[mutter] shaped-texture: Add `get_width()`/`get_height()` API

[Jonas Ådahl <jadahl src gnome org>]

commit ebc07871eb5043a856f2698bb6320a5ef7dd521d
Author: Olivier Fourdan <ofourdan redhat com>
Date:   Mon Feb 3 14:18:57 2020 +0100

    shaped-texture: Add `get_width()`/`get_height()` API
    
    Add an API to retrieve the content size of a shaped texture.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/1022

 src/compositor/meta-shaped-texture-private.h |  3 +++
 src/compositor/meta-shaped-texture.c         | 20 ++++++++++++++++++++
 2 files changed, 23 insertions(+)
---
diff --git a/src/compositor/meta-shaped-texture-private.h b/src/compositor/meta-shaped-texture-private.h
index e96c6f8a8..85d94b753 100644
--- a/src/compositor/meta-shaped-texture-private.h
+++ b/src/compositor/meta-shaped-texture-private.h
@@ -63,4 +63,7 @@ gboolean meta_shaped_texture_update_area (MetaShapedTexture     *stex,
                                           int                    height,
                                           cairo_rectangle_int_t *clip);
 
+int meta_shaped_texture_get_width (MetaShapedTexture *stex);
+int meta_shaped_texture_get_height (MetaShapedTexture *stex);
+
 #endif
diff --git a/src/compositor/meta-shaped-texture.c b/src/compositor/meta-shaped-texture.c
index 5847408a0..85a5143f9 100644
--- a/src/compositor/meta-shaped-texture.c
+++ b/src/compositor/meta-shaped-texture.c
@@ -1437,3 +1437,23 @@ meta_shaped_texture_get_buffer_scale (MetaShapedTexture *stex)
 
   return stex->buffer_scale;
 }
+
+int
+meta_shaped_texture_get_width (MetaShapedTexture *stex)
+{
+  g_return_val_if_fail (META_IS_SHAPED_TEXTURE (stex), 0);
+
+  ensure_size_valid (stex);
+
+  return stex->dst_width;
+}
+
+int
+meta_shaped_texture_get_height (MetaShapedTexture *stex)
+{
+  g_return_val_if_fail (META_IS_SHAPED_TEXTURE (stex), 0);
+
+  ensure_size_valid (stex);
+
+  return stex->dst_height;
+}