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LibWeb: Share decoded images at the Resource level :^)

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This patch adds ImageResource as a subclass of Resource. This new class
also keeps a Gfx::ImageDecoder so that we can share decoded bitmaps
between all clients of an image resource inside LibWeb.

With this, we now share both encoded and decoded data for images. :^)

I had to change how the purgeable-volatile flag is updated to keep the
volatile-images-outside-the-visible-viewport optimization working.
HTMLImageElement now inherits from ImageResourceClient (a subclass of
ResourceClient with additional image-specific stuff) and informs its
ImageResource about whether it's inside the viewport or outside.

This is pretty awesome! :^)
This commit is contained in:
Andreas Kling 2020-06-02 20:27:26 +02:00
parent 1c6e4e04a8
commit d4ddb0013c
Notes: sideshowbarker 2024-07-19 05:53:00 +09:00
14 changed files with 200 additions and 30 deletions
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4
Libraries/LibWeb/Loader/ResourceLoader.cpp
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@ -72,7 +72,7 @@ void ResourceLoader::load_sync(const URL& url, Function<void(const ByteBuffer&,
static HashMap<LoadRequest, NonnullRefPtr<Resource>> s_resource_cache;
RefPtr<Resource> ResourceLoader::load_resource(const LoadRequest& request)
RefPtr<Resource> ResourceLoader::load_resource(Resource::Type type, const LoadRequest& request)
{
if (!request.is_valid())
return nullptr;
@ -83,7 +83,7 @@ RefPtr<Resource> ResourceLoader::load_resource(const LoadRequest& request)
return it->value;
}
auto resource = Resource::create({}, request);
auto resource = Resource::create({}, type, request);
s_resource_cache.set(request, resource);