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Round up output geometry

Yifan Zhu requested to merge (removed):fix into master

Under fractional scaling, output screens can have non-integral sizes. Previous code uses QSizeF::toSize(), which rounds to the nearest integer. This sometimes results in different screens sharing one pixel at the edge, which causes BUG 464842 and BUG 477791.

Use the new Output::explicitLogicalSizeInt() and Config::logicalSizeForOutputInt functions to explicitly round up non-integral sizes.

Depends on libkscreen!172 (merged), the corresponding MR to libkscreen.


BUG: 464842 BUG: 477791

Edited by Yifan Zhu

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