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      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_
     64