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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. AND ITS CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC.
* OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_FRAME_OVERLAY_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_FRAME_OVERLAY_H_
#include <memory>
#include "base/time/time.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/graphics/paint/display_item_client.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/member.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class GraphicsContext;
class LocalFrame;
class PropertyTreeState;
// Manages a layer that is overlaid on a WebLocalFrame's content.
class CORE_EXPORT FrameOverlay : public GarbageCollected<FrameOverlay>,
public DisplayItemClient {
public:
class Delegate {
public:
virtual ~Delegate() = default;
// Paints frame overlay contents.
virtual void PaintFrameOverlay(const FrameOverlay&,
GraphicsContext&,
const gfx::Size& view_size) const = 0;
// Invalidates composited layers managed by the delegate, if any.
virtual void Invalidate() {}
// Service any animations managed by the delegate.
virtual void ServiceScriptedAnimations(
base::TimeTicks monotonic_frame_begin_time) {}
};
// |Destroy()| should be called when it is no longer used.
FrameOverlay(LocalFrame*, std::unique_ptr<FrameOverlay::Delegate>);
~FrameOverlay() override;
void Destroy();
void UpdatePrePaint();
void Paint(GraphicsContext&) const;
// FrameOverlay is always the same size as the viewport.
gfx::Size Size() const;
const Delegate* GetDelegate() const { return delegate_.get(); }
const LocalFrame& Frame() const { return *frame_; }
// Services any animations that the overlay may be managing.
void ServiceScriptedAnimations(base::TimeTicks monotonic_frame_begin_time);
// DisplayItemClient.
String DebugName() const final { return "FrameOverlay"; }
void Trace(Visitor*) const override;
PropertyTreeState DefaultPropertyTreeState() const;
private:
Member<LocalFrame> frame_;
std::unique_ptr<FrameOverlay::Delegate> delegate_;
#if DCHECK_IS_ON()
bool is_destroyed_ = false;
#endif
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_FRAME_OVERLAY_H_
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