From: Michael Smith <xmldoc@users.sourceforge.net>
Date: Sun, 5 Sep 2004 11:32:31 +0000 (+0000)
Subject: Bug #1022519 - graphics.xsl fails with error about no X11 server
X-Git-Tag: release/1.79.1~6^2~4078
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2012958400e0a83c58b75c0929534d54217639eb;p=docbook-dsssl

Bug #1022519 - graphics.xsl fails with error about no X11 server

Problem
  Current stylesheets fail when trying to generate output under
  the following conditions:

    - Linux/Unix environment
    - no X server running
    - document contains graphics
    - use.extensions enabled

  This makes it impossible to try to do extensions-enabled
  automated transformations (e.g., nightly doc builds) in a server
  environment.

Cause
  Certain methods in the DocBook "ImageIntrisics" extensions class
  rely on the Java AWT library, which by default expects a running
  X server.

Fix
  Both the Saxon and Xalan2 versions of the extensions now set the
  "java.awt.headless" Java 1.4 system property to true. That
  property tells Java to continue processing AWT-based code even
  if no running X server is found.

  The property is set at the beginning of the constructor for the
  ImageIntrinsics class.

Affects
  This change only affects transformations using Saxon or Xalan2
  under the conditions:

    - Linux/Unix environment
    - no X server running
    - document contains graphics
    - use.extensions enabled
---

diff --git a/xsl/extensions/saxon643/com/nwalsh/saxon/ImageIntrinsics.java b/xsl/extensions/saxon643/com/nwalsh/saxon/ImageIntrinsics.java
index 6c32d2f8d..9dd22294f 100644
--- a/xsl/extensions/saxon643/com/nwalsh/saxon/ImageIntrinsics.java
+++ b/xsl/extensions/saxon643/com/nwalsh/saxon/ImageIntrinsics.java
@@ -40,6 +40,7 @@ public class ImageIntrinsics implements ImageObserver {
    * <p>Constructor for ImageIntrinsics</p>
    */
   public ImageIntrinsics(String imageFn) {
+    System.setProperty("java.awt.headless","true");
     image = Toolkit.getDefaultToolkit().getImage (imageFn);
     width = image.getWidth(this);
 
diff --git a/xsl/extensions/xalan2/com/nwalsh/xalan/ImageIntrinsics.java b/xsl/extensions/xalan2/com/nwalsh/xalan/ImageIntrinsics.java
index e4dca7145..97a13a3a5 100644
--- a/xsl/extensions/xalan2/com/nwalsh/xalan/ImageIntrinsics.java
+++ b/xsl/extensions/xalan2/com/nwalsh/xalan/ImageIntrinsics.java
@@ -42,6 +42,7 @@ public class ImageIntrinsics implements ImageObserver {
    * <p>Constructor for ImageIntrinsics</p>
    */
   public ImageIntrinsics(ExpressionContext context, String imageFn) {
+    System.setProperty("java.awt.headless","true");
     image = Toolkit.getDefaultToolkit().getImage (imageFn);
     width = image.getWidth(this);