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OficinaActivity.py
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OficinaActivity.py
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# -*- coding: utf-8 -*-
"""
OficinaActivity.py
Create Oficina Activity
Copyright 2007, NATE-LSI-EPUSP
Oficina is developed in Brazil at Escola Politécnica of
Universidade de São Paulo. NATE is part of LSI (Integrable
Systems Laboratory) and stands for Learning, Work and Entertainment
Research Group. Visit our web page:
www.lsi.usp.br/nate
Suggestions, bugs and doubts, please email oficina@lsi.usp.br
Oficina 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 version 2 of
the License.
Oficina 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 Oficina; if not, write to the
Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
Boston, MA 02110-1301 USA.
The copy of the GNU General Public License is found in the
COPYING file included in the source distribution.
Authors:
Joyce Alessandra Saul (joycealess@gmail.com)
Andre Mossinato (andremossinato@gmail.com)
Nathalia Sautchuk Patrício (nathalia.sautchuk@gmail.com)
Pedro Kayatt (pekayatt@gmail.com)
Rafael Barbolo Lopes (barbolo@gmail.com)
Alexandre A. Gonçalves Martinazzo (alexandremartinazzo@gmail.com)
Colaborators:
Bruno Gola (brunogola@gmail.com)
Group Manager:
Irene Karaguilla Ficheman (irene@lsi.usp.br)
Cientific Coordinator:
Roseli de Deus Lopes (roseli@lsi.usp.br)
UI Design (OLPC):
Eben Eliason (eben@laptop.org)
Project Coordinator (OLPC):
Manusheel Gupta (manu@laptop.org)
Project Advisor (OLPC):
Walter Bender (walter@laptop.org)
"""
from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import GObject
import logging
import json
from sugar3.activity import activity
from sugar3.graphics import style
from sugar3.activity.widgets import BulletinBoard
from Area import Area
from toolbox import DrawToolbarBox
class OficinaActivity(activity.Activity):
def __init__(self, handle):
"""Initialize the OficinaActivity object.
@param self
@param handle
"""
activity.Activity.__init__(self, handle)
self.max_participants = 1
logging.debug('Starting Paint activity (Oficina)')
self.fixed = Gtk.Fixed()
self._width = Gdk.Screen.width()
self._height = Gdk.Screen.height()
self.fixed.show()
self.fixed.modify_bg(Gtk.StateType.NORMAL,
style.COLOR_WHITE.get_gdk_color())
self.textview = Gtk.TextView()
self.textview.set_events(Gdk.EventMask.POINTER_MOTION_MASK |
Gdk.EventMask.POINTER_MOTION_HINT_MASK |
Gdk.EventMask.BUTTON_PRESS_MASK |
Gdk.EventMask.BUTTON_RELEASE_MASK |
Gdk.EventMask.BUTTON_MOTION_MASK |
Gdk.EventMask.TOUCH_MASK)
self.textview.connect('event', self.__textview_event_cb)
self.textview.connect("motion_notify_event",
self.__textview_mouse_move_cb)
self.fixed.put(self.textview, 0, 0)
# These attributes are used in other classes, so they should be public
self.area = Area(self)
self.area.show()
self.fixed.put(self.area, 0, 0)
self.board = BulletinBoard(self)
self.fixed.put(self.board.fixed, 0, 0)
self._sw = Gtk.ScrolledWindow()
self._sw.set_kinetic_scrolling(False)
self._sw.show()
self._sw.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC)
self.set_canvas(self._sw)
self.toolset_intialize_from_journal()
toolbar_box = DrawToolbarBox(self)
toolbar_box.toolbar.insert(self.board.button, -1)
#toolbar_box.toolbar.insert(self.board.share_button, -1)
#toolbar_box.toolbar.insert(self.board.button, -1)
self.board.button.show()
toolbar_box.show_all()
#self.board.box_button.hide()
#self.board.share_button.hide()
self.connect("key_press_event", self.key_press)
# setup self.area only once
def map_cp(widget):
def size_allocate_cb(widget, allocation):
widget.disconnect(self._setup_handle)
self.area.setup(allocation.width, allocation.height)
self.center_area()
self.canvas.add_with_viewport(self.fixed)
# to remove the border, we need set the shadowtype
# in the viewport child of the scrolledwindow
self.canvas.get_children()[0].set_shadow_type(Gtk.ShadowType.NONE)
self.disconnect(self._setup_handle)
self._setup_handle = self._sw.connect('size_allocate',
size_allocate_cb)
self._setup_handle = self.connect('map', map_cp)
# Handle screen rotation
Gdk.Screen.get_default().connect('size-changed', self._configure_cb)
def _configure_cb(self, event):
''' Rotate the drawing after a screen rotation '''
width = Gdk.Screen.width()
height = Gdk.Screen.height()
if (self._width > self._height) != (width > height):
GObject.timeout_add(100, self.area.rotate_right, self.area)
self._width = width
self._height = height
def key_press(self, widget, event):
print event.keyval
if event.keyval == 45:
self.area.change_line_size(-1)
if event.keyval == 43:
self.area.change_line_size(1)
def read_file(self, file_path):
'''Read file from Sugar Journal.'''
