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LibWeb+LibGfx: Paint line_cap, line_join for Canvas Strokes

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This commit is contained in:
Mehran Kamal 2025-03-14 22:28:53 +05:00 • committed by Alexander Kalenik
commit bb87de58a0
Notes: github-actions[bot] 2025-03-15 13:03:28 +00:00
7 changed files with 209 additions and 2 deletions
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33
Libraries/LibWeb/HTML/CanvasRenderingContext2D.cpp
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@ -292,6 +292,33 @@ void CanvasRenderingContext2D::begin_path()
path().clear();
}
static Gfx::Path::CapStyle to_gfx_cap(Bindings::CanvasLineCap const& cap_style)
{
switch (cap_style) {
case Bindings::CanvasLineCap::Butt:
return Gfx::Path::CapStyle::Butt;
case Bindings::CanvasLineCap::Round:
return Gfx::Path::CapStyle::Round;
case Bindings::CanvasLineCap::Square:
return Gfx::Path::CapStyle::Square;
}
VERIFY_NOT_REACHED();
}
static Gfx::Path::JoinStyle to_gfx_join(Bindings::CanvasLineJoin const& join_style)
{
switch (join_style) {
case Bindings::CanvasLineJoin::Round:
return Gfx::Path::JoinStyle::Round;
case Bindings::CanvasLineJoin::Bevel:
return Gfx::Path::JoinStyle::Bevel;
case Bindings::CanvasLineJoin::Miter:
return Gfx::Path::JoinStyle::Miter;
}
VERIFY_NOT_REACHED();
}
void CanvasRenderingContext2D::stroke_internal(Gfx::Path const& path)
{
auto* painter = this->painter();
@ -302,8 +329,10 @@ void CanvasRenderingContext2D::stroke_internal(Gfx::Path const& path)
auto& state = drawing_state();
// FIXME: Honor state's line_cap, line_join, miter_limit, dash_list, and line_dash_offset.
painter->stroke_path(path, state.stroke_style.to_gfx_paint_style(), state.filters, state.line_width, state.global_alpha, state.current_compositing_and_blending_operator);
// FIXME: Honor state's miter_limit, dash_list, and line_dash_offset.
auto line_cap = to_gfx_cap(state.line_cap);
auto line_join = to_gfx_join(state.line_join);
painter->stroke_path(path, state.stroke_style.to_gfx_paint_style(), state.filters, state.line_width, state.global_alpha, state.current_compositing_and_blending_operator, line_cap, line_join);
did_draw(path.bounding_box());
}