blob: 07c461cd90de413324d168a0ed7509cf1deb5d4e [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 "cc/blink/web_layer_impl.h"
#include "ui/gfx/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>);
virtual ~WebLayerImplFixedBounds();
// WebLayerImpl overrides.
virtual void invalidateRect(const blink::WebFloatRect& rect);
virtual void setTransformOrigin(
const blink::WebFloatPoint3D& transform_origin);
virtual void setBounds(const blink::WebSize& bounds);
virtual blink::WebSize bounds() const;
virtual void setTransform(const SkMatrix44& transform);
virtual SkMatrix44 transform() const;
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