"""
Physics, a 2D Physics Playground for Kids
Copyright (C) 2008 Alex Levenson and Brian Jordan
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 tools
import sugargame
import sugargame.canvas
import pygame
from sugar.graphics.radiotoolbutton import RadioToolButton
from sugar.graphics.toolbutton import ToolButton
from sugar.activity import activity
from gettext import gettext as _
import gtk
import physics
try:
# >= 0.86 toolbars
from sugar.graphics.toolbarbox import ToolbarBox
from sugar.activity.widgets import ActivityToolbarButton
from sugar.activity.widgets import StopButton
except ImportError:
# <= 0.84 toolbars
pass
import olpcgamesutil
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)
# Build the Pygame canvas.
self._canvas = sugargame.canvas.PygameCanvas(self)
self.game = physics.main(self)
self.build_toolbar()
# Note that set_canvas implicitly calls read_file when resuming from the Journal.
self.set_canvas(self._canvas)
# Start the game running.
self._canvas.run_pygame(self.game.run)
def read_file(self, file_path):
event = pygame.event.Event(pygame.USEREVENT)
event.code = olpcgamesutil.FILE_READ_REQUEST
event.filename = file_path
event.metadata = self.metadata
self._canvas.translator._post(event)
def write_file(self, file_path):
event = pygame.event.Event(pygame.USEREVENT,
code = olpcgamesutil.FILE_WRITE_REQUEST,
filename = file_path,
metadata = self.metadata)
self.canvas.translator._post(event)
def get_preview(self):
"""Custom preview code to get image from pygame.
"""
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
# Setup the toolbar
def build_toolbar(self):
try:
# Use new >= 0.86 toolbar
self.max_participants = 1
toolbar_box = ToolbarBox()
activity_button = ActivityToolbarButton(self)
toolbar_box.toolbar.insert(activity_button, 0)
activity_button.show()
separator = gtk.SeparatorToolItem()
toolbar_box.toolbar.insert(separator, -1)
separator.show()
self._insert_create_tools(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_button = StopButton(self)
toolbar_box.toolbar.insert(stop_button, -1)
stop_button.show()
self.set_toolbar_box(toolbar_box)
toolbar_box.show()
return toolbar_box
except NameError:
# Use old <= 0.84 toolbar design
toolbox = activity.ActivityToolbox(self)
activity_toolbar = toolbox.get_activity_toolbar()
activity_toolbar.share.props.visible = False
create_toolbar = gtk.Toolbar()
self._insert_create_tools(create_toolbar)
toolbox.add_toolbar(_("Create"), create_toolbar)
create_toolbar.show()
toolbox.set_current_toolbar(1)
toolbox.show()
self.set_toolbox(toolbox)
return activity_toolbar
def _insert_create_tools(self, create_toolbar):
# Stop/play button
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)
create_toolbar.insert(self.stop_play, -1)
self.stop_play.show()
separator = gtk.SeparatorToolItem()
create_toolbar.insert(separator, -1)
separator.show()
# 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
button.set_tooltip(c.toolTip)
button.set_accelerator(c.toolAccelerator)
button.connect('clicked', self.radioClicked)
create_toolbar.insert(button, -1)
button.show()
self.radioList[button] = c.name
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
# Update button
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 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 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 _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"))