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

/*
 * Copyright 2011 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#ifndef SkDrawProcs_DEFINED
#define SkDrawProcs_DEFINED

#include "SkDraw.h"

class SkAAClip;
class SkBlitter;

struct SkDraw1Glyph {
    const SkDraw* fDraw;
    SkBounder* fBounder;
    const SkRegion* fClip;
    const SkAAClip* fAAClip;
    SkBlitter* fBlitter;
    SkGlyphCache* fCache;
    SkIRect fClipBounds;

    // The fixed x,y are pre-rounded, so impls just trunc them down to ints.
    // i.e. half the sampling frequency has been added.
    // e.g. 1/2 or 1/(2^(SkGlyph::kSubBits+1)) has already been added.
    typedef void (*Proc)(const SkDraw1Glyph&, SkFixed x, SkFixed y, const SkGlyph&);

    Proc init(const SkDraw* draw, SkBlitter* blitter, SkGlyphCache* cache);
};

struct SkDrawProcs {
    SkDraw1Glyph::Proc  fD1GProc;
};

/**
 *  If the current paint is set to stroke and the stroke-width when applied to
 *  the matrix is <= 1.0, then this returns true, and sets coverage (simulating
 *  a stroke by drawing a hairline with partial coverage). If any of these
 *  conditions are false, then this returns false and coverage is ignored.
 */
bool SkDrawTreatAsHairline(const SkPaint&, const SkMatrix&, SkScalar* coverage);

#endif