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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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9
Libraries/LibWeb/Loader/Resource.cpp
View file

@ -30,13 +30,16 @@
namespace Web {
NonnullRefPtr<Resource> Resource::create(Badge<ResourceLoader>, const LoadRequest& request)
NonnullRefPtr<Resource> Resource::create(Badge<ResourceLoader>, Type type, const LoadRequest& request)
{
return adopt(*new Resource(request));
if (type == Type::Image)
return adopt(*new ImageResource(request));
return adopt(*new Resource(type, request));
}
Resource::Resource(const LoadRequest& request)
Resource::Resource(Type type, const LoadRequest& request)
: m_request(request)
, m_type(type)
{
}