| Type: | mediaDisplay |
| Uses (at least one of): |
TranslatorModule >
SettingsModule > |
| Requires (at least one of): |
GuiModule >
QtWebKitWebEngineModule > QtWebEngineWebEngineModule > |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 | #! /usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2011, Milan Boers
# Copyright 2011-2012, 2017, Marten de Vries
#
# This file is part of OpenTeacher.
#
# OpenTeacher 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.
#
# OpenTeacher 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 OpenTeacher. If not, see <http://www.gnu.org/licenses/>.
MIN_VOLUME = 0
BASE_VOLUME = 50
MAX_VOLUME = 100
def installQtClasses():
global MediaControlDisplay, MediaDisplay
class MediaControlDisplay(QtWidgets.QWidget):
"""The video player and web viewer combination widget with controls
"""
def __init__(self, createWebView, noPhonon, autoplay=True):
super().__init__()
self.autoplay = autoplay
self.activeModule = None
self.noPhonon = noPhonon
self.mediaDisplay = MediaDisplay(createWebView, self.autoplay, self.noPhonon)
# Do not add the Phonon widget if it is not necessary
if not self.noPhonon:
self.mediaDisplay.videoPlayer.stateChanged.connect(self._playPauseButtonUpdate)
layout = QtWidgets.QVBoxLayout()
# Do not add the controls if there is not going to be any Phonon
if not self.noPhonon:
buttonsLayout = QtWidgets.QHBoxLayout()
self.pauseButton = QtWidgets.QPushButton()
self.pauseButton.setIcon(QtGui.QIcon.fromTheme("media-playback-pause",QtGui.QIcon(base._mm.resourcePath("icons/player_pause.png"))))
self.pauseButton.clicked.connect(self.playPause)
buttonsLayout.addWidget(self.pauseButton)
self.seekSlider = QtWidgets.QSlider()
self.seekSlider.setOrientation(QtCore.Qt.Horizontal)
self.seekSlider.setRange(0, 0)
@self.seekSlider.sliderMoved.connect
def onSliderChange(position):
self.mediaDisplay.videoPlayer.setPosition(position)
@self.mediaDisplay.videoPlayer.positionChanged.connect
def onPosChange(position):
self.seekSlider.setValue(position)
@self.mediaDisplay.videoPlayer.durationChanged.connect
def onDurationChange(duration):
self.seekSlider.setRange(0, duration)
self.muteButton = QtWidgets.QToolButton()
@self.muteButton.clicked.connect
def muteClicked():
if self.mediaDisplay.videoPlayer.volume():
self._setVolume(MIN_VOLUME)
else:
self._setVolume(BASE_VOLUME)
self.volumeSlider = QtWidgets.QSlider()
self.volumeSlider.setOrientation(QtCore.Qt.Horizontal)
self.volumeSlider.setRange(MIN_VOLUME, MAX_VOLUME)
self.volumeSlider.setMaximumWidth(MAX_VOLUME)
self.volumeSlider.sliderMoved.connect(self._setVolume)
self._setVolume(BASE_VOLUME)
buttonsLayout.addWidget(self.seekSlider)
buttonsLayout.addWidget(self.muteButton)
buttonsLayout.addWidget(self.volumeSlider)
# Add the stacked widget
layout.addWidget(self.mediaDisplay)
if not self.noPhonon:
layout.addLayout(buttonsLayout)
self.setLayout(layout)
# Disable the controls
self.setControls()
def _setVolume(self, volume):
self.mediaDisplay.videoPlayer.setVolume(volume)
self.volumeSlider.setValue(volume)
if volume:
self.muteButton.setIcon(self.style().standardIcon(QtWidgets.QStyle.SP_MediaVolume))
else:
self.muteButton.setIcon(self.style().standardIcon(QtWidgets.QStyle.SP_MediaVolumeMuted))
def showMedia(self, path, remote, autoplay):
modules = base._modules.sort("active", type="mediaType")
for module in modules:
if module.supports(path):
chosenModule = module
break
chosenModule.showMedia(chosenModule.path(path, self.autoplay), self.mediaDisplay, autoplay)
self.activeModule = chosenModule
self.setControls()
def setControls(self):
# Only if there are controls
if not self.noPhonon:
needsControls = bool(self.activeModule and self.activeModule.phononControls)
self._setControlsEnabled(enabled=needsControls)
def playPause(self, event):
if not self.noPhonon:
if self.mediaDisplay.videoPlayer.state() == QtMultimedia.QMediaPlayer.PausedState:
self.mediaDisplay.videoPlayer.play()
else:
self.mediaDisplay.videoPlayer.pause()
def stop(self):
if not self.noPhonon:
