kimcinoo
/
efl
forked from enlightenment/efl
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
efl/src/lib/evas/canvas/evas_clip.c

594 lines
20 KiB
C
Raw Blame History

#include "evas_common_private.h"
#include "evas_private.h"
static void _clip_unset(Eo *eo_obj, Evas_Object_Protected_Data *obj);
void
evas_object_clip_dirty(Evas_Object *eo_obj EINA_UNUSED, Evas_Object_Protected_Data *obj)
{
Evas_Object_Protected_Data *clipee;
Eina_List *l;
if (obj->cur->cache.clip.dirty) return;
EINA_COW_STATE_WRITE_BEGIN(obj, state_write, cur)
{
state_write->cache.clip.dirty = EINA_TRUE;
}
EINA_COW_STATE_WRITE_END(obj, state_write, cur);
EINA_LIST_FOREACH(obj->clip.clipees, l, clipee)
{
evas_object_clip_dirty(clipee->object, clipee);
}
}
void
evas_object_recalc_clippees(Evas_Object_Protected_Data *obj)
{
Evas_Object_Protected_Data *clipee;
Eina_List *l;
EVAS_OBJECT_DATA_VALID_CHECK(obj);
if (obj->cur->cache.clip.dirty)
{
evas_object_clip_recalc(obj);
EINA_LIST_FOREACH(obj->clip.clipees, l, clipee)
{
evas_object_recalc_clippees(clipee);
}
}
}
/* aaaaargh (pirate voice) ... notes!
*
* we have a big problem until now that's gone undetected... until yesterday.
* that problem involves clips and maps and smart objects. hooray! 3 of the
* more complex bits of evas - and maps and smart objects being one of the
* nastiest ones.
*
* what is the problem? when a clip crosses a map boundary. that is to say
* that when the clipper and clippee are not within the child tree of the
* mapped object. in this case "bad stuff" happens. basically as clips are
* then used to render objects, but they no longer apply as you'd expect as
* the map transfomr the objects to-be-clipped separately from the objects
* that clip them and this whole relationship is broken by maps. it somehow
* managed to not break with the advent of smart objects. lucky me... but
* maps killed it. now... what do we do? that is a good question. detect
* such a broken link and "turn off clipping" in that event - sure. but this
* isn't going to be cheap as ANY addition or deletion of a map to an object
* or any change in clipper of an object or any change in smart object
* membership needs to walk the obj tree both up and down from the changed
* object and probably walk entire object trees to find these and mark them.
* thats silly-expensive and i was about to fix it that way but it has since
* dawned on me that that is just going to kill performance in some critical
* areas like during object setup and manipulation, as well as teardown.
*
* aaaaagh! best for now is to document this as a "don't do it damnit!" thing
* and have the apps avoid it. but even then - how to do this? this is not
* easy. everywhere i turn so far i come up to either expensive operations,
* breaks in logic, or nasty re-work of apps or4 the whole concept of clipping,
* smart objects and maps... and that will have to wait for evas 2.0
*
* the below does clip fixups etc. in the even a clip spans a map boundary.
* not pretty, but necessary.
*/
#define MAP_ACROSS 1
static void
evas_object_child_map_across_mark(Evas_Object *eo_obj, Evas_Object_Protected_Data *obj, Evas_Object *map_obj, Eina_Bool force, Eina_Hash *visited)
{
#ifdef MAP_ACROSS
Eina_Bool clear_visited = EINA_FALSE;
if (!visited)
{
visited = eina_hash_pointer_new(NULL);
clear_visited = EINA_TRUE;
}
if (eina_hash_find(visited, &eo_obj) == (void *)1) goto end;
else eina_hash_add(visited, &eo_obj, (void *)1);
if ((obj->map->cur.map_parent != map_obj) || force)
{
EINA_COW_WRITE_BEGIN(evas_object_map_cow, obj->map, Evas_Object_Map_Data, map_write)
map_write->cur.map_parent = map_obj;
EINA_COW_WRITE_END(evas_object_map_cow, obj->map, map_write);
