[gtk+] GtkTooltip: remove hardcoded tooltip drawing

[Matthias Clasen <matthiasc src gnome org>]

commit 49bb39ecf523b7bdaa7af441e54d9f6078cca3bc
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jun 6 17:05:21 2014 -0400

    GtkTooltip: remove hardcoded tooltip drawing
    
    This is old code from dating back many years. Nowadays, we can
    just use css drawing and csd windows to achieve much the same
    effect.
    
    Themes will need some adjustment for this change.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=731187

 gtk/gtktooltip.c |  105 ------------------------------------------------------
 1 files changed, 0 insertions(+), 105 deletions(-)
---
diff --git a/gtk/gtktooltip.c b/gtk/gtktooltip.c
index 919d6ca..0d284af 100644
--- a/gtk/gtktooltip.c
+++ b/gtk/gtktooltip.c
@@ -138,12 +138,6 @@ static void       gtk_tooltip_class_init           (GtkTooltipClass *klass);
 static void       gtk_tooltip_init                 (GtkTooltip      *tooltip);
 static void       gtk_tooltip_dispose              (GObject         *object);
 
-static gboolean   gtk_tooltip_paint_window         (GtkTooltip      *tooltip,
-                                                    cairo_t         *cr);
-static void       gtk_tooltip_realize_window       (GtkTooltip      *tooltip,
-                                                    GtkWidget       *widget);
-static void       gtk_tooltip_composited_changed   (GtkTooltip      *tooltip,
-                                                    GtkWidget       *widget);
 static void       gtk_tooltip_window_hide          (GtkWidget       *widget,
                                                    gpointer         user_data);
 static void       gtk_tooltip_display_closed       (GdkDisplay      *display,
@@ -173,8 +167,6 @@ gtk_tooltip_init (GtkTooltip *tooltip)
   GtkWidget *box;
   GtkWidget *image;
   GtkWidget *label;
-  GdkScreen *screen;
-  GdkVisual *visual;
 
   tooltip->timeout_id = 0;
   tooltip->browse_mode_timeout_id = 0;
@@ -191,29 +183,14 @@ gtk_tooltip_init (GtkTooltip *tooltip)
   tooltip->last_window = NULL;
 
   window = gtk_window_new (GTK_WINDOW_POPUP);
-  screen = gtk_widget_get_screen (window);
-  visual = gdk_screen_get_rgba_visual (screen);
-
-  if (visual != NULL)
-    gtk_widget_set_visual (window, visual);
-
   gtk_window_set_type_hint (GTK_WINDOW (window), GDK_WINDOW_TYPE_HINT_TOOLTIP);
-  gtk_widget_set_app_paintable (window, TRUE);
   gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
-  gtk_widget_set_name (window, "gtk-tooltip");
   g_signal_connect (window, "hide",
                     G_CALLBACK (gtk_tooltip_window_hide), tooltip);
 
   context = gtk_widget_get_style_context (window);
   gtk_style_context_add_class (context, GTK_STYLE_CLASS_TOOLTIP);
 
-  g_signal_connect_swapped (window, "draw",
-                            G_CALLBACK (gtk_tooltip_paint_window), tooltip);
-  g_signal_connect_swapped (window, "realize",
-                            G_CALLBACK (gtk_tooltip_realize_window), tooltip);
-  g_signal_connect_swapped (window, "composited-changed",
-                            G_CALLBACK (gtk_tooltip_composited_changed), tooltip);
-
   /* FIXME: don't hardcode the padding */
   box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
   gtk_widget_set_margin_start (box, 6);
@@ -590,88 +567,6 @@ gtk_tooltip_reset (GtkTooltip *tooltip)
 }
 
 static void
-paint_background_and_frame (GtkTooltip *tooltip,
-                            cairo_t *cr)
-{
-  GtkStyleContext *context;
-  gint width, height;
-
-  width = gtk_widget_get_allocated_width (tooltip->window);
-  height = gtk_widget_get_allocated_height (tooltip->window);
-  context = gtk_widget_get_style_context (tooltip->window);
-
-  gtk_render_background (context, cr,
-                         0, 0, width, height);
-  gtk_render_frame (context, cr,
-                    0, 0, width, height);  
-}
-
-static void
-maybe_update_shape (GtkTooltip *tooltip)
-{
-  cairo_t *cr;
-  cairo_surface_t *surface;
-  cairo_region_t *region;
-
-  /* fallback to XShape only for non-composited clients */
-  if (gtk_widget_is_composited (tooltip->window))
-    {
-      gtk_widget_shape_combine_region (tooltip->window, NULL);
-      return;
-    }
-
-  surface = gdk_window_create_similar_surface (gtk_widget_get_window (tooltip->window),
-                                               CAIRO_CONTENT_COLOR_ALPHA,
-                                               gtk_widget_get_allocated_width (tooltip->window),
-                                               gtk_widget_get_allocated_height (tooltip->window));
-
-  cr = cairo_create (surface);
-  paint_background_and_frame (tooltip, cr);
-  cairo_destroy (cr);
-
-  region = gdk_cairo_region_create_from_surface (surface);
-  gtk_widget_shape_combine_region (tooltip->window, region);
-
-  cairo_surface_destroy (surface);
-  cairo_region_destroy (region);
-}
-
-static void
-gtk_tooltip_composited_changed (GtkTooltip *tooltip,
-                                GtkWidget  *widget)
-{
-  if (gtk_widget_get_realized (tooltip->window))
-    maybe_update_shape (tooltip);
-}
-
-static void
-gtk_tooltip_realize_window (GtkTooltip *tooltip,
-                            GtkWidget *widget)
-{
-  maybe_update_shape (tooltip);
-}
-
-static gboolean
-gtk_tooltip_paint_window (GtkTooltip *tooltip,
-                          cairo_t    *cr)
-{
-  if (gtk_widget_is_composited (tooltip->window))
-    {
-      /* clear any background */
-      cairo_save (cr);
-      cairo_set_source_rgba (cr, 0, 0, 0, 0);
-      cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
-      cairo_paint (cr);
-      cairo_restore (cr);
-    }
-
-  maybe_update_shape (tooltip);
-  paint_background_and_frame (tooltip, cr);
-
-  return FALSE;
-}
-
-static void
 gtk_tooltip_window_hide (GtkWidget *widget,
                         gpointer   user_data)
 {