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/output/begin_frame_args.h"
  19 #include "cc/surfaces/surface_factory_client.h"
  20 #include "cc/surfaces/surface_id.h"
  21 #include "content/browser/accessibility/browser_accessibility_manager.h"
  22 #include "content/browser/renderer_host/delegated_frame_evictor.h"
  23 #include "content/browser/renderer_host/ime_adapter_android.h"
  24 #include "content/browser/renderer_host/input/stylus_text_selector.h"
  25 #include "content/browser/renderer_host/render_widget_host_view_base.h"
  26 #include "content/common/content_export.h"
  27 #include "content/public/browser/readback_types.h"
  28 #include "gpu/command_buffer/common/mailbox.h"
  29 #include "third_party/skia/include/core/SkColor.h"
  30 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
  31 #include "ui/android/window_android_observer.h"
  32 #include "ui/events/gesture_detection/filtered_gesture_provider.h"
  33 #include "ui/gfx/geometry/size.h"
  34 #include "ui/gfx/geometry/vector2d_f.h"
  35 #include "ui/touch_selection/touch_selection_controller.h"
  36
  37 struct ViewHostMsg_TextInputState_Params;
  38
  39 namespace cc {
  40 class CopyOutputResult;
  41 class DelegatedFrameProvider;
  42 class DelegatedRendererLayer;
  43 class Layer;
  44 class SurfaceFactory;
  45 class SurfaceIdAllocator;
  46 enum class SurfaceDrawStatus;
  47 }
  48
  49 namespace blink {
  50 class WebExternalTextureLayer;
  51 class WebTouchEvent;
  52 class WebMouseEvent;
  53 }
  54
  55 namespace content {
  56 class ContentViewCoreImpl;
  57 class OverscrollControllerAndroid;
  58 class RenderWidgetHost;
  59 class RenderWidgetHostImpl;
  60 struct DidOverscrollParams;
  61 struct NativeWebKeyboardEvent;
  62
  63 // -----------------------------------------------------------------------------
  64 // See comments in render_widget_host_view.h about this class and its members.
  65 // -----------------------------------------------------------------------------
  66 class CONTENT_EXPORT RenderWidgetHostViewAndroid
  67     : public RenderWidgetHostViewBase,
  68       public cc::DelegatedFrameResourceCollectionClient,
  69       public cc::SurfaceFactoryClient,
  70       public ui::GestureProviderClient,
  71       public ui::WindowAndroidObserver,
  72       public DelegatedFrameEvictorClient,
  73       public StylusTextSelectorClient,
  74       public ui::TouchSelectionControllerClient {
  75  public:
  76   RenderWidgetHostViewAndroid(RenderWidgetHostImpl* widget,
  77                               ContentViewCoreImpl* content_view_core);
  78   ~RenderWidgetHostViewAndroid() override;
  79
  80   void Blur();
  81
  82   // RenderWidgetHostView implementation.
  83   bool OnMessageReceived(const IPC::Message& msg) override;
  84   void InitAsChild(gfx::NativeView parent_view) override;
  85   void InitAsPopup(RenderWidgetHostView* parent_host_view,
  86                    const gfx::Rect& pos) override;
  87   void InitAsFullscreen(RenderWidgetHostView* reference_host_view) override;
  88   RenderWidgetHost* GetRenderWidgetHost() const override;
  89   void SetSize(const gfx::Size& size) override;
  90   void SetBounds(const gfx::Rect& rect) override;
  91   gfx::Vector2dF GetLastScrollOffset() const override;
  92   gfx::NativeView GetNativeView() const override;
  93   gfx::NativeViewId GetNativeViewId() const override;
  94   gfx::NativeViewAccessible GetNativeViewAccessible() override;
  95   void MovePluginWindows(const std::vector<WebPluginGeometry>& moves) override;
  96   void Focus() override;
  97   bool HasFocus() const override;
  98   bool IsSurfaceAvailableForCopy() const override;
  99   void Show() override;
 100   void Hide() override;
 101   bool IsShowing() override;
 102   gfx::Rect GetViewBounds() const override;
 103   gfx::Size GetPhysicalBackingSize() const override;
 104   bool DoTopControlsShrinkBlinkSize() const override;
 105   float GetTopControlsHeight() const override;
 106   void UpdateCursor(const WebCursor& cursor) override;
 107   void SetIsLoading(bool is_loading) override;
 108   void TextInputStateChanged(
 109       const ViewHostMsg_TextInputState_Params& params) override;
 110   void ImeCancelComposition() override;
 111   void ImeCompositionRangeChanged(
 112       const gfx::Range& range,
 113       const std::vector<gfx::Rect>& character_bounds) override;
