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 "third_party/skia/include/core/SkColor.h"
  15 #include "ui/gfx/animation/animation_delegate.h"
  16
  17 namespace gfx {
  18 class ImageSkia;
  19 class Rect;
  20 class SlideAnimation;
  21 }
  22 namespace views {
  23 class View;
  24 class Widget;
  25 }
  26
  27 namespace ash {
  28 class FrameCaptionButtonContainerView;
  29
  30 // Helper class for painting the default window header.
  31 class ASH_EXPORT DefaultHeaderPainter : public HeaderPainter,
  32                                         public gfx::AnimationDelegate {
  33  public:
  34   DefaultHeaderPainter();
  35   virtual ~DefaultHeaderPainter();
  36
  37   // DefaultHeaderPainter does not take ownership of any of the parameters.
  38   void Init(views::Widget* frame,
  39             views::View* header_view,
  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   virtual void UpdateLeftViewXInset(int left_view_x_inset) OVERRIDE;
  50
  51   // Sets the left header view for the header. Passing NULL removes the view.
  52   void UpdateLeftHeaderView(views::View* left_header_view);
  53
  54  private:
  55   FRIEND_TEST_ALL_PREFIXES(DefaultHeaderPainterTest, TitleIconAlignment);
  56
  57   // gfx::AnimationDelegate override:
  58   virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
  59
  60   // Paints highlight around the edge of the header for inactive restored
  61   // windows.
  62   void PaintHighlightForInactiveRestoredWindow(gfx::Canvas* canvas);
  63
  64   // Paints the title bar, primarily the title string.
  65   void PaintTitleBar(gfx::Canvas* canvas);
  66
  67   // Paints the header/content separator.
  68   void PaintHeaderContentSeparator(gfx::Canvas* canvas);
  69
  70   // Layout the left header view.
  71   void LayoutLeftHeaderView();
  72
  73   // Updates the size button's images.
  74   void UpdateSizeButtonImages();
  75
  76   // Returns the header bounds in the coordinates of |view_|. The header is
  77   // assumed to be positioned at the top left corner of |view_| and to have the
  78   // same width as |view_|.
  79   gfx::Rect GetLocalBounds() const;
  80
  81   // Returns the bounds for the title.
  82   gfx::Rect GetTitleBounds() const;
  83
  84   // Returns the frame color to use when |frame_| is inactive.
  85   SkColor GetInactiveFrameColor() const;
  86
  87   views::Widget* frame_;
  88   views::View* view_;
  89   views::View* left_header_view_;  // May be NULL.
  90   int left_view_x_inset_;
  91   FrameCaptionButtonContainerView* caption_button_container_;
  92
  93   // The height of the header including the header/content separator.
  94   int height_;
  95
  96   // Whether the header should be painted as active.
  97   Mode mode_;
  98
  99   // Whether the header is painted for the first time.
 100   bool initial_paint_;
 101
 102   scoped_ptr<gfx::SlideAnimation> activation_animation_;
 103
 104   DISALLOW_COPY_AND_ASSIGN(DefaultHeaderPainter);
 105 };
 106
 107 }  // namespace ash
 108
 109 #endif  // ASH_FRAME_DEFAULT_HEADER_PAINTER_H_