[Android] Composited selection handle rendering

content/browser/renderer_host/render_widget_host_view_android.cc

 // Copyright (c) 2012 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/sys_info.h"
 #include "base/threading/worker_pool.h"
 #include "cc/base/latency_info_swap_promise.h"
 #include "cc/layers/delegated_frame_provider.h"
 #include "cc/layers/delegated_renderer_layer.h"
 #include "cc/layers/layer.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/compositor_frame_ack.h"
 #include "cc/output/copy_output_request.h"
 #include "cc/output/copy_output_result.h"
 #include "cc/resources/single_release_callback.h"
 #include "cc/trees/layer_tree_host.h"
 #include "content/browser/accessibility/browser_accessibility_manager_android.h"
+#include "content/browser/android/composited_touch_handle_drawable.h"
 #include "content/browser/android/content_view_core_impl.h"
 #include "content/browser/android/in_process/synchronous_compositor_impl.h"
 #include "content/browser/android/overscroll_glow.h"
 #include "content/browser/devtools/render_view_devtools_agent_host.h"
 #include "content/browser/gpu/compositor_util.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/gpu/gpu_process_host_ui_shim.h"
 #include "content/browser/gpu/gpu_surface_tracker.h"
 #include "content/browser/media/media_web_contents_observer.h"
 #include "content/browser/renderer_host/compositor_impl_android.h"
 #include "content/browser/renderer_host/dip_util.h"
 #include "content/browser/renderer_host/image_transport_factory_android.h"
 #include "content/browser/renderer_host/input/synthetic_gesture_target_android.h"
+#include "content/browser/renderer_host/input/touch_selection_controller.h"
 #include "content/browser/renderer_host/input/web_input_event_builders_android.h"
 #include "content/browser/renderer_host/input/web_input_event_util.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/common/gpu/client/gl_helper.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/input/did_overscroll_params.h"
 #include "content/common/input_messages.h"
 #include "content/common/view_messages.h"
@@ skipping 93 matching lines @@
   return params;
 }
 
 ui::GestureProvider::Config CreateGestureProviderConfig() {
   ui::GestureProvider::Config config = ui::DefaultGestureProviderConfig();
   config.disable_click_delay =
       CommandLine::ForCurrentProcess()->HasSwitch(switches::kDisableClickDelay);
   return config;
 }
 
+TouchHandleOrientation SelectionBoundTypeToTouchHandleOrientation(
+    cc::SelectionBoundType bound_type) {
+  switch (bound_type) {
+    case cc::SELECTION_BOUND_LEFT:
+      return TOUCH_HANDLE_LEFT;
+    case cc::SELECTION_BOUND_RIGHT:
+      return TOUCH_HANDLE_RIGHT;
+    case cc::SELECTION_BOUND_CENTER:
+      return TOUCH_HANDLE_CENTER;
+    case cc::SELECTION_BOUND_EMPTY:
+      return TOUCH_HANDLE_ORIENTATION_UNDEFINED;
+  }
+}
+
 bool HasFixedPageScale(const cc::CompositorFrameMetadata& frame_metadata) {
   return frame_metadata.min_page_scale_factor ==
          frame_metadata.max_page_scale_factor;
 }
 
 bool HasMobileViewport(const cc::CompositorFrameMetadata& frame_metadata) {
   float window_width_dip =
       frame_metadata.page_scale_factor *
           frame_metadata.scrollable_viewport_size.width();
   float content_width_css = frame_metadata.root_layer_size.width();
@@ skipping 387 matching lines @@
     const gfx::Rect rect) {
   if (content_view_core_)
     content_view_core_->OnSmartClipDataExtracted(text, html, rect);
 }
 
 bool RenderWidgetHostViewAndroid::OnTouchEvent(
     const ui::MotionEvent& event) {
   if (!host_)
     return false;
 
+  if (selection_controller_ &&
+      selection_controller_->WillHandleTouchEvent(event))
+    return true;
+
   if (!gesture_provider_.OnTouchEvent(event))
     return false;
 
   if (gesture_text_selector_.OnTouchEvent(event)) {
     gesture_provider_.OnTouchEventAck(false);
     return true;
   }
 
   // Short-circuit touch forwarding if no touch handlers exist.
   if (!host_->ShouldForwardTouchEvent()) {
     const bool event_consumed = false;
     gesture_provider_.OnTouchEventAck(event_consumed);
     return true;
   }
 
