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Merge pull request #38 from anthonyc-r/scale_factor_font_advancement

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Cairo: Disable font hinting when GSScaleFactor is not 1 to fix text d…
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Fred Kiefer 2022-01-24 20:03:00 +01:00 committed by GitHub
commit db40d23ed6
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 13 additions and 1 deletions
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14
Source/cairo/CairoFontInfo.m
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@ -48,6 +48,7 @@ void set_font_options(cairo_font_options_t *options)
cairo_hint_metrics_t metrics = CAIRO_HINT_METRICS_ON;
cairo_hint_style_t style = CAIRO_HINT_STYLE_NONE;
int hinting = [ud integerForKey: @"GSFontHinting"];
float scale = [ud floatForKey: @"GSScaleFactor"];
int subpixel = 0;
if (hinting == 0)
@ -58,7 +59,18 @@ void set_font_options(cairo_font_options_t *options)
*/
if (nil == [ud objectForKey: @"GSFontHinting"])
{
hinting = 33;
/*
* Default hinting to off if scale is set to something other than 1.0. As
* hinting + scaling breaks assumptions about glyph advancement made in gui.
*/
if (scale == 0.0f || scale == 1.0f)
{
hinting = 33;
}
else
{
hinting = 17;
}
}
}