Esempio n. 1
0
PassOwnPtr<DragImage> DragImage::create(const KURL& url, const String& inLabel, const FontDescription& systemFont, float deviceScaleFactor)
{
    const Font labelFont = deriveDragLabelFont(kDragLinkLabelFontSize, FontWeightBold, systemFont);
    const Font urlFont = deriveDragLabelFont(kDragLinkUrlFontSize, FontWeightNormal, systemFont);
    FontCachePurgePreventer fontCachePurgePreventer;

    bool drawURLString = true;
    bool clipURLString = false;
    bool clipLabelString = false;

    String urlString = url.string();
    String label = inLabel.stripWhiteSpace();
    if (label.isEmpty()) {
        drawURLString = false;
        label = urlString;
    }

    // First step is drawing the link drag image width.
    TextRun labelRun(label.impl());
    TextRun urlRun(urlString.impl());
    IntSize labelSize(labelFont.width(labelRun), labelFont.fontMetrics().ascent() + labelFont.fontMetrics().descent());

    if (labelSize.width() > kMaxDragLabelStringWidth) {
        labelSize.setWidth(kMaxDragLabelStringWidth);
        clipLabelString = true;
    }

    IntSize urlStringSize;
    IntSize imageSize(labelSize.width() + kDragLabelBorderX * 2, labelSize.height() + kDragLabelBorderY * 2);

    if (drawURLString) {
        urlStringSize.setWidth(urlFont.width(urlRun));
        urlStringSize.setHeight(urlFont.fontMetrics().ascent() + urlFont.fontMetrics().descent());
        imageSize.setHeight(imageSize.height() + urlStringSize.height());
        if (urlStringSize.width() > kMaxDragLabelStringWidth) {
            imageSize.setWidth(kMaxDragLabelWidth);
            clipURLString = true;
        } else
            imageSize.setWidth(std::max(labelSize.width(), urlStringSize.width()) + kDragLabelBorderX * 2);
    }

    // We now know how big the image needs to be, so we create and
    // fill the background
    IntSize scaledImageSize = imageSize;
    scaledImageSize.scale(deviceScaleFactor);
    OwnPtr<ImageBuffer> buffer(ImageBuffer::create(scaledImageSize));
    if (!buffer)
        return nullptr;

    buffer->canvas()->scale(deviceScaleFactor, deviceScaleFactor);

    const float DragLabelRadius = 5;

    IntRect rect(IntPoint(), imageSize);
    SkPaint backgroundPaint;
    backgroundPaint.setColor(SkColorSetRGB(140, 140, 140));
    SkRRect rrect;
    rrect.setRectXY(SkRect::MakeWH(imageSize.width(), imageSize.height()), DragLabelRadius, DragLabelRadius);
    buffer->canvas()->drawRRect(rrect, backgroundPaint);

    // Draw the text
    SkPaint textPaint;
    if (drawURLString) {
        if (clipURLString)
            urlString = StringTruncator::centerTruncate(urlString, imageSize.width() - (kDragLabelBorderX * 2.0f), urlFont);
        IntPoint textPos(kDragLabelBorderX, imageSize.height() - (kLabelBorderYOffset + urlFont.fontMetrics().descent()));
        TextRun textRun(urlString);
        urlFont.drawText(buffer->canvas(), TextRunPaintInfo(textRun), textPos, deviceScaleFactor, textPaint);
    }

    if (clipLabelString)
        label = StringTruncator::rightTruncate(label, imageSize.width() - (kDragLabelBorderX * 2.0f), labelFont);

    bool hasStrongDirectionality;
    TextRun textRun = textRunWithDirectionality(label, &hasStrongDirectionality);
    IntPoint textPos(kDragLabelBorderX, kDragLabelBorderY + labelFont.fontDescription().computedPixelSize());
    if (hasStrongDirectionality && textRun.direction() == RTL) {
        float textWidth = labelFont.width(textRun);
        int availableWidth = imageSize.width() - kDragLabelBorderX * 2;
        textPos.setX(availableWidth - ceilf(textWidth));
    }
    labelFont.drawBidiText(buffer->canvas(), TextRunPaintInfo(textRun), FloatPoint(textPos), Font::DoNotPaintIfFontNotReady, deviceScaleFactor, textPaint);

    RefPtr<Image> image = buffer->newImageSnapshot();
    return DragImage::create(image.get(), DoNotRespectImageOrientation, deviceScaleFactor);
}
Esempio n. 2
0
void RenderTheme::paintSliderTicks(RenderObject* o, const PaintInfo& paintInfo, const IntRect& rect)
{
    Node* node = o->node();
    if (!node)
        return;

    HTMLInputElement* input = node->toInputElement();
    if (!input)
        return;

    HTMLDataListElement* dataList = static_cast<HTMLDataListElement*>(input->list());
    if (!dataList)
        return;

    double min = input->minimum();
    double max = input->maximum();
    ControlPart part = o->style()->appearance();
    // We don't support ticks on alternate sliders like MediaVolumeSliders.
    if (part !=  SliderHorizontalPart && part != SliderVerticalPart)
        return;
    bool isHorizontal = part ==  SliderHorizontalPart;

    IntSize thumbSize;
    RenderObject* thumbRenderer = input->sliderThumbElement()->renderer();
    if (thumbRenderer) {
        RenderStyle* thumbStyle = thumbRenderer->style();
        int thumbWidth = thumbStyle->width().intValue();
        int thumbHeight = thumbStyle->height().intValue();
        thumbSize.setWidth(isHorizontal ? thumbWidth : thumbHeight);
        thumbSize.setHeight(isHorizontal ? thumbHeight : thumbWidth);
    }

    IntSize tickSize = sliderTickSize();
    float zoomFactor = o->style()->effectiveZoom();
    FloatRect tickRect;
    int tickRegionSideMargin = 0;
    int tickRegionWidth = 0;
    IntRect trackBounds;
    RenderObject* trackRenderer = input->sliderTrackElement()->renderer();
    // We can ignoring transforms because transform is handled by the graphics context.
    if (trackRenderer)
        trackBounds = trackRenderer->absoluteBoundingBoxRectIgnoringTransforms();
    IntRect sliderBounds = o->absoluteBoundingBoxRectIgnoringTransforms();

    // Make position relative to the transformed ancestor element.
    trackBounds.setX(trackBounds.x() - sliderBounds.x() + rect.x());
    trackBounds.setY(trackBounds.y() - sliderBounds.y() + rect.y());

    if (isHorizontal) {
        tickRect.setWidth(floor(tickSize.width() * zoomFactor));
        tickRect.setHeight(floor(tickSize.height() * zoomFactor));
        tickRect.setY(floor(rect.y() + rect.height() / 2.0 + sliderTickOffsetFromTrackCenter() * zoomFactor));
        tickRegionSideMargin = trackBounds.x() + (thumbSize.width() - tickSize.width() * zoomFactor) / 2.0;
        tickRegionWidth = trackBounds.width() - thumbSize.width();
    } else {
        tickRect.setWidth(floor(tickSize.height() * zoomFactor));
        tickRect.setHeight(floor(tickSize.width() * zoomFactor));
        tickRect.setX(floor(rect.x() + rect.width() / 2.0 + sliderTickOffsetFromTrackCenter() * zoomFactor));
        tickRegionSideMargin = trackBounds.y() + (thumbSize.width() - tickSize.width() * zoomFactor) / 2.0;
        tickRegionWidth = trackBounds.height() - thumbSize.width();
    }
    RefPtr<HTMLCollection> options = dataList->options();
    GraphicsContextStateSaver stateSaver(*paintInfo.context);
    paintInfo.context->setFillColor(o->style()->visitedDependentColor(CSSPropertyColor), ColorSpaceDeviceRGB);
    for (unsigned i = 0; Node* node = options->item(i); i++) {
        ASSERT(isHTMLOptionElement(node));
        HTMLOptionElement* optionElement = toHTMLOptionElement(node);
        String value = optionElement->value();
        if (!input->isValidValue(value))
            continue;
        double parsedValue = parseToDoubleForNumberType(input->sanitizeValue(value));
        double tickFraction = (parsedValue - min) / (max - min);
        double tickRatio = isHorizontal && o->style()->isLeftToRightDirection() ? tickFraction : 1.0 - tickFraction;
        double tickPosition = round(tickRegionSideMargin + tickRegionWidth * tickRatio);
        if (isHorizontal)
            tickRect.setX(tickPosition);
        else
            tickRect.setY(tickPosition);
        paintInfo.context->fillRect(tickRect);
    }
}
Esempio n. 3
0
PassRefPtr<Uint8ClampedArray> getImageData(const IntRect& rect, const ImageBufferData& data, const IntSize& size)
{
    RefPtr<Uint8ClampedArray> result = Uint8ClampedArray::createUninitialized(rect.width() * rect.height() * 4);

    if (rect.x() < 0 || rect.y() < 0 || (rect.x() + rect.width()) > size.width() || (rect.y() + rect.height()) > size.height())
        result->zeroFill();

    int originx = rect.x();
    int destx = 0;
    if (originx < 0) {
        destx = -originx;
        originx = 0;
    }
    int endx = rect.maxX();
    if (endx > size.width())
        endx = size.width();
    int numColumns = endx - originx;

    int originy = rect.y();
    int desty = 0;
    if (originy < 0) {
        desty = -originy;
        originy = 0;
    }
    int endy = rect.maxY();
    if (endy > size.height())
        endy = size.height();
    int numRows = endy - originy;

    IntRect imageRect(originx, originy, numColumns, numRows);
    RefPtr<cairo_surface_t> imageSurface = copySurfaceToImageAndAdjustRect(data.m_surface.get(), imageRect);
    originx = imageRect.x();
    originy = imageRect.y();
    if (imageSurface != data.m_surface.get()) {
        IntRect area = intersection(rect, IntRect(0, 0, size.width(), size.height()));
        copyRectFromOneSurfaceToAnother(data.m_surface.get(), imageSurface.get(), IntSize(-area.x(), -area.y()), IntRect(IntPoint(), area.size()), IntSize(), CAIRO_OPERATOR_SOURCE);
    }

    unsigned char* dataSrc = cairo_image_surface_get_data(imageSurface.get());
    unsigned char* dataDst = result->data();
    int stride = cairo_image_surface_get_stride(imageSurface.get());
    unsigned destBytesPerRow = 4 * rect.width();

    unsigned char* destRows = dataDst + desty * destBytesPerRow + destx * 4;
    for (int y = 0; y < numRows; ++y) {
        unsigned* row = reinterpret_cast_ptr<unsigned*>(dataSrc + stride * (y + originy));
        for (int x = 0; x < numColumns; x++) {
            int basex = x * 4;
            unsigned* pixel = row + x + originx;