   SendTouchEvent(CreateWebTouchEventFromMotionEvent(event));
   return true;
 }
 
+bool RenderWidgetHostViewAndroid::OnTouchHandleEvent(
+    const ui::MotionEvent& event) {
+  return selection_controller_ &&
+         selection_controller_->WillHandleTouchEvent(event);
+}
+
 void RenderWidgetHostViewAndroid::ResetGestureDetection() {
   const ui::MotionEvent* current_down_event =
       gesture_provider_.GetCurrentDownEvent();
   if (!current_down_event)
     return;
 
   scoped_ptr<ui::MotionEvent> cancel_event = current_down_event->Cancel();
   DCHECK(cancel_event);
   OnTouchEvent(*cancel_event);
 }
 
 void RenderWidgetHostViewAndroid::SetDoubleTapSupportEnabled(bool enabled) {
   gesture_provider_.SetDoubleTapSupportForPlatformEnabled(enabled);
 }
 
 void RenderWidgetHostViewAndroid::SetMultiTouchZoomSupportEnabled(
     bool enabled) {
   gesture_provider_.SetMultiTouchZoomSupportEnabled(enabled);
 }
 
 void RenderWidgetHostViewAndroid::ImeCancelComposition() {
   ime_adapter_android_.CancelComposition();
 }
 
 void RenderWidgetHostViewAndroid::FocusedNodeChanged(bool is_editable_node) {
   ime_adapter_android_.FocusedNodeChanged(is_editable_node);
+  if (selection_controller_)
+    selection_controller_->OnSelectionEditable(is_editable_node);
 }
 
 void RenderWidgetHostViewAndroid::RenderProcessGone(
     base::TerminationStatus status, int error_code) {
   Destroy();
 }
 
 void RenderWidgetHostViewAndroid::Destroy() {
   RemoveLayers();
   SetContentViewCore(NULL);
@@ skipping 329 matching lines @@
                    static_cast<RenderViewDevToolsAgentHost*>(dtah.get()),
                    frame_metadata));
   }
 }
 
 void RenderWidgetHostViewAndroid::SetOverlayVideoMode(bool enabled) {
   if (layer_)
     layer_->SetContentsOpaque(!enabled);
 }
 
+bool RenderWidgetHostViewAndroid::SupportsAnimation() const {
+  // The synchronous (WebView) compositor does not have a proper browser
+  // compositor with which to drive animations.
+  return !using_synchronous_compositor_;
+}
+
+void RenderWidgetHostViewAndroid::SetNeedsAnimate() {
+  DCHECK(content_view_core_);
+  DCHECK(!using_synchronous_compositor_);
+  content_view_core_->GetWindowAndroid()->SetNeedsAnimate();
+}
+
+void RenderWidgetHostViewAndroid::MoveCaret(const gfx::PointF& position) {
+  MoveCaret(gfx::Point(position.x(), position.y()));
+}
+
+void RenderWidgetHostViewAndroid::SelectBetweenCoordinates(
+    const gfx::PointF& start,
+    const gfx::PointF& end) {
+  DCHECK(content_view_core_);
+  content_view_core_->SelectBetweenCoordinates(start, end);
+}
+
+void RenderWidgetHostViewAndroid::OnSelectionEvent(
+    SelectionEventType event,
+    const gfx::PointF& position) {
+  DCHECK(content_view_core_);
+  content_view_core_->OnSelectionEvent(event, position);
+}
+
+scoped_ptr<TouchHandleDrawable> RenderWidgetHostViewAndroid::CreateDrawable() {
+  DCHECK(content_view_core_);
+  if (using_synchronous_compositor_)
+    return content_view_core_->CreatePopupTouchHandleDrawable();
+
+  return scoped_ptr<TouchHandleDrawable>(new CompositedTouchHandleDrawable(
+      content_view_core_->GetLayer(), GetDpiScale()));
+}
+
 void RenderWidgetHostViewAndroid::SynchronousCopyContents(
     const gfx::Rect& src_subrect_in_pixel,
     const gfx::Size& dst_size_in_pixel,
     const base::Callback<void(bool, const SkBitmap&)>& callback,
     const SkColorType color_type) {
   SynchronousCompositor* compositor =
       SynchronousCompositorImpl::FromID(host_->GetProcess()->GetID(),
                                         host_->GetRoutingID());
   if (!compositor) {
     callback.Run(false, SkBitmap());
@@ skipping 51 matching lines @@
 }
 
 void RenderWidgetHostViewAndroid::UpdateSelectionBounds(
     const cc::CompositorFrameMetadata& frame_metadata) {
   if (!content_view_core_)
     return;
 
   const cc::ViewportSelectionBound& start = frame_metadata.selection_start;
   const cc::ViewportSelectionBound& end = frame_metadata.selection_end;
 
