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LibWeb: Add canvas.fill

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This implements only one of the two forms of this function,
ctx.fill(winding_rule).
Also tweaks the quadratic curve demo to have a nice looking filled
shape.
This commit is contained in:
AnotherTest 2020-05-06 11:56:47 +04:30 • committed by Andreas Kling
parent f54b41f748
commit a82419469f
5 changed files with 52 additions and 0 deletions
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28
Libraries/LibWeb/Bindings/CanvasRenderingContext2DWrapper.cpp
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@ -61,6 +61,7 @@ CanvasRenderingContext2DWrapper::CanvasRenderingContext2DWrapper(CanvasRendering
put_native_function("beginPath", begin_path, 0);
put_native_function("closePath", close_path, 0);
put_native_function("stroke", stroke, 0);
put_native_function("fill", fill, 0);
put_native_function("moveTo", move_to, 2);
put_native_function("lineTo", line_to, 2);
put_native_function("quadraticCurveTo", quadratic_curve_to, 4);
@ -219,6 +220,33 @@ JS::Value CanvasRenderingContext2DWrapper::stroke(JS::Interpreter& interpreter)
return JS::js_undefined();
}
JS::Value CanvasRenderingContext2DWrapper::fill(JS::Interpreter& interpreter)
{
auto* impl = impl_from(interpreter);
if (!impl)
return {};
auto winding = Gfx::Painter::WindingRule::Nonzero;
if (interpreter.argument_count() == 1) {
auto arg0 = interpreter.argument(0);
if (arg0.is_string()) {
const auto& winding_name = arg0.as_string().string();
if (winding_name == "evenodd") {
winding = Gfx::Painter::WindingRule::EvenOdd;
} else if (winding_name != "nonzero") {
return interpreter.throw_exception<JS::TypeError>("fill winding rule must be either 'nonzero' or 'evenodd'");
}
} else {
return interpreter.throw_exception<JS::TypeError>("fill called with non-string");
}
} else {
// FIXME: Path2D object
return JS::js_undefined();
}
impl->fill(winding);
return JS::js_undefined();
}
JS::Value CanvasRenderingContext2DWrapper::move_to(JS::Interpreter& interpreter)
{
auto* impl = impl_from(interpreter);