            // Avoid calling Color::colorFromPremultipliedARGB() because one
            // function call per pixel is too expensive.
            unsigned alpha = (*pixel & 0xFF000000) >> 24;
            unsigned red = (*pixel & 0x00FF0000) >> 16;
            unsigned green = (*pixel & 0x0000FF00) >> 8;
            unsigned blue = (*pixel & 0x000000FF);

            if (multiplied == Unmultiplied) {
                if (alpha && alpha != 255) {
                    red = red * 255 / alpha;
                    green = green * 255 / alpha;
                    blue = blue * 255 / alpha;
                }
            }

            destRows[basex]     = red;
            destRows[basex + 1] = green;
            destRows[basex + 2] = blue;
            destRows[basex + 3] = alpha;
        }
        destRows += destBytesPerRow;
    }

    return result.release();
}
Esempio n. 4
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FloatSize::FloatSize(const IntSize& size) : m_width(size.width()), m_height(size.height())
{
}
Esempio n. 5
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void HTMLPlugInImageElement::subframeLoaderWillCreatePlugIn(const KURL& url)
{
    if (!document()->page()
        || !document()->page()->settings()->plugInSnapshottingEnabled())
        return;

    bool inMainFrame = document()->frame() == document()->page()->mainFrame();

    if (document()->isPluginDocument() && inMainFrame) {
        LOG(Plugins, "%p Plug-in document in main frame", this);
        return;
    }

    if (ScriptController::processingUserGesture()) {
        LOG(Plugins, "%p Script is processing user gesture, set to play", this);
        return;
    }

    if (m_createdDuringUserGesture) {
        LOG(Plugins, "%p Plug-in was created when processing user gesture, set to play", this);
        return;
    }

    double lastKnownUserGestureTimestamp = document()->lastHandledUserGestureTimestamp();
    if (!inMainFrame && document()->page()->mainFrame() && document()->page()->mainFrame()->document())
        lastKnownUserGestureTimestamp = std::max(lastKnownUserGestureTimestamp, document()->page()->mainFrame()->document()->lastHandledUserGestureTimestamp());
    if (currentTime() - lastKnownUserGestureTimestamp < autostartSoonAfterUserGestureThreshold) {
        LOG(Plugins, "%p Plug-in was created shortly after a user gesture, set to play", this);
        return;
    }

    RenderBox* renderEmbeddedObject = toRenderBox(renderer());
    Length styleWidth = renderEmbeddedObject->style()->width();
    Length styleHeight = renderEmbeddedObject->style()->height();
    LayoutRect contentBoxRect = renderEmbeddedObject->contentBoxRect();
    int contentWidth = contentBoxRect.width();
    int contentHeight = contentBoxRect.height();
    int contentArea = contentWidth * contentHeight;
    IntSize visibleViewSize = document()->frame()->view()->visibleSize();
    int visibleArea = visibleViewSize.width() * visibleViewSize.height();

    if (inMainFrame && styleWidth.isPercent() && (styleWidth.percent() == 100)
        && styleHeight.isPercent() && (styleHeight.percent() == 100)
        && (static_cast<float>(contentArea) / visibleArea > sizingFullPageAreaRatioThreshold)) {
        LOG(Plugins, "%p Plug-in is top level full page, set to play", this);
        return;
    }

    if (contentWidth <= sizingTinyDimensionThreshold || contentHeight <= sizingTinyDimensionThreshold) {
        LOG(Plugins, "%p Plug-in is %dx%d, set to play", this, contentWidth, contentHeight);
        return;
    }

    if (!document()->page() || !document()->page()->plugInClient()) {
        setDisplayState(WaitingForSnapshot);
        return;
    }

    LOG(Plugins, "%p Plug-in URL: %s", this, m_url.utf8().data());
    LOG(Plugins, "            loaded URL: %s", url.string().utf8().data());

    m_plugInOriginHash = PlugInOriginHash::hash(this, url);
    if (m_plugInOriginHash && document()->page()->plugInClient()->isAutoStartOrigin(m_plugInOriginHash)) {
        LOG(Plugins, "%p Plug-in hash %x is auto-start, set to play", this, m_plugInOriginHash);
        return;
    }

    LOG(Plugins, "%p Plug-in hash %x is %dx%d, origin is not auto-start, set to wait for snapshot", this, m_plugInOriginHash, contentWidth, contentHeight);
    // We may have got to this point by restarting a snapshotted plug-in, in which case we don't want to
    // reset the display state.
    if (displayState() != RestartingWithPendingMouseClick && displayState() != Restarting)
        setDisplayState(WaitingForSnapshot);
}
Esempio n. 6
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ViewportAttributes computeViewportAttributes(ViewportArguments args, int desktopWidth, int deviceWidth, int deviceHeight, int deviceDPI, IntSize visibleViewport)
{
    ViewportAttributes result;

    float availableWidth = visibleViewport.width();
    float availableHeight = visibleViewport.height();

    ASSERT(availableWidth > 0 && availableHeight > 0);

    switch (int(args.width)) {
    case ViewportArguments::ValueDesktopWidth:
        args.width = desktopWidth;
        break;
    case ViewportArguments::ValueDeviceWidth:
        args.width = deviceWidth;
        break;
    case ViewportArguments::ValueDeviceHeight:
        args.width = deviceHeight;
        break;
    }

    switch (int(args.height)) {
    case ViewportArguments::ValueDesktopWidth:
        args.height = desktopWidth;
        break;
    case ViewportArguments::ValueDeviceWidth:
        args.height = deviceWidth;
        break;
    case ViewportArguments::ValueDeviceHeight:
        args.height = deviceHeight;
        break;
    }

    result.devicePixelRatio = float(deviceDPI / 160.0);

    // Resolve non-'auto' width and height to pixel values.
    if (deviceDPI != 1.0) {
        deviceWidth /= result.devicePixelRatio;
        deviceHeight /= result.devicePixelRatio;

        if (args.width != ViewportArguments::ValueAuto)
            args.width /= result.devicePixelRatio;
        if (args.height != ViewportArguments::ValueAuto)
            args.height /= result.devicePixelRatio;
    }

    // Clamp values to range defined by spec and resolve minimum-scale and maximum-scale values
    if (args.width != ViewportArguments::ValueAuto)
        args.width = min(float(10000), max(args.width, float(1)));
    if (args.height != ViewportArguments::ValueAuto)
        args.height = min(float(10000), max(args.height, float(1)));

    if (args.initialScale != ViewportArguments::ValueAuto)
        args.initialScale = min(float(10), max(args.initialScale, float(0.1)));
    if (args.minimumScale != ViewportArguments::ValueAuto)
        args.minimumScale = min(float(10), max(args.minimumScale, float(0.1)));
    if (args.maximumScale != ViewportArguments::ValueAuto)
        args.maximumScale = min(float(10), max(args.maximumScale, float(0.1)));

    // Resolve minimum-scale and maximum-scale values according to spec.
    if (args.minimumScale == ViewportArguments::ValueAuto)
        result.minimumScale = float(0.25);
    else
        result.minimumScale = args.minimumScale;

    if (args.maximumScale == ViewportArguments::ValueAuto) {
        result.maximumScale = float(5.0);
        result.minimumScale = min(float(5.0), result.minimumScale);
    } else
        result.maximumScale = args.maximumScale;
    result.maximumScale = max(result.minimumScale, result.maximumScale);

    // Resolve initial-scale value.
    result.initialScale = args.initialScale;
    if (result.initialScale == ViewportArguments::ValueAuto) {
        result.initialScale = availableWidth / desktopWidth;
        if (args.width != ViewportArguments::ValueAuto)
            result.initialScale = availableWidth / args.width;
        if (args.height != ViewportArguments::ValueAuto) {
            // if 'auto', the initial-scale will be negative here and thus ignored.
            result.initialScale = max(result.initialScale, availableHeight / args.height);
        }
    }

    // Constrain initial-scale value to minimum-scale/maximum-scale range.
    result.initialScale = min(result.maximumScale, max(result.minimumScale, result.initialScale));

    // Resolve width value.
    float width;
    if (args.width != ViewportArguments::ValueAuto)
        width = args.width;
    else {
        if (args.initialScale == ViewportArguments::ValueAuto)
            width = desktopWidth;
        else if (args.height != ViewportArguments::ValueAuto)
            width = args.height * (availableWidth / availableHeight);
        else
            width = availableWidth / result.initialScale;
    }

    // Resolve height value.
    float height;
    if (args.height != ViewportArguments::ValueAuto)
        height = args.height;
    else
        height = width * availableHeight / availableWidth;

    // Extend width and height to fill the visual viewport for the resolved initial-scale.
    width = max(width, availableWidth / result.initialScale);
    height = max(height, availableHeight / result.initialScale);
    result.layoutSize.setWidth(width);
    result.layoutSize.setHeight(height);

    // Update minimum scale factor, to never allow zooming out more than viewport
    result.minimumScale = max(result.minimumScale, max(availableWidth / width, availableHeight / height));

    result.userScalable = args.userScalable;
    // Make maximum and minimum scale equal to the initial scale if user is not allowed to zoom in/out.
    if (!args.userScalable)
        result.maximumScale = result.minimumScale = result.initialScale;

    return result;
}
Esempio n. 7
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String imageTitle(String const& filename, IntSize const& size)
{
    return filename + " (" + String::number(size.width()) + "x" + String::number(size.height()) + ")";
}
void NativeImageSkia::drawPattern(
    GraphicsContext* context,
    const FloatRect& floatSrcRect,
    const FloatSize& scale,
    const FloatPoint& phase,
    CompositeOperator compositeOp,
    const FloatRect& destRect,
    blink::WebBlendMode blendMode,
    const IntSize& repeatSpacing) const
{
    FloatRect normSrcRect = floatSrcRect;
    normSrcRect.intersect(FloatRect(0, 0, bitmap().width(), bitmap().height()));
    if (destRect.isEmpty() || normSrcRect.isEmpty())
        return; // nothing to draw

    SkMatrix totalMatrix = context->getTotalMatrix();
    SkScalar ctmScaleX = totalMatrix.getScaleX();
    SkScalar ctmScaleY = totalMatrix.getScaleY();
    totalMatrix.preScale(scale.width(), scale.height());

    // Figure out what size the bitmap will be in the destination. The
    // destination rect is the bounds of the pattern, we need to use the
    // matrix to see how big it will be.
    SkRect destRectTarget;
    totalMatrix.mapRect(&destRectTarget, normSrcRect);

    float destBitmapWidth = SkScalarToFloat(destRectTarget.width());
    float destBitmapHeight = SkScalarToFloat(destRectTarget.height());

    // Compute the resampling mode.
    ResamplingMode resampling;
    if (context->isAccelerated() || context->printing())
        resampling = LinearResampling;
    else
        resampling = computeResamplingMode(totalMatrix, normSrcRect.width(), normSrcRect.height(), destBitmapWidth, destBitmapHeight);
    resampling = limitResamplingMode(context, resampling);

    SkMatrix shaderTransform;
    RefPtr<SkShader> shader;

    bool isLazyDecoded = DeferredImageDecoder::isLazyDecoded(bitmap());
    // Bicubic filter is only applied to defer-decoded images, see
    // NativeImageSkia::draw for details.
    bool useBicubicFilter = resampling == AwesomeResampling && isLazyDecoded;

    if (resampling == AwesomeResampling && !useBicubicFilter) {
        // Do nice resampling.
        float scaleX = destBitmapWidth / normSrcRect.width();
        float scaleY = destBitmapHeight / normSrcRect.height();
        SkRect scaledSrcRect;

