Added material design mouse hover feedback support.

chrome/browser/ui/views/bar_control_button.cc

 // Copyright 2015 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 "chrome/browser/ui/views/bar_control_button.h"
 
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/paint_vector_icon.h"
 #include "ui/gfx/vector_icons_public.h"
 #include "ui/views/animation/ink_drop_animation_controller.h"
 #include "ui/views/animation/ink_drop_animation_controller_factory.h"
 #include "ui/views/border.h"
 
 namespace {
 
 // Extra space around the buttons to increase their event target size.
 const int kButtonExtraTouchSize = 4;
 
 }  // namespace
 
 BarControlButton::BarControlButton(views::ButtonListener* listener)
     : views::ImageButton(listener),
       id_(gfx::VectorIconId::VECTOR_ICON_NONE),
       ink_drop_animation_controller_(
           views::InkDropAnimationControllerFactory::
-              CreateInkDropAnimationController(this)) {
+              CreateInkDropAnimationController(this, this)) {
   const int kInkDropLargeSize = 32;
   const int kInkDropLargeCornerRadius = 4;
   const int kInkDropSmallSize = 24;
   const int kInkDropSmallCornerRadius = 2;
   ink_drop_animation_controller_->SetInkDropSize(
       gfx::Size(kInkDropLargeSize, kInkDropLargeSize),
       kInkDropLargeCornerRadius,
       gfx::Size(kInkDropSmallSize, kInkDropSmallSize),
       kInkDropSmallCornerRadius);
 }
@@ skipping 85 matching lines @@
   ImageButton::OnGestureEvent(event);
 }
 
 void BarControlButton::OnMouseReleased(const ui::MouseEvent& event) {
   if (!HitTestPoint(event.location()))
     ink_drop_animation_controller_->AnimateToState(views::InkDropState::HIDDEN);
 
   ImageButton::OnMouseReleased(event);
 }
 
+void BarControlButton::OnMouseEntered(const ui::MouseEvent& event) {
+  UpdateInkDropHoverState();
+}
+
+void BarControlButton::OnMouseExited(const ui::MouseEvent& event) {
+  UpdateInkDropHoverState();
+}
+
 void BarControlButton::NotifyClick(const ui::Event& event) {
   ink_drop_animation_controller_->AnimateToState(
       views::InkDropState::QUICK_ACTION);
 
   ImageButton::NotifyClick(event);
 }
+
+void BarControlButton::OnEnabledChanged() {
+  UpdateInkDropHoverState();
+}
+
+void BarControlButton::UpdateInkDropHoverState() {
+  ink_drop_animation_controller_->SetHovered(ShouldShowInkDropHover());
+}