ash/wm/caption_buttons/frame_caption_button_container_view.h

   1 // Copyright 2013 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_WM_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_CONTAINER_VIEW_H_
   6 #define ASH_WM_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_CONTAINER_VIEW_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "ui/gfx/image/image_skia.h"
  10 #include "ui/views/controls/button/button.h"
  11 #include "ui/views/view.h"
  12
  13 namespace views {
  14 class CustomButton;
  15 class Widget;
  16 }
  17
  18 namespace ash {
  19
  20 // Container view for the frame caption buttons. It performs the appropriate
  21 // action when a caption button is clicked.
  22 class ASH_EXPORT FrameCaptionButtonContainerView
  23     : public views::View,
  24       public views::ButtonListener {
  25  public:
  26   static const char kViewClassName[];
  27
  28   // Whether the frame can be minimized (either via the maximize/restore button
  29   // or via a dedicated button).
  30   enum MinimizeAllowed {
  31     MINIMIZE_ALLOWED,
  32     MINIMIZE_DISALLOWED
  33   };
  34   enum HeaderStyle {
  35     // Dialogs, panels, packaged apps, tabbed maximized/fullscreen browser
  36     // windows.
  37     HEADER_STYLE_SHORT,
  38
  39     // Restored tabbed browser windows, popups for browser windows, restored
  40     // hosted app windows, popups for hosted app windows.
  41     HEADER_STYLE_TALL,
  42
  43     // AppNonClientFrameViewAsh.
  44     HEADER_STYLE_MAXIMIZED_HOSTED_APP
  45   };
  46
  47   // |frame| is the views::Widget that the caption buttons act on.
  48   // |minimize_allowed| indicates whether the frame can be minimized (either via
  49   // the maximize/restore button or via a dedicated button).
  50   FrameCaptionButtonContainerView(views::Widget* frame,
  51                                   MinimizeAllowed minimize_allowed);
  52   virtual ~FrameCaptionButtonContainerView();
  53
  54   // For testing.
  55   class TestApi {
  56    public:
  57     explicit TestApi(FrameCaptionButtonContainerView* container_view)
  58         : container_view_(container_view) {
  59     }
  60
  61     views::CustomButton* minimize_button() const {
  62       return container_view_->minimize_button_;
  63     }
  64
  65     views::CustomButton* size_button() const {
  66       return container_view_->size_button_;
  67     }
  68
  69     views::CustomButton* close_button() const {
  70       return container_view_->close_button_;
  71     }
  72
  73    private:
  74     FrameCaptionButtonContainerView* container_view_;
  75
  76     DISALLOW_COPY_AND_ASSIGN(TestApi);
  77   };
  78
  79   // Tell the window controls to reset themselves to the normal state.
  80   void ResetWindowControls();
  81
  82   // Determines the window HT* code for the caption button at |point|. Returns
  83   // HTNOWHERE if |point| is not over any of the caption buttons. |point| must
  84   // be in the coordinates of the FrameCaptionButtonContainerView.
  85   int NonClientHitTest(const gfx::Point& point) const;
  86
  87   // Sets the header style.
  88   void set_header_style(HeaderStyle header_style) {
  89     header_style_ = header_style;
  90   }
  91
  92   // views::View overrides:
  93   virtual gfx::Size GetPreferredSize() OVERRIDE;
  94   virtual void Layout() OVERRIDE;
  95   virtual const char* GetClassName() const OVERRIDE;
  96   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
  97
  98  private:
  99   friend class FrameCaptionButtonContainerViewTest;
 100
 101   // Returns the distance between buttons which are next to each other. A
 102   // negative value is returned if the buttons overlap.
 103   int GetDistanceBetweenButtons() const;
 104
 105   // Returns the inset of the leftmost visible button from the view's border
 106   // (if any).
 107   int GetLeftInset() const;
 108
 109   // Returns the inset of the rightmost visible button from the view's border
 110   // (if any).
 111   int GetRightInset() const;
 112
 113   // views::ButtonListener override:
 114   virtual void ButtonPressed(views::Button* sender,
 115                              const ui::Event& event) OVERRIDE;
 116
 117   // Methods specific to normal button style -----------------------------------
 118   //
 119   // Sets the images for a button based on the given ids.
 120   void SetButtonImages(views::CustomButton* button,
 121                        int normal_image_id,
 122                        int hot_image_id,
 123                        int pushed_image_id);
 124
 125   // The widget that the buttons act on.
 126   views::Widget* frame_;
 127
 128   // The close button separator.
 129   gfx::ImageSkia button_separator_;
 130
 131   HeaderStyle header_style_;
 132
 133   // The buttons. In the normal button style, at most one of |minimize_button_|
 134   // and |size_button_| is visible.
 135   views::CustomButton* minimize_button_;
 136   views::CustomButton* size_button_;
 137   views::CustomButton* close_button_;
 138
 139   DISALLOW_COPY_AND_ASSIGN(FrameCaptionButtonContainerView);
 140 };
 141
 142 }  // namesapace ash
 143
 144 #endif  // ASH_WM_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_CONTAINER_VIEW_H_