Adds link disambiguation popup support to Windows.

content/browser/web_contents/web_contents_view_aura.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_aura.h"
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/download/drag_download_util.h"
 #include "content/browser/frame_host/interstitial_page_impl.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
 #include "content/browser/renderer_host/dip_util.h"
 #include "content/browser/renderer_host/overscroll_controller.h"
 #include "content/browser/renderer_host/render_view_host_factory.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
+#include "content/browser/renderer_host/web_input_event_aura.h"
 #include "content/browser/web_contents/aura/gesture_nav_simple.h"
 #include "content/browser/web_contents/aura/image_window_delegate.h"
 #include "content/browser/web_contents/aura/overscroll_navigation_overlay.h"
 #include "content/browser/web_contents/aura/shadow_layer_delegate.h"
 #include "content/browser/web_contents/aura/window_slider.h"
 #include "content/browser/web_contents/touch_editable_impl_aura.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/overscroll_configuration.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_view_delegate.h"
 #include "content/public/browser/web_drag_dest_delegate.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/drop_data.h"
 #include "net/base/filename_util.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "ui/aura/client/aura_constants.h"
+#include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/client/window_tree_client.h"
 #include "ui/aura/env.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_observer.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/aura/window_tree_host_observer.h"
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/base/clipboard/custom_data_helper.h"
 #include "ui/base/dragdrop/drag_drop_types.h"
 #include "ui/base/dragdrop/drag_utils.h"
@@ skipping 737 matching lines @@
     return;
   }
   view->overscroll_controller()->set_delegate(this);
   if (!navigation_overlay_)
     navigation_overlay_.reset(new OverscrollNavigationOverlay(web_contents_));
 }
 
 void WebContentsViewAura::PrepareOverscrollWindow() {
   // If there is an existing |overscroll_window_| which is in the middle of an
   // animation, then destroying the window here causes the animation to be
-  // completed immidiately, which triggers |OnImplicitAnimationsCompleted()|
+  // completed immediately, which triggers |OnImplicitAnimationsCompleted()|
   // callback, and that tries to reset |overscroll_window_| again, causing a
   // double-free. So use a temporary variable here.
   if (overscroll_window_) {
     base::AutoReset<OverscrollMode> reset_state(&current_overscroll_gesture_,
                                                 current_overscroll_gesture_);
     scoped_ptr<aura::Window> reset_window(overscroll_window_.release());
   }
 
   OverscrollWindowDelegate* overscroll_delegate = new OverscrollWindowDelegate(
       web_contents_,
@@ skipping 157 matching lines @@
   RenderWidgetHostViewAura* rwhva = ToRenderWidgetHostViewAura(
       web_contents_->GetRenderWidgetHostView());
   touch_editable_->AttachToView(rwhva);
 }
 
 void WebContentsViewAura::OverscrollUpdateForWebContentsDelegate(int delta_y) {
   if (web_contents_->GetDelegate() && IsScrollEndEffectEnabled())
     web_contents_->GetDelegate()->OverscrollUpdate(delta_y);
 }
 
+void WebContentsViewAura::ProcessLinkDisambiguationGesture(
+    ui::GestureEvent* event) {
+  blink::WebGestureEvent web_gesture = content::MakeWebGestureEvent(event);
+  // If we fail to make a WebGestureEvent that is a Tap from the provided event,
+  // don't forward it to Blink.
+  if (web_gesture.type < blink::WebInputEvent::Type::GestureTap ||
+      web_gesture.type > blink::WebInputEvent::Type::GestureTapCancel)
+    return;
+
+  RenderWidgetHostViewAura* rwhva = ToRenderWidgetHostViewAura(
+      web_contents_->GetRenderWidgetHostView());
+  RenderWidgetHostImpl* host = RenderWidgetHostImpl::From(
+      rwhva->GetRenderWidgetHost());
+  host->ForwardGestureEvent(web_gesture);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // WebContentsViewAura, WebContentsView implementation:
 
 gfx::NativeView WebContentsViewAura::GetNativeView() const {
   return window_.get();
 }
 
 gfx::NativeView WebContentsViewAura::GetContentNativeView() const {
   RenderWidgetHostView* rwhv = web_contents_->GetRenderWidgetHostView();
   return rwhv ? rwhv->GetNativeView() : NULL;
@@ skipping 456 matching lines @@
 void WebContentsViewAura::OnWindowTargetVisibilityChanged(bool visible) {
 }
 
 bool WebContentsViewAura::HasHitTestMask() const {
   return false;
 }
 
 void WebContentsViewAura::GetHitTestMask(gfx::Path* mask) const {
 }
 
+void WebContentsViewAura::OnLinkDisambiguationPopupRequested(
+    const gfx::Rect& target_rect, const SkBitmap& zoomed_bitmap) {
+  // |target_rect| is provided in pixels, not DIPs. So we convert it to DIPs
+  // by dividing by the device scale factor.
+  gfx::Screen* screen = gfx::Screen::GetScreenFor(window_.get());
+  if (!screen) return;
+  float device_scale_factor = screen->GetDisplayNearestWindow(
+      window_.get()).device_scale_factor();
+  gfx::RectF screen_target_rect_f(target_rect);
+  screen_target_rect_f.Scale(1.0f / device_scale_factor);
+  gfx::Rect screen_target_rect(gfx::ToEnclosingRect(screen_target_rect_f));
+
+  if (delegate_) {
+    delegate_->ShowLinkDisambiguationPopup(
+        screen_target_rect,
+        zoomed_bitmap,
+        window_.get(),
+        base::Bind(&WebContentsViewAura::ProcessLinkDisambiguationGesture,
+            base::Unretained(this)));
+  }
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // WebContentsViewAura, ui::EventHandler implementation:
 
 void WebContentsViewAura::OnKeyEvent(ui::KeyEvent* event) {
 }
 
 void WebContentsViewAura::OnMouseEvent(ui::MouseEvent* event) {
   if (!web_contents_->GetDelegate())
     return;
 
@@ skipping 139 matching lines @@
   if (visible) {
     if (!web_contents_->should_normally_be_visible())
       web_contents_->WasShown();
   } else {
     if (web_contents_->should_normally_be_visible())
       web_contents_->WasHidden();
   }
 }
 
 }  // namespace content