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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_ANIMATION_FILTER_ANIMATION_CURVE_H_
#define CC_ANIMATION_FILTER_ANIMATION_CURVE_H_
#include <memory>
#include <utility>
#include <vector>
#include "ui/gfx/animation/keyframe/keyframed_animation_curve.h"
#include "cc/animation/animation_export.h"
#include "cc/paint/filter_operations.h"
namespace cc {
class CC_ANIMATION_EXPORT FilterAnimationCurve : public gfx::AnimationCurve {
DECLARE_ANIMATION_CURVE_BODY(FilterOperations, Filter)
};
class CC_ANIMATION_EXPORT FilterKeyframe : public gfx::Keyframe {
public:
static std::unique_ptr<FilterKeyframe> Create(
base::TimeDelta time,
const FilterOperations& value,
std::unique_ptr<gfx::TimingFunction> timing_function);
~FilterKeyframe() override;
const FilterOperations& Value() const;
std::unique_ptr<FilterKeyframe> Clone() const;
private:
FilterKeyframe(base::TimeDelta time,
const FilterOperations& value,
std::unique_ptr<gfx::TimingFunction> timing_function);
FilterOperations value_;
};
class CC_ANIMATION_EXPORT KeyframedFilterAnimationCurve
: public FilterAnimationCurve {
public:
// It is required that the keyframes be sorted by time.
static std::unique_ptr<KeyframedFilterAnimationCurve> Create();
KeyframedFilterAnimationCurve(const KeyframedFilterAnimationCurve&) = delete;
~KeyframedFilterAnimationCurve() override;
KeyframedFilterAnimationCurve& operator=(
const KeyframedFilterAnimationCurve&) = delete;
void AddKeyframe(std::unique_ptr<FilterKeyframe> keyframe);
void SetTimingFunction(std::unique_ptr<gfx::TimingFunction> timing_function) {
timing_function_ = std::move(timing_function);
}
double scaled_duration() const { return scaled_duration_; }
void set_scaled_duration(double scaled_duration) {
scaled_duration_ = scaled_duration;
}
// AnimationCurve implementation
base::TimeDelta Duration() const override;
std::unique_ptr<gfx::AnimationCurve> Clone() const override;
base::TimeDelta TickInterval() const override;
// FilterAnimationCurve implementation
FilterOperations GetValue(base::TimeDelta t) const override;
FilterOperations GetTransformedValue(
base::TimeDelta t,
gfx::TimingFunction::LimitDirection limit_direction) const override;
private:
KeyframedFilterAnimationCurve();
// Always sorted in order of increasing time. No two keyframes have the
// same time.
std::vector<std::unique_ptr<FilterKeyframe>> keyframes_;
std::unique_ptr<gfx::TimingFunction> timing_function_;
double scaled_duration_;
};
} // namespace cc
#endif // CC_ANIMATION_FILTER_ANIMATION_CURVE_H_
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