blob: 614ccd310471130d76c8de8f4a0e3b81adcb1bb0 [file] [log] [blame]
// Copyright 2014 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 "base/macros.h"
#include "cc/blink/web_layer_impl.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/transform.h"
namespace cc_blink {
// A special implementation of WebLayerImpl for layers that its contents
// need to be automatically scaled when the bounds changes. The compositor
// can efficiently handle the bounds change of such layers if the bounds
// is fixed to a given value and the change of bounds are converted to
// transformation scales.
class WebLayerImplFixedBounds : public WebLayerImpl {
CC_BLINK_EXPORT WebLayerImplFixedBounds();
CC_BLINK_EXPORT explicit WebLayerImplFixedBounds(
scoped_refptr<cc::Layer> layer);
~WebLayerImplFixedBounds() override;
// WebLayerImpl overrides.
void invalidateRect(const blink::WebRect& rect) override;
void setTransformOrigin(
const blink::WebFloatPoint3D& transform_origin) override;
void setBounds(const blink::WebSize& bounds) override;
blink::WebSize bounds() const override;
void setTransform(const SkMatrix44& transform) override;
SkMatrix44 transform() const override;
CC_BLINK_EXPORT void SetFixedBounds(gfx::Size bounds);
void SetTransformInternal(const gfx::Transform& transform);
void UpdateLayerBoundsAndTransform();
gfx::Transform original_transform_;
gfx::Size original_bounds_;
gfx::Size fixed_bounds_;
} // namespace cc_blink