1 files changed, 90 insertions, 0 deletions
diff --git a/src/view/pulsingicon.py b/src/view/pulsingicon.py
new file mode 100644
index 0000000..9e7b3d9
--- /dev/null
+++ b/src/view/pulsingicon.py
@@ -0,0 +1,90 @@
+# Copyright (C) 2006-2007 Red Hat, Inc.
+#
+# 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+import gobject
+
+from sugar.graphics.icon import CanvasIcon
+
+class PulsingIcon(CanvasIcon):
+    __gproperties__ = {
+        'paused'     : (bool, None, None, False,
+                        gobject.PARAM_READWRITE),
+        'colors'     : (object, None, None,
+                        gobject.PARAM_READWRITE),
+        'pulse-time' : (float, None, None,
+                        0.0, 500.0, 0.0,
+                        gobject.PARAM_READWRITE),
+    }
+
+    def __init__(self, **kwargs):
+        self._paused = False
+        self._pulse_time = 0.0
+        self._colors = None
+        self._pulse_sid = 0
+        self._pos = 0
+
+        CanvasIcon.__init__(self, **kwargs)
+
+    def do_set_property(self, pspec, value):
+        CanvasIcon.do_set_property(self, pspec, value)
+
+        if pspec.name == 'pulse-time':
+            self._pulse_time = value
+            self._stop()
+            if not self._paused and self._pulse_time > 0.0:
+                self._start()
+        elif pspec.name == 'colors':
+            self._colors = value
+            self._pos = 0
+            self._update_colors()
+        elif pspec.name == 'paused':
+            self._paused = value
+            if not self._paused and self._pulse_time > 0.0:
+                self._start()
+            else:
+                self._stop()
+
+    def do_get_property(self, pspec):
+        CanvasIcon.do_get_property(self, pspec)
+
+        if pspec.name == 'pulse-time':
+            return self._pulse_time
+        elif pspec.name == 'colors':
+            return self._colors
+
+    def _update_colors(self):
+        self.props.stroke_color = self._colors[self._pos][0]
+        self.props.fill_color = self._colors[self._pos][1]
+
+    def _pulse_timeout(self):
+        if self._colors:
+            self._update_colors()
+
+        self._pos += 1
+        if self._pos == len(self._colors):
+            self._pos = 0
+
+        return True
+
+    def _start(self):
+        if self._pulse_sid == 0:
+            self._pulse_sid = gobject.timeout_add(
+                    int(self._pulse_time * 1000), self._pulse_timeout)
+
+    def _stop(self):
+        if self._pulse_sid:
+            gobject.source_remove(self._pulse_sid)
+            self._pulse_sid = 0