[gtk+/wip/matthiasc/icon-texture-cache: 1/2] icon theme: Add a texture cache

[Matthias Clasen <matthiasc src gnome org>]

commit 2494e2719d92811f64f2e2c0fcb43e5d114150ec
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Oct 23 07:51:45 2017 +0200

    icon theme: Add a texture cache
    
    Return cached textures for icons. This lets us avoid duplicate
    texture uploads for icons whose surfaces we already cache.

 docs/reference/gtk/gtk4-sections.txt |    1 +
 gtk/gtkicontheme.c                   |   35 ++++++++++++++++++++++++++++++++++
 gtk/gtkicontheme.h                   |    4 +++
 3 files changed, 40 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gtk/gtk4-sections.txt b/docs/reference/gtk/gtk4-sections.txt
index 57cb5e9..3cc5327 100644
--- a/docs/reference/gtk/gtk4-sections.txt
+++ b/docs/reference/gtk/gtk4-sections.txt
@@ -5446,6 +5446,7 @@ gtk_icon_theme_lookup_by_gicon_for_scale
 gtk_icon_theme_load_icon
 gtk_icon_theme_load_icon_for_scale
 gtk_icon_theme_load_surface
+gtk_icon_theme_load_texture
 gtk_icon_theme_list_contexts
 gtk_icon_theme_list_icons
 gtk_icon_theme_get_icon_sizes
diff --git a/gtk/gtkicontheme.c b/gtk/gtkicontheme.c
index 2a663c5..64842b4 100644
--- a/gtk/gtkicontheme.c
+++ b/gtk/gtkicontheme.c
@@ -225,6 +225,7 @@ struct _GtkIconInfo
    */
   GdkPixbuf *pixbuf;
   GdkPixbuf *proxy_pixbuf;
+  GskTexture *texture;
   GError *load_error;
   gdouble unscaled_scale;
   gdouble scale;
@@ -4005,6 +4006,40 @@ gtk_icon_info_load_icon (GtkIconInfo *icon_info,
 }
 
 /**
+ * gtk_icon_info_load_texture:
+ * @icon_info: a #GtkIconInfo
+ *
+ * Returns a texture object that can be used to render the icon
+ * with GSK.
+ *
+ * Returns: (transfer full): the icon texture; this may be a newly
+ *     created texture or a new reference to an exiting texture, so you must
+ *     not modify the icon. Use g_object_unref() to release your
+ *     reference.
+ *
+ * Since: 3.94
+ */
+GskTexture *
+gtk_icon_info_load_texture (GtkIconInfo *icon_info)
+{
+  if (!icon_info->texture)
+    {
+      GdkPixbuf *pixbuf;
+
+      pixbuf = gtk_icon_info_load_icon (icon_info, NULL);
+      icon_info->texture = gsk_texture_new_for_pixbuf (pixbuf);
+      g_object_unref (pixbuf);
+
+      g_object_add_weak_pointer (icon_info->texture, &icon_info->texture);
+    }
+
+  if (icon_info->in_cache != NULL)
+    ensure_in_lru_cache (icon_info->in_cache, icon_info);
+
+  return g_object_ref (icon_info->texture);
+}
+
+/**
  * gtk_icon_info_load_surface:
  * @icon_info: a #GtkIconInfo from gtk_icon_theme_lookup_icon()
  * @for_window: (allow-none): #GdkWindow to optimize drawing for, or %NULL
diff --git a/gtk/gtkicontheme.h b/gtk/gtkicontheme.h
index a76a978..4f69717 100644
--- a/gtk/gtkicontheme.h
+++ b/gtk/gtkicontheme.h
@@ -25,6 +25,7 @@
 #include <gdk-pixbuf/gdk-pixbuf.h>
 #include <gdk/gdk.h>
 #include <gtk/gtkstylecontext.h>
+#include <gsk/gsk.h>
 
 G_BEGIN_DECLS
 
@@ -293,6 +294,9 @@ GDK_AVAILABLE_IN_3_10
 cairo_surface_t *     gtk_icon_info_load_surface       (GtkIconInfo   *icon_info,
                                                        GdkWindow     *for_window,
                                                        GError       **error);
+GDK_AVAILABLE_IN_3_94
+GskTexture *          gtk_icon_info_load_texture       (GtkIconInfo   *icon_info);
+
 GDK_AVAILABLE_IN_3_8
 void                  gtk_icon_info_load_icon_async   (GtkIconInfo          *icon_info,
                                                       GCancellable         *cancellable,