evas: find a best possible output to manage an object to get pixels from.

The code shouldn't really need an output for getting the pixels, it just
happen that some of the backend function really need one to get a GL context.

diff --git a/src/lib/evas/canvas/evas_object_image.c b/src/lib/evas/canvas/evas_object_image.c
index 2fb8d65..1ba3971 100644 (file)
--- a/src/lib/evas/canvas/evas_object_image.c
+++ b/src/lib/evas/canvas/evas_object_image.c
@@ -128,6 +128,29 @@ evas_object_image_render_prepare(Evas_Object *eo_obj EINA_UNUSED, Evas_Object_Pr
    // XXX: if image is a proxy, PREPEND to prerender list in evas canvas
 }
 
+static void *
+_evas_object_image_output_find(Evas_Object_Protected_Data *obj)
+{
+   Efl_Canvas_Output *output;
+   Eina_List *l;
+   const Eina_Rectangle geometry = {
+     obj->cur->geometry.x,
+     obj->cur->geometry.y,
+     obj->cur->geometry.w,
+     obj->cur->geometry.h
+   };
+
+   EINA_LIST_FOREACH(obj->layer->evas->outputs, l, output)
+     {
+        if (eina_rectangles_intersect(&output->geometry, &geometry))
+          return output->output;
+     }
+
+   // Always return an output, as evas rely on that even if the object is out of screen.
+   output = eina_list_data_get(obj->layer->evas->outputs);
+   return output->output;
+}
+
 void
 _evas_image_cleanup(Evas_Object *eo_obj, Evas_Object_Protected_Data *obj, Evas_Image_Data *o)
 {
@@ -861,14 +884,16 @@ _efl_canvas_image_internal_efl_file_save(const Eo *eo_obj, Evas_Image_Data *o, c
    int imagew, imageh, uvw, uvh;
    Eina_Rw_Slice slice = {};
    DATA32 *data = NULL;
-   void *pixels = NULL;
+   void *pixels;
+   void *output;
 
    obj = efl_data_scope_get(eo_obj, EFL_CANVAS_OBJECT_CLASS);
 
    EINA_SAFETY_ON_NULL_RETURN_VAL(file, EINA_FALSE);
    evas_object_async_block(obj);
 
-   pixels = _evas_image_pixels_get((Eo *)eo_obj, obj, ENC, ENDT, NULL, NULL,
+   output = _evas_object_image_output_find(obj);
+   pixels = _evas_image_pixels_get((Eo *)eo_obj, obj, ENC, output, NULL, NULL,
                                    0, 0,
                                    &imagew, &imageh, &uvw, &uvh, EINA_TRUE, EINA_TRUE);
    if (!pixels) goto no_pixels;
@@ -3068,6 +3093,7 @@ evas_object_image_is_inside(Evas_Object *eo_obj,
    int imagew, imageh, uvw, uvh, ix, iy, iw, ih, idw, idh, idx, idy;
    int is_inside = 0;
    void *pixels;
+   void *output;
 
    // FIXME: The below loop is incredibly dubious and probably should be simplified.
    // We're looking for one single pixel, not a random series of positions.
@@ -3075,7 +3101,8 @@ evas_object_image_is_inside(Evas_Object *eo_obj,
    /* the following code is similar to evas_object_image_render(), but doesn't
     * draw, just get the pixels so we can check the transparency.
     */
-   pixels = _evas_image_pixels_get(eo_obj, obj, ENC, ENDT, NULL, NULL, 0, 0,
+   output = _evas_object_image_output_find(obj);
+   pixels = _evas_image_pixels_get(eo_obj, obj, ENC, output, NULL, NULL, 0, 0,
                                    &imagew, &imageh, &uvw, &uvh, EINA_TRUE, EINA_FALSE);
    if (!pixels) return is_inside;