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f6497b64ac
Calling this "Box" made it very confusing to look at code that used both Layout::Box and Painting::Box. Let's try calling it Paintable instead.
128 lines
4.2 KiB
C++
128 lines
4.2 KiB
C++
/*
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* Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGfx/Bitmap.h>
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#include <LibWeb/CSS/Parser/Parser.h>
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#include <LibWeb/CSS/StyleComputer.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/Event.h>
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#include <LibWeb/HTML/EventNames.h>
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#include <LibWeb/HTML/HTMLImageElement.h>
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#include <LibWeb/Layout/ImageBox.h>
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#include <LibWeb/Loader/ResourceLoader.h>
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#include <LibWeb/Painting/Paintable.h>
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namespace Web::HTML {
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HTMLImageElement::HTMLImageElement(DOM::Document& document, DOM::QualifiedName qualified_name)
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: FormAssociatedElement(document, move(qualified_name))
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, m_image_loader(*this)
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{
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m_image_loader.on_load = [this] {
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set_needs_style_update(true);
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queue_an_element_task(HTML::Task::Source::DOMManipulation, [this] {
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dispatch_event(DOM::Event::create(EventNames::load));
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});
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};
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m_image_loader.on_fail = [this] {
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dbgln("HTMLImageElement: Resource did fail: {}", src());
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set_needs_style_update(true);
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queue_an_element_task(HTML::Task::Source::DOMManipulation, [this] {
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dispatch_event(DOM::Event::create(EventNames::error));
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});
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};
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m_image_loader.on_animate = [this] {
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if (layout_node())
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layout_node()->set_needs_display();
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};
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}
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HTMLImageElement::~HTMLImageElement()
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{
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}
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void HTMLImageElement::apply_presentational_hints(CSS::StyleProperties& style) const
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{
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for_each_attribute([&](auto& name, auto& value) {
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if (name == HTML::AttributeNames::width) {
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if (auto parsed_value = parse_html_length(document(), value)) {
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style.set_property(CSS::PropertyID::Width, parsed_value.release_nonnull());
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}
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} else if (name == HTML::AttributeNames::height) {
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if (auto parsed_value = parse_html_length(document(), value)) {
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style.set_property(CSS::PropertyID::Height, parsed_value.release_nonnull());
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}
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}
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});
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}
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void HTMLImageElement::parse_attribute(const FlyString& name, const String& value)
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{
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HTMLElement::parse_attribute(name, value);
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if (name == HTML::AttributeNames::src && !value.is_empty())
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m_image_loader.load(document().parse_url(value));
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}
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RefPtr<Layout::Node> HTMLImageElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
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{
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return adopt_ref(*new Layout::ImageBox(document(), *this, move(style), m_image_loader));
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}
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const Gfx::Bitmap* HTMLImageElement::bitmap() const
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{
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return m_image_loader.bitmap(m_image_loader.current_frame_index());
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}
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// https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-width
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unsigned HTMLImageElement::width() const
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{
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const_cast<DOM::Document&>(document()).update_layout();
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// Return the rendered width of the image, in CSS pixels, if the image is being rendered.
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if (auto* paint_box = this->paint_box())
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return paint_box->content_width();
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// ...or else the density-corrected intrinsic width and height of the image, in CSS pixels,
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// if the image has intrinsic dimensions and is available but not being rendered.
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if (m_image_loader.has_image())
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return m_image_loader.width();
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// ...or else 0, if the image is not available or does not have intrinsic dimensions.
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return 0;
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}
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void HTMLImageElement::set_width(unsigned width)
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{
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set_attribute(HTML::AttributeNames::width, String::number(width));
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}
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// https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-height
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unsigned HTMLImageElement::height() const
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{
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const_cast<DOM::Document&>(document()).update_layout();
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// Return the rendered height of the image, in CSS pixels, if the image is being rendered.
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if (auto* paint_box = this->paint_box())
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return paint_box->content_height();
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// ...or else the density-corrected intrinsic height and height of the image, in CSS pixels,
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// if the image has intrinsic dimensions and is available but not being rendered.
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if (m_image_loader.has_image())
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return m_image_loader.height();
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// ...or else 0, if the image is not available or does not have intrinsic dimensions.
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return 0;
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}
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void HTMLImageElement::set_height(unsigned height)
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{
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set_attribute(HTML::AttributeNames::height, String::number(height));
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}
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}
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