C++ (Cpp) FloatSize::isExpressibleAsIntSize Examples

Example #1

File: HTMLCanvasElement.cpp Project: srinivas-kakarla/WebKitForWayland

void HTMLCanvasElement::createImageBuffer() const
{
    ASSERT(!m_imageBuffer);

    m_hasCreatedImageBuffer = true;
    m_didClearImageBuffer = true;

    FloatSize logicalSize = size();
    FloatSize deviceSize = convertLogicalToDevice(logicalSize);
    if (!deviceSize.isExpressibleAsIntSize())
        return;

    if (deviceSize.width() * deviceSize.height() > MaxCanvasArea) {
        StringBuilder stringBuilder;
        stringBuilder.appendLiteral("Canvas area exceeds the maximum limit (width * height > ");
        stringBuilder.appendNumber(MaxCanvasArea);
        stringBuilder.appendLiteral(").");
        document().addConsoleMessage(MessageSource::JS, MessageLevel::Warning, stringBuilder.toString());
        return;
    }

    // Make sure we don't use more pixel memory than the system can support.
    size_t requestedPixelMemory = 4 * width() * height();
    if (activePixelMemory + requestedPixelMemory > maxActivePixelMemory()) {
        StringBuilder stringBuilder;
        stringBuilder.appendLiteral("Total canvas memory use exceeds the maximum limit (");
        stringBuilder.appendNumber(maxActivePixelMemory() / 1024 / 1024);
        stringBuilder.appendLiteral(" MB).");
        document().addConsoleMessage(MessageSource::JS, MessageLevel::Warning, stringBuilder.toString());
        return;
    }

    IntSize bufferSize(deviceSize.width(), deviceSize.height());
    if (!bufferSize.width() || !bufferSize.height())
        return;

    RenderingMode renderingMode = shouldAccelerate(bufferSize) ? Accelerated : Unaccelerated;

    setImageBuffer(ImageBuffer::create(size(), renderingMode));
    if (!m_imageBuffer)
        return;
    m_imageBuffer->context().setShadowsIgnoreTransforms(true);
    m_imageBuffer->context().setImageInterpolationQuality(DefaultInterpolationQuality);
    if (document().settings() && !document().settings()->antialiased2dCanvasEnabled())
        m_imageBuffer->context().setShouldAntialias(false);
    m_imageBuffer->context().setStrokeThickness(1);
    m_contextStateSaver = std::make_unique<GraphicsContextStateSaver>(m_imageBuffer->context());

    JSC::JSLockHolder lock(scriptExecutionContext()->vm());
    scriptExecutionContext()->vm().heap.reportExtraMemoryAllocated(memoryCost());

#if USE(IOSURFACE_CANVAS_BACKING_STORE) || ENABLE(ACCELERATED_2D_CANVAS)
    if (m_context && m_context->is2d())
        // Recalculate compositing requirements if acceleration state changed.
        const_cast<HTMLCanvasElement*>(this)->setNeedsStyleRecalc(SyntheticStyleChange);
#endif
}

Example #2

File: HTMLCanvasElement.cpp Project: paul99/third_party

void HTMLCanvasElement::createImageBuffer() const
{
    ASSERT(!m_imageBuffer);

    m_hasCreatedImageBuffer = true;
    m_didClearImageBuffer = true;

    FloatSize logicalSize(width(), height());
    FloatSize deviceSize = convertLogicalToDevice(logicalSize);
    if (!deviceSize.isExpressibleAsIntSize())
        return;

    if (deviceSize.width() * deviceSize.height() > MaxCanvasArea)
        return;
#if USE(SKIA)
    if (deviceSize.width() > MaxSkiaDim || deviceSize.height() > MaxSkiaDim)
        return;
#endif

    IntSize bufferSize(deviceSize.width(), deviceSize.height());
    if (!bufferSize.width() || !bufferSize.height())
        return;

    RenderingMode renderingMode = shouldAccelerate(bufferSize) ? Accelerated : 
#if USE(SKIA)
        UnacceleratedNonPlatformBuffer;
#else
        Unaccelerated;
#endif
    m_imageBuffer = ImageBuffer::create(bufferSize, ColorSpaceDeviceRGB, renderingMode);
    if (!m_imageBuffer)
        return;
    m_imageBuffer->context()->scale(FloatSize(bufferSize.width() / logicalSize.width(), bufferSize.height() / logicalSize.height()));
    m_imageBuffer->context()->setShadowsIgnoreTransforms(true);
    m_imageBuffer->context()->setImageInterpolationQuality(DefaultInterpolationQuality);
    m_imageBuffer->context()->setStrokeThickness(1);
    m_contextStateSaver = adoptPtr(new GraphicsContextStateSaver(*m_imageBuffer->context()));

#if USE(JSC)
    JSC::JSLock lock(JSC::SilenceAssertionsOnly);
    scriptExecutionContext()->globalData()->heap.reportExtraMemoryCost(m_imageBuffer->dataSize());
#endif

#if USE(IOSURFACE_CANVAS_BACKING_STORE) || (ENABLE(ACCELERATED_2D_CANVAS) && USE(ACCELERATED_COMPOSITING))
    if (m_context && m_context->is2d())
        // Recalculate compositing requirements if acceleration state changed.
        const_cast<HTMLCanvasElement*>(this)->setNeedsStyleRecalc(SyntheticStyleChange);
#endif
}

Example #3

File: HTMLCanvasElement.cpp Project: xtturing/webkit

void HTMLCanvasElement::createImageBuffer() const
{
    ASSERT(!m_imageBuffer);

    m_hasCreatedImageBuffer = true;
    m_didClearImageBuffer = true;

    FloatSize logicalSize = size();
    FloatSize deviceSize = convertLogicalToDevice(logicalSize);
    if (!deviceSize.isExpressibleAsIntSize())
        return;

#if PLATFORM(IOS)
    if (deviceSize.width() * deviceSize.height() * 4 > m_maximumDecodedImageSize)
        return;
#else
    if (deviceSize.width() * deviceSize.height() > MaxCanvasArea)
        return;
#endif

    IntSize bufferSize(deviceSize.width(), deviceSize.height());
    if (!bufferSize.width() || !bufferSize.height())
        return;

    RenderingMode renderingMode = shouldAccelerate(bufferSize) ? Accelerated : Unaccelerated;
    m_imageBuffer = ImageBuffer::create(size(), m_deviceScaleFactor, ColorSpaceDeviceRGB, renderingMode);
    if (!m_imageBuffer)
        return;
    m_imageBuffer->context()->setShadowsIgnoreTransforms(true);
    m_imageBuffer->context()->setImageInterpolationQuality(DefaultInterpolationQuality);
    if (document().settings() && !document().settings()->antialiased2dCanvasEnabled())
        m_imageBuffer->context()->setShouldAntialias(false);
    m_imageBuffer->context()->setStrokeThickness(1);
    m_contextStateSaver = adoptPtr(new GraphicsContextStateSaver(*m_imageBuffer->context()));

    JSC::JSLockHolder lock(scriptExecutionContext()->vm());
    size_t numBytes = 4 * m_imageBuffer->internalSize().width() * m_imageBuffer->internalSize().height();
    scriptExecutionContext()->vm()->heap.reportExtraMemoryCost(numBytes);

#if USE(IOSURFACE_CANVAS_BACKING_STORE) || ENABLE(ACCELERATED_2D_CANVAS)
    if (m_context && m_context->is2d())
        // Recalculate compositing requirements if acceleration state changed.
        const_cast<HTMLCanvasElement*>(this)->setNeedsStyleRecalc(SyntheticStyleChange);
#endif
}