content/browser/renderer_host/render_widget_host_view_android.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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
   7
   8 #include <map>
   9 #include <queue>
  10
  11 #include "base/callback.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/i18n/rtl.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/memory/weak_ptr.h"
  16 #include "base/process/process.h"
  17 #include "cc/layers/delegated_frame_resource_collection.h"
  18 #include "cc/layers/texture_layer_client.h"
  19 #include "cc/output/begin_frame_args.h"
  20 #include "content/browser/accessibility/browser_accessibility_manager.h"
  21 #include "content/browser/renderer_host/delegated_frame_evictor.h"
  22 #include "content/browser/renderer_host/image_transport_factory_android.h"
  23 #include "content/browser/renderer_host/ime_adapter_android.h"
  24 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  25 #include "gpu/command_buffer/common/mailbox.h"
  26 #include "third_party/skia/include/core/SkColor.h"
  27 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
  28 #include "ui/base/android/window_android_observer.h"
  29 #include "ui/gfx/size.h"
  30 #include "ui/gfx/vector2d_f.h"
  31
  32 struct ViewHostMsg_TextInputState_Params;
  33
  34 struct GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params;
  35 struct GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params;
  36
  37 namespace cc {
  38 class CopyOutputResult;
  39 class DelegatedFrameProvider;
  40 class DelegatedRendererLayer;
  41 class Layer;
  42 class SingleReleaseCallback;
  43 class TextureLayer;
  44 }
  45
  46 namespace blink {
  47 class WebExternalTextureLayer;
  48 class WebTouchEvent;
  49 class WebMouseEvent;
  50 }
  51
  52 namespace content {
  53 class ContentViewCoreImpl;
  54 class OverscrollGlow;
  55 class RenderWidgetHost;
  56 class RenderWidgetHostImpl;
  57 struct NativeWebKeyboardEvent;
  58
  59 // -----------------------------------------------------------------------------
  60 // See comments in render_widget_host_view.h about this class and its members.
  61 // -----------------------------------------------------------------------------
  62 class RenderWidgetHostViewAndroid
  63     : public RenderWidgetHostViewBase,
  64       public BrowserAccessibilityDelegate,
  65       public cc::DelegatedFrameResourceCollectionClient,
  66       public ImageTransportFactoryAndroidObserver,
  67       public ui::WindowAndroidObserver,
  68       public DelegatedFrameEvictorClient {
  69  public:
  70   RenderWidgetHostViewAndroid(RenderWidgetHostImpl* widget,
  71                               ContentViewCoreImpl* content_view_core);
  72   virtual ~RenderWidgetHostViewAndroid();
  73
  74   // RenderWidgetHostView implementation.
  75   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
  76   virtual void InitAsChild(gfx::NativeView parent_view) OVERRIDE;
  77   virtual void InitAsPopup(RenderWidgetHostView* parent_host_view,
  78                            const gfx::Rect& pos) OVERRIDE;
  79   virtual void InitAsFullscreen(
  80       RenderWidgetHostView* reference_host_view) OVERRIDE;
  81   virtual RenderWidgetHost* GetRenderWidgetHost() const OVERRIDE;
  82   virtual void WasShown() OVERRIDE;
  83   virtual void WasHidden() OVERRIDE;
  84   virtual void SetSize(const gfx::Size& size) OVERRIDE;
  85   virtual void SetBounds(const gfx::Rect& rect) OVERRIDE;
  86   virtual gfx::NativeView GetNativeView() const OVERRIDE;
  87   virtual gfx::NativeViewId GetNativeViewId() const OVERRIDE;
  88   virtual gfx::NativeViewAccessible GetNativeViewAccessible() OVERRIDE;
  89   virtual void MovePluginWindows(
  90       const gfx::Vector2d& scroll_offset,
  91       const std::vector<WebPluginGeometry>& moves) OVERRIDE;
  92   virtual void Focus() OVERRIDE;
