1 files changed, 68 insertions, 0 deletions
diff --git a/ka_incoming.py b/ka_incoming.py
new file mode 100644
index 0000000..a97dbc4
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+++ b/ka_incoming.py
@@ -0,0 +1,68 @@
+# coding: UTF8
+# Copyright 2009 Thomas Jourdan
+#
+# 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 3 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 ka_debug
+
+class KandidIncoming(object):
+    """
+    inv: 0 <= len(self.incoming) <= self.capacity
+    inv: self.capacity > 0
+    """
+
+    def __init__(self, capacity):
+        self.capacity = capacity
+        self.incoming = []
+ 
+    def append_protozoon(self, incoming_protozoon):
+        """ Append protozoon from incoming list and manage capacity.
+        pre: incoming_protozoon is not None
+        """
+        ka_debug.info('Append protozoon')
+        while len(self.incoming) >= self.capacity:
+            self.incoming[0:1] = []
+        self.incoming.append(incoming_protozoon)
+
+    def accept_protozoon(self, model, index):
+        """ Move protozoon from incoming list to image population.
+        pre: 0 <= index < self.capacity
+        """
+        new_at = -1
+        if index < len(self.incoming):
+            ka_debug.info('accept incoming protozoon %u' % index)
+            new_at = model.replace(self.incoming[index])
+            self.incoming[index:1] = []
+        return new_at
+
+    def decline_protozoon(self, index):
+        """ Remove protozoon from incoming list
+        pre: 0 <= index < self.capacity
+        """
+        if index < len(self.incoming):
+            ka_debug.info('decline incoming protozoon %u' % index)
+            self.incoming[index:1] = []
+
+    def draw(self, index, ctx, width, height):
+        """ Repaint all protozoon images inside incoming area.
+        pre: 0 <= index < self.capacity
+        pre: ctx is not None
+        pre: width > 0
+        pre: height > 0
+        """
+        if index < len(self.incoming):
+            # draw protozoon 
+            self.incoming[index].draw(ctx, width, height)
+