chrome/browser/chromeos/drop_shadow_label.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_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 "ui/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.
  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 string16& text,
  40                          const gfx::Rect& text_bounds,
  41                          int flags) OVERRIDE;
  42
  43  protected:
  44   virtual gfx::Size GetTextSize() const OVERRIDE;
  45
  46  private:
  47   int drop_shadow_size_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(DropShadowLabel);
  50 };
  51
  52 }  // namespace chromeos
  53
  54 #endif  // CHROME_BROWSER_CHROMEOS_DROP_SHADOW_LABEL_H_