src/gpu/GrGlyph.h

/*
 * Copyright 2010 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef GrGlyph_DEFINED
#define GrGlyph_DEFINED

#include "include/gpu/GrTypes.h"
#include "src/gpu/GrDrawOpAtlas.h"
#include "src/gpu/geometry/GrRect.h"

#include "include/core/SkPath.h"
#include "include/private/SkChecksum.h"
#include "include/private/SkFixed.h"

class GrGlyph {
public:
    static GrMaskFormat FormatFromSkGlyph(SkMask::Format format) {
        switch (format) {
            case SkMask::kBW_Format:
            case SkMask::kSDF_Format:
                // fall through to kA8 -- we store BW and SDF glyphs in our 8-bit cache
            case SkMask::kA8_Format:
                return kA8_GrMaskFormat;
            case SkMask::k3D_Format:
                return kA8_GrMaskFormat; // ignore the mul and add planes, just use the mask
            case SkMask::kLCD16_Format:
                return kA565_GrMaskFormat;
            case SkMask::kARGB32_Format:
                return kARGB_GrMaskFormat;
        }

        SkUNREACHABLE;
    }

    GrGlyph(const SkGlyph& skGlyph)
            : fPackedID{skGlyph.getPackedID()}
            , fWidthHeight(SkIPoint16::Make(skGlyph.width(), skGlyph.height())) {
    }

    int width() const { return fWidthHeight.fX; }
    int height() const { return fWidthHeight.fY; }
    uint32_t pageIndex() const { return GrDrawOpAtlas::GetPageIndexFromID(fPlotLocator); }

    const SkPackedGlyphID      fPackedID;
    const SkIPoint16           fWidthHeight{0, 0};

    SkIPoint16                 fAtlasLocation{0, 0};
    GrDrawOpAtlas::PlotLocator fPlotLocator{GrDrawOpAtlas::kInvalidPlotLocator};
};

#endif