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/*
* Copyright (C) 2024 Igalia S.L.
*
* 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.
*/
#include "config.h"
#include "FontCustomPlatformData.h"
#include "FontCache.h"
#include "FontCreationContext.h"
#include "FontDescription.h"
#include "FontVariationsSkia.h"
#include "NotImplemented.h"
#include <skia/core/SkData.h>
namespace WebCore {
FontCustomPlatformData::FontCustomPlatformData(sk_sp<SkTypeface>&& typeface, FontPlatformData::CreationData&& data)
: m_typeface(WTFMove(typeface))
, creationData(WTFMove(data))
, m_renderingResourceIdentifier(RenderingResourceIdentifier::generate())
{
}
FontCustomPlatformData::~FontCustomPlatformData() = default;
FontPlatformData FontCustomPlatformData::fontPlatformData(const FontDescription& description, bool bold, bool italic, const FontCreationContext& fontCreationContext)
{
sk_sp<SkTypeface> typeface = m_typeface;
auto defaultValues = defaultFontVariationValues(*typeface);
if (!defaultValues.isEmpty()) {
Vector<SkFontArguments::VariationPosition::Coordinate> variationsToBeApplied;
auto applyVariation = [&](const FontTag& tag, float value) {
auto iterator = defaultValues.find(tag);
if (iterator == defaultValues.end())
return;
variationsToBeApplied.append({ SkSetFourByteTag(tag[0], tag[1], tag[2], tag[3]), iterator->value.clamp(value) });
};
float weight = description.weight();
if (auto weightValue = fontCreationContext.fontFaceCapabilities().weight)
weight = std::max(std::min(weight, static_cast<float>(weightValue->maximum)), static_cast<float>(weightValue->minimum));
applyVariation({ { 'w', 'g', 'h', 't' } }, weight);
float width = description.width();
if (auto widthValue = fontCreationContext.fontFaceCapabilities().width)
width = std::max(std::min(width, static_cast<float>(widthValue->maximum)), static_cast<float>(widthValue->minimum));
applyVariation({ { 'w', 'd', 't', 'h' } }, width);
if (description.fontStyleAxis() == FontStyleAxis::ital)
applyVariation({ { 'i', 't', 'a', 'l' } }, 1);
else {
float slope = description.italic().value_or(normalItalicValue());
if (auto slopeValue = fontCreationContext.fontFaceCapabilities().weight)
slope = std::max(std::min(slope, static_cast<float>(slopeValue->maximum)), static_cast<float>(slopeValue->minimum));
applyVariation({ { 's', 'l', 'n', 't' } }, slope);
}
// FIXME: optical sizing.
const auto& variations = description.variationSettings();
for (auto& variation : variations)
applyVariation(variation.tag(), variation.value());
if (!variationsToBeApplied.isEmpty()) {
SkFontArguments fontArgs;
fontArgs.setVariationDesignPosition({ variationsToBeApplied.data(), static_cast<int>(variationsToBeApplied.size()) });
if (auto variationTypeface = typeface->makeClone(fontArgs))
typeface = WTFMove(variationTypeface);
}
}
auto size = description.adjustedSizeForFontFace(fontCreationContext.sizeAdjust());
auto features = FontCache::computeFeatures(description, fontCreationContext);
FontPlatformData platformData(WTFMove(typeface), size, bold, italic, description.orientation(), description.widthVariant(), description.textRenderingMode(), WTFMove(features), this);
platformData.updateSizeWithFontSizeAdjust(description.fontSizeAdjust(), description.computedSize());
return platformData;
}
RefPtr<FontCustomPlatformData> FontCustomPlatformData::create(SharedBuffer& buffer, const String& itemInCollection)
{
sk_sp<SkTypeface> typeface = FontCache::forCurrentThread().fontManager().makeFromData(buffer.createSkData());
if (!typeface)
return nullptr;
FontPlatformData::CreationData creationData = { buffer, itemInCollection };
return adoptRef(new FontCustomPlatformData(WTFMove(typeface), WTFMove(creationData)));
}
RefPtr<FontCustomPlatformData> FontCustomPlatformData::createMemorySafe(SharedBuffer&, const String&)
{
return nullptr;
}
bool FontCustomPlatformData::supportsFormat(const String& format)
{
return equalLettersIgnoringASCIICase(format, "truetype"_s)
|| equalLettersIgnoringASCIICase(format, "opentype"_s)
#if HAVE(WOFF_SUPPORT) || USE(WOFF2)
|| equalLettersIgnoringASCIICase(format, "woff2"_s)
#if ENABLE(VARIATION_FONTS)
|| equalLettersIgnoringASCIICase(format, "woff2-variations"_s)
#endif
#endif
#if ENABLE(VARIATION_FONTS)
|| equalLettersIgnoringASCIICase(format, "woff-variations"_s)
|| equalLettersIgnoringASCIICase(format, "truetype-variations"_s)
|| equalLettersIgnoringASCIICase(format, "opentype-variations"_s)
#endif
|| equalLettersIgnoringASCIICase(format, "woff"_s)
|| equalLettersIgnoringASCIICase(format, "svg"_s);
}
bool FontCustomPlatformData::supportsTechnology(const FontTechnology&)
{
// FIXME: define supported technologies for this platform (webkit.org/b/256310).
notImplemented();
return true;
}
std::optional<Ref<FontCustomPlatformData>> FontCustomPlatformData::tryMakeFromSerializationData(FontCustomPlatformSerializedData&& data, bool)
{
RefPtr fontCustomPlatformData = FontCustomPlatformData::create(WTFMove(data.fontFaceData), data.itemInCollection);
if (!fontCustomPlatformData)
return std::nullopt;
fontCustomPlatformData->m_renderingResourceIdentifier = data.renderingResourceIdentifier;
return fontCustomPlatformData.releaseNonNull();
}
FontCustomPlatformSerializedData FontCustomPlatformData::serializedData() const
{
return FontCustomPlatformSerializedData { creationData.fontFaceData, creationData.itemInCollection, m_renderingResourceIdentifier };
}
}
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