mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 15:40:19 +00:00
f87041bf3a
Resulting in a massive rename across almost everywhere! Alongside the namespace change, we now have the following names: * JS::NonnullGCPtr -> GC::Ref * JS::GCPtr -> GC::Ptr * JS::HeapFunction -> GC::Function * JS::CellImpl -> GC::Cell * JS::Handle -> GC::Root
269 lines
10 KiB
C++
269 lines
10 KiB
C++
/*
|
||
* Copyright (c) 2020, Matthew Olsson <matthewcolsson@gmail.com>
|
||
* Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
|
||
*
|
||
* SPDX-License-Identifier: BSD-2-Clause
|
||
*/
|
||
|
||
#include <LibWeb/Bindings/SVGSVGElementPrototype.h>
|
||
#include <LibWeb/CSS/Parser/Parser.h>
|
||
#include <LibWeb/CSS/StyleComputer.h>
|
||
#include <LibWeb/CSS/StyleValues/LengthStyleValue.h>
|
||
#include <LibWeb/CSS/StyleValues/PercentageStyleValue.h>
|
||
#include <LibWeb/DOM/Document.h>
|
||
#include <LibWeb/DOM/Event.h>
|
||
#include <LibWeb/DOM/StaticNodeList.h>
|
||
#include <LibWeb/HTML/Parser/HTMLParser.h>
|
||
#include <LibWeb/Layout/SVGSVGBox.h>
|
||
#include <LibWeb/SVG/AttributeNames.h>
|
||
#include <LibWeb/SVG/SVGAnimatedRect.h>
|
||
#include <LibWeb/SVG/SVGSVGElement.h>
|
||
#include <LibWeb/Selection/Selection.h>
|
||
|
||
namespace Web::SVG {
|
||
|
||
GC_DEFINE_ALLOCATOR(SVGSVGElement);
|
||
|
||
SVGSVGElement::SVGSVGElement(DOM::Document& document, DOM::QualifiedName qualified_name)
|
||
: SVGGraphicsElement(document, qualified_name)
|
||
{
|
||
}
|
||
|
||
void SVGSVGElement::initialize(JS::Realm& realm)
|
||
{
|
||
Base::initialize(realm);
|
||
WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGSVGElement);
|
||
m_view_box_for_bindings = realm.create<SVGAnimatedRect>(realm);
|
||
}
|
||
|
||
void SVGSVGElement::visit_edges(Visitor& visitor)
|
||
{
|
||
Base::visit_edges(visitor);
|
||
visitor.visit(m_view_box_for_bindings);
|
||
}
|
||
|
||
GC::Ptr<Layout::Node> SVGSVGElement::create_layout_node(CSS::StyleProperties style)
|
||
{
|
||
return heap().allocate<Layout::SVGSVGBox>(document(), *this, move(style));
|
||
}
|
||
|
||
RefPtr<CSS::CSSStyleValue> SVGSVGElement::width_style_value_from_attribute() const
|
||
{
|
||
auto parsing_context = CSS::Parser::ParsingContext { document(), CSS::Parser::ParsingContext::Mode::SVGPresentationAttribute };
|
||
auto width_attribute = attribute(SVG::AttributeNames::width);
|
||
if (auto width_value = parse_css_value(parsing_context, width_attribute.value_or(String {}), CSS::PropertyID::Width)) {
|
||
return width_value.release_nonnull();
|
||
}
|
||
if (width_attribute == "") {
|
||
// If the `width` attribute is an empty string, it defaults to 100%.
|
||
// This matches WebKit and Blink, but not Firefox. The spec is unclear.
|
||
// FIXME: Figure out what to do here.
|
||
return CSS::PercentageStyleValue::create(CSS::Percentage { 100 });
|
||
}
|
||
return nullptr;
|
||
}
|
||
|
||
RefPtr<CSS::CSSStyleValue> SVGSVGElement::height_style_value_from_attribute() const
|
||
{
|
||
auto parsing_context = CSS::Parser::ParsingContext { document(), CSS::Parser::ParsingContext::Mode::SVGPresentationAttribute };
|
||
auto height_attribute = attribute(SVG::AttributeNames::height);
|
||
if (auto height_value = parse_css_value(parsing_context, height_attribute.value_or(String {}), CSS::PropertyID::Height)) {
|
||
return height_value.release_nonnull();
|
||
}
|
||
if (height_attribute == "") {
|
||
// If the `height` attribute is an empty string, it defaults to 100%.
|
||
// This matches WebKit and Blink, but not Firefox. The spec is unclear.
|
||
// FIXME: Figure out what to do here.
