chrome/browser/ui/views/panels/panel_view.h

   1 // Copyright (c) 2012 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_UI_VIEWS_PANELS_PANEL_VIEW_H_
   6 #define CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_VIEW_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "chrome/browser/ui/panels/native_panel.h"
  10 #include "ui/gfx/animation/animation_delegate.h"
  11 #include "ui/views/widget/widget_delegate.h"
  12 #include "ui/views/widget/widget_observer.h"
  13
  14 #if defined(OS_WIN)
  15 #include "ui/base/win/hwnd_subclass.h"
  16 #endif
  17
  18 class Panel;
  19 class PanelBoundsAnimation;
  20 class PanelFrameView;
  21 class TaskbarWindowThumbnailerWin;
  22
  23 namespace views {
  24 class WebView;
  25 }
  26
  27 class PanelView : public NativePanel,
  28                   public views::WidgetObserver,
  29                   public views::WidgetDelegateView,
  30 #if defined(OS_WIN)
  31                   public ui::HWNDMessageFilter,
  32 #endif
  33                   public gfx::AnimationDelegate {
  34  public:
  35   // The size of inside area used for mouse resizing.
  36   static const int kResizeInsideBoundsSize = 5;
  37
  38   PanelView(Panel* panel, const gfx::Rect& bounds, bool always_on_top);
  39   virtual ~PanelView();
  40
  41   // Overridden from NativePanel:
  42   virtual void ShowPanel() OVERRIDE;
  43   virtual void ShowPanelInactive() OVERRIDE;
  44   virtual gfx::Rect GetPanelBounds() const OVERRIDE;
  45   virtual void SetPanelBounds(const gfx::Rect& bounds) OVERRIDE;
  46   virtual void SetPanelBoundsInstantly(const gfx::Rect& bounds) OVERRIDE;
  47   virtual void ClosePanel() OVERRIDE;
  48   virtual void ActivatePanel() OVERRIDE;
  49   virtual void DeactivatePanel() OVERRIDE;
  50   virtual bool IsPanelActive() const OVERRIDE;
  51   virtual void PreventActivationByOS(bool prevent_activation) OVERRIDE;
  52   virtual gfx::NativeWindow GetNativePanelWindow() OVERRIDE;
  53   virtual void UpdatePanelTitleBar() OVERRIDE;
  54   virtual void UpdatePanelLoadingAnimations(bool should_animate) OVERRIDE;
  55   virtual void PanelWebContentsFocused(content::WebContents* contents) OVERRIDE;
  56   virtual void PanelCut() OVERRIDE;
  57   virtual void PanelCopy() OVERRIDE;
  58   virtual void PanelPaste() OVERRIDE;
  59   virtual void DrawAttention(bool draw_attention) OVERRIDE;
  60   virtual bool IsDrawingAttention() const OVERRIDE;
  61   virtual void HandlePanelKeyboardEvent(
  62       const content::NativeWebKeyboardEvent& event) OVERRIDE;
  63   virtual void FullScreenModeChanged(bool is_full_screen) OVERRIDE;
  64   virtual bool IsPanelAlwaysOnTop() const OVERRIDE;
  65   virtual void SetPanelAlwaysOnTop(bool on_top) OVERRIDE;
  66   virtual void UpdatePanelMinimizeRestoreButtonVisibility() OVERRIDE;
  67   virtual void SetWindowCornerStyle(panel::CornerStyle corner_style) OVERRIDE;
  68   virtual void PanelExpansionStateChanging(
  69       Panel::ExpansionState old_state,
  70       Panel::ExpansionState new_state) OVERRIDE;
  71   virtual void AttachWebContents(content::WebContents* contents) OVERRIDE;
  72   virtual void DetachWebContents(content::WebContents* contents) OVERRIDE;
  73   virtual gfx::Size WindowSizeFromContentSize(
  74       const gfx::Size& content_size) const OVERRIDE;
  75   virtual gfx::Size ContentSizeFromWindowSize(
  76       const gfx::Size& window_size) const OVERRIDE;
  77   virtual int TitleOnlyHeight() const OVERRIDE;
  78   virtual void MinimizePanelBySystem() OVERRIDE;
  79   virtual bool IsPanelMinimizedBySystem() const OVERRIDE;
  80   virtual bool IsPanelShownOnActiveDesktop() const OVERRIDE;
  81   virtual void ShowShadow(bool show) OVERRIDE;
  82   virtual NativePanelTesting* CreateNativePanelTesting() OVERRIDE;
  83
  84   // Overridden from views::View:
  85   virtual gfx::Size GetMinimumSize() OVERRIDE;
  86   virtual gfx::Size GetMaximumSize() OVERRIDE;
  87
  88   // Return true if the mouse event is handled.