        // The image fragment generated here is not exactly what is
        // requested. The scale factor used is approximated and image
        // fragment is slightly larger to align to integer
        // boundaries.
        SkBitmap resampled = extractScaledImageFragment(normSrcRect, scaleX, scaleY, &scaledSrcRect);
        if (repeatSpacing.isZero()) {
            shader = adoptRef(SkShader::CreateBitmapShader(resampled, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode));
        } else {
            shader = adoptRef(SkShader::CreateBitmapShader(
                createBitmapWithSpace(resampled, repeatSpacing.width() * ctmScaleX, repeatSpacing.height() * ctmScaleY),
                SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode));
        }

        // Since we just resized the bitmap, we need to remove the scale
        // applied to the pixels in the bitmap shader. This means we need
        // CTM * shaderTransform to have identity scale. Since we
        // can't modify CTM (or the rectangle will be drawn in the wrong
        // place), we must set shaderTransform's scale to the inverse of
        // CTM scale.
        shaderTransform.setScale(ctmScaleX ? 1 / ctmScaleX : 1, ctmScaleY ? 1 / ctmScaleY : 1);
    } else {
        // No need to resample before drawing.
        SkBitmap srcSubset;
        bitmap().extractSubset(&srcSubset, enclosingIntRect(normSrcRect));
        if (repeatSpacing.isZero()) {
            shader = adoptRef(SkShader::CreateBitmapShader(srcSubset, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode));
        } else {
            shader = adoptRef(SkShader::CreateBitmapShader(
                createBitmapWithSpace(srcSubset, repeatSpacing.width() * ctmScaleX, repeatSpacing.height() * ctmScaleY),
                SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode));
        }

        // Because no resizing occurred, the shader transform should be
        // set to the pattern's transform, which just includes scale.
        shaderTransform.setScale(scale.width(), scale.height());
    }

    // We also need to translate it such that the origin of the pattern is the
    // origin of the destination rect, which is what WebKit expects. Skia uses
    // the coordinate system origin as the base for the pattern. If WebKit wants
    // a shifted image, it will shift it from there using the shaderTransform.
    float adjustedX = phase.x() + normSrcRect.x() * scale.width();
    float adjustedY = phase.y() + normSrcRect.y() * scale.height();
    shaderTransform.postTranslate(SkFloatToScalar(adjustedX), SkFloatToScalar(adjustedY));
    shader->setLocalMatrix(shaderTransform);

    SkPaint paint;
    paint.setShader(shader.get());
    paint.setXfermode(WebCoreCompositeToSkiaComposite(compositeOp, blendMode).get());
    paint.setColorFilter(context->colorFilter());

    paint.setFilterBitmap(resampling == LinearResampling);
    if (useBicubicFilter)
        paint.setFilterLevel(SkPaint::kHigh_FilterLevel);
    if (isLazyDecoded)
        PlatformInstrumentation::didDrawLazyPixelRef(bitmap().getGenerationID());

    context->drawRect(destRect, paint);
}
bool FECustomFilter::resizeMultisampleBuffers(const IntSize& newContextSize)
{
    if (!m_triedMultisampleBuffer && !createMultisampleBuffer())
        return false;

    if (!canUseMultisampleBuffers())
        return false;

    static const int kMaxSampleCount = 4;
    int maxSupportedSampleCount = 0;
    m_context->getIntegerv(Extensions3D::MAX_SAMPLES, &maxSupportedSampleCount);
    int sampleCount = std::min(kMaxSampleCount, maxSupportedSampleCount);
    if (!sampleCount) {
        deleteMultisampleRenderBuffers();
        return false;
    }

    Extensions3D* extensions = m_context->extensions();
    ASSERT(extensions);

    m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_multisampleFrameBuffer);

    m_context->bindRenderbuffer(GraphicsContext3D::RENDERBUFFER, m_multisampleRenderBuffer);
    extensions->renderbufferStorageMultisample(GraphicsContext3D::RENDERBUFFER, sampleCount, Extensions3D::RGBA8_OES, newContextSize.width(), newContextSize.height());
    m_context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::COLOR_ATTACHMENT0, GraphicsContext3D::RENDERBUFFER, m_multisampleRenderBuffer);

    m_context->bindRenderbuffer(GraphicsContext3D::RENDERBUFFER, m_multisampleDepthBuffer);
    extensions->renderbufferStorageMultisample(GraphicsContext3D::RENDERBUFFER, sampleCount, GraphicsContext3D::DEPTH_COMPONENT16, newContextSize.width(), newContextSize.height());
    m_context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::DEPTH_ATTACHMENT, GraphicsContext3D::RENDERBUFFER, m_multisampleDepthBuffer);

    m_context->bindRenderbuffer(GraphicsContext3D::RENDERBUFFER, 0);

    if (m_context->checkFramebufferStatus(GraphicsContext3D::FRAMEBUFFER) != GraphicsContext3D::FRAMEBUFFER_COMPLETE) {
        deleteMultisampleRenderBuffers();
        return false;
    }

    return true;
}
Esempio n. 10
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inline void FEGaussianBlur::platformApply(ByteArray* srcPixelArray, ByteArray* tmpPixelArray, unsigned kernelSizeX, unsigned kernelSizeY, IntSize& paintSize)
{
#if ENABLE(PARALLEL_JOBS)
    int scanline = 4 * paintSize.width();
    int extraHeight = 3 * kernelSizeY * 0.5f;
    int optimalThreadNumber = (paintSize.width() * paintSize.height()) / (s_minimalRectDimension + extraHeight * paintSize.width());

    if (optimalThreadNumber > 1) {
        ParallelJobs<PlatformApplyParameters> parallelJobs(&platformApplyWorker, optimalThreadNumber);

        int jobs = parallelJobs.numberOfJobs();
        if (jobs > 1) {
            int blockHeight = paintSize.height() / jobs;
            --jobs;
            for (int job = jobs; job >= 0; --job) {
                PlatformApplyParameters& params = parallelJobs.parameter(job);
                params.filter = this;

                int startY;
                int endY;
                if (!job) {
                    startY = 0;
                    endY = blockHeight + extraHeight;
                    params.srcPixelArray = srcPixelArray;
                    params.dstPixelArray = tmpPixelArray;
                } else {
                    if (job == jobs) {
                        startY = job * blockHeight - extraHeight;
                        endY = paintSize.height();
                    } else {
                        startY = job * blockHeight - extraHeight;
                        endY = (job + 1) * blockHeight + extraHeight;
                    }

                    int blockSize = (endY - startY) * scanline;
                    params.srcPixelArray = ByteArray::create(blockSize);
                    params.dstPixelArray = ByteArray::create(blockSize);
                    memcpy(params.srcPixelArray->data(), srcPixelArray->data() + startY * scanline, blockSize);
                }

                params.width = paintSize.width();
                params.height = endY - startY;
                params.kernelSizeX = kernelSizeX;
                params.kernelSizeY = kernelSizeY;
            }

            parallelJobs.execute();

            // Copy together the parts of the image.
            for (int job = jobs; job >= 1; --job) {
                PlatformApplyParameters& params = parallelJobs.parameter(job);
                int sourceOffset;
                int destinationOffset;
                int size;
                if (job == jobs) {
                    sourceOffset = extraHeight * scanline;
                    destinationOffset = job * blockHeight * scanline;
                    size = (paintSize.height() - job * blockHeight) * scanline;
                } else {
                    sourceOffset = extraHeight * scanline;
                    destinationOffset = job * blockHeight * scanline;
                    size = blockHeight * scanline;
                }
                memcpy(srcPixelArray->data() + destinationOffset, params.srcPixelArray->data() + sourceOffset, size);
            }
            return;
        }
    }
#endif // PARALLEL_JOBS

    // The selection here eventually should happen dynamically on some platforms.
#if CPU(ARM_NEON) && COMPILER(GCC)
    platformApplyNeon(srcPixelArray, tmpPixelArray, kernelSizeX, kernelSizeY, paintSize);
#else
    platformApplyGeneric(srcPixelArray, tmpPixelArray, kernelSizeX, kernelSizeY, paintSize);
#endif
}
Esempio n. 11
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void ChromeClient::widgetSizeChanged(const IntSize& oldWidgetSize, IntSize newSize)
{
#if USE(ACCELERATED_COMPOSITING)
    AcceleratedCompositingContext* compositingContext = m_webView->priv->acceleratedCompositingContext.get();
    if (compositingContext->enabled()) {
        m_webView->priv->acceleratedCompositingContext->resizeRootLayer(newSize);
        return;
    }
#endif

    // Grow the backing store by at least 1.5 times the current size. This prevents
    // lots of unnecessary allocations during an opaque resize.
    WidgetBackingStore* backingStore = m_webView->priv->backingStore.get();
    if (backingStore && oldWidgetSize == newSize)
        return;

    if (backingStore) {
        const IntSize& oldSize = backingStore->size();
        if (newSize.width() > oldSize.width())
            newSize.setWidth(std::max(newSize.width(), static_cast<int>(oldSize.width() * 1.5)));
        if (newSize.height() > oldSize.height())
            newSize.setHeight(std::max(newSize.height(), static_cast<int>(oldSize.height() * 1.5)));
    }

    // If we did not have a backing store before or if the backing store is growing, we need
    // to reallocate a new one and set it up so that we don't see artifacts while resizing.
    if (!backingStore
        || newSize.width() > backingStore->size().width()
        || newSize.height() > backingStore->size().height()) {

        OwnPtr<WidgetBackingStore> newBackingStore = createBackingStore(GTK_WIDGET(m_webView), newSize);
        RefPtr<cairo_t> cr = adoptRef(cairo_create(newBackingStore->cairoSurface()));

        clearEverywhereInBackingStore(m_webView, cr.get());

        // Now we copy the old backing store image over the new cleared surface to prevent
        // annoying flashing as the widget grows. We do the "real" paint in a timeout
        // since we don't want to block resizing too long.
        if (backingStore) {
            cairo_set_source_surface(cr.get(), backingStore->cairoSurface(), 0, 0);
            cairo_rectangle(cr.get(), 0, 0, backingStore->size().width(), backingStore->size().height());
            cairo_fill(cr.get());
        }

        m_webView->priv->backingStore = newBackingStore.release();
        backingStore = m_webView->priv->backingStore.get();

    } else if (oldWidgetSize.width() < newSize.width() || oldWidgetSize.height() < newSize.height()) {
        // The widget is growing, but we did not need to create a new backing store.
        // We should clear any old data outside of the old widget region.
        RefPtr<cairo_t> cr = adoptRef(cairo_create(backingStore->cairoSurface()));
        clipOutOldWidgetArea(cr.get(), oldWidgetSize, newSize);
        clearEverywhereInBackingStore(m_webView, cr.get());
    }

