ash/frame/default_header_painter.h

   1 // Copyright 2014 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 ASH_FRAME_DEFAULT_HEADER_PAINTER_H_
   6 #define ASH_FRAME_DEFAULT_HEADER_PAINTER_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "ash/frame/header_painter.h"
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"  // OVERRIDE
  12 #include "base/gtest_prod_util.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "ui/gfx/animation/animation_delegate.h"
  15
  16 namespace gfx {
  17 class ImageSkia;
  18 class Rect;
  19 class SlideAnimation;
  20 }
  21 namespace views {
  22 class View;
  23 class Widget;
  24 }
  25
  26 namespace ash {
  27 class FrameCaptionButtonContainerView;
  28
  29 // Helper class for painting the default window header.
  30 class ASH_EXPORT DefaultHeaderPainter : public HeaderPainter,
  31                                         public gfx::AnimationDelegate {
  32  public:
  33   DefaultHeaderPainter();
  34   virtual ~DefaultHeaderPainter();
  35
  36   // DefaultHeaderPainter does not take ownership of any of the parameters.
  37   void Init(views::Widget* frame,
  38             views::View* header_view,
  39             views::View* window_icon,
  40             FrameCaptionButtonContainerView* caption_button_container);
  41
  42   // HeaderPainter overrides:
  43   virtual int GetMinimumHeaderWidth() const OVERRIDE;
  44   virtual void PaintHeader(gfx::Canvas* canvas, Mode mode) OVERRIDE;
  45   virtual void LayoutHeader() OVERRIDE;
  46   virtual int GetHeaderHeightForPainting() const OVERRIDE;
  47   virtual void SetHeaderHeightForPainting(int height) OVERRIDE;
  48   virtual void SchedulePaintForTitle() OVERRIDE;
  49
  50   // Sets the window icon for the header. Passing NULL removes the window icon.
  51   void UpdateWindowIcon(views::View* window_icon, int icon_size);
  52
  53  private:
  54   FRIEND_TEST_ALL_PREFIXES(DefaultHeaderPainterTest, TitleIconAlignment);
  55
  56   // gfx::AnimationDelegate override:
  57   virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
  58
  59   // Paints highlight around the edge of the header for inactive restored
  60   // windows.
  61   void PaintHighlightForInactiveRestoredWindow(gfx::Canvas* canvas);
  62
  63   // Paints the title bar, primarily the title string.
  64   void PaintTitleBar(gfx::Canvas* canvas);
  65
  66   // Paints the header/content separator.
  67   void PaintHeaderContentSeparator(gfx::Canvas* canvas);
  68
  69   // Returns the header bounds in the coordinates of |view_|. The header is
  70   // assumed to be positioned at the top left corner of |view_| and to have the
  71   // same width as |view_|.
  72   gfx::Rect GetLocalBounds() const;
  73
  74   // Returns the bounds for the title.
  75   gfx::Rect GetTitleBounds() const;
  76
  77   // Returns the frame image to use when |frame_| is active.
  78   gfx::ImageSkia* GetActiveFrameImage() const;
  79
  80   // Returns the frame image to use when |frame_| is inactive.
  81   gfx::ImageSkia* GetInactiveFrameImage() const;
  82
  83   views::Widget* frame_;
  84   views::View* view_;
  85   views::View* window_icon_;  // May be NULL.
  86   int window_icon_size_;
  87   FrameCaptionButtonContainerView* caption_button_container_;
  88
  89   // The height of the header including the header/content separator.
  90   int height_;
  91
  92   // Whether the header should be painted as active.
  93   Mode mode_;
  94
  95   // Whether the header is painted for the first time.
  96   bool initial_paint_;
  97
  98   scoped_ptr<gfx::SlideAnimation> activation_animation_;
  99
 100   DISALLOW_COPY_AND_ASSIGN(DefaultHeaderPainter);
 101 };
 102
 103 }  // namespace ash
 104
 105 #endif  // ASH_FRAME_DEFAULT_HEADER_PAINTER_H_