  89   // |mouse_location| is in screen coordinate system.
  90   bool OnTitlebarMousePressed(const gfx::Point& mouse_location);
  91   bool OnTitlebarMouseDragged(const gfx::Point& mouse_location);
  92   bool OnTitlebarMouseReleased(panel::ClickModifier modifier);
  93   bool OnTitlebarMouseCaptureLost();
  94
  95   PanelFrameView* GetFrameView() const;
  96   bool IsAnimatingBounds() const;
  97
  98   // The panel does not show a resizing border. Instead, the inner content area
  99   // can be used to trigger the mouse resizing. Return true if |mouse_location|
 100   // falls within this area.
 101   // |mouse_location| is in screen coordinate system.
 102   bool IsWithinResizingArea(const gfx::Point& mouse_location) const;
 103
 104   Panel* panel() const { return panel_.get(); }
 105   views::Widget* window() const { return window_; }
 106   bool force_to_paint_as_inactive() const {
 107     return force_to_paint_as_inactive_;
 108   }
 109
 110   // PanelStackView might want to update the stored bounds directly since it
 111   // has already taken care of updating the window bounds directly.
 112   void set_cached_bounds_directly(const gfx::Rect& bounds) { bounds_ = bounds; }
 113
 114  private:
 115   enum MouseDraggingState {
 116     NO_DRAGGING,
 117     DRAGGING_STARTED,
 118     DRAGGING_ENDED
 119   };
 120
 121   // Overridden from views::WidgetDelegate:
 122   virtual void OnDisplayChanged() OVERRIDE;
 123   virtual void OnWorkAreaChanged() OVERRIDE;
 124   virtual bool WillProcessWorkAreaChange() const OVERRIDE;
 125   virtual views::View* GetContentsView() OVERRIDE;
 126   virtual views::NonClientFrameView* CreateNonClientFrameView(
 127       views::Widget* widget) OVERRIDE;
 128   virtual bool CanResize() const OVERRIDE;
 129   virtual bool CanMaximize() const OVERRIDE;
 130   virtual views::Widget* GetWidget() OVERRIDE;
 131   virtual const views::Widget* GetWidget() const OVERRIDE;
 132   virtual base::string16 GetWindowTitle() const OVERRIDE;
 133   virtual gfx::ImageSkia GetWindowAppIcon() OVERRIDE;
 134   virtual gfx::ImageSkia GetWindowIcon() OVERRIDE;
 135   virtual void WindowClosing() OVERRIDE;
 136   virtual void DeleteDelegate() OVERRIDE;
 137   virtual void OnWindowBeginUserBoundsChange() OVERRIDE;
 138   virtual void OnWindowEndUserBoundsChange() OVERRIDE;
 139
 140   // Overridden from views::View:
 141   virtual void Layout() OVERRIDE;
 142   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
 143
 144   // Overridden from views::WidgetObserver:
 145   virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE;
 146   virtual void OnWidgetActivationChanged(views::Widget* widget,
 147                                          bool active) OVERRIDE;
 148   virtual void OnWidgetBoundsChanged(views::Widget* widget,
 149                                      const gfx::Rect& new_bounds) OVERRIDE;
 150
 151   // Overridden from ui::HWNDMessageFilter:
 152 #if defined(OS_WIN)
 153   virtual bool FilterMessage(HWND hwnd,
 154                              UINT message,
 155                              WPARAM w_param,
 156                              LPARAM l_param,
 157                              LRESULT* l_result) OVERRIDE;
 158 #endif
 159
 160   // Overridden from AnimationDelegate:
 161   virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE;
 162   virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
 163
 164   void UpdateLoadingAnimations(bool should_animate);
 165   void UpdateWindowTitle();
 166   void UpdateWindowIcon();
 167   void SetBoundsInternal(const gfx::Rect& bounds, bool animate);
 168   bool EndDragging(bool cancelled);
 169
 170   // Sets the bounds of the underlying window to |new_bounds|. Note that this
 171   // might update the window style to work around the minimum overlapped
 172   // window height limitation.
