void RenderSVGRoot::computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio) const
{
// Spec: http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing
// SVG needs to specify how to calculate some intrinsic sizing properties to enable inclusion within other languages.
// The intrinsic aspect ratio of the viewport of SVG content is necessary for example, when including SVG from an ‘object’
// element in HTML styled with CSS. It is possible (indeed, common) for an SVG graphic to have an intrinsic aspect ratio but
// not to have an intrinsic width or height. The intrinsic aspect ratio must be calculated based upon the following rules:
// - The aspect ratio is calculated by dividing a width by a height.
// - If the ‘width’ and ‘height’ of the rootmost ‘svg’ element are both specified with unit identifiers (in, mm, cm, pt, pc,
// px, em, ex) or in user units, then the aspect ratio is calculated from the ‘width’ and ‘height’ attributes after
// resolving both values to user units.
intrinsicSize.setWidth(floatValueForLength(svgSVGElement().intrinsicWidth(), 0));
intrinsicSize.setHeight(floatValueForLength(svgSVGElement().intrinsicHeight(), 0));
if (!intrinsicSize.isEmpty())
intrinsicRatio = intrinsicSize.width() / static_cast<double>(intrinsicSize.height());
else {
// - If either/both of the ‘width’ and ‘height’ of the rootmost ‘svg’ element are in percentage units (or omitted), the
// aspect ratio is calculated from the width and height values of the ‘viewBox’ specified for the current SVG document
// fragment. If the ‘viewBox’ is not correctly specified, or set to 'none', the intrinsic aspect ratio cannot be
// calculated and is considered unspecified.
FloatSize viewBoxSize = svgSVGElement().viewBox().size();
if (!viewBoxSize.isEmpty()) {
// The viewBox can only yield an intrinsic ratio, not an intrinsic size.
intrinsicRatio = viewBoxSize.width() / static_cast<double>(viewBoxSize.height());
}
}
}
FloatPoint FixedPositionViewportConstraints::layerPositionForViewportRect(const FloatRect& viewportRect) const
{
FloatSize offset;
if (hasAnchorEdge(AnchorEdgeLeft))
offset.setWidth(viewportRect.x() - m_viewportRectAtLastLayout.x());
else if (hasAnchorEdge(AnchorEdgeRight))
offset.setWidth(viewportRect.maxX() - m_viewportRectAtLastLayout.maxX());
if (hasAnchorEdge(AnchorEdgeTop))
offset.setHeight(viewportRect.y() - m_viewportRectAtLastLayout.y());
else if (hasAnchorEdge(AnchorEdgeBottom))
offset.setHeight(viewportRect.maxY() - m_viewportRectAtLastLayout.maxY());
return m_layerPositionAtLastLayout + offset;
}
FloatSize LayoutReplaced::constrainIntrinsicSizeToMinMax(
const IntrinsicSizingInfo& intrinsicSizingInfo) const {
// Constrain the intrinsic size along each axis according to minimum and
// maximum width/heights along the opposite axis. So for example a maximum
// width that shrinks our width will result in the height we compute here
// having to shrink in order to preserve the aspect ratio. Because we compute
// these values independently along each axis, the final returned size may in
// fact not preserve the aspect ratio.
// TODO(davve): Investigate using only the intrinsic aspect ratio here.
FloatSize constrainedSize = intrinsicSizingInfo.size;
if (!intrinsicSizingInfo.aspectRatio.isEmpty() &&
!intrinsicSizingInfo.size.isEmpty() && style()->logicalWidth().isAuto() &&
style()->logicalHeight().isAuto()) {
// We can't multiply or divide by 'intrinsicSizingInfo.aspectRatio' here, it
// breaks tests, like fast/images/zoomed-img-size.html, which
// can only be fixed once subpixel precision is available for things like
// intrinsicWidth/Height - which include zoom!
constrainedSize.setWidth(LayoutBox::computeReplacedLogicalHeight() *
intrinsicSizingInfo.size.width() /
intrinsicSizingInfo.size.height());
constrainedSize.setHeight(LayoutBox::computeReplacedLogicalWidth() *
intrinsicSizingInfo.size.height() /
intrinsicSizingInfo.size.width());
}
return constrainedSize;
}
void Image::drawTiled(GraphicsContext* ctxt, const FloatRect& destRect, const FloatPoint& srcPoint, const FloatSize& scaledTileSize, SkXfermode::Mode op, const IntSize& repeatSpacing)
{
FloatSize intrinsicTileSize = size();
if (hasRelativeWidth())
intrinsicTileSize.setWidth(scaledTileSize.width());
if (hasRelativeHeight())
intrinsicTileSize.setHeight(scaledTileSize.height());
FloatSize scale(scaledTileSize.width() / intrinsicTileSize.width(),
scaledTileSize.height() / intrinsicTileSize.height());
FloatSize actualTileSize(scaledTileSize.width() + repeatSpacing.width(), scaledTileSize.height() + repeatSpacing.height());
FloatRect oneTileRect;
oneTileRect.setX(destRect.x() + fmodf(fmodf(-srcPoint.x(), actualTileSize.width()) - actualTileSize.width(), actualTileSize.width()));
oneTileRect.setY(destRect.y() + fmodf(fmodf(-srcPoint.y(), actualTileSize.height()) - actualTileSize.height(), actualTileSize.height()));
oneTileRect.setSize(scaledTileSize);
// Check and see if a single draw of the image can cover the entire area we are supposed to tile.
