> **Problem** > > Glyphs aren't stretched by applying an affine transform `scale(2, 1)` to a > font. Instead, the space between glyphs increases. > > **Root Cause** > > Bitmaps embedded in the font are used to render the glyphs; the bitmaps > aren't transformed, so white-space is seen which fills the requested > horizontal size. > > **Fix** > > Disable using embedded bitmaps if horizontal transform is different from the > vertical one. > > It's similar to [JDK-8204929](https://bugs.openjdk.org/browse/JDK-8204929) > and [JDK-8255387](https://bugs.openjdk.org/browse/JDK-8255387). > > **Test** > > When embedded bitmaps are used, the right half of the image remains filled > with the background colour. The test looks for non-white pixels in the right > half of the image. If there are only white pixels in the right half of the > image, the test fails; if there are other colours, the test passes. > > I can reproduce the problem on Windows only. Without the fix, the test > reports 6 failures for "MS Gothic", "MS PGothic" and "MS UI Gothic" fonts > when text antialiasing is off and when LCD antialiasing is enabled. If > greyscale antialiasing is enabled, the glyphs are stretched as expected, this > case was handled in JDK-8204929; it can be used as a workaround. > > All client tests pass. > > The test could be *headless*, but headless systems, especially with Linux, > don't have fonts installed. Without fonts, the test is useless, therefore I > made it *headful*.
Alexey Ivanov has updated the pull request incrementally with one additional commit since the last revision: Make the test headless, use Locale.ENGLISH instead of US ------------- Changes: - all: https://git.openjdk.org/jdk/pull/15335/files - new: https://git.openjdk.org/jdk/pull/15335/files/e0dc3307..980fdcd0 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=15335&range=01 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15335&range=00-01 Stats: 3 lines in 1 file changed: 0 ins; 1 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/15335.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/15335/head:pull/15335 PR: https://git.openjdk.org/jdk/pull/15335
