# Physics, a 2D Physics Playground for Kids
# Copyright (C) 2008 Alex Levenson and Brian Jordan
# Copyright (C) 2012 Daniel Francis
# Copyright (C) 2012-13 Walter Bender
# Copyright (C) 2013 Sai Vineet
# Copyright (C) 2012-13 Sugar Labs
# 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 3 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, see .
import os
import gtk
import csv
import tempfile
import json
from gettext import gettext as _
import logging
import pygame
import sugargame
import sugargame.canvas
from sugar.activity import activity
from sugar.activity.widgets import ActivityToolbarButton
from sugar.activity.widgets import StopButton
from sugar.graphics.radiotoolbutton import RadioToolButton
from sugar.graphics.toolbutton import ToolButton
from sugar.graphics.alert import ConfirmationAlert
from sugar.graphics.toolbarbox import ToolbarBox
from sugar.graphics.toolbarbox import ToolbarButton
from sugar.graphics.style import GRID_CELL_SIZE
from sugar.datastore import datastore
import tools
import physics
class PhysicsActivity(activity.Activity):
def __init__(self, handle):
super(PhysicsActivity, self).__init__(handle)
self.metadata['mime_type'] = 'application/x-physics-activity'
self.add_events(gtk.gdk.ALL_EVENTS_MASK |
gtk.gdk.VISIBILITY_NOTIFY_MASK)
self.connect('visibility-notify-event', self._focus_event)
self.connect('window-state-event', self._window_event)
self._canvas = sugargame.canvas.PygameCanvas(self)
self.game = physics.main(self)
self.preview = None
self.build_toolbar()
self.set_canvas(self._canvas)
gtk.gdk.screen_get_default().connect('size-changed',
self.__configure_cb)
logging.debug(os.path.join(
activity.get_activity_root(), 'data', 'data'))
self._canvas.run_pygame(self.game.run)
def __configure_cb(self, event):
''' Screen size has changed '''
self.write_file(os.path.join(
activity.get_activity_root(), 'data', 'data'))
pygame.display.set_mode((gtk.gdk.screen_width(),
gtk.gdk.screen_height() - 2 * GRID_CELL_SIZE),
pygame.RESIZABLE)
self.read_file(os.path.join(
activity.get_activity_root(), 'data', 'data'))
self.game.run(True)
def read_file(self, file_path):
self.game.read_file(file_path)
def write_file(self, file_path):
self.game.write_file(file_path)
def get_preview(self):
""" Custom preview code to get image from pygame. """
if self.preview:
return self.preview
surface = pygame.display.get_surface()
width, height = surface.get_width(), surface.get_height()
pixbuf = gtk.gdk.pixbuf_new_from_data(pygame.image.tostring(surface,
"RGB"),
gtk.gdk.COLORSPACE_RGB, 0, 8,
width, height,
3 * width)
pixbuf = pixbuf.scale_simple(300, 225, gtk.gdk.INTERP_BILINEAR)
preview_data = []
def save_func(buf, data):
data.append(buf)
pixbuf.save_to_callback(save_func, 'png', user_data=preview_data)
preview_data = ''.join(preview_data)
return preview_data
def build_toolbar(self):
self.max_participants = 1
toolbar_box = ToolbarBox()
activity_button = ActivityToolbarButton(self)
toolbar_box.toolbar.insert(activity_button, 0)
activity_button.show()
create_toolbar = ToolbarButton()
create_toolbar.props.page = gtk.Toolbar()
create_toolbar.props.icon_name = 'magicpen'
create_toolbar.props.label = _('Create')
toolbar_box.toolbar.insert(create_toolbar, -1)
self._insert_create_tools(create_toolbar)
self._insert_stop_play_button(toolbar_box.toolbar)
separator = gtk.SeparatorToolItem()
toolbar_box.toolbar.insert(separator, -1)
separator.show()
clear_trace = ToolButton("clear-trace")
clear_trace.set_tooltip(_("Clear Trace Marks"))
clear_trace.set_accelerator(_("x"))
clear_trace.connect("clicked", self.clear_trace_cb)
clear_trace.set_sensitive(False)
toolbar_box.toolbar.insert(clear_trace, -1)
clear_trace.show()
self.clear_trace = clear_trace
self._insert_clear_all_button(toolbar_box.toolbar)
separator = gtk.SeparatorToolItem()
separator.props.draw = False
separator.set_size_request(0, -1)
separator.set_expand(True)
toolbar_box.toolbar.insert(separator, -1)
separator.show()
stop = StopButton(self)
toolbar_box.toolbar.insert(stop, -1)
stop.show()
separator = gtk.SeparatorToolItem()
activity_button.props.page.insert(separator, -1)
separator.show()
export_json = ToolButton("save-as-json")
export_json.set_tooltip(_("Export tracked objects to journal"))
export_json.connect('clicked', self._export_json_cb)
activity_button.props.page.insert(export_json, -1)
export_json.show()
export_csv = ToolButton("save-as-csv")
export_csv.set_tooltip(_("Export tracked objects to journal"))
export_csv.connect('clicked', self._export_csv_cb)
activity_button.props.page.insert(export_csv, -1)
export_csv.show()
self.set_toolbar_box(toolbar_box)
toolbar_box.show_all()
create_toolbar.set_expanded(True)
return toolbar_box
