2002-11-08 00:02:15 -08:00
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#include "evas_common.h"
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#include "evas_private.h"
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void
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2005-04-03 07:22:17 -07:00
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evas_object_clip_dirty(Evas_Object *obj)
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2002-11-08 00:02:15 -08:00
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{
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2008-10-21 09:31:05 -07:00
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Eina_List *l;
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Evas_Object *data;
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2005-05-21 19:49:50 -07:00
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2005-04-03 07:22:17 -07:00
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obj->cur.cache.clip.dirty = 1;
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2008-10-21 09:31:05 -07:00
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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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2005-04-03 07:22:17 -07:00
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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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2008-10-21 09:31:05 -07:00
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Eina_List *l;
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Evas_Object *data;
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2005-05-21 19:49:50 -07:00
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2005-07-30 02:52:53 -07:00
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if (obj->cur.cache.clip.dirty)
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2002-11-08 00:02:15 -08:00
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{
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2005-07-30 02:52:53 -07:00
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evas_object_clip_recalc(obj);
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2008-10-21 09:31:05 -07:00
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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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2002-11-08 00:02:15 -08:00
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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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2010-08-31 15:16:08 -07:00
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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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*/
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static void
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evas_object_child_map_across_mark(Evas_Object *obj, Eina_List *clippers,
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Eina_Bool map)
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{
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#if 0
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if (map)
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{
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// if obj->cur.clipper is in clippers list, then set
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// obj->cur.clip_across_map to 1
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}
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else
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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_mapped_clip_across_mark(Evas_Object *obj)
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{
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return;
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#if 0
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Eina_Bool map = 0;
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if ((obj->cur.map) && (obj->cur.usemap)) map = 1;
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if (map)
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{
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Eina_List *list = NULL;
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// FIXME: list = build list of all clippers that are children of obj
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// up until any obj that has map applied to it. if map is applied
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// tghen we must assume this has been run before o9n that obj and
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// its children etc.
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evas_object_child_map_across_mark(obj, list, map);
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}
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else
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evas_object_child_map_across_mark(obj, NULL, map);
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#endif
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}
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2002-11-08 00:02:15 -08:00
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/* public functions */
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2004-08-15 22:13:25 -07:00
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/**
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2010-03-17 21:57:40 -07:00
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* @addtogroup Evas_Object_Group_Basic
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2008-11-01 14:50:36 -07:00
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* @{
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*/
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2002-12-09 15:00:10 -08:00
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/**
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2003-03-04 18:30:20 -08:00
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* Clip one object to another.
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2002-12-09 15:00:10 -08:00
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* @param obj The object to be clipped
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* @param clip The object to clip @p obj by
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2005-05-21 19:49:50 -07:00
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*
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2002-12-09 15:00:10 -08:00
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* This function will clip the object @p obj to the area occupied by the
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2003-10-17 20:34:00 -07:00
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* object @p clipper. This means the object @p obj will only be visible within
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* the area occupied by the clipping object (@p clip). The color of the object
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* being clipped will be multiplied by the color of the clipping object, so
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* the resulting color for the clipped object is
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* RESULT = (OBJ * CLIP) / (255 * 255) per color element (red, green, blue and
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* alpha). Clipping is recursive, so clip objects may be clipped by other
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* objects, and their color will in tern be multiplied. You may NOT set up
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2004-02-16 11:22:48 -08:00
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* circular clipping lists (i.e. object 1 clips object 2 which clips object 1).
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2003-10-17 20:34:00 -07:00
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* The behavior of Evas is undefined in this case. Objects which do not clip
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* others are visible as normal, those that clip 1 or more objects become
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* invisible themselves, only affecting what they clip. If an object ceases to
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* have other objects being clipped by it, it will become visible again. The
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* visibility of an object affects the objects that are clipped by it, so if
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2004-02-16 11:22:48 -08:00
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* the object clipping others is not shown, the objects clipped will not be
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2003-10-17 20:34:00 -07:00
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* shown either. If the object was being clipped by another object when this
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* function is called, it is implicitly removed from the clipper it is being
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* clipped to, and now is made to clip its new clipper.
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2005-05-21 19:49:50 -07:00
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*
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2003-10-17 20:34:00 -07:00
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* At the moment the only objects that can validly be used to clip other
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2004-02-16 11:22:48 -08:00
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* objects are rectangle objects. All other object types are invalid and the
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* result of using them is undefined.
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2005-05-21 19:49:50 -07:00
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*
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2003-10-17 20:34:00 -07:00
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* The clip object @p clip must be a valid object, but may also be NULL in
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* which case the effect of this function is the same as calling
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* evas_object_clip_unset() on the @p obj object.
