322 lines
9.7 KiB
C
322 lines
9.7 KiB
C
#include "evas_common.h"
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#include "evas_private.h"
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void
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evas_object_clip_dirty(Evas_Object *obj)
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{
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Eina_List *l;
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Evas_Object *data;
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if (obj->cur.cache.clip.dirty) return ;
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obj->cur.cache.clip.dirty = 1;
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EINA_LIST_FOREACH(obj->clip.clipees, l, data)
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evas_object_clip_dirty(data);
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}
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void
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evas_object_recalc_clippees(Evas_Object *obj)
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{
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Eina_List *l;
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Evas_Object *data;
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if (obj->cur.cache.clip.dirty)
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{
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evas_object_clip_recalc(obj);
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EINA_LIST_FOREACH(obj->clip.clipees, l, data)
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evas_object_recalc_clippees(data);
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}
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}
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int
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evas_object_clippers_was_visible(Evas_Object *obj)
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{
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if (obj->prev.visible)
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{
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if (obj->prev.clipper)
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return evas_object_clippers_is_visible(obj->prev.clipper);
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return 1;
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}
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return 0;
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}
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/* aaaaargh (pirate voice) ... notes!
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*
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* we have a big problem until now that's gone undetected... until yesterday.
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* that problem involves clips and maps and smart objects. hooray! 3 of the
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* more complex bits of evas - and maps and smart objects being one of the
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* nastiest ones.
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*
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* what is the problem? when a clip crosses a map boundary. that is to say
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* that when the clipper and clippee are not within the child tree of the
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* mapped object. in this case "bad stuff" happens. basically as clips are
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* then used to render objects, but they no longer apply as you'd expect as
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* the map transfomr the objects to-be-clipped separately from the objects
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* that clip them and this whole relationship is broken by maps. it somehow
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* managed to not break with the advent of smart objects. lucky me... but
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* maps killed it. now... what do we do? that is a good question. detect
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* such a broken link and "turn off clipping" in that event - sure. but this
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* isn't going to be cheap as ANY addition or deletion of a map to an object
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* or any change in clipper of an object or any change in smart object
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* membership needs to walk the obj tree both up and down from the changed
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* object and probably walk entire object trees to find these and mark them.
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* thats silly-expensive and i was about to fix it that way but it has since
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* dawned on me that that is just going to kill performance in some critical
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* areas like during object setup and manipulation, as well as teardown.
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*
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* aaaaagh! best for now is to document this as a "don't do it damnit!" thing
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* and have the apps avoid it. but even then - how to do this? this is not
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* easy. everywhere i turn so far i come up to either expensive operations,
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* breaks in logic, or nasty re-work of apps or4 the whole concept of clipping,
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* smart objects and maps... and that will have to wait for evas 2.0
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*
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* the below does clip fixups etc. in the even a clip spans a map boundary.
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* not pretty, but necessary.
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*/
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#define MAP_ACROSS 1
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static void
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evas_object_child_map_across_mark(Evas_Object *obj, Evas_Object *map_obj, Eina_Bool force)
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{
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#ifdef MAP_ACROSS
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if ((obj->cur.map_parent != map_obj) || force)
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{
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obj->cur.map_parent = map_obj;
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obj->cur.cache.clip.dirty = 1;
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evas_object_clip_recalc(obj);
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if (obj->smart.smart)
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{
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Evas_Object *obj2;
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EINA_INLIST_FOREACH(evas_object_smart_members_get_direct(obj), obj2)
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{
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// if obj has its own map - skip it. already done
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if ((obj2->cur.map) && (obj2->cur.usemap)) continue;
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evas_object_child_map_across_mark(obj2, map_obj, force);
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}
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}
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else if (obj->clip.clipees)
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{
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Eina_List *l;
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Evas_Object *obj2;
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EINA_LIST_FOREACH(obj->clip.clipees, l, obj2)
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evas_object_child_map_across_mark(obj2, map_obj, force);
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}
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}
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#endif
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}
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void
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evas_object_clip_across_check(Evas_Object *obj)
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{
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#ifdef MAP_ACROSS
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if (!obj->cur.clipper) return;
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if (obj->cur.clipper->cur.map_parent != obj->cur.map_parent)
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evas_object_child_map_across_mark(obj, obj->cur.map_parent, 1);
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#endif
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}
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void
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evas_object_clip_across_clippees_check(Evas_Object *obj)
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{
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#ifdef MAP_ACROSS
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Eina_List *l;
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Evas_Object *obj2;
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if (!obj->clip.clipees) return;
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// schloooooooooooow:
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// evas_object_child_map_across_mark(obj, obj->cur.map_parent, 1);
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// buggy:
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evas_object_child_map_across_mark(obj, obj->cur.map_parent, 0);
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if (obj->cur.cache.clip.dirty)
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{
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EINA_LIST_FOREACH(obj->clip.clipees, l, obj2)
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evas_object_clip_across_clippees_check(obj2);
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}
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#endif
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}
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// this function is called on an object when map is enabled or disabled on it
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// thus creating a "map boundary" at that point.
