From b6bde2e4569aa617c8a6af64947c688c624ed7f8 Mon Sep 17 00:00:00 2001
From: Matthias Melcher <fltk@matthiasm.com>
Date: Wed, 10 Sep 2008 23:56:49 +0000
Subject: Merging the UTF8 patch, consisting of O'ksi'd s original 1.1.6 patch
 and additions by Ian. PLEASE BE AWARE that the patch in its current
 incarnation is a regression in many aspects and further work is required
 before we can announce Unicode support.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6212 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/fl_draw.cxx | 27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)

(limited to 'src/fl_draw.cxx')

diff --git a/src/fl_draw.cxx b/src/fl_draw.cxx
index 216ec072a..0a1f55a97 100644
--- a/src/fl_draw.cxx
+++ b/src/fl_draw.cxx
@@ -33,6 +33,8 @@
 // Aligns them against the inside of the box.
 
 #define min(a,b) ((a)<(b)?(a):(b))
+#include <FL/fl_utf8.H>
+#include <FL/Fl.H>
 #include <FL/fl_draw.H>
 #include <FL/Fl_Image.H>
 
@@ -53,11 +55,11 @@ static char* underline_at;
 // Sets n to the number of characters put into the buffer.
 // Sets width to the width of the string in the current font.
 
-static const char*
-expand(const char* from, char* buf, double maxw, int& n, double &width,
-       int wrap, int draw_symbols) {
+const char*
+fl_expand_text(const char* from, char* buf, int maxbuf, double maxw, int& n, 
+	double &width, int wrap, int draw_symbols) {
   char* o = buf;
-  char* e = buf+(MAXBUF-4);
+  char* e = buf+(maxbuf-4);
   underline_at = 0;
   char* word_end = o;
   const char* word_start = from;
@@ -88,7 +90,8 @@ expand(const char* from, char* buf, double maxw, int& n, double &width,
     if (o > e) break; // don't overflow buffer
 
     if (c == '\t') {
-      for (c = (o-buf)%8; c<8 && o<e; c++) *o++ = ' ';
+      for (c = fl_utf_nb_char((uchar*)buf, o-buf)%8; c<8 && o<e; c++) 
+           *o++ = ' ';
     } else if (c == '&' && fl_draw_shortcut && *(p+1)) {
       if (*(p+1) == '&') {p++; *o++ = '&';}
       else if (fl_draw_shortcut != 2) underline_at = o;
@@ -158,13 +161,15 @@ void fl_draw(
 
   symtotal = symwidth[0] + symwidth[1];
 
+  if (str) {
   for (p = str, lines=0; p;) {
-    e = expand(p, buf, w - symtotal, buflen, width, align&FL_ALIGN_WRAP,
-               draw_symbols);
+      e = fl_expand_text(p, buf, MAXBUF, w - symtotal, buflen, width, 
+		align&FL_ALIGN_WRAP, draw_symbols);
     lines++;
     if (!*e || (*e == '@' && e[1] != '@' && draw_symbols)) break;
     p = e;
   }
+  } else lines = 0;
 
   if ((symwidth[0] || symwidth[1]) && lines) {
     if (symwidth[0]) symwidth[0] = lines * fl_height();
@@ -201,8 +206,8 @@ void fl_draw(
   if (str) {
     int desc = fl_descent();
     for (p=str; ; ypos += height) {
-      if (lines>1) e = expand(p, buf, w - symtotal, buflen, width,
-                              align&FL_ALIGN_WRAP, draw_symbols);
+      if (lines>1) e = fl_expand_text(p, buf, MAXBUF, w - symtotal, buflen, 
+				width, align&FL_ALIGN_WRAP, draw_symbols);
       else e = "";
 
       if (width > symoffset) symoffset = (int)(width + 0.5);
@@ -313,7 +318,9 @@ void fl_measure(const char* str, int& w, int& h, int draw_symbols) {
   symtotal = symwidth[0] + symwidth[1];
   
   for (p = str, lines=0; p;) {
-    e = expand(p, buf, w - symtotal, buflen, width, w != 0, draw_symbols);
+//    e = expand(p, buf, w - symtotal, buflen, width, w != 0, draw_symbols);
+    e = fl_expand_text(p, buf, MAXBUF, w - symtotal, buflen, width, 
+			w != 0, draw_symbols);
     if ((int)ceil(width) > W) W = (int)ceil(width);
     lines++;
     if (!*e || (*e == '@' && draw_symbols)) break;
-- 
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