text: // Copyright (c) 2010 The Chromium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  #ifndef CHROME_BROWSER_GTK_ROUNDED_WINDOW_H_
  #define CHROME_BROWSER_GTK_ROUNDED_WINDOW_H_
  #pragma once
  
  #include <gtk/gtk.h>
  
  namespace gtk_util {
  
  // Symbolic names for arguments to |rounded_edges| in ActAsRoundedWindow().
  enum RoundedBorders {
    ROUNDED_NONE = 0,
    ROUNDED_BOTTOM_LEFT = 1 << 0,
    ROUNDED_TOP_LEFT = 1 << 1,
    ROUNDED_TOP_RIGHT = 1 << 2,
    ROUNDED_TOP = (1 << 1) | (1 << 2),
    ROUNDED_BOTTOM_RIGHT = 1 << 3,
    ROUNDED_ALL = 0xF
  };
  
  // Symbolic names for arguments to |drawn_borders| in ActAsRoundedWindow().
  enum BorderEdge {
    BORDER_NONE = 0,
    BORDER_LEFT = 1 << 0,
    BORDER_TOP = 1 << 1,
    BORDER_RIGHT = 1 << 2,
    BORDER_BOTTOM = 1 << 3,
    BORDER_ALL = 0xF
  };
  
  // Sets up the passed in widget that has its own GdkWindow with an expose
  // handler that forces the window shape into roundness. Caller should not set
  // an "expose-event" handler on |widget|; if caller needs to do custom
  // rendering, use SetRoundedWindowExposeFunction() instead. |rounded_edges|
  // control which corners are rounded. |drawn_borders| border control which
  // sides have a visible border drawn in |color|.
  void ActAsRoundedWindow(
      GtkWidget* widget, const GdkColor& color, int corner_size,
      int rounded_edges, int drawn_borders);
  
  // Undoes most of the actions of ActAsRoundedWindow().
  void StopActingAsRoundedWindow(GtkWidget* widget);
  
  // Returns true if the window is rounded.
  bool IsActingAsRoundedWindow(GtkWidget* widget);
  
  // Sets edge and border properties on a widget that has already been configured
  // with ActAsRoundedWindow().
  void SetRoundedWindowEdgesAndBorders(GtkWidget* widget,
                                       int corner_size,
                                       int rounded_edges,
                                       int drawn_borders);
  
  // Sets the color of the border on a widget that has already been configured
  // with ActAsRoundedWindow().
  void SetRoundedWindowBorderColor(GtkWidget* widget, GdkColor color);
  
  
  }  // namespace gtk_util
  
  #endif  // CHROME_BROWSER_GTK_ROUNDED_WINDOW_H_
  