    // We need to force a redraw and ignore the framerate cap.
    m_lastDisplayTime = 0;
    m_dirtyRegion.unite(IntRect(IntPoint(), backingStore->size()));

    // WebCore timers by default have a lower priority which leads to more artifacts when opaque
    // resize is on, thus we use g_timeout_add here to force a higher timeout priority.
    if (!m_repaintSoonSourceId)
        m_repaintSoonSourceId = g_timeout_add(0, reinterpret_cast<GSourceFunc>(repaintEverythingSoonTimeout), this);
}
void MediaPlayerPrivateAVFoundation::setNaturalSize(IntSize size)
{
    LOG(Media, "MediaPlayerPrivateAVFoundation:setNaturalSize(%p) - size = %d x %d", this, size.width(), size.height());

    IntSize oldSize = m_cachedNaturalSize;
    m_cachedNaturalSize = size;
    if (oldSize != m_cachedNaturalSize)
        m_player->sizeChanged();
}
Esempio n. 13
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static ResamplingMode computeResamplingMode(PlatformContextSkia* platformContext, const NativeImageSkia& bitmap, int srcWidth, int srcHeight, float destWidth, float destHeight)
{
    if (platformContext->hasImageResamplingHint()) {
        IntSize srcSize;
        FloatSize dstSize;
        platformContext->getImageResamplingHint(&srcSize, &dstSize);
        srcWidth = srcSize.width();
        srcHeight = srcSize.height();
        destWidth = dstSize.width();
        destHeight = dstSize.height();
    }

    int destIWidth = static_cast<int>(destWidth);
    int destIHeight = static_cast<int>(destHeight);

    // The percent change below which we will not resample. This usually means
    // an off-by-one error on the web page, and just doing nearest neighbor
    // sampling is usually good enough.
    const float kFractionalChangeThreshold = 0.025f;

    // Images smaller than this in either direction are considered "small" and
    // are not resampled ever (see below).
    const int kSmallImageSizeThreshold = 8;

    // The amount an image can be stretched in a single direction before we
    // say that it is being stretched so much that it must be a line or
    // background that doesn't need resampling.
    const float kLargeStretch = 3.0f;

    // Figure out if we should resample this image. We try to prune out some
    // common cases where resampling won't give us anything, since it is much
    // slower than drawing stretched.
    if (srcWidth == destIWidth && srcHeight == destIHeight) {
        // We don't need to resample if the source and destination are the same.
        return RESAMPLE_NONE;
    }

    if (srcWidth <= kSmallImageSizeThreshold
        || srcHeight <= kSmallImageSizeThreshold
        || destWidth <= kSmallImageSizeThreshold
        || destHeight <= kSmallImageSizeThreshold) {
        // Never resample small images. These are often used for borders and
        // rules (think 1x1 images used to make lines).
        return RESAMPLE_NONE;
    }

    if (srcHeight * kLargeStretch <= destHeight || srcWidth * kLargeStretch <= destWidth) {
        // Large image detected.

        // Don't resample if it is being stretched a lot in only one direction.
        // This is trying to catch cases where somebody has created a border
        // (which might be large) and then is stretching it to fill some part
        // of the page.
        if (srcWidth == destWidth || srcHeight == destHeight)
            return RESAMPLE_NONE;

        // The image is growing a lot and in more than one direction. Resampling
        // is slow and doesn't give us very much when growing a lot.
        return RESAMPLE_LINEAR;
    }

    if ((fabs(destWidth - srcWidth) / srcWidth < kFractionalChangeThreshold)
        && (fabs(destHeight - srcHeight) / srcHeight < kFractionalChangeThreshold)) {
        // It is disappointingly common on the web for image sizes to be off by
        // one or two pixels. We don't bother resampling if the size difference
        // is a small fraction of the original size.
        return RESAMPLE_NONE;
    }

    // When the image is not yet done loading, use linear. We don't cache the
    // partially resampled images, and as they come in incrementally, it causes
    // us to have to resample the whole thing every time.
    if (!bitmap.isDataComplete())
        return RESAMPLE_LINEAR;

    // Everything else gets resampled.
    // If the platform context permits high quality interpolation, use it.
    if (platformContext->interpolationQuality() == InterpolationHigh)
        return RESAMPLE_AWESOME;
    
    return RESAMPLE_LINEAR;
}
Esempio n. 14
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bool DragController::startDrag(Frame* src, Clipboard* clipboard, DragOperation srcOp, const PlatformMouseEvent& dragEvent, const IntPoint& dragOrigin, bool isDHTMLDrag)
{    
    ASSERT(src);
    ASSERT(clipboard);
    
    if (!src->view() || !src->contentRenderer())
        return false;
    
    HitTestResult dragSource = HitTestResult(dragOrigin);
    dragSource = src->eventHandler()->hitTestResultAtPoint(dragOrigin, true);
    KURL linkURL = dragSource.absoluteLinkURL();
    KURL imageURL = dragSource.absoluteImageURL();
    bool isSelected = dragSource.isSelected();
    
    IntPoint mouseDraggedPoint = src->view()->windowToContents(dragEvent.pos());
    
    m_draggingImageURL = KURL();
    m_dragOperation = srcOp;
    
    DragImageRef dragImage = 0;
    IntPoint dragLoc(0, 0);
    IntPoint dragImageOffset(0, 0);
    
    if (isDHTMLDrag) 
        dragImage = clipboard->createDragImage(dragImageOffset);
    
    // We allow DHTML/JS to set the drag image, even if its a link, image or text we're dragging.
    // This is in the spirit of the IE API, which allows overriding of pasteboard data and DragOp.
    if (dragImage) {
        dragLoc = dragLocForDHTMLDrag(mouseDraggedPoint, dragOrigin, dragImageOffset, !linkURL.isEmpty());
        m_dragOffset = dragImageOffset;
    }
    
    bool startedDrag = true; // optimism - we almost always manage to start the drag
    
    Node* node = dragSource.innerNonSharedNode();
    
    Image* image = getImage(static_cast<Element*>(node));
    if (!imageURL.isEmpty() && node && node->isElementNode() && image
            && (m_dragSourceAction & DragSourceActionImage)) {
        // We shouldn't be starting a drag for an image that can't provide an extension. 
        // This is an early detection for problems encountered later upon drop.
        ASSERT(!image->filenameExtension().isEmpty());
        Element* element = static_cast<Element*>(node);
        if (!clipboard->hasData()) {
            m_draggingImageURL = imageURL; 
            prepareClipboardForImageDrag(src, clipboard, element, linkURL, imageURL, dragSource.altDisplayString());
        }
        
        m_client->willPerformDragSourceAction(DragSourceActionImage, dragOrigin, clipboard);
        
        if (!dragImage) {
            IntRect imageRect = dragSource.imageRect();
            imageRect.setLocation(m_page->mainFrame()->view()->windowToContents(src->view()->contentsToWindow(imageRect.location())));
            doImageDrag(element, dragOrigin, dragSource.imageRect(), clipboard, src, m_dragOffset);
        } else 
            // DHTML defined drag image
            doSystemDrag(dragImage, dragLoc, dragOrigin, clipboard, src, false);

    } else if (!linkURL.isEmpty() && (m_dragSourceAction & DragSourceActionLink)) {
        if (!clipboard->hasData())
            // Simplify whitespace so the title put on the clipboard resembles what the user sees
            // on the web page. This includes replacing newlines with spaces.
            clipboard->writeURL(linkURL, dragSource.textContent().simplifyWhiteSpace(), src);

        if (src->selection()->isCaret() && src->selection()->isContentEditable()) {
            // a user can initiate a drag on a link without having any text
            // selected.  In this case, we should expand the selection to
            // the enclosing anchor element
            Position pos = src->selection()->base();
            Node* node = enclosingAnchorElement(pos);
            if (node)
                src->selection()->setSelection(Selection::selectionFromContentsOfNode(node));
        }

        m_client->willPerformDragSourceAction(DragSourceActionLink, dragOrigin, clipboard);
        if (!dragImage) {
            dragImage = m_client->createDragImageForLink(linkURL, dragSource.textContent(), src);
            IntSize size = dragImageSize(dragImage);
            m_dragOffset = IntPoint(-size.width() / 2, -LinkDragBorderInset);
            dragLoc = IntPoint(mouseDraggedPoint.x() + m_dragOffset.x(), mouseDraggedPoint.y() + m_dragOffset.y());
        } 
        doSystemDrag(dragImage, dragLoc, mouseDraggedPoint, clipboard, src, true);
    } else if (isSelected && (m_dragSourceAction & DragSourceActionSelection)) {
        RefPtr<Range> selectionRange = src->selection()->toNormalizedRange();
        ASSERT(selectionRange);
        if (!clipboard->hasData()) 
            clipboard->writeRange(selectionRange.get(), src);
        m_client->willPerformDragSourceAction(DragSourceActionSelection, dragOrigin, clipboard);
        if (!dragImage) {
            dragImage = createDragImageForSelection(src);
            dragLoc = dragLocForSelectionDrag(src);
            m_dragOffset = IntPoint((int)(dragOrigin.x() - dragLoc.x()), (int)(dragOrigin.y() - dragLoc.y()));
        }
        doSystemDrag(dragImage, dragLoc, dragOrigin, clipboard, src, false);
    } else if (isDHTMLDrag) {
        ASSERT(m_dragSourceAction & DragSourceActionDHTML);
        m_client->willPerformDragSourceAction(DragSourceActionDHTML, dragOrigin, clipboard);
        doSystemDrag(dragImage, dragLoc, dragOrigin, clipboard, src, false);
    } else {
        // Only way I know to get here is if to get here is if the original element clicked on in the mousedown is no longer
        // under the mousedown point, so linkURL, imageURL and isSelected are all false/empty.
        startedDrag = false;
    }
    
    if (dragImage)
        deleteDragImage(dragImage);
    return startedDrag;
}
// used by the partial screen invals
FloatRect ShaderProgram::rectInViewCoord(const TransformationMatrix& drawMatrix, const IntSize& size)
{
    FloatRect srect(0, 0, size.width(), size.height());
    TransformationMatrix renderMatrix = m_contentToViewMatrix * drawMatrix;
    return renderMatrix.mapRect(srect);
}
void NinePieceImageGrid::setDrawInfoMiddle(NinePieceDrawInfo& drawInfo) const
{
    IntSize sourceSize = m_imageSize - IntSize(m_left.slice + m_right.slice, m_top.slice + m_bottom.slice);
    IntSize destinationSize =
        m_borderImageArea.size() - IntSize(m_left.width + m_right.width, m_top.width + m_bottom.width);

    drawInfo.isDrawable = m_fill && !sourceSize.isEmpty() && !destinationSize.isEmpty();
    if (!drawInfo.isDrawable)
        return;

    drawInfo.source = subrect(m_imageSize, m_left.slice, m_top.slice, sourceSize.width(), sourceSize.height());
    drawInfo.destination = subrect(m_borderImageArea, m_left.width, m_top.width,
        destinationSize.width(), destinationSize.height());

