summaryrefslogtreecommitdiff
path: root/src/lib/evas/canvas/efl_canvas_vg.c
blob: e981619dc63e810f053c01af23141b83f5638741 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
#define EVAS_VG_BETA

#include "evas_common_private.h"
#include "evas_private.h"

#include "evas_vg_private.h"

#define MY_CLASS EFL_CANVAS_VG_CLASS

/* private magic number for rectangle objects */
static const char o_type[] = "vectors";

const char *o_vg_type = o_type;


static void _efl_canvas_vg_render(Evas_Object *eo_obj,
                                  Evas_Object_Protected_Data *obj,
                                  void *type_private_data,
                                  void *engine, void *output, void *context, void *surface,
                                  int x, int y, Eina_Bool do_async);
static void _efl_canvas_vg_render_pre(Evas_Object *eo_obj,
                                      Evas_Object_Protected_Data *obj,
                                      void *type_private_data);
static void _efl_canvas_vg_render_post(Evas_Object *eo_obj,
                                       Evas_Object_Protected_Data *obj,
                                       void *type_private_data);
static unsigned int _efl_canvas_vg_id_get(Evas_Object *eo_obj);
static unsigned int _efl_canvas_vg_visual_id_get(Evas_Object *eo_obj);
static void *_efl_canvas_vg_engine_data_get(Evas_Object *eo_obj);
static int _efl_canvas_vg_is_opaque(Evas_Object *eo_obj,
                                    Evas_Object_Protected_Data *obj,
                                    void *type_private_data);
static int _efl_canvas_vg_was_opaque(Evas_Object *eo_obj,
                                     Evas_Object_Protected_Data *obj,
                                     void *type_private_data);

static const Evas_Object_Func object_func =
{
   /* methods (compulsory) */
   NULL,
     _efl_canvas_vg_render,
     _efl_canvas_vg_render_pre,
     _efl_canvas_vg_render_post,
     _efl_canvas_vg_id_get,
     _efl_canvas_vg_visual_id_get,
     _efl_canvas_vg_engine_data_get,
   /* these are optional. NULL = nothing */
     NULL,
     NULL,
     NULL,
     NULL,
     _efl_canvas_vg_is_opaque,
     _efl_canvas_vg_was_opaque,
     NULL,
     NULL,
     NULL,
     NULL,
     NULL,
     NULL,
     NULL, // render_prepare
     NULL
};

static void
_evas_vg_tree_changed(void *data, const Efl_Event *event EINA_UNUSED)
{
   Evas_Object_Protected_Data *obj = data;
   Efl_Canvas_Vg_Data *pd = efl_data_scope_get(obj->object, MY_CLASS);

   if (pd->changed) return;

   pd->changed = EINA_TRUE;

   evas_object_change(obj->object, obj);
}

static void
_update_vgtree_viewport(Eo *obj, Efl_Canvas_Vg_Data *pd)
{
   double vb_w, vb_h, vp_w, vp_h, scale_w, scale_h, scale;
   Eina_Size2D sz = efl_gfx_size_get(obj);
   Eina_Matrix3 m;

   eina_matrix3_identity(&m);

   vb_w = pd->viewbox.w;
   vb_h = pd->viewbox.h;
   vp_w = sz.w;
   vp_h = sz.h;

   scale_w = vp_w / vb_w;
   scale_h = vp_h / vb_h;

   if (pd->fill_mode == EFL_CANVAS_VG_FILL_MODE_STRETCH)
     { // Fill the viewport and ignore the aspect ratio
        eina_matrix3_scale(&m, scale_w, scale_h);
        eina_matrix3_translate(&m, -pd->viewbox.x, -pd->viewbox.y);
     }
   else
     {
        if (pd->fill_mode == EFL_CANVAS_VG_FILL_MODE_MEET)
          scale = scale_w < scale_h ? scale_w : scale_h;
        else // slice
          scale = scale_w > scale_h ? scale_w : scale_h;
        eina_matrix3_translate(&m, (vp_w - vb_w * scale) * pd->align_x, (vp_h - vb_h * scale) * pd->align_y);
        eina_matrix3_scale(&m, scale, scale);
        eina_matrix3_translate(&m, -pd->viewbox.x, -pd->viewbox.y);
     }

   efl_vg_transformation_set(pd->root, &m);
}

static void
_evas_vg_resize(void *data, const Efl_Event *ev)
{
   Efl_Canvas_Vg_Data *pd = data;

   if (eina_rectangle_is_empty(&pd->viewbox.rect))
     return;
   _update_vgtree_viewport(ev->object, pd);
}