EINA_COW_STATE_WRITE_BEGIN(obj, state_write, cur)
{
state_write->cache.clip.dirty = 1;
}
EINA_COW_STATE_WRITE_END(obj, state_write, cur);
evas_object_clip_recalc(obj);
if (obj->is_smart)
{
Evas_Object_Protected_Data *obj2;
EINA_INLIST_FOREACH(evas_object_smart_members_get_direct(eo_obj), obj2)
{
// if obj has its own map - skip it. already done
if ((obj2->map->cur.map) && (obj2->map->cur.usemap)) continue;
Evas_Object *eo_obj2 = obj2->object;
evas_object_child_map_across_mark(eo_obj2, obj2, map_obj,
force, visited);
}
}
else if (obj->clip.clipees)
{
Evas_Object_Protected_Data *obj2;
Eina_List *l;
EINA_LIST_FOREACH(obj->clip.clipees, l, obj2)
{
evas_object_child_map_across_mark(obj2->object, obj2,
map_obj, force, visited);
}
}
}
end:
if (clear_visited) eina_hash_free(visited);
#endif
}
void
evas_object_clip_across_check(Evas_Object *eo_obj, Evas_Object_Protected_Data *obj)
{
#ifdef MAP_ACROSS
if (!obj->cur->clipper) return;
if (obj->cur->clipper->map->cur.map_parent != obj->map->cur.map_parent)
evas_object_child_map_across_mark(eo_obj, obj, obj->map->cur.map_parent,
1, NULL);
#endif
}
void
evas_object_clip_across_clippees_check(Evas_Object *eo_obj, Evas_Object_Protected_Data *obj)
{
#ifdef MAP_ACROSS
Evas_Object_Protected_Data *obj2;
Eina_List *l;
if (!obj->clip.clipees) return;
// schloooooooooooow:
// evas_object_child_map_across_mark(eo_obj, obj->map->cur.map_parent, 1, NULL);
// buggy:
evas_object_child_map_across_mark(eo_obj, obj, obj->map->cur.map_parent, 0,
NULL);
if (obj->cur->cache.clip.dirty)
{
EINA_LIST_FOREACH(obj->clip.clipees, l, obj2)
{
evas_object_clip_across_clippees_check(obj2->object, obj2);
}
}
#endif
}
// this function is called on an object when map is enabled or disabled on it
// thus creating a "map boundary" at that point.
//
// FIXME: flip2 test broken in elm - might be show/hide of clips
void
evas_object_mapped_clip_across_mark(Evas_Object *eo_obj, Evas_Object_Protected_Data *obj)
{
#ifdef MAP_ACROSS
if ((obj->map->cur.map) && (obj->map->cur.usemap))
evas_object_child_map_across_mark(eo_obj, obj, eo_obj, 0, NULL);
else
{
if (obj->smart.parent)
{
Evas_Object_Protected_Data *smart_parent_obj =
efl_data_scope_get(obj->smart.parent, EFL_CANVAS_OBJECT_CLASS);
evas_object_child_map_across_mark
(eo_obj, obj, smart_parent_obj->map->cur.map_parent, 0, NULL);
}
else
evas_object_child_map_across_mark(eo_obj, obj, NULL, 0, NULL);
}
#endif
}
static void
_efl_canvas_object_clip_mask_unset(Evas_Object_Protected_Data *obj)
{
EVAS_OBJECT_DATA_VALID_CHECK(obj);
if (!obj->mask->is_mask) return;
if (obj->clip.clipees) return;
/* this frees the clip surface. is this correct? */
EINA_COW_WRITE_BEGIN(evas_object_mask_cow, obj->mask, Evas_Object_Mask_Data, mask)
mask->is_mask = EINA_FALSE;
mask->redraw = EINA_FALSE;
mask->is_alpha = EINA_FALSE;
if (mask->surface)
{
obj->layer->evas->engine.func->image_free(obj->layer->evas->engine.data.output, mask->surface);
mask->surface = NULL;
}
mask->w = 0;
mask->h = 0;
EINA_COW_WRITE_END(evas_object_mask_cow, obj->mask, mask);
}
/* public functions */
extern const char *o_rect_type;
extern const char *o_image_type;
static void _clipper_del_cb(void *data, const Efl_Event *event);
Eina_Bool
_efl_canvas_object_clip_set_block(Eo *eo_obj, Evas_Object_Protected_Data *obj,
Evas_Object *eo_clip, Evas_Object_Protected_Data *clip)
{
if (!obj) obj = efl_data_scope_get(eo_obj, EFL_CANVAS_OBJECT_CLASS);
if (!clip) clip = efl_data_scope_get(eo_clip, EFL_CANVAS_OBJECT_CLASS);
evas_object_async_block(obj);
if (obj->cur->clipper && (obj->cur->clipper->object == eo_clip)) return EINA_TRUE;
if (eo_obj == eo_clip) goto err_same;
if (clip->delete_me) goto err_clip_deleted;
if (obj->delete_me) goto err_obj_deleted;