    FloatSize middleScaleFactor(1, 1);

    if (m_top.isDrawable())
        middleScaleFactor.setWidth(m_top.scale());
    else if (m_bottom.isDrawable())
        middleScaleFactor.setWidth(m_bottom.scale());

    if (m_left.isDrawable())
        middleScaleFactor.setHeight(m_left.scale());
    else if (m_right.isDrawable())
        middleScaleFactor.setHeight(m_right.scale());

    if (!sourceSize.isEmpty()) {
        // For "stretch" rules, just override the scale factor and replace. We only have to do this for the center tile,
        // since sides don't even use the scale factor unless they have a rule other than "stretch". The middle however
        // can have "stretch" specified in one axis but not the other, so we have to correct the scale here.
        if (m_horizontalTileRule == (Image::TileRule)StretchImageRule)
            middleScaleFactor.setWidth((float) destinationSize.width() / sourceSize.width());

        if (m_verticalTileRule == (Image::TileRule)StretchImageRule)
            middleScaleFactor.setHeight((float) destinationSize.height() / sourceSize.height());
    }

    drawInfo.tileScale = middleScaleFactor;
    drawInfo.tileRule = { m_horizontalTileRule, m_verticalTileRule };
}
Esempio n. 17
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PlatformGestureEventBuilder::PlatformGestureEventBuilder(Widget* widget, const WebGestureEvent& e)
{
    float scale = widgetInputEventsScaleFactor(widget);
    IntSize offset = widgetInputEventsOffset(widget);
    IntPoint pinchViewport = pinchViewportOffset(widget);

    switch (e.type) {
    case WebInputEvent::GestureScrollBegin:
        m_type = PlatformEvent::GestureScrollBegin;
        break;
    case WebInputEvent::GestureScrollEnd:
        m_type = PlatformEvent::GestureScrollEnd;
        break;
    case WebInputEvent::GestureFlingStart:
        m_type = PlatformEvent::GestureFlingStart;
        break;
    case WebInputEvent::GestureScrollUpdate:
        m_type = PlatformEvent::GestureScrollUpdate;
        m_data.m_scrollUpdate.m_deltaX = e.data.scrollUpdate.deltaX / scale;
        m_data.m_scrollUpdate.m_deltaY = e.data.scrollUpdate.deltaY / scale;
        m_data.m_scrollUpdate.m_velocityX = e.data.scrollUpdate.velocityX;
        m_data.m_scrollUpdate.m_velocityY = e.data.scrollUpdate.velocityY;
        break;
    case WebInputEvent::GestureScrollUpdateWithoutPropagation:
        m_type = PlatformEvent::GestureScrollUpdateWithoutPropagation;
        m_data.m_scrollUpdate.m_deltaX = e.data.scrollUpdate.deltaX / scale;
        m_data.m_scrollUpdate.m_deltaY = e.data.scrollUpdate.deltaY / scale;
        m_data.m_scrollUpdate.m_velocityX = e.data.scrollUpdate.velocityX;
        m_data.m_scrollUpdate.m_velocityY = e.data.scrollUpdate.velocityY;
        break;
    case WebInputEvent::GestureTap:
        m_type = PlatformEvent::GestureTap;
        m_area = expandedIntSize(FloatSize(e.data.tap.width / scale, e.data.tap.height / scale));
        m_data.m_tap.m_tapCount = e.data.tap.tapCount;
        break;
    case WebInputEvent::GestureTapUnconfirmed:
        m_type = PlatformEvent::GestureTapUnconfirmed;
        m_area = expandedIntSize(FloatSize(e.data.tap.width / scale, e.data.tap.height / scale));
        break;
    case WebInputEvent::GestureTapDown:
        m_type = PlatformEvent::GestureTapDown;
        m_area = expandedIntSize(FloatSize(e.data.tapDown.width / scale, e.data.tapDown.height / scale));
        break;
    case WebInputEvent::GestureShowPress:
        m_type = PlatformEvent::GestureShowPress;
        m_area = expandedIntSize(FloatSize(e.data.showPress.width / scale, e.data.showPress.height / scale));
        break;
    case WebInputEvent::GestureTapCancel:
        m_type = PlatformEvent::GestureTapDownCancel;
        break;
    case WebInputEvent::GestureDoubleTap:
        // DoubleTap gesture is now handled as PlatformEvent::GestureTap with tap_count = 2. So no
        // need to convert to a Platfrom DoubleTap gesture. But in WebViewImpl::handleGestureEvent
        // all WebGestureEvent are converted to PlatformGestureEvent, for completeness and not reach
        // the ASSERT_NOT_REACHED() at the end, convert the DoubleTap to a NoType.
        m_type = PlatformEvent::NoType;
        break;
    case WebInputEvent::GestureTwoFingerTap:
        m_type = PlatformEvent::GestureTwoFingerTap;
        m_area = expandedIntSize(FloatSize(e.data.twoFingerTap.firstFingerWidth / scale, e.data.twoFingerTap.firstFingerHeight / scale));
        break;
    case WebInputEvent::GestureLongPress:
        m_type = PlatformEvent::GestureLongPress;
        m_area = expandedIntSize(FloatSize(e.data.longPress.width / scale, e.data.longPress.height / scale));
        break;
    case WebInputEvent::GestureLongTap:
        m_type = PlatformEvent::GestureLongTap;
        m_area = expandedIntSize(FloatSize(e.data.longPress.width / scale, e.data.longPress.height / scale));
        break;
    case WebInputEvent::GesturePinchBegin:
        m_type = PlatformEvent::GesturePinchBegin;
        break;
    case WebInputEvent::GesturePinchEnd:
        m_type = PlatformEvent::GesturePinchEnd;
        break;
    case WebInputEvent::GesturePinchUpdate:
        m_type = PlatformEvent::GesturePinchUpdate;
        m_data.m_pinchUpdate.m_scale = e.data.pinchUpdate.scale;
        break;
    default:
        ASSERT_NOT_REACHED();
    }
    m_position = widget->convertFromContainingWindow(
        IntPoint((e.x - offset.width()) / scale + pinchViewport.x(), (e.y - offset.height()) / scale + pinchViewport.y()));
    m_globalPosition = IntPoint(e.globalX, e.globalY);
    m_timestamp = e.timeStampSeconds;

    m_modifiers = 0;
    if (e.modifiers & WebInputEvent::ShiftKey)
        m_modifiers |= PlatformEvent::ShiftKey;
    if (e.modifiers & WebInputEvent::ControlKey)
        m_modifiers |= PlatformEvent::CtrlKey;
    if (e.modifiers & WebInputEvent::AltKey)
        m_modifiers |= PlatformEvent::AltKey;
    if (e.modifiers & WebInputEvent::MetaKey)
        m_modifiers |= PlatformEvent::MetaKey;
}
Esempio n. 18
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void SVGImage::drawSVGToImageBuffer(ImageBuffer* buffer, const IntSize& size, float zoom, float scale, ShouldClearBuffer shouldClear)
{
    // FIXME: This doesn't work correctly with animations. If an image contains animations, that say run for 2 seconds,
    // and we currently have one <img> that displays us. If we open another document referencing the same SVGImage it
    // will display the document at a time where animations already ran - even though it has its own ImageBuffer.
    // We currently don't implement SVGSVGElement::setCurrentTime, and can NOT go back in time, once animations started.
    // There's no way to fix this besides avoiding style/attribute mutations from SVGAnimationElement.
    ASSERT(buffer);
    ASSERT(!size.isEmpty());

    if (!m_page)
        return;

    Frame* frame = m_page->mainFrame();
    SVGSVGElement* rootElement = static_cast<SVGDocument*>(frame->document())->rootElement();
    if (!rootElement)
        return;
    RenderSVGRoot* renderer = toRenderSVGRoot(rootElement->renderer());
    if (!renderer)
        return;

    // Draw image at requested size.
    ImageObserver* observer = imageObserver();
    ASSERT(observer);

    // Temporarily reset image observer, we don't want to receive any changeInRect() calls due to this relayout.
    setImageObserver(0);

    // Disable repainting; we don't want deferred repaints to schedule any timers due to this relayout.
    frame->view()->beginDisableRepaints();

    renderer->setContainerSize(size);
    frame->view()->resize(this->size());

    if (zoom != 1)
        frame->setPageZoomFactor(zoom);

    // Eventually clear image buffer.
    IntRect rect(IntPoint(), size);

    FloatRect scaledRect(rect);
    scaledRect.scale(scale);

    if (shouldClear == ClearImageBuffer)
        buffer->context()->clearRect(enclosingIntRect(scaledRect));

    // Draw SVG on top of ImageBuffer.
    draw(buffer->context(), enclosingIntRect(scaledRect), rect, ColorSpaceDeviceRGB, CompositeSourceOver, BlendModeNormal);

    // Reset container size & zoom to initial state. Otherwhise the size() of this
    // image would return whatever last size was set by drawSVGToImageBuffer().
    if (zoom != 1)
        frame->setPageZoomFactor(1);

    // Renderer may have been recreated by frame->setPageZoomFactor(zoom). So fetch it again.
    renderer = toRenderSVGRoot(rootElement->renderer());
    if (renderer)
        renderer->setContainerSize(IntSize());

    frame->view()->resize(this->size());
    if (frame->view()->needsLayout())
        frame->view()->layout();

    setImageObserver(observer);

    frame->view()->endDisableRepaints();
}
Esempio n. 19
0
unsigned LayerPool::backingStoreBytesForSize(const IntSize& size)
{
    return size.width() * size.height() * 4;
}
Esempio n. 20
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ImageData::ImageData(const IntSize& size)
    : m_size(size)
    , m_data(Uint8ClampedArray::createUninitialized(size.width() * size.height() * 4))
{
    ScriptWrappable::init(this);
}
Esempio n. 21
0
void FrameViewAutoSizeInfo::autoSizeIfNeeded()
{
    if (m_inAutoSize)
        return;

    TemporaryChange<bool> changeInAutoSize(m_inAutoSize, true);

    Document* document = m_frameView->frame().document();
    if (!document || !document->isActive())
        return;

    Element* documentElement = document->documentElement();
    if (!documentElement)
        return;

    // If this is the first time we run autosize, start from small height and
    // allow it to grow.
    if (!m_didRunAutosize)
        m_frameView->resize(m_frameView->frameRect().width(), m_minAutoSize.height());

    IntSize size = m_frameView->frameRect().size();

    // Do the resizing twice. The first time is basically a rough calculation using the preferred width
    // which may result in a height change during the second iteration.
    for (int i = 0; i < 2; i++) {
        // Update various sizes including contentsSize, scrollHeight, etc.
        document->updateLayoutIgnorePendingStylesheets();

        RenderView* renderView = document->renderView();
        if (!renderView)
            return;

        int width = renderView->minPreferredLogicalWidth();

        RenderBox* documentRenderBox = documentElement->renderBox();
        if (!documentRenderBox)
            return;

        int height = documentRenderBox->scrollHeight();
        IntSize newSize(width, height);

