chrome/browser/ui/gtk/rounded_window.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_GTK_ROUNDED_WINDOW_H_
   6 #define CHROME_BROWSER_UI_GTK_ROUNDED_WINDOW_H_
   7
   8 #include <gtk/gtk.h>
   9
  10 namespace gtk_util {
  11
  12 // Symbolic names for arguments to |rounded_edges| in ActAsRoundedWindow().
  13 enum RoundedBorders {
  14   ROUNDED_NONE = 0,
  15   ROUNDED_BOTTOM_LEFT = 1 << 0,
  16   ROUNDED_TOP_LEFT = 1 << 1,
  17   ROUNDED_TOP_RIGHT = 1 << 2,
  18   ROUNDED_TOP = (1 << 1) | (1 << 2),
  19   ROUNDED_BOTTOM_RIGHT = 1 << 3,
  20   ROUNDED_ALL = 0xF
  21 };
  22
  23 // Symbolic names for arguments to |drawn_borders| in ActAsRoundedWindow().
  24 enum BorderEdge {
  25   BORDER_NONE = 0,
  26   BORDER_LEFT = 1 << 0,
  27   BORDER_TOP = 1 << 1,
  28   BORDER_RIGHT = 1 << 2,
  29   BORDER_BOTTOM = 1 << 3,
  30   BORDER_ALL = 0xF
  31 };
  32
  33 // Sets up the passed in widget that has its own GdkWindow with an expose
  34 // handler that forces the window shape into roundness. Caller should not set
  35 // an "expose-event" handler on |widget|; if caller needs to do custom
  36 // rendering, use SetRoundedWindowExposeFunction() instead. |rounded_edges|
  37 // control which corners are rounded. |drawn_borders| border control which
  38 // sides have a visible border drawn in |color|.
  39 void ActAsRoundedWindow(
  40     GtkWidget* widget, const GdkColor& color, int corner_size,
  41     int rounded_edges, int drawn_borders);
  42
  43 // Undoes most of the actions of ActAsRoundedWindow().
  44 void StopActingAsRoundedWindow(GtkWidget* widget);
  45
  46 // Returns true if the window is rounded.
  47 bool IsActingAsRoundedWindow(GtkWidget* widget);
  48
  49 // Sets edge and border properties on a widget that has already been configured
  50 // with ActAsRoundedWindow().
  51 void SetRoundedWindowEdgesAndBorders(GtkWidget* widget,
  52                                      int corner_size,
  53                                      int rounded_edges,
  54                                      int drawn_borders);
  55
  56 // Sets the color of the border on a widget that has already been configured
  57 // with ActAsRoundedWindow().
  58 void SetRoundedWindowBorderColor(GtkWidget* widget, GdkColor color);
  59
  60
  61 }  // namespace gtk_util
  62
  63 #endif  // CHROME_BROWSER_UI_GTK_ROUNDED_WINDOW_H_