diff options
| author | Alan Third <alan@idiocy.org> | 2016-08-29 20:48:06 +0100 |
|---|---|---|
| committer | Alan Third <alan@idiocy.org> | 2016-09-04 23:06:14 +0100 |
| commit | 62e4dc4660cb3b29cfffcad0639e51c7f382ced8 (patch) | |
| tree | 545a6445ec5561c32b56f5ed5815768df71a6e9f /src | |
| parent | ca47390727c55a40a54d0dea3b15bd094ea9cde2 (diff) | |
Fix synthetic bold on macOS retina displays
* src/macfont.m (macfont_draw): Multiply the synthetic bold scaling
factor by the OS window backing scale factor.
Diffstat (limited to 'src')
| -rw-r--r-- | src/macfont.m | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/macfont.m b/src/macfont.m index c799100c85..d9bad034fe 100644 --- a/src/macfont.m +++ b/src/macfont.m @@ -2878,7 +2878,19 @@ macfont_draw (struct glyph_string *s, int from, int to, int x, int y, if (macfont_info->synthetic_bold_p && ! no_antialias_p) { CGContextSetTextDrawingMode (context, kCGTextFillStroke); + + /* Stroke line width for text drawing is not correctly + scaled on Retina display/HiDPI mode when drawn to screen + (whereas it is correctly scaled when drawn to bitmaps), + and synthetic bold looks thinner on such environments. + Apple says there are no plans to address this issue + (rdar://11644870) currently. So we add a workaround. */ +#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_7 + CGContextSetLineWidth (context, synthetic_bold_factor * font_size + * [[FRAME_NS_VIEW(f) window] backingScaleFactor]); +#else CGContextSetLineWidth (context, synthetic_bold_factor * font_size); +#endif CG_SET_STROKE_COLOR_WITH_FACE_FOREGROUND (context, face, f); } if (no_antialias_p) |