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issue #908 - implement missing parts of CSS mask

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yami 2018-12-16 16:17:20 +01:00 • committed by Roy Tam
commit b5376e63c5
28 changed files with 574 additions and 449 deletions
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116
layout/svg/nsCSSClipPathInstance.cpp
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@ -62,122 +62,12 @@ nsCSSClipPathInstance::HitTestBasicShapeClip(nsIFrame* aFrame,
return path->ContainsPoint(ToPoint(aPoint) * pixelRatio, Matrix());
}
nsRect
nsCSSClipPathInstance::ComputeSVGReferenceRect()
{
MOZ_ASSERT(mTargetFrame->GetContent()->IsSVGElement());
nsRect r;
// For SVG elements without associated CSS layout box, the used value for
// content-box, padding-box, border-box and margin-box is fill-box.
switch (mClipPathStyle.GetReferenceBox()) {
case StyleClipPathGeometryBox::Stroke: {
// XXX Bug 1299876
// The size of srtoke-box is not correct if this graphic element has
// specific stroke-linejoin or stroke-linecap.
gfxRect bbox = nsSVGUtils::GetBBox(mTargetFrame,
nsSVGUtils::eBBoxIncludeFill | nsSVGUtils::eBBoxIncludeStroke);
r = nsLayoutUtils::RoundGfxRectToAppRect(bbox,
nsPresContext::AppUnitsPerCSSPixel());
break;
}
case StyleClipPathGeometryBox::View: {
nsIContent* content = mTargetFrame->GetContent();
nsSVGElement* element = static_cast<nsSVGElement*>(content);
SVGSVGElement* svgElement = element->GetCtx();
MOZ_ASSERT(svgElement);
if (svgElement && svgElement->HasViewBoxRect()) {
// If a ‘viewBox‘ attribute is specified for the SVG viewport creating
// element:
// 1. The reference box is positioned at the origin of the coordinate
// system established by the ‘viewBox‘ attribute.
// 2. The dimension of the reference box is set to the width and height
// values of the ‘viewBox‘ attribute.
nsSVGViewBox* viewBox = svgElement->GetViewBox();
const nsSVGViewBoxRect& value = viewBox->GetAnimValue();
r = nsRect(nsPresContext::CSSPixelsToAppUnits(value.x),
nsPresContext::CSSPixelsToAppUnits(value.y),
nsPresContext::CSSPixelsToAppUnits(value.width),
nsPresContext::CSSPixelsToAppUnits(value.height));
} else {
// No viewBox is specified, uses the nearest SVG viewport as reference
// box.
svgFloatSize viewportSize = svgElement->GetViewportSize();
r = nsRect(0, 0,
nsPresContext::CSSPixelsToAppUnits(viewportSize.width),
nsPresContext::CSSPixelsToAppUnits(viewportSize.height));
}
break;
}
case StyleClipPathGeometryBox::NoBox:
case StyleClipPathGeometryBox::Border:
case StyleClipPathGeometryBox::Content:
case StyleClipPathGeometryBox::Padding:
case StyleClipPathGeometryBox::Margin:
case StyleClipPathGeometryBox::Fill: {
gfxRect bbox = nsSVGUtils::GetBBox(mTargetFrame,
nsSVGUtils::eBBoxIncludeFill);
r = nsLayoutUtils::RoundGfxRectToAppRect(bbox,
nsPresContext::AppUnitsPerCSSPixel());
break;
}
default:{
MOZ_ASSERT_UNREACHABLE("unknown StyleClipPathGeometryBox type");
gfxRect bbox = nsSVGUtils::GetBBox(mTargetFrame,
nsSVGUtils::eBBoxIncludeFill);
r = nsLayoutUtils::RoundGfxRectToAppRect(bbox,
nsPresContext::AppUnitsPerCSSPixel());
break;
}
}
return r;
}
nsRect
nsCSSClipPathInstance::ComputeHTMLReferenceRect()
{
nsRect r;
// For elements with associated CSS layout box, the used value for fill-box,
// stroke-box and view-box is border-box.
switch (mClipPathStyle.GetReferenceBox()) {
case StyleClipPathGeometryBox::Content:
r = mTargetFrame->GetContentRectRelativeToSelf();
break;
case StyleClipPathGeometryBox::Padding:
r = mTargetFrame->GetPaddingRectRelativeToSelf();
break;
case StyleClipPathGeometryBox::Margin:
r = mTargetFrame->GetMarginRectRelativeToSelf();
break;
case StyleClipPathGeometryBox::NoBox:
case StyleClipPathGeometryBox::Border:
case StyleClipPathGeometryBox::Fill:
case StyleClipPathGeometryBox::Stroke:
case StyleClipPathGeometryBox::View:
r = mTargetFrame->GetRectRelativeToSelf();
break;
default:
MOZ_ASSERT_UNREACHABLE("unknown StyleClipPathGeometryBox type");
r = mTargetFrame->GetRectRelativeToSelf();
break;
}
return r;
}
already_AddRefed<Path>
nsCSSClipPathInstance::CreateClipPath(DrawTarget* aDrawTarget)
{
// We use ComputeSVGReferenceRect for all SVG elements, except <svg>
// element, which does have an associated CSS layout box. In this case we
// should still use ComputeHTMLReferenceRect for region computing.
nsRect r = mTargetFrame->IsFrameOfType(nsIFrame::eSVG) &&
(mTargetFrame->GetType() != nsGkAtoms::svgOuterSVGFrame)
? ComputeSVGReferenceRect() : ComputeHTMLReferenceRect();
nsRect r =
nsLayoutUtils::ComputeGeometryBox(mTargetFrame,
mClipPathStyle.GetReferenceBox());
if (mClipPathStyle.GetType() != StyleShapeSourceType::Shape) {
// TODO Clip to border-radius/reference box if no shape