C++ (Cpp) wkIOSurfaceContextCreateImage Exemples

Exemple #1

NativeImagePtr ImageBuffer::copyNativeImage(BackingStoreCopy copyBehavior) const
{
    CGImageRef image = 0;
    if (!m_context->isAcceleratedContext()) {
        switch (copyBehavior) {
        case DontCopyBackingStore:
            image = CGImageCreate(internalSize().width(), internalSize().height(), 8, 32, m_data.m_bytesPerRow.unsafeGet(), m_data.m_colorSpace, m_data.m_bitmapInfo, m_data.m_dataProvider.get(), 0, true, kCGRenderingIntentDefault);
            break;
        case CopyBackingStore:
            image = CGBitmapContextCreateImage(context()->platformContext());
            break;
        default:
            ASSERT_NOT_REACHED();
            break;
        }
    }
#if USE(IOSURFACE_CANVAS_BACKING_STORE)
    else {
        image = wkIOSurfaceContextCreateImage(context()->platformContext());
#if defined(BUILDING_ON_LION)
        m_data.m_lastFlushTime = currentTimeMS();
#endif
    }
#endif

    return image;
}

Exemple #2

PassRefPtr<Image> ImageBuffer::copyImage() const
{
    // BitmapImage will release the passed in CGImage on destruction
    CGImageRef ctxImage = 0;
    if (!m_accelerateRendering)
        ctxImage = CGBitmapContextCreateImage(context()->platformContext());
#if USE(IOSURFACE_CANVAS_BACKING_STORE)
    else
        ctxImage = wkIOSurfaceContextCreateImage(context()->platformContext());
#endif
    return BitmapImage::create(ctxImage);
}

Exemple #3

void ImageBuffer::clip(GraphicsContext* context, const FloatRect& rect) const
{
    CGContextRef platformContext = context->platformContext();
    RetainPtr<CGImageRef> image;
    if (!m_accelerateRendering)
        image.adoptCF(cgImage(m_size, m_data));
#if USE(IOSURFACE_CANVAS_BACKING_STORE)
    else
        image.adoptCF(wkIOSurfaceContextCreateImage(platformContext));
#endif
    CGContextTranslateCTM(platformContext, rect.x(), rect.y() + rect.height());
    CGContextScaleCTM(platformContext, 1, -1);
    CGContextClipToMask(platformContext, FloatRect(FloatPoint(), rect.size()), image.get());
    CGContextScaleCTM(platformContext, 1, -1);
    CGContextTranslateCTM(platformContext, -rect.x(), -rect.y() - rect.height());
}

Exemple #4

String ImageBuffer::toDataURL(const String& mimeType, const double* quality) const
{
    ASSERT(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType));

    RetainPtr<CGImageRef> image;
    if (!m_accelerateRendering)
        image.adoptCF(CGBitmapContextCreateImage(context()->platformContext()));
#if USE(IOSURFACE_CANVAS_BACKING_STORE)
    else
        image.adoptCF(wkIOSurfaceContextCreateImage(context()->platformContext()));
#endif

    if (!image)
        return "data:,";

    RetainPtr<CFMutableDataRef> data(AdoptCF, CFDataCreateMutable(kCFAllocatorDefault, 0));
    if (!data)
        return "data:,";

    RetainPtr<CFStringRef> uti = utiFromMIMEType(mimeType);
    ASSERT(uti);

    RetainPtr<CGImageDestinationRef> destination(AdoptCF, CGImageDestinationCreateWithData(data.get(), uti.get(), 1, 0));
    if (!destination)
        return "data:,";

    RetainPtr<CFDictionaryRef> imageProperties = 0;
    if (CFEqual(uti.get(), jpegUTI()) && quality && *quality >= 0.0 && *quality <= 1.0) {
        // Apply the compression quality to the image destination.
        RetainPtr<CFNumberRef> compressionQuality(AdoptCF, CFNumberCreate(kCFAllocatorDefault, kCFNumberDoubleType, quality));
        const void* key = kCGImageDestinationLossyCompressionQuality;
        const void* value = compressionQuality.get();
        imageProperties.adoptCF(CFDictionaryCreate(0, &key, &value, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
    }

    CGImageDestinationAddImage(destination.get(), image.get(), imageProperties.get());
    CGImageDestinationFinalize(destination.get());

    Vector<char> out;
    base64Encode(reinterpret_cast<const char*>(CFDataGetBytePtr(data.get())), CFDataGetLength(data.get()), out);

    return makeString("data:", mimeType, ";base64,", out);
}

Exemple #5

Fichier : ImageBufferCG.cpp Projet : sanyaade-mobiledev/Webkit-Projects

NativeImagePtr ImageBuffer::copyNativeImage(BackingStoreCopy copyBehavior) const
{
    CGImageRef image = 0;
    if (!m_accelerateRendering) {
        switch (copyBehavior) {
        case DontCopyBackingStore:
            image = CGImageCreate(m_size.width(), m_size.height(), 8, 32, m_data.m_bytesPerRow.unsafeGet(), m_data.m_colorSpace, m_data.m_bitmapInfo, m_data.m_dataProvider.get(), 0, true, kCGRenderingIntentDefault);
            break;
        case CopyBackingStore:
            image = CGBitmapContextCreateImage(context()->platformContext());
            break;
        default:
            ASSERT_NOT_REACHED();
            break;
        }
    }
#if USE(IOSURFACE_CANVAS_BACKING_STORE)
    else
        image = wkIOSurfaceContextCreateImage(context()->platformContext());
#endif

    return image;
}