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authorAlan Third <alan@idiocy.org>2017-08-26 09:44:42 +0100
committerAlan Third <alan@idiocy.org>2017-08-29 17:19:05 +0100
commitfdde98113c5d1c2d4eb5c25fa750c976d90f8555 (patch)
tree5b3fe85fda709b328edb78eec1cf8b1a16882a09
parent1b0d72244d5df61d9fbe10808808b3c045a3382b (diff)
downloademacs-fdde98113c5d1c2d4eb5c25fa750c976d90f8555.tar.gz
Fix cross macOS version building (bug#28222)
* src/macfont.h (CGContextSetFontSmoothingStyle): Function declaration. * src/macfont.m (macfont_draw): Limit new code to macOS 10.8 and up.
-rw-r--r--src/macfont.h7
-rw-r--r--src/macfont.m5
2 files changed, 11 insertions, 1 deletions
diff --git a/src/macfont.h b/src/macfont.h
index 32899908be9..3a66d2d005a 100644
--- a/src/macfont.h
+++ b/src/macfont.h
@@ -82,3 +82,10 @@ typedef const struct _EmacsScreenFont *ScreenFontRef; /* opaque */
extern void mac_register_font_driver (struct frame *f);
extern void *macfont_get_nsctfont (struct font *font);
extern void macfont_update_antialias_threshold (void);
+
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1080
+/* This is an undocumented function that is probably not available
+ pre-10.8. */
+extern void CGContextSetFontSmoothingStyle(CGContextRef, int)
+ __attribute__((weak_import));
+#endif
diff --git a/src/macfont.m b/src/macfont.m
index 59891353cd3..33c28f7349a 100644
--- a/src/macfont.m
+++ b/src/macfont.m
@@ -2888,11 +2888,14 @@ macfont_draw (struct glyph_string *s, int from, int to, int x, int y,
if (no_antialias_p)
CGContextSetShouldAntialias (context, false);
- if (!NILP (ns_use_thin_smoothing))
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1080
+ if (!NILP (ns_use_thin_smoothing)
+ && CGContextSetFontSmoothingStyle != NULL)
{
CGContextSetShouldSmoothFonts(context, YES);
CGContextSetFontSmoothingStyle(context, 16);
}
+#endif
CGContextSetTextMatrix (context, atfm);
CGContextSetTextPosition (context, text_position.x, text_position.y);