LibWeb: Implement HTMLVideoElement's video{Width,Height} attributes

Userland/Libraries/LibWeb/HTML/HTMLMediaElement.cpp

@@ -603,7 +603,10 @@ WebIDL::ExceptionOr<void> HTMLMediaElement::process_media_data(Function<void()>
         // 5. For video elements, set the videoWidth and videoHeight attributes, and queue a media element task given the media element to fire an event
         //    named resize at the media element.
         if (is<HTMLVideoElement>(*this)) {
-            // FIXME: Set the videoWidth and videoHeight attributes.
+            auto& video_element = verify_cast<HTMLVideoElement>(*this);
+            video_element.set_video_width(video_track->pixel_width());
+            video_element.set_video_height(video_track->pixel_height());
+
             queue_a_media_element_task([this] {
                 dispatch_event(DOM::Event::create(this->realm(), HTML::EventNames::resize.to_deprecated_fly_string()).release_value_but_fixme_should_propagate_errors());
             });

Userland/Libraries/LibWeb/HTML/HTMLVideoElement.cpp

@@ -24,4 +24,26 @@ JS::ThrowCompletionOr<void> HTMLVideoElement::initialize(JS::Realm& realm)
     return {};
 }
 
+// https://html.spec.whatwg.org/multipage/media.html#dom-video-videowidth
+u32 HTMLVideoElement::video_width() const
+{
+    // The videoWidth IDL attribute must return the intrinsic width of the video in CSS pixels. The videoHeight IDL
+    // attribute must return the intrinsic height of the video in CSS pixels. If the element's readyState attribute
+    // is HAVE_NOTHING, then the attributes must return 0.
+    if (ready_state() == ReadyState::HaveNothing)
+        return 0;
+    return m_video_width;
+}
+
+// https://html.spec.whatwg.org/multipage/media.html#dom-video-videoheight
+u32 HTMLVideoElement::video_height() const
+{
+    // The videoWidth IDL attribute must return the intrinsic width of the video in CSS pixels. The videoHeight IDL
+    // attribute must return the intrinsic height of the video in CSS pixels. If the element's readyState attribute
+    // is HAVE_NOTHING, then the attributes must return 0.
+    if (ready_state() == ReadyState::HaveNothing)
+        return 0;
+    return m_video_height;
+}
+
 }

Userland/Libraries/LibWeb/HTML/HTMLVideoElement.h

@@ -16,10 +16,19 @@ class HTMLVideoElement final : public HTMLMediaElement {
 public:
     virtual ~HTMLVideoElement() override;
 
+    void set_video_width(u32 video_width) { m_video_width = video_width; }
+    u32 video_width() const;
+
+    void set_video_height(u32 video_height) { m_video_height = video_height; }
+    u32 video_height() const;
+
 private:
     HTMLVideoElement(DOM::Document&, DOM::QualifiedName);
 
     virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
+
+    u32 m_video_width { 0 };
+    u32 m_video_height { 0 };
 };
 
 }

Userland/Libraries/LibWeb/HTML/HTMLVideoElement.idl

@@ -6,6 +6,8 @@ interface HTMLVideoElement : HTMLMediaElement {
 
     [HTMLConstructor] constructor();
 
+    readonly attribute unsigned long videoWidth;
+    readonly attribute unsigned long videoHeight;
     [CEReactions, Reflect] attribute USVString poster;
     [CEReactions, Reflect=playsinline] attribute boolean playsInline;