 114   void FocusedNodeChanged(bool is_editable_node) override;
 115   void RenderProcessGone(base::TerminationStatus status,
 116                          int error_code) override;
 117   void Destroy() override;
 118   void SetTooltipText(const base::string16& tooltip_text) override;
 119   void SelectionChanged(const base::string16& text,
 120                         size_t offset,
 121                         const gfx::Range& range) override;
 122   void SelectionBoundsChanged(
 123       const ViewHostMsg_SelectionBounds_Params& params) override;
 124   void AcceleratedSurfaceInitialized(int route_id) override;
 125   bool HasAcceleratedSurface(const gfx::Size& desired_size) override;
 126   void SetBackgroundColor(SkColor color) override;
 127   void CopyFromCompositingSurface(
 128       const gfx::Rect& src_subrect,
 129       const gfx::Size& dst_size,
 130       ReadbackRequestCallback& callback,
 131       const SkColorType preferred_color_type) override;
 132   void CopyFromCompositingSurfaceToVideoFrame(
 133       const gfx::Rect& src_subrect,
 134       const scoped_refptr<media::VideoFrame>& target,
 135       const base::Callback<void(bool)>& callback) override;
 136   bool CanCopyToVideoFrame() const override;
 137   void GetScreenInfo(blink::WebScreenInfo* results) override;
 138   gfx::Rect GetBoundsInRootWindow() override;
 139   gfx::GLSurfaceHandle GetCompositingSurface() override;
 140   void ProcessAckedTouchEvent(const TouchEventWithLatencyInfo& touch,
 141                               InputEventAckState ack_result) override;
 142   InputEventAckState FilterInputEvent(
 143       const blink::WebInputEvent& input_event) override;
 144   void OnSetNeedsFlushInput() override;
 145   void GestureEventAck(const blink::WebGestureEvent& event,
 146                        InputEventAckState ack_result) override;
 147   BrowserAccessibilityManager* CreateBrowserAccessibilityManager(
 148       BrowserAccessibilityDelegate* delegate) override;
 149   bool LockMouse() override;
 150   void UnlockMouse() override;
 151   void OnSwapCompositorFrame(uint32 output_surface_id,
 152                              scoped_ptr<cc::CompositorFrame> frame) override;
 153   void DidOverscroll(const DidOverscrollParams& params) override;
 154   void DidStopFlinging() override;
 155   uint32_t GetSurfaceIdNamespace() override;
 156   void ShowDisambiguationPopup(const gfx::Rect& rect_pixels,
 157                                const SkBitmap& zoomed_bitmap) override;
 158   scoped_ptr<SyntheticGestureTarget> CreateSyntheticGestureTarget() override;
 159   void LockCompositingSurface() override;
 160   void UnlockCompositingSurface() override;
 161   void OnTextSurroundingSelectionResponse(const base::string16& content,
 162                                           size_t start_offset,
 163                                           size_t end_offset) override;
 164   void OnDidNavigateMainFrameToNewPage() override;
 165
 166   // cc::DelegatedFrameResourceCollectionClient implementation.
 167   void UnusedResourcesAreAvailable() override;
 168
 169   // cc::SurfaceFactoryClient implementation.
 170   void ReturnResources(const cc::ReturnedResourceArray& resources) override;
 171
 172   // ui::GestureProviderClient implementation.
 173   void OnGestureEvent(const ui::GestureEventData& gesture) override;
 174
 175   // ui::WindowAndroidObserver implementation.
 176   void OnCompositingDidCommit() override;
 177   void OnRootWindowVisibilityChanged(bool visible) override;
 178   void OnAttachCompositor() override;
 179   void OnDetachCompositor() override;
 180   void OnVSync(base::TimeTicks frame_time,
 181                base::TimeDelta vsync_period) override;
 182   void OnAnimate(base::TimeTicks begin_frame_time) override;
 183   void OnActivityStopped() override;
 184   void OnActivityStarted() override;
 185
 186   // DelegatedFrameEvictor implementation
 187   void EvictDelegatedFrame() override;
 188
 189   // StylusTextSelectorClient implementation.
 190   void OnStylusSelectBegin(float x0, float y0, float x1, float y1) override;
 191   void OnStylusSelectUpdate(float x, float y) override;
 192   void OnStylusSelectEnd() override;
 193   void OnStylusSelectTap(base::TimeTicks time, float x, float y) override;
 194
 195   // ui::TouchSelectionControllerClient implementation.
