LibWeb: Add basic implementation of progress bar element

Author: https://github.com/Sauler 🔰
Commit: 21e353980f
Pull-request: https://github.com/SerenityOS/serenity/pull/12366
Reviewed-by: https://github.com/drunderscore
Reviewed-by: https://github.com/linusg
Reviewed-by: https://github.com/trflynn89 ✅

Userland/Libraries/LibWeb/Layout/Progress.cpp

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2022, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibGfx/Painter.h>
+#include <LibGfx/StylePainter.h>
+#include <LibWeb/Layout/Progress.h>
+
+namespace Web::Layout {
+
+Progress::Progress(DOM::Document& document, HTML::HTMLProgressElement& element, NonnullRefPtr<CSS::StyleProperties> style)
+    : LabelableNode(document, element, move(style))
+{
+    set_intrinsic_height(12);
+}
+
+Progress::~Progress()
+{
+}
+
+void Progress::paint(PaintContext& context, PaintPhase phase)
+{
+    if (!is_visible())
+        return;
+
+    if (phase == PaintPhase::Foreground) {
+        // FIXME: This does not support floating point value() and max()
+        Gfx::StylePainter::paint_progressbar(context.painter(), enclosing_int_rect(absolute_rect()), context.palette(), 0, dom_node().max(), dom_node().value(), "");
+    }
+}
+
+}