Make resolution configurable

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@196597 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/fop/fo/FOUserAgent.java

     private Map handlers = new java.util.HashMap();
     private String baseURL;
     private PDFEncryptionParams pdfEncryptionParams;
+    private float px2mm = 0.35277777777777777778f; //72dpi (=25.4/dpi)
 
     /**
      * Sets the logger.
      * @return float conversion factor
      */
     public float getPixelUnitToMillimeter() {
-        return 0.35277777777777777778f;
+        return this.px2mm;
+    }
+
+    /**
+     * Sets the resolution in dpi.
+     * @param dpi resolution in dpi
+     */
+    public void setResolution(int dpi) {
+        this.px2mm = (float)(25.4 / dpi);
     }
 
     /**