#! /usr/bin/python

import clutter, gobject, gtk

fps = 60
scale = 1.5

stage = clutter.stage_get_default()
stage.set_color(clutter.color_parse('Black'))
stage.fullscreen()
stage.set_title('Cluttershow')
def key_press (stage, event):
    if event.keyval == clutter.keysyms.q:
        clutter.main_quit()
        return True
    return False
stage.connect('key-press-event', key_press)
stage.show()


def withdraw(actor):
    def completed(timeline, actor):
        behavior_scale.remove(actor)
        behavior_path.remove(actor)
    timeline = clutter.Timeline(fps*2, fps)
    alpha = clutter.Alpha(timeline, clutter.smoothstep_inc_func)
    timeline.connect("completed", completed, actor)
    behavior_scale = clutter.BehaviourScale(alpha, scale, 1, clutter.GRAVITY_CENTER)
    behavior_scale.apply(actor)
    behavior_path = clutter.BehaviourPath(alpha, (actor.get_abs_position(), (0, 0)))
    behavior_path.apply(actor)
    timeline.start()
    return False

def pan(actor):
    def completed(timeline, actor):
        behavior.remove(actor)
        gobject.timeout_add (500, withdraw, actor)
    timeline = clutter.Timeline(fps*2, fps)
    timeline.connect("completed", completed, actor)
    knots = (
        actor.get_abs_position(),
        (int(-((stage.get_width()*scale)-stage.get_width())+stage.get_width()/6), int(-stage.get_height() / 4))
        )
    behavior = clutter.BehaviourPath(clutter.Alpha(timeline, clutter.smoothstep_inc_func), knots)
    
    behavior.apply(actor)
    timeline.start()
    return False

def fade(actor):
    def completed(timeline, actor):
        behavior.remove(actor)
        gobject.timeout_add (250, pan, actor)
    timeline = clutter.Timeline(fps/2, fps)
    timeline.connect("completed", completed, actor)
    behavior = clutter.BehaviourOpacity(clutter.Alpha(timeline, clutter.sine_inc_func),
                                        0x00, 0xFF)
    behavior.apply(actor)
    actor.set_opacity(0)
    timeline.start()

image = gtk.gdk.pixbuf_new_from_file_at_size("/home/ross/Pictures/Desktop/1024x768/rain.jpg",
                                             int(stage.get_width()*scale), int(stage.get_height()*scale))
texture = clutter.texture_new_from_pixbuf(image)
texture.set_size(stage.get_width(), stage.get_height())
texture.set_scale_with_gravity(scale, scale, clutter.GRAVITY_CENTER)
texture.set_position(-stage.get_width()/6, -stage.get_height() / 4)
texture.show()
stage.add(texture)

fade(texture)

clutter.main()