/* the actual api call to add a vector graphic object */
EAPI Evas_Object *
evas_object_vg_add(Evas *e)
{
   MAGIC_CHECK(e, Evas, MAGIC_EVAS);
   return NULL;
   MAGIC_CHECK_END();
   // TODO: Ask backend to return the main Ector_Surface
   return efl_add(MY_CLASS, e, efl_canvas_object_legacy_ctor(efl_added));
}

EOLIAN static Efl_VG *
_efl_canvas_vg_root_node_get(Eo *obj EINA_UNUSED, Efl_Canvas_Vg_Data *pd)
{
   Efl_VG *root = NULL;

   if (pd->vg_entry)
     root = evas_cache_vg_tree_get(pd->vg_entry);
   else if (pd->user_entry)
     root = pd->user_entry->root;

   return root;
}

EOLIAN static void
_efl_canvas_vg_root_node_set(Eo *obj, Efl_Canvas_Vg_Data *pd, Efl_VG *root_node)
{
   // if the same root is already set
   if (pd->user_entry && pd->user_entry->root == root_node)
     return;

   // check if a file has been already set
   if (pd->vg_entry)
     {
        evas_cache_vg_entry_del(pd->vg_entry);
        pd->vg_entry = NULL;
     }

   // detach/free the old root_node
   if (pd->user_entry && pd->user_entry->root)
     efl_parent_set(pd->user_entry->root, NULL);

   if (root_node)
     {
        pd->user_entry = calloc(1, sizeof(User_Vg_Entry));
        pd->user_entry->root = root_node;
        // set the parent so that vg canvas can render it.
        efl_parent_set(pd->user_entry->root, pd->root);
     }
   else
     {
        if (pd->user_entry)
          {
             // drop any surface cache attached to it.
             Evas_Object_Protected_Data *eobj = efl_data_scope_get(obj, EFL_CANVAS_OBJECT_CLASS);
             eobj->layer->evas->engine.func->ector_surface_cache_drop(_evas_engine_context(eobj->layer->evas), pd->user_entry);
             free(pd->user_entry);
          }
        pd->user_entry = NULL;
     }

   // force a redraw
   pd->changed = EINA_TRUE;

   evas_object_change(obj, efl_data_scope_get(obj, EFL_CANVAS_OBJECT_CLASS));
}

EOLIAN static void
_efl_canvas_vg_fill_mode_set(Eo *obj EINA_UNUSED, Efl_Canvas_Vg_Data *pd, Efl_Canvas_Vg_Fill_Mode fill_mode)
{
   pd->fill_mode = fill_mode;
}

EOLIAN static Efl_Canvas_Vg_Fill_Mode
_efl_canvas_vg_fill_mode_get(Eo *obj EINA_UNUSED, Efl_Canvas_Vg_Data *pd)
{
   return pd->fill_mode;
}

EOLIAN static void
_efl_canvas_vg_viewbox_set(Eo *obj, Efl_Canvas_Vg_Data *pd, Eina_Rect viewbox)
{
   // viewbox should be a valid rectangle
   if (eina_rectangle_is_empty(&viewbox.rect))
     {
        // reset the old viewbox if any
        if (!eina_rectangle_is_empty(&pd->viewbox.rect))
          {
             Eina_Matrix3 m;

             pd->viewbox = EINA_RECT_EMPTY();
             eina_matrix3_identity(&m);
             efl_vg_transformation_set(pd->root, &m);
             // un register the resize callback
             efl_event_callback_del(obj, EFL_GFX_EVENT_RESIZE, _evas_vg_resize, pd);
          }
        return;
     }
   // register for resize callback if not done yet
   if (eina_rectangle_is_empty(&pd->viewbox.rect))
     efl_event_callback_add(obj, EFL_GFX_EVENT_RESIZE, _evas_vg_resize, pd);

   pd->viewbox = viewbox;
   _update_vgtree_viewport(obj, pd);
}

EOLIAN static Eina_Rect
_efl_canvas_vg_viewbox_get(Eo *obj EINA_UNUSED, Efl_Canvas_Vg_Data *pd)
{
   return pd->viewbox;
}