if (oneTileRect.contains(destRect)) {
FloatRect visibleSrcRect;
visibleSrcRect.setX((destRect.x() - oneTileRect.x()) / scale.width());
visibleSrcRect.setY((destRect.y() - oneTileRect.y()) / scale.height());
visibleSrcRect.setWidth(destRect.width() / scale.width());
visibleSrcRect.setHeight(destRect.height() / scale.height());
ctxt->drawImage(this, destRect, visibleSrcRect, op, DoNotRespectImageOrientation);
return;
}
FloatRect tileRect(FloatPoint(), intrinsicTileSize);
drawPattern(ctxt, tileRect, scale, oneTileRect.location(), op, destRect, repeatSpacing);
startAnimation();
}
void Image::drawTiled(GraphicsContext& ctxt,
const FloatRect& destRect,
const FloatPoint& srcPoint,
const FloatSize& scaledTileSize,
SkBlendMode op,
const FloatSize& repeatSpacing) {
FloatSize intrinsicTileSize = FloatSize(size());
if (hasRelativeSize()) {
intrinsicTileSize.setWidth(scaledTileSize.width());
intrinsicTileSize.setHeight(scaledTileSize.height());
}
FloatSize scale(scaledTileSize.width() / intrinsicTileSize.width(),
scaledTileSize.height() / intrinsicTileSize.height());
const FloatRect oneTileRect = computeTileContaining(
destRect.location(), scaledTileSize, srcPoint, repeatSpacing);
// Check and see if a single draw of the image can cover the entire area we
// are supposed to tile.
if (oneTileRect.contains(destRect)) {
const FloatRect visibleSrcRect =
computeSubsetForTile(oneTileRect, destRect, intrinsicTileSize);
ctxt.drawImage(this, destRect, &visibleSrcRect, op,
DoNotRespectImageOrientation);
return;
}
FloatRect tileRect(FloatPoint(), intrinsicTileSize);
drawPattern(ctxt, tileRect, scale, oneTileRect.location(), op, destRect,
repeatSpacing);
startAnimation();
}
FloatSize Frame::resizePageRectsKeepingRatio(const FloatSize& originalSize, const FloatSize& expectedSize)
{
FloatSize resultSize;
if (!contentRenderer())
return FloatSize();
if (contentRenderer()->style()->isHorizontalWritingMode()) {
float ratio = originalSize.height() / originalSize.width();
resultSize.setWidth(floorf(expectedSize.width()));
resultSize.setHeight(floorf(resultSize.width() * ratio));
} else {
float ratio = originalSize.width() / originalSize.height();
resultSize.setHeight(floorf(expectedSize.height()));
resultSize.setWidth(floorf(resultSize.height() * ratio));
}
return resultSize;
}
// FIXME: Merge with the other drawTiled eventually, since we need a combination of both for some things.
void Image::drawTiled(GraphicsContext* ctxt, const FloatRect& dstRect, const FloatRect& srcRect,
const FloatSize& providedTileScaleFactor, TileRule hRule, TileRule vRule, CompositeOperator op)
{
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, dstRect, solidColor(), op);
return;
}
// FIXME: We do not support 'space' yet. For now just map it to 'repeat'.
if (hRule == SpaceTile)
hRule = RepeatTile;
if (vRule == SpaceTile)
vRule = RepeatTile;
// FIXME: if this code is used for background-repeat: round (in addition to
// border-image-repeat), then add logic to deal with the background-size: auto
// special case. The aspect ratio should be maintained in this case.
FloatSize tileScaleFactor = providedTileScaleFactor;
bool useLowInterpolationQuality = false;
if (hRule == RoundTile) {
float hRepetitions = std::max(1.0f, roundf(dstRect.width() / (tileScaleFactor.width() * srcRect.width())));
tileScaleFactor.setWidth(dstRect.width() / (srcRect.width() * hRepetitions));
}
if (vRule == RoundTile) {
float vRepetitions = std::max(1.0f, roundf(dstRect.height() / (tileScaleFactor.height() * srcRect.height())));
tileScaleFactor.setHeight(dstRect.height() / (srcRect.height() * vRepetitions));
}
if (hRule == RoundTile || vRule == RoundTile) {
// High interpolation quality rounds the scaled tile to an integer size (see Image::drawPattern).
// To avoid causing a visual problem, linear interpolation must be used instead.
// FIXME: Allow using high-quality interpolation in this case, too.
useLowInterpolationQuality = true;
}
// We want to construct the phase such that the pattern is centered (when stretch is not
// set for a particular rule).
float hPhase = tileScaleFactor.width() * srcRect.x();
float vPhase = tileScaleFactor.height() * srcRect.y();
float scaledTileWidth = tileScaleFactor.width() * srcRect.width();
float scaledTileHeight = tileScaleFactor.height() * srcRect.height();
if (hRule == Image::RepeatTile)
hPhase -= (dstRect.width() - scaledTileWidth) / 2;
if (vRule == Image::RepeatTile)
vPhase -= (dstRect.height() - scaledTileHeight) / 2;
FloatPoint patternPhase(dstRect.x() - hPhase, dstRect.y() - vPhase);
if (useLowInterpolationQuality) {
InterpolationQuality previousInterpolationQuality = ctxt->imageInterpolationQuality();
ctxt->setImageInterpolationQuality(InterpolationLow);
drawPattern(ctxt, srcRect, tileScaleFactor, patternPhase, op, dstRect);
ctxt->setImageInterpolationQuality(previousInterpolationQuality);
} else {
drawPattern(ctxt, srcRect, tileScaleFactor, patternPhase, op, dstRect);
}
startAnimation();
}
FloatSize LocalFrame::resizePageRectsKeepingRatio(const FloatSize& originalSize, const FloatSize& expectedSize)
{
FloatSize resultSize;
if (!contentRenderer())
return FloatSize();
if (contentRenderer()->style()->isHorizontalWritingMode()) {
ASSERT(fabs(originalSize.width()) > std::numeric_limits<float>::epsilon());
float ratio = originalSize.height() / originalSize.width();
resultSize.setWidth(floorf(expectedSize.width()));
resultSize.setHeight(floorf(resultSize.width() * ratio));
} else {
ASSERT(fabs(originalSize.height()) > std::numeric_limits<float>::epsilon());
float ratio = originalSize.width() / originalSize.height();
resultSize.setHeight(floorf(expectedSize.height()));
resultSize.setWidth(floorf(resultSize.height() * ratio));
}
return resultSize;
}
static inline void ensureRadiiDoNotOverlap(FloatRect &bounds, FloatSize &radii)
{
float widthRatio = bounds.width() / (2 * radii.width());
float heightRatio = bounds.height() / (2 * radii.height());
float reductionRatio = std::min<float>(widthRatio, heightRatio);
if (reductionRatio < 1) {
radii.setWidth(reductionRatio * radii.width());
radii.setHeight(reductionRatio * radii.height());
}
}
FloatSize MediaStreamPrivate::intrinsicSize() const
{
FloatSize size;
if (m_activeVideoTrack) {
const RealtimeMediaSourceStates& states = m_activeVideoTrack->source()->states();
size.setWidth(states.width());
size.setHeight(states.height());
}
return size;
}
FloatSize MediaStreamPrivate::intrinsicSize() const
{
FloatSize size;
if (m_activeVideoTrack) {
const RealtimeMediaSourceSettings& setting = m_activeVideoTrack->settings();
size.setWidth(setting.width());
size.setHeight(setting.height());
}
return size;
}
void RenderReplaced::computeAspectRatioInformationForRenderBox(RenderBox* contentRenderer, FloatSize& constrainedSize, double& intrinsicRatio, bool& isPercentageIntrinsicSize) const
{
FloatSize intrinsicSize;
if (contentRenderer) {
contentRenderer->computeIntrinsicRatioInformation(intrinsicSize, intrinsicRatio, isPercentageIntrinsicSize);
if (intrinsicRatio)
ASSERT(!isPercentageIntrinsicSize);
// Handle zoom & vertical writing modes here, as the embedded document doesn't know about them.
