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LibWeb: Plumb svg stroking state to DisplayListPlayerSkia

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The state is still ignored there, so no behavior change, but this
should make it fairly easy to actually implement complete stroking
support for SVGs.
This commit is contained in:
Nico Weber 2024-11-21 15:09:31 -05:00 • committed by Jelle Raaijmakers
commit f4b0d17e4b
Notes: github-actions[bot] 2024-11-22 11:22:20 +00:00
7 changed files with 96 additions and 3 deletions
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43
Libraries/LibWeb/Painting/SVGPathPaintable.cpp
View file

@ -129,17 +129,51 @@ void SVGPathPaintable::paint(PaintContext& context, PaintPhase phase) const
});
}
auto stroke_linecap = graphics_element.stroke_linecap().value_or(CSS::StrokeLinecap::Butt);
(void)stroke_linecap; // FIXME: Use
Gfx::Path::CapStyle cap_style;
switch (graphics_element.stroke_linecap().value_or(CSS::InitialValues::stroke_linecap())) {
case CSS::StrokeLinecap::Butt:
cap_style = Gfx::Path::CapStyle::Butt;
break;
case CSS::StrokeLinecap::Round:
cap_style = Gfx::Path::CapStyle::Round;
break;
case CSS::StrokeLinecap::Square:
cap_style = Gfx::Path::CapStyle::Square;
break;
}
Gfx::Path::JoinStyle join_style;
switch (graphics_element.stroke_linejoin().value_or(CSS::InitialValues::stroke_linejoin())) {
case CSS::StrokeLinejoin::Miter:
join_style = Gfx::Path::JoinStyle::Miter;
break;
case CSS::StrokeLinejoin::Round:
join_style = Gfx::Path::JoinStyle::Round;
break;
case CSS::StrokeLinejoin::Bevel:
join_style = Gfx::Path::JoinStyle::Bevel;
break;
}
auto miter_limit = graphics_element.stroke_miterlimit().value_or(CSS::InitialValues::stroke_miterlimit()).resolved(layout_node());
auto stroke_opacity = graphics_element.stroke_opacity().value_or(1);
// Note: This is assuming .x_scale() == .y_scale() (which it does currently).
auto viewbox_scale = paint_transform.x_scale();
float stroke_thickness = graphics_element.stroke_width().value_or(1) * viewbox_scale;
auto stroke_dasharray = graphics_element.stroke_dasharray();
for (auto& value : stroke_dasharray)
value *= viewbox_scale;
float stroke_dashoffset = graphics_element.stroke_dashoffset().value_or(0) * viewbox_scale;
if (auto paint_style = graphics_element.stroke_paint_style(paint_context); paint_style.has_value()) {
context.display_list_recorder().stroke_path({
.cap_style = cap_style,
.join_style = join_style,
.miter_limit = static_cast<float>(miter_limit),
.dash_array = stroke_dasharray,
.dash_offset = stroke_dashoffset,
.path = path,
.paint_style = *paint_style,
.thickness = stroke_thickness,
@ -148,6 +182,11 @@ void SVGPathPaintable::paint(PaintContext& context, PaintPhase phase) const
});
} else if (auto stroke_color = graphics_element.stroke_color(); stroke_color.has_value()) {
context.display_list_recorder().stroke_path({
.cap_style = cap_style,
.join_style = join_style,
.miter_limit = static_cast<float>(miter_limit),
.dash_array = stroke_dasharray,
.dash_offset = stroke_dashoffset,
.path = path,
.color = stroke_color->with_opacity(stroke_opacity),
.thickness = stroke_thickness,