  93   virtual void Blur() OVERRIDE;
  94   virtual bool HasFocus() const OVERRIDE;
  95   virtual bool IsSurfaceAvailableForCopy() const OVERRIDE;
  96   virtual void Show() OVERRIDE;
  97   virtual void Hide() OVERRIDE;
  98   virtual bool IsShowing() OVERRIDE;
  99   virtual gfx::Rect GetViewBounds() const OVERRIDE;
 100   virtual gfx::Size GetPhysicalBackingSize() const OVERRIDE;
 101   virtual float GetOverdrawBottomHeight() const OVERRIDE;
 102   virtual void UpdateCursor(const WebCursor& cursor) OVERRIDE;
 103   virtual void SetIsLoading(bool is_loading) OVERRIDE;
 104   virtual void TextInputTypeChanged(ui::TextInputType type,
 105                                     ui::TextInputMode input_mode,
 106                                     bool can_compose_inline) OVERRIDE;
 107   virtual void ImeCancelComposition() OVERRIDE;
 108   virtual void DidUpdateBackingStore(
 109       const gfx::Rect& scroll_rect,
 110       const gfx::Vector2d& scroll_delta,
 111       const std::vector<gfx::Rect>& copy_rects,
 112       const std::vector<ui::LatencyInfo>& latency_info) OVERRIDE;
 113   virtual void RenderProcessGone(base::TerminationStatus status,
 114                                  int error_code) OVERRIDE;
 115   virtual void Destroy() OVERRIDE;
 116   virtual void SetTooltipText(const base::string16& tooltip_text) OVERRIDE;
 117   virtual void SelectionChanged(const base::string16& text,
 118                                 size_t offset,
 119                                 const gfx::Range& range) OVERRIDE;
 120   virtual void SelectionBoundsChanged(
 121       const ViewHostMsg_SelectionBounds_Params& params) OVERRIDE;
 122   virtual void ScrollOffsetChanged() OVERRIDE;
 123   virtual BackingStore* AllocBackingStore(const gfx::Size& size) OVERRIDE;
 124   virtual void OnAcceleratedCompositingStateChange() OVERRIDE;
 125   virtual void AcceleratedSurfaceInitialized(int host_id,
 126                                              int route_id) OVERRIDE;
 127   virtual void AcceleratedSurfaceBuffersSwapped(
 128       const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
 129       int gpu_host_id) OVERRIDE;
 130   virtual void AcceleratedSurfacePostSubBuffer(
 131       const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
 132       int gpu_host_id) OVERRIDE;
 133   virtual void AcceleratedSurfaceSuspend() OVERRIDE;
 134   virtual void AcceleratedSurfaceRelease() OVERRIDE;
 135   virtual bool HasAcceleratedSurface(const gfx::Size& desired_size) OVERRIDE;
 136   virtual void SetBackground(const SkBitmap& background) OVERRIDE;
 137   virtual void CopyFromCompositingSurface(
 138       const gfx::Rect& src_subrect,
 139       const gfx::Size& dst_size,
 140       const base::Callback<void(bool, const SkBitmap&)>& callback) OVERRIDE;
 141   virtual void CopyFromCompositingSurfaceToVideoFrame(
 142       const gfx::Rect& src_subrect,
 143       const scoped_refptr<media::VideoFrame>& target,
 144       const base::Callback<void(bool)>& callback) OVERRIDE;
 145   virtual bool CanCopyToVideoFrame() const OVERRIDE;
 146   virtual void GetScreenInfo(blink::WebScreenInfo* results) OVERRIDE;
 147   virtual gfx::Rect GetBoundsInRootWindow() OVERRIDE;
 148   virtual gfx::GLSurfaceHandle GetCompositingSurface() OVERRIDE;
 149   virtual void ProcessAckedTouchEvent(const TouchEventWithLatencyInfo& touch,
 150                                       InputEventAckState ack_result) OVERRIDE;
 151   virtual void SetHasHorizontalScrollbar(
 152       bool has_horizontal_scrollbar) OVERRIDE;
 153   virtual void SetScrollOffsetPinning(
 154       bool is_pinned_to_left, bool is_pinned_to_right) OVERRIDE;
 155   virtual void UnhandledWheelEvent(
 156       const blink::WebMouseWheelEvent& event) OVERRIDE;
 157   virtual InputEventAckState FilterInputEvent(
 158       const blink::WebInputEvent& input_event) OVERRIDE;