 196   bool SupportsAnimation() const override;
 197   void SetNeedsAnimate() override;
 198   void MoveCaret(const gfx::PointF& position) override;
 199   void MoveRangeSelectionExtent(const gfx::PointF& extent) override;
 200   void SelectBetweenCoordinates(const gfx::PointF& base,
 201                                 const gfx::PointF& extent) override;
 202   void OnSelectionEvent(ui::SelectionEventType event) override;
 203   scoped_ptr<ui::TouchHandleDrawable> CreateDrawable() override;
 204
 205   // Non-virtual methods
 206   void SetContentViewCore(ContentViewCoreImpl* content_view_core);
 207   SkColor GetCachedBackgroundColor() const;
 208   void SendKeyEvent(const NativeWebKeyboardEvent& event);
 209   void SendMouseEvent(const blink::WebMouseEvent& event);
 210   void SendMouseWheelEvent(const blink::WebMouseWheelEvent& event);
 211   void SendGestureEvent(const blink::WebGestureEvent& event);
 212
 213   void OnDidChangeBodyBackgroundColor(SkColor color);
 214   void OnStartContentIntent(const GURL& content_url);
 215   void OnSetNeedsBeginFrames(bool enabled);
 216   void OnSmartClipDataExtracted(const base::string16& text,
 217                                 const base::string16& html,
 218                                 const gfx::Rect rect);
 219
 220   bool OnTouchEvent(const ui::MotionEvent& event);
 221   bool OnTouchHandleEvent(const ui::MotionEvent& event);
 222   void ResetGestureDetection();
 223   void SetDoubleTapSupportEnabled(bool enabled);
 224   void SetMultiTouchZoomSupportEnabled(bool enabled);
 225
 226   long GetNativeImeAdapter();
 227
 228   void WasResized();
 229
 230   void GetScaledContentBitmap(float scale,
 231                               SkColorType preferred_color_type,
 232                               gfx::Rect src_subrect,
 233                               ReadbackRequestCallback& result_callback);
 234
 235   scoped_refptr<cc::Layer> CreateDelegatedLayer() const;
 236
 237   bool HasValidFrame() const;
 238
 239   void MoveCaret(const gfx::Point& point);
 240   void DismissTextHandles();
 241   void SetTextHandlesTemporarilyHidden(bool hidden);
 242   void OnShowingPastePopup(const gfx::PointF& point);
 243   void OnShowUnhandledTapUIIfNeeded(int x_dip, int y_dip);
 244
 245   void SynchronousFrameMetadata(
 246       const cc::CompositorFrameMetadata& frame_metadata);
 247
 248   void SetOverlayVideoMode(bool enabled);
 249
 250   typedef base::Callback<
 251       void(const base::string16& content, int start_offset, int end_offset)>
 252       TextSurroundingSelectionCallback;
 253   void SetTextSurroundingSelectionCallback(
 254       const TextSurroundingSelectionCallback& callback);
 255
 256   static void OnContextLost();
 257
 258  private:
 259   void RunAckCallbacks(cc::SurfaceDrawStatus status);
 260
 261   void DestroyDelegatedContent();
 262   void CheckOutputSurfaceChanged(uint32 output_surface_id);
 263   void SubmitFrame(scoped_ptr<cc::CompositorFrame> frame_data);
 264   void SwapDelegatedFrame(uint32 output_surface_id,
 265                           scoped_ptr<cc::CompositorFrame> frame_data);
 266   void SendDelegatedFrameAck(uint32 output_surface_id);
 267   void SendReturnedDelegatedResources(uint32 output_surface_id);
 268
 269   void OnFrameMetadataUpdated(
 270       const cc::CompositorFrameMetadata& frame_metadata);
 271   void ComputeContentsSize(const cc::CompositorFrameMetadata& frame_metadata);
 272
 273   void ShowInternal();
 274   void HideInternal(bool hide_frontbuffer, bool stop_observing_root_window);
 275   void AttachLayers();
 276   void RemoveLayers();
 277
 278   // Called after async screenshot task completes. Scales and crops the result
 279   // of the copy.
 280   static void PrepareTextureCopyOutputResult(
 281       const gfx::Size& dst_size_in_pixel,
 282       SkColorType color_type,
 283       const base::TimeTicks& start_time,
 284       ReadbackRequestCallback& callback,
 285       scoped_ptr<cc::CopyOutputResult> result);
 286   static void PrepareTextureCopyOutputResultForDelegatedReadback(
 287       const gfx::Size& dst_size_in_pixel,
 288       SkColorType color_type,
 289       const base::TimeTicks& start_time,
 290       scoped_refptr<cc::Layer> readback_layer,
 291       ReadbackRequestCallback& callback,
 292       scoped_ptr<cc::CopyOutputResult> result);
 293
 294   // DevTools ScreenCast support for Android WebView.
 295   void SynchronousCopyContents(const gfx::Rect& src_subrect_in_pixel,
 296                                const gfx::Size& dst_size_in_pixel,
 297                                ReadbackRequestCallback& callback,
 298                                const SkColorType color_type);
 299
 300   // If we have locks on a frame during a ContentViewCore swap or a context
 301   // lost, the frame is no longer valid and we can safely release all the locks.
 302   // Use this method to release all the locks.
