CustomButton: restrict animation repaints to buttons that actually animate

ui/views/examples/button_example.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 "ui/views/examples/button_example.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/image/image.h"
 #include "ui/resources/grit/ui_resources.h"
@@ skipping 41 matching lines @@
   styled_button_->SetStyle(Button::STYLE_BUTTON);
   container->AddChildView(styled_button_);
 
   disabled_button_ = new LabelButton(this, ASCIIToUTF16("Disabled Button"));
   disabled_button_->SetStyle(Button::STYLE_BUTTON);
   disabled_button_->SetState(Button::STATE_DISABLED);
   container->AddChildView(disabled_button_);
 
   container->AddChildView(new BlueButton(this, ASCIIToUTF16("Blue Button")));
 
-  container->AddChildView(
-      MdTextButton::Create(nullptr, base::ASCIIToUTF16("Material design")));
-  MdTextButton* md_button =
-      MdTextButton::Create(nullptr, base::ASCIIToUTF16("Default"));
-  md_button->SetIsDefault(true);
-  container->AddChildView(md_button);
-  md_button =
-      MdTextButton::Create(nullptr, base::ASCIIToUTF16("Call to action"));
-  md_button->SetProminent(true);
-  container->AddChildView(md_button);
+  md_button_ =
+      MdTextButton::Create(this, base::ASCIIToUTF16("Material design"));
+  container->AddChildView(md_button_);
+
+  md_default_button_ =
+      MdTextButton::Create(this, base::ASCIIToUTF16("Default"));
+  md_default_button_->SetIsDefault(true);
+  container->AddChildView(md_default_button_);
+
+  md_prominent_button_ =
+      MdTextButton::Create(this, base::ASCIIToUTF16("Call to action"));
+  md_prominent_button_->SetProminent(true);
+  container->AddChildView(md_prominent_button_);
 
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   image_button_ = new ImageButton(this);
   image_button_->SetFocusForPlatform();
   image_button_->set_request_focus_on_press(true);
   image_button_->SetImage(ImageButton::STATE_NORMAL,
                           rb.GetImageNamed(IDR_CLOSE).ToImageSkia());
   image_button_->SetImage(ImageButton::STATE_HOVERED,
                           rb.GetImageNamed(IDR_CLOSE_H).ToImageSkia());
   image_button_->SetImage(ImageButton::STATE_PRESSED,
@@ skipping 33 matching lines @@
     }
   } else if (event.IsAltDown()) {
     label_button->SetIsDefault(!label_button->is_default());
   } else {
     label_button->SetMinSize(gfx::Size());
   }
   example_view()->GetLayoutManager()->Layout(example_view());
 }
 
 void ButtonExample::ButtonPressed(Button* sender, const ui::Event& event) {
-  if (sender == label_button_)
+  if (sender == label_button_) {
     LabelButtonPressed(label_button_, event);
-  else if (sender == styled_button_)
+  } else if (sender == styled_button_) {
     LabelButtonPressed(styled_button_, event);
-  else if (sender == disabled_button_)
+  } else if (sender == disabled_button_) {
     LabelButtonPressed(disabled_button_, event);
-  else
+  } else if (sender == md_button_ || sender == md_default_button_ ||
+             sender == md_prominent_button_) {
+    static_cast<CustomButton*>(sender)->StartThrobbing(5);
+  } else {
     PrintStatus("Image Button Pressed! count: %d", ++count_);
+  }
 }
 
 }  // namespace examples
 }  // namespace views