if (!isPercentageIntrinsicSize) {
intrinsicSize.scale(style().effectiveZoom());
if (isRenderImage())
intrinsicSize.scale(toRenderImage(this)->imageDevicePixelRatio());
}
if (hasAspectRatio() && isPercentageIntrinsicSize)
intrinsicRatio = 1;
// Update our intrinsic size to match what the content renderer has computed, so that when we
// constrain the size below, the correct intrinsic size will be obtained for comparison against
// min and max widths.
if (intrinsicRatio && !isPercentageIntrinsicSize && !intrinsicSize.isEmpty())
m_intrinsicSize = LayoutSize(intrinsicSize);
if (!isHorizontalWritingMode()) {
if (intrinsicRatio)
intrinsicRatio = 1 / intrinsicRatio;
intrinsicSize = intrinsicSize.transposedSize();
}
} else {
computeIntrinsicRatioInformation(intrinsicSize, intrinsicRatio, isPercentageIntrinsicSize);
if (intrinsicRatio) {
ASSERT(!isPercentageIntrinsicSize);
if (!intrinsicSize.isEmpty())
m_intrinsicSize = LayoutSize(isHorizontalWritingMode() ? intrinsicSize : intrinsicSize.transposedSize());
}
}
// Now constrain the intrinsic size along each axis according to minimum and maximum width/heights along the
// opposite axis. So for example a maximum width that shrinks our width will result in the height we compute here
// having to shrink in order to preserve the aspect ratio. Because we compute these values independently along
// each axis, the final returned size may in fact not preserve the aspect ratio.
// FIXME: In the long term, it might be better to just return this code more to the way it used to be before this
// function was added, since all it has done is make the code more unclear.
constrainedSize = intrinsicSize;
if (intrinsicRatio && !isPercentageIntrinsicSize && !intrinsicSize.isEmpty() && style().logicalWidth().isAuto() && style().logicalHeight().isAuto()) {
// We can't multiply or divide by 'intrinsicRatio' here, it breaks tests, like fast/images/zoomed-img-size.html, which
// can only be fixed once subpixel precision is available for things like intrinsicWidth/Height - which include zoom!
constrainedSize.setWidth(RenderBox::computeReplacedLogicalHeight() * intrinsicSize.width() / intrinsicSize.height());
constrainedSize.setHeight(RenderBox::computeReplacedLogicalWidth() * intrinsicSize.height() / intrinsicSize.width());
}
}
bool RenderSVGResourceFilter::fitsInMaximumImageSize(const FloatSize& size, FloatSize& scale)
{
bool matchesFilterSize = true;
if (size.width() > kMaxFilterSize) {
scale.setWidth(scale.width() * kMaxFilterSize / size.width());
matchesFilterSize = false;
}
if (size.height() > kMaxFilterSize) {
scale.setHeight(scale.height() * kMaxFilterSize / size.height());
matchesFilterSize = false;
}
return matchesFilterSize;
}
void RenderSVGRoot::computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio, bool& isPercentageIntrinsicSize) const
{
// Spec: http://www.w3.org/TR/SVG/coords.html#IntrinsicSizing
// SVG needs to specify how to calculate some intrinsic sizing properties to enable inclusion within other languages.
// The intrinsic width and height of the viewport of SVG content must be determined from the ‘width’ and ‘height’ attributes.
// If either of these are not specified, a value of '100%' must be assumed. Note: the ‘width’ and ‘height’ attributes are not
// the same as the CSS width and height properties. Specifically, percentage values do not provide an intrinsic width or height,
// and do not indicate a percentage of the containing block. Rather, once the viewport is established, they indicate the portion
// of the viewport that is actually covered by image data.
SVGSVGElement* svg = toSVGSVGElement(node());
ASSERT(svg);
Length intrinsicWidthAttribute = svg->intrinsicWidth(SVGSVGElement::IgnoreCSSProperties);
Length intrinsicHeightAttribute = svg->intrinsicHeight(SVGSVGElement::IgnoreCSSProperties);
// The intrinsic aspect ratio of the viewport of SVG content is necessary for example, when including SVG from an ‘object’
// element in HTML styled with CSS. It is possible (indeed, common) for an SVG graphic to have an intrinsic aspect ratio but
// not to have an intrinsic width or height. The intrinsic aspect ratio must be calculated based upon the following rules:
// - The aspect ratio is calculated by dividing a width by a height.
