merged recent changes into package branch again

1 files changed, 42 insertions, 0 deletions

diff --git a/asciifarm/client/display/messagepad.py b/asciifarm/client/display/messagepad.py
new file mode 100644
index 0000000..50d34f5
--- /dev/null
+++ b/asciifarm/client/display/messagepad.py
@@ -0,0 +1,42 @@
+
+import curses
+import textwrap
+
+class MessagePad:
+    
+    def __init__(self, maxLines=10):
+        self.maxLines = maxLines
+        self.pad = curses.newpad(maxLines+2, 200)
+        self.changed = False
+        self.lastView = None
+        self.messages = []
+    
+    def addMessage(self, message):
+        self.messages.append(message)
+        self.changed = True
+    
+    def getHeight(self):
+        return min(len(self.messages), self.maxLines)
+    
+    def update(self, screen, x, y, xmax, ymax):
+        if not self.changed and (x, y, xmax, ymax) == self.lastView :
+            return
+        width = xmax - x
+        height = ymax - y # should equal self.getHeight()
+        if height < 1:
+            return
+        lines = []
+        for message in self.messages:
+            lines += textwrap.wrap(message, width)
+        if len(lines) > height:
+            lines = lines[len(lines)-height:]
+        self.pad.erase()
+        self.pad.addstr(0,0,'\n'.join(lines))
+        self.changed = False
+        self.pad.noutrefresh(
+            0,
+            0,
+            y,
+            x,
+            ymax-1,
+            xmax-1)