228 lines
7.6 KiB
Python
228 lines
7.6 KiB
Python
# Copyright (C) 2007, One Laptop Per Child
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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from gettext import gettext as _
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import gtk
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import gobject
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import hippo
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import math
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from sugar.graphics import style
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from sugar.graphics.icon import Icon
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class Alert(gtk.EventBox, gobject.GObject):
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"""UI interface for Alerts
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Alerts are used inside the activity window instead of being a
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separate popup window. They do not hide canvas content. You can
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use add_alert(widget) and remove_alert(widget) inside your activity
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to add and remove the alert. You can set the position (bottom=-1,
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top=0,1) for alerts global for the window by changing alert_position,
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default is bottom.
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Properties:
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'title': the title of the alert,
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'message': the message of the alert,
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'icon': the icon that appears at the far left
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See __gproperties__
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"""
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__gtype_name__ = 'SugarAlert'
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__gsignals__ = {
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'response': (gobject.SIGNAL_RUN_FIRST,
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gobject.TYPE_NONE, ([object]))
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}
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__gproperties__ = {
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'title' : (str, None, None, None,
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gobject.PARAM_READWRITE),
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'msg' : (str, None, None, None,
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gobject.PARAM_READWRITE),
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'icon' : (object, None, None,
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gobject.PARAM_WRITABLE)
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}
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def __init__(self, **kwargs):
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gobject.GObject.__init__(self)
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self.set_visible_window(True)
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self._hbox = gtk.HBox()
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self._hbox.set_border_width(style.DEFAULT_SPACING)
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self._hbox.set_spacing(style.DEFAULT_SPACING)
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self.add(self._hbox)
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self._title = None
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self._msg = None
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self._icon = None
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self._buttons = {}
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self._msg_box = gtk.VBox()
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self._title_label = gtk.Label()
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self._title_label.set_alignment(0, 0.5)
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self._msg_box.pack_start(self._title_label, False)
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self._title_label.show()
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self._msg_label = gtk.Label()
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self._msg_label.set_alignment(0, 0.5)
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self._msg_box.pack_start(self._msg_label, False)
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self._hbox.pack_start(self._msg_box, False)
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self._msg_label.show()
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self._buttons_box = gtk.HButtonBox()
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self._buttons_box.set_layout(gtk.BUTTONBOX_END)
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self._buttons_box.set_spacing(style.DEFAULT_SPACING)
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self._hbox.pack_start(self._buttons_box)
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self._buttons_box.show()
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self._msg_box.show()
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self._hbox.show()
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self.show()
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def do_set_property(self, pspec, value):
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if pspec.name == 'title':
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if self._title != value:
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self._title = value
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self._title_label.set_markup("<b>" + self._title + "</b>")
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elif pspec.name == 'msg':
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if self._msg != value:
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self._msg = value
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self._msg_label.set_markup(self._msg)
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elif pspec.name == 'icon':
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if self._icon != value:
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self._icon = value
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self._hbox.pack_start(self._icon, False)
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self._hbox.reorder_child(self._icon, 0)
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def do_get_property(self, pspec):
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if pspec.name == 'title':
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return self._title
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elif pspec.name == 'msg':
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return self._msg
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def add_button(self, response_id, label, icon=None, position=-1):
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"""Add a button to the alert
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response_id: will be emitted with the response signal
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a response ID should one of the pre-defined
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GTK Response Type Constants or a positive number
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label: that will occure right to the buttom
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icon: this can be a SugarIcon or a gtk.Image
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position: the position of the button in the box (optional)
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"""
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button = gtk.Button()
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self._buttons[response_id] = button
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if icon is not None:
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button.set_image(icon)
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button.set_label(label)
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self._buttons_box.pack_start(button)
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button.show()
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button.connect('clicked', self.__button_clicked_cb, response_id)
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if position != -1:
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self._buttons_box.reorder_child(button, position)
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return button
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def remove_button(self, response_id):
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"""Remove a button from the alert by the given button id"""
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self._buttons_box.remove(self._buttons[id])
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def _response(self, id):
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"""Emitting response when we have a result
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A result can be that a user has clicked a button or
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a timeout has occured, the id identifies the button
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that has been clicked and -1 for a timeout
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"""
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self.emit('response', id)
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def __button_clicked_cb(self, button, response_id):
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self._response(response_id)
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class ConfirmationAlert(Alert):
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"""This is a ready-made two button (Cancel,Ok) alert"""
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def __init__(self, **kwargs):
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Alert.__init__(self, **kwargs)
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icon = Icon(icon_name='dialog-cancel')
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cancel_button = self.add_button(gtk.RESPONSE_CANCEL, _('Cancel'), icon)
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icon.show()
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icon = Icon(icon_name='dialog-ok')
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ok_button = self.add_button(gtk.RESPONSE_OK, _('Ok'), icon)
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icon.show()
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class _TimeoutIcon(hippo.CanvasText, hippo.CanvasItem):
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__gtype_name__ = 'AlertTimeoutIcon'
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def __init__(self, **kwargs):
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hippo.CanvasText.__init__(self, **kwargs)
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self.props.orientation = hippo.ORIENTATION_HORIZONTAL
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self.props.border_left = style.DEFAULT_SPACING
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self.props.border_right = style.DEFAULT_SPACING
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def do_paint_background(self, cr, damaged_box):
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[width, height] = self.get_allocation()
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x = width * 0.5
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y = height * 0.5
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radius = min(width * 0.5, height * 0.5)
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hippo.cairo_set_source_rgba32(cr, self.props.background_color)
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cr.arc(x, y, radius, 0, 2*math.pi)
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cr.fill_preserve()
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class TimeoutAlert(Alert):
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"""This is a ready-made two button (Cancel,Continue) alert
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It times out with a positive reponse after the given amount of seconds.
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"""
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def __init__(self, timeout=5, **kwargs):
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Alert.__init__(self, **kwargs)
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self._timeout = timeout
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icon = Icon(icon_name='dialog-cancel')
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cancel_button = self.add_button(gtk.RESPONSE_CANCEL, _('Cancel'), icon)
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icon.show()
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self._timeout_text = _TimeoutIcon(
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text=self._timeout,
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color=style.COLOR_BUTTON_GREY.get_int(),
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background_color=style.COLOR_WHITE.get_int())
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canvas = hippo.Canvas()
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canvas.set_root(self._timeout_text)
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canvas.show()
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self.add_button(gtk.RESPONSE_OK, _('Continue'), canvas)
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gobject.timeout_add(1000, self.__timeout)
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def __timeout(self):
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self._timeout -= 1
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self._timeout_text.props.text = self._timeout
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if self._timeout == 0:
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self._response(gtk.RESPONSE_OK)
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return False
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return True
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