third_party/WebKit/Source/modules/csspaint/README.md - Issue 1896893004: Hook up style invalidation for CSS Paint API.

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Unified Diff: third_party/WebKit/Source/modules/csspaint/README.md

Issue 1896893004: Hook up style invalidation for CSS Paint API. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@css-paint-register

Patch Set: rebase. Created 4 years, 7 months ago

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Index: third_party/WebKit/Source/modules/csspaint/README.md

diff --git a/third_party/WebKit/Source/modules/csspaint/README.md b/third_party/WebKit/Source/modules/csspaint/README.md

index 926274472e6b4981aadbef3fbbcebc131f799f92..860623bbe5e8c18aa3aaef7e77be6eb1658951b1 100644

--- a/third_party/WebKit/Source/modules/csspaint/README.md

+++ b/third_party/WebKit/Source/modules/csspaint/README.md

@@ -49,6 +49,15 @@ This method returns the `PaintGeneratedImage`.

The `SkPicture` is produced from a `RecordingImageBufferSurface`.

+### Style Invalidation

+The `CSSPaintDefinition` keeps a list of both native and custom properties it will invalidate on.

+During style invalidation `ComputedStyle` checks if it has any `CSSPaintValue`s, and if any of their

+properties have changed; if so it will invalidate paint for that `ComputedStyle`.

+If the `CSSPaintValue` doesn't have a corresponding `CSSPaintDefinition` yet, it doesn't invalidate

+paint.

## Testing

Tests live [here](../../../LayoutTests/csspaint/).

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