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2005-05-21 19:49:50 -07:00
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*
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2002-12-09 15:00:10 -08:00
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* Example:
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* @code
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* extern Evas *evas;
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* extern Evas_Object *obj;
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* Evas_Object *clipper;
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2005-05-21 19:49:50 -07:00
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*
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2002-12-09 15:00:10 -08:00
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* clipper = evas_object_rectangle_add(evas);
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2004-02-16 11:22:48 -08:00
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* evas_object_color_set(clipper, 255, 255, 255, 255);
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2002-12-09 15:00:10 -08:00
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* evas_object_move(clipper, 10, 10);
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* evas_object_resize(clipper, 20, 50);
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* evas_object_clip_set(obj, clipper);
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* evas_object_show(clipper);
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* @endcode
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2004-08-15 22:13:25 -07:00
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*
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2002-12-09 15:00:10 -08:00
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*/
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2006-01-06 15:05:17 -08:00
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EAPI void
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2002-11-08 00:02:15 -08:00
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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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2005-05-21 19:49:50 -07:00
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if (!clip)
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2002-11-08 00:02:15 -08:00
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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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2007-04-12 04:17:40 -07:00
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if (obj == clip) return;
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2007-08-22 09:45:37 -07:00
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if (evas_object_intercept_call_clip_set(obj, clip)) return;
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2002-11-08 00:02:15 -08:00
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if (obj->smart.smart)
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{
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2003-10-08 20:05:17 -07:00
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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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2002-11-08 00:02:15 -08:00
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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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2008-10-21 09:31:05 -07:00
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obj->cur.clipper->clip.clipees = eina_list_remove(obj->cur.clipper->clip.clipees, obj);
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2010-02-01 11:50:01 -08:00
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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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2005-11-01 20:03:55 -08:00
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evas_object_change(obj->cur.clipper);
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2002-11-08 00:02:15 -08:00
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evas_object_change(obj);
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2005-05-21 19:49:50 -07:00
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obj->cur.clipper = NULL;
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2002-11-08 00:02:15 -08:00
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}
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/* clip me */
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2010-08-21 06:52:25 -07:00
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if ((!clip->clip.clipees) && (clip->cur.visible))
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2004-09-21 21:37:51 -07:00
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{
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2005-01-19 22:54:45 -08:00
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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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2004-09-21 21:37:51 -07:00
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}
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2002-11-08 00:02:15 -08:00
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obj->cur.clipper = clip;
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2008-10-21 09:31:05 -07:00
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clip->clip.clipees = eina_list_append(clip->clip.clipees, obj);
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2005-11-01 20:03:55 -08:00
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if (clip->clip.clipees) clip->cur.have_clipees = 1;
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evas_object_change(clip);
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2002-11-08 00:02:15 -08:00
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evas_object_change(obj);
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2005-04-03 07:22:17 -07:00
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evas_object_clip_dirty(obj);
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2005-07-30 02:52:53 -07:00
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evas_object_recalc_clippees(obj);
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2002-11-08 00:02:15 -08:00
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if (!obj->smart.smart)
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{
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2005-05-21 19:49:50 -07:00
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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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2002-11-08 00:02:15 -08:00
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obj->layer->evas->pointer.y, 1, 1))
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2004-12-13 19:21:32 -08:00
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evas_event_feed_mouse_move(obj->layer->evas,
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2005-05-21 19:49:50 -07:00
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obj->layer->evas->pointer.x,
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2004-12-13 19:21:32 -08:00
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obj->layer->evas->pointer.y,
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2005-07-25 02:55:47 -07:00
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obj->layer->evas->last_timestamp,
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2004-12-13 19:21:32 -08:00
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NULL);
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2002-11-08 00:02:15 -08:00
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}
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}
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2003-03-04 18:30:20 -08:00
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/**
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2003-10-17 20:34:00 -07:00
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* Get the object clipping this one (if any).
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* @param obj The object to get the clipper from
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2003-03-04 18:30:20 -08:00
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*
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2004-02-16 11:22:48 -08:00
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* This function returns the the object clipping @p obj. If @p obj not being
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2003-10-17 20:34:00 -07:00
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* clipped, NULL is returned. The object @p obj must be a valid object.
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2005-05-21 19:49:50 -07:00
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*
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2004-02-16 11:22:48 -08:00
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* See also evas_object_clip_set(), evas_object_clip_unset() and
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2003-10-17 20:34:00 -07:00
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* evas_object_clipees_get().
