[chirp_devel] [PATCH] [RFC] Offset calculator

[Dan Smith]

# HG changeset patch
# User Dan Smith <dsmith at danplanet.com>
# Date 1337798425 25200
# Node ID de06d87191f171bd87cdd9d04693e0fdcd960728
# Parent  51a0d9490ced8d3b24ec13a0ed572233185c3560
[RFC] Offset calculator

This allows users of radios with only an offset field to calculate the
required offset from a given TX frequency. This is accessed by right-
clicking on the memory and choosing "Calculate Offset...". Probably need
some better verbiage, but this shows the functionality enough for
comments.

diff -r 51a0d9490ced -r de06d87191f1 chirpui/memedit.py
--- a/chirpui/memedit.py	Tue May 22 16:41:27 2012 -0700
+++ b/chirpui/memedit.py	Wed May 23 11:40:25 2012 -0700
@@ -58,6 +58,34 @@
         return None
     return store.get_iter((row - 1,))
 
+def prompt_for_tx_frequency(txfreq):
+    d = gtk.Dialog(title=_("Offset"),
+                   buttons=(gtk.STOCK_OK, gtk.RESPONSE_OK,
+                            gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL))
+
+    l = gtk.Label(_("Desired TX frequency:"))
+    l.show()
+    d.vbox.pack_start(l, 0, 0, 0)
+
+    f = gtk.Entry()
+    f.set_text(chirp_common.format_freq(txfreq))
+    f.show()
+    d.vbox.pack_start(f, 0, 0, 0)
+
+    freq = None
+    while True:
+        r = d.run()
+        if r != gtk.RESPONSE_OK:
+            break
+        try:
+            freq = chirp_common.parse_freq(f.get_text())
+            break
+        except ValueError:
+            pass
+
+    d.destroy()
+    return freq
+
 class MemoryEditor(common.Editor):
     cols = [
         (_("Loc")       , TYPE_INT,     gtk.CellRendererText,  ),
@@ -624,6 +652,28 @@
             self.emit("changed")
         dlg.destroy()
 
+    def _calc_offset(self, iter):
+        mem = self._get_memory(iter)
+        rxfreq = mem.freq
+        if mem.duplex:
+            txfreq = mem.freq + (int("%s1" % mem.duplex) * mem.offset)
+        else:
+            txfreq = mem.freq
+        txfreq = prompt_for_tx_frequency(txfreq)
+        if txfreq is None:
+            return
+
+        if rxfreq == txfreq:
+            mem.duplex = ""
+            mem.offset = 0
+        else:
+            mem.duplex = txfreq < rxfreq and "-" or "+"
+            mem.offset = abs(txfreq - rxfreq)
+
+        self._set_memory(iter, mem)
+        job = common.RadioJob(None, "set_memory", mem)
+        self.rthread.submit(job)
+
     def mh(self, _action, store, paths):
         action = _action.get_name()
         iter = store.get_iter(paths[0])
@@ -663,7 +713,8 @@
         elif action == "edit":
             job = common.RadioJob(self.edit_memory, "get_memory", cur_pos)
             self.rthread.submit(job)
-
+        elif action == "calcoffset":
+            self._calc_offset(iter)
         if changed:
             self.emit("changed")
 
@@ -688,6 +739,7 @@
 <ui>
   <popup name="Menu"> 
     <menuitem action="edit"/>
+    <menuitem action="calcoffset"/>
     <menuitem action="insert_prev"/>
     <menuitem action="insert_next"/>
     <menuitem action="delete"/>
@@ -711,6 +763,7 @@
 
         actions = [
             ("edit", _("Edit")),
+            ("calcoffset", _("Calculate offset for TX frequency")),
             ("insert_prev", _("Insert row above")),
             ("insert_next", _("Insert row below")),
             ("delete", issingle and _("Delete") or _("Delete all")),