logging.debug('reading file %s, mimetype: %s, title: %s',
file_path, self.metadata['mime_type'],
self.metadata['title'])
self.area.load_from_file(file_path)
def size_allocate_cb(widget, allocation):
logging.error('read file size allocate')
self.fixed.disconnect(self._setup_handle)
width = self.area.drawing_canvas_data.get_width()
height = self.area.drawing_canvas_data.get_height()
if self.area.drawing_canvas is None:
self.area.setup(width, height)
# The scrolled window is confused with a image of the same size
# of the canvas when the toolbars popup and the scrolls
# keep visible.
if height > allocation.height or width > allocation.width:
self.canvas.set_policy(Gtk.PolicyType.AUTOMATIC,
Gtk.PolicyType.AUTOMATIC)
else:
self.canvas.set_policy(Gtk.PolicyType.NEVER,
Gtk.PolicyType.AUTOMATIC)
self.center_area()
self.canvas.add_with_viewport(self.fixed)
# to remove the border, we need set the shadowtype
# in the viewport child of the scrolledwindow
self.canvas.get_children()[0].set_shadow_type(Gtk.ShadowType.NONE)
self.canvas.get_children()[0].set_border_width(0)
self.disconnect(self._setup_handle)
self._setup_handle = self.fixed.connect('size_allocate',
size_allocate_cb)
# disassociate with journal entry to avoid overwrite (SL #1771)
if self.metadata['mime_type'] != "image/png":
self._jobject.object_id = None
last_point_posi = self.metadata['title'].rfind('.')
if last_point_posi > -1:
title = self.metadata['title'][0:last_point_posi] + '.png'
self.metadata['title'] = title
logging.error('title: %s', self.metadata['title'])
def write_file(self, file_path):
'''Save file on Sugar Journal. '''
width, height = self.area.get_size_request()
logging.debug('writting %s w=%s h=%s' % (file_path, width, height))
if self.area.text_in_progress:
self.area.d.text(self.area, 0, 0)
self.area.getout()
self.area.drawing_canvas.write_to_png(file_path)
self.metadata['mime_type'] = 'image/png'
self.metadata['state'] = json.dumps(self.area.tool)
logging.debug('Wrote metadata[\'state\']: %s', self.metadata['state'])
def _get_area_displacement(self):
"""Return the point to use as top left corner in order to move
the drawing area and center it on the canvas.
"""
canvas_width = self.canvas.get_allocation().width
canvas_height = self.canvas.get_allocation().height
area_width, area_height = self.area.get_size_request()
# Avoid 'x' and 'y' to be outside the screen
x = max(0, (canvas_width - area_width) / 2)
y = max(0, (canvas_height - area_height) / 2)
return x, y
def center_area(self):
x, y = self._get_area_displacement()
self.fixed.move(self.area, x, y)
def move_textview(self, dx, dy):
x, y = self._get_area_displacement()
self.fixed.move(self.textview, x + dx, y + dy)
def toolset_intialize_from_journal(self):
try:
self.area.tool = json.loads(self.metadata['state'])
logging.debug('self.area.tool %s', self.area.tool)
except Exception as e:
logging.error("exception %s", e)
def __textview_event_cb(self, widget, event):
if event.type in (Gdk.EventType.TOUCH_BEGIN,
Gdk.EventType.TOUCH_CANCEL, Gdk.EventType.TOUCH_END,
Gdk.EventType.BUTTON_PRESS,
Gdk.EventType.BUTTON_RELEASE):
x = int(event.get_coords()[1])
y = int(event.get_coords()[2])
if event.type in (Gdk.EventType.TOUCH_BEGIN,
Gdk.EventType.BUTTON_PRESS):
self._initial_textview_touch_x = x
self._initial_textview_touch_y = y
elif event.type in (Gdk.EventType.TOUCH_END,
Gdk.EventType.BUTTON_RELEASE):
# be sure the textview don't have a selection pending
# and put the cursor at the end of the text
text_buf = self.textview.get_buffer()
end_text_iter = text_buf.get_end_iter()
text_buf.select_range(end_text_iter, end_text_iter)
def __textview_mouse_move_cb(self, widget, event):
x = event.x
y = event.y
if event.get_state() & Gdk.ModifierType.BUTTON1_MASK:
dx = x - self._initial_textview_touch_x
dy = y - self._initial_textview_touch_y
tv_alloc = self.textview.get_allocation()
self.move_textview(tv_alloc.x + dx, tv_alloc.y + dy)