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Remove hard-coded devicePixelRatio from paintImage #117477

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#118721
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Remove hard-coded devicePixelRatio from paintImage#117477
#118721
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goderbauer
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P1High-priority issues at the top of the work lista: imagesLoading, displaying, rendering imagesframeworkflutter/packages/flutter repository. See also f: labels.
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@goderbauer
goderbauer
opened on Dec 21, 2022

paintImage currently hard-codes the device pixel ratio by reaching out to the window singleton:

flutter/packages/flutter/lib/src/painting/decoration_image.dart

Lines 565 to 567 in d1244b7

// It's ok to use this instead of a MediaQuery because if this changes,
// whatever is aware of the MediaQuery will be repainting the image anyway.
displaySize: outputSize * PaintingBinding.instance.window.devicePixelRatio,

In a multi-viewed world, this will not work anymore because paintImage has no idea what view the image is getting painted on. This will need to be refactored to get the devicePixelRatio passed in.

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P1High-priority issues at the top of the work lista: imagesLoading, displaying, rendering imagesframeworkflutter/packages/flutter repository. See also f: labels.

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