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-rw-r--r--cordarrows-plugin.tcl16
1 files changed, 16 insertions, 0 deletions
diff --git a/cordarrows-plugin.tcl b/cordarrows-plugin.tcl
new file mode 100644
index 0000000..abf71ef
--- /dev/null
+++ b/cordarrows-plugin.tcl
@@ -0,0 +1,16 @@
+# this plugin adds arrowheads to the ends of cords when in editmode in
+# order to show the direction that the messages are flowing
+
+proc add_arrows_to_cords {mytoplevel} {
+ if { ! [winfo exists $mytoplevel] } {return}
+ if {$mytoplevel eq ".pdwindow"} {return}
+ set tkcanvas [tkcanvas_name $mytoplevel]
+ if {$::editmode($mytoplevel) == 1} {
+ $tkcanvas itemconfigure cord -arrow last
+ } else {
+ $tkcanvas itemconfigure cord -arrow none
+ }
+}
+
+
+bind all <<EditMode>> {+add_arrows_to_cords %W}