# -*- coding:utf-8 -*-
#! python3
# ----------------------------------------------------------------------------
# pyglet
# Copyright (c) 2006-2008 Alex Holkner
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions 
# are met:
#
# * Redistributions of source code must retain the above copyright
#  notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright 
#  notice, this list of conditions and the following disclaimer in
#  the documentation and/or other materials provided with the
#  distribution.
# * Neither the name of pyglet nor the names of its
#  contributors may be used to endorse or promote products
#  derived from this software without specific prior written
#  permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ----------------------------------------------------------------------------
'''Audio and video player with simple GUI controls.
'''
__docformat__ = 'restructuredtext'
__version__ = '$Id: $'
import sys
from pyglet.gl import *
import pyglet
from pyglet.window import key
def draw_rect(x, y, width, height):
  glBegin(GL_LINE_LOOP)
  glVertex2f(x, y)
  glVertex2f(x + width, y)
  glVertex2f(x + width, y + height)
  glVertex2f(x, y + height)
  glEnd()
class Control(pyglet.event.EventDispatcher):
  x = y = 0
  width = height = 10
  def __init__(self, parent):
    super(Control, self).__init__()
    self.parent = parent
  def hit_test(self, x, y):#点中控件
    return (self.x < x < self.x + self.width and 
        self.y < y  1:
      width *= video_format.sample_aspect
    elif video_format.sample_aspect < 1:
      height /= video_format.sample_aspect
    return width, height
  def set_default_video_size(self):
    '''Make the window size just big enough to show the current
    video and the GUI.'''
    width = self.GUI_WIDTH
    height = self.GUI_HEIGHT
    video_width, video_height = self.get_video_size()
    width = max(width, video_width)
    height += video_height
    self.set_size(int(width), int(height))
  def on_resize(self, width, height):
    '''Position and size video image.'''
    super(PlayerWindow, self).on_resize(width, height)
    self.slider.width = width - self.GUI_PADDING * 2
    height -= self.GUI_HEIGHT
    if height <= 0:
      return
    video_width, video_height = self.get_video_size()
    if video_width == 0 or video_height == 0:
      return
    display_aspect = width / float(height)
    video_aspect = video_width / float(video_height)
    if video_aspect > display_aspect:
      self.video_width = width
      self.video_height = width / video_aspect
    else:
      self.video_height = height
      self.video_width = height * video_aspect
    self.video_x = (width - self.video_width) / 2
    self.video_y = (height - self.video_height) / 2 + self.GUI_HEIGHT
  def on_mouse_press(self, x, y, button, modifiers):
    for control in self.controls:
      if control.hit_test(x, y):
        control.on_mouse_press(x, y, button, modifiers)
  def on_key_press(self, symbol, modifiers):
    if symbol == key.SPACE:
      self.on_play_pause()
    elif symbol == key.ESCAPE:
      self.dispatch_event('on_close')
  def on_close(self):
    self.player.pause()
    self.close()
  def on_play_pause(self):
    if self.player.playing:
      self.player.pause()
    else:
      if self.player.time >= self.player.source.duration:#如果放完了
        self.player.seek(0)
      self.player.play()
    self.gui_update_state()
  def on_draw(self):
    self.clear()
    # Video
    if self.player.source and self.player.source.video_format:
      self.player.get_texture().blit(self.video_x,
                      self.video_y,
                      width=self.video_width,
                      height=self.video_height)
    # GUI
    self.slider.value = self.player.time
    for control in self.controls:
      control.draw()
if __name__ == '__main__':
  if len(sys.argv) < 2:
    print('Usage: media_player.py  [ ...]')
    sys.exit(1)
  for filename in sys.argv[1:]:
    player = pyglet.media.Player()
    window = PlayerWindow(player)
    source = pyglet.media.load(filename)
    player.queue(source)
    window.gui_update_source()
    window.set_default_video_size()
    window.set_size(400,400)
    window.set_visible(True)
    window.gui_update_state()
    player.play()
  pyglet.app.run()