1 files changed, 69 insertions, 0 deletions
diff --git a/timer-applet/src/timerapplet/ui/PulseButton.py b/timer-applet/src/timerapplet/ui/PulseButton.py
new file mode 100644
index 00000000..8a9fe48c
--- /dev/null
+++ b/timer-applet/src/timerapplet/ui/PulseButton.py
@@ -0,0 +1,69 @@
+# Copyright (C) 2008 Jimmy Do <[email protected]>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+import math
+import time
+import gobject
+import gtk
+
+class PulseButton(gtk.Button):
+    def __init__(self):
+        super(PulseButton, self).__init__()
+        
+        self._anim_period_seconds = 0.7
+        self._start_time = 0.0
+        self._factor = 0.0
+        
+    def start_pulsing(self):
+        self._start_time = time.time()
+        gobject.timeout_add(10, self._on_timeout)
+        
+    def stop_pulsing(self):
+        self._start_time = 0
+        
+    def _on_timeout(self, data=None):
+        if self._start_time <= 0.0:
+            return False
+        if self.window != None:
+            delta = time.time() - self._start_time
+            
+            if delta > self._anim_period_seconds:
+                delta = self._anim_period_seconds
+                self._start_time = time.time()
+            fraction = delta/self._anim_period_seconds
+            self._factor = math.sin(fraction * math.pi)
+            
+        self.window.invalidate_rect(self.allocation, True)
+        return True
+    
+    def do_expose_event(self, event):
+        gtk.Button.do_expose_event(self, event)
+        if self._start_time > 0:
+            context = event.window.cairo_create()
+            context.rectangle(0, 0, self.allocation.width, self.allocation.height)
+            
+            #color = self.style.bg[gtk.STATE_SELECTED]
+            #color = gtk.gdk.Color(65535, 65535, 65535)
+            color = gtk.gdk.Color(0, 0, 0)
+            red = color.red / 65535.0
+            green = color.green / 65535.0
+            blue = color.blue / 65535.0
+            context.set_source_rgba(red, green, blue, self._factor * 0.8)
+            context.fill()
+        
+        return False
+
+gobject.type_register(PulseButton)