if (!obj->layer || !clip->layer) goto err_no_layer;
if (obj->layer->evas != clip->layer->evas) goto err_diff_evas;
if ((clip->type != o_rect_type) && (clip->type != o_image_type)) goto err_type;
return EINA_FALSE;
err_same:
CRI("Setting clip %p on itself", eo_obj);
return EINA_TRUE;
err_clip_deleted:
CRI("Setting deleted object %p as clip obj %p", eo_clip, eo_obj);
return EINA_TRUE;
err_obj_deleted:
CRI("Setting object %p as clip to deleted obj %p", eo_clip, eo_obj);
return EINA_TRUE;
err_no_layer:
CRI("Object %p or clip %p layer is not set !", obj, clip);;
return EINA_TRUE;
err_diff_evas:
CRI("Setting object %p from Evas (%p) to another Evas (%p)",
obj, obj->layer->evas, clip->layer->evas);
return EINA_TRUE;
err_type:
CRI("A clipper can only be an evas rectangle or image (got %s)",
efl_class_name_get(eo_clip));
return EINA_TRUE;
}
static inline void
_efl_canvas_object_clip_unset_common(Evas_Object_Protected_Data *obj, Eina_Bool warn)
{
Evas_Object_Protected_Data *clip = obj->cur->clipper;
if (!clip) return;
if (EVAS_OBJECT_DATA_VALID(clip))
{
clip->clip.cache_clipees_answer = eina_list_free(clip->clip.cache_clipees_answer);
clip->clip.clipees = eina_list_remove(clip->clip.clipees, obj);
if (!clip->clip.clipees)
{
EINA_COW_STATE_WRITE_BEGIN(clip, state_write, cur)
{
state_write->have_clipees = 0;
if (warn && clip->is_static_clip)
{
WRN("You override static clipper, it may be dangled! "
"obj(%p) type(%s) new clip(%p)",
obj->object, obj->type, clip->object);
}
}
EINA_COW_STATE_WRITE_END(clip, state_write, cur);
/* i know this was to handle a case where a clip stops having
* children and becomes a solid colored box - no one ever does
* that... they hide the clip so dont add damages,
* But, if the clipper could affect color to its clipees, the
* clipped area should be redrawn. */
if (((clip->cur) && (clip->cur->visible)) &&
(((clip->cur->color.r != 255) || (clip->cur->color.g != 255) ||
(clip->cur->color.b != 255) || (clip->cur->color.a != 255)) ||
(clip->mask->is_mask)))
{
if (clip->layer)
{
Evas_Public_Data *e = clip->layer->evas;
evas_damage_rectangle_add(e->evas,
clip->cur->geometry.x + e->framespace.x,
clip->cur->geometry.y + e->framespace.y,
clip->cur->geometry.w,
clip->cur->geometry.h);
}
}
_efl_canvas_object_clip_mask_unset(clip);
}
evas_object_change(clip->object, clip);
if (obj->prev->clipper != clip)
efl_event_callback_del(clip->object, EFL_EVENT_DEL, _clipper_del_cb, obj->object);
}
EINA_COW_STATE_WRITE_BEGIN(obj, state_write, cur)
state_write->clipper = NULL;
EINA_COW_STATE_WRITE_END(obj, state_write, cur);
}
EOLIAN void
_efl_canvas_object_clip_set(Eo *eo_obj, Evas_Object_Protected_Data *obj, Evas_Object *eo_clip)
{
Evas_Object_Protected_Data *clip;
Evas_Public_Data *e;
EVAS_OBJECT_DATA_ALIVE_CHECK(obj);
clip = EVAS_OBJECT_DATA_SAFE_GET(eo_clip);
if (!EVAS_OBJECT_DATA_ALIVE(clip))
{
_clip_unset(eo_obj, obj);
return;
}
if (_efl_canvas_object_clip_set_block(eo_obj, obj, eo_clip, clip)) return;
if (_evas_object_intercept_call(eo_obj, EVAS_OBJECT_INTERCEPT_CB_CLIP_SET, 1, eo_clip)) return;
if (obj->is_smart && obj->smart.smart && obj->smart.smart->smart_class &&
obj->smart.smart->smart_class->clip_set)
{
obj->smart.smart->smart_class->clip_set(eo_obj, eo_clip);
}
/* unset cur clipper */
_efl_canvas_object_clip_unset_common(obj, EINA_TRUE);
/* image object clipper */
if (clip->type == o_image_type)
{
EINA_COW_WRITE_BEGIN(evas_object_mask_cow, clip->mask, Evas_Object_Mask_Data, mask)
mask->is_mask = EINA_TRUE;
EINA_COW_WRITE_END(evas_object_mask_cow, clip->mask, mask);
}
/* clip me */
if ((!clip->clip.clipees) && (clip->cur->visible))
{
/* Basically it just went invisible */
clip->changed = 1;
e = clip->layer->evas;
e->changed = 1;
