From 28c37dbcf87665a4ccec58bef9ef8ff0697022dd Mon Sep 17 00:00:00 2001
From: Martin Kretzschmar <mkretzschmar@src.gnome.org>
Date: Mon, 31 Mar 2003 16:45:09 +0000
Subject: Import of Xpdf 2.00 for merge

---
(limited to 'pdf/xpdf/T1Font.cc')

diff --git a/pdf/xpdf/T1Font.cc b/pdf/xpdf/T1Font.cc
index 7b79d87..9815e49 100644
--- a/pdf/xpdf/T1Font.cc
+++ b/pdf/xpdf/T1Font.cc
@@ -6,14 +6,14 @@
 //
 //========================================================================
 
-#ifdef __GNUC__
-#pragma implementation
-#endif
-
 #include <aconf.h>
 
 #if HAVE_T1LIB_H
 
+#ifdef USE_GCC_PRAGMAS
+#pragma implementation
+#endif
+
 #include <math.h>
 #include <string.h>
 #include <X11/Xlib.h>
@@ -23,6 +23,10 @@
 
 //------------------------------------------------------------------------
 
+int T1FontEngine::t1libInitCount = 0;
+
+//------------------------------------------------------------------------
+
 T1FontEngine::T1FontEngine(Display *displayA, Visual *visualA, int depthA,
 			   Colormap colormapA, GBool aaA, GBool aaHighA):
   SFontEngine(displayA, visualA, depthA, colormapA)
@@ -32,30 +36,37 @@ T1FontEngine::T1FontEngine(Display *displayA, Visual *visualA, int depthA,
   };
 
   ok = gFalse;
-  T1_SetBitmapPad(8);
-  if (!T1_InitLib(NO_LOGFILE | IGNORE_CONFIGFILE | IGNORE_FONTDATABASE |
-		  T1_NO_AFM)) {
-    return;
-  }
   aa = aaA;
   aaHigh = aaHighA;
-  if (aa) {
-    T1_AASetBitsPerPixel(8);
-    if (aaHigh) {
-      T1_AASetLevel(T1_AA_HIGH);
-      T1_AAHSetGrayValues(grayVals);
+  //~ for multithreading: need a mutex here
+  if (t1libInitCount == 0) {
+    T1_SetBitmapPad(8);
+    if (!T1_InitLib(NO_LOGFILE | IGNORE_CONFIGFILE | IGNORE_FONTDATABASE |
+		    T1_NO_AFM)) {
+      return;
+    }
+    if (aa) {
+      T1_AASetBitsPerPixel(8);
+      if (aaHigh) {
+	T1_AASetLevel(T1_AA_HIGH);
+	T1_AAHSetGrayValues(grayVals);
+      } else {
+	T1_AASetLevel(T1_AA_LOW);
+	T1_AASetGrayValues(0, 1, 2, 3, 4);
+      }
     } else {
-      T1_AASetLevel(T1_AA_LOW);
-      T1_AASetGrayValues(0, 1, 2, 3, 4);
+      T1_AANSetGrayValues(0, 1);
     }
-  } else {
-    T1_AANSetGrayValues(0, 1);
   }
+  ++t1libInitCount;
   ok = gTrue;
 }
 
 T1FontEngine::~T1FontEngine() {
-  T1_CloseLib();
+  //~ for multithreading: need a mutex here
+  if (--t1libInitCount == 0) {
+    T1_CloseLib();
+  }
 }
 
 //------------------------------------------------------------------------
--
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