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 AutoKeepAlive;
  19 class Panel;
  20 class PanelBoundsAnimation;
  21 class PanelFrameView;
  22 class TaskbarWindowThumbnailerWin;
  23
  24 namespace views {
  25 class WebView;
  26 }
  27
  28 class PanelView : public NativePanel,
  29                   public views::WidgetObserver,
  30                   public views::WidgetDelegateView,
  31 #if defined(OS_WIN)
  32                   public ui::HWNDMessageFilter,
  33 #endif
  34                   public gfx::AnimationDelegate {
  35  public:
  36   // The size of inside area used for mouse resizing.
  37   static const int kResizeInsideBoundsSize = 5;
  38
  39   PanelView(Panel* panel, const gfx::Rect& bounds, bool always_on_top);
  40   virtual ~PanelView();
  41
  42   // Overridden from NativePanel:
  43   virtual void ShowPanel() OVERRIDE;
  44   virtual void ShowPanelInactive() OVERRIDE;
  45   virtual gfx::Rect GetPanelBounds() const OVERRIDE;
  46   virtual void SetPanelBounds(const gfx::Rect& bounds) OVERRIDE;
  47   virtual void SetPanelBoundsInstantly(const gfx::Rect& bounds) OVERRIDE;
  48   virtual void ClosePanel() OVERRIDE;
  49   virtual void ActivatePanel() OVERRIDE;
  50   virtual void DeactivatePanel() OVERRIDE;
  51   virtual bool IsPanelActive() const OVERRIDE;
  52   virtual void PreventActivationByOS(bool prevent_activation) OVERRIDE;
  53   virtual gfx::NativeWindow GetNativePanelWindow() OVERRIDE;
  54   virtual void UpdatePanelTitleBar() OVERRIDE;
  55   virtual void UpdatePanelLoadingAnimations(bool should_animate) OVERRIDE;
  56   virtual void PanelWebContentsFocused(content::WebContents* contents) OVERRIDE;
  57   virtual void PanelCut() OVERRIDE;
  58   virtual void PanelCopy() OVERRIDE;
  59   virtual void PanelPaste() OVERRIDE;
  60   virtual void DrawAttention(bool draw_attention) OVERRIDE;
  61   virtual bool IsDrawingAttention() const OVERRIDE;
  62   virtual void HandlePanelKeyboardEvent(
  63       const content::NativeWebKeyboardEvent& event) OVERRIDE;
  64   virtual void FullScreenModeChanged(bool is_full_screen) OVERRIDE;
  65   virtual bool IsPanelAlwaysOnTop() const OVERRIDE;
  66   virtual void SetPanelAlwaysOnTop(bool on_top) OVERRIDE;
  67   virtual void UpdatePanelMinimizeRestoreButtonVisibility() OVERRIDE;
  68   virtual void SetWindowCornerStyle(panel::CornerStyle corner_style) OVERRIDE;
  69   virtual void PanelExpansionStateChanging(
  70       Panel::ExpansionState old_state,
  71       Panel::ExpansionState new_state) OVERRIDE;
  72   virtual void AttachWebContents(content::WebContents* contents) OVERRIDE;
  73   virtual void DetachWebContents(content::WebContents* contents) OVERRIDE;
  74   virtual gfx::Size WindowSizeFromContentSize(
  75       const gfx::Size& content_size) const OVERRIDE;
  76   virtual gfx::Size ContentSizeFromWindowSize(
  77       const gfx::Size& window_size) const OVERRIDE;
  78   virtual int TitleOnlyHeight() const OVERRIDE;
  79   virtual void MinimizePanelBySystem() OVERRIDE;
  80   virtual bool IsPanelMinimizedBySystem() const OVERRIDE;
  81   virtual bool IsPanelShownOnActiveDesktop() const OVERRIDE;
  82   virtual void ShowShadow(bool show) OVERRIDE;
  83   virtual NativePanelTesting* CreateNativePanelTesting() OVERRIDE;
  84
  85   // Overridden from views::View:
  86   virtual gfx::Size GetMinimumSize() const OVERRIDE;
  87   virtual gfx::Size GetMaximumSize() OVERRIDE;
  88
  89   // Return true if the mouse event is handled.
  90   // |mouse_location| is in screen coordinate system.
  91   bool OnTitlebarMousePressed(const gfx::Point& mouse_location);
  92   bool OnTitlebarMouseDragged(const gfx::Point& mouse_location);
  93   bool OnTitlebarMouseReleased(panel::ClickModifier modifier);
  94   bool OnTitlebarMouseCaptureLost();
  95
  96   PanelFrameView* GetFrameView() const;
  97   bool IsAnimatingBounds() const;
  98
  99   // The panel does not show a resizing border. Instead, the inner content area
 100   // can be used to trigger the mouse resizing. Return true if |mouse_location|
 101   // falls within this area.
 102   // |mouse_location| is in screen coordinate system.
 103   bool IsWithinResizingArea(const gfx::Point& mouse_location) const;
 104
 105   Panel* panel() const { return panel_.get(); }
 106   views::Widget* window() const { return window_; }
 107   bool force_to_paint_as_inactive() const {
 108     return force_to_paint_as_inactive_;
 109   }
 110
 111   // PanelStackView might want to update the stored bounds directly since it
 112   // has already taken care of updating the window bounds directly.
