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LibWeb: Convert images to common AbstractImageStyleValue base

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This commit moves both the ImageStyleValue and LinearGradientStyleValue
to a common base class of AbstractImageStyleValue. This abstracts
getting the natural_width/height, loading/resolving, and painting
the image.

Now for 'free' you get:

 - Linear gradients working with the various background sizing/repeat
   properties.
 - Linear gradients working as list-markers :^) -- best feature ever!

P.s. This commit is a little large as it's tricky to make this change
incrementally without breaking things.
This commit is contained in:
MacDue 2022-07-31 01:11:59 +01:00 • committed by Andreas Kling
parent 264543b90a
commit 6a6475673f
13 changed files with 140 additions and 70 deletions
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2
Userland/Libraries/LibWeb/CSS/ComputedValues.h
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@ -63,7 +63,7 @@ public:
};
struct BackgroundLayerData {
RefPtr<CSS::StyleValue> background_image { nullptr };
RefPtr<CSS::AbstractImageStyleValue> background_image { nullptr };
CSS::BackgroundAttachment attachment { CSS::BackgroundAttachment::Scroll };
CSS::BackgroundBox origin { CSS::BackgroundBox::PaddingBox };
CSS::BackgroundBox clip { CSS::BackgroundBox::BorderBox };