self.mediaDisplay.videoPlayer.stop()
def clear(self):
self.mediaDisplay.clear()
# Set the active type
self.activeModule = None
self.setControls()
def _playPauseButtonUpdate(self, state):
if state == QtMultimedia.QMediaPlayer.PausedState:
self.pauseButton.setIcon(QtGui.QIcon.fromTheme("media-playback-play",QtGui.QIcon(base._mm.resourcePath("icons/player_play.png"))))
else:
self.pauseButton.setIcon(QtGui.QIcon.fromTheme("media-playback-pause",QtGui.QIcon(base._mm.resourcePath("icons/player_pause.png"))))
def _setControlsEnabled(self, enabled):
self.pauseButton.setEnabled(enabled)
self.seekSlider.setEnabled(enabled)
self.muteButton.setEnabled(enabled)
self.volumeSlider.setEnabled(enabled)
class MediaDisplay(QtWidgets.QStackedWidget):
"""The video player and web viewer combination widget"""
def __init__(self,createWebView,autoplay,noPhonon):
super().__init__()
#self.activeType = None
self.autoplay = autoplay
self.noPhonon = noPhonon
self.webviewer = createWebView()
self.webviewer.enablePlugins()
self.addWidget(self.webviewer.widget)
if not self.noPhonon:
self.videoPlayer = QtMultimedia.QMediaPlayer(self)
self.videoWidget = QtMultimediaWidgets.QVideoWidget()
self.videoPlayer.setVideoOutput(self.videoWidget)
self.addWidget(self.videoWidget)
def clear(self):
self.webviewer.setHtml('''
<html><head><title>Nothing</title></head><body></body></html>
''')
if not self.noPhonon:
self.videoPlayer.stop()
self.setCurrentWidget(self.webviewer.widget)
class MediaDisplayModule:
def __init__(self, moduleManager, *args, **kwargs):
super().__init__(*args, **kwargs)
global base
base = self
self._mm = moduleManager
self.type = "mediaDisplay"
self.priorities = {
"default": 495,
}
self.requires = (
self._mm.mods(type="ui"),
self._mm.mods(type='webEngine')
)
self.uses = (
self._mm.mods(type="translator"),
self._mm.mods(type="settings"),
)
self.filesWithTranslations = ("mediaDisplay.py",)
@property
def _createWebView(self):
return self._modules.default('active', type='webEngine').createView
def enable(self):
global QtCore, QtWidgets, QtGui, QtMultimedia, QtMultimediaWidgets
try:
from PyQt5 import QtCore, QtWidgets, QtGui
except ImportError:
return
self._noPhonon = False
try:
from PyQt5 import QtMultimedia, QtMultimediaWidgets
except ImportError:
self._noPhonon = True
installQtClasses()
self._modules = set(self._mm.mods(type="modules")).pop()
self.active = True
# Add settings
try:
self._settings = self._modules.default(type="settings")
except IndexError:
self._html5VideoSetting = {"value": False}
self._html5AudioSetting = {"value": False}
else:
# Settings (used in mediaTypes)
self._html5VideoSetting = self._settings.registerSetting(**{
"internal_name": "org.openteacher.lessons.media.videohtml5",
"type": "boolean",
"defaultValue": False,
"advanced": True,
})
self._html5AudioSetting = self._settings.registerSetting(**{
"internal_name": "org.openteacher.lessons.media.audiohtml5",
"type": "boolean",
"defaultValue": False,
"advanced": True,
})
try:
translator = self._modules.default("active", type="translator")
except IndexError:
pass
else:
translator.languageChanged.handle(self._retranslate)
self._retranslate()
def _retranslate(self):
#setup translation
global _
global ngettext
try:
translator = self._modules.default("active", type="translator")
except IndexError:
_, ngettext = str, lambda a, b, n: a if n == 1 else b
else:
_, ngettext = translator.gettextFunctions(
self._mm.resourcePath("translations")
)
self._html5VideoSetting.update({
"name": _("Use HTML5 for video"),
"category": _("Lesson"),
"subcategory": _("Media"),
})
self._html5AudioSetting.update({
"name": _("Use HTML5 for audio"),
"category": _("Lesson"),
"subcategory": _("Media"),
})
def disable(self):
self.active = False
del self._modules
del self._settings
del self._html5VideoSetting
del self._html5AudioSetting
del self._noPhonon
def createDisplay(self, autoplay):
return MediaControlDisplay(self._createWebView, self._noPhonon, autoplay)
def init(moduleManager):
return MediaDisplayModule(moduleManager)
|