-  if (cached_selection_start_ == start && cached_selection_end_ == end)
-    return;
-
-  TRACE_EVENT0("input", "RenderWidgetHostViewAndroid::UpdateSelectionBounds");
-
-  cached_selection_start_ = start;
-  cached_selection_end_ = end;
-
-  content_view_core_->OnSelectionBoundsChanged(
-      start.viewport_rect.bottom_left(),
-      end.viewport_rect.bottom_left(),
-      start.type == cc::SELECTION_BOUND_RIGHT
-          ? blink::WebTextDirectionRightToLeft
-          : blink::WebTextDirectionDefault,
-      end.type == cc::SELECTION_BOUND_LEFT
-          ? blink::WebTextDirectionRightToLeft
-          : blink::WebTextDirectionDefault);
+  DCHECK(selection_controller_);
+  selection_controller_->OnSelectionBoundsChanged(
+      start.viewport_rect,
+      SelectionBoundTypeToTouchHandleOrientation(start.type),
+      start.visible,
+      end.viewport_rect,
+      SelectionBoundTypeToTouchHandleOrientation(end.type),
+      end.visible);
 }
 
 void RenderWidgetHostViewAndroid::AcceleratedSurfaceInitialized(int host_id,
                                                                 int route_id) {
   accelerated_surface_route_id_ = route_id;
 }
 
 void RenderWidgetHostViewAndroid::AcceleratedSurfaceBuffersSwapped(
     const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
     int gpu_host_id) {
   NOTREACHED() << "Need --composite-to-mailbox or --enable-delegated-renderer";
 }
 
 void RenderWidgetHostViewAndroid::AttachLayers() {
   if (!content_view_core_)
     return;
   if (!layer_.get())
     return;
 
   content_view_core_->AttachLayer(layer_);
   if (overscroll_effect_enabled_)
     overscroll_effect_->Enable();
   layer_->SetHideLayerAndSubtree(!is_showing_);
 }
 
 void RenderWidgetHostViewAndroid::RemoveLayers() {
   if (!content_view_core_)
     return;
+
   if (!layer_.get())
     return;
 
   content_view_core_->RemoveLayer(layer_);
   overscroll_effect_->Disable();
 }
 
-void RenderWidgetHostViewAndroid::SetNeedsAnimate() {
-  content_view_core_->GetWindowAndroid()->SetNeedsAnimate();
+bool RenderWidgetHostViewAndroid::Animate(base::TimeTicks frame_time) {
+  bool needs_animate = overscroll_effect_->Animate(frame_time);
+  if (selection_controller_)
+    needs_animate |= selection_controller_->Animate(frame_time);
+  return needs_animate;
 }
 
-bool RenderWidgetHostViewAndroid::Animate(base::TimeTicks frame_time) {
-  return overscroll_effect_->Animate(frame_time);
+float RenderWidgetHostViewAndroid::GetDpiScale() const {
+  DCHECK(content_view_core_);
+  return content_view_core_->GetDpiScale();
 }
 
 void RenderWidgetHostViewAndroid::AcceleratedSurfacePostSubBuffer(
     const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
     int gpu_host_id) {
   NOTREACHED();
 }
 
 void RenderWidgetHostViewAndroid::AcceleratedSurfaceSuspend() {
   NOTREACHED();
@@ skipping 44 matching lines @@
 
 void RenderWidgetHostViewAndroid::GestureEventAck(
     const blink::WebGestureEvent& event,
     InputEventAckState ack_result) {
   if (content_view_core_)
     content_view_core_->OnGestureEventAck(event, ack_result);
 }
 
 InputEventAckState RenderWidgetHostViewAndroid::FilterInputEvent(
     const blink::WebInputEvent& input_event) {
+  if (selection_controller_) {
+    switch (input_event.type) {
+      case blink::WebInputEvent::GestureLongPress:
+      case blink::WebInputEvent::GestureLongTap:
+        selection_controller_->AllowAutomaticInsertionShowing();
+        selection_controller_->AllowAutomaticSelectionShowing();
+        break;
+      case blink::WebInputEvent::GestureTap:
+        selection_controller_->AllowAutomaticInsertionShowing();
+        break;
+      default:
+        break;
+    }
+  }
+
   if (content_view_core_ &&
       content_view_core_->FilterInputEvent(input_event))
     return INPUT_EVENT_ACK_STATE_CONSUMED;
 
   if (!host_)
     return INPUT_EVENT_ACK_STATE_NOT_CONSUMED;
 
   if (input_event.type == blink::WebInputEvent::GestureTapDown ||
       input_event.type == blink::WebInputEvent::TouchStart) {
     GpuDataManagerImpl* gpu_data = GpuDataManagerImpl::GetInstance();
@@ skipping 87 matching lines @@
 
   if (host_)
     host_->ForwardGestureEventWithLatencyInfo(event, CreateLatencyInfo(event));
 }
 
 void RenderWidgetHostViewAndroid::MoveCaret(const gfx::Point& point) {
   if (host_)
     host_->MoveCaret(point);
 }
 
