From a5c453a6eb97af0342771e4d235a2bb84427796b Mon Sep 17 00:00:00 2001
From: Benjamin Berg <benjamin@sipsolutions.net>
Date: Sun, 10 Jan 2010 14:14:27 +0000
Subject: Implement transparent-bg-hint so that mozilla can draw entries properly.

---
diff --git a/gtk/engine/sugar-style.c b/gtk/engine/sugar-style.c
index 443a708..b81fe69 100644
--- a/gtk/engine/sugar-style.c
+++ b/gtk/engine/sugar-style.c
@@ -389,8 +389,12 @@ sugar_style_draw_box (GtkStyle       *style,
         SugarInfo info;
         sugar_fill_generic_info (&info, style, state_type, shadow_type, widget, detail, x, y, width, height);
 
-        /* Fill the background with bg_color. */
-        sugar_fill_background (cr, &info);
+        /* Fill the background as it is initilized to base[NORMAL].
+         * Relevant GTK+ bug: http://bugzilla.gnome.org/show_bug.cgi?id=513471
+         * The fill only happens if no hint has been added by some application
+         * that is faking GTK+ widgets. */
+        if (!widget || !g_object_get_data(G_OBJECT (widget), "transparent-bg-hint"))
+            sugar_fill_background (cr, &info);
 
         info.cont_edges = info.ltr ? EDGE_LEFT : EDGE_RIGHT;
         sugar_remove_corners (&info.corners, info.cont_edges);
@@ -444,7 +448,8 @@ sugar_style_draw_box (GtkStyle       *style,
                 info.state = GTK_STATE_INSENSITIVE;
 
             /* Needed because the trough and bar are cached in a buffer inside GtkProgress. */
-            sugar_fill_background (cr, &info);
+            if (!widget || !g_object_get_data(G_OBJECT (widget), "transparent-bg-hint"))
+                sugar_fill_background (cr, &info);
             sugar_draw_progressbar_trough (cr, &info);
         }
     } else if (DETAIL ("bar")) {
@@ -641,7 +646,8 @@ sugar_style_draw_shadow (GtkStyle       *style,
         }
 
         /* Fill the background with bg_color. */
-        sugar_fill_background (cr, &info);
+        if (!widget || !g_object_get_data(G_OBJECT (widget), "transparent-bg-hint"))
+            sugar_fill_background (cr, &info);
         sugar_draw_entry (cr, &info);
     } else {
         gdouble line_width;
diff --git a/gtk/theme/gtkrc.em b/gtk/theme/gtkrc.em
index 56770ea..69dccd9 100644
--- a/gtk/theme/gtkrc.em
+++ b/gtk/theme/gtkrc.em
@@ -149,6 +149,11 @@ style "default"
     GtkButtonBox::child-internal-pad-x = 0
     GtkButtonBox::child-internal-pad-y = 0
 
+    # The following line hints to gecko (and possibly other appliations)
+    # that the entry should be drawn transparently on the canvas.
+    # Without this, gecko will fill in the background of the entry.
+    GtkEntry::honors-transparent-bg-hint = 1
+
     engine "sugar" {
         line_width = $line_width
         thick_line_width = $thick_line_width
--
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