// - If the ‘width’ and ‘height’ of the rootmost ‘svg’ element are both specified with unit identifiers (in, mm, cm, pt, pc,
// px, em, ex) or in user units, then the aspect ratio is calculated from the ‘width’ and ‘height’ attributes after
// resolving both values to user units.
if (intrinsicWidthAttribute.isFixed() || intrinsicHeightAttribute.isFixed()) {
if (intrinsicWidthAttribute.isFixed())
intrinsicSize.setWidth(floatValueForLength(intrinsicWidthAttribute, 0));
if (intrinsicHeightAttribute.isFixed())
intrinsicSize.setHeight(floatValueForLength(intrinsicHeightAttribute, 0));
if (!intrinsicSize.isEmpty())
intrinsicRatio = intrinsicSize.width() / static_cast<double>(intrinsicSize.height());
return;
}
// - If either/both of the ‘width’ and ‘height’ of the rootmost ‘svg’ element are in percentage units (or omitted), the
// aspect ratio is calculated from the width and height values of the ‘viewBox’ specified for the current SVG document
// fragment. If the ‘viewBox’ is not correctly specified, or set to 'none', the intrinsic aspect ratio cannot be
// calculated and is considered unspecified.
intrinsicSize = svg->viewBox().size();
if (!intrinsicSize.isEmpty()) {
// The viewBox can only yield an intrinsic ratio, not an intrinsic size.
intrinsicRatio = intrinsicSize.width() / static_cast<double>(intrinsicSize.height());
intrinsicSize = FloatSize();
return;
}
// If our intrinsic size is in percentage units, return those to the caller through the intrinsicSize. Notify the caller
// about the special situation, by setting isPercentageIntrinsicSize=true, so it knows how to interpret the return values.
if (intrinsicWidthAttribute.isPercent() && intrinsicHeightAttribute.isPercent()) {
isPercentageIntrinsicSize = true;
intrinsicSize = FloatSize(intrinsicWidthAttribute.percent(), intrinsicHeightAttribute.percent());
}
}
void Image::drawTiled(GraphicsContext* ctxt, const FloatRect& destRect, const FloatPoint& srcPoint, const FloatSize& scaledTileSize, ColorSpace styleColorSpace, CompositeOperator op)
{
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, destRect, solidColor(), styleColorSpace, op);
return;
}
// See <https://webkit.org/b/59043>.
#if !PLATFORM(WX)
ASSERT(!isBitmapImage() || notSolidColor());
#endif
FloatSize intrinsicTileSize = size();
if (hasRelativeWidth())
intrinsicTileSize.setWidth(scaledTileSize.width());
if (hasRelativeHeight())
intrinsicTileSize.setHeight(scaledTileSize.height());
FloatSize scale(scaledTileSize.width() / intrinsicTileSize.width(),
scaledTileSize.height() / intrinsicTileSize.height());
FloatRect oneTileRect;
oneTileRect.setX(destRect.x() + fmodf(fmodf(-srcPoint.x(), scaledTileSize.width()) - scaledTileSize.width(), scaledTileSize.width()));
oneTileRect.setY(destRect.y() + fmodf(fmodf(-srcPoint.y(), scaledTileSize.height()) - scaledTileSize.height(), scaledTileSize.height()));
oneTileRect.setSize(scaledTileSize);
// Check and see if a single draw of the image can cover the entire area we are supposed to tile.
if (oneTileRect.contains(destRect)) {
FloatRect visibleSrcRect;
visibleSrcRect.setX((destRect.x() - oneTileRect.x()) / scale.width());
visibleSrcRect.setY((destRect.y() - oneTileRect.y()) / scale.height());
visibleSrcRect.setWidth(destRect.width() / scale.width());
visibleSrcRect.setHeight(destRect.height() / scale.height());
draw(ctxt, destRect, visibleSrcRect, styleColorSpace, op);
return;
}
AffineTransform patternTransform = AffineTransform().scaleNonUniform(scale.width(), scale.height());
FloatRect tileRect(FloatPoint(), intrinsicTileSize);
drawPattern(ctxt, tileRect, patternTransform, oneTileRect.location(), styleColorSpace, op, destRect);
startAnimation();
}
void RenderReplaced::computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio, bool& isPercentageIntrinsicSize) const
{
// If there's an embeddedContentBox() of a remote, referenced document available, this code-path should never be used.
ASSERT(!embeddedContentBox());
isPercentageIntrinsicSize = false;
intrinsicSize = FloatSize(intrinsicLogicalWidth(), intrinsicLogicalHeight());
// Figure out if we need to compute an intrinsic ratio.
if (intrinsicSize.isEmpty() || !rendererHasAspectRatio(this))
return;
intrinsicRatio = intrinsicSize.width() / intrinsicSize.height();
if (style()->logicalWidth().isAuto() && style()->logicalHeight().isAuto()) {
// We can't multiply or divide by 'intrinsicRatio' here, it breaks tests, like fast/images/zoomed-img-size.html, which
// can only be fixed once subpixel precision is available for things like intrinsicWidth/Height - which include zoom!
intrinsicSize.setWidth(RenderBox::computeReplacedLogicalHeight() * intrinsicLogicalWidth() / intrinsicLogicalHeight());
intrinsicSize.setHeight(RenderBox::computeReplacedLogicalWidth() * intrinsicLogicalHeight() / intrinsicLogicalWidth());
}
}
void RenderImage::computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio, bool& isPercentageIntrinsicSize) const
{
RenderReplaced::computeIntrinsicRatioInformation(intrinsicSize, intrinsicRatio, isPercentageIntrinsicSize);
// Our intrinsicSize is empty if we're rendering generated images with relative width/height. Figure out the right intrinsic size to use.