EOLIAN static void
_efl_canvas_vg_viewbox_align_set(Eo *obj EINA_UNUSED, Efl_Canvas_Vg_Data *pd, double align_x, double align_y)
{
   align_x = align_x < 0 ? 0 : align_x;
   align_x = align_x > 1 ? 1 : align_x;

   align_y = align_y < 0 ? 0 : align_y;
   align_y = align_y > 1 ? 1 : align_y;

   pd->align_x = align_x;
   pd->align_y = align_y;
}

EOLIAN static void
_efl_canvas_vg_viewbox_align_get(Eo *obj EINA_UNUSED, Efl_Canvas_Vg_Data *pd, double *align_x, double *align_y)
{
   if (align_x) *align_x = pd->align_x;
   if (align_y) *align_y = pd->align_y;
}

// file set and save api implementation

EOLIAN static Eina_Bool
_efl_canvas_vg_efl_file_file_set(Eo *obj, Efl_Canvas_Vg_Data *pd, const char *file, const char *key)
{
   Evas_Cache_Vg_Entry *old_entry;
   int w, h;

   if (!file) return EINA_FALSE;

   old_entry = pd->vg_entry;
   evas_object_geometry_get(obj, NULL, NULL, &w, &h);
   pd->vg_entry = evas_cache_vg_entry_find(file, key, w, h);
   if (pd->vg_entry != old_entry)
     evas_object_change(obj, efl_data_scope_get(obj, EFL_CANVAS_OBJECT_CLASS));
   evas_cache_vg_entry_del(old_entry);

   return EINA_TRUE;
}

EOLIAN static void
_efl_canvas_vg_efl_file_file_get(Eo *obj EINA_UNUSED, Efl_Canvas_Vg_Data *pd, const char **file, const char **key)
{
   if (pd->vg_entry)
     {
        if (file) *file = pd->vg_entry->file;
        if (key)  *key = pd->vg_entry->key;
     }
}

EOLIAN static Eina_Bool
_efl_canvas_vg_efl_file_save(const Eo *obj, Efl_Canvas_Vg_Data *pd, const char *file, const char *key, const char *flags)
{
   Vg_File_Data tmp = {};
   Vg_File_Data *info = &tmp;

   if (pd->vg_entry && pd->vg_entry->file)
     {
        info = evas_cache_vg_file_info(pd->vg_entry->file, pd->vg_entry->key);
     }
   else
     {
        info->view_box.x = 0;
        info->view_box.y = 0;
        evas_object_geometry_get(obj, NULL, NULL, &info->view_box.w, &info->view_box.h);
        info->root = pd->root;
        info->preserve_aspect = EINA_FALSE;
     }
   return evas_vg_save_to_file(info, file, key, flags);
}

static void
_cleanup_reference(void *data, const Efl_Event *event EINA_UNUSED)
{
   Efl_Canvas_Vg_Data *pd = data;
   Eo *renderer;

   /* unref all renderer and may also destroy them async */
   while ((renderer = eina_array_pop(&pd->cleanup)))
     efl_unref(renderer);
}

EOLIAN static void
_efl_canvas_vg_efl_object_destructor(Eo *eo_obj, Efl_Canvas_Vg_Data *pd)
{
   Evas *e = evas_object_evas_get(eo_obj);

   efl_event_callback_del(e, EFL_CANVAS_EVENT_RENDER_POST, _cleanup_reference, pd);

   efl_del(pd->root);
   pd->root = NULL;
   efl_destructor(efl_super(eo_obj, MY_CLASS));
}

EOLIAN static Eo *
_efl_canvas_vg_efl_object_constructor(Eo *eo_obj, Efl_Canvas_Vg_Data *pd)
{
   Evas_Object_Protected_Data *obj = efl_data_scope_get(eo_obj, EFL_CANVAS_OBJECT_CLASS);

   eo_obj = efl_constructor(efl_super(eo_obj, MY_CLASS));

