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1 // Copyright (c) 2010 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_CHROMEOS_DROP_SHADOW_LABEL_H_
6 #define CHROME_BROWSER_CHROMEOS_DROP_SHADOW_LABEL_H_
7 #pragma once
8 
9 #include "ui/gfx/font.h"
10 #include "views/controls/label.h"
11 
12 namespace chromeos {
13 
14 /////////////////////////////////////////////////////////////////////////////
15 //
16 // DropShadowLabel class
17 //
18 // A drop shadow label is a view subclass that can display a string
19 // with a drop shadow.
20 //
21 /////////////////////////////////////////////////////////////////////////////
22 class DropShadowLabel : public views::Label  {
23  public:
24   DropShadowLabel();
25 
26   // Sets the size of the drop shadow drawn under the text.
27   // Defaults to two.  Note that this is a really simplistic drop
28   // shadow -- it gets more expensive to draw the larger it gets,
29   // since it simply draws more copies of the string.  For instance,
30   // for a value of two, the string is draw seven times.  In general,
31   // it is drawn three extra times for each increment of |size|.
32   void SetDropShadowSize(int size);
33 
34   // Return the size of the drop shadow in pixels.
drop_shadow_size()35   int drop_shadow_size() const { return drop_shadow_size_; }
36 
37   // Overridden to paint the text differently from the base class.
38   virtual void PaintText(gfx::Canvas* canvas,
39                          const std::wstring& text,
40                          const gfx::Rect& text_bounds,
41                          int flags);
42 
43  protected:
44   virtual gfx::Size GetTextSize() const;
45 
46  private:
47   void Init();
48 
49   int drop_shadow_size_;
50 
51   DISALLOW_COPY_AND_ASSIGN(DropShadowLabel);
52 };
53 
54 }  // namespace chromeos
55 
56 #endif  // CHROME_BROWSER_CHROMEOS_DROP_SHADOW_LABEL_H_
57