */
358 nr_arena_item_invoke_update (arena->root, NULL, &arena->gc, NR_ARENA_ITEM_STATE_PICK, NR_ARENA_ITEM_STATE_NONE);
359 new_arena = nr_arena_item_invoke_pick (arena->root, arena->c, arena->arena->delta, arena->sticky);
360 if (new_arena != arena->active) {
361 GdkEventCrossing ec;
362 ec.window = event->motion.window;
363 ec.send_event = event->motion.send_event;
364 ec.subwindow = event->motion.window;
365 ec.time = event->motion.time;
366 ec.x = event->motion.x;
367 ec.y = event->motion.y;
368 /* fixme: */
369 if (arena->active) {
370 ec.type = GDK_LEAVE_NOTIFY;
371 ret = sp_canvas_arena_send_event (arena, (GdkEvent *) &ec);
372 }
373 if (arena->active) nr_object_unref ((NRObject *) arena->active);
374 arena->active = new_arena;
375 if (arena->active) nr_object_ref ((NRObject *) arena->active);
376 if (arena->active) {
377 ec.type = GDK_ENTER_NOTIFY;
378 ret = sp_canvas_arena_send_event (arena, (GdkEvent *) &ec);
379 }
380 }
381 ret = sp_canvas_arena_send_event (arena, event);
382 break;
383 default:
384 /* Just send event */
385 ret = sp_canvas_arena_send_event (arena, event);
386 break;
387 }
389 return ret;
390 }
392 static gint
393 sp_canvas_arena_send_event (SPCanvasArena *arena, GdkEvent *event)
394 {
395 gint ret = FALSE;
397 /* Send event to arena */
398 gtk_signal_emit (GTK_OBJECT (arena), signals[ARENA_EVENT], arena->active, event, &ret);
400 return ret;
401 }
403 static void
404 sp_canvas_arena_request_update (NRArena *arena, NRArenaItem *item, void *data)
405 {
406 sp_canvas_item_request_update (SP_CANVAS_ITEM (data));
407 }
409 static void
410 sp_canvas_arena_request_render (NRArena *arena, NRRectL *area, void *data)
411 {
412 sp_canvas_request_redraw (SP_CANVAS_ITEM (data)->canvas, area->x0, area->y0, area->x1, area->y1);
413 }
415 void
416 sp_canvas_arena_set_pick_delta (SPCanvasArena *ca, gdouble delta)
417 {
418 g_return_if_fail (ca != NULL);
419 g_return_if_fail (SP_IS_CANVAS_ARENA (ca));
421 /* fixme: repick? */
422 ca->delta = delta;
423 }
425 void
426 sp_canvas_arena_set_sticky (SPCanvasArena *ca, gboolean sticky)
427 {
428 g_return_if_fail (ca != NULL);
429 g_return_if_fail (SP_IS_CANVAS_ARENA (ca));
431 /* fixme: repick? */
432 ca->sticky = sticky;
433 }
435 void
436 sp_canvas_arena_render_pixblock (SPCanvasArena *ca, NRPixBlock *pb)
437 {
438 NRRectL area;
440 g_return_if_fail (ca != NULL);
441 g_return_if_fail (SP_IS_CANVAS_ARENA (ca));
443 /* fixme: */
444 pb->empty = FALSE;
446 area.x0 = pb->area.x0;
447 area.y0 = pb->area.y0;
448 area.x1 = pb->area.x1;
449 area.y1 = pb->area.y1;
451 nr_arena_item_invoke_render (ca->root, &area, pb, 0);
452 }