src/hb-coretext.cc | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
New commits:
commit c2cf68dbdffcbf45297dd161b4b6b2de667b5ae4
Author: Behdad Esfahbod <beh...@behdad.org>
Date: Fri Oct 13 10:30:19 2017 +0200
[coretext] Fix build
diff --git a/src/hb-coretext.cc b/src/hb-coretext.cc
index c8a4a652..22661407 100644
--- a/src/hb-coretext.cc
+++ b/src/hb-coretext.cc
@@ -38,13 +38,18 @@
#endif
/*
https://developer.apple.com/documentation/coretext/1508745-ctfontcreatewithgraphicsfont
*/
-#define HB_CORETEXT_DEFAULT_FONT_SIZE 12f
+#define HB_CORETEXT_DEFAULT_FONT_SIZE 12.f
static CGFloat
coretext_font_size (float ptem)
{
- ptem *= 96f / 72f;
- return ptem <= 0f ? HB_CORETEXT_DEFAULT_FONT_SIZE : ptem;
+ /* CoreText points are CSS pixels (96 per inch),
+ * NOT typographic points (72 per inch).
+ *
+ *
https://developer.apple.com/library/content/documentation/GraphicsAnimation/Conceptual/HighResolutionOSX/Explained/Explained.html
+ */
+ ptem *= 96.f / 72.f;
+ return ptem <= 0.f ? HB_CORETEXT_DEFAULT_FONT_SIZE : ptem;
}
static void
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