if (intrinsicSize.isEmpty() && (m_imageResource->imageHasRelativeWidth() || m_imageResource->imageHasRelativeHeight())) {
RenderObject* containingBlock = isOutOfFlowPositioned() ? container() : this->containingBlock();
if (containingBlock->isBox()) {
RenderBox* box = toRenderBox(containingBlock);
intrinsicSize.setWidth(box->availableLogicalWidth());
intrinsicSize.setHeight(box->availableLogicalHeight(IncludeMarginBorderPadding));
}
}
// Don't compute an intrinsic ratio to preserve historical WebKit behavior if we're painting alt text and/or a broken image.
if (m_imageResource && m_imageResource->errorOccurred()) {
intrinsicRatio = 1;
return;
}
}
IntSize SVGImage::containerSize() const
{
SVGSVGElement* rootElement = svgRootElement(m_page.get());
if (!rootElement)
return IntSize();
LayoutSVGRoot* layoutObject = toLayoutSVGRoot(rootElement->layoutObject());
if (!layoutObject)
return IntSize();
// If a container size is available it has precedence.
IntSize containerSize = layoutObject->containerSize();
if (!containerSize.isEmpty())
return containerSize;
// Assure that a container size is always given for a non-identity zoom level.
ASSERT(layoutObject->style()->effectiveZoom() == 1);
FloatSize intrinsicSize;
double intrinsicRatio = 0;
layoutObject->computeIntrinsicRatioInformation(intrinsicSize, intrinsicRatio);
if (intrinsicSize.isEmpty() && intrinsicRatio) {
if (!intrinsicSize.width() && intrinsicSize.height())
intrinsicSize.setWidth(intrinsicSize.height() * intrinsicRatio);
else if (intrinsicSize.width() && !intrinsicSize.height())
intrinsicSize.setHeight(intrinsicSize.width() / intrinsicRatio);
}
// TODO(davve): In order to maintain aspect ratio the intrinsic
// size is faked from the viewBox as a last resort. This may cause
// unwanted side effects. Preferably we should be able to signal
// the intrinsic ratio in another way.
if (intrinsicSize.isEmpty())
intrinsicSize = rootElement->currentViewBoxRect().size();
if (!intrinsicSize.isEmpty())
return expandedIntSize(intrinsicSize);
// As last resort, use CSS replaced element fallback size.
return IntSize(300, 150);
}
void LayoutImage::computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio) const
{
LayoutReplaced::computeIntrinsicRatioInformation(intrinsicSize, intrinsicRatio);
// Our intrinsicSize is empty if we're laying out generated images with relative width/height. Figure out the right intrinsic size to use.
if (intrinsicSize.isEmpty() && (m_imageResource->imageHasRelativeWidth() || m_imageResource->imageHasRelativeHeight())) {
LayoutObject* containingBlock = isOutOfFlowPositioned() ? container() : this->containingBlock();
if (containingBlock->isBox()) {
LayoutBox* box = toLayoutBox(containingBlock);
intrinsicSize.setWidth(box->availableLogicalWidth().toFloat());
intrinsicSize.setHeight(box->availableLogicalHeight(IncludeMarginBorderPadding).toFloat());
}
}
// Don't compute an intrinsic ratio to preserve historical WebKit behavior if we're painting alt text and/or a broken image.
// Video is excluded from this behavior because video elements have a default aspect ratio that a failed poster image load should not override.
if (m_imageResource && m_imageResource->errorOccurred() && !isVideo()) {
intrinsicRatio = 1;
return;
}
}
void Image::drawTiled(GraphicsContext* ctxt, const FloatRect& destRect, const FloatPoint& srcPoint, const FloatSize& scaledTileSize, CompositeOperator op, WebBlendMode blendMode, const IntSize& repeatSpacing)
{
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, destRect, solidColor(), op);
return;
}
// See <https://webkit.org/b/59043>.
ASSERT(!isBitmapImage() || notSolidColor());
FloatSize intrinsicTileSize = size();
if (hasRelativeWidth())
intrinsicTileSize.setWidth(scaledTileSize.width());
if (hasRelativeHeight())
intrinsicTileSize.setHeight(scaledTileSize.height());
FloatSize scale(scaledTileSize.width() / intrinsicTileSize.width(),
scaledTileSize.height() / intrinsicTileSize.height());
FloatSize actualTileSize(scaledTileSize.width() + repeatSpacing.width(), scaledTileSize.height() + repeatSpacing.height());
FloatRect oneTileRect;
oneTileRect.setX(destRect.x() + fmodf(fmodf(-srcPoint.x(), actualTileSize.width()) - actualTileSize.width(), actualTileSize.width()));
oneTileRect.setY(destRect.y() + fmodf(fmodf(-srcPoint.y(), actualTileSize.height()) - actualTileSize.height(), actualTileSize.height()));
oneTileRect.setSize(scaledTileSize);
// Check and see if a single draw of the image can cover the entire area we are supposed to tile.
