X-Git-Url: http://git.hcoop.net/bpt/emacs.git/blobdiff_plain/bf856382407f98916ef89acacb99c6ae612487a6..1f984e12b46da4e8758b8c547cd90d5dac72a1fd:/src/nsfont.m

diff --git a/src/nsfont.m b/src/nsfont.m
index f723acd399..db2399a7fa 100644
--- a/src/nsfont.m
+++ b/src/nsfont.m
@@ -1,6 +1,6 @@
 /* Font back-end driver for the NeXT/Open/GNUstep and MacOSX window system.
    See font.h
-   Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -22,7 +22,8 @@ Author: Adrian Robert (arobert@cogsci.ucsd.edu)
 
 /* This should be the first include, as it may set up #defines affecting
    interpretation of even the system includes. */
-#include "config.h"
+#include <config.h>
+#include <setjmp.h>
 
 #include "lisp.h"
 #include "dispextern.h"
@@ -49,7 +50,7 @@ extern Lisp_Object Qnormal, Qbold, Qitalic, Qcondensed, Qexpanded;
 static Lisp_Object Vns_reg_to_script;
 static Lisp_Object Qapple, Qroman, Qmedium;
 extern Lisp_Object Qappend;
-extern int ns_antialias_text;
+extern Lisp_Object ns_antialias_text;
 extern float ns_antialias_threshold;
 extern int ns_tmp_flags;
 extern struct nsfont_info *ns_tmp_font;
@@ -843,8 +844,10 @@ nsfont_open (FRAME_PTR f, Lisp_Object font_entity, int pixel_size)
     /* max bounds */
     font_info->max_bounds.ascent =
       lrint (hshrink * [sfont ascender] + expand * hd/2);
+    /* [sfont descender] is usually negative.  Use floor to avoid
+       clipping descenders. */
     font_info->max_bounds.descent =
-      -lrint (hshrink* [sfont descender] - expand*hd/2);
+      -lrint (floor(hshrink* [sfont descender] - expand*hd/2));
     font_info->height =
       font_info->max_bounds.ascent + font_info->max_bounds.descent;
     font_info->max_bounds.width = lrint (font_info->width);
@@ -879,8 +882,8 @@ nsfont_open (FRAME_PTR f, Lisp_Object font_entity, int pixel_size)
 #endif
 
     /* set up metrics portion of font struct */
-    font->ascent = [sfont ascender];
-    font->descent = -[sfont descender];
+    font->ascent = lrint([sfont ascender]);
+    font->descent = -lrint(floor([sfont descender]));
     font->min_width = ns_char_width(sfont, '|');
     font->space_width = lrint (ns_char_width (sfont, ' '));
     font->average_width = lrint (font_info->width);
@@ -1228,7 +1231,7 @@ nsfont_draw (struct glyph_string *s, int from, int to, int x, int y,
 
     CGContextSetFont (gcontext, font->cgfont);
     CGContextSetFontSize (gcontext, font->size);
-    if (ns_antialias_text == Qnil || font->size <= ns_antialias_threshold)
+    if (NILP (ns_antialias_text) || font->size <= ns_antialias_threshold)
       CGContextSetShouldAntialias (gcontext, 0);
     else
       CGContextSetShouldAntialias (gcontext, 1);