# Copyright 2009 Simon Schampijer
# Copyright 2015 James Cameron <quozl@laptop.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

"""

HelloWorld Activity: A case study for developing an activity.

With Icon stress test.

"""

from gi.repository import Gtk
from gi.repository import GObject

import logging

from gettext import gettext as _

from sugar3.activity import activity
from sugar3.graphics.toolbarbox import ToolbarBox
from sugar3.activity.widgets import ActivityButton
from sugar3.activity.widgets import TitleEntry
from sugar3.activity.widgets import StopButton
from sugar3.activity.widgets import ShareButton
from sugar3.activity.widgets import DescriptionItem
from sugar3.graphics.icon import Icon
from sugar3.graphics import style

class HelloWorldActivity(activity.Activity):
    """HelloWorldActivity class as specified in activity.info"""

    def __init__(self, handle):
        """Set up the HelloWorld activity."""
        activity.Activity.__init__(self, handle)

        # we do not have collaboration features
        # make the share option insensitive
        self.max_participants = 1

        # toolbar with the new toolbar redesign
        toolbar_box = ToolbarBox()

        activity_button = ActivityButton(self)
        toolbar_box.toolbar.insert(activity_button, 0)
        activity_button.show()

        title_entry = TitleEntry(self)
        toolbar_box.toolbar.insert(title_entry, -1)
        title_entry.show()

        description_item = DescriptionItem(self)
        toolbar_box.toolbar.insert(description_item, -1)
        description_item.show()

        share_button = ShareButton(self)
        toolbar_box.toolbar.insert(share_button, -1)
        share_button.show()
        
        separator = Gtk.SeparatorToolItem()
        separator.props.draw = False
        separator.set_expand(True)
        toolbar_box.toolbar.insert(separator, -1)
        separator.show()

        stop_button = StopButton(self)
        toolbar_box.toolbar.insert(stop_button, -1)
        stop_button.show()

        self.set_toolbar_box(toolbar_box)
        toolbar_box.show()

        # growing and shrinking icon
        M = 15   # maximum size, as a multiplier of standard size
        N = 40   # number of icons
        self._size = 0
        self._sizes = []
        for i in range(N):
            size = int(style.STANDARD_ICON_SIZE * float(i) * M / N) + 1
            self._sizes.append(size)
        self._increment = 1

        self._update()
        GObject.timeout_add(50, self.__timeout_cb)

    def _update(self):
        self._icon = Icon(icon_name='computer-xo',
                          pixel_size=self._sizes[self._size])
        self.set_canvas(self._icon)
        self._icon.show()

    def __timeout_cb(self):
        self._size += self._increment
        if self._increment > 0:
            if self._size == len(self._sizes) - 1:
                self._increment = - self._increment
        else:
            if self._size == 0:
                self._increment = - self._increment

        self._update()
        return True