if (oneTileRect.contains(destRect)) {
FloatRect visibleSrcRect;
visibleSrcRect.setX((destRect.x() - oneTileRect.x()) / scale.width());
visibleSrcRect.setY((destRect.y() - oneTileRect.y()) / scale.height());
visibleSrcRect.setWidth(destRect.width() / scale.width());
visibleSrcRect.setHeight(destRect.height() / scale.height());
draw(ctxt, destRect, visibleSrcRect, op, blendMode);
return;
}
FloatRect tileRect(FloatPoint(), intrinsicTileSize);
drawPattern(ctxt, tileRect, scale, oneTileRect.location(), op, destRect, blendMode, repeatSpacing);
startAnimation();
}
void Image::drawTiled(GraphicsContext* ctxt, const FloatRect& destRect, const FloatPoint& srcPoint, const FloatSize& scaledTileSize, ColorSpace styleColorSpace, CompositeOperator op, BlendMode blendMode)
{
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, destRect, solidColor(), styleColorSpace, op);
return;
}
ASSERT(!isBitmapImage() || notSolidColor());
FloatSize intrinsicTileSize = size();
if (hasRelativeWidth())
intrinsicTileSize.setWidth(scaledTileSize.width());
if (hasRelativeHeight())
intrinsicTileSize.setHeight(scaledTileSize.height());
FloatSize scale(scaledTileSize.width() / intrinsicTileSize.width(),
scaledTileSize.height() / intrinsicTileSize.height());
FloatRect oneTileRect;
FloatSize actualTileSize(scaledTileSize.width() + spaceSize().width(), scaledTileSize.height() + spaceSize().height());
oneTileRect.setX(destRect.x() + fmodf(fmodf(-srcPoint.x(), actualTileSize.width()) - actualTileSize.width(), actualTileSize.width()));
oneTileRect.setY(destRect.y() + fmodf(fmodf(-srcPoint.y(), actualTileSize.height()) - actualTileSize.height(), actualTileSize.height()));
oneTileRect.setSize(scaledTileSize);
// Check and see if a single draw of the image can cover the entire area we are supposed to tile.
if (oneTileRect.contains(destRect) && !ctxt->drawLuminanceMask()) {
FloatRect visibleSrcRect;
visibleSrcRect.setX((destRect.x() - oneTileRect.x()) / scale.width());
visibleSrcRect.setY((destRect.y() - oneTileRect.y()) / scale.height());
visibleSrcRect.setWidth(destRect.width() / scale.width());
visibleSrcRect.setHeight(destRect.height() / scale.height());
draw(ctxt, destRect, visibleSrcRect, styleColorSpace, op, blendMode, ImageOrientationDescription());
return;
}
AffineTransform patternTransform = AffineTransform().scaleNonUniform(scale.width(), scale.height());
FloatRect tileRect(FloatPoint(), intrinsicTileSize);
drawPattern(ctxt, tileRect, patternTransform, oneTileRect.location(), styleColorSpace, op, destRect, blendMode);
startAnimation();
}
void RenderReplaced::computeAspectRatioInformationForRenderBox(FloatSize& constrainedSize, double& intrinsicRatio) const
{
FloatSize intrinsicSize;
computeIntrinsicRatioInformation(intrinsicSize, intrinsicRatio);
if (intrinsicRatio && !intrinsicSize.isEmpty())
m_intrinsicSize = LayoutSize(intrinsicSize);
// Now constrain the intrinsic size along each axis according to minimum and maximum width/heights along the
// opposite axis. So for example a maximum width that shrinks our width will result in the height we compute here
// having to shrink in order to preserve the aspect ratio. Because we compute these values independently along
// each axis, the final returned size may in fact not preserve the aspect ratio.
// FIXME: In the long term, it might be better to just return this code more to the way it used to be before this
// function was added, since all it has done is make the code more unclear.
constrainedSize = intrinsicSize;
if (intrinsicRatio && !intrinsicSize.isEmpty() && style()->logicalWidth().isAuto() && style()->logicalHeight().isAuto()) {
// We can't multiply or divide by 'intrinsicRatio' here, it breaks tests, like fast/images/zoomed-img-size.html, which
// can only be fixed once subpixel precision is available for things like intrinsicWidth/Height.
constrainedSize.setWidth(RenderBox::computeReplacedLogicalHeight() * intrinsicSize.width() / intrinsicSize.height());
constrainedSize.setHeight(RenderBox::computeReplacedLogicalWidth() * intrinsicSize.height() / intrinsicSize.width());
}
}
void Image::drawTiled(GraphicsContext* ctxt, const FloatRect& destRect, const FloatPoint& srcPoint, const FloatSize& scaledTileSize, CompositeOperator op)
{
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, destRect, solidColor(), op);
return;
}
FloatSize intrinsicTileSize = size();
if (hasRelativeWidth())
intrinsicTileSize.setWidth(scaledTileSize.width());
if (hasRelativeHeight())
intrinsicTileSize.setHeight(scaledTileSize.height());
FloatSize scale(scaledTileSize.width() / intrinsicTileSize.width(),
scaledTileSize.height() / intrinsicTileSize.height());
AffineTransform patternTransform = AffineTransform().scale(scale.width(), scale.height());
FloatRect oneTileRect;
oneTileRect.setX(destRect.x() + fmodf(fmodf(-srcPoint.x(), scaledTileSize.width()) - scaledTileSize.width(), scaledTileSize.width()));
oneTileRect.setY(destRect.y() + fmodf(fmodf(-srcPoint.y(), scaledTileSize.height()) - scaledTileSize.height(), scaledTileSize.height()));
oneTileRect.setSize(scaledTileSize);
// Check and see if a single draw of the image can cover the entire area we are supposed to tile.
if (oneTileRect.contains(destRect)) {
FloatRect visibleSrcRect;
visibleSrcRect.setX((destRect.x() - oneTileRect.x()) / scale.width());
visibleSrcRect.setY((destRect.y() - oneTileRect.y()) / scale.height());
visibleSrcRect.setWidth(destRect.width() / scale.width());
visibleSrcRect.setHeight(destRect.height() / scale.height());
draw(ctxt, destRect, visibleSrcRect, op);
return;
}
FloatRect tileRect(FloatPoint(), intrinsicTileSize);
drawPatternCounter.startCounting();
drawPattern(ctxt, tileRect, patternTransform, oneTileRect.location(), op, destRect);
drawPatternCounter.stopCounting();
startAnimation();
}
void Gradient::adjustParametersForTiledDrawing(FloatSize& size, FloatRect& srcRect, const FloatSize& spacing)
{
if (m_radial)
return;
if (srcRect.isEmpty())
return;
if (!spacing.isZero())
return;
if (m_p0.x() == m_p1.x()) {
size.setWidth(1);
srcRect.setWidth(1);
srcRect.setX(0);
return;
}
if (m_p0.y() != m_p1.y())
return;
size.setHeight(1);
srcRect.setHeight(1);
srcRect.setY(0);
}
// TODO(cavalcantii): see crbug.com/662504.
void Image::drawTiled(GraphicsContext& ctxt,
const FloatRect& dstRect,
const FloatRect& srcRect,
const FloatSize& providedTileScaleFactor,
TileRule hRule,
TileRule vRule,
SkBlendMode op) {
// TODO(cavalcantii): see crbug.com/662513.