        // Check to see if a scrollbar is needed for a given dimension and
        // if so, increase the other dimension to account for the scrollbar.
        // Since the dimensions are only for the view rectangle, once a
        // dimension exceeds the maximum, there is no need to increase it further.
        if (newSize.width() > m_maxAutoSize.width()) {
            RefPtrWillBeRawPtr<Scrollbar> localHorizontalScrollbar = m_frameView->horizontalScrollbar();
            if (!localHorizontalScrollbar)
                localHorizontalScrollbar = m_frameView->createScrollbar(HorizontalScrollbar);
            if (!localHorizontalScrollbar->isOverlayScrollbar())
                newSize.setHeight(newSize.height() + localHorizontalScrollbar->height());

            // Don't bother checking for a vertical scrollbar because the width is at
            // already greater the maximum.
        } else if (newSize.height() > m_maxAutoSize.height()) {
            RefPtrWillBeRawPtr<Scrollbar> localVerticalScrollbar = m_frameView->verticalScrollbar();
            if (!localVerticalScrollbar)
                localVerticalScrollbar = m_frameView->createScrollbar(VerticalScrollbar);
            if (!localVerticalScrollbar->isOverlayScrollbar())
                newSize.setWidth(newSize.width() + localVerticalScrollbar->width());

            // Don't bother checking for a horizontal scrollbar because the height is
            // already greater the maximum.
        }

        // Ensure the size is at least the min bounds.
        newSize = newSize.expandedTo(m_minAutoSize);

        // Bound the dimensions by the max bounds and determine what scrollbars to show.
        ScrollbarMode horizonalScrollbarMode = ScrollbarAlwaysOff;
        if (newSize.width() > m_maxAutoSize.width()) {
            newSize.setWidth(m_maxAutoSize.width());
            horizonalScrollbarMode = ScrollbarAlwaysOn;
        }
        ScrollbarMode verticalScrollbarMode = ScrollbarAlwaysOff;
        if (newSize.height() > m_maxAutoSize.height()) {
            newSize.setHeight(m_maxAutoSize.height());
            verticalScrollbarMode = ScrollbarAlwaysOn;
        }

        if (newSize == size)
            continue;

        // While loading only allow the size to increase (to avoid twitching during intermediate smaller states)
        // unless autoresize has just been turned on or the maximum size is smaller than the current size.
        if (m_didRunAutosize && size.height() <= m_maxAutoSize.height() && size.width() <= m_maxAutoSize.width()
            && !m_frameView->frame().document()->loadEventFinished() && (newSize.height() < size.height() || newSize.width() < size.width()))
            break;

        m_frameView->resize(newSize.width(), newSize.height());
        // Force the scrollbar state to avoid the scrollbar code adding them and causing them to be needed. For example,
        // a vertical scrollbar may cause text to wrap and thus increase the height (which is the only reason the scollbar is needed).
        m_frameView->setVerticalScrollbarLock(false);
        m_frameView->setHorizontalScrollbarLock(false);
        m_frameView->setScrollbarModes(horizonalScrollbarMode, verticalScrollbarMode, true, true);
    }
    m_didRunAutosize = true;
}
Esempio n. 22
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void DrawingAreaImpl::display(UpdateInfo& updateInfo)
{
    ASSERT(!m_isPaintingSuspended);
    ASSERT(!m_layerTreeHost);
    ASSERT(!m_webPage->size().isEmpty());

    // FIXME: It would be better if we could avoid painting altogether when there is a custom representation.
    if (m_webPage->mainFrameHasCustomRepresentation()) {
        // ASSUMPTION: the custom representation will be painting the dirty region for us.
        m_dirtyRegion = Region();
        return;
    }

    m_webPage->layoutIfNeeded();

    // The layout may have put the page into accelerated compositing mode. If the LayerTreeHost is
    // in charge of displaying, we have nothing more to do.
    if (m_layerTreeHost)
        return;

    updateInfo.viewSize = m_webPage->size();
    updateInfo.deviceScaleFactor = m_webPage->corePage()->deviceScaleFactor();

    IntRect bounds = m_dirtyRegion.bounds();
    ASSERT(m_webPage->bounds().contains(bounds));

    IntSize bitmapSize = bounds.size();
    float deviceScaleFactor = m_webPage->corePage()->deviceScaleFactor();
    bitmapSize.scale(deviceScaleFactor);
    RefPtr<ShareableBitmap> bitmap = ShareableBitmap::createShareable(bitmapSize, ShareableBitmap::SupportsAlpha);
    if (!bitmap)
        return;

    if (!bitmap->createHandle(updateInfo.bitmapHandle))
        return;

    Vector<IntRect> rects = m_dirtyRegion.rects();

    if (shouldPaintBoundsRect(bounds, rects)) {
        rects.clear();
        rects.append(bounds);
    }

    updateInfo.scrollRect = m_scrollRect;
    updateInfo.scrollOffset = m_scrollOffset;

    m_dirtyRegion = Region();
    m_scrollRect = IntRect();
    m_scrollOffset = IntSize();

    OwnPtr<GraphicsContext> graphicsContext = createGraphicsContext(bitmap.get());
    graphicsContext->applyDeviceScaleFactor(deviceScaleFactor);
    
    updateInfo.updateRectBounds = bounds;

    graphicsContext->translate(-bounds.x(), -bounds.y());

    for (size_t i = 0; i < rects.size(); ++i) {
        m_webPage->drawRect(*graphicsContext, rects[i]);
        if (m_webPage->hasPageOverlay())
            m_webPage->drawPageOverlay(*graphicsContext, rects[i]);
        updateInfo.updateRects.append(rects[i]);
    }

    // Layout can trigger more calls to setNeedsDisplay and we don't want to process them
    // until the UI process has painted the update, so we stop the timer here.
    m_displayTimer.stop();
}
bool GraphicsContext3D::reshapeFBOs(const IntSize& size)
{
    const int width = size.width();
    const int height = size.height();
    GLuint colorFormat, internalDepthStencilFormat = 0;
    if (m_attrs.alpha) {
        m_internalColorFormat = GL_RGBA8;
        colorFormat = GL_RGBA;
    } else {
        m_internalColorFormat = GL_RGB8;
        colorFormat = GL_RGB;
    }
    if (m_attrs.stencil || m_attrs.depth) {
        // We don't allow the logic where stencil is required and depth is not.
        // See GraphicsContext3D::validateAttributes.

        Extensions3D* extensions = getExtensions();
        // Use a 24 bit depth buffer where we know we have it.
        if (extensions->supports("GL_EXT_packed_depth_stencil"))
            internalDepthStencilFormat = GL_DEPTH24_STENCIL8_EXT;
        else
            internalDepthStencilFormat = GL_DEPTH_COMPONENT;
    }

    bool mustRestoreFBO = false;

    // Resize multisample FBO.
    if (m_attrs.antialias) {
        GLint maxSampleCount;
        ::glGetIntegerv(GL_MAX_SAMPLES_EXT, &maxSampleCount);
        GLint sampleCount = std::min(8, maxSampleCount);
        if (sampleCount > maxSampleCount)
            sampleCount = maxSampleCount;
        if (m_boundFBO != m_multisampleFBO) {
            ::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_multisampleFBO);
            mustRestoreFBO = true;
        }
        ::glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, m_multisampleColorBuffer);
        ::glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, sampleCount, m_internalColorFormat, width, height);
        ::glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER_EXT, m_multisampleColorBuffer);
        if (m_attrs.stencil || m_attrs.depth) {
            ::glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, m_multisampleDepthStencilBuffer);
            ::glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, sampleCount, internalDepthStencilFormat, width, height);
            if (m_attrs.stencil)
                ::glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, m_multisampleDepthStencilBuffer);
            if (m_attrs.depth)
                ::glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, m_multisampleDepthStencilBuffer);
        }
        ::glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
        if (glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE_EXT) {
            // FIXME: cleanup.
            notImplemented();
        }
    }

    // resize regular FBO
    if (m_boundFBO != m_fbo) {
        mustRestoreFBO = true;
        ::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo);
    }
    ::glBindTexture(GL_TEXTURE_2D, m_texture);
    ::glTexImage2D(GL_TEXTURE_2D, 0, m_internalColorFormat, width, height, 0, colorFormat, GL_UNSIGNED_BYTE, 0);
    ::glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, m_texture, 0);
    ::glBindTexture(GL_TEXTURE_2D, m_compositorTexture);
    ::glTexImage2D(GL_TEXTURE_2D, 0, m_internalColorFormat, width, height, 0, colorFormat, GL_UNSIGNED_BYTE, 0);
    ::glBindTexture(GL_TEXTURE_2D, 0);
    if (!m_attrs.antialias && (m_attrs.stencil || m_attrs.depth)) {
        ::glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, m_depthStencilBuffer);
        ::glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, internalDepthStencilFormat, width, height);
        if (m_attrs.stencil)
            ::glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, m_depthStencilBuffer);
        if (m_attrs.depth)
            ::glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, m_depthStencilBuffer);
        ::glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
    }
    if (glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE_EXT) {
        // FIXME: cleanup
        notImplemented();
    }

    if (m_attrs.antialias) {
        ::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_multisampleFBO);
        if (m_boundFBO == m_multisampleFBO)
            mustRestoreFBO = false;
    }

    return mustRestoreFBO;
}
static void drawGDIGlyphs(GraphicsContext* graphicsContext, const SimpleFontData* font, const GlyphBuffer& glyphBuffer, 
                      int from, int numGlyphs, const FloatPoint& point)
{
    Color fillColor = graphicsContext->fillColor();

    bool drawIntoBitmap = false;
    int drawingMode = graphicsContext->textDrawingMode();
    if (drawingMode == cTextFill) {
        if (!fillColor.alpha())
            return;

        drawIntoBitmap = fillColor.alpha() != 255 || graphicsContext->inTransparencyLayer();
        if (!drawIntoBitmap) {
            IntSize size;
            int blur;
            Color color;
            graphicsContext->getShadow(size, blur, color);
            drawIntoBitmap = !size.isEmpty() || blur;
        }
    }

    // We have to convert CG's two-dimensional floating point advances to just horizontal integer advances.
    Vector<int, 2048> gdiAdvances;
    int totalWidth = 0;
    for (int i = 0; i < numGlyphs; i++) {
        gdiAdvances.append(lroundf(glyphBuffer.advanceAt(from + i)));
        totalWidth += gdiAdvances[i];
    }

    HDC hdc = 0;
    OwnPtr<GraphicsContext::WindowsBitmap> bitmap;
    IntRect textRect;
    if (!drawIntoBitmap)
        hdc = graphicsContext->getWindowsContext(textRect, true, false);
    if (!hdc) {
        drawIntoBitmap = true;
        // We put slop into this rect, since glyphs can overflow the ascent/descent bounds and the left/right edges.
        // FIXME: Can get glyphs' optical bounds (even from CG) to get this right.
        int lineGap = font->lineGap();
        textRect = IntRect(point.x() - (font->ascent() + font->descent()) / 2, point.y() - font->ascent() - lineGap, totalWidth + font->ascent() + font->descent(), font->lineSpacing());
        bitmap.set(graphicsContext->createWindowsBitmap(textRect.size()));
        memset(bitmap->buffer(), 255, bitmap->bufferLength());
        hdc = bitmap->hdc();

