From c4e8ee5e6f2f42cf26b54ced44f06de13347226f Mon Sep 17 00:00:00 2001 From: Jason Rumney Date: Tue, 24 Jun 2008 10:31:12 +0000 Subject: [PATCH] (PIXEL_TO_POINT): Clarify usage in comment. --- src/font.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/src/font.h b/src/font.h index 522343255e7..2419e196186 100644 --- a/src/font.h +++ b/src/font.h @@ -477,8 +477,11 @@ struct font_bitmap on resolution DPI. */ #define POINT_TO_PIXEL(POINT, DPI) ((POINT) * (DPI) / PT_PER_INCH + 0.5) -/* Return a point size (double) corresponding to POINT size (integer) - on resolution DPI. */ +/* Return a point size corresponding to POINT size (integer) + on resolution DPI. Note that though point size is a double, we expect + it to be rounded to an int, so we add 0.5 here. If the desired value + is tenths of points (as in xfld specs), then the pixel size should + be multiplied BEFORE the conversion to avoid magnifying the error. */ #define PIXEL_TO_POINT(PIXEL, DPI) ((PIXEL) * PT_PER_INCH / (DPI) + 0.5) /* Ignore the difference of font pixel sizes less than or equal to -- 2.39.5