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/*
* Copyright (C) 2021 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. 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 APPLE 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.
*/
#pragma once
#include "FontPaletteValues.h"
#include "FontSelectionAlgorithm.h"
#include "FontTaggedSettings.h"
#include <wtf/PointerComparison.h>
namespace WebCore {
class FontCreationContextRareData : public RefCounted<FontCreationContextRareData> {
public:
static Ref<FontCreationContextRareData> create(const FontFeatureSettings& fontFaceFeatures, const FontPaletteValues& fontPaletteValues)
{
return adoptRef(*new FontCreationContextRareData(fontFaceFeatures, fontPaletteValues));
}
const FontFeatureSettings& fontFaceFeatures() const
{
return m_fontFaceFeatures;
}
const FontPaletteValues& fontPaletteValues() const
{
return m_fontPaletteValues;
}
bool operator==(const FontCreationContextRareData& other) const
{
return m_fontFaceFeatures == other.m_fontFaceFeatures
&& m_fontPaletteValues == other.m_fontPaletteValues;
}
bool operator!=(const FontCreationContextRareData& other) const
{
return !(*this == other);
}
private:
FontCreationContextRareData(const FontFeatureSettings& fontFaceFeatures, const FontPaletteValues& fontPaletteValues)
: m_fontFaceFeatures(fontFaceFeatures)
, m_fontPaletteValues(fontPaletteValues)
{
}
FontFeatureSettings m_fontFaceFeatures;
FontPaletteValues m_fontPaletteValues;
// FIXME: Add support for font-feature-values.
};
class FontCreationContext {
public:
FontCreationContext() = default;
FontCreationContext(const FontFeatureSettings& fontFaceFeatures, const FontSelectionSpecifiedCapabilities& fontFaceCapabilities, const FontPaletteValues& fontPaletteValues)
: m_fontFaceCapabilities(fontFaceCapabilities)
{
if (!fontFaceFeatures.isEmpty() || fontPaletteValues)
m_rareData = FontCreationContextRareData::create(fontFaceFeatures, fontPaletteValues);
}
const FontFeatureSettings* fontFaceFeatures() const
{
return m_rareData ? &m_rareData->fontFaceFeatures() : nullptr;
}
const FontSelectionSpecifiedCapabilities& fontFaceCapabilities() const
{
return m_fontFaceCapabilities;
}
const FontPaletteValues* fontPaletteValues() const
{
return m_rareData ? &m_rareData->fontPaletteValues() : nullptr;
}
bool operator==(const FontCreationContext& other) const
{
return m_fontFaceCapabilities == other.m_fontFaceCapabilities
&& arePointingToEqualData(m_rareData, other.m_rareData);
}
bool operator!=(const FontCreationContext& other) const
{
return !(*this == other);
}
private:
FontSelectionSpecifiedCapabilities m_fontFaceCapabilities;
RefPtr<FontCreationContextRareData> m_rareData;
};
inline void add(Hasher& hasher, const FontCreationContext& fontCreationContext)
{
if (fontCreationContext.fontFaceFeatures())
add(hasher, *fontCreationContext.fontFaceFeatures());
add(hasher, fontCreationContext.fontFaceCapabilities().tied());
if (fontCreationContext.fontPaletteValues())
add(hasher, *fontCreationContext.fontPaletteValues());
}
}
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