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// 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.
#ifndef CC_ANIMATION_LAYER_TREE_MUTATION_H_
#define CC_ANIMATION_LAYER_TREE_MUTATION_H_
#include "base/containers/hash_tables.h"
#include "cc/animation/mutable_properties.h"
#include "third_party/skia/include/utils/SkMatrix44.h"
namespace cc {
class LayerTreeMutation {
public:
void SetOpacity(float opacity) {
mutated_flags_ |= kMutablePropertyOpacity;
opacity_ = opacity;
}
void SetScrollLeft(float scroll_left) {
mutated_flags_ |= kMutablePropertyScrollLeft;
scroll_left_ = scroll_left;
}
void SetScrollTop(float scroll_top) {
mutated_flags_ |= kMutablePropertyScrollTop;
scroll_top_ = scroll_top;
}
void SetTransform(const SkMatrix44& transform) {
mutated_flags_ |= kMutablePropertyTransform;
transform_ = transform;
}
bool is_opacity_mutated() const {
return !!(mutated_flags_ & kMutablePropertyOpacity);
}
bool is_scroll_left_mutated() const {
return !!(mutated_flags_ & kMutablePropertyScrollLeft);
}
bool is_scroll_top_mutated() const {
return !!(mutated_flags_ & kMutablePropertyScrollTop);
}
bool is_transform_mutated() const {
return !!(mutated_flags_ & kMutablePropertyTransform);
}
float opacity() const { return opacity_; }
float scroll_left() const { return scroll_left_; }
float scroll_top() const { return scroll_top_; }
SkMatrix44 transform() const { return transform_; }
private:
uint32_t mutated_flags_ = 0;
float opacity_ = 0;
float scroll_left_ = 0;
float scroll_top_ = 0;
SkMatrix44 transform_;
};
typedef base::hash_map<uint64_t, LayerTreeMutation> LayerTreeMutationMap;
} // namespace cc
#endif // CC_ANIMATION_LAYER_TREE_MUTATION_H_
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