LibWeb: Split ImageStyleValue out of StyleValue.{h,cpp}

Userland/Libraries/LibWeb/CSS/StyleValues/ImageStyleValue.h

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
+ * Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/URL.h>
+#include <LibWeb/CSS/Enums.h>
+#include <LibWeb/CSS/StyleValue.h>
+
+namespace Web::CSS {
+
+class ImageStyleValue final
+    : public AbstractImageStyleValue
+    , public ImageResourceClient {
+public:
+    static ValueComparingNonnullRefPtr<ImageStyleValue> create(AK::URL const& url) { return adopt_ref(*new ImageStyleValue(url)); }
+    virtual ~ImageStyleValue() override = default;
+
+    virtual ErrorOr<String> to_string() const override;
+    virtual bool equals(StyleValue const& other) const override;
+
+    virtual void load_any_resources(DOM::Document&) override;
+
+    Optional<CSSPixels> natural_width() const override;
+    Optional<CSSPixels> natural_height() const override;
+
+    bool is_paintable() const override { return bitmap(0) != nullptr; }
+    void paint(PaintContext& context, DevicePixelRect const& dest_rect, CSS::ImageRendering image_rendering) const override;
+
+    Function<void()> on_animate;
+
+private:
+    ImageStyleValue(AK::URL const&);
+
+    // ^ResourceClient
+    virtual void resource_did_load() override;
+
+    void animate();
+    Gfx::Bitmap const* bitmap(size_t index) const;
+
+    AK::URL m_url;
+    WeakPtr<DOM::Document> m_document;
+
+    size_t m_current_frame_index { 0 };
+    size_t m_loops_completed { 0 };
+    RefPtr<Platform::Timer> m_timer;
+};
+
+}