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2005-05-21 19:49:50 -07:00
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*
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2003-10-17 20:34:00 -07:00
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* Example:
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* @code
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* extern Evas_Object *obj;
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* Evas_Object *clipper;
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2005-05-21 19:49:50 -07:00
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*
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2003-10-17 20:34:00 -07:00
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* clipper = evas_object_clip_get(obj);
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* if (clipper) evas_object_show(clipper);
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* @endcode
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2005-05-21 19:49:50 -07:00
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*
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2003-03-04 18:30:20 -08:00
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*/
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2006-01-06 15:05:17 -08:00
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EAPI Evas_Object *
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2008-02-08 14:35:19 -08:00
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evas_object_clip_get(const Evas_Object *obj)
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2002-11-08 00:02:15 -08:00
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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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2003-03-04 18:30:20 -08:00
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/**
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2003-10-17 20:34:00 -07:00
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* Disable clipping for an object.
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2003-03-04 18:30:20 -08:00
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*
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2003-10-17 20:34:00 -07:00
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* @param obj The object to cease clipping on
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2005-05-21 19:49:50 -07:00
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*
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2003-10-17 20:34:00 -07:00
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* This function disables clipping for the object @p obj, if it was already
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* clipped. If it wasn't, this has no effect. The object @p obj must be a
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* valid object.
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2005-05-21 19:49:50 -07:00
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*
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* See also evas_object_clip_set(), evas_object_clipees_get() and
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2003-10-17 20:34:00 -07:00
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* evas_object_clip_get().
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2005-05-21 19:49:50 -07:00
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*
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2003-10-17 20:34:00 -07:00
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* Example:
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* @code
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* extern Evas_Object *obj;
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* Evas_Object *clipper;
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2005-05-21 19:49:50 -07:00
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*
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2003-10-17 20:34:00 -07:00
|
|
|
* clipper = evas_object_clip_get(obj);
|
|
|
|
* if (clipper)
|
|
|
|
* {
|
|
|
|
* evas_object_clip_unset(obj);
|
|
|
|
* evas_object_hide(obj);
|
|
|
|
* }
|
|
|
|
* @endcode
|
2005-05-21 19:49:50 -07:00
|
|
|
*
|
2003-03-04 18:30:20 -08:00
|
|
|
*/
|
2006-01-06 15:05:17 -08:00
|
|
|
EAPI void
|
2002-11-08 00:02:15 -08:00
|
|
|
evas_object_clip_unset(Evas_Object *obj)
|
|
|
|
{
|
|
|
|
MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
|
|
|
|
return;
|
|
|
|
MAGIC_CHECK_END();
|
|
|
|
if (!obj->cur.clipper) return;
|
|
|
|
/* unclip */
|
2007-08-22 09:45:37 -07:00
|
|
|
if (evas_object_intercept_call_clip_unset(obj)) return;
|
2002-11-08 00:02:15 -08:00
|
|
|
if (obj->smart.smart)
|
|
|
|
{
|
2003-10-08 20:05:17 -07:00
|
|
|
if (obj->smart.smart->smart_class->clip_unset)
|
|
|
|
obj->smart.smart->smart_class->clip_unset(obj);
|
2002-11-08 00:02:15 -08:00
|
|
|
}
|
2009-09-03 22:13:19 -07:00
|
|
|
if (obj->cur.clipper)
|
2006-09-08 10:59:19 -07:00
|
|
|
{
|
2008-10-21 09:31:05 -07:00
|
|
|
obj->cur.clipper->clip.clipees = eina_list_remove(obj->cur.clipper->clip.clipees, obj);
|
2009-09-03 22:13:19 -07:00
|
|
|
if (!obj->cur.clipper->clip.clipees)
|
2010-02-01 11:50:01 -08:00
|
|
|
{
|
|
|
|
obj->cur.clipper->cur.have_clipees = 0;
|
|
|
|
if (obj->cur.clipper->cur.visible)
|
|
|
|
evas_damage_rectangle_add(obj->cur.clipper->layer->evas,
|
|
|
|
obj->cur.clipper->cur.geometry.x,
|
|
|
|
obj->cur.clipper->cur.geometry.y,
|
|
|
|
obj->cur.clipper->cur.geometry.w,
|
|
|
|
obj->cur.clipper->cur.geometry.h);
|
|
|
|
}
|
2006-09-08 10:59:19 -07:00
|
|
|
evas_object_change(obj->cur.clipper);
|
|
|
|
}
|
2002-11-08 00:02:15 -08:00
|
|
|
obj->cur.clipper = NULL;
|
|
|
|
evas_object_change(obj);
|
2005-04-03 07:22:17 -07:00
|
|
|
evas_object_clip_dirty(obj);
|
2005-07-30 02:52:53 -07:00
|
|
|
evas_object_recalc_clippees(obj);
|
2002-11-08 00:02:15 -08:00
|
|
|
if (!obj->smart.smart)
|
|
|
|
{
|
2005-05-21 19:49:50 -07:00
|
|
|
if (evas_object_is_in_output_rect(obj,
|
|
|
|
obj->layer->evas->pointer.x,
|
2002-11-08 00:02:15 -08:00
|
|
|
obj->layer->evas->pointer.y, 1, 1))
|
2005-05-21 19:49:50 -07:00
|
|
|
evas_event_feed_mouse_move(obj->layer->evas,
|
|
|
|
obj->layer->evas->pointer.x,
|
2004-12-13 19:21:32 -08:00
|
|
|
obj->layer->evas->pointer.y,
|
2005-07-25 02:55:47 -07:00
|
|
|
obj->layer->evas->last_timestamp,
|
2004-12-13 19:21:32 -08:00
|
|
|
NULL);
|
2002-11-08 00:02:15 -08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2003-03-04 18:30:20 -08:00
|
|
|
/**
|
2003-10-17 20:34:00 -07:00
|
|
|
* Return a list of objects currently clipped by a specific object.
