Add GUI check box control whether to retainn kpdf metadata.

This resolves bug report 1215.

kghostview/kghostview.kcfg

@@ -45,6 +45,11 @@
       <label>Watch File</label>
       <whatsthis>If this is on, then the file will be reloaded whenever it changes on disk</whatsthis>
       <default>false</default>
+    </entry>
+    <entry name="RetainDocumentData" type="Bool">
+      <label>Retain document viewing data</label>
+      <whatsthis>If this is on, then document viewing options are retained</whatsthis>
+      <default>true</default>
     </entry>
 	</group>
 	<group name="Ghostscript">

kpdf/conf/dlggeneral.ui

@@ -92,6 +92,14 @@
                             <string>&amp;Watch file</string>
                           </property>
                         </widget>
+                        <widget class="TQCheckBox">
+                          <property name="name">
+                            <cstring>kcfg_RetainDocumentData</cstring>
+                          </property>
+                          <property name="text">
+                            <string>&amp;Retain document viewing data</string>
+                          </property>
+                        </widget>
                     </vbox>
                 </widget>
                 <widget class="TQLayoutWidget">

kpdf/conf/kpdf.kcfg

@@ -56,6 +56,9 @@
   <entry key="ObeyDRM" type="Bool" >
     <default>true</default>
   </entry>
+  <entry key="RetainDocumentData" type="Bool" >
+    <default>true</default>
+  </entry>
  </group>
  <group name="MainView" >
   <entry key="ShowLeftPanel" type="Bool" >

kpdf/core/document.cpp

@@ -1404,6 +1404,8 @@ void KPDFDocument::saveDocumentInfo() const
     if ( d->docFileName.isNull() )
         return;
 
+    if ( KpdfSettings::retainDocumentData() )
+    {
       TQFile infoFile( d->xmlFileName );
       if (infoFile.open( IO_WriteOnly | IO_Truncate) )
       {
@@ -1463,6 +1465,7 @@ void KPDFDocument::saveDocumentInfo() const
           os << xml;
       }
       infoFile.close();
+    }
 }
 
 void KPDFDocument::slotTimedMemoryCheck()

kviewshell/kviewshell.kcfg

@@ -11,6 +11,9 @@
   <entry key="WatchFile" type="Bool">
     <default>true</default>
   </entry>
+  <entry key="RetainDocumentData" type="Bool">
+    <default>true</default>
+  </entry>
   <entry key="Zoom" type="Double">
     <default>1.0</default>
   </entry>