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# Copyright 2008 by Peter Moxhay and Wade Brainerd.
# This file is part of Math.
#
# Math 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.
#
# Math 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 Math. If not, see <http://www.gnu.org/licenses/>.
from objectarea import Object
from vector import Vector
import gtk, rsvg
ARROW_SVG = rsvg.Handle('next_arrow.svg')
class NextProblemObject(Object):
"""Large clickable arrow which advances to the next problem."""
def __init__(self):
Object.__init__(self)
self.draggable = False
self.selectable = True
self.pressed = False
def draw(self, cr):
cr.save()
cr.rectangle(0, 0, 1200, 900)
cr.set_source_rgba(0.9, 0.9, 0.9, 0.5)
cr.fill()
cr.translate(600-250, 400-250)
ARROW_SVG.render_cairo(cr)
cr.restore()
def get_bounds(self):
return Vector(0, 0), Vector(1200,900)
def on_mouse(self, event):
if event.type == gtk.gdk.BUTTON_PRESS:
self.pressed = True
return True
if self.pressed and event.type == gtk.gdk.BUTTON_RELEASE:
self.container.finish_next_problem_arrow()
return True
def on_key(self, event):
key_name = gtk.gdk.keyval_name(event.keyval)
# Useful print for determining the names of keys.
#print "NextProblemObject got a key press:",key_name
if key_name == 'KP_Up' \
or key_name == 'KP_Down' \
or key_name == 'KP_Left' \
or key_name == 'KP_Right' \
or key_name == 'KP_Page_Up' \
or key_name == 'KP_Page_Down' \
or key_name == 'KP_End' \
or key_name == 'Return' \
or key_name == 'space':
self.container.finish_next_problem_arrow()
return True
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