[gtk+] icontheme: Don't assume a symbolic icon size of 16x16

[Carlos Garnacho <carlosg src gnome org>]

commit ebdd60c63b962acaede2d699632934b1b6d6ca59
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Jun 6 18:16:05 2012 +0200

    icontheme: Don't assume a symbolic icon size of 16x16
    
    If the symbolic icon has other size than 16x16, the embedder
    SVG that overrides colors would still force that size, resulting
    in clipping instead of resizing. So fetch the original pixbuf
    size the first time a symbolic icon is requested for a GtkIconInfo,
    and use that size for the embedder SVG so it can be scaled properly
    afterwards.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=677567

 gtk/gtkicontheme.c |   27 +++++++++++++++++++++++++--
 1 files changed, 25 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkicontheme.c b/gtk/gtkicontheme.c
index fb59837..58b643f 100644
--- a/gtk/gtkicontheme.c
+++ b/gtk/gtkicontheme.c
@@ -232,6 +232,8 @@ struct _GtkIconInfo
   GdkPixbuf *pixbuf;
   GError *load_error;
   gdouble scale;
+
+  GtkRequisition *symbolic_pixbuf_size;
 };
 
 typedef struct
@@ -2737,6 +2739,8 @@ gtk_icon_info_free (GtkIconInfo *icon_info)
     g_object_unref (icon_info->pixbuf);
   if (icon_info->cache_pixbuf)
     g_object_unref (icon_info->cache_pixbuf);
+  if (icon_info->symbolic_pixbuf_size)
+    gtk_requisition_free (icon_info->symbolic_pixbuf_size);
 
   g_slice_free (GtkIconInfo, icon_info);
 }
@@ -3169,6 +3173,7 @@ _gtk_icon_info_load_symbolic_internal (GtkIconInfo  *icon_info,
   GdkPixbuf *pixbuf;
   gchar *data;
   gchar *success, *warning, *err;
+  gchar *width, *height;
 
   /* css_fg can't possibly have failed, otherwise
    * that would mean we have a broken style */
@@ -3192,13 +3197,29 @@ _gtk_icon_info_load_symbolic_internal (GtkIconInfo  *icon_info,
       err = gdk_color_to_css (&error_default_color);
     }
 
+  if (!icon_info->symbolic_pixbuf_size)
+    {
+      /* Fetch size from the original icon */
+      pixbuf = gdk_pixbuf_new_from_file (icon_info->filename, error);
+
+      if (!pixbuf)
+        return NULL;
+
+      icon_info->symbolic_pixbuf_size = gtk_requisition_new ();
+      icon_info->symbolic_pixbuf_size->width = gdk_pixbuf_get_width (pixbuf);
+      icon_info->symbolic_pixbuf_size->height = gdk_pixbuf_get_height (pixbuf);
+      g_object_unref (pixbuf);
+    }
+
+  width = g_strdup_printf ("%d", icon_info->symbolic_pixbuf_size->width);
+  height = g_strdup_printf ("%d", icon_info->symbolic_pixbuf_size->height);
 
   data = g_strconcat ("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n"
                       "<svg version=\"1.1\"\n"
                       "     xmlns=\"http://www.w3.org/2000/svg\"\n";
                       "     xmlns:xi=\"http://www.w3.org/2001/XInclude\"\n";
-                      "     width=\"16\"\n"
-                      "     height=\"16\">\n"
+                      "     width=\"", width, "\"\n"
+                      "     height=\"", height, "\">\n"
                       "  <style type=\"text/css\">\n"
                       "    rect,path {\n"
                       "      fill: ", css_fg," !important;\n"
@@ -3219,6 +3240,8 @@ _gtk_icon_info_load_symbolic_internal (GtkIconInfo  *icon_info,
   g_free (warning);
   g_free (err);
   g_free (success);
+  g_free (width);
+  g_free (height);
 
   stream = g_memory_input_stream_new_from_data (data, -1, g_free);
   pixbuf = gdk_pixbuf_new_from_stream_at_scale (stream,