From cd2b8ed39958133f06e60954150a271391134aac Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Mon, 4 Apr 2011 12:28:20 +0000
Subject: Fix error that can happen with some 3rd party fonts lacking certain
 size information.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8558 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/fl_font_mac.cxx | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'src')

diff --git a/src/fl_font_mac.cxx b/src/fl_font_mac.cxx
index bc777ad12..dfadfcb15 100644
--- a/src/fl_font_mac.cxx
+++ b/src/fl_font_mac.cxx
@@ -80,6 +80,17 @@ if (fl_mac_os_version >= 100500) {//unfortunately, CTFontCreateWithName != NULL
 					   &kCFTypeDictionaryValueCallBacks);
     CFDictionarySetValue (attributes, kCTKernAttributeName, zero_ref);
   }
+  if (ascent == 0) { // this may happen with some third party fonts
+    CFDictionarySetValue (attributes, kCTFontAttributeName, fontref);
+    CFAttributedStringRef mastr = CFAttributedStringCreate(kCFAllocatorDefault, CFSTR("Wj"), attributes);
+    CTLineRef ctline = CTLineCreateWithAttributedString(mastr);
+    CFRelease(mastr);
+    CGFloat fascent, fdescent;
+    CTLineGetTypographicBounds(ctline, &fascent, &fdescent, NULL);
+    CFRelease(ctline);
+    ascent = (short)(fascent + 0.5);
+    descent = (short)(fdescent + 0.5);
+    }
 }
 else {
 #endif
-- 
cgit v1.2.3