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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkRandomScalerContext_DEFINED
#define SkRandomScalerContext_DEFINED
#include "SkScalerContext.h"
#include "SkTypeface.h"
/*
* This scaler context is for debug only purposes. It will 'randomly' but deterministically return
* LCD / A8 / BW / RBGA masks based off of the Glyph ID
*/
class SkRandomTypeface : public SkTypeface {
public:
SkRandomTypeface(sk_sp<SkTypeface> proxy, const SkPaint&, bool fakeit);
SkTypeface* proxy() const { return fProxy.get(); }
const SkPaint& paint() const { return fPaint; }
protected:
SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&,
const SkDescriptor*) const override;
void onFilterRec(SkScalerContextRec*) const override;
std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override;
SkStreamAsset* onOpenStream(int* ttcIndex) const override;
void onGetFontDescriptor(SkFontDescriptor*, bool* isLocal) const override;
int onCharsToGlyphs(const void* chars, Encoding encoding,
uint16_t glyphs[], int glyphCount) const override;
int onCountGlyphs() const override;
int onGetUPEM() const override;
void onGetFamilyName(SkString* familyName) const override;
SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override;
int onGetVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[],
int coordinateCount) const override;
int onGetTableTags(SkFontTableTag tags[]) const override;
size_t onGetTableData(SkFontTableTag, size_t offset,
size_t length, void* data) const override;
private:
sk_sp<SkTypeface> fProxy;
SkPaint fPaint;
bool fFakeIt;
};
#endif
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