FloatSize tileScaleFactor = providedTileScaleFactor;
if (vRule == RoundTile) {
float vRepetitions =
std::max(1.0f, roundf(dstRect.height() /
(tileScaleFactor.height() * srcRect.height())));
tileScaleFactor.setHeight(dstRect.height() /
(srcRect.height() * vRepetitions));
}
if (hRule == RoundTile) {
float hRepetitions = std::max(
1.0f,
roundf(dstRect.width() / (tileScaleFactor.width() * srcRect.width())));
tileScaleFactor.setWidth(dstRect.width() /
(srcRect.width() * hRepetitions));
}
// We want to construct the phase such that the pattern is centered (when
// stretch is not set for a particular rule).
float vPhase = tileScaleFactor.height() * srcRect.y();
float hPhase = tileScaleFactor.width() * srcRect.x();
if (vRule == Image::RepeatTile) {
float scaledTileHeight = tileScaleFactor.height() * srcRect.height();
vPhase -= (dstRect.height() - scaledTileHeight) / 2;
}
if (hRule == Image::RepeatTile) {
float scaledTileWidth = tileScaleFactor.width() * srcRect.width();
hPhase -= (dstRect.width() - scaledTileWidth) / 2;
}
FloatSize spacing;
auto calculateSpaceNeeded = [](
const float destination, const float source) -> std::tuple<bool, float> {
DCHECK_GT(source, 0);
DCHECK_GT(destination, 0);
float repeatTilesCount = floorf(destination / source);
if (!repeatTilesCount)
return std::make_tuple(false, -1);
float space = destination;
space -= source * repeatTilesCount;
space /= repeatTilesCount + 1.0;
return std::make_tuple(true, space);
};
if (vRule == SpaceTile) {
std::tuple<bool, float> space =
calculateSpaceNeeded(dstRect.height(), srcRect.height());
if (!std::get<0>(space))
return;
spacing.setHeight(std::get<1>(space));
tileScaleFactor.setHeight(1.0);
vPhase = srcRect.y();
vPhase -= spacing.height();
}
if (hRule == SpaceTile) {
std::tuple<bool, float> space =
calculateSpaceNeeded(dstRect.width(), srcRect.width());
if (!std::get<0>(space))
return;
spacing.setWidth(std::get<1>(space));
tileScaleFactor.setWidth(1.0);
hPhase = srcRect.x();
hPhase -= spacing.width();
}
FloatPoint patternPhase(dstRect.x() - hPhase, dstRect.y() - vPhase);
// TODO(cavalcantii): see crbug.com/662507.
if ((hRule == RoundTile || vRule == RoundTile)) {
InterpolationQuality previousInterpolationQuality =
ctxt.imageInterpolationQuality();
ctxt.setImageInterpolationQuality(InterpolationLow);
drawPattern(ctxt, srcRect, tileScaleFactor, patternPhase, op, dstRect);
ctxt.setImageInterpolationQuality(previousInterpolationQuality);
} else {
drawPattern(ctxt, srcRect, tileScaleFactor, patternPhase, op, dstRect,
spacing);
}
startAnimation();
}
// FIXME: Merge with the other drawTiled eventually, since we need a combination of both for some things.
void Image::drawTiled(GraphicsContext& ctxt, const FloatRect& dstRect, const FloatRect& srcRect,
const FloatSize& tileScaleFactor, TileRule hRule, TileRule vRule, CompositeOperator op)
{
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, dstRect, solidColor(), op);
return;
}
FloatSize tileScale = tileScaleFactor;
FloatSize spacing;
// FIXME: These rules follow CSS border-image rules, but they should not be down here in Image.
bool centerOnGapHorizonally = false;
bool centerOnGapVertically = false;
switch (hRule) {
case RoundTile: {
int numItems = std::max<int>(floorf(dstRect.width() / srcRect.width()), 1);
tileScale.setWidth(dstRect.width() / (srcRect.width() * numItems));
break;
}
case SpaceTile: {
int numItems = floorf(dstRect.width() / srcRect.width());
if (!numItems)
return;
spacing.setWidth((dstRect.width() - srcRect.width() * numItems) / (numItems + 1));
tileScale.setWidth(1);
centerOnGapHorizonally = !(numItems & 1);
break;
}
case StretchTile:
case RepeatTile:
break;
}
switch (vRule) {
case RoundTile: {
int numItems = std::max<int>(floorf(dstRect.height() / srcRect.height()), 1);
tileScale.setHeight(dstRect.height() / (srcRect.height() * numItems));
break;
}
case SpaceTile: {
int numItems = floorf(dstRect.height() / srcRect.height());
if (!numItems)
return;
spacing.setHeight((dstRect.height() - srcRect.height() * numItems) / (numItems + 1));
tileScale.setHeight(1);
centerOnGapVertically = !(numItems & 1);
break;
}
case StretchTile:
case RepeatTile:
break;
}
AffineTransform patternTransform = AffineTransform().scaleNonUniform(tileScale.width(), tileScale.height());
// We want to construct the phase such that the pattern is centered (when stretch is not
// set for a particular rule).