   /* set up methods (compulsory) */
   obj->func = &object_func;
   obj->private_data = efl_data_ref(eo_obj, MY_CLASS);
   obj->type = o_type;

   /* root node */
   pd->root = efl_add(EFL_VG_CONTAINER_CLASS, NULL);

   eina_array_step_set(&pd->cleanup, sizeof(pd->cleanup), 8);

   efl_event_callback_add(pd->root, EFL_GFX_PATH_EVENT_CHANGED, _evas_vg_tree_changed, obj);

   return eo_obj;
}

static Efl_Object *
_efl_canvas_vg_efl_object_finalize(Eo *obj, Efl_Canvas_Vg_Data *pd)
{
   Evas *e = evas_object_evas_get(obj);

   // TODO: If we start to have to many Evas_Object_VG per canvas, it may be nice
   // to actually have one event per canvas and one array per canvas to.
   efl_event_callback_add(e, EFL_CANVAS_EVENT_RENDER_POST, _cleanup_reference, pd);

   return obj;
}

static void
_evas_vg_render(Evas_Object_Protected_Data *obj, Efl_Canvas_Vg_Data *vd,
                void *engine, void *output, void *context, void *surface, Efl_VG *n,
                Eina_Array *clips, Eina_Bool do_async)
{
   if (efl_isa(n, EFL_VG_CONTAINER_CLASS))
     {
        Efl_VG_Container_Data *vc;
        Efl_VG *child;
        Eina_List *l;

        vc = efl_data_scope_get(n, EFL_VG_CONTAINER_CLASS);

        EINA_LIST_FOREACH(vc->children, l, child)
          _evas_vg_render(obj, vd,
                          engine, output, context, surface, child,
                          clips, do_async);
     }
   else
     {
        Efl_VG_Data *nd;

        nd = efl_data_scope_get(n, EFL_VG_CLASS);

        obj->layer->evas->engine.func->ector_renderer_draw(engine, output, context, surface, nd->renderer, clips, do_async);

        if (do_async)
          eina_array_push(&vd->cleanup, efl_ref(nd->renderer));
     }
}

// renders a vg_tree to an offscreen buffer
// and push it to the cache.
static void *
_render_to_buffer(Evas_Object_Protected_Data *obj, Efl_Canvas_Vg_Data *vd,
                  void *engine, void *surface,
                  Efl_VG *root, int w, int h, void *key,
                  void *buffer, Eina_Bool do_async)
{
   Ector_Surface *ector;
   RGBA_Draw_Context *context;
   int error = 0;
   Eina_Bool buffer_created = EINA_FALSE;

   ector = evas_ector_get(obj->layer->evas);
   if (!ector) return NULL;

   if (!buffer)
     {
        // 2. create a buffer
        buffer = obj->layer->evas->engine.func->ector_surface_create(engine,
                                                                     w, h,
                                                                     &error);
        if (error)
          return NULL; // surface creation error
        buffer_created = EINA_TRUE;
     }


   //1. render pre
   _evas_vg_render_pre(root, ector, NULL);

   //3. draw into the buffer
   context = evas_common_draw_context_new();
   evas_common_draw_context_set_render_op(context, _EVAS_RENDER_COPY);
   evas_common_draw_context_set_color(context, 255, 255, 255, 255);
   obj->layer->evas->engine.func->ector_begin(engine, buffer,
                                              context, surface,
                                              ector,
                                              0, 0,
                                              do_async);
   _evas_vg_render(obj, vd,
                   engine, buffer,
                   context, surface,
                   root, NULL,
                   do_async);
   obj->layer->evas->engine.func->image_dirty_region(engine, buffer, 0, 0, 0, 0);
   obj->layer->evas->engine.func->ector_end(engine, buffer,
                                            context, surface,
                                            ector,do_async);

   evas_common_draw_context_free(context);

   if (buffer_created)
     obj->layer->evas->engine.func->ector_surface_cache_set(engine, key, buffer);

   return buffer;
}

static void
_render_buffer_to_screen(Evas_Object_Protected_Data *obj,
                         void *engine, void *output, void *context, void *surface,
                         void *buffer,
                         int x, int y, int w, int h,
                         Eina_Bool do_async)
{
   Eina_Bool async_unref;

