mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-26 17:55:07 +02:00
babfd70ca7
This ensures that we are explicitly declaring the allocator to use when allocating a cell(-inheriting) type, instead of silently falling back to size-based allocation. Since this is done in allocate_cell, this will only be detected for types that are actively being allocated. However, since that means they're _not_ being allocated, that means it's safe to not declare an allocator to use for those. For example, the base TypedArray<T>, which is never directly allocated and only the defined specializations are ever allocated.
297 lines
10 KiB
C++
297 lines
10 KiB
C++
/*
|
||
* Copyright (c) 2024-2025, Tim Ledbetter <tim.ledbetter@ladybird.org>
|
||
*
|
||
* SPDX-License-Identifier: BSD-2-Clause
|
||
*/
|
||
|
||
#include "SVGImageElement.h"
|
||
#include <LibCore/Timer.h>
|
||
#include <LibGC/Heap.h>
|
||
#include <LibGfx/ImmutableBitmap.h>
|
||
#include <LibWeb/Bindings/SVGImageElementPrototype.h>
|
||
#include <LibWeb/DOM/DocumentObserver.h>
|
||
#include <LibWeb/DOM/Event.h>
|
||
#include <LibWeb/HTML/PotentialCORSRequest.h>
|
||
#include <LibWeb/HTML/SharedResourceRequest.h>
|
||
#include <LibWeb/Layout/SVGImageBox.h>
|
||
#include <LibWeb/Namespace.h>
|
||
#include <LibWeb/Painting/Paintable.h>
|
||
#include <LibWeb/SVG/SVGDecodedImageData.h>
|
||
|
||
namespace Web::SVG {
|
||
|
||
GC_DEFINE_ALLOCATOR(SVGImageElement);
|
||
|
||
SVGImageElement::SVGImageElement(DOM::Document& document, DOM::QualifiedName qualified_name)
|
||
: SVGGraphicsElement(document, move(qualified_name))
|
||
{
|
||
m_animation_timer = Core::Timer::create();
|
||
m_animation_timer->on_timeout = [this] { animate(); };
|
||
}
|
||
|
||
SVGImageElement::~SVGImageElement() = default;
|
||
|
||
void SVGImageElement::initialize(JS::Realm& realm)
|
||
{
|
||
WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGImageElement);
|
||
Base::initialize(realm);
|
||
}
|
||
|
||
void SVGImageElement::visit_edges(Cell::Visitor& visitor)
|
||
{
|
||
Base::visit_edges(visitor);
|
||
image_provider_visit_edges(visitor);
|
||
SVGURIReferenceMixin::visit_edges(visitor);
|
||
visitor.visit(m_x);
|
||
visitor.visit(m_y);
|
||
visitor.visit(m_width);
|
||
visitor.visit(m_height);
|
||
visitor.visit(m_resource_request);
|
||
}
|
||
|
||
void SVGImageElement::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 == SVG::AttributeNames::x) {
|
||
auto parsed_value = AttributeParser::parse_coordinate(value.value_or(String {}));
|
||
MUST(x()->base_val()->set_value(parsed_value.value_or(0)));
|
||
} else if (name == SVG::AttributeNames::y) {
|
||
auto parsed_value = AttributeParser::parse_coordinate(value.value_or(String {}));
|
||
MUST(y()->base_val()->set_value(parsed_value.value_or(0)));
|
||
} else if (name == SVG::AttributeNames::width) {
|
||
auto parsed_value = AttributeParser::parse_coordinate(value.value_or(String {}));
|
||
MUST(width()->base_val()->set_value(parsed_value.value_or(0)));
|
||
} else if (name == SVG::AttributeNames::height) {
|
||
auto parsed_value = AttributeParser::parse_coordinate(value.value_or(String {}));
|
||
MUST(height()->base_val()->set_value(parsed_value.value_or(0)));
|
||
} else if (name == SVG::AttributeNames::href) {
|
||
// https://svgwg.org/svg2-draft/linking.html#XLinkRefAttrs
|
||
// For backwards compatibility, elements with an ‘href’ attribute also recognize an ‘href’ attribute in the
|
||
// XLink namespace. If the element is in the XLink namespace, it does not recognize an ‘href’ attribute in the
|
||
// SVG namespace. When the ‘href’ attribute is present in both the XLink namespace and without a namespace, the
|
||
// value of the attribute without a namespace shall be used. The attribute in the XLink namespace shall be ignored.
