From bb6896e0bac8e94785b98470a6c75c79dcb535cb Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop+git@gmail.com>
Date: Thu, 7 Jul 2011 15:52:09 -0400
Subject: [PATCH] flash window according to "flash_rate" conf param when unread
 count > 0

---
 Window.py | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/Window.py b/Window.py
index 9ce3b90..02d3b21 100755
--- a/Window.py
+++ b/Window.py
@@ -2,6 +2,8 @@
 import gtk
 import gobject
 import imaplib
+import math
+from datetime import datetime, timedelta
 
 class Window(object):
     def __init__(self, title, conf):
@@ -11,6 +13,7 @@ class Window(object):
         self.fgcolor = ''.join(map(lambda x: '%02x' % int(0xFF * x),
                 self.conf['fgcolor']))
         self.font_sz = 1024 * self.conf['font_size']
+        self.flash_rate = 0
 
         if not 'width' in self.conf:
             self.conf['width'] = 32
@@ -24,6 +27,10 @@ class Window(object):
             self.conf['fgcolor'] = (0.0, 0.0, 0.0)
         if not 'bgcolor' in self.conf:
             self.conf['bgcolor'] = (1.0, 0.5, 0.0)
+        if not 'bgcolor2' in self.conf:
+            self.conf['bgcolor2'] = (1.0, 1.0, 1.0)
+        if 'flash_rate' in self.conf:
+            self.flash_rate = self.conf['flash_rate']
         if not 'font_size' in self.conf:
             self.conf['font_size'] = 18
         sticky = True
@@ -88,7 +95,11 @@ class Window(object):
             try:
                 self.connection.select(self.conf['mailbox'])
                 msgs = self.connection.search(None, 'UnSeen')[1][0].split()
+                old_count = self.count
                 self.count = len(msgs)
+                if self.flash_rate > 0 and old_count == 0 and self.count > 0:
+                    self.flash_start_dt = datetime.now()
+                    gobject.timeout_add(100, self.do_flash)
             except:
                 self.connection = None
         self.update_count()
@@ -103,6 +114,22 @@ class Window(object):
                         'font_size="%d">%d</span>'
                         % (self.fgcolor, self.font_sz, self.count)))
 
+    def do_flash(self):
+        if self.count > 0:
+            delta = datetime.now() - self.flash_start_dt
+            delta_msec = delta.seconds * 1000 + delta.microseconds / 1000
+            period = delta_msec / float(self.flash_rate)
+            mix = (math.sin(math.pi * 2 * period) + 1.0) / 2.0
+        else:
+            mix = 0
+        linear_combination = lambda (x, y): x + (y - x) * mix
+        bg1 = self.conf['bgcolor']
+        bg2 = self.conf['bgcolor2']
+        flash_bgcolor = map(linear_combination, zip(bg1, bg2))
+        self.viewport.modify_bg(gtk.STATE_NORMAL,
+                gtk.gdk.Color(*map(lambda x: int(65535 * x), flash_bgcolor)))
+        return self.count > 0
+
     def destroy_event(self):
         self.disconnect()
         self.update_conf()