+void RenderWidgetHostViewAndroid::HideTextHandles() {
+  if (selection_controller_)
+    selection_controller_->HideAndDisallowAutomaticShowing();
+}
+
 SkColor RenderWidgetHostViewAndroid::GetCachedBackgroundColor() const {
   return cached_background_color_;
 }
 
 void RenderWidgetHostViewAndroid::DidOverscroll(
     const DidOverscrollParams& params) {
   if (!content_view_core_ || !layer_ || !is_showing_)
     return;
 
-  const float device_scale_factor = content_view_core_->GetDpiScale();
+  const float device_scale_factor = GetDpiScale();
   if (overscroll_effect_->OnOverscrolled(
           content_view_core_->GetLayer(),
           base::TimeTicks::Now(),
           gfx::ScaleVector2d(params.accumulated_overscroll,
                              device_scale_factor),
           gfx::ScaleVector2d(params.latest_overscroll_delta,
                              device_scale_factor),
           gfx::ScaleVector2d(params.current_fling_velocity,
                              device_scale_factor))) {
     SetNeedsAnimate();
   }
 }
 
 void RenderWidgetHostViewAndroid::DidStopFlinging() {
   if (content_view_core_)
     content_view_core_->DidStopFlinging();
 }
 
 void RenderWidgetHostViewAndroid::SetContentViewCore(
     ContentViewCoreImpl* content_view_core) {
   RemoveLayers();
   if (observing_root_window_ && content_view_core_) {
     content_view_core_->GetWindowAndroid()->RemoveObserver(this);
     observing_root_window_ = false;
   }
 
   bool resize = false;
   if (content_view_core != content_view_core_) {
+    selection_controller_.reset();
     ReleaseLocksOnSurface();
     resize = true;
   }
 
   content_view_core_ = content_view_core;
 
   if (GetBrowserAccessibilityManager()) {
     base::android::ScopedJavaLocalRef<jobject> obj;
     if (content_view_core_)
       obj = content_view_core_->GetJavaObject();
     GetBrowserAccessibilityManager()->ToBrowserAccessibilityManagerAndroid()->
         SetContentViewCore(obj);
   }
 
   AttachLayers();
-  if (content_view_core_ && !using_synchronous_compositor_) {
+
+  if (!content_view_core_)
+    return;
+
+  if (!using_synchronous_compositor_) {
     content_view_core_->GetWindowAndroid()->AddObserver(this);
     observing_root_window_ = true;
     if (needs_begin_frame_)
       content_view_core_->GetWindowAndroid()->RequestVSyncUpdate();
   }
 
-  if (resize && content_view_core_)
+  if (resize)
     WasResized();
+
+  if (!selection_controller_)
+    selection_controller_.reset(new TouchSelectionController(this));
 }
 
 void RenderWidgetHostViewAndroid::RunAckCallbacks() {
   while (!ack_callbacks_.empty()) {
     ack_callbacks_.front().Run();
     ack_callbacks_.pop();
   }
 }
 
 void RenderWidgetHostViewAndroid::OnGestureEvent(
@@ skipping 141 matching lines @@
   // supported we should go with that (this degrades quality)
   // or stick back to the default format.
   if (base::SysInfo::IsLowEndDevice()) {
     if (IsReadbackConfigSupported(kRGB_565_SkColorType))
       return kRGB_565_SkColorType;
   }
   return kN32_SkColorType;
 }
 
 void RenderWidgetHostViewAndroid::ShowSelectionHandlesAutomatically() {
-  if (content_view_core_)
-    content_view_core_->ShowSelectionHandlesAutomatically();
+  if (selection_controller_)
+    selection_controller_->AllowAutomaticSelectionShowing();

[aelias_OOO_until_Jul13, 2014/07/18 19:06:40]

nit: can this be renamed to be consistent with the method name through the rest
of the stack?  (ShowSelectionHandlesAutomatically)

[jdduke (slow), 2014/07/18 22:58:05]

Done.

 }
 
 void RenderWidgetHostViewAndroid::SelectRange(
     float x1, float y1, float x2, float y2) {
   if (content_view_core_)
     static_cast<WebContentsImpl*>(content_view_core_->GetWebContents())->
         SelectRange(gfx::Point(x1, y1), gfx::Point(x2, y2));
 }
 
 void RenderWidgetHostViewAndroid::Unselect() {
@@ skipping 21 matching lines @@
   results->orientationAngle = display.RotationAsDegree();
   results->orientationType =
       RenderWidgetHostViewBase::GetOrientationTypeForMobile(display);
   gfx::DeviceDisplayInfo info;
   results->depth = info.GetBitsPerPixel();
   results->depthPerComponent = info.GetBitsPerComponent();
   results->isMonochrome = (results->depthPerComponent == 0);
 }
 
 } // namespace content