[metacity] fixedtip: use a tooltip style

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 3aa71b77bf4c272b31d1e949d62fc31e8bd914c2
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Apr 5 23:02:21 2015 +0300

    fixedtip: use a tooltip style

 src/ui/fixedtip.c |   85 ++++++++++++++++++++++++++---------------------------
 1 files changed, 42 insertions(+), 43 deletions(-)
---
diff --git a/src/ui/fixedtip.c b/src/ui/fixedtip.c
index 1d2f5f0..2c6c58a 100644
--- a/src/ui/fixedtip.c
+++ b/src/ui/fixedtip.c
@@ -33,34 +33,29 @@ static GtkWidget *tip = NULL;
  * The actual text that gets displayed.
  */
 static GtkWidget *label = NULL;
-/*
- * X coordinate of the right-hand edge of the screen.
- *
- * \bug  This appears to be a bug; screen_right_edge is calculated only when
- *       the window is redrawn.  Actually we should never cache it because
- *       different windows are different sizes.
- */
-static int screen_right_edge = 0;
-/*
- * Y coordinate of the bottom edge of the screen.
+
+/**
  *
- * \bug  As with screen_right_edge.
  */
-static int screen_bottom_edge = 0;
+static GdkScreen *screen = NULL;
 
-static gint
-draw_handler (GtkWidget *tooltips,
-              cairo_t   *cr,
-              gpointer   user_data)
+static gboolean
+draw_handler (GtkWidget *widget,
+              cairo_t   *cr)
 {
-  if (tooltips != NULL)
-    {
-      gtk_render_background (gtk_widget_get_style_context (tooltips),
-                             cr,
-                             0, 0,
-                             gtk_widget_get_allocated_width (tooltips),
-                             gtk_widget_get_allocated_height (tooltips));
-    }
+  GtkStyleContext *context;
+  gint width;
+  gint height;
+
+  if (widget == NULL)
+    return FALSE;
+
+  context = gtk_widget_get_style_context (widget);
+  width = gtk_widget_get_allocated_width (widget);
+  height = gtk_widget_get_allocated_height (widget);
+
+  gtk_render_background (context, cr, 0, 0, width, height);
+  gtk_render_frame (context, cr, 0, 0, width, height);
 
   return FALSE;
 }
@@ -70,35 +65,34 @@ meta_fixed_tip_show (int screen_number,
                      int root_x, int root_y,
                      const char *markup_text)
 {
-  int w, h;
+  gint w;
+  gint h;
+  gint mon_num;
+  GdkRectangle monitor;
+  gint screen_right_edge;
 
   if (tip == NULL)
     {
+      GdkVisual *visual;
+
       tip = gtk_window_new (GTK_WINDOW_POPUP);
+
       gtk_window_set_type_hint (GTK_WINDOW(tip), GDK_WINDOW_TYPE_HINT_TOOLTIP);
+      gtk_style_context_add_class (gtk_widget_get_style_context (tip),
+                                   GTK_STYLE_CLASS_TOOLTIP);
+
+      screen = gdk_display_get_screen (gdk_display_get_default (), screen_number);
+      visual = gdk_screen_get_rgba_visual (screen);
 
-      {
-        GdkScreen *gdk_screen;
-       GdkRectangle monitor;
-       gint mon_num;
-
-        gdk_screen = gdk_display_get_screen (gdk_display_get_default (),
-                                             screen_number);
-        gtk_window_set_screen (GTK_WINDOW (tip),
-                               gdk_screen);
-       mon_num = gdk_screen_get_monitor_at_point (gdk_screen, root_x, root_y);
-       gdk_screen_get_monitor_geometry (gdk_screen, mon_num, &monitor);
-       screen_right_edge = monitor.x + monitor.width;
-       screen_bottom_edge = monitor.y + monitor.height;
-      }
+      gtk_window_set_screen (GTK_WINDOW (tip), screen);
+
+      if (visual != NULL)
+        gtk_widget_set_visual (tip, visual);
 
       gtk_widget_set_app_paintable (tip, TRUE);
       gtk_window_set_resizable (GTK_WINDOW (tip), FALSE);
-      gtk_widget_set_name (tip, "gtk-tooltips");
-      gtk_container_set_border_width (GTK_CONTAINER (tip), 4);
 
-      g_signal_connect_swapped (tip, "draw",
-                                G_CALLBACK (draw_handler), NULL);
+      g_signal_connect (tip, "draw", G_CALLBACK (draw_handler), NULL);
 
       label = gtk_label_new (NULL);
       gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
@@ -106,12 +100,17 @@ meta_fixed_tip_show (int screen_number,
       gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
       gtk_widget_show (label);
 
+      gtk_container_set_border_width (GTK_CONTAINER (tip), 4);
       gtk_container_add (GTK_CONTAINER (tip), label);
 
       g_signal_connect (tip, "destroy",
                        G_CALLBACK (gtk_widget_destroyed), &tip);
     }
 
+  mon_num = gdk_screen_get_monitor_at_point (screen, root_x, root_y);
+  gdk_screen_get_monitor_geometry (screen, mon_num, &monitor);
+  screen_right_edge = monitor.x + monitor.width;
+
   gtk_label_set_markup (GTK_LABEL (label), markup_text);
 
   gtk_window_get_size (GTK_WINDOW (tip), &w, &h);