        XFORM xform;
        xform.eM11 = 1.0f;
        xform.eM12 = 0.0f;
        xform.eM21 = 0.0f;
        xform.eM22 = 1.0f;
        xform.eDx = -textRect.x();
        xform.eDy = -textRect.y();
        SetWorldTransform(hdc, &xform);
    }

    SelectObject(hdc, font->platformData().hfont());

    // Set the correct color.
    if (drawIntoBitmap)
        SetTextColor(hdc, RGB(0, 0, 0));
    else
        SetTextColor(hdc, RGB(fillColor.red(), fillColor.green(), fillColor.blue()));

    SetBkMode(hdc, TRANSPARENT);
    SetTextAlign(hdc, TA_LEFT | TA_BASELINE);

    // Uniscribe gives us offsets to help refine the positioning of combining glyphs.
    FloatSize translation = glyphBuffer.offsetAt(from);
    if (translation.width() || translation.height()) {
        XFORM xform;
        xform.eM11 = 1.0;
        xform.eM12 = 0;
        xform.eM21 = 0;
        xform.eM22 = 1.0;
        xform.eDx = translation.width();
        xform.eDy = translation.height();
        ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY);
    }

    if (drawingMode == cTextFill) {
        XFORM xform;
        xform.eM11 = 1.0;
        xform.eM12 = 0;
        xform.eM21 = font->platformData().syntheticOblique() ? -tanf(syntheticObliqueAngle * piFloat / 180.0f) : 0;
        xform.eM22 = 1.0;
        xform.eDx = point.x();
        xform.eDy = point.y();
        ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY);
        ExtTextOut(hdc, 0, 0, ETO_GLYPH_INDEX, 0, reinterpret_cast<const WCHAR*>(glyphBuffer.glyphs(from)), numGlyphs, gdiAdvances.data());
        if (font->syntheticBoldOffset()) {
            xform.eM21 = 0;
            xform.eDx = font->syntheticBoldOffset();
            xform.eDy = 0;
            ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY);
            ExtTextOut(hdc, 0, 0, ETO_GLYPH_INDEX, 0, reinterpret_cast<const WCHAR*>(glyphBuffer.glyphs(from)), numGlyphs, gdiAdvances.data());
        }
    } else {
        XFORM xform;
        GetWorldTransform(hdc, &xform);
        TransformationMatrix hdcTransform(xform.eM11, xform.eM21, xform.eM12, xform.eM22, xform.eDx, xform.eDy);
        CGAffineTransform initialGlyphTransform = hdcTransform.isInvertible() ? hdcTransform.inverse() : CGAffineTransformIdentity;
        if (font->platformData().syntheticOblique())
            initialGlyphTransform = CGAffineTransformConcat(initialGlyphTransform, CGAffineTransformMake(1, 0, tanf(syntheticObliqueAngle * piFloat / 180.0f), 1, 0, 0));
        initialGlyphTransform.tx = 0;
        initialGlyphTransform.ty = 0;
        CGContextRef cgContext = graphicsContext->platformContext();

        CGContextSaveGState(cgContext);

        BOOL fontSmoothingEnabled = false;
        SystemParametersInfo(SPI_GETFONTSMOOTHING, 0, &fontSmoothingEnabled, 0);
        CGContextSetShouldAntialias(cgContext, fontSmoothingEnabled);

        CGContextScaleCTM(cgContext, 1.0, -1.0);
        CGContextTranslateCTM(cgContext, point.x() + glyphBuffer.offsetAt(from).width(), -(point.y() + glyphBuffer.offsetAt(from).height()));

        for (unsigned i = 0; i < numGlyphs; ++i) {
            RetainPtr<CGPathRef> glyphPath(AdoptCF, createPathForGlyph(hdc, glyphBuffer.glyphAt(from + i)));
            CGContextSaveGState(cgContext);
            CGContextConcatCTM(cgContext, initialGlyphTransform);

            if (drawingMode & cTextFill) {
                CGContextAddPath(cgContext, glyphPath.get());
                CGContextFillPath(cgContext);
                if (font->syntheticBoldOffset()) {
                    CGContextTranslateCTM(cgContext, font->syntheticBoldOffset(), 0);
                    CGContextAddPath(cgContext, glyphPath.get());
                    CGContextFillPath(cgContext);
                    CGContextTranslateCTM(cgContext, -font->syntheticBoldOffset(), 0);
                }
            }
            if (drawingMode & cTextStroke) {
                CGContextAddPath(cgContext, glyphPath.get());
                CGContextStrokePath(cgContext);
                if (font->syntheticBoldOffset()) {
                    CGContextTranslateCTM(cgContext, font->syntheticBoldOffset(), 0);
                    CGContextAddPath(cgContext, glyphPath.get());
                    CGContextStrokePath(cgContext);
                    CGContextTranslateCTM(cgContext, -font->syntheticBoldOffset(), 0);
                }
            }

            CGContextRestoreGState(cgContext);
            CGContextTranslateCTM(cgContext, gdiAdvances[i], 0);
        }

        CGContextRestoreGState(cgContext);
    }

    if (drawIntoBitmap) {
        UInt8* buffer = bitmap->buffer();
        unsigned bufferLength = bitmap->bufferLength();
        for (unsigned i = 0; i < bufferLength; i += 4) {
            // Use green, which is always in the middle.
            UInt8 alpha = (255 - buffer[i + 1]) * fillColor.alpha() / 255;
            buffer[i] = fillColor.blue();
            buffer[i + 1] = fillColor.green();
            buffer[i + 2] = fillColor.red();
            buffer[i + 3] = alpha;
        }
        graphicsContext->drawWindowsBitmap(bitmap.get(), textRect.topLeft());
    } else
        graphicsContext->releaseWindowsContext(hdc, textRect, true, false);
}
Esempio n. 25
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bool GraphicsContext3D::ImageExtractor::extractImage(bool premultiplyAlpha, bool ignoreGammaAndColorProfile)
{
    if (!m_image)
        return false;
    // We need this to stay in scope because the native image is just a shallow copy of the data.
    AlphaOption alphaOption = premultiplyAlpha ? AlphaOption::Premultiplied : AlphaOption::NotPremultiplied;
    GammaAndColorProfileOption gammaAndColorProfileOption = ignoreGammaAndColorProfile ? GammaAndColorProfileOption::Ignored : GammaAndColorProfileOption::Applied;
    m_decoder = new ImageSource(nullptr, alphaOption, gammaAndColorProfileOption);
    
    if (!m_decoder)
        return false;

    ImageSource& decoder = *m_decoder;
    m_alphaOp = AlphaDoNothing;

    if (m_image->data()) {
        decoder.setData(m_image->data(), true);
        if (!decoder.frameCount())
            return false;
        m_imageSurface = decoder.createFrameImageAtIndex(0);
    } else {
        m_imageSurface = m_image->nativeImageForCurrentFrame();
        // 1. For texImage2D with HTMLVideoElment input, assume no PremultiplyAlpha had been applied and the alpha value is 0xFF for each pixel,
        // which is true at present and may be changed in the future and needs adjustment accordingly.
        // 2. For texImage2D with HTMLCanvasElement input in which Alpha is already Premultiplied in this port, 
        // do AlphaDoUnmultiply if UNPACK_PREMULTIPLY_ALPHA_WEBGL is set to false.
        if (!premultiplyAlpha && m_imageHtmlDomSource != HtmlDomVideo)
            m_alphaOp = AlphaDoUnmultiply;

        // if m_imageSurface is not an image, extract a copy of the surface
        if (m_imageSurface && cairo_surface_get_type(m_imageSurface.get()) != CAIRO_SURFACE_TYPE_IMAGE) {
            IntSize surfaceSize = cairoSurfaceSize(m_imageSurface.get());
            auto tmpSurface = adoptRef(cairo_image_surface_create(CAIRO_FORMAT_ARGB32, surfaceSize.width(), surfaceSize.height()));
            copyRectFromOneSurfaceToAnother(m_imageSurface.get(), tmpSurface.get(), IntSize(), IntRect(IntPoint(), surfaceSize), IntSize(), CAIRO_OPERATOR_SOURCE);
            m_imageSurface = WTFMove(tmpSurface);
        }
    }

    if (!m_imageSurface)
        return false;

    ASSERT(cairo_surface_get_type(m_imageSurface.get()) == CAIRO_SURFACE_TYPE_IMAGE);

    IntSize imageSize = cairoSurfaceSize(m_imageSurface.get());
    m_imageWidth = imageSize.width();
    m_imageHeight = imageSize.height();
    if (!m_imageWidth || !m_imageHeight)
        return false;

    if (cairo_image_surface_get_format(m_imageSurface.get()) != CAIRO_FORMAT_ARGB32)
        return false;

    unsigned int srcUnpackAlignment = 1;
    size_t bytesPerRow = cairo_image_surface_get_stride(m_imageSurface.get());
    size_t bitsPerPixel = 32;
    unsigned padding = bytesPerRow - bitsPerPixel / 8 * m_imageWidth;
    if (padding) {
        srcUnpackAlignment = padding + 1;
        while (bytesPerRow % srcUnpackAlignment)
            ++srcUnpackAlignment;
    }

    m_imagePixelData = cairo_image_surface_get_data(m_imageSurface.get());
    m_imageSourceFormat = DataFormatBGRA8;
    m_imageSourceUnpackAlignment = srcUnpackAlignment;
    return true;
}
void Font::drawGlyphs(GraphicsContext* graphicsContext, const SimpleFontData* font, const GlyphBuffer& glyphBuffer, 
                      int from, int numGlyphs, const FloatPoint& point) const
{
    CGContextRef cgContext = graphicsContext->platformContext();
    bool shouldUseFontSmoothing = WebCoreShouldUseFontSmoothing();

    if (font->platformData().useGDI()) {
        if (!shouldUseFontSmoothing || (graphicsContext->textDrawingMode() & cTextStroke)) {
            drawGDIGlyphs(graphicsContext, font, glyphBuffer, from, numGlyphs, point);
            return;
        }
    }

    uint32_t oldFontSmoothingStyle = wkSetFontSmoothingStyle(cgContext, shouldUseFontSmoothing);

    const FontPlatformData& platformData = font->platformData();

    CGContextSetFont(cgContext, platformData.cgFont());

    CGAffineTransform matrix = CGAffineTransformIdentity;
    matrix.b = -matrix.b;
    matrix.d = -matrix.d;

    if (platformData.syntheticOblique()) {
        static float skew = -tanf(syntheticObliqueAngle * piFloat / 180.0f);
        matrix = CGAffineTransformConcat(matrix, CGAffineTransformMake(1, 0, skew, 1, 0, 0));
    }

    CGContextSetTextMatrix(cgContext, matrix);

    // Uniscribe gives us offsets to help refine the positioning of combining glyphs.
    FloatSize translation = glyphBuffer.offsetAt(from);