 303   void ReleaseLocksOnSurface();
 304
 305   // Drop any incoming frames from the renderer when there are locks on the
 306   // current frame.
 307   void RetainFrame(uint32 output_surface_id,
 308                    scoped_ptr<cc::CompositorFrame> frame);
 309
 310   void InternalSwapCompositorFrame(uint32 output_surface_id,
 311                                    scoped_ptr<cc::CompositorFrame> frame);
 312   void OnLostResources();
 313
 314   enum VSyncRequestType {
 315     FLUSH_INPUT = 1 << 0,
 316     BEGIN_FRAME = 1 << 1,
 317     PERSISTENT_BEGIN_FRAME = 1 << 2
 318   };
 319   void RequestVSyncUpdate(uint32 requests);
 320   void StartObservingRootWindow();
 321   void StopObservingRootWindow();
 322   void SendBeginFrame(base::TimeTicks frame_time, base::TimeDelta vsync_period);
 323   bool Animate(base::TimeTicks frame_time);
 324   void RequestDisallowInterceptTouchEvent();
 325
 326   // The model object.
 327   RenderWidgetHostImpl* host_;
 328
 329   bool use_surfaces_;
 330
 331   // Used to control action dispatch at the next |OnVSync()| call.
 332   uint32 outstanding_vsync_requests_;
 333
 334   bool is_showing_;
 335
 336   // ContentViewCoreImpl is our interface to the view system.
 337   ContentViewCoreImpl* content_view_core_;
 338
 339   // Cache the WindowAndroid instance exposed by ContentViewCore to avoid
 340   // calling into ContentViewCore when it is being detached from the
 341   // WebContents during destruction. The WindowAndroid has stronger lifetime
 342   // guarantees, and should be safe to use for observer detachment.
 343   // This will be non-null iff |content_view_core_| is non-null.
 344   ui::WindowAndroid* content_view_core_window_android_;
 345
 346   ImeAdapterAndroid ime_adapter_android_;
 347
 348   // Body background color of the underlying document.
 349   SkColor cached_background_color_;
 350
 351   scoped_refptr<cc::DelegatedFrameResourceCollection> resource_collection_;
 352   scoped_refptr<cc::DelegatedFrameProvider> frame_provider_;
 353   scoped_refptr<cc::Layer> layer_;
 354
 355   scoped_ptr<cc::SurfaceIdAllocator> id_allocator_;
 356   scoped_ptr<cc::SurfaceFactory> surface_factory_;
 357   cc::SurfaceId surface_id_;
 358   gfx::Size current_surface_size_;
 359   cc::ReturnedResourceArray surface_returned_resources_;
 360
 361   // The most recent texture size that was pushed to the texture layer.
 362   gfx::Size texture_size_in_layer_;
 363
 364   // The most recent content size that was pushed to the texture layer.
 365   gfx::Size content_size_in_layer_;
 366
 367   // The output surface id of the last received frame.
 368   uint32_t last_output_surface_id_;
 369
 370
 371   std::queue<base::Closure> ack_callbacks_;
 372
 373   // Used to control and render overscroll-related effects.
 374   scoped_ptr<OverscrollControllerAndroid> overscroll_controller_;
 375
 376   // Provides gesture synthesis given a stream of touch events (derived from
 377   // Android MotionEvent's) and touch event acks.
 378   ui::FilteredGestureProvider gesture_provider_;
 379
 380   // Handles gesture based text selection
 381   StylusTextSelector stylus_text_selector_;
 382
 383   // Manages selection handle rendering and manipulation.
 384   // This will always be NULL if |content_view_core_| is NULL.
 385   scoped_ptr<ui::TouchSelectionController> selection_controller_;
 386
 387   int accelerated_surface_route_id_;
 388
 389   // Size to use if we have no backing ContentViewCore
 390   gfx::Size default_size_;
 391
 392   const bool using_browser_compositor_;
 393
 394   scoped_ptr<DelegatedFrameEvictor> frame_evictor_;
 395
 396   size_t locks_on_frame_count_;
 397   bool observing_root_window_;
 398
 399   struct LastFrameInfo {
 400     LastFrameInfo(uint32 output_id,
 401                   scoped_ptr<cc::CompositorFrame> output_frame);
 402     ~LastFrameInfo();
 403     uint32 output_surface_id;
 404     scoped_ptr<cc::CompositorFrame> frame;
 405   };
 406
 407   scoped_ptr<LastFrameInfo> last_frame_info_;
 408
 409   TextSurroundingSelectionCallback text_surrounding_selection_callback_;
 410
 411   // The last scroll offset of the view.
 412   gfx::Vector2dF last_scroll_offset_;
 413
 414   base::WeakPtrFactory<RenderWidgetHostViewAndroid> weak_ptr_factory_;
 415
 416   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 417 };
 418
 419 } // namespace content
 420
 421 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_