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

2025-07-25 20:37:35 +00:00 · 2023-03-24 15:17:11 +00:00 · 2023-03-24 15:17:11 +00:00 · 35b240c87d
commit 35b240c87d
parent 76de017a51
7 changed files with 166 additions and 126 deletions
--- a/Userland/Libraries/LibWeb/CSS/StyleValues/ImageStyleValue.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/ImageStyleValue.cpp
@ -0,0 +1,107 @@
+/*
+ * 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
+ */
+
+#include "ImageStyleValue.h"
+#include <LibWeb/CSS/Serialize.h>
+#include <LibWeb/DOM/Document.h>
+#include <LibWeb/Loader/ResourceLoader.h>
+#include <LibWeb/Platform/Timer.h>
+
+namespace Web::CSS {
+
+ImageStyleValue::ImageStyleValue(AK::URL const& url)
+    : AbstractImageStyleValue(Type::Image)
+    , m_url(url)
+{
+}
+
+void ImageStyleValue::load_any_resources(DOM::Document& document)
+{
+    if (resource())
+        return;
+
+    m_document = &document;
+    auto request = LoadRequest::create_for_url_on_page(m_url, document.page());
+    set_resource(ResourceLoader::the().load_resource(Resource::Type::Image, request));
+}
+
+void ImageStyleValue::resource_did_load()
+{
+    if (!m_document)
+        return;
+    // FIXME: Do less than a full repaint if possible?
+    if (m_document && m_document->browsing_context())
+        m_document->browsing_context()->set_needs_display();
+
+    if (resource()->is_animated() && resource()->frame_count() > 1) {
+        m_timer = Platform::Timer::create();
+        m_timer->set_interval(resource()->frame_duration(0));
+        m_timer->on_timeout = [this] { animate(); };
+        m_timer->start();
+    }
+}
+
+void ImageStyleValue::animate()
+{
+    m_current_frame_index = (m_current_frame_index + 1) % resource()->frame_count();
+    auto current_frame_duration = resource()->frame_duration(m_current_frame_index);
+
+    if (current_frame_duration != m_timer->interval())
+        m_timer->restart(current_frame_duration);
+
+    if (m_current_frame_index == resource()->frame_count() - 1) {
+        ++m_loops_completed;
+        if (m_loops_completed > 0 && m_loops_completed == resource()->loop_count())
+            m_timer->stop();
+    }
+
+    if (on_animate)
+        on_animate();
+}
+
+Gfx::Bitmap const* ImageStyleValue::bitmap(size_t frame_index) const
+{
+    if (!resource())
+        return nullptr;
+    return resource()->bitmap(frame_index);
+}
+
+ErrorOr<String> ImageStyleValue::to_string() const
+{
+    return serialize_a_url(m_url.to_deprecated_string());
+}
+
+bool ImageStyleValue::equals(StyleValue const& other) const
+{
+    if (type() != other.type())
+        return false;
+    return m_url == other.as_image().m_url;
+}
+
+Optional<CSSPixels> ImageStyleValue::natural_width() const
+{
+    if (auto* b = bitmap(0); b != nullptr)
+        return b->width();
+    return {};
+}
+
+Optional<CSSPixels> ImageStyleValue::natural_height() const
+{
+    if (auto* b = bitmap(0); b != nullptr)
+        return b->height();
+    return {};
+}
+
+void ImageStyleValue::paint(PaintContext& context, DevicePixelRect const& dest_rect, CSS::ImageRendering image_rendering) const
+{
+    if (auto* b = bitmap(m_current_frame_index); b != nullptr)
+        context.painter().draw_scaled_bitmap(dest_rect.to_type<int>(), *b, bitmap(0)->rect(), 1.0f, to_gfx_scaling_mode(image_rendering));
+}
+
+}