Experiment with concept of YGRemeasureFunc #423

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2017-02-22T03:45:12-08:00

emilsjolander commented

2017-02-22 03:45:12 -08:00

(Migrated from github.com)

Sometimes cached measurements cannot be re-used so we must re-measure a node. Currently we do this by calling the node's measure function again. This is suboptimal for text. In a lot of cases (if the constraints have been relaxed) we can know the new size of the text without calling measure. This requires a YGRemeasureFunc, by default it would just delegate to YGMeasureFunc but for text nodes it could have a more optimal implementation.

Sometimes cached measurements cannot be re-used so we must re-measure a node. Currently we do this by calling the node's measure function again. This is suboptimal for text. In a lot of cases (if the constraints have been relaxed) we can know the new size of the text without calling measure. This requires a `YGRemeasureFunc`, by default it would just delegate to `YGMeasureFunc` but for text nodes it could have a more optimal implementation.

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Reference: DaddyFrosty/yoga#423