 159   virtual void OnSetNeedsFlushInput() OVERRIDE;
 160   virtual void GestureEventAck(int gesture_event_type,
 161                                InputEventAckState ack_result) OVERRIDE;
 162   virtual void CreateBrowserAccessibilityManagerIfNeeded() OVERRIDE;
 163   virtual bool LockMouse() OVERRIDE;
 164   virtual void UnlockMouse() OVERRIDE;
 165   virtual void HasTouchEventHandlers(bool need_touch_events) OVERRIDE;
 166   virtual void OnSwapCompositorFrame(
 167       uint32 output_surface_id,
 168       scoped_ptr<cc::CompositorFrame> frame) OVERRIDE;
 169   virtual void OnOverscrolled(gfx::Vector2dF accumulated_overscroll,
 170                               gfx::Vector2dF current_fling_velocity) OVERRIDE;
 171   virtual void ShowDisambiguationPopup(const gfx::Rect& target_rect,
 172                                        const SkBitmap& zoomed_bitmap) OVERRIDE;
 173   virtual scoped_ptr<SyntheticGestureTarget> CreateSyntheticGestureTarget()
 174       OVERRIDE;
 175
 176   // Implementation of BrowserAccessibilityDelegate:
 177   virtual void SetAccessibilityFocus(int acc_obj_id) OVERRIDE;
 178   virtual void AccessibilityDoDefaultAction(int acc_obj_id) OVERRIDE;
 179   virtual void AccessibilityScrollToMakeVisible(
 180       int acc_obj_id, gfx::Rect subfocus) OVERRIDE;
 181   virtual void AccessibilityScrollToPoint(
 182       int acc_obj_id, gfx::Point point) OVERRIDE;
 183   virtual void AccessibilitySetTextSelection(
 184       int acc_obj_id, int start_offset, int end_offset) OVERRIDE;
 185   virtual gfx::Point GetLastTouchEventLocation() const OVERRIDE;
 186   virtual void FatalAccessibilityTreeError() OVERRIDE;
 187
 188   // cc::DelegatedFrameResourceCollectionClient implementation.
 189   virtual void UnusedResourcesAreAvailable() OVERRIDE;
 190
 191   // ui::WindowAndroidObserver implementation.
 192   virtual void OnCompositingDidCommit() OVERRIDE;
 193   virtual void OnAttachCompositor() OVERRIDE {}
 194   virtual void OnDetachCompositor() OVERRIDE;
 195
 196   // ImageTransportFactoryAndroidObserver implementation.
 197   virtual void OnLostResources() OVERRIDE;
 198
 199   // DelegatedFrameEvictor implementation
 200   virtual void EvictDelegatedFrame() OVERRIDE;
 201
 202   // Non-virtual methods
 203   void SetContentViewCore(ContentViewCoreImpl* content_view_core);
 204   SkColor GetCachedBackgroundColor() const;
 205   void SendKeyEvent(const NativeWebKeyboardEvent& event);
 206   void SendTouchEvent(const blink::WebTouchEvent& event);
 207   void SendMouseEvent(const blink::WebMouseEvent& event);
 208   void SendMouseWheelEvent(const blink::WebMouseWheelEvent& event);
 209   void SendGestureEvent(const blink::WebGestureEvent& event);
 210   void SendBeginFrame(const cc::BeginFrameArgs& args);
 211
 212   void OnTextInputStateChanged(const ViewHostMsg_TextInputState_Params& params);
 213   void OnDidChangeBodyBackgroundColor(SkColor color);
 214   void OnStartContentIntent(const GURL& content_url);
 215   void OnSetNeedsBeginFrame(bool enabled);
 216   void OnSmartClipDataExtracted(const base::string16& result);
 217
 218   void LockResources();
 219   void UnlockResources();
 220
 221   int GetNativeImeAdapter();
 222
 223   void WasResized();
 224
 225   blink::WebGLId GetScaledContentTexture(float scale, gfx::Size* out_size);
 226   bool PopulateBitmapWithContents(jobject jbitmap);
 227
 228   bool HasValidFrame() const;
 229
 230   // Select all text between the given coordinates.
 231   void SelectRange(const gfx::Point& start, const gfx::Point& end);
 232
 233   void MoveCaret(const gfx::Point& point);
 234
 235   void RequestContentClipping(const gfx::Rect& clipping,
 236                               const gfx::Size& content_size);
 237
 238   // Returns true when animation ticks are still needed. This avoids a separate
 239   // round-trip for requesting follow-up animation.