   // draw the buffer as image to canvas
   async_unref = obj->layer->evas->engine.func->image_draw(engine, output, context, surface,
                                                           buffer,
                                                           0, 0, w, h,
                                                           x, y, w, h,
                                                           EINA_TRUE, do_async);
   if (do_async && async_unref)
     {
        evas_cache_image_ref((Image_Entry *)buffer);
        evas_unref_queue_image_put(obj->layer->evas, buffer);
     }
}

static void
_cache_vg_entry_render(Evas_Object_Protected_Data *obj,
                       Efl_Canvas_Vg_Data *vd,
                       void *engine, void *output, void *context, void *surface,
                       int x, int y, int w, int h, Eina_Bool do_async)
{
   Evas_Cache_Vg_Entry *vg_entry = vd->vg_entry;
   Efl_VG *root, *dupe_root;
   void *buffer;

   // if the size changed in between path set and the draw call;
   if ((vg_entry->w != w) ||
       (vg_entry->h != h))
     {
         evas_cache_vg_entry_del(vg_entry);
         vg_entry = evas_cache_vg_entry_find(vg_entry->file, vg_entry->key,
                                             w, h);
         vd->vg_entry = vg_entry;
     }
   // if the buffer is not created yet
   root = evas_cache_vg_tree_get(vg_entry);
   if (!root) return;
   buffer = obj->layer->evas->engine.func->ector_surface_cache_get(engine, root);
   if (!buffer)
     {
        dupe_root = efl_duplicate(root);
        // render to the buffer
        buffer = _render_to_buffer(obj, vd,
                                   engine, surface,
                                   dupe_root,
                                   w, h,
                                   root,
                                   buffer,
                                   do_async);
        efl_del(dupe_root);
     }
   else
     {
        obj->layer->evas->engine.func->ector_surface_cache_drop(engine, root);
     }

   _render_buffer_to_screen(obj,
                            engine, output, context, surface,
                            buffer,
                            x, y, w, h,
                            do_async);
}

static void
_user_vg_entry_render(Evas_Object_Protected_Data *obj,
                      Efl_Canvas_Vg_Data *vd,
                      void *engine, void *output, void *context, void *surface,
                      int x, int y, int w, int h, Eina_Bool do_async)
{
   User_Vg_Entry *user_entry = vd->user_entry;
   void *buffer;

   // if the size dosen't match
   if ((user_entry->w != w ) ||
       (user_entry->h != h))
     {
         obj->layer->evas->engine.func->ector_surface_cache_drop(engine, user_entry);
         user_entry->w = w;
         user_entry->h = h;
         vd->user_entry = user_entry;
     }
   // if the buffer is not created yet
   buffer = obj->layer->evas->engine.func->ector_surface_cache_get(engine, user_entry);
   if (!buffer)
     {
        // render to the buffer
        buffer = _render_to_buffer(obj, vd,
                                   engine, surface,
                                   user_entry->root,
                                   w, h,
                                   user_entry,
                                   buffer,
                                   do_async);
     }
   else
     {
        // render to the buffer
        if (vd->changed)
          buffer = _render_to_buffer(obj, vd,
                                     engine, surface,
                                     user_entry->root,
                                     w, h,
                                     user_entry,
                                     buffer,
                                     do_async);
        obj->layer->evas->engine.func->ector_surface_cache_drop(engine, user_entry);
     }

   _render_buffer_to_screen(obj,
                            engine, output, context, surface,
                            buffer,
                            x, y, w, h,
                            do_async);
}

static void
_efl_canvas_vg_render(Evas_Object *eo_obj EINA_UNUSED,
                      Evas_Object_Protected_Data *obj,
                      void *type_private_data,
                      void *engine, void *output, void *context, void *surface,
                      int x, int y, Eina_Bool do_async)
{
   Efl_Canvas_Vg_Data *vd = type_private_data;

