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LibWeb: Fix parsing bug for SVG attributes

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This doesn't seem to actually have fixed any bugs, as having
FillOpacity instead of StrokeOpacity in the call to parse_css_value
doesn't seem to have actually been causing bugs. But, I still think it's
worthwhile correcting.

The reason that it wasn't causing bugs is that having FillOpacity
instead of StrokeOpacity in the call to parse_css_value means that when
parsing the value is compared to the acceptable values for that property
(for example the value can only be a percentage, or a number, etc.). In
this case both FillOpacity and StrokeOpacity seem to accept the same
values.
This commit is contained in:
martinfalisse 2023-08-16 17:47:52 +02:00 • committed by Andreas Kling
parent f2047a5c32
commit 70919dbed7
3 changed files with 30 additions and 3 deletions
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16
Tests/LibWeb/Layout/expected/svg/svg-different-types-of-opacity.txt Normal file
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@ -0,0 +1,16 @@
Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (0,0) content-size 800x800 [BFC] children: not-inline
BlockContainer <body> at (8,8) content-size 784x784 children: inline
line 0 width: 784, height: 784, bottom: 784, baseline: 784
frag 0 from SVGSVGBox start: 0, length: 0, rect: [8,8 784x784]
SVGSVGBox <svg> at (8,8) content-size 784x784 [SVG] children: inline
TextNode <#text>
SVGGeometryBox <circle> at (47.203125,47.203125) content-size 548.796875x548.796875 children: not-inline
TextNode <#text>
TextNode <#text>
PaintableWithLines (Viewport<#document>) [0,0 800x600] overflow: [0,0 800x800]
PaintableWithLines (BlockContainer<HTML>) [0,0 800x800]
PaintableWithLines (BlockContainer<BODY>) [8,8 784x784]
SVGSVGPaintable (SVGSVGBox<svg>) [8,8 784x784]
SVGGeometryPaintable (SVGGeometryBox<circle>) [47.203125,47.203125 548.796875x548.796875]

11
Tests/LibWeb/Layout/input/svg/svg-different-types-of-opacity.html Normal file
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@ -0,0 +1,11 @@
<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<circle
cx="40"
cy="40"
r="25"
stroke-opacity="50%"
fill-opacity="20%"
stroke="green"
opacity="90%"
stroke-width="20" />
</svg>
Side by side

After

Width:  |  Height:  |  Size: 225 B

6
Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
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@ -141,11 +141,11 @@ void SVGGraphicsElement::apply_presentational_hints(CSS::StyleProperties& style)
if (auto fill_opacity_value = parse_css_value(parsing_context, value, CSS::PropertyID::FillOpacity).release_value_but_fixme_should_propagate_errors())
style.set_property(CSS::PropertyID::FillOpacity, fill_opacity_value.release_nonnull());
} else if (name.equals_ignoring_ascii_case("stroke-opacity"sv)) {
if (auto stroke_opacity_value = parse_css_value(parsing_context, value, CSS::PropertyID::FillOpacity).release_value_but_fixme_should_propagate_errors())
if (auto stroke_opacity_value = parse_css_value(parsing_context, value, CSS::PropertyID::StrokeOpacity).release_value_but_fixme_should_propagate_errors())
style.set_property(CSS::PropertyID::StrokeOpacity, stroke_opacity_value.release_nonnull());
} else if (name.equals_ignoring_ascii_case(SVG::AttributeNames::opacity)) {
if (auto stroke_opacity_value = parse_css_value(parsing_context, value, CSS::PropertyID::Opacity).release_value_but_fixme_should_propagate_errors())
style.set_property(CSS::PropertyID::Opacity, stroke_opacity_value.release_nonnull());
if (auto opacity_value = parse_css_value(parsing_context, value, CSS::PropertyID::Opacity).release_value_but_fixme_should_propagate_errors())
style.set_property(CSS::PropertyID::Opacity, opacity_value.release_nonnull());
} else if (name.equals_ignoring_ascii_case("text-anchor"sv)) {
if (auto text_anchor_value = parse_css_value(parsing_context, value, CSS::PropertyID::TextAnchor).release_value_but_fixme_should_propagate_errors())
style.set_property(CSS::PropertyID::TextAnchor, text_anchor_value.release_nonnull());