| commit | 2a2325b0699615424fc557f8d6db2190dd304048 | [log] [tgz] |
|---|---|---|
| author | Phillip Webb <pwebb@pivotal.io> | Tue Dec 22 10:50:14 2015 +0000 |
| committer | Lakshmi Shanmugam <lshanmug@in.ibm.com> | Fri Dec 14 00:49:43 2018 -0500 |
| tree | 949659c1d5eb5a14830b64b3a8609d17af6bc842 | |
| parent | 4490549bb9093dc44dc579a5947718c93cc5a4ec [diff] |
Bug 366471 - Improve OSX scroll performance with drawText caching Add caching to GC.drawText to prevent multiple calls with the same single character from needed to perform expensive layout operations. Any call to GC.drawText() that is rendering a single character on a transparent background is now a cache candidate. The cache is limited to 20 items and is specifically designed to work well with classes such as WhitespaceCharacterPainter which frequently call drawText() but operate with a relatively small set of characters. Change-Id: I0ac4e3478e212ba5e410c5a06a6827279143f7be Also-by: Karsten Thoms <karsten.thoms@itemis.de> Signed-off-by: Phillip Webb <pwebb@pivotal.io>
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