Added old abandoned KDE3 version of gwenview

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/gwenview@1088034 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

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+<chapter id="external_tools">
+<title>External tools</title>
+
+<para>You can easily extend &kappname; by defining external tools. These tools
+  are accessible from the contextual popup menu which appears when
+  right-clicking on a thumbnail or in the image view. Look in the
+  <menuchoice><guimenu>External Tools</guimenu></menuchoice> entry.</para>
+
+<para>&kappname; comes with a few predefined external tools, but it's very
+  easy to add more through the <guilabel>Configure External Tools</guilabel> dialog. You can open
+  it from <menuchoice><guimenu>Settings</guimenu><guimenuitem>Configure
+      External Tools...</guimenuitem></menuchoice>.
+</para>
+  
+<para>Here is how it looks:
+
+<screenshot>
+  <screeninfo>External tools dialog</screeninfo>
+  <mediaobject>
+    <imageobject>
+      <imagedata fileref="external_tools_dialog.png" format="PNG" />
+    </imageobject>
+  </mediaobject>
+</screenshot>
+</para>
+
+<para>In this example, I defined an external tool which will call Exiftran to
+  regenerate the EXIF tags for JPEG images. Here is a more detailed description
+  of its definition:</para>
+
+<itemizedlist>
+  <listitem>
+    <para>The <guilabel>Name:</guilabel> field contains the description of your
+      tool, has it will appear in the menu.
+    </para>
+  </listitem>
+  <listitem>
+    <para>The <guilabel>Command:</guilabel> field contains the command which
+      will be run when this tool is invoked.
+      Click on the little question mark on the right of the field to get a list
+      of the keywords you can use in this field. These keywords will get
+      expanded to the image files.
+    </para>
+  </listitem>
+  <listitem>
+    <para>
+      The button on the right lets you associate an icon with your tool.
+    </para>
+  </listitem>
+  <listitem>
+    <para>
+      The <guilabel>File Associations</guilabel> group indicates what type of
+      files this tool can work with. Your tool will only appear in the 
+      <menuchoice><guimenu>External Tools</guimenu></menuchoice> menu if the
+      selected files are of the correct type. In my example, this tool is only
+      valid with JPEG images, so I choose <guilabel>Custom:</guilabel>, then
+      <guilabel>image/jpeg</guilabel> and <guilabel>image/pjpeg</guilabel>.
+    </para>
+  </listitem>
+</itemizedlist>
+
+<tip>
+  <para>You can find other external tool examples from
+    <ulink url="http://gwenview.sourceforge.net/tools">&kappname; web site</ulink>.
+  </para>
+</tip>
+
+</chapter>
+<!-- vim: set ft=xml: -->