    CGContextSetFontSize(cgContext, platformData.size());
    wkSetCGContextFontRenderingStyle(cgContext, font->isSystemFont(), false, font->platformData().useGDI());

    IntSize shadowSize;
    int shadowBlur;
    Color shadowColor;
    graphicsContext->getShadow(shadowSize, shadowBlur, shadowColor);

    bool hasSimpleShadow = graphicsContext->textDrawingMode() == cTextFill && shadowColor.isValid() && !shadowBlur;
    if (hasSimpleShadow) {
        // Paint simple shadows ourselves instead of relying on CG shadows, to avoid losing subpixel antialiasing.
        graphicsContext->clearShadow();
        Color fillColor = graphicsContext->fillColor();
        Color shadowFillColor(shadowColor.red(), shadowColor.green(), shadowColor.blue(), shadowColor.alpha() * fillColor.alpha() / 255);
        graphicsContext->setFillColor(shadowFillColor);
        CGContextSetTextPosition(cgContext, point.x() + translation.width() + shadowSize.width(), point.y() + translation.height() + shadowSize.height());
        CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
        if (font->syntheticBoldOffset()) {
            CGContextSetTextPosition(cgContext, point.x() + translation.width() + shadowSize.width() + font->syntheticBoldOffset(), point.y() + translation.height() + shadowSize.height());
            CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
        }
        graphicsContext->setFillColor(fillColor);
    }

    CGContextSetTextPosition(cgContext, point.x() + translation.width(), point.y() + translation.height());
    CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
    if (font->syntheticBoldOffset()) {
        CGContextSetTextPosition(cgContext, point.x() + translation.width() + font->syntheticBoldOffset(), point.y() + translation.height());
        CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
    }

    if (hasSimpleShadow)
        graphicsContext->setShadow(shadowSize, shadowBlur, shadowColor);

    wkRestoreFontSmoothingStyle(cgContext, oldFontSmoothingStyle);
}
Esempio n. 27
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void ChromeClientEfl::contentsSizeChanged(Frame* frame, const IntSize& size) const
{
    ewk_frame_contents_size_changed(kit(frame), size.width(), size.height());
    if (ewk_view_frame_main_get(m_view) == kit(frame))
        ewk_view_contents_size_changed(m_view, size.width(), size.height());
}
Esempio n. 28
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DragImageRef WebDragClient::createDragImageForLink(KURL& url, const String& inLabel, Frame* frame)
{
    // This is more or less an exact match for the Mac OS X code.

    const Font* labelFont;
    const Font* urlFont;

    if (frame->settings() && frame->settings()->fontRenderingMode() == AlternateRenderingMode) {
        static const Font alternateRenderingModeLabelFont = dragLabelFont(DRAG_LINK_LABEL_FONT_SIZE, true, AlternateRenderingMode);
        static const Font alternateRenderingModeURLFont = dragLabelFont(DRAG_LINK_URL_FONT_SIZE, false, AlternateRenderingMode);
        labelFont = &alternateRenderingModeLabelFont;
        urlFont = &alternateRenderingModeURLFont;
    } else {
        static const Font normalRenderingModeLabelFont = dragLabelFont(DRAG_LINK_LABEL_FONT_SIZE, true, NormalRenderingMode);
        static const Font normalRenderingModeURLFont = dragLabelFont(DRAG_LINK_URL_FONT_SIZE, false, NormalRenderingMode);
        labelFont = &normalRenderingModeLabelFont;
        urlFont = &normalRenderingModeURLFont;
    }

    bool drawURLString = true;
    bool clipURLString = false;
    bool clipLabelString = false;

    String urlString = url.string(); 
    String label = inLabel;
    if (label.isEmpty()) {
        drawURLString = false;
        label = urlString;
    }

    //First step in drawing the link drag image width
    TextRun labelRun(label.impl());
    TextRun urlRun(urlString.impl());
    IntSize labelSize(labelFont->width(labelRun), labelFont->fontMetrics().ascent() + labelFont->fontMetrics().descent());

    if (labelSize.width() > MAX_DRAG_LABEL_STRING_WIDTH){
        labelSize.setWidth(MAX_DRAG_LABEL_STRING_WIDTH);
        clipLabelString = true;
    }
    
    IntSize urlStringSize;
    IntSize imageSize(labelSize.width() + DRAG_LABEL_BORDER_X * 2, 
                      labelSize.height() + DRAG_LABEL_BORDER_Y * 2);

    if (drawURLString) {
        urlStringSize.setWidth(urlFont->width(urlRun));
        urlStringSize.setHeight(urlFont->fontMetrics().ascent() + urlFont->fontMetrics().descent()); 
        imageSize.setHeight(imageSize.height() + urlStringSize.height());
        if (urlStringSize.width() > MAX_DRAG_LABEL_STRING_WIDTH) {
            imageSize.setWidth(MAX_DRAG_LABEL_WIDTH);
            clipURLString = true;
        } else {
            imageSize.setWidth(std::max(labelSize.width(), urlStringSize.width()) + DRAG_LABEL_BORDER_X * 2);
        }
    }

    // We now know how big the image needs to be, so we create and
    // fill the background
    HBITMAP image = 0;
    HDC dc = GetDC(0);
    HDC workingDC = CreateCompatibleDC(dc);
    if (!workingDC) {
        ReleaseDC(0, dc);
        return 0;
    }

    PlatformGraphicsContext* contextRef;
    image = allocImage(workingDC, imageSize, &contextRef);
    if (!image) {
        DeleteDC(workingDC);
        ReleaseDC(0, dc);
        return 0;
    }
        
    ::SelectObject(workingDC, image);
    GraphicsContext context(contextRef);
    // On Mac alpha is {0.7, 0.7, 0.7, 0.8}, however we can't control alpha
    // for drag images on win, so we use 1
    static const Color backgroundColor(140, 140, 140);
    static const IntSize radii(DRAG_LABEL_RADIUS, DRAG_LABEL_RADIUS);
    IntRect rect(0, 0, imageSize.width(), imageSize.height());
    context.fillRoundedRect(rect, radii, radii, radii, radii, backgroundColor, ColorSpaceDeviceRGB);
 
    // Draw the text
    static const Color topColor(0, 0, 0, 255); //original alpha = 0.75
    static const Color bottomColor(255, 255, 255, 127); //original alpha = 0.5
    if (drawURLString) {
        if (clipURLString)
            urlString = StringTruncator::rightTruncate(urlString, imageSize.width() - (DRAG_LABEL_BORDER_X * 2.0f), *urlFont, false);
        IntPoint textPos(DRAG_LABEL_BORDER_X, imageSize.height() - (DRAG_LABEL_BORDER_Y_OFFSET + urlFont->fontMetrics().descent()));
        WebCoreDrawDoubledTextAtPoint(context, urlString, textPos, *urlFont, topColor, bottomColor);
    }
    
    if (clipLabelString)
        label = StringTruncator::rightTruncate(label, imageSize.width() - (DRAG_LABEL_BORDER_X * 2.0f), *labelFont, false);

    IntPoint textPos(DRAG_LABEL_BORDER_X, DRAG_LABEL_BORDER_Y + labelFont->pixelSize());
    WebCoreDrawDoubledTextAtPoint(context, label, textPos, *labelFont, topColor, bottomColor);

    deallocContext(contextRef);
    DeleteDC(workingDC);
    ReleaseDC(0, dc);
    return image;
}
Esempio n. 29
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void ImageBuffer::putByteArray(Multiply multiplied, Uint8ClampedArray* source, const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint, CoordinateSystem)
{

    ASSERT(sourceRect.width() > 0);
    ASSERT(sourceRect.height() > 0);

    int originx = sourceRect.x();
    int destx = destPoint.x() + sourceRect.x();
    ASSERT(destx >= 0);
    ASSERT(destx < m_size.width());
    ASSERT(originx >= 0);
    ASSERT(originx <= sourceRect.maxX());

    int endx = destPoint.x() + sourceRect.maxX();
    ASSERT(endx <= m_size.width());

    int numColumns = endx - destx;

    int originy = sourceRect.y();
    int desty = destPoint.y() + sourceRect.y();
    ASSERT(desty >= 0);
    ASSERT(desty < m_size.height());
    ASSERT(originy >= 0);
    ASSERT(originy <= sourceRect.maxY());

    int endy = destPoint.y() + sourceRect.maxY();
    ASSERT(endy <= m_size.height());
    int numRows = endy - desty;

    IntRect imageRect(destx, desty, numColumns, numRows);
    RefPtr<cairo_surface_t> imageSurface = copySurfaceToImageAndAdjustRect(m_data.m_surface.get(), imageRect);
    destx = imageRect.x();
    desty = imageRect.y();

    unsigned char* pixelData = cairo_image_surface_get_data(imageSurface.get());

    unsigned srcBytesPerRow = 4 * sourceSize.width();
    int stride = cairo_image_surface_get_stride(imageSurface.get());

    unsigned char* srcRows = source->data() + originy * srcBytesPerRow + originx * 4;
    for (int y = 0; y < numRows; ++y) {
        unsigned* row = reinterpret_cast_ptr<unsigned*>(pixelData + stride * (y + desty));
        for (int x = 0; x < numColumns; x++) {
            int basex = x * 4;
            unsigned* pixel = row + x + destx;

            // Avoid calling Color::premultipliedARGBFromColor() because one
            // function call per pixel is too expensive.
            unsigned red = srcRows[basex];
            unsigned green = srcRows[basex + 1];
            unsigned blue = srcRows[basex + 2];
            unsigned alpha = srcRows[basex + 3];

            if (multiplied == Unmultiplied) {
                if (alpha != 255) {
                    red = (red * alpha + 254) / 255;
                    green = (green * alpha + 254) / 255;
                    blue = (blue * alpha + 254) / 255;
                }
            }

            *pixel = (alpha << 24) | red  << 16 | green  << 8 | blue;
        }
        srcRows += srcBytesPerRow;
    }

    cairo_surface_mark_dirty_rectangle(imageSurface.get(), destx, desty, numColumns, numRows);

    if (imageSurface != m_data.m_surface.get())
        copyRectFromOneSurfaceToAnother(imageSurface.get(), m_data.m_surface.get(), IntSize(), IntRect(0, 0, numColumns, numRows), IntSize(destPoint.x() + sourceRect.x(), destPoint.y() + sourceRect.y()), CAIRO_OPERATOR_SOURCE);
}
Esempio n. 30
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FloatSize DragImage::clampedImageScale(const IntSize& imageSize, const IntSize& size,
    const IntSize& maxSize)
{
    // Non-uniform scaling for size mapping.
    FloatSize imageScale(
        static_cast<float>(size.width()) / imageSize.width(),
        static_cast<float>(size.height()) / imageSize.height());

    // Uniform scaling for clamping.
    const float clampScaleX = size.width() > maxSize.width()
        ? static_cast<float>(maxSize.width()) / size.width() : 1;
    const float clampScaleY = size.height() > maxSize.height()
        ? static_cast<float>(maxSize.height()) / size.height() : 1;
    imageScale.scale(std::min(clampScaleX, clampScaleY));

    return imageScale;
}