STASH: Epic Experimental patch for toolkit-views App List on Mac

ui/views/cocoa/bridged_native_widget.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_VIEWS_COCOA_BRIDGED_NATIVE_WIDGET_H_
 #define UI_VIEWS_COCOA_BRIDGED_NATIVE_WIDGET_H_
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/mac/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
+#include "ui/compositor/layer_owner.h"
 #import "ui/views/focus/focus_manager.h"
 #include "ui/views/ime/input_method_delegate.h"
 #include "ui/views/views_export.h"
 #include "ui/views/widget/widget.h"
 
+#import "content/browser/compositor/browser_compositor_view_mac.h"
+
 @class BridgedContentView;
 @class ViewsNSWindowDelegate;
 
 namespace ui {
 class InputMethod;
 }
 
 namespace views {
 
 class InputMethod;
 class NativeWidgetMac;
 class View;
 
 // A bridge to an NSWindow managed by an instance of NativeWidgetMac or
 // DesktopNativeWidgetMac. Serves as a helper class to bridge requests from the
 // NativeWidgetMac to the Cocoa window. Behaves a bit like an aura::Window.
-class VIEWS_EXPORT BridgedNativeWidget : public internal::InputMethodDelegate,
-                                         public FocusChangeListener {
+class VIEWS_EXPORT BridgedNativeWidget
+    : public ui::LayerDelegate,
+      public ui::LayerOwner,
+      public internal::InputMethodDelegate,
+      public FocusChangeListener,
+      public content::BrowserCompositorViewMacClient {
  public:
   // Creates one side of the bridge. |parent| must not be NULL.
   explicit BridgedNativeWidget(NativeWidgetMac* parent);
   virtual ~BridgedNativeWidget();
 
   // Initialize the bridge, "retains" ownership of |window|.
   void Init(base::scoped_nsobject<NSWindow> window,
             const Widget::InitParams& params);
 
   // Sets or clears the focus manager to use for tracking focused views.
   // This does NOT take ownership of |focus_manager|.
   void SetFocusManager(FocusManager* focus_manager);
 
+  // Changes the bounds of the window and the hosted layer if present.
+  void SetBounds(const gfx::Rect& new_bounds);
+
   // Set or clears the views::View bridged by the content view. This does NOT
   // take ownership of |view|.
   void SetRootView(views::View* view);
 
   // Called internally by the NSWindowDelegate when the window is closing.
   void OnWindowWillClose();
 
   // Called by the NSWindowDelegate when a fullscreen operation begins. If
   // |target_fullscreen_state| is true, the target state is fullscreen.
   // Otherwise, a transition has begun to come out of fullscreen.
   void OnFullscreenTransitionStart(bool target_fullscreen_state);
 
   // Called when a fullscreen transition completes. If target_fullscreen_state()
   // does not match |actual_fullscreen_state|, a new transition will begin.
   void OnFullscreenTransitionComplete(bool actual_fullscreen_state);
 
   // Transition the window into or out of fullscreen. This will immediately
   // invert the value of target_fullscreen_state().
   void ToggleDesiredFullscreenState();
 
+  // Called by the NSWindowDelegate when the size of the window changes.
+  void OnSizeChanged();
+
+  // Called by the NSWindowDelegate when the visibility of the window may have
+  // changed. For example, due to a (de)miniaturize operation, or the window
+  // being reordered in (or out of) the screen list.
+  void OnVisibilityChanged();
+
+  // Called by the NSWindowDelegate when the window moves to a new display or
+  // when the display properties (backing store scale factor or colorspace
+  // changes.
+  void OnDisplayChanged();
+
   // See widget.h for documentation.
   InputMethod* CreateInputMethod();
   ui::InputMethod* GetHostInputMethod();
 
   // The restored bounds will be derived from the current NSWindow frame unless
   // fullscreen or transitioning between fullscreen states.
   gfx::Rect GetRestoredBounds() const;
 
+  ui::Layer* GetOrCreateLayer();
+
   NativeWidgetMac* native_widget_mac() { return native_widget_mac_; }
   BridgedContentView* ns_view() { return bridged_view_; }
   NSWindow* ns_window() { return window_; }
 
   bool target_fullscreen_state() const { return target_fullscreen_state_; }
 
   // Overridden from internal::InputMethodDelegate:
   virtual void DispatchKeyEventPostIME(const ui::KeyEvent& key) override;
 
+  // Overridden from content::BrowserCompositorViewMacClient:
+  virtual bool BrowserCompositorViewShouldAckImmediately() const OVERRIDE;
+  virtual void BrowserCompositorViewFrameSwapped(
+      const std::vector<ui::LatencyInfo>& latency_info) OVERRIDE;
+  virtual NSView* BrowserCompositorSuperview() OVERRIDE;
+  virtual ui::Layer* BrowserCompositorRootLayer() OVERRIDE;
+
  private:
   // Closes all child windows. BridgedNativeWidget children will be destroyed.
   void RemoveOrDestroyChildren();
 
+  // Size the layer, taking into account display scale factor.
+  void SetLayerSize(const gfx::Size& size_in_dip);
+
+  void OnWindowBoundsChanged();
+
+  // Overridden from ui::LayerDelegate:
+  virtual void OnPaintLayer(gfx::Canvas* canvas) OVERRIDE;
+  virtual void OnDelegatedFrameDamage(
+      const gfx::Rect& damage_rect_in_dip) OVERRIDE;
+  virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
+  virtual base::Closure PrepareForLayerBoundsChange() OVERRIDE;
+
   views::NativeWidgetMac* native_widget_mac_;  // Weak. Owns this.
   base::scoped_nsobject<NSWindow> window_;
   base::scoped_nsobject<ViewsNSWindowDelegate> window_delegate_;
   base::scoped_nsobject<BridgedContentView> bridged_view_;
   scoped_ptr<ui::InputMethod> input_method_;
   FocusManager* focus_manager_;  // Weak. Owned by our Widget.
 
+  base::scoped_nsobject<NSView> compositor_superview_;
+  scoped_ptr<content::BrowserCompositorViewMac> compositor_view_;
+  content::BrowserCompositorViewPlaceholderMac recycling_keepalive_;
+
   // Tracks the bounds when the window last started entering fullscreen. Used to
   // provide an answer for GetRestoredBounds(), but not ever sent to Cocoa (it
   // has its own copy, but doesn't provide access to it).
   gfx::Rect bounds_before_fullscreen_;
 
   // Whether this window wants to be fullscreen. If a fullscreen animation is in
   // progress then it might not be actually fullscreen.
   bool target_fullscreen_state_;
 
   // Whether this window is in a fullscreen transition, and the fullscreen state
   // can not currently be changed.
   bool in_fullscreen_transition_;
 
+  // Stores the value last read from -[NSWindow isVisible], to detect visibility
+  // changes.
+  bool window_visible_;
+
   // Overridden from FocusChangeListener:
   virtual void OnWillChangeFocus(View* focused_before,
                                  View* focused_now) override;
   virtual void OnDidChangeFocus(View* focused_before,
                                 View* focused_now) override;
 
   DISALLOW_COPY_AND_ASSIGN(BridgedNativeWidget);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_COCOA_BRIDGED_NATIVE_WIDGET_H_