LibWeb/SVG: Implement SVGImageElement

This element allows images to be embedded within SVGs.
Author: https://github.com/tcl3 Commit: 03bbc2b111 Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/1198
2025-08-15 23:09:05 +00:00 · 2024-08-20 15:12:55 +01:00 · 2024-08-20 15:12:55 +01:00 · 03bbc2b111 · 2024-08-29 04:29:33 +00:00
commit 03bbc2b111
parent 267420d5aa
17 changed files with 490 additions and 8 deletions
--- a/Userland/Libraries/LibWeb/SVG/SVGImageElement.h
+++ b/Userland/Libraries/LibWeb/SVG/SVGImageElement.h
@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2024, Tim Ledbetter <tim.ledbetter@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibJS/Heap/GCPtr.h>
+#include <LibWeb/Layout/ImageProvider.h>
+#include <LibWeb/SVG/SVGAnimatedLength.h>
+#include <LibWeb/SVG/SVGGraphicsElement.h>
+
+namespace Web::SVG {
+
+class SVGImageElement
+    : public SVGGraphicsElement
+    , public SVGURIReferenceMixin<SupportsXLinkHref::Yes>
+    , public Layout::ImageProvider {
+    WEB_PLATFORM_OBJECT(SVGImageElement, SVGElement);
+
+public:
+    virtual void attribute_changed(FlyString const& name, Optional<String> const& old_value, Optional<String> const& value) override;
+
+    JS::NonnullGCPtr<SVG::SVGAnimatedLength> x();
+    JS::NonnullGCPtr<SVG::SVGAnimatedLength> y();
+    JS::NonnullGCPtr<SVG::SVGAnimatedLength> width();
+    JS::NonnullGCPtr<SVG::SVGAnimatedLength> height();
+
+    Gfx::Rect<CSSPixels> bounding_box() const;
+
+    // ^Layout::ImageProvider
+    virtual bool is_image_available() const override;
+    virtual Optional<CSSPixels> intrinsic_width() const override;
+    virtual Optional<CSSPixels> intrinsic_height() const override;
+    virtual Optional<CSSPixelFraction> intrinsic_aspect_ratio() const override;
+    virtual RefPtr<Gfx::ImmutableBitmap> current_image_bitmap(Gfx::IntSize = {}) const override;
+    virtual void set_visible_in_viewport(bool) override { }
+    virtual JS::NonnullGCPtr<DOM::Element const> to_html_element() const override { return *this; }
+
+protected:
+    SVGImageElement(DOM::Document&, DOM::QualifiedName);
+
+    virtual void initialize(JS::Realm&) override;
+    virtual void visit_edges(Cell::Visitor&) override;
+
+    void process_the_url(Optional<String> const& href);
+    void fetch_the_document(URL::URL const& url);
+
+private:
+    virtual JS::GCPtr<Layout::Node> create_layout_node(NonnullRefPtr<CSS::StyleProperties>) override;
+
+    JS::GCPtr<SVG::SVGAnimatedLength> m_x;
+    JS::GCPtr<SVG::SVGAnimatedLength> m_y;
+    JS::GCPtr<SVG::SVGAnimatedLength> m_width;
+    JS::GCPtr<SVG::SVGAnimatedLength> m_height;
+
+    URL::URL m_href;
+
+    JS::GCPtr<HTML::SharedResourceRequest> m_resource_request;
+    Optional<DOM::DocumentLoadEventDelayer> m_load_event_delayer;
+    JS::GCPtr<DOM::DocumentObserver> m_document_observer;
+};
+
+}