float hPhase = tileScale.width() * srcRect.x();
float vPhase = tileScale.height() * srcRect.y();
float scaledTileWidth = tileScale.width() * srcRect.width();
float scaledTileHeight = tileScale.height() * srcRect.height();
if (centerOnGapHorizonally)
hPhase -= spacing.width();
else if (hRule == Image::RepeatTile || hRule == Image::SpaceTile)
hPhase -= (dstRect.width() - scaledTileWidth) / 2;
if (centerOnGapVertically)
vPhase -= spacing.height();
else if (vRule == Image::RepeatTile || vRule == Image::SpaceTile)
vPhase -= (dstRect.height() - scaledTileHeight) / 2;
FloatPoint patternPhase(dstRect.x() - hPhase, dstRect.y() - vPhase);
drawPattern(ctxt, srcRect, patternTransform, patternPhase, spacing, op, dstRect);
#if PLATFORM(IOS)
startAnimation(DoNotCatchUp);
#else
startAnimation();
#endif
}
void Image::drawTiled(GraphicsContext& ctxt, const FloatRect& destRect, const FloatPoint& srcPoint, const FloatSize& scaledTileSize, const FloatSize& spacing, CompositeOperator op, BlendMode blendMode)
{
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, destRect, solidColor(), op);
return;
}
ASSERT(!isBitmapImage() || notSolidColor());
#if PLATFORM(IOS)
FloatSize intrinsicTileSize = originalSize();
#else
FloatSize intrinsicTileSize = size();
#endif
if (hasRelativeWidth())
intrinsicTileSize.setWidth(scaledTileSize.width());
if (hasRelativeHeight())
intrinsicTileSize.setHeight(scaledTileSize.height());
FloatSize scale(scaledTileSize.width() / intrinsicTileSize.width(),
scaledTileSize.height() / intrinsicTileSize.height());
FloatRect oneTileRect;
FloatSize actualTileSize(scaledTileSize.width() + spacing.width(), scaledTileSize.height() + spacing.height());
oneTileRect.setX(destRect.x() + fmodf(fmodf(-srcPoint.x(), actualTileSize.width()) - actualTileSize.width(), actualTileSize.width()));
oneTileRect.setY(destRect.y() + fmodf(fmodf(-srcPoint.y(), actualTileSize.height()) - actualTileSize.height(), actualTileSize.height()));
oneTileRect.setSize(scaledTileSize);
// Check and see if a single draw of the image can cover the entire area we are supposed to tile.
if (oneTileRect.contains(destRect) && !ctxt.drawLuminanceMask()) {
FloatRect visibleSrcRect;
visibleSrcRect.setX((destRect.x() - oneTileRect.x()) / scale.width());
visibleSrcRect.setY((destRect.y() - oneTileRect.y()) / scale.height());
visibleSrcRect.setWidth(destRect.width() / scale.width());
visibleSrcRect.setHeight(destRect.height() / scale.height());
draw(ctxt, destRect, visibleSrcRect, op, blendMode, ImageOrientationDescription());
return;
}
#if PLATFORM(IOS)
// When using accelerated drawing on iOS, it's faster to stretch an image than to tile it.
if (ctxt.isAcceleratedContext()) {
if (size().width() == 1 && intersection(oneTileRect, destRect).height() == destRect.height()) {
FloatRect visibleSrcRect;
visibleSrcRect.setX(0);
visibleSrcRect.setY((destRect.y() - oneTileRect.y()) / scale.height());
visibleSrcRect.setWidth(1);
visibleSrcRect.setHeight(destRect.height() / scale.height());
draw(ctxt, destRect, visibleSrcRect, op, BlendModeNormal, ImageOrientationDescription());
return;
}
if (size().height() == 1 && intersection(oneTileRect, destRect).width() == destRect.width()) {
FloatRect visibleSrcRect;
visibleSrcRect.setX((destRect.x() - oneTileRect.x()) / scale.width());
visibleSrcRect.setY(0);
visibleSrcRect.setWidth(destRect.width() / scale.width());
visibleSrcRect.setHeight(1);
draw(ctxt, destRect, visibleSrcRect, op, BlendModeNormal, ImageOrientationDescription());
return;
}
}
#endif
// Patterned images and gradients can use lots of memory for caching when the
// tile size is large (<rdar://problem/4691859>, <rdar://problem/6239505>).
// Memory consumption depends on the transformed tile size which can get
// larger than the original tile if user zooms in enough.
#if PLATFORM(IOS)
const float maxPatternTilePixels = 512 * 512;
#else
const float maxPatternTilePixels = 2048 * 2048;
#endif
FloatRect transformedTileSize = ctxt.getCTM().mapRect(FloatRect(FloatPoint(), scaledTileSize));
float transformedTileSizePixels = transformedTileSize.width() * transformedTileSize.height();
FloatRect currentTileRect = oneTileRect;
if (transformedTileSizePixels > maxPatternTilePixels) {
GraphicsContextStateSaver stateSaver(ctxt);
ctxt.clip(destRect);
currentTileRect.shiftYEdgeTo(destRect.y());
float toY = currentTileRect.y();
while (toY < destRect.maxY()) {
currentTileRect.shiftXEdgeTo(destRect.x());
float toX = currentTileRect.x();
while (toX < destRect.maxX()) {
FloatRect toRect(toX, toY, currentTileRect.width(), currentTileRect.height());
FloatRect fromRect(toFloatPoint(currentTileRect.location() - oneTileRect.location()), currentTileRect.size());
fromRect.scale(1 / scale.width(), 1 / scale.height());
draw(ctxt, toRect, fromRect, op, BlendModeNormal, ImageOrientationDescription());
toX += currentTileRect.width();
currentTileRect.shiftXEdgeTo(oneTileRect.x());
}
toY += currentTileRect.height();
currentTileRect.shiftYEdgeTo(oneTileRect.y());
}
return;
}
AffineTransform patternTransform = AffineTransform().scaleNonUniform(scale.width(), scale.height());
FloatRect tileRect(FloatPoint(), intrinsicTileSize);
drawPattern(ctxt, tileRect, patternTransform, oneTileRect.location(), spacing, op, destRect, blendMode);
#if PLATFORM(IOS)
startAnimation(DoNotCatchUp);
#else
startAnimation();
#endif
}