xref: /external/skia/src/core/SkTextToPathIter.h

/*
 * Copyright 2012 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkTextToPathIter_DEFINED
#define SkTextToPathIter_DEFINED

#include "SkAutoKern.h"
#include "SkPaint.h"

class SkGlyphCache;

class SkTextToPathIter {
public:
    SkTextToPathIter(const char text[], size_t length, const SkPaint& paint,
                     bool applyStrokeAndPathEffects);
    ~SkTextToPathIter();

    const SkPaint&  getPaint() const { return fPaint; }
    SkScalar        getPathScale() const { return fScale; }

    struct Rec {
        const SkPath*   fPath;  // may be null for "whitespace" glyphs
        SkScalar        fXPos;
    };

    /**
     *  Returns false when all of the text has been consumed
     */
    bool next(const SkPath** path, SkScalar* xpos);

private:
    SkGlyphCache*   fCache;
    SkPaint         fPaint;
    SkScalar        fScale;
    SkFixed         fPrevAdvance;
    const char*     fText;
    const char*     fStop;
    SkMeasureCacheProc fGlyphCacheProc;

    SkScalar        fXPos;      // accumulated xpos, returned in next
    SkAutoKern      fAutoKern;
    int             fXYIndex;   // cache for horizontal -vs- vertical text
};

#endif