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//
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// FIXME: flip2 test broken in elm - might be show/hide of clips
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void
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evas_object_mapped_clip_across_mark(Evas_Object *obj)
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{
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#ifdef MAP_ACROSS
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if ((obj->cur.map) && (obj->cur.usemap))
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evas_object_child_map_across_mark(obj, obj, 0);
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else
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{
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if (obj->smart.parent)
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evas_object_child_map_across_mark
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(obj, obj->smart.parent->cur.map_parent, 0);
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else
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evas_object_child_map_across_mark(obj, NULL, 0);
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}
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#endif
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}
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/* public functions */
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extern const char *o_rect_type;
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EAPI void
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evas_object_clip_set(Evas_Object *obj, Evas_Object *clip)
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{
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MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
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return;
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MAGIC_CHECK_END();
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if (!clip)
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{
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evas_object_clip_unset(obj);
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return;
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}
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MAGIC_CHECK(clip, Evas_Object, MAGIC_OBJ);
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return;
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MAGIC_CHECK_END();
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if (obj->cur.clipper == clip) return;
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if (obj == clip) return;
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if (evas_object_intercept_call_clip_set(obj, clip)) return;
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// illegal to set anything but a rect as a clip
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if (clip->type != o_rect_type)
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{
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ERR("For now a clip on other object than a rectangle is disabled");
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return;
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}
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if (obj->smart.smart)
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{
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if (obj->smart.smart->smart_class->clip_set)
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obj->smart.smart->smart_class->clip_set(obj, clip);
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}
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if (obj->cur.clipper)
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{
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/* unclip */
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obj->cur.clipper->clip.clipees = eina_list_remove(obj->cur.clipper->clip.clipees, obj);
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if (!obj->cur.clipper->clip.clipees)
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{
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obj->cur.clipper->cur.have_clipees = 0;
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if (obj->cur.clipper->cur.visible)
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evas_damage_rectangle_add(obj->cur.clipper->layer->evas,
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obj->cur.clipper->cur.geometry.x,
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obj->cur.clipper->cur.geometry.y,
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obj->cur.clipper->cur.geometry.w,
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obj->cur.clipper->cur.geometry.h);
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}
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evas_object_change(obj->cur.clipper);
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evas_object_change(obj);
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obj->cur.clipper = NULL;
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}
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/* clip me */
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if ((!clip->clip.clipees) && (clip->cur.visible))
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{
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/* Basically it just went invisible */
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clip->changed = 1;
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clip->layer->evas->changed = 1;
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evas_damage_rectangle_add(clip->layer->evas,
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clip->cur.geometry.x, clip->cur.geometry.y,
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clip->cur.geometry.w, clip->cur.geometry.h);
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}
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obj->cur.clipper = clip;
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clip->clip.clipees = eina_list_append(clip->clip.clipees, obj);
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if (clip->clip.clipees) clip->cur.have_clipees = 1;
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/* If it's NOT a rectangle set the mask bits too */
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/* FIXME: Optmz ths chck */
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if (strcmp(evas_object_type_get(clip),"rectangle") == 0)
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obj->cur.mask = NULL;
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else
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{
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void *engdata;
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obj->cur.mask = clip;
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engdata = clip->func->engine_data_get(clip);
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/* FIXME: Images only */
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clip->layer->evas->engine.func->image_mask_create(
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clip->layer->evas->engine.data.output,
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engdata);
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}
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evas_object_change(clip);
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evas_object_change(obj);
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evas_object_clip_dirty(obj);
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evas_object_recalc_clippees(obj);
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if ((!obj->smart.smart) &&
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(!((obj->cur.map) && (obj->cur.usemap))))
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{
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if (evas_object_is_in_output_rect(obj,
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obj->layer->evas->pointer.x,
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obj->layer->evas->pointer.y, 1, 1))
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evas_event_feed_mouse_move(obj->layer->evas,
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obj->layer->evas->pointer.x,
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obj->layer->evas->pointer.y,
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obj->layer->evas->last_timestamp,
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NULL);
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}
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evas_object_clip_across_check(obj);
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}
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EAPI Evas_Object *
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evas_object_clip_get(const Evas_Object *obj)
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{
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MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
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return NULL;
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MAGIC_CHECK_END();
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return obj->cur.clipper;
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}
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EAPI void
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evas_object_clip_unset(Evas_Object *obj)
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{
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MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
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return;
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MAGIC_CHECK_END();
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if (!obj->cur.clipper) return;
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/* unclip */
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if (evas_object_intercept_call_clip_unset(obj)) return;
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if (obj->smart.smart)
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{
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if (obj->smart.smart->smart_class->clip_unset)
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obj->smart.smart->smart_class->clip_unset(obj);
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}
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if (obj->cur.clipper)
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{
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obj->cur.clipper->clip.clipees = eina_list_remove(obj->cur.clipper->clip.clipees, obj);
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if (!obj->cur.clipper->clip.clipees)
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{
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obj->cur.clipper->cur.have_clipees = 0;
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if (obj->cur.clipper->cur.visible)
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evas_damage_rectangle_add(obj->cur.clipper->layer->evas,
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obj->cur.clipper->cur.geometry.x,
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obj->cur.clipper->cur.geometry.y,
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obj->cur.clipper->cur.geometry.w,
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obj->cur.clipper->cur.geometry.h);
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}
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evas_object_change(obj->cur.clipper);
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}
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obj->cur.clipper = NULL;
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evas_object_change(obj);
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evas_object_clip_dirty(obj);
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evas_object_recalc_clippees(obj);
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if ((!obj->smart.smart) &&
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(!((obj->cur.map) && (obj->cur.usemap))))
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{
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if (evas_object_is_in_output_rect(obj,
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obj->layer->evas->pointer.x,
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obj->layer->evas->pointer.y, 1, 1))
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evas_event_feed_mouse_move(obj->layer->evas,
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obj->layer->evas->pointer.x,
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obj->layer->evas->pointer.y,
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obj->layer->evas->last_timestamp,
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NULL);
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}
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evas_object_clip_across_check(obj);
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}
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EAPI const Eina_List *
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evas_object_clipees_get(const Evas_Object *obj)
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{
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MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
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return NULL;
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MAGIC_CHECK_END();
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return obj->clip.clipees;
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}
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