 173   void SetWidgetBounds(const gfx::Rect& new_bounds);
 174
 175 #if defined(OS_WIN)
 176   // Sets |attribute_value_to_set| and/or clears |attribute_value_to_reset| for
 177   // the attibute denoted by |attribute_index|. This is used to update the style
 178   // or extended style for the native window.
 179   void UpdateWindowAttribute(int attribute_index,
 180                              int attribute_value_to_set,
 181                              int attribute_value_to_reset,
 182                              bool update_frame);
 183 #endif
 184
 185   scoped_ptr<Panel> panel_;
 186   gfx::Rect bounds_;
 187
 188   // The window that holds all panel views. Lifetime managed by native widget.
 189   // See widget.h.
 190   views::Widget* window_;
 191
 192   // Close gets called more than once, so use this to do one-time clean up once.
 193   bool window_closed_;
 194
 195   // The view hosting the web contents. Will be destroyed when child views
 196   // of this class are destroyed.
 197   views::WebView* web_view_;
 198
 199   // True if the panel should always stay on top of other windows.
 200   bool always_on_top_;
 201
 202   // Is the panel receiving the focus?
 203   bool focused_;
 204
 205   // True if the user is resizing the panel.
 206   bool user_resizing_;
 207
 208 #if defined(OS_WIN)
 209   // True if the user is resizing the interior edge of a stack.
 210   bool user_resizing_interior_stacked_panel_edge_;
 211
 212   // The original full size of the resizing panel before the resizing states.
 213   gfx::Size original_full_size_of_resizing_panel_;
 214
 215   // The original full size of the panel below the resizing panel before the
 216   // resizing starts.
 217   gfx::Size original_full_size_of_panel_below_resizing_panel_;
 218 #endif
 219
 220
 221   // Is the mouse button currently down?
 222   bool mouse_pressed_;
 223
 224   // Location the mouse was pressed at or dragged to last time when we process
 225   // the mouse event. Used in drag-and-drop.
 226   // This point is represented in the screen coordinate system.
 227   gfx::Point last_mouse_location_;
 228
 229   // Is the titlebar currently being dragged?  That is, has the cursor
 230   // moved more than kDragThreshold away from its starting position?
 231   MouseDraggingState mouse_dragging_state_;
 232
 233   // Used to animate the bounds change.
 234   scoped_ptr<PanelBoundsAnimation> bounds_animator_;
 235   gfx::Rect animation_start_bounds_;
 236
 237   // Is the panel in highlighted state to draw people's attention?
 238   bool is_drawing_attention_;
 239
 240   // Should we force to paint the panel as inactive? This is needed when we need
 241   // to capture the screenshot before an active panel goes minimized.
 242   bool force_to_paint_as_inactive_;
 243
 244   // The last view that had focus in the panel. This is saved so that focus can
 245   // be restored properly when a drag ends.
 246   views::View* old_focused_view_;
 247
 248 #if defined(OS_WIN)
 249   // Used to provide custom taskbar thumbnail for Windows 7 and later.
 250   scoped_ptr<TaskbarWindowThumbnailerWin> thumbnailer_;
 251 #endif
 252
 253   DISALLOW_COPY_AND_ASSIGN(PanelView);
 254 };
 255
 256 #endif  // CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_VIEW_H_