The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/skia/trunk/src/effects/SkPorterDuff.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,87 @@
     1.4 +
     1.5 +/*
     1.6 + * Copyright 2011 Google Inc.
     1.7 + *
     1.8 + * Use of this source code is governed by a BSD-style license that can be
     1.9 + * found in the LICENSE file.
    1.10 + */
    1.11 +
    1.12 +
    1.13 +#include "SkPorterDuff.h"
    1.14 +#include "SkXfermode.h"
    1.15 +
    1.16 +/*  This file just exists as a compatibility layer, gluing the PorterDuff API
    1.17 +    into the (extended) SkXfermode API
    1.18 + */
    1.19 +
    1.20 +#define MAKE_PAIR(mode) { SkPorterDuff::k##mode##_Mode, SkXfermode::k##mode##_Mode }
    1.21 +
    1.22 +// this table must be in SkPorterDuff::Mode order, so it can be indexed directly
    1.23 +// with a porterduff mode.
    1.24 +static const struct Pair {
    1.25 +    SkPorterDuff::Mode  fPD;
    1.26 +    SkXfermode::Mode    fXF;
    1.27 +} gPairs[] = {
    1.28 +    MAKE_PAIR(Clear),
    1.29 +    MAKE_PAIR(Src),
    1.30 +    MAKE_PAIR(Dst),
    1.31 +    MAKE_PAIR(SrcOver),
    1.32 +    MAKE_PAIR(DstOver),
    1.33 +    MAKE_PAIR(SrcIn),
    1.34 +    MAKE_PAIR(DstIn),
    1.35 +    MAKE_PAIR(SrcOut),
    1.36 +    MAKE_PAIR(DstOut),
    1.37 +    MAKE_PAIR(SrcATop),
    1.38 +    MAKE_PAIR(DstATop),
    1.39 +    MAKE_PAIR(Xor),
    1.40 +    MAKE_PAIR(Darken),
    1.41 +    MAKE_PAIR(Lighten),
    1.42 +    MAKE_PAIR(Modulate),
    1.43 +    MAKE_PAIR(Screen),
    1.44 +    { SkPorterDuff::kAdd_Mode, SkXfermode::kPlus_Mode },
    1.45 +#ifdef SK_BUILD_FOR_ANDROID
    1.46 +    MAKE_PAIR(Overlay),
    1.47 +#endif
    1.48 +};
    1.49 +
    1.50 +static bool find_pdmode(SkXfermode::Mode src, SkPorterDuff::Mode* dst) {
    1.51 +    const Pair* pairs = gPairs;
    1.52 +    for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
    1.53 +        if (pairs[i].fXF == src) {
    1.54 +            if (dst) {
    1.55 +                *dst = pairs[i].fPD;
    1.56 +            }
    1.57 +            return true;
    1.58 +        }
    1.59 +    }
    1.60 +    return false;
    1.61 +}
    1.62 +
    1.63 +SkXfermode::Mode SkPorterDuff::ToXfermodeMode(Mode mode) {
    1.64 +    SkASSERT((unsigned)mode < SkPorterDuff::kModeCount);
    1.65 +    const Pair& pair = gPairs[mode];
    1.66 +    SkASSERT(pair.fPD == mode);
    1.67 +    return pair.fXF;
    1.68 +}
    1.69 +
    1.70 +SkXfermode* SkPorterDuff::CreateXfermode(SkPorterDuff::Mode mode) {
    1.71 +    const Pair& pair = gPairs[mode];
    1.72 +    SkASSERT(pair.fPD == mode);
    1.73 +    return SkXfermode::Create(pair.fXF);
    1.74 +}
    1.75 +
    1.76 +bool SkPorterDuff::IsMode(SkXfermode* xfer, Mode* pdmode) {
    1.77 +    SkXfermode::Mode xfmode;
    1.78 +    if (!SkXfermode::AsMode(xfer, &xfmode)) {
    1.79 +        return false;
    1.80 +    }
    1.81 +    return find_pdmode(xfmode, pdmode);
    1.82 +}
    1.83 +
    1.84 +SkXfermodeProc SkPorterDuff::GetXfermodeProc(Mode mode) {
    1.85 +    return SkXfermode::GetProc(gPairs[mode].fXF);
    1.86 +}
    1.87 +
    1.88 +SkXfermodeProc16 SkPorterDuff::GetXfermodeProc16(Mode mode, SkColor srcColor) {
    1.89 +    return SkXfermode::GetProc16(gPairs[mode].fXF, srcColor);
    1.90 +}