 113   void set_cached_bounds_directly(const gfx::Rect& bounds) { bounds_ = bounds; }
 114
 115  private:
 116   enum MouseDraggingState {
 117     NO_DRAGGING,
 118     DRAGGING_STARTED,
 119     DRAGGING_ENDED
 120   };
 121
 122   // Overridden from views::WidgetDelegate:
 123   virtual void OnDisplayChanged() OVERRIDE;
 124   virtual void OnWorkAreaChanged() OVERRIDE;
 125   virtual bool WillProcessWorkAreaChange() const OVERRIDE;
 126   virtual views::View* GetContentsView() OVERRIDE;
 127   virtual views::NonClientFrameView* CreateNonClientFrameView(
 128       views::Widget* widget) OVERRIDE;
 129   virtual bool CanResize() const OVERRIDE;
 130   virtual bool CanMaximize() const OVERRIDE;
 131   virtual views::Widget* GetWidget() OVERRIDE;
 132   virtual const views::Widget* GetWidget() const OVERRIDE;
 133   virtual base::string16 GetWindowTitle() const OVERRIDE;
 134   virtual gfx::ImageSkia GetWindowAppIcon() OVERRIDE;
 135   virtual gfx::ImageSkia GetWindowIcon() OVERRIDE;
 136   virtual void WindowClosing() OVERRIDE;
 137   virtual void DeleteDelegate() OVERRIDE;
 138   virtual void OnWindowBeginUserBoundsChange() OVERRIDE;
 139   virtual void OnWindowEndUserBoundsChange() OVERRIDE;
 140
 141   // Overridden from views::View:
 142   virtual void Layout() OVERRIDE;
 143   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
 144
 145   // Overridden from views::WidgetObserver:
 146   virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE;
 147   virtual void OnWidgetActivationChanged(views::Widget* widget,
 148                                          bool active) OVERRIDE;
 149   virtual void OnWidgetBoundsChanged(views::Widget* widget,
 150                                      const gfx::Rect& new_bounds) OVERRIDE;
 151
 152   // Overridden from ui::HWNDMessageFilter:
 153 #if defined(OS_WIN)
 154   virtual bool FilterMessage(HWND hwnd,
 155                              UINT message,
 156                              WPARAM w_param,
 157                              LPARAM l_param,
 158                              LRESULT* l_result) OVERRIDE;
 159 #endif
 160
 161   // Overridden from AnimationDelegate:
 162   virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE;
 163   virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
 164
 165   void UpdateLoadingAnimations(bool should_animate);
 166   void UpdateWindowTitle();
 167   void UpdateWindowIcon();
 168   void SetBoundsInternal(const gfx::Rect& bounds, bool animate);
 169   bool EndDragging(bool cancelled);
 170
 171   // Sets the bounds of the underlying window to |new_bounds|. Note that this
 172   // might update the window style to work around the minimum overlapped
 173   // window height limitation.
 174   void SetWidgetBounds(const gfx::Rect& new_bounds);
 175
 176 #if defined(OS_WIN)
 177   // Sets |attribute_value_to_set| and/or clears |attribute_value_to_reset| for
 178   // the attibute denoted by |attribute_index|. This is used to update the style
 179   // or extended style for the native window.
 180   void UpdateWindowAttribute(int attribute_index,
 181                              int attribute_value_to_set,
 182                              int attribute_value_to_reset,
 183                              bool update_frame);
 184 #endif
 185
 186   scoped_ptr<Panel> panel_;
 187   gfx::Rect bounds_;
 188
 189   // The window that holds all panel views. Lifetime managed by native widget.
 190   // See widget.h.
 191   views::Widget* window_;
 192
 193   // Close gets called more than once, so use this to do one-time clean up once.
 194   bool window_closed_;
 195
 196   // The view hosting the web contents. Will be destroyed when child views
 197   // of this class are destroyed.
 198   views::WebView* web_view_;
 199
 200   // True if the panel should always stay on top of other windows.
 201   bool always_on_top_;
 202
 203   // Is the panel receiving the focus?
 204   bool focused_;
 205
 206   // True if the user is resizing the panel.
 207   bool user_resizing_;
 208
 209 #if defined(OS_WIN)
 210   // True if the user is resizing the interior edge of a stack.
 211   bool user_resizing_interior_stacked_panel_edge_;
 212
 213   // The original full size of the resizing panel before the resizing states.
 214   gfx::Size original_full_size_of_resizing_panel_;
 215
 216   // The original full size of the panel below the resizing panel before the
 217   // resizing starts.
 218   gfx::Size original_full_size_of_panel_below_resizing_panel_;
 219 #endif
 220
 221
 222   // Is the mouse button currently down?
 223   bool mouse_pressed_;
 224
 225   // Location the mouse was pressed at or dragged to last time when we process
 226   // the mouse event. Used in drag-and-drop.
 227   // This point is represented in the screen coordinate system.
 228   gfx::Point last_mouse_location_;
 229
 230   // Is the titlebar currently being dragged?  That is, has the cursor
 231   // moved more than kDragThreshold away from its starting position?
 232   MouseDraggingState mouse_dragging_state_;
 233
 234   // Used to animate the bounds change.
 235   scoped_ptr<PanelBoundsAnimation> bounds_animator_;
 236   gfx::Rect animation_start_bounds_;
 237
 238   // Is the panel in highlighted state to draw people's attention?
 239   bool is_drawing_attention_;
 240
 241   // Should we force to paint the panel as inactive? This is needed when we need
 242   // to capture the screenshot before an active panel goes minimized.
 243   bool force_to_paint_as_inactive_;
 244
 245   // The last view that had focus in the panel. This is saved so that focus can
 246   // be restored properly when a drag ends.
 247   views::View* old_focused_view_;
 248
 249   scoped_ptr<AutoKeepAlive> keep_alive_;
 250
 251 #if defined(OS_WIN)
 252   // Used to provide custom taskbar thumbnail for Windows 7 and later.
 253   scoped_ptr<TaskbarWindowThumbnailerWin> thumbnailer_;
 254 #endif
 255
 256   DISALLOW_COPY_AND_ASSIGN(PanelView);
 257 };
 258
 259 #endif  // CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_VIEW_H_