/*

 * 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 RandomScalerContext_DEFINED

#define RandomScalerContext_DEFINED

#include "include/core/SkTypeface.h"

#include "src/core/SkScalerContext.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:

    std::unique_ptr<SkScalerContext> onCreateScalerContext(const SkScalerContextEffects&,

                                                           const SkDescriptor*) const override;

    void onFilterRec(SkScalerContextRec*) const override;

    void getGlyphToUnicodeMap(SkUnichar*) const override;

    std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override;

    std::unique_ptr<SkStreamAsset> onOpenStream(int* ttcIndex) const override;

    sk_sp<SkTypeface> onMakeClone(const SkFontArguments& args) const override;

    void onGetFontDescriptor(SkFontDescriptor*, bool* isLocal) const override;

    void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override;

    int onCountGlyphs() const override;

    int onGetUPEM() const override;

    void onGetFamilyName(SkString* familyName) const override;

    bool onGetPostScriptName(SkString*) const override;

    SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override;

    void getPostScriptGlyphNames(SkString*) const override;

    bool onGlyphMaskNeedsCurrentColor() const override;

    int onGetVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[],

                                     int coordinateCount) const override;

    int onGetVariationDesignParameters(SkFontParameters::Variation::Axis parameters[],

                                       int parameterCount) 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