First go at the new logviewer

shell/console/logviewer.py

@@ -0,0 +1,91 @@
+import gtk
+import hippo
+import gnomevfs
+from louie import dispatcher
+
+from sugar.graphics.roundbox import CanvasRoundBox
+
+class LogEntry(object):
+    def __init__(self, text):
+        self.text = text.strip()
+
+class LogModel(list):
+    def __init__(self, path):
+        self.path = path
+        self.position = 0
+
+        self.read_lines()
+        gnomevfs.monitor_add('file://' + self.path,
+                             gnomevfs.MONITOR_FILE,
+                             self._log_file_changed_cb)
+
+    def read_lines(self):
+        log_file = open(self.path, 'r')
+        log_file.seek(self.position)
+
+        for line in log_file.readlines():
+            self.add_line(line)
+
+        self.position = log_file.tell()
+        log_file.close()
+
+    def add_line(self, line):
+        entry = LogEntry(line)
+        self.append(entry)
+
+        dispatcher.send('entry-added', self, entry)
+
+    def _log_file_changed_cb(self, monitor_uri, info_uri, event):
+        if event == gnomevfs.MONITOR_EVENT_CHANGED:
+            self.read_lines()
+
+class LogView(hippo.Canvas):
+    def __init__(self, model):
+        hippo.Canvas.__init__(self)
+
+        self.model = model
+
+        scrollbars = hippo.CanvasScrollbars()
+        scrollbars.set_policy(hippo.ORIENTATION_HORIZONTAL,
+                              hippo.SCROLLBAR_NEVER)
+        widget = scrollbars.props.widget
+        widget.props.vadjustment.connect('changed', self._vadj_changed_cb)
+        self.set_root(scrollbars)
+
+        self.box = hippo.CanvasBox(spacing=5, padding=20)
+        scrollbars.set_root(self.box)
+
+        for entry_model in self.model:
+            self.add_entry(entry_model)
+
+        dispatcher.connect(self._entry_added_cb, 'entry-added', self.model)
+
+    def add_entry(self, entry_model):
+        entry_box = CanvasRoundBox(background_color=0xffffffff, padding=5)
+        self.box.append(entry_box)
+
+        entry = hippo.CanvasText(text=entry_model.text,
+                                 size_mode=hippo.CANVAS_SIZE_WRAP_WORD)
+        entry_box.append(entry)
+
+    def _entry_added_cb(self, entry):
+        self.add_entry(entry)
+
+    def _vadj_changed_cb(self, adj):
+        adj.props.value = adj.upper - adj.page_size
+
+if __name__ == "__main__":
+    import sys
+
+    window = gtk.Window()
+    window.set_default_size(800, 600)
+
+    model = LogModel(sys.argv[1])
+
+    log_view = LogView(model)
+    window.add(log_view)
+    log_view.show()
+
+    window.show()    
+
+    gtk.main()