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# -*- mode: python; coding: utf-8 -*-
#
# Pigment Python binding timing example
#
# Copyright © 2006, 2007, 2008 Fluendo Embedded S.L.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
# Author: Loïc Molinari <loic@fluendo.com>
import sys, pgm, gobject
from pgm.timing import controller, modifier, keyframe, ticker
# Update the position
def on_update_pass(viewport, tck):
tck.tick()
# Terminate the mainloop on a delete event
def on_delete(viewport, event, ctrl):
ctrl.stop()
pgm.main_quit()
# Key press handler
def on_key_press(viewport, event):
if event.keyval == pgm.keysyms.f:
viewport.fullscreen = not viewport.fullscreen
def main(args):
# OpenGL viewport creation
gl = pgm.viewport_factory_make('opengl')
gl.title = 'Animated image'
# Canvas and image drawable creation
cvs = pgm.Canvas()
img = pgm.Image()
# Bind the canvas to the OpenGL viewport
gl.set_canvas(cvs)
# Load an image
img.set_from_file('examples/pictures/fluendo.png')
img.bg_color = (255, 255, 255, 0)
# Center the image
img.position = (1.5, 1.0, 0.0)
# A drawable needs to be shown
img.show()
# Add it to the middle layer of the canvas
cvs.add(pgm.DRAWABLE_MIDDLE, img)
# Set the ticker used by controllers
tck = ticker.Ticker()
controller.Controller.set_ticker(tck)
# Y position timeline
tml_y = [keyframe.KeyFrame(2.0, 0.0),
keyframe.KeyFrame(0.25, 1.0)]
mdf_y = modifier.Modifier([img], 'y', tml_y)
# Y position timeline
tml_ry = [keyframe.KeyFrame(3.1415, 0.0),
keyframe.KeyFrame(3.1415 * 2.0, 1.0)]
mdf_ry = modifier.Modifier([img], 'ry', tml_ry)
# Create the animation controller
ctrl = controller.Controller(duration=1000,
repeat_behavior=controller.REVERSE,
repeat_count=controller.INFINITE,
transformation=controller.DECELERATE,
modifiers=[mdf_y, mdf_ry])
# Start the controller
ctrl.start()
# Let's start the mainloop
gl.connect('delete-event', on_delete, ctrl)
gl.connect('key-press-event', on_key_press)
gl.connect('update-pass', on_update_pass, tck)
gl.show()
pgm.main()
if __name__ == '__main__':
sys.exit(main(sys.argv[1:]))
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