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/*
* Copyright (C) 2022 Apple 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 APPLE INC. ``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 APPLE INC. OR
* 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.
*/
#pragma once
#include "FloatRect.h"
#include "PositionedGlyphs.h"
#include "RenderingResourceIdentifier.h"
#include <wtf/HashSet.h>
#include <wtf/ThreadSafeRefCounted.h>
namespace WebCore {
class DecomposedGlyphs : public ThreadSafeRefCounted<DecomposedGlyphs, WTF::DestructionThread::Main>, public CanMakeWeakPtr<DecomposedGlyphs> {
WTF_MAKE_FAST_ALLOCATED;
public:
class Observer {
public:
virtual ~Observer() = default;
virtual void releaseDecomposedGlyphs(RenderingResourceIdentifier) = 0;
protected:
Observer() = default;
};
static WEBCORE_EXPORT Ref<DecomposedGlyphs> create(const GlyphBufferGlyph*, const GlyphBufferAdvance*, unsigned count, const FloatPoint& localAnchor, FontSmoothingMode, RenderingResourceIdentifier = RenderingResourceIdentifier::generate());
static WEBCORE_EXPORT Ref<DecomposedGlyphs> create(PositionedGlyphs&&, RenderingResourceIdentifier);
WEBCORE_EXPORT ~DecomposedGlyphs();
const PositionedGlyphs& positionedGlyphs() const { return m_positionedGlyphs; }
void addObserver(Observer& observer) { m_observers.add(&observer); }
void removeObserver(Observer& observer) { m_observers.remove(&observer); }
RenderingResourceIdentifier renderingResourceIdentifier() const { return m_renderingResourceIdentifier; }
private:
DecomposedGlyphs(const GlyphBufferGlyph*, const GlyphBufferAdvance*, unsigned count, const FloatPoint& localAnchor, FontSmoothingMode, RenderingResourceIdentifier);
DecomposedGlyphs(PositionedGlyphs&&, RenderingResourceIdentifier);
PositionedGlyphs m_positionedGlyphs;
HashSet<Observer*> m_observers;
RenderingResourceIdentifier m_renderingResourceIdentifier;
};
} // namespace WebCore
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