Added Button control.

1 files changed, 127 insertions, 0 deletions

diff --git a/sugar/graphics/button.py b/sugar/graphics/button.py
new file mode 100644
index 0000000..ed35431
--- /dev/null
+++ b/sugar/graphics/button.py
@@ -0,0 +1,127 @@
+# Copyright (C) 2007, One Laptop Per Child
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+import sys
+
+import gobject
+import hippo
+
+from sugar.graphics.canvasicon import CanvasIcon
+from sugar.graphics.roundbox import RoundBox
+from sugar.graphics import units
+from sugar.graphics import color
+from sugar.graphics import font
+
+class Button(hippo.CanvasBox, hippo.CanvasItem):
+    __gtype_name__ = 'SugarButton'
+
+    __gproperties__ = {
+        'active'    : (bool, None, None, True,
+                       gobject.PARAM_READWRITE),
+        'icon-name' : (str, None, None, None,
+                       gobject.PARAM_READWRITE),
+        'text'      : (str, None, None, None,
+                       gobject.PARAM_READWRITE)
+    }
+
+    def __init__(self, **kwargs):
+        self._active = True
+        self._icon = None
+
+        self._round_box = RoundBox()
+        self._round_box.props.border_color = 0
+        self._round_box.props.background_color = color.BLACK.get_int()
+        
+        self._text_box = hippo.CanvasText()
+        self._text_box.props.font_desc = font.DEFAULT.get_pango_desc()
+        self._text_box.props.color = color.BUTTON_NORMAL.get_int()
+        self._round_box.append(self._text_box)
+        
+        hippo.CanvasBox.__init__(self, **kwargs)
+        self.props.yalign = hippo.ALIGNMENT_CENTER
+
+        self.append(self._round_box)
+
+        if not self.props.color:
+            self.props.color = color.BUTTON_NORMAL.get_int()
+        if not self.props.color:
+            self.props.background_color = \
+                color.BUTTON_BACKGROUND_NORMAL.get_int()
+
+        self._normal_color = self.props.color
+        self._normal_background_color = self.props.background_color
+        
+        self.connect('button-press-event',
+                     self._button_button_press_event_cb)
+
+    def do_set_property(self, pspec, value):
+        if pspec.name == 'active':
+            self._active = value
+            if self._active:
+                self.props.color = self._normal_color
+                self.props.background_color = self._normal_background_color
+            else:
+                self.props.color = color.BUTTON_INACTIVE.get_int()
+                self.props.background_color = \
+                    color.BUTTON_BACKGROUND_INACTIVE.get_int()
+        elif pspec.name == 'icon-name':
+            if value:
+                if self._icon:
+                    self._icon.props.icon_name = value
+                else:
+                    self._icon = CanvasIcon(icon_name=value,
+                                            scale=units.SMALL_ICON_SCALE,
+                                            fill_color=color.WHITE,
+                                            stroke_color=color.BLACK)
+                    # Insert icon on the label's left
+                    self._round_box.remove_all()
+                    self._round_box.append(self._icon)
+                    self._round_box.append(self._text_box)
+            else:
+                if self._icon:
+                    self._round_box.remove(self._icon)
+                    self._icon = None
+        elif pspec.name == 'text':
+            self._text_box.props.text = value
+        else:
+            hippo.CanvasBox.do_set_property(self, pspec, value)
+
+    def do_get_property(self, pspec):
+        if pspec.name == 'active':
+            return self._active
+        elif pspec.name == 'icon-name':
+            if self._icon:
+                return self._icon.props.icon_name
+            else:
+                return None
+        elif pspec.name == 'text':
+            return self._text_box.props.text
+        else:
+            return hippo.CanvasBox.do_get_property(self, pspec)
+
+    def _button_button_press_event_cb(self, widget, event):
+        if self._active:
+            self.emit_activated()
+        return True
+
+    def prelight(self, enter):
+        if enter:
+            if self._active:
+                self.props.background_color = color.BLACK.get_int()
+        else:
+            if self._active:
+                self.props.background_color = self._normal_background_color