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authorPedro CĂ´rte-Real <pedro@pedrocr.net>2019-07-28 11:17:33 +0100
committerDrew DeVault <sir@cmpwn.com>2020-01-01 10:14:29 -0700
commit800834476200298535f4ac1be8abe58fc501cb04 (patch)
tree2f5d8e3f71d090b7357d0adc376a401677ed9273 /swaybar/tray/item.c
parented02261551ac7748d38af4a0bcdeeab0437571fe (diff)
Avoid numerical instability in resize
Because the layout code rounds down the dimensions of the windows resizing would often be off by one pixel. The width/height fraction would not exactly reflect the final computed width and so the resize code would end up calculating things wrong. To fix this first snap the container size fractions to the pixel grid and only then do the resize. Also use round() instead of floor() during layout to avoid a slightly too small width. This applies in two cases: 1. For the container we are actually resizing using floor() might result in being 1px too small. 2. For the other containers it might result in resizing them down by 1px and then if the container being resized is the last all those extra pixels would make the resize too large. Fixes #4391
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