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LibWeb: Support animations in embedded SVG images

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Tim Ledbetter 2024-08-29 21:41:22 +01:00 • committed by Alexander Kalenik
parent b86f57ebf7
commit a95905f93f
Notes: github-actions[bot] 2024-08-30 11:35:58 +00:00
2 changed files with 41 additions and 1 deletions
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37
Userland/Libraries/LibWeb/SVG/SVGImageElement.cpp
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@ -5,12 +5,14 @@
*/
#include "SVGImageElement.h"
#include <LibCore/Timer.h>
#include <LibJS/Heap/Heap.h>
#include <LibWeb/Bindings/SVGImageElementPrototype.h>
#include <LibWeb/DOM/DocumentObserver.h>
#include <LibWeb/HTML/PotentialCORSRequest.h>
#include <LibWeb/HTML/SharedResourceRequest.h>
#include <LibWeb/Layout/SVGImageBox.h>
#include <LibWeb/Painting/Paintable.h>
#include <LibWeb/SVG/SVGDecodedImageData.h>
namespace Web::SVG {
@ -18,6 +20,8 @@ namespace Web::SVG {
SVGImageElement::SVGImageElement(DOM::Document& document, DOM::QualifiedName qualified_name)
: SVGGraphicsElement(document, move(qualified_name))
{
m_animation_timer = Core::Timer::try_create().release_value_but_fixme_should_propagate_errors();
m_animation_timer->on_timeout = [this] { animate(); };
}
void SVGImageElement::initialize(JS::Realm& realm)
@ -156,6 +160,12 @@ void SVGImageElement::fetch_the_document(URL::URL const& url)
m_resource_request->add_callbacks(
[this] {
m_load_event_delayer.clear();
auto image_data = m_resource_request->image_data();
if (image_data->is_animated() && image_data->frame_count() > 1) {
m_current_frame_index = 0;
m_animation_timer->set_interval(image_data->frame_duration(0));
m_animation_timer->start();
}
},
[this] {
m_load_event_delayer.clear();
@ -210,8 +220,33 @@ RefPtr<Gfx::ImmutableBitmap> SVGImageElement::current_image_bitmap(Gfx::IntSize
if (!m_resource_request)
return {};
if (auto data = m_resource_request->image_data())
return data->bitmap(0, size);
return data->bitmap(m_current_frame_index, size);
return {};
}
void SVGImageElement::animate()
{
auto image_data = m_resource_request->image_data();
if (!image_data) {
return;
}
m_current_frame_index = (m_current_frame_index + 1) % image_data->frame_count();
auto current_frame_duration = image_data->frame_duration(m_current_frame_index);
if (current_frame_duration != m_animation_timer->interval()) {
m_animation_timer->restart(current_frame_duration);
}
if (m_current_frame_index == image_data->frame_count() - 1) {
++m_loops_completed;
if (m_loops_completed > 0 && m_loops_completed == image_data->loop_count()) {
m_animation_timer->stop();
}
}
if (paintable())
paintable()->set_needs_display();
}
}