Edje: Set the min, max sizes of the image automatically.

Set the min, max sizes of the image automatically,
if it uses image set and there's no setting about min, max sizes.
This idea is originated by Jinsol Park.

@feature

src/bin/edje/edje_cc_out.c

@@ -2536,6 +2536,131 @@ data_process_part_set(Part_Lookup *target, int value)
    return EINA_FALSE;
 }
 
+static int
+_data_image_w_size_compare_cb(const void *data1, const void *data2)
+{
+   const Edje_Image_Directory_Set_Entry *img1 = data1;
+   const Edje_Image_Directory_Set_Entry *img2 = data2;
+
+   if (img1->size.w < img2->size.w) return -1;
+   if (img1->size.w > img2->size.w) return 1;
+
+   return 0;
+}
+
+static int
+_data_image_h_size_compare_cb(const void *data1, const void *data2)
+{
+   const Edje_Image_Directory_Set_Entry *img1 = data1;
+   const Edje_Image_Directory_Set_Entry *img2 = data2;
+
+   if (img1->size.h < img2->size.h) return -1;
+   if (img1->size.h > img2->size.h) return 1;
+
+   return 0;
+}
+
+static void
+_data_image_sets_size_set()
+{
+   Evas *evas;
+   Ecore_Evas *ee;
+   Edje_Image_Directory_Set *set;
+   Edje_Image_Directory_Set_Entry *simg, *preimg;
+   Eina_List *l, *entries;
+   unsigned int i;
+
+   ecore_evas_init();
+   ee = ecore_evas_buffer_new(1, 1);
+   if (!ee)
+     {
+        ERR("Cannot create buffer engine canvas for image load.");
+        exit(-1);
+     }
+   evas = ecore_evas_get(ee);
+
+   for (i = 0; i < edje_file->image_dir->sets_count; i++)
+     {
+        set = edje_file->image_dir->sets + i;
+
+        EINA_LIST_FOREACH(set->entries, l, simg)
+          {
+             Evas_Object *im;
+             Eina_List *ll;
+             char *s;
+
+             im = evas_object_image_add(evas);
+             EINA_LIST_FOREACH(img_dirs, ll, s)
+               {
+                  char buf[PATH_MAX];
+                  int load_err = EVAS_LOAD_ERROR_NONE;
+
+                  snprintf(buf, sizeof(buf), "%s/%s", s, simg->name);
+                  evas_object_image_file_set(im, buf, NULL);
+                  load_err = evas_object_image_load_error_get(im);
+                  if (load_err == EVAS_LOAD_ERROR_NONE)
+                    {
+                       evas_object_image_size_get(im, &simg->size.w, &simg->size.h);
+                       break;
+                    }
+               }
+             evas_object_del(im);
+          }
+
+        entries = eina_list_clone(set->entries);
+
+        entries = eina_list_sort(entries, 0, _data_image_w_size_compare_cb);
+        preimg = eina_list_data_get(entries);
+        EINA_LIST_FOREACH(entries, l, simg)
+          {
+             if (simg == preimg) continue;
+             if (!(preimg->size.max.w) && !(simg->size.min.w))
+               {
+                  preimg->size.max.w = (preimg->size.w + simg->size.w) / 2;
+                  simg->size.min.w = preimg->size.max.w + 1;
+                  if (simg->size.min.w <= (simg->border.l + simg->border.r))
+                    {
+                       preimg->size.max.w = simg->border.l + simg->border.r;
+                       simg->size.min.w = preimg->size.max.w + 1;
+                    }
+               }
+             else if (preimg->size.max.w && !(simg->size.min.w))
+               simg->size.min.w = preimg->size.max.w + 1;
+             else if (!(preimg->size.max.w) && simg->size.min.w)
+               preimg->size.max.w = simg->size.min.w - 1;
+             preimg = simg;
+          }
+        simg = eina_list_data_get(eina_list_last(entries));
+        if (!(simg->size.max.w)) simg->size.max.w = 99999;
+
+        entries = eina_list_sort(entries, 0, _data_image_h_size_compare_cb);
+        preimg = eina_list_data_get(entries);
+        EINA_LIST_FOREACH(entries, l, simg)
+          {
+             if (simg == preimg) continue;
+             if (!(preimg->size.max.h) && !(simg->size.min.h))
+               {
+                  preimg->size.max.h = (preimg->size.h + simg->size.h) / 2;
+                  simg->size.min.h = preimg->size.max.h + 1;
+                  if (simg->size.min.h <= (simg->border.t + simg->border.b))
+                    {
+                       preimg->size.max.h = simg->border.t + simg->border.b;
+                       simg->size.min.h = preimg->size.max.h + 1;
+                    }
+               }
+             else if (preimg->size.max.h && !(simg->size.min.h))
+               simg->size.min.h = preimg->size.max.h + 1;
+             else if (!(preimg->size.max.h) && simg->size.min.h)
+               preimg->size.max.h = simg->size.min.h - 1;
+             preimg = simg;
+          }
+        simg = eina_list_data_get(eina_list_last(entries));
+        if (!(simg->size.max.h)) simg->size.max.h = 99999;
+
+        eina_list_free(entries);
+     }
+}
+
 static void
 _data_image_id_update(Eina_List *images_unused_list)
 {
@@ -2980,10 +3105,13 @@ free_group:
                   free(set_e);
                }
           }
+
         /* update image id in parts */
         if (images_unused_list) _data_image_id_update(images_unused_list);
         EINA_LIST_FREE(images_unused_list, iui)
            free(iui);
+
+        _data_image_sets_size_set();
      }
 
    eina_hash_free(images_in_use);

src/lib/edje/edje_private.h

@@ -574,10 +574,12 @@ struct _Edje_Image_Directory_Set_Entry
    int id;
 
    struct {
-     struct {
-       int w;
-       int h;
-     } min, max;
+      int w;
+      int h;
+      struct {
+         int w;
+         int h;
+      } min, max;
    } size;
 
    struct {