1 files changed, 124 insertions, 0 deletions
diff --git a/ui/base/animation/animation.cc b/ui/base/animation/animation.cc
new file mode 100644
index 0000000..1824774
--- /dev/null
+++ b/ui/base/animation/animation.cc
@@ -0,0 +1,124 @@
+// Copyright (c) 2011 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/base/animation/animation.h"
+
+#include "gfx/rect.h"
+#include "ui/base/animation/animation_container.h"
+#include "ui/base/animation/animation_delegate.h"
+#include "ui/base/animation/tween.h"
+
+#if defined(OS_WIN)
+#include "base/win/windows_version.h"
+#endif
+
+namespace ui {
+
+Animation::Animation(base::TimeDelta timer_interval)
+    : timer_interval_(timer_interval),
+      is_animating_(false),
+      delegate_(NULL) {
+}
+
+Animation::~Animation() {
+  // Don't send out notification from the destructor. Chances are the delegate
+  // owns us and is being deleted as well.
+  if (is_animating_)
+    container_->Stop(this);
+}
+
+void Animation::Start() {
+  if (is_animating_)
+    return;
+
+  if (!container_.get())
+    container_ = new AnimationContainer();
+
+  is_animating_ = true;
+
+  container_->Start(this);
+
+  AnimationStarted();
+}
+
+void Animation::Stop() {
+  if (!is_animating_)
+    return;
+
+  is_animating_ = false;
+
+  // Notify the container first as the delegate may delete us.
+  container_->Stop(this);
+
+  AnimationStopped();
+
+  if (delegate_) {
+    if (ShouldSendCanceledFromStop())
+      delegate_->AnimationCanceled(this);
+    else
+      delegate_->AnimationEnded(this);
+  }
+}
+
+double Animation::CurrentValueBetween(double start, double target) const {
+  return Tween::ValueBetween(GetCurrentValue(), start, target);
+}
+
+int Animation::CurrentValueBetween(int start, int target) const {
+  return Tween::ValueBetween(GetCurrentValue(), start, target);
+}
+
+gfx::Rect Animation::CurrentValueBetween(const gfx::Rect& start_bounds,
+                                         const gfx::Rect& target_bounds) const {
+  return Tween::ValueBetween(GetCurrentValue(), start_bounds, target_bounds);
+}
+
+void Animation::SetContainer(AnimationContainer* container) {
+  if (container == container_.get())
+    return;
+
+  if (is_animating_)
+    container_->Stop(this);
+
+  if (container)
+    container_ = container;
+  else
+    container_ = new AnimationContainer();
+
+  if (is_animating_)
+    container_->Start(this);
+}
+
+// static
+bool Animation::ShouldRenderRichAnimation() {
+#if defined(OS_WIN)
+  if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
+    BOOL result;
+    // Get "Turn off all unnecessary animations" value.
+    if (::SystemParametersInfo(SPI_GETCLIENTAREAANIMATION, 0, &result, 0)) {
+      // There seems to be a typo in the MSDN document (as of May 2009):
+      //   http://msdn.microsoft.com/en-us/library/ms724947(VS.85).aspx
+      // The document states that the result is TRUE when animations are
+      // _disabled_, but in fact, it is TRUE when they are _enabled_.
+      return !!result;
+    }
+  }
+  return !::GetSystemMetrics(SM_REMOTESESSION);
+#endif
+  return true;
+}
+
+bool Animation::ShouldSendCanceledFromStop() {
+  return false;
+}
+
+void Animation::SetStartTime(base::TimeTicks start_time) {
+  start_time_ = start_time;
+}
+
+base::TimeDelta Animation::GetTimerInterval() const {
+  return timer_interval_;
+}
+
+}  // namespace ui