|
||
return CSS::PercentageStyleValue::create(CSS::Percentage { 100 });
|
||
}
|
||
return nullptr;
|
||
}
|
||
|
||
void SVGSVGElement::apply_presentational_hints(CSS::StyleProperties& style) const
|
||
{
|
||
Base::apply_presentational_hints(style);
|
||
auto parsing_context = CSS::Parser::ParsingContext { document(), CSS::Parser::ParsingContext::Mode::SVGPresentationAttribute };
|
||
|
||
auto x_attribute = attribute(SVG::AttributeNames::x);
|
||
if (auto x_value = parse_css_value(parsing_context, x_attribute.value_or(String {}), CSS::PropertyID::X)) {
|
||
style.set_property(CSS::PropertyID::X, x_value.release_nonnull());
|
||
}
|
||
|
||
auto y_attribute = attribute(SVG::AttributeNames::y);
|
||
if (auto y_value = parse_css_value(parsing_context, y_attribute.value_or(String {}), CSS::PropertyID::Y)) {
|
||
style.set_property(CSS::PropertyID::Y, y_value.release_nonnull());
|
||
}
|
||
|
||
if (auto width = width_style_value_from_attribute())
|
||
style.set_property(CSS::PropertyID::Width, width.release_nonnull());
|
||
|
||
if (auto height = height_style_value_from_attribute())
|
||
style.set_property(CSS::PropertyID::Height, height.release_nonnull());
|
||
}
|
||
|
||
void SVGSVGElement::attribute_changed(FlyString const& name, Optional<String> const& old_value, Optional<String> const& value, Optional<FlyString> const& namespace_)
|
||
{
|
||
Base::attribute_changed(name, old_value, value, namespace_);
|
||
|
||
if (name.equals_ignoring_ascii_case(SVG::AttributeNames::viewBox)) {
|
||
if (!value.has_value()) {
|
||
m_view_box_for_bindings->set_nulled(true);
|
||
} else {
|
||
m_view_box = try_parse_view_box(value.value_or(String {}));
|
||
m_view_box_for_bindings->set_nulled(!m_view_box.has_value());
|
||
if (m_view_box.has_value()) {
|
||
m_view_box_for_bindings->set_base_val(Gfx::DoubleRect { m_view_box->min_x, m_view_box->min_y, m_view_box->width, m_view_box->height });
|
||
m_view_box_for_bindings->set_anim_val(Gfx::DoubleRect { m_view_box->min_x, m_view_box->min_y, m_view_box->width, m_view_box->height });
|
||
}
|
||
}
|
||
}
|
||
if (name.equals_ignoring_ascii_case(SVG::AttributeNames::preserveAspectRatio))
|
||
m_preserve_aspect_ratio = AttributeParser::parse_preserve_aspect_ratio(value.value_or(String {}));
|
||
if (name.equals_ignoring_ascii_case(SVG::AttributeNames::width) || name.equals_ignoring_ascii_case(SVG::AttributeNames::height))
|
||
update_fallback_view_box_for_svg_as_image();
|
||
}
|
||
|
||
void SVGSVGElement::update_fallback_view_box_for_svg_as_image()
|
||
{
|
||
// AD-HOC: This creates a fallback viewBox for SVGs used as images.
|
||
// If the <svg> element has width and height, but no viewBox,
|
||
// we fall back to a synthetic viewBox="0 0 width height".
|
||
|
||
Optional<double> width;
|
||
Optional<double> height;
|
||
|
||
auto width_attribute = get_attribute_value(SVG::AttributeNames::width);
|
||
auto parsing_context = CSS::Parser::ParsingContext { document() };
|
||
if (auto width_value = parse_css_value(parsing_context, width_attribute, CSS::PropertyID::Width)) {
|
||
if (width_value->is_length() && width_value->as_length().length().is_absolute())
|
||
width = width_value->as_length().length().absolute_length_to_px().to_double();
|
||
}
|
||
|
||
auto height_attribute = get_attribute_value(SVG::AttributeNames::height);
|
||
if (auto height_value = parse_css_value(parsing_context, height_attribute, CSS::PropertyID::Height)) {
|
||
if (height_value->is_length() && height_value->as_length().length().is_absolute())
|
||
height = height_value->as_length().length().absolute_length_to_px().to_double();
|
||
}
|
||
|
||
if (width.has_value() && width.value() > 0 && height.has_value() && height.value() > 0) {
|
||
m_fallback_view_box_for_svg_as_image = ViewBox { 0, 0, width.value(), height.value() };
|
||
} else {
|
||
m_fallback_view_box_for_svg_as_image = {};
|
||
}
|
||
}
|
||
|
||
void SVGSVGElement::set_fallback_view_box_for_svg_as_image(Optional<ViewBox> view_box)
|
||
{
|
||
m_fallback_view_box_for_svg_as_image = view_box;
|
||
}
|
||
|
||
Optional<ViewBox> SVGSVGElement::view_box() const
|
||
{
|
||
if (m_view_box.has_value())
|
||
return m_view_box;
|
||
|
||
// NOTE: If the parent is a document, we're an <svg> element used as an image.
