Introduce ViewRoot to forward input/view events to native

content/browser/web_contents/web_contents_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/web_contents/web_contents_view_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
+#include "base/bind.h"
 #include "base/logging.h"
 #include "cc/layers/layer.h"
 #include "content/browser/android/content_view_core_impl.h"
 #include "content/browser/frame_host/interstitial_page_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 #include "content/browser/renderer_host/render_view_host_factory.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/common/drop_data.h"
 #include "ui/display/screen.h"
 #include "ui/gfx/android/device_display_info.h"
 #include "ui/gfx/android/java_bitmap.h"
 #include "ui/gfx/image/image_skia.h"
 
+using base::Bind;
+using base::Unretained;
 using base::android::AttachCurrentThread;
 using base::android::ConvertUTF16ToJavaString;
 using base::android::JavaRef;
 using base::android::ScopedJavaLocalRef;
 
 namespace content {
 
 // static
 void WebContentsView::GetDefaultScreenInfo(ScreenInfo* results) {
   const display::Display& display =
@@ skipping 42 matching lines @@
     WebContentsViewDelegate* delegate)
     : web_contents_(web_contents),
       content_view_core_(NULL),
       delegate_(delegate),
       synchronous_compositor_client_(nullptr) {
 }
 
 WebContentsViewAndroid::~WebContentsViewAndroid() {
   if (view_.GetLayer())
     view_.GetLayer()->RemoveFromParent();
+  view_.reset_physical_backing_size_changed_handler();
 }
 
 void WebContentsViewAndroid::SetContentViewCore(
     ContentViewCoreImpl* content_view_core) {
   content_view_core_ = content_view_core;
   RenderWidgetHostViewAndroid* rwhv = static_cast<RenderWidgetHostViewAndroid*>(
       web_contents_->GetRenderWidgetHostView());
   if (rwhv)
     rwhv->SetContentViewCore(content_view_core_);
 
   if (web_contents_->ShowingInterstitialPage()) {
     rwhv = static_cast<RenderWidgetHostViewAndroid*>(
         web_contents_->GetInterstitialPage()
             ->GetMainFrame()
             ->GetRenderViewHost()
             ->GetWidget()
             ->GetView());
     if (rwhv)
       rwhv->SetContentViewCore(content_view_core_);
   }
+
+  view_.reset_physical_backing_size_changed_handler(
+      Bind(&WebContentsViewAndroid::OnPhysicalBackingSizeChanged,
+           Unretained(this)));
+}
+
+void WebContentsViewAndroid::OnPhysicalBackingSizeChanged(int width,
+                                                          int height) {
+  gfx::Size physical_size(width, height);
+  view_.GetLayer()->SetBounds(physical_size);
+
+  RenderWidgetHostViewAndroid* rwhv = static_cast<RenderWidgetHostViewAndroid*>(
+      web_contents_->GetRenderWidgetHostView());
+  if (rwhv) {
+    web_contents_->SendScreenRects();
+    rwhv->WasResized();
+  }
 }
 
 gfx::NativeView WebContentsViewAndroid::GetNativeView() const {
   return const_cast<gfx::NativeView>(&view_);
 }
 
 gfx::NativeView WebContentsViewAndroid::GetContentNativeView() const {
   RenderWidgetHostView* rwhv = web_contents_->GetRenderWidgetHostView();
   if (rwhv)
     return rwhv->GetNativeView();
@@ skipping 231 matching lines @@
 // This is called when we the renderer asks us to take focus back (i.e., it has
 // iterated past the last focusable element on the page).
 void WebContentsViewAndroid::TakeFocus(bool reverse) {
   if (web_contents_->GetDelegate() &&
       web_contents_->GetDelegate()->TakeFocus(web_contents_, reverse))
     return;
   web_contents_->GetRenderWidgetHostView()->Focus();
 }
 
 } // namespace content