   /* render object to surface with context, and offxet by x,y */
   obj->layer->evas->engine.func->context_color_set(engine,
                                                    context,
                                                    255,
                                                    255,
                                                    255,
                                                    255);
   obj->layer->evas->engine.func->context_multiplier_set(engine,
                                                         context,
                                                         obj->cur->cache.clip.r,
                                                         obj->cur->cache.clip.g,
                                                         obj->cur->cache.clip.b,
                                                         obj->cur->cache.clip.a);
   obj->layer->evas->engine.func->context_anti_alias_set(engine, context,
                                                         obj->cur->anti_alias);
   obj->layer->evas->engine.func->context_render_op_set(engine, context,
                                                        obj->cur->render_op);
   if (vd->vg_entry)
     {
        _cache_vg_entry_render(obj, vd,
                               engine, output, context, surface,
                               obj->cur->geometry.x + x, obj->cur->geometry.y + y,
                               obj->cur->geometry.w, obj->cur->geometry.h, do_async);
     }
   if (vd->user_entry)
     {
        _user_vg_entry_render(obj, vd,
                              engine, output, context, surface,
                              obj->cur->geometry.x + x, obj->cur->geometry.y + y,
                              obj->cur->geometry.w, obj->cur->geometry.h, do_async);
     }
   vd->changed = EINA_FALSE;
}

static void
_efl_canvas_vg_render_pre(Evas_Object *eo_obj,
                          Evas_Object_Protected_Data *obj,
                          void *type_private_data)
{
   Efl_Canvas_Vg_Data *vd = type_private_data;
   int is_v, was_v;
   Ector_Surface *s;

   /* dont pre-render the obj twice! */
   if (obj->pre_render_done) return;
   obj->pre_render_done = EINA_TRUE;

   /* pre-render phase. this does anything an object needs to do just before */
   /* rendering. this could mean loading the image data, retrieving it from */
   /* elsewhere, decoding video etc. */
   /* then when this is done the object needs to figure if it changed and */
   /* if so what and where and add the appropriate redraw rectangles */
   /* if someone is clipping this obj - go calculate the clipper */
   if (obj->cur->clipper)
     {
        if (obj->cur->cache.clip.dirty)
          evas_object_clip_recalc(obj->cur->clipper);
        obj->cur->clipper->func->render_pre(obj->cur->clipper->object,
                                            obj->cur->clipper,
                                            obj->cur->clipper->private_data);
     }

   // FIXME: handle damage only on changed renderer.
   s = evas_ector_get(obj->layer->evas);
   if (vd->root && s)
     _evas_vg_render_pre(vd->root, s, NULL);

   /* now figure what changed and add draw rects */
   /* if it just became visible or invisible */
   is_v = evas_object_is_visible(eo_obj, obj);
   was_v = evas_object_was_visible(eo_obj,obj);
   if (!(is_v | was_v)) goto done;

   if (vd->changed)
     {
        evas_object_render_pre_prev_cur_add(&obj->layer->evas->clip_changes, eo_obj, obj);
        goto done;
     }