|
2005-05-21 19:49:50 -07:00
|
|
|
*
|
2003-10-17 20:34:00 -07:00
|
|
|
* @param obj The object to get a list of clippees from
|
2005-05-21 19:49:50 -07:00
|
|
|
*
|
2003-10-17 20:34:00 -07:00
|
|
|
* This returns the inernal list handle that contains all objects clipped by
|
|
|
|
* the object @p obj. If none are clipped, it returns NULL. This list is only
|
2004-02-16 11:22:48 -08:00
|
|
|
* valid until the clip list is changed and should be fetched again with another
|
|
|
|
* call to evas_object_clipees_get() if any objects being clipped by this object
|
|
|
|
* are unclipped, clipped by a new object, are deleted or the clipper is
|
|
|
|
* deleted. These operations will invalidate the list returned so it should
|
|
|
|
* not be used anymore after that point. Any use of the list after this may have
|
2003-10-17 20:34:00 -07:00
|
|
|
* undefined results, not limited just to strange behavior but possible
|
2004-02-16 11:22:48 -08:00
|
|
|
* segfaults and other strange memory errors. The object @p obj must be a valid
|
|
|
|
* object.
|
2003-03-04 18:30:20 -08:00
|
|
|
*
|
2005-05-21 19:49:50 -07:00
|
|
|
* See also evas_object_clip_set(), evas_object_clip_unset() and
|
2003-10-17 20:34:00 -07:00
|
|
|
* evas_object_clip_get().
|
2005-05-21 19:49:50 -07:00
|
|
|
*
|
2003-10-17 20:34:00 -07:00
|
|
|
* Example:
|
|
|
|
* @code
|
|
|
|
* extern Evas_Object *obj;
|
|
|
|
* Evas_Object *clipper;
|
2005-05-21 19:49:50 -07:00
|
|
|
*
|
2003-10-17 20:34:00 -07:00
|
|
|
* clipper = evas_object_clip_get(obj);
|
|
|
|
* if (clipper)
|
|
|
|
* {
|
2008-10-21 09:31:05 -07:00
|
|
|
* Eina_List *clippees, *l;
|
|
|
|
* Evas_Object *obj_tmp;
|
2005-05-21 19:49:50 -07:00
|
|
|
*
|
2003-10-17 20:34:00 -07:00
|
|
|
* clippees = evas_object_clipees_get(clipper);
|
2008-10-21 09:31:05 -07:00
|
|
|
* printf("Clipper clips %i objects\n", eina_list_count(clippees));
|
|
|
|
* EINA_LIST_FOREACH(clippees, l, obj_tmp)
|
2003-10-17 20:34:00 -07:00
|
|
|
* evas_object_show(obj_tmp);
|
|
|
|
* }
|
|
|
|
* @endcode
|
2003-03-04 18:30:20 -08:00
|
|
|
*/
|
2008-10-21 09:31:05 -07:00
|
|
|
EAPI const Eina_List *
|
2008-02-08 14:35:19 -08:00
|
|
|
evas_object_clipees_get(const Evas_Object *obj)
|
2002-11-08 00:02:15 -08:00
|
|
|
{
|
|
|
|
MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
|
|
|
|
return NULL;
|
|
|
|
MAGIC_CHECK_END();
|
|
|
|
return obj->clip.clipees;
|
|
|
|
}
|
2008-11-01 14:50:36 -07:00
|
|
|
|
|
|
|
/**
|
|
|
|
* @}
|
|
|
|
*/
|