From 0c3f127c86af818d260966d2292b199757087157 Mon Sep 17 00:00:00 2001
From: Simon Poirier <simpoir@gmail.com>
Date: Sat, 11 Jul 2009 21:39:46 +0000
Subject: repackage

---
(limited to 'tutorius/textbubble.py')

diff --git a/tutorius/textbubble.py b/tutorius/textbubble.py
new file mode 100644
index 0000000..e09b298
--- /dev/null
+++ b/tutorius/textbubble.py
@@ -0,0 +1,109 @@
+# Copyright (C) 2009, Tutorius.org
+#
+# 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
+"""
+This module represents TextBubble widget. Also, it aims to be a short example
+of drawing with Cairo.
+"""
+
+import gtk
+from math import pi as M_PI
+import cairo
+
+# FIXME set as subclass of gtk.Widget, not EventBox
+class TextBubble(gtk.EventBox):
+    def __init__(self, label):
+        gtk.EventBox.__init__(self)
+
+        ##self.set_app_paintable(True) # else may be blank
+         # FIXME ensure previous call does not interfere with widget stacking
+        self.label = label
+        self.lineWidth = 5
+
+        self.connect("expose-event", self._on_expose)
+
+    def __draw_with_cairo__(self, context):
+        """
+
+        """
+        pass
+
+    def _on_expose(self, widget, event):
+        """Redraw event callback."""
+        # TODO
+        ctx = self.window.cairo_create()
+
+        # set drawing region. Useless since this widget has its own window.
+        ##region = gtk.gdk.region_rectangle(self.allocation)
+        ##region.intersect(gtk.gdk.region_rectangle(event.area))
+        ##ctx.region(region)
+        ##ctx.rectangle(event.area.x, event.area.y, event.area.width, event.area.height)
+        ##ctx.clip()
+
+        ##import pdb; pdb.set_trace()
+        ##ctx.set_operator(cairo.OPERATOR_CLEAR)
+        ##ctx.paint()
+        ##ctx.set_operator(cairo.OPERATOR_OVER)
+
+        width = self.allocation.width
+        height = self.allocation.height
+        xradius = width/2
+        yradius = height/2
+        width -= self.lineWidth
+        height -= self.lineWidth
+        ctx.move_to(self.lineWidth, yradius)
+        ctx.curve_to(self.lineWidth, self.lineWidth,
+            self.lineWidth, self.lineWidth, xradius, self.lineWidth)
+        ctx.curve_to(width, self.lineWidth,
+            width, self.lineWidth, width, yradius)
+        ctx.curve_to(width, height, width, height, xradius, height)
+        ctx.curve_to(self.lineWidth, height,
+            self.lineWidth, height, self.lineWidth, yradius)
+        ctx.set_source_rgb(1.0, 1.0, 1.0)
+        ctx.fill_preserve()
+        ctx.set_line_width(self.lineWidth)
+        ctx.set_source_rgb(0.0, 0.0, 0.0)
+        ctx.stroke()
+
+        _, _, textWidth, textHeight, _, _ = ctx.text_extents(self._label)
+        ctx.move_to(int((self.allocation.width-textWidth)/2),
+            int((self.allocation.height+textHeight)/2))
+        ctx.text_path(self._label)
+        ctx.fill()
+
+        return True
+
+
+    def _set_label(self, value):
+        """Sets the label and flags the widget to be redrawn."""
+        self._label = value
+        # FIXME hack to calculate size. necessary because may not have been
+        # realized
+        surf = cairo.SVGSurface("/dev/null", 0, 0)
+        ctx = cairo.Context(surf)
+        _, _, width, height, _, _ = ctx.text_extents(self._label)
+        del ctx, surf
+
+        # FIXME bogus values follows
+        self.set_size_request(int(width+20), int(height+40))
+        # TODO test changing a realized label
+
+    def _get_label(self):
+        """Getter method for the label property"""
+        return self._label
+
+    label = property(fget=_get_label, fset=_set_label,\
+        doc="Text label which is to be painted on the top of the widget")
+
--
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