|
||
if (namespace_ == Namespace::XLink && has_attribute_ns({}, name))
|
||
return;
|
||
|
||
auto href = value;
|
||
if (!namespace_.has_value() && !href.has_value())
|
||
href = get_attribute_ns(SVG::AttributeNames::href, Namespace::XLink);
|
||
|
||
process_the_url(href);
|
||
}
|
||
}
|
||
|
||
// https://svgwg.org/svg2-draft/embedded.html#__svg__SVGImageElement__x
|
||
GC::Ref<SVG::SVGAnimatedLength> SVGImageElement::x()
|
||
{
|
||
if (!m_x)
|
||
m_x = fake_animated_length_fixme();
|
||
|
||
return *m_x;
|
||
}
|
||
|
||
// https://svgwg.org/svg2-draft/embedded.html#__svg__SVGImageElement__y
|
||
GC::Ref<SVG::SVGAnimatedLength> SVGImageElement::y()
|
||
{
|
||
if (!m_y)
|
||
m_y = fake_animated_length_fixme();
|
||
|
||
return *m_y;
|
||
}
|
||
|
||
// https://svgwg.org/svg2-draft/embedded.html#__svg__SVGImageElement__width
|
||
GC::Ref<SVG::SVGAnimatedLength> SVGImageElement::width()
|
||
{
|
||
if (!m_width) {
|
||
auto& realm = this->realm();
|
||
m_width = SVGAnimatedLength::create(
|
||
realm,
|
||
SVGLength::create(realm, 0, intrinsic_width().value_or(0).to_double(), SVGLength::ReadOnly::No),
|
||
SVGLength::create(realm, 0, 0, SVGLength::ReadOnly::Yes));
|
||
}
|
||
|
||
return *m_width;
|
||
}
|
||
|
||
// https://svgwg.org/svg2-draft/embedded.html#__svg__SVGImageElement__height
|
||
GC::Ref<SVG::SVGAnimatedLength> SVGImageElement::height()
|
||
{
|
||
if (!m_height) {
|
||
auto& realm = this->realm();
|
||
m_height = SVGAnimatedLength::create(
|
||
realm,
|
||
SVGLength::create(realm, 0, intrinsic_height().value_or(0).to_double(), SVGLength::ReadOnly::No),
|
||
SVGLength::create(realm, 0, 0, SVGLength::ReadOnly::Yes));
|
||
}
|
||
|
||
return *m_height;
|
||
}
|
||
|
||
Gfx::FloatRect SVGImageElement::bounding_box() const
|
||
{
|
||
Optional<float> width;
|
||
if (attribute(HTML::AttributeNames::width).has_value())
|
||
width = m_width->base_val()->value();
|
||
|
||
Optional<float> height;
|
||
if (attribute(HTML::AttributeNames::height).has_value())
|
||
height = m_height->base_val()->value();
|
||
|
||
if (!height.has_value() && width.has_value() && intrinsic_aspect_ratio().has_value())
|
||
height = width.value() / intrinsic_aspect_ratio().value().to_float();
|
||
|
||
if (!width.has_value() && height.has_value() && intrinsic_aspect_ratio().has_value())
|
||
width = height.value() * intrinsic_aspect_ratio().value().to_float();
|
||
|
||
if (!width.has_value() && intrinsic_width().has_value())
|
||
width = intrinsic_width()->to_float();
|
||
|
||
if (!height.has_value() && intrinsic_height().has_value())
|
||
height = intrinsic_height()->to_float();
|
||
|
||
return {
|
||
m_x ? m_x->base_val()->value() : 0.0f,
|
||
m_y ? m_y->base_val()->value() : 0.0f,
|
||
width.value_or(0.0f),
|
||
height.value_or(0.0f),
|
||
};
|
||
}
|
||
|
||
// https://www.w3.org/TR/SVG2/linking.html#processingURL
|
||
void SVGImageElement::process_the_url(Optional<String> const& href)
|
||
{
|
||
if (!href.has_value()) {
|
||
m_href = {};
|
||
return;
|
||
}
|
||
|
||
m_href = document().encoding_parse_url(*href);
|
||
if (!m_href.has_value())
|
||
return;
|
||
|
||
fetch_the_document(*m_href);
|
||
}
|
||
|
||
// https://svgwg.org/svg2-draft/linking.html#processingURL-fetch
|
||
void SVGImageElement::fetch_the_document(URL::URL const& url)
|
||
{
|
||
m_load_event_delayer.emplace(document());
|
||
m_resource_request = HTML::SharedResourceRequest::get_or_create(realm(), document().page(), url);
|
||
m_resource_request->add_callbacks(
|
||
[this, resource_request = GC::Root { m_resource_request }] {
|
||
m_load_event_delayer.clear();
|
||
auto image_data = resource_request->image_data();