/* i know this was to handle a case where a clip starts having children and
* stops being a solid colored box - no one ever does that... they hide the clp
* so dont add damages
evas_damage_rectangle_add(e->evas,
clip->cur->geometry.x + e->framespace.x,
clip->cur->geometry.y + e->framespace.y,
clip->cur->geometry.w, clip->cur->geometry.h);
*/
}
EINA_COW_STATE_WRITE_BEGIN(obj, state_write, cur)
state_write->clipper = clip;
EINA_COW_STATE_WRITE_END(obj, state_write, cur);
if (obj->prev->clipper != clip)
efl_event_callback_add(clip->object, EFL_EVENT_DEL, _clipper_del_cb, eo_obj);
clip->clip.cache_clipees_answer = eina_list_free(clip->clip.cache_clipees_answer);
clip->clip.clipees = eina_list_append(clip->clip.clipees, obj);
if (clip->clip.clipees)
{
EINA_COW_STATE_WRITE_BEGIN(clip, state_write, cur)
{
state_write->have_clipees = 1;
}
EINA_COW_STATE_WRITE_END(clip, state_write, cur);
if (clip->changed)
evas_object_update_bounding_box(eo_clip, clip, NULL);
}
evas_object_change(eo_clip, clip);
evas_object_change(eo_obj, obj);
evas_object_update_bounding_box(eo_obj, obj, NULL);
evas_object_clip_dirty(eo_obj, obj);
evas_object_recalc_clippees(obj);
if ((!obj->is_smart) &&
(!((obj->map->cur.map) && (obj->map->cur.usemap))))
{
if (evas_object_is_in_output_rect(eo_obj, obj,
obj->layer->evas->pointer.x,
obj->layer->evas->pointer.y, 1, 1))
evas_event_feed_mouse_move(obj->layer->evas->evas,
obj->layer->evas->pointer.x,
obj->layer->evas->pointer.y,
obj->layer->evas->last_timestamp,
NULL);
}
evas_object_clip_across_check(eo_obj, obj);
}
EOLIAN Evas_Object *
_efl_canvas_object_clip_get(Eo *eo_obj EINA_UNUSED, Evas_Object_Protected_Data *obj)
{
EVAS_OBJECT_DATA_ALIVE_CHECK(obj, NULL);
if (obj->cur->clipper)
return obj->cur->clipper->object;
return NULL;
}
Eina_Bool
_efl_canvas_object_clip_unset_block(Eo *eo_obj EINA_UNUSED, Evas_Object_Protected_Data *obj)
{
if (!obj->cur->clipper)
return EINA_TRUE;
evas_object_async_block(obj);
obj->clip.cache_clipees_answer = eina_list_free(obj->clip.cache_clipees_answer);
return EINA_FALSE;
}
static void
_clip_unset(Eo *eo_obj, Evas_Object_Protected_Data *obj)
{
if (_efl_canvas_object_clip_unset_block(eo_obj, obj)) return;
if (_evas_object_intercept_call(eo_obj, EVAS_OBJECT_INTERCEPT_CB_CLIP_UNSET, 1)) return;
if (obj->is_smart && obj->smart.smart && obj->smart.smart->smart_class &&
obj->smart.smart->smart_class->clip_unset)
{
obj->smart.smart->smart_class->clip_unset(eo_obj);
}
_efl_canvas_object_clip_unset_common(obj, EINA_FALSE);
evas_object_update_bounding_box(eo_obj, obj, NULL);
evas_object_change(eo_obj, obj);
evas_object_clip_dirty(eo_obj, obj);
evas_object_recalc_clippees(obj);
if ((!obj->is_smart) &&
(!((obj->map->cur.map) && (obj->map->cur.usemap))))
{
if (evas_object_is_in_output_rect(eo_obj, obj,
obj->layer->evas->pointer.x,
obj->layer->evas->pointer.y, 1, 1))
evas_event_feed_mouse_move(obj->layer->evas->evas,
obj->layer->evas->pointer.x,
obj->layer->evas->pointer.y,
obj->layer->evas->last_timestamp,
NULL);
}
evas_object_clip_across_check(eo_obj, obj);
}
EAPI void
evas_object_clip_unset(Evas_Object *eo_obj)
{
Evas_Object_Protected_Data *obj = EVAS_OBJECT_DATA_SAFE_GET(eo_obj);
EVAS_OBJECT_DATA_ALIVE_CHECK(obj);
_clip_unset(eo_obj, obj);
}
static void
_clipper_del_cb(void *data, const Efl_Event *event)
{
Evas_Object *eo_obj = data;
Evas_Object_Protected_Data *obj = efl_data_scope_get(eo_obj, EFL_CANVAS_OBJECT_CLASS);
Evas_Object_Protected_Data *clip = efl_data_scope_get(event->object, EFL_CANVAS_OBJECT_CLASS);
EVAS_OBJECT_DATA_ALIVE_CHECK(obj);
_clip_unset(eo_obj, obj);
if (obj->prev->clipper && (obj->prev->clipper == clip))
{
// not removing cb since it's the del cb... it can't be called again!
