Refactoring to make adding ink drop animations easier

ui/views/animation/toolbar_ink_drop_delegate.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 "ui/events/event.h"
+#include "ui/views/animation/ink_drop_animation_controller.h"
+#include "ui/views/animation/ink_drop_animation_controller_factory.h"
+#include "ui/views/animation/ink_drop_host.h"
+#include "ui/views/animation/ink_drop_state.h"
+#include "ui/views/animation/toolbar_ink_drop_delegate.h"
+
+namespace views {
+
+ToolbarInkDropDelegate::ToolbarInkDropDelegate(InkDropHost* ink_drop_host)
+    : ink_drop_host_(ink_drop_host),
+      ink_drop_animation_controller_(
+          views::InkDropAnimationControllerFactory::
+              CreateInkDropAnimationController(ink_drop_host_)) {}
+
+ToolbarInkDropDelegate::~ToolbarInkDropDelegate() {}
+
+void ToolbarInkDropDelegate::SetInkDropSize(int large_size,
+                                            int large_corner_radius,
+                                            int small_size,
+                                            int small_corner_radius) {
+  ink_drop_animation_controller_->SetInkDropSize(
+      gfx::Size(large_size, large_size), large_corner_radius,
+      gfx::Size(small_size, small_size), small_corner_radius);
+}
+
+void ToolbarInkDropDelegate::Layout() {
+  ink_drop_animation_controller_->SetInkDropCenter(
+      ink_drop_host_->CalculateInkDropCenter());
+}
+
+void ToolbarInkDropDelegate::OnGestureEvent(const ui::GestureEvent& event) {
+  views::InkDropState ink_drop_state = views::InkDropState::HIDDEN;
+  switch (event.type()) {
+    case ui::ET_GESTURE_TAP_DOWN:
+      ink_drop_state = views::InkDropState::ACTION_PENDING;
+      break;
+    case ui::ET_GESTURE_LONG_PRESS:
+      ink_drop_state = views::InkDropState::SLOW_ACTION_PENDING;
+      break;
+    case ui::ET_GESTURE_LONG_TAP:
+      ink_drop_state = views::InkDropState::SLOW_ACTION;
+      break;
+    case ui::ET_GESTURE_SCROLL_BEGIN:
+    case ui::ET_GESTURE_END:
+      ink_drop_state = views::InkDropState::HIDDEN;
+      break;
+    default:
+      return;
+  }
+
+  views::InkDropState current_ink_drop_state =
+      ink_drop_animation_controller_->GetInkDropState();
+
+  if (ink_drop_state == views::InkDropState::HIDDEN &&
+      (current_ink_drop_state == views::InkDropState::QUICK_ACTION ||
+       current_ink_drop_state == views::InkDropState::SLOW_ACTION ||
+       current_ink_drop_state == views::InkDropState::DEACTIVATED)) {
+    // These InkDropStates automatically transition to the HIDDEN state so we
+    // don't make an explicit call. Explicitly animating to HIDDEN in this case
+    // would prematurely pre-empt these animations.
+    return;
+  }
+  ink_drop_animation_controller_->AnimateToState(ink_drop_state);
+}
+
+void ToolbarInkDropDelegate::OnActionComplete() {
+  ink_drop_animation_controller_->AnimateToState(views::InkDropState::HIDDEN);
+}
+
+void ToolbarInkDropDelegate::OnActionPending(const ui::Event& event) {
+  ink_drop_animation_controller_->AnimateToState(
+      views::InkDropState::ACTION_PENDING);
+}
+
+void ToolbarInkDropDelegate::OnActionQuick() {
+  ink_drop_animation_controller_->AnimateToState(
+      views::InkDropState::QUICK_ACTION);
+}
+
+void ToolbarInkDropDelegate::OnActivated() {
+  ink_drop_animation_controller_->AnimateToState(
+      views::InkDropState::ACTIVATED);
+}
+
+void ToolbarInkDropDelegate::OnDeactivated() {
+  ink_drop_animation_controller_->AnimateToState(
+      views::InkDropState::DEACTIVATED);
+}
+
+}  // namespace views