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// 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/gfx/animation/animation.h"
#include "ui/gfx/animation/animation_container.h"
#include "ui/gfx/animation/animation_delegate.h"
#include "ui/gfx/animation/tween.h"
#include "ui/gfx/geometry/rect.h"
#if defined(OS_WIN)
#include "base/win/windows_version.h"
#endif
namespace gfx {
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::DoubleValueBetween(GetCurrentValue(), start, target);
}
int Animation::CurrentValueBetween(int start, int target) const {
return Tween::IntValueBetween(GetCurrentValue(), start, target);
}
gfx::Rect Animation::CurrentValueBetween(const gfx::Rect& start_bounds,
const gfx::Rect& target_bounds) const {
return Tween::RectValueBetween(
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);
#else
return true;
#endif
}
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 gfx
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