 240   bool Animate(base::TimeTicks frame_time);
 241
 242   void SynchronousFrameMetadata(
 243       const cc::CompositorFrameMetadata& frame_metadata);
 244
 245   void SetOverlayVideoMode(bool enabled);
 246
 247  private:
 248   void BuffersSwapped(const gpu::Mailbox& mailbox,
 249                       uint32_t output_surface_id,
 250                       const base::Closure& ack_callback);
 251
 252   void RunAckCallbacks();
 253
 254   void DestroyDelegatedContent();
 255   void SwapDelegatedFrame(uint32 output_surface_id,
 256                           scoped_ptr<cc::DelegatedFrameData> frame_data);
 257   void SendDelegatedFrameAck(uint32 output_surface_id);
 258
 259   void UpdateContentViewCoreFrameMetadata(
 260       const cc::CompositorFrameMetadata& frame_metadata);
 261   void ComputeContentsSize(const cc::CompositorFrameMetadata& frame_metadata);
 262   void ResetClipping();
 263   void ClipContents(const gfx::Rect& clipping, const gfx::Size& content_size);
 264
 265   void AttachLayers();
 266   void RemoveLayers();
 267
 268   void UpdateAnimationSize(const cc::CompositorFrameMetadata& frame_metadata);
 269
 270   // Called after async screenshot task completes. Scales and crops the result
 271   // of the copy.
 272   static void PrepareTextureCopyOutputResult(
 273       const gfx::Size& dst_size_in_pixel,
 274       const base::Callback<void(bool, const SkBitmap&)>& callback,
 275       scoped_ptr<cc::CopyOutputResult> result);
 276   static void PrepareBitmapCopyOutputResult(
 277       const gfx::Size& dst_size_in_pixel,
 278       const base::Callback<void(bool, const SkBitmap&)>& callback,
 279       scoped_ptr<cc::CopyOutputResult> result);
 280
 281   // DevTools ScreenCast support for Android WebView.
 282   void SynchronousCopyContents(
 283       const gfx::Rect& src_subrect_in_pixel,
 284       const gfx::Size& dst_size_in_pixel,
 285       const base::Callback<void(bool, const SkBitmap&)>& callback);
 286
 287   // The model object.
 288   RenderWidgetHostImpl* host_;
 289
 290   // Used to track whether this render widget needs a BeginFrame.
 291   bool needs_begin_frame_;
 292
 293   // Whether or not this widget is potentially attached to the view hierarchy.
 294   // This view may not actually be attached if this is true, but it should be
 295   // treated as such, because as soon as a ContentViewCore is set the layer
 296   // will be attached automatically.
 297   bool are_layers_attached_;
 298
 299   // ContentViewCoreImpl is our interface to the view system.
 300   ContentViewCoreImpl* content_view_core_;
 301
 302   ImeAdapterAndroid ime_adapter_android_;
 303
 304   // Body background color of the underlying document.
 305   SkColor cached_background_color_;
 306
 307   // The texture layer for this view when using browser-side compositing.
 308   scoped_refptr<cc::TextureLayer> texture_layer_;
 309
 310   scoped_refptr<cc::DelegatedFrameResourceCollection> resource_collection_;
 311   scoped_refptr<cc::DelegatedFrameProvider> frame_provider_;
 312   scoped_refptr<cc::DelegatedRendererLayer> delegated_renderer_layer_;
 313
 314   // The layer used for rendering the contents of this view.
 315   // It is either owned by texture_layer_ or surface_texture_transport_
 316   // depending on the mode.
 317   scoped_refptr<cc::Layer> layer_;
 318
 319   // The most recent texture id that was pushed to the texture layer.
 320   unsigned int texture_id_in_layer_;
 321
 322   // The most recent texture size that was pushed to the texture layer.
 323   gfx::Size texture_size_in_layer_;
 324
 325   // The most recent content size that was pushed to the texture layer.
 326   gfx::Size content_size_in_layer_;
 327
 328   // The mailbox of the previously received frame.
 329   gpu::Mailbox current_mailbox_;
 330
 331   // The output surface id of the last received frame.
 332   uint32_t last_output_surface_id_;
 333
 334   base::WeakPtrFactory<RenderWidgetHostViewAndroid> weak_ptr_factory_;
 335
 336   std::queue<base::Closure> ack_callbacks_;
 337
 338   const bool overscroll_effect_enabled_;
 339   // Used to render overscroll overlays.
 340   // Note: |overscroll_effect_| will never be NULL, even if it's never enabled.
 341   scoped_ptr<OverscrollGlow> overscroll_effect_;
 342
 343   bool flush_input_requested_;
 344
 345   int accelerated_surface_route_id_;
 346
 347   // Size to use if we have no backing ContentViewCore
 348   gfx::Size default_size_;
 349
 350   const bool using_synchronous_compositor_;
 351
 352   scoped_ptr<DelegatedFrameEvictor> frame_evictor_;
 353
 354   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 355 };
 356
 357 } // namespace content
 358
 359 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_