EINA_COW_STATE_WRITE_BEGIN(obj, state_write, prev)
state_write->clipper = NULL;
EINA_COW_STATE_WRITE_END(obj, state_write, prev);
}
}
void
_efl_canvas_object_clip_prev_reset(Evas_Object_Protected_Data *obj, Eina_Bool cur_prev)
{
if (obj->prev->clipper)
{
Evas_Object_Protected_Data *clip = obj->prev->clipper;
if (!cur_prev)
{
EINA_COW_STATE_WRITE_BEGIN(obj, state_write, prev)
state_write->clipper = NULL;
EINA_COW_STATE_WRITE_END(obj, state_write, prev);
}
if (clip != obj->cur->clipper)
efl_event_callback_del(clip->object, EFL_EVENT_DEL, _clipper_del_cb, obj->object);
}
}
EAPI const Eina_List *
evas_object_clipees_get(const Evas_Object *eo_obj)
{
const Evas_Object_Protected_Data *tmp;
Eina_List *l;
Eina_List *answer = NULL;
Evas_Object_Protected_Data *obj = EVAS_OBJ_GET_OR_RETURN(eo_obj, NULL);
obj->clip.cache_clipees_answer = eina_list_free(obj->clip.cache_clipees_answer);
EINA_LIST_FOREACH(obj->clip.clipees, l, tmp)
answer = eina_list_append(answer, tmp->object);
obj->clip.cache_clipees_answer = answer;
return answer;
}
typedef struct
{
Eina_Iterator iterator;
Eina_List *list;
Eina_Iterator *real_iterator;
Evas_Object *object;
} Clipee_Iterator;
static Eina_Bool
_clipee_iterator_next(Clipee_Iterator *it, void **data)
{
Evas_Object_Protected_Data *sub;
if (!eina_iterator_next(it->real_iterator, (void **) &sub))
return EINA_FALSE;
if (data) *data = sub ? sub->object : NULL;
return EINA_TRUE;
}
static void *
_clipee_iterator_get_container(Clipee_Iterator *it)
{
return it->object;
}
static void
_clipee_iterator_free(Clipee_Iterator *it)
{
eina_iterator_free(it->real_iterator);
free(it);
}
EOLIAN Eina_Iterator *
_efl_canvas_object_clipees_get(Eo *eo_obj, Evas_Object_Protected_Data *obj)
{
Clipee_Iterator *it;
it = calloc(1, sizeof(*it));
if (!it) return NULL;
EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
it->list = obj->clip.clipees;
it->real_iterator = eina_list_iterator_new(it->list);
it->iterator.version = EINA_ITERATOR_VERSION;
it->iterator.next = FUNC_ITERATOR_NEXT(_clipee_iterator_next);
it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_clipee_iterator_get_container);
it->iterator.free = FUNC_ITERATOR_FREE(_clipee_iterator_free);
it->object = eo_obj;
return &it->iterator;
}
EOLIAN Eina_Bool
_efl_canvas_object_clipees_has(Eo *eo_obj EINA_UNUSED, Evas_Object_Protected_Data *obj)
{
return (obj->clip.clipees ? EINA_TRUE : EINA_FALSE);
}
EOLIAN void
_efl_canvas_object_no_render_set(Eo *eo_obj EINA_UNUSED, Evas_Object_Protected_Data *obj, Eina_Bool enable)
{
obj->no_render = !!enable;
}
EOLIAN Eina_Bool
_efl_canvas_object_no_render_get(Eo *eo_obj EINA_UNUSED, Evas_Object_Protected_Data *obj)
{
return obj->no_render;
}
Reference in New Issue View Git Blame Copy Permalink