1 files changed, 75 insertions, 0 deletions
diff --git a/src/dia_about.inc b/src/dia_about.inc
new file mode 100644
index 0000000..2055ea6
--- /dev/null
+++ b/src/dia_about.inc
@@ -0,0 +1,75 @@
+% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+%
+% Panel 'about' entry.
+%
+% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+% Show help window.
+%
+% ( ) => ( )
+%
+/panel.about {
+  panel 0 panel.entry.help put
+  about.popup
+} def
+
+
+% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+% Return width of 'about' entry.
+%
+% ( ) => ( width )
+%
+/panel.about.width {
+  "About" strsize pop
+} def
+
+
+% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+% Redraw panel entry.
+%
+% ( panel ) => ( )
+%
+/panel.about.update {
+  panel.text.moveto
+  "About" show
+} def
+
+
+% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+% Show 'about' box.
+%
+% ( ) ==> ( )
+%
+/about.popup {
+  window.dialog
+
+  dup .title "About" put
+  dup .text about.msg put
+  dup .buttons [
+    button.ok button.default actRedraw button.setaction
+  ] put
+  dup window.init
+      window.show
+} def
+
+
+% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+% Return 'about' text, if any.
+%
+% (  -- obj1 )
+%
+% obj1: string with message or .undef
+%
+/about.msg {
+
+  /about.msg
+    ptheme { "pabout.txt" } { "about.txt" } ifelse findfile dup .undef ne {
+      dup length string dup cvp rot dup length memcpy
+    } if
+  def
+
+  about.msg
+
+} def
+