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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MINIKIN_MINIKIN_PAINT_H
#define MINIKIN_MINIKIN_PAINT_H
#include <memory>
#include <string>
#include "minikin/FamilyVariant.h"
#include "minikin/FontCollection.h"
#include "minikin/FontFamily.h"
#include "minikin/Hasher.h"
namespace minikin {
class FontCollection;
// These describe what is stored in MinikinPaint.fontFlags.
enum MinikinFontFlags {
Embolden_Shift = 0,
LinearMetrics_Shift = 1,
Subpixel_Shift = 2,
EmbeddedBitmaps_Shift = 3,
ForceAutoHinting_Shift = 4,
Embolden_Flag = 1 << Embolden_Shift,
LinearMetrics_Flag = 1 << LinearMetrics_Shift,
Subpixel_Flag = 1 << Subpixel_Shift,
EmbeddedBitmaps_Flag = 1 << EmbeddedBitmaps_Shift,
ForceAutoHinting_Flag = 1 << ForceAutoHinting_Shift,
};
// Possibly move into own .h file?
// Note: if you add a field here, either add it to LayoutCacheKey or to skipCache()
struct MinikinPaint {
MinikinPaint(const std::shared_ptr<FontCollection>& font)
: size(0),
scaleX(0),
skewX(0),
letterSpacing(0),
wordSpacing(0),
fontFlags(0),
localeListId(0),
familyVariant(FamilyVariant::DEFAULT),
fontFeatureSettings(),
font(font) {}
bool skipCache() const { return !fontFeatureSettings.empty(); }
float size;
float scaleX;
float skewX;
float letterSpacing;
float wordSpacing;
uint32_t fontFlags;
uint32_t localeListId;
FontStyle fontStyle;
FamilyVariant familyVariant;
std::string fontFeatureSettings;
std::shared_ptr<FontCollection> font;
void copyFrom(const MinikinPaint& paint) { *this = paint; }
MinikinPaint(const MinikinPaint&) = default;
MinikinPaint& operator=(const MinikinPaint&) = default;
MinikinPaint(MinikinPaint&&) = default;
MinikinPaint& operator=(MinikinPaint&&) = default;
inline bool operator==(const MinikinPaint& paint) const {
return size == paint.size && scaleX == paint.scaleX && skewX == paint.skewX &&
letterSpacing == paint.letterSpacing && wordSpacing == paint.wordSpacing &&
fontFlags == paint.fontFlags && localeListId == paint.localeListId &&
fontStyle == paint.fontStyle && familyVariant == paint.familyVariant &&
fontFeatureSettings == paint.fontFeatureSettings && font.get() == paint.font.get();
}
uint32_t hash() const {
return Hasher()
.update(size)
.update(scaleX)
.update(skewX)
.update(letterSpacing)
.update(wordSpacing)
.update(fontFlags)
.update(localeListId)
.update(fontStyle.identifier())
.update(static_cast<uint8_t>(familyVariant))
.updateString(fontFeatureSettings)
.update(font->getId())
.hash();
}
};
} // namespace minikin
#endif // MINIKIN_MINIKIN_PAINT_H
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