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#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_TRANSFORMS_INTERPOLATED_TRANSFORM_OPERATION_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_TRANSFORMS_INTERPOLATED_TRANSFORM_OPERATION_H_
#include "third_party/blink/renderer/platform/transforms/transform_operation.h"
#include "third_party/blink/renderer/platform/transforms/transform_operations.h"
namespace blink {
// This class is an implementation detail for deferred interpolations.
class PLATFORM_EXPORT InterpolatedTransformOperation final
: public TransformOperation {
public:
static scoped_refptr<InterpolatedTransformOperation> Create(
const TransformOperations& from,
const TransformOperations& to,
int starting_index,
double progress) {
return base::AdoptRef(
new InterpolatedTransformOperation(from, to, starting_index, progress));
}
bool CanBlendWith(const TransformOperation& other) const override {
return IsSameType(other);
}
private:
OperationType GetType() const override { return kInterpolated; }
bool operator==(const TransformOperation&) const override;
void Apply(TransformationMatrix&,
const FloatSize& border_box_size) const override;
scoped_refptr<TransformOperation> Blend(
const TransformOperation* from,
double progress,
bool blend_to_identity = false) override;
scoped_refptr<TransformOperation> Zoom(double factor) final {
return Create(from_.Zoom(factor), to_.Zoom(factor), starting_index_,
progress_);
}
bool DependsOnBoxSize() const override {
return from_.DependsOnBoxSize() || to_.DependsOnBoxSize();
}
InterpolatedTransformOperation(const TransformOperations& from,
const TransformOperations& to,
int starting_index,
double progress)
: from_(from),
to_(to),
starting_index_(starting_index),
progress_(progress) {}
const TransformOperations from_;
const TransformOperations to_;
// Number of operations to skip from the start of each list. By spec,
// pairwise interpolations are performed for compatible operations at the
// start of the list and matrix interpolation for the remainder.
int starting_index_;
double progress_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_TRANSFORMS_INTERPOLATED_TRANSFORM_OPERATION_H_