Exemplos de applyCropRect em C++ (Cpp)

Exemplo n.º 1

Arquivo: SkXfermodeImageFilter.cpp Projeto: DXGL/skia

bool SkXfermodeImageFilter::onFilterImage(Proxy* proxy,
                                            const SkBitmap& src,
                                            const Context& ctx,
                                            SkBitmap* dst,
                                            SkIPoint* offset) const {
    SkBitmap background = src, foreground = src;
    SkImageFilter* backgroundInput = getInput(0);
    SkImageFilter* foregroundInput = getInput(1);
    SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
    if (backgroundInput &&
        !backgroundInput->filterImage(proxy, src, ctx, &background, &backgroundOffset)) {
        background.reset();
    }
    SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
    if (foregroundInput &&
        !foregroundInput->filterImage(proxy, src, ctx, &foreground, &foregroundOffset)) {
        foreground.reset();
    }

    SkIRect bounds, foregroundBounds;
    if (!applyCropRect(ctx, foreground, foregroundOffset, &foregroundBounds)) {
        foregroundBounds.setEmpty();
        foreground.reset();
    }
    if (!applyCropRect(ctx, background, backgroundOffset, &bounds)) {
        bounds.setEmpty();
        background.reset();
    }
    bounds.join(foregroundBounds);
    if (bounds.isEmpty()) {
        return false;
    }

    SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
    if (NULL == device.get()) {
        return false;
    }
    SkCanvas canvas(device);
    canvas.translate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
    SkPaint paint;
    paint.setXfermodeMode(SkXfermode::kSrc_Mode);
    canvas.drawBitmap(background, SkIntToScalar(backgroundOffset.fX),
                      SkIntToScalar(backgroundOffset.fY), &paint);
    paint.setXfermode(fMode);
    canvas.drawBitmap(foreground, SkIntToScalar(foregroundOffset.fX),
                      SkIntToScalar(foregroundOffset.fY), &paint);
    canvas.clipRect(SkRect::Make(foregroundBounds), SkRegion::kDifference_Op);
    paint.setColor(SK_ColorTRANSPARENT);
    canvas.drawPaint(paint);
    *dst = device->accessBitmap(false);
    offset->fX = bounds.left();
    offset->fY = bounds.top();
    return true;
}

Exemplo n.º 2

Arquivo: SkOffsetImageFilter.cpp Projeto: JCROM-FxOS/b2jc_gecko

bool SkOffsetImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& source,
                                        const SkMatrix& matrix,
                                        SkBitmap* result,
                                        SkIPoint* offset) const {
    SkImageFilter* input = getInput(0);
    SkBitmap src = source;
    SkIPoint srcOffset = SkIPoint::Make(0, 0);
#ifdef SK_DISABLE_OFFSETIMAGEFILTER_OPTIMIZATION
    if (false) {
#else
    if (!cropRectIsSet()) {
#endif
        if (input && !input->filterImage(proxy, source, matrix, &src, &srcOffset)) {
            return false;
        }

        SkVector vec;
        matrix.mapVectors(&vec, &fOffset, 1);

        offset->fX = srcOffset.fX + SkScalarRoundToInt(vec.fX);
        offset->fY = srcOffset.fY + SkScalarRoundToInt(vec.fY);
        *result = src;
    } else {
        if (input && !input->filterImage(proxy, source, matrix, &src, &srcOffset)) {
            return false;
        }

        SkIRect bounds;
        src.getBounds(&bounds);
        bounds.offset(srcOffset);

        if (!applyCropRect(&bounds, matrix)) {
            return false;
        }

        SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
        if (NULL == device.get()) {
            return false;
        }
        SkCanvas canvas(device);
        SkPaint paint;
        paint.setXfermodeMode(SkXfermode::kSrc_Mode);
        canvas.translate(SkIntToScalar(srcOffset.fX - bounds.fLeft),
                         SkIntToScalar(srcOffset.fY - bounds.fTop));
        canvas.drawBitmap(src, fOffset.x(), fOffset.y(), &paint);
        *result = device->accessBitmap(false);
        offset->fX = bounds.fLeft;
        offset->fY = bounds.fTop;
    }
    return true;
}

void SkOffsetImageFilter::computeFastBounds(const SkRect& src, SkRect* dst) const {
    if (getInput(0)) {
        getInput(0)->computeFastBounds(src, dst);
    } else {
        *dst = src;
    }
    SkRect copy = *dst;
    dst->offset(fOffset.fX, fOffset.fY);
    dst->join(copy);
}

bool SkOffsetImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
                                         SkIRect* dst) const {
    SkVector vec;
    ctm.mapVectors(&vec, &fOffset, 1);

    *dst = src;
    dst->offset(-SkScalarCeilToInt(vec.fX), -SkScalarCeilToInt(vec.fY));
    dst->join(src);
    return true;
}