The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/skia/trunk/src/image/SkImagePriv.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,127 @@
     1.4 +/*
     1.5 + * Copyright 2012 Google Inc.
     1.6 + *
     1.7 + * Use of this source code is governed by a BSD-style license that can be
     1.8 + * found in the LICENSE file.
     1.9 + */
    1.10 +
    1.11 +#include "SkImagePriv.h"
    1.12 +#include "SkCanvas.h"
    1.13 +#include "SkPicture.h"
    1.14 +
    1.15 +SkBitmap::Config SkColorTypeToBitmapConfig(SkColorType colorType) {
    1.16 +    switch (colorType) {
    1.17 +        case kAlpha_8_SkColorType:
    1.18 +            return SkBitmap::kA8_Config;
    1.19 +
    1.20 +        case kARGB_4444_SkColorType:
    1.21 +            return SkBitmap::kARGB_4444_Config;
    1.22 +
    1.23 +        case kRGB_565_SkColorType:
    1.24 +            return SkBitmap::kRGB_565_Config;
    1.25 +
    1.26 +        case kPMColor_SkColorType:
    1.27 +            return SkBitmap::kARGB_8888_Config;
    1.28 +
    1.29 +        case kIndex_8_SkColorType:
    1.30 +            return SkBitmap::kIndex8_Config;
    1.31 +
    1.32 +        default:
    1.33 +            // break for unsupported colortypes
    1.34 +            break;
    1.35 +    }
    1.36 +    return SkBitmap::kNo_Config;
    1.37 +}
    1.38 +
    1.39 +SkBitmap::Config SkImageInfoToBitmapConfig(const SkImageInfo& info) {
    1.40 +    return SkColorTypeToBitmapConfig(info.fColorType);
    1.41 +}
    1.42 +
    1.43 +SkColorType SkBitmapConfigToColorType(SkBitmap::Config config) {
    1.44 +    static const SkColorType gCT[] = {
    1.45 +        kUnknown_SkColorType,   // kNo_Config
    1.46 +        kAlpha_8_SkColorType,   // kA8_Config
    1.47 +        kIndex_8_SkColorType,   // kIndex8_Config
    1.48 +        kRGB_565_SkColorType,   // kRGB_565_Config
    1.49 +        kARGB_4444_SkColorType, // kARGB_4444_Config
    1.50 +        kPMColor_SkColorType,   // kARGB_8888_Config
    1.51 +    };
    1.52 +    SkASSERT((unsigned)config < SK_ARRAY_COUNT(gCT));
    1.53 +    return gCT[config];
    1.54 +}
    1.55 +
    1.56 +SkImage* SkNewImageFromBitmap(const SkBitmap& bm, bool canSharePixelRef) {
    1.57 +    SkImageInfo info;
    1.58 +    if (!bm.asImageInfo(&info)) {
    1.59 +        return NULL;
    1.60 +    }
    1.61 +
    1.62 +    SkImage* image = NULL;
    1.63 +    if (canSharePixelRef || bm.isImmutable()) {
    1.64 +        image = SkNewImageFromPixelRef(info, bm.pixelRef(), bm.rowBytes());
    1.65 +    } else {
    1.66 +        bm.lockPixels();
    1.67 +        if (bm.getPixels()) {
    1.68 +            image = SkImage::NewRasterCopy(info, bm.getPixels(), bm.rowBytes());
    1.69 +        }
    1.70 +        bm.unlockPixels();
    1.71 +    }
    1.72 +    return image;
    1.73 +}
    1.74 +
    1.75 +static bool needs_layer(const SkPaint& paint) {
    1.76 +    return  0xFF != paint.getAlpha() ||
    1.77 +    paint.getColorFilter() ||
    1.78 +    paint.getImageFilter() ||
    1.79 +    SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrcOver_Mode);
    1.80 +}
    1.81 +
    1.82 +void SkImagePrivDrawPicture(SkCanvas* canvas, SkPicture* picture,
    1.83 +                            SkScalar x, SkScalar y, const SkPaint* paint) {
    1.84 +    int saveCount = canvas->getSaveCount();
    1.85 +
    1.86 +    if (paint && needs_layer(*paint)) {
    1.87 +        SkRect bounds;
    1.88 +        bounds.set(x, y,
    1.89 +                   x + SkIntToScalar(picture->width()),
    1.90 +                   y + SkIntToScalar(picture->height()));
    1.91 +        canvas->saveLayer(&bounds, paint);
    1.92 +        canvas->translate(x, y);
    1.93 +    } else if (x || y) {
    1.94 +        canvas->save();
    1.95 +        canvas->translate(x, y);
    1.96 +    }
    1.97 +
    1.98 +    canvas->drawPicture(*picture);
    1.99 +    canvas->restoreToCount(saveCount);
   1.100 +}
   1.101 +
   1.102 +void SkImagePrivDrawPicture(SkCanvas* canvas, SkPicture* picture,
   1.103 +                            const SkRect* src,  const SkRect& dst, const SkPaint* paint) {
   1.104 +    int saveCount = canvas->getSaveCount();
   1.105 +
   1.106 +    SkMatrix matrix;
   1.107 +    SkRect   tmpSrc;
   1.108 +
   1.109 +    if (NULL != src) {
   1.110 +        tmpSrc = *src;
   1.111 +    } else {
   1.112 +        tmpSrc.set(0, 0,
   1.113 +                   SkIntToScalar(picture->width()),
   1.114 +                   SkIntToScalar(picture->height()));
   1.115 +    }
   1.116 +
   1.117 +    matrix.setRectToRect(tmpSrc, dst, SkMatrix::kFill_ScaleToFit);
   1.118 +    if (paint && needs_layer(*paint)) {
   1.119 +        canvas->saveLayer(&dst, paint);
   1.120 +    } else {
   1.121 +        canvas->save();
   1.122 +    }
   1.123 +    canvas->concat(matrix);
   1.124 +    if (!paint || !needs_layer(*paint)) {
   1.125 +        canvas->clipRect(tmpSrc);
   1.126 +    }
   1.127 +
   1.128 +    canvas->drawPicture(*picture);
   1.129 +    canvas->restoreToCount(saveCount);
   1.130 +}