Route selection bounds updates through the compositor

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/android/sys_utils.h"
 #include "base/basictypes.h"
@@ skipping 171 matching lines @@
       ime_adapter_android_(this),
       cached_background_color_(SK_ColorWHITE),
       last_output_surface_id_(kUndefinedOutputSurfaceId),
       weak_ptr_factory_(this),
       overscroll_effect_enabled_(!CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableOverscrollEdgeEffect)),
       overscroll_effect_(OverscrollGlow::Create(overscroll_effect_enabled_)),
       gesture_provider_(CreateGestureProviderConfig(), this),
       flush_input_requested_(false),
       accelerated_surface_route_id_(0),
+      cached_selection_anchor_visible_(false),
+      cached_selection_focus_visible_(false),
       using_synchronous_compositor_(SynchronousCompositorImpl::FromID(
                                         widget_host->GetProcess()->GetID(),
                                         widget_host->GetRoutingID()) != NULL),
       frame_evictor_(new DelegatedFrameEvictor(this)),
       locks_on_frame_count_(0),
       observing_root_window_(false) {
   host_->SetView(this);
   SetContentViewCore(content_view_core);
   ImageTransportFactoryAndroid::AddObserver(this);
 }
@@ skipping 426 matching lines @@
     return;
   }
 
   std::string utf8_selection = base::UTF16ToUTF8(text.substr(pos, n));
 
   content_view_core_->OnSelectionChanged(utf8_selection);
 }
 
 void RenderWidgetHostViewAndroid::SelectionBoundsChanged(
     const ViewHostMsg_SelectionBounds_Params& params) {
-  if (content_view_core_) {
-    content_view_core_->OnSelectionBoundsChanged(params);
-  }
+  if (!content_view_core_)
+    return;
+
+  const gfx::PointF anchor = params.anchor_rect.bottom_left();
+  const gfx::PointF focus = params.focus_rect.bottom_left();
+
+  if (cached_selection_anchor_ == anchor && cached_selection_focus_ == focus &&
+      cached_selection_anchor_visible_ == params.is_anchor_visible &&
+      cached_selection_focus_visible_ == params.is_focus_visible)
+    return;
+
+  cached_selection_anchor_ = anchor;
+  cached_selection_focus_ = focus;
+  cached_selection_anchor_visible_ = params.is_anchor_visible;
+  cached_selection_focus_visible_ = params.is_focus_visible;
+
+  content_view_core_->OnSelectionBoundsChanged(anchor,
+                                               focus,
+                                               params.anchor_dir,
+                                               params.focus_dir,
+                                               params.is_anchor_first,
+                                               params.is_anchor_visible,
+                                               params.is_focus_visible);
 }
 
 void RenderWidgetHostViewAndroid::ScrollOffsetChanged() {
 }
 
 void RenderWidgetHostViewAndroid::SetBackgroundOpaque(bool opaque) {
   RenderWidgetHostViewBase::SetBackgroundOpaque(opaque);
   host_->SetBackgroundOpaque(opaque);
 }
 
@@ skipping 327 matching lines @@
   content_view_core_->UpdateFrameInfo(
       frame_metadata.root_scroll_offset,
       frame_metadata.page_scale_factor,
       gfx::Vector2dF(frame_metadata.min_page_scale_factor,
                      frame_metadata.max_page_scale_factor),
       frame_metadata.root_layer_size,
       frame_metadata.viewport_size,
       frame_metadata.location_bar_offset,
       frame_metadata.location_bar_content_translation,
       frame_metadata.overdraw_bottom_height);
+
 #if defined(VIDEO_HOLE)
   if (host_ && host_->IsRenderView()) {
     RenderViewHostImpl* rvhi = static_cast<RenderViewHostImpl*>(
         RenderViewHost::From(host_));
     rvhi->media_web_contents_observer()->OnFrameInfoUpdated();
   }
 #endif  // defined(VIDEO_HOLE)
 }
 
 void RenderWidgetHostViewAndroid::AcceleratedSurfaceInitialized(int host_id,
@@ skipping 446 matching lines @@
   results->availableRect = display.work_area();
   results->deviceScaleFactor = display.device_scale_factor();
   results->orientationAngle = display.RotationAsDegree();
   gfx::DeviceDisplayInfo info;
   results->depth = info.GetBitsPerPixel();
   results->depthPerComponent = info.GetBitsPerComponent();
   results->isMonochrome = (results->depthPerComponent == 0);
 }
 
 } // namespace content