|
||
if (parent() && parent()->is_document() && m_fallback_view_box_for_svg_as_image.has_value())
|
||
return m_fallback_view_box_for_svg_as_image;
|
||
|
||
return {};
|
||
}
|
||
|
||
GC::Ref<SVGAnimatedLength> SVGSVGElement::x() const
|
||
{
|
||
return svg_animated_length_for_property(CSS::PropertyID::X);
|
||
}
|
||
|
||
GC::Ref<SVGAnimatedLength> SVGSVGElement::y() const
|
||
{
|
||
return svg_animated_length_for_property(CSS::PropertyID::Y);
|
||
}
|
||
|
||
GC::Ref<SVGAnimatedLength> SVGSVGElement::width() const
|
||
{
|
||
return svg_animated_length_for_property(CSS::PropertyID::Width);
|
||
}
|
||
|
||
GC::Ref<SVGAnimatedLength> SVGSVGElement::height() const
|
||
{
|
||
return svg_animated_length_for_property(CSS::PropertyID::Height);
|
||
}
|
||
|
||
float SVGSVGElement::current_scale() const
|
||
{
|
||
dbgln("(STUBBED) SVGSVGElement::current_scale(). Called on: {}", debug_description());
|
||
return 1.0f;
|
||
}
|
||
|
||
void SVGSVGElement::set_current_scale(float)
|
||
{
|
||
dbgln("(STUBBED) SVGSVGElement::set_current_scale(). Called on: {}", debug_description());
|
||
}
|
||
|
||
GC::Ref<Geometry::DOMPointReadOnly> SVGSVGElement::current_translate() const
|
||
{
|
||
dbgln("(STUBBED) SVGSVGElement::current_translate(). Called on: {}", debug_description());
|
||
return Geometry::DOMPointReadOnly::create(realm());
|
||
}
|
||
|
||
GC::Ref<DOM::NodeList> SVGSVGElement::get_intersection_list(GC::Ref<Geometry::DOMRectReadOnly>, GC::Ptr<SVGElement>) const
|
||
{
|
||
dbgln("(STUBBED) SVGSVGElement::get_intersection_list(). Called on: {}", debug_description());
|
||
return DOM::StaticNodeList::create(realm(), {});
|
||
}
|
||
|
||
GC::Ref<DOM::NodeList> SVGSVGElement::get_enclosure_list(GC::Ref<Geometry::DOMRectReadOnly>, GC::Ptr<SVGElement>) const
|
||
{
|
||
dbgln("(STUBBED) SVGSVGElement::get_enclosure_list(). Called on: {}", debug_description());
|
||
return DOM::StaticNodeList::create(realm(), {});
|
||
}
|
||
|
||
bool SVGSVGElement::check_intersection(GC::Ref<SVGElement>, GC::Ref<Geometry::DOMRectReadOnly>) const
|
||
{
|
||
dbgln("(STUBBED) SVGSVGElement::check_intersection(). Called on: {}", debug_description());
|
||
return false;
|
||
}
|
||
|
||
bool SVGSVGElement::check_enclosure(GC::Ref<SVGElement>, GC::Ref<Geometry::DOMRectReadOnly>) const
|
||
{
|
||
dbgln("(STUBBED) SVGSVGElement::check_enclosure(). Called on: {}", debug_description());
|
||
return false;
|
||
}
|
||
|
||
void SVGSVGElement::deselect_all() const
|
||
{
|
||
// This is equivalent to calling document.getSelection().removeAllRanges() on the document that this ‘svg’ element is in.
|
||
if (auto selection = document().get_selection())
|
||
selection->remove_all_ranges();
|
||
}
|
||
|
||
GC::Ref<SVGLength> SVGSVGElement::create_svg_length() const
|
||
{
|
||
// A new, detached SVGLength object whose value is the unitless <number> 0.
|
||
return SVGLength::create(realm(), SVGLength::SVG_LENGTHTYPE_NUMBER, 0);
|
||
}
|
||
|
||
GC::Ref<Geometry::DOMPoint> SVGSVGElement::create_svg_point() const
|
||
{
|
||
// A new, detached DOMPoint object whose coordinates are all 0.
|
||
return Geometry::DOMPoint::from_point(vm(), Geometry::DOMPointInit {});
|
||
}
|
||
|
||
GC::Ref<Geometry::DOMMatrix> SVGSVGElement::create_svg_matrix() const
|
||
{
|
||
// A new, detached DOMMatrix object representing the identity matrix.
|
||
return Geometry::DOMMatrix::create(realm());
|
||
}
|
||
|
||
GC::Ref<Geometry::DOMRect> SVGSVGElement::create_svg_rect() const
|
||
{
|
||
// A new, DOMRect object whose x, y, width and height are all 0.
|
||
return Geometry::DOMRect::construct_impl(realm(), 0, 0, 0, 0).release_value_but_fixme_should_propagate_errors();
|
||
}
|
||
|
||
GC::Ref<SVGTransform> SVGSVGElement::create_svg_transform() const
|
||
{
|
||
return SVGTransform::create(realm());
|
||
}
|
||
|
||
}
|