def can_close(self):
self.preview = self.get_preview()
self.game.loop = False
return True
def _insert_stop_play_button(self, toolbar):
self.stop_play_state = True
self.stop_play = ToolButton('media-playback-stop')
self.stop_play.set_tooltip(_("Stop"))
self.stop_play.set_accelerator(_('space'))
self.stop_play.connect('clicked', self.stop_play_cb)
toolbar.insert(self.stop_play, -1)
self.stop_play.show()
def _insert_clear_all_button(self, toolbar):
self.clear_all = ToolButton('clear_all')
self.clear_all.set_tooltip(_("Erase All"))
self.clear_all.set_accelerator(_('a'))
self.clear_all.connect('clicked', self.clear_all_cb)
toolbar.insert(self.clear_all, -1)
self.clear_all.set_sensitive(False)
self.clear_all.show()
def _insert_create_tools(self, create_toolbar):
def _insert_item(toolbar, item, pos=-1):
if hasattr(toolbar, 'insert'):
toolbar.insert(item, pos)
else:
toolbar.props.page.insert(item, pos)
# Make + add the component buttons
self.radioList = {}
firstButton = None
for c in tools.allTools:
button = RadioToolButton(named_icon=c.icon)
if firstButton:
button.set_group(firstButton)
else:
button.set_group(None)
firstButton = button
if c.name == tools.EraseAllTool.name:
# Add a separator - Erase all tool is a dangerous tool
separator = gtk.SeparatorToolItem()
_insert_item(create_toolbar, separator, -1)
separator.show()
button.set_tooltip(c.toolTip)
button.set_accelerator(c.toolAccelerator)
button.connect('clicked', self.radioClicked)
_insert_item(create_toolbar, button, -1)
button.show()
self.radioList[button] = c.name
def clear_trace_alert_cb(self, alert, response):
self.remove_alert(alert)
if response is gtk.RESPONSE_OK:
self.game.full_pos_list = [[] for _ in self.game.full_pos_list]
self.game.tracked_bodies = 0
def clear_trace_cb(self, button):
clear_trace_alert = ConfirmationAlert()
clear_trace_alert.props.title = _('Are You Sure?')
clear_trace_alert.props.msg = \
_('All trace points will be erased. This cannot be undone!')
clear_trace_alert.connect('response', self.clear_trace_alert_cb)
self.add_alert(clear_trace_alert)
def stop_play_cb(self, button):
pygame.event.post(pygame.event.Event(pygame.USEREVENT,
action="stop_start_toggle"))
self.stop_play_state = not self.stop_play_state
if self.stop_play_state:
self.stop_play.set_icon('media-playback-stop')
self.stop_play.set_tooltip(_("Stop"))
else:
self.stop_play.set_icon('media-playback-start')
self.stop_play.set_tooltip(_("Start"))
def clear_all_cb(self, button):
def clear_all_alert_cb(alert, response_id):
self.remove_alert(alert)
if response_id is gtk.RESPONSE_OK:
pygame.event.post(pygame.event.Event(pygame.USEREVENT,
action="clear_all"))
clear_all_alert = ConfirmationAlert()
clear_all_alert.props.title = _('Are You Sure?')
clear_all_alert.props.msg = \
_('All your work will be discarded. This cannot be undone!')
clear_all_alert.connect('response', clear_all_alert_cb)
self.add_alert(clear_all_alert)
def radioClicked(self, button):
pygame.event.post(pygame.event.Event(pygame.USEREVENT,
action=self.radioList[button]))
def _focus_event(self, event, data=None):
""" Send focus events to pygame to allow it to idle when in
background. """
if not self.game.pygame_started:
logging.debug('focus_event: pygame not yet initialized')
return
if data.state == gtk.gdk.VISIBILITY_FULLY_OBSCURED:
pygame.event.post(pygame.event.Event(pygame.USEREVENT,
action="focus_out"))
else:
self.game.show_fake_cursor = True
pygame.event.post(pygame.event.Event(pygame.USEREVENT,
action="focus_in"))
def _export_json_cb(self, button):
jobject = datastore.create()
jobject.metadata['title'] = _("Physics export")
jobject.metadata['mime_type'] = "text/plain"
tmp_dir = os.path.join(self.get_activity_root(), 'instance')
fd, file_path = tempfile.mkstemp(dir=tmp_dir)
os.close(fd)
data = self.game.full_pos_list
jsonfile = open(file_path, "wb")
jsonfile.write(json.dumps(data))
jsonfile.close()
jobject.set_file_path(os.path.abspath(jsonfile.name))
datastore.write(jobject)
def _export_csv_cb(self, button):
jobject = datastore.create()
jobject.metadata['title'] = _("Physics export")
jobject.metadata['mime_type'] = "text/csv"
tmp_dir = os.path.join(self.get_activity_root(), 'instance')
fd, file_path = tempfile.mkstemp(dir=tmp_dir)
os.close(fd)
data = self.game.full_pos_list
csvfile = open(file_path, "wb")
writer = csv.writer(csvfile)
writer.writerows(data)
csvfile.close()
jobject.set_file_path(os.path.abspath(csvfile.name))
datastore.write(jobject)
def _window_event(self, window, event):
""" Send focus out event to pygame when switching to a desktop
view. """
if event.changed_mask & gtk.gdk.WINDOW_STATE_ICONIFIED:
pygame.event.post(pygame.event.Event(pygame.USEREVENT,
action="focus_out"))