|
||
if (image_data->is_animated() && image_data->frame_count() > 1) {
|
||
m_current_frame_index = 0;
|
||
m_animation_timer->set_interval(image_data->frame_duration(0));
|
||
m_animation_timer->start();
|
||
}
|
||
set_needs_style_update(true);
|
||
if (auto layout_node = this->layout_node())
|
||
layout_node->set_needs_layout_update(DOM::SetNeedsLayoutReason::SVGImageElementFetchTheDocument);
|
||
|
||
dispatch_event(DOM::Event::create(realm(), HTML::EventNames::load));
|
||
},
|
||
[this] {
|
||
m_load_event_delayer.clear();
|
||
|
||
dispatch_event(DOM::Event::create(realm(), HTML::EventNames::error));
|
||
});
|
||
|
||
if (m_resource_request->needs_fetching()) {
|
||
auto request = HTML::create_potential_CORS_request(vm(), url, Fetch::Infrastructure::Request::Destination::Image, HTML::CORSSettingAttribute::NoCORS);
|
||
request->set_client(&document().relevant_settings_object());
|
||
m_resource_request->fetch_resource(realm(), request);
|
||
}
|
||
}
|
||
|
||
GC::Ptr<Layout::Node> SVGImageElement::create_layout_node(GC::Ref<CSS::ComputedProperties> style)
|
||
{
|
||
return heap().allocate<Layout::SVGImageBox>(document(), *this, move(style));
|
||
}
|
||
|
||
bool SVGImageElement::is_image_available() const
|
||
{
|
||
return m_resource_request && m_resource_request->image_data();
|
||
}
|
||
|
||
Optional<CSSPixels> SVGImageElement::intrinsic_width() const
|
||
{
|
||
if (!m_resource_request)
|
||
return {};
|
||
if (auto image_data = m_resource_request->image_data())
|
||
return image_data->intrinsic_width();
|
||
return {};
|
||
}
|
||
|
||
Optional<CSSPixels> SVGImageElement::intrinsic_height() const
|
||
{
|
||
if (!m_resource_request)
|
||
return {};
|
||
if (auto image_data = m_resource_request->image_data())
|
||
return image_data->intrinsic_height();
|
||
return {};
|
||
}
|
||
|
||
Optional<CSSPixelFraction> SVGImageElement::intrinsic_aspect_ratio() const
|
||
{
|
||
if (!m_resource_request)
|
||
return {};
|
||
if (auto image_data = m_resource_request->image_data())
|
||
return image_data->intrinsic_aspect_ratio();
|
||
return {};
|
||
}
|
||
|
||
RefPtr<Gfx::ImmutableBitmap> SVGImageElement::default_image_bitmap_sized(Gfx::IntSize size) const
|
||
{
|
||
if (!m_resource_request)
|
||
return {};
|
||
if (auto data = m_resource_request->image_data())
|
||
return data->bitmap(0, size);
|
||
return {};
|
||
}
|
||
|
||
RefPtr<Gfx::ImmutableBitmap> SVGImageElement::current_image_bitmap_sized(Gfx::IntSize size) const
|
||
{
|
||
if (!m_resource_request)
|
||
return {};
|
||
if (auto data = m_resource_request->image_data())
|
||
return data->bitmap(m_current_frame_index, size);
|
||
return {};
|
||
}
|
||
|
||
void SVGImageElement::animate()
|
||
{
|
||
auto image_data = m_resource_request->image_data();
|
||
if (!image_data) {
|
||
return;
|
||
}
|
||
|
||
m_current_frame_index = (m_current_frame_index + 1) % image_data->frame_count();
|
||
auto current_frame_duration = image_data->frame_duration(m_current_frame_index);
|
||
|
||
if (current_frame_duration != m_animation_timer->interval()) {
|
||
m_animation_timer->restart(current_frame_duration);
|
||
}
|
||
|
||
if (m_current_frame_index == image_data->frame_count() - 1) {
|
||
++m_loops_completed;
|
||
if (m_loops_completed > 0 && m_loops_completed == image_data->loop_count()) {
|
||
m_animation_timer->stop();
|
||
}
|
||
}
|
||
|
||
if (paintable())
|
||
paintable()->set_needs_display();
|
||
}
|
||
|
||
GC::Ptr<HTML::DecodedImageData> SVGImageElement::decoded_image_data() const
|
||
{
|
||
if (!m_resource_request)
|
||
return nullptr;
|
||
return m_resource_request->image_data();
|
||
}
|
||
|
||
}
|