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Refactor font_getsize and font_render #4910
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e8dcbff
horizontal text - cleanup and bugfixes
nulano cee61d7
vertical text - cleanup and bugfixes
nulano e3450d1
text bugfixes
nulano 5d57261
fix text clipping due to rounding
nulano ea582a1
fix basic layout
nulano 54e0677
fix and add tests
nulano 5d541e3
simplify code, organize variable declarations, add comments
nulano ee1cc6a
remove use of FT_Set_Transform
nulano d1edf86
tests cleanup
nulano a501ba9
update link in comment
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This PR fixes an issue introduced in #2576 (Pillow 4.2.0) where the x offset was sometimes added (subtracted) twice in the C function, see #4789 (comment). This change adjusts the Python function to match this behaviour after fixing the C function.
The offset was first added in #784 to match pre-#45/#185 behaviour (and make
getsize
return the bottom right text coordinate, which used to match the size), but #2576 effectively reverted this change for the horizontal axis when the first character has a negative X bearing in horizontal text (otherwise the x offset is 0).I think it is better to stick with the current behaviour (which returns the actual width but might be confusing if the first character has a negative bearing) and document it (in part 3 of #4724) rather than reverting back to the previous behaviour, as it has been this way for a long time now.
I have updated the comment to link to this explanation for future reference.