Disable the stop button when the user is hovering it and the page finishes lo...

views/controls/button/custom_button.cc

 // Copyright (c) 2010 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 "views/controls/button/custom_button.h"
 
 #include "app/throb_animation.h"
 #include "base/keyboard_codes.h"
+#include "views/screen.h"
 
 namespace views {
 
 // How long the hover animation takes if uninterrupted.
 static const int kHoverFadeDurationMs = 150;
 
 ////////////////////////////////////////////////////////////////////////////////
 // CustomButton, public:
 
 CustomButton::~CustomButton() {
@@ skipping 45 matching lines @@
     case BS_NORMAL:
     case BS_COUNT:
       // No additional accessibility state set for this button state.
       break;
   }
 
   return true;
 }
 
 void CustomButton::SetEnabled(bool enabled) {
-  if (enabled ? (state_ == BS_DISABLED) : (state_ != BS_DISABLED))
-    SetState(enabled ? BS_NORMAL : BS_DISABLED);
+  if (enabled ? (state_ != BS_DISABLED) : (state_ == BS_DISABLED))
+    return;
+
+  if (enabled)
+    SetState(IsMouseHovered() ? BS_HOT : BS_NORMAL);
+  else
+    SetState(BS_DISABLED);
 }
 
 bool CustomButton::IsEnabled() const {
   return state_ != BS_DISABLED;
 }
 
 bool CustomButton::IsFocusable() const {
   return (state_ != BS_DISABLED) && View::IsFocusable();
 }
 
+bool CustomButton::IsMouseHovered() const {
+  // If we haven't yet been placed in an onscreen view hierarchy, we can't be
+  // hovered.
+  if (!GetWidget())
+    return false;
+
+  gfx::Point cursor_pos(Screen::GetCursorScreenPoint());
+  ConvertPointToView(NULL, this, &cursor_pos);
+  return HitTest(cursor_pos);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // CustomButton, protected:
 
 CustomButton::CustomButton(ButtonListener* listener)
     : Button(listener),
       state_(BS_NORMAL),
       animate_on_state_change_(true),
       triggerable_event_flags_(MouseEvent::EF_LEFT_BUTTON_DOWN),
       request_focus_on_press_(true) {
   hover_animation_.reset(new ThrobAnimation(this));
@@ skipping 140 matching lines @@
 
 void CustomButton::AnimationProgressed(const Animation* animation) {
   SchedulePaint();
 }
 
 bool CustomButton::ShouldEnterPushedState(const MouseEvent& e) {
   return IsTriggerableEvent(e);
 }
 
 }  // namespace views