   if (is_v != was_v)
     {
        evas_object_render_pre_visible_change(&obj->layer->evas->clip_changes, eo_obj, is_v, was_v);
        goto done;
     }
   if (obj->changed_map || obj->changed_src_visible)
     {
        evas_object_render_pre_prev_cur_add(&obj->layer->evas->clip_changes, eo_obj, obj);
        goto done;
     }
   /* it's not visible - we accounted for it appearing or not so just abort */
   if (!is_v) goto done;
   /* clipper changed this is in addition to anything else for obj */
   evas_object_render_pre_clipper_change(&obj->layer->evas->clip_changes, eo_obj);
   /* if we restacked (layer or just within a layer) and don't clip anyone */
   if ((obj->restack) && (!obj->clip.clipees))
     {
        evas_object_render_pre_prev_cur_add(&obj->layer->evas->clip_changes, eo_obj, obj);
        goto done;
     }
   /* if it changed render op */
   if (obj->cur->render_op != obj->prev->render_op)
     {
        evas_object_render_pre_prev_cur_add(&obj->layer->evas->clip_changes, eo_obj, obj);
        goto done;
     }
   /* if it changed color */
   if ((obj->cur->color.r != obj->prev->color.r) ||
       (obj->cur->color.g != obj->prev->color.g) ||
       (obj->cur->color.b != obj->prev->color.b) ||
       (obj->cur->color.a != obj->prev->color.a))
     {
        evas_object_render_pre_prev_cur_add(&obj->layer->evas->clip_changes, eo_obj, obj);
        goto done;
     }
   /* if it changed geometry - and obviously not visibility or color */
   /* calculate differences since we have a constant color fill */
   /* we really only need to update the differences */
   if ((obj->cur->geometry.x != obj->prev->geometry.x) ||
       (obj->cur->geometry.y != obj->prev->geometry.y) ||
       (obj->cur->geometry.w != obj->prev->geometry.w) ||
       (obj->cur->geometry.h != obj->prev->geometry.h))
     {
        evas_object_render_pre_prev_cur_add(&obj->layer->evas->clip_changes, eo_obj, obj);
        goto done;
     }
   /* it obviously didn't change - add a NO obscure - this "unupdates"  this */
   /* area so if there were updates for it they get wiped. don't do it if we */
   /* arent fully opaque and we are visible */
   if (evas_object_is_visible(eo_obj, obj) &&
       evas_object_is_opaque(eo_obj, obj) &&
       (!obj->clip.clipees))
     {
        Evas_Coord x, y, w, h;

        x = obj->cur->cache.clip.x;
        y = obj->cur->cache.clip.y;
        w = obj->cur->cache.clip.w;
        h = obj->cur->cache.clip.h;
        if (obj->cur->clipper)
          {
             RECTS_CLIP_TO_RECT(x, y, w, h,
                                obj->cur->clipper->cur->cache.clip.x,
                                obj->cur->clipper->cur->cache.clip.y,
                                obj->cur->clipper->cur->cache.clip.w,
                                obj->cur->clipper->cur->cache.clip.h);
          }
        evas_render_update_del(obj->layer->evas,
                               x + obj->layer->evas->framespace.x,
                               y + obj->layer->evas->framespace.y,
                               w, h);
     }
   done:
   evas_object_render_pre_effect_updates(&obj->layer->evas->clip_changes, eo_obj, is_v, was_v);
}

static void
_efl_canvas_vg_render_post(Evas_Object *eo_obj EINA_UNUSED,
                           Evas_Object_Protected_Data *obj,
                           void *type_private_data EINA_UNUSED)
{
   /* this moves the current data to the previous state parts of the object */
   /* in whatever way is safest for the object. also if we don't need object */
   /* data anymore we can free it if the object deems this is a good idea */
   /* remove those pesky changes */
   evas_object_clip_changes_clean(obj);
   /* move cur to prev safely for object data */
   evas_object_cur_prev(obj);
}

static unsigned int
_efl_canvas_vg_id_get(Evas_Object *eo_obj)
{
   Efl_Canvas_Vg_Data *o = efl_data_scope_get(eo_obj, MY_CLASS);
   if (!o) return 0;
   return MAGIC_OBJ_VG;
}

static unsigned int
_efl_canvas_vg_visual_id_get(Evas_Object *eo_obj)
{
   Efl_Canvas_Vg_Data *o = efl_data_scope_get(eo_obj, MY_CLASS);
   if (!o) return 0;
   return MAGIC_OBJ_SHAPE;
}

static void *
_efl_canvas_vg_engine_data_get(Evas_Object *eo_obj)
{
   Efl_Canvas_Vg_Data *o = efl_data_scope_get(eo_obj, MY_CLASS);
   return o->engine_data;
}

static int
_efl_canvas_vg_is_opaque(Evas_Object *eo_obj EINA_UNUSED,
                         Evas_Object_Protected_Data *obj EINA_UNUSED,
                         void *type_private_data EINA_UNUSED)
{
   return 0;
}

static int
_efl_canvas_vg_was_opaque(Evas_Object *eo_obj EINA_UNUSED,
                          Evas_Object_Protected_Data *obj EINA_UNUSED,
                          void *type_private_data EINA_UNUSED)
{
   return 0;
}

#include "efl_canvas_vg.eo.c"