Provides the about dialog.
| Type: | about |
| Uses (at least one of): |
TranslatorModule >
AuthorsModule > |
| Requires (at least one of): |
GuiModule >
|
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# -*- coding: utf-8 -*-
# Copyright 2011-2013, Marten de Vries
# Copyright 2008-2011, Roel Huybrechts
#
# 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/>.
#pyratemp, QtCore & QtWidgets imported in enable()
import random
import weakref
def installQtClasses():
global AboutDialog
class AboutTextLabel(QtWidgets.QLabel):
def __init__(self, metadata, templatePath, *args, **kwargs):
super().__init__(*args, **kwargs)
self._metadata = metadata
self._templatePath = templatePath
self.setOpenExternalLinks(True)
self.setAlignment(QtCore.Qt.AlignCenter)
def retranslate(self):
with open(self._templatePath, encoding='UTF-8') as f:
t = pyratemp.Template(f.read())
data = self._metadata.copy()
data.update({
"websiteText": _("Project website"),
})
self.setText(t(**data))
class AboutImageLabel(QtWidgets.QLabel):
def __init__(self, metadata, *args, **kwargs):
super().__init__(*args, **kwargs)
self.setPixmap(QtGui.QPixmap(metadata["comicPath"]))
self.setAlignment(QtCore.Qt.AlignCenter)
class AboutWidget(QtWidgets.QWidget):
"""The about page (shows some metadata)."""
def __init__(self, metadata, templatePath, *args, **kwargs):
super().__init__(*args, **kwargs)
imageLabel = AboutImageLabel(metadata)
self.textLabel = AboutTextLabel(metadata, templatePath)
layout = QtWidgets.QVBoxLayout()
layout.addStretch()
layout.addWidget(imageLabel)
layout.addStretch()
layout.addWidget(self.textLabel)
layout.addStretch()
self.setLayout(layout)
def retranslate(self):
self.textLabel.retranslate()
class ShortLicenseWidget(QtWidgets.QWidget):
def __init__(self, metadata, *args, **kwargs):
super().__init__(*args, **kwargs)
label = QtWidgets.QLabel()
label.setText(metadata["licenseIntro"])
self.fullLicenseButton = QtWidgets.QPushButton()
vbox = QtWidgets.QVBoxLayout()
vbox.addWidget(label)
vbox.addWidget(self.fullLicenseButton)
self.layout = QtWidgets.QHBoxLayout()
self.layout.addStretch()
self.layout.addLayout(vbox)
self.layout.addStretch()
self.setLayout(self.layout)
def retranslate(self):
self.fullLicenseButton.setText(_("Full license text"))
class LongLicenseWidget(QtWidgets.QTextEdit):
def __init__(self, metadata, *args, **kwargs):
super().__init__(*args, **kwargs)
self.setReadOnly(True)
self.setText(metadata["license"])
class LicenseWidget(QtWidgets.QStackedWidget):
"""The license page. Can show both the short copyright notice,
and the full license.
"""
def __init__(self, metadata, *args, **kwargs):
super().__init__(*args, **kwargs)
self.shortLicenseWidget = ShortLicenseWidget(metadata)
self.longLicenseWidget = LongLicenseWidget(metadata)
self.shortLicenseWidget.fullLicenseButton.clicked.connect(self.showFullLicense)
self.addWidget(self.shortLicenseWidget)
self.addWidget(self.longLicenseWidget)
def retranslate(self):
self.shortLicenseWidget.retranslate()
def showFullLicense(self):
self.setCurrentIndex(1) #longLicenseWidget
class PersonWidget(QtWidgets.QWidget):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.taskLabel = QtWidgets.QLabel("")
self.taskLabel.setStyleSheet("font-size:24pt;")
self.nameLabel = QtWidgets.QLabel("")
self.nameLabel.setStyleSheet("font-size:36pt;")
#to prevent flash of unstyled content
palette = QtGui.QPalette()
color = palette.windowText().color()
color.setAlpha(0)
palette.setColor(QtGui.QPalette.WindowText, color)
self.taskLabel.setPalette(palette)
self.nameLabel.setPalette(palette)
self.taskLabel.setAlignment(QtCore.Qt.AlignCenter)
self.nameLabel.setAlignment(QtCore.Qt.AlignCenter)
self.layout = QtWidgets.QVBoxLayout()
self.layout.addWidget(self.taskLabel)
self.layout.addStretch()
self.layout.addWidget(self.nameLabel)
self.setLayout(self.layout)
def update(self, task, name):
self.taskLabel.setText(task)
self.nameLabel.setText(name)
def fade(self, step):
if step <= 255:
alpha = step
elif step > 765:
alpha = 1020 - step
else:
return
palette = QtGui.QPalette()
color = palette.windowText().color()
color.setAlpha(alpha)
palette.setColor(QtGui.QPalette.WindowText, color)
self.taskLabel.setPalette(palette)
self.nameLabel.setPalette(palette)
class AuthorsWidget(QtWidgets.QWidget):
"""The authors widget. Displays all authors of OpenTeacher with
a fade animation.
"""
def __init__(self, authors, *args, **kwargs):
super().__init__(*args, **kwargs)
if len(authors) == 0:
self.authors = None
else:
self.backupAuthors = list(authors)
self.authors = []
self.personWidget = PersonWidget()
self.launchpadLabel = QtWidgets.QLabel()
self.launchpadLabel.setAlignment(QtCore.Qt.AlignCenter)
self.layout = QtWidgets.QVBoxLayout()
self.layout.addWidget(self.personWidget)
self.layout.addStretch()
self.layout.addWidget(self.launchpadLabel)
self.setLayout(self.layout)
self.animationActive = False
def retranslate(self):
self.launchpadLabel.setText(
_("Thanks to all Launchpad contributors!")
)
def startAnimation(self):
self.nextAuthor()
timeLine = QtCore.QTimeLine(5000, self)
#4x 255; 2x for the alpha gradients, 2x for a pause
timeLine.setFrameRange(0, 1020)
timeLine.frameChanged.connect(self.personWidget.fade)
timeLine.finished.connect(self.startAnimation)
timeLine.start()
self.animationActive = True
def nextAuthor(self):
if self.authors is None:
return
try:
self.personWidget.update(*self.authors.pop())
except IndexError:
self.authors = self.backupAuthors[:]
random.shuffle(self.authors)
self.nextAuthor()
class AboutDialog(QtWidgets.QTabWidget):
"""The about dialog, consists of an about page, a license page
and an authors page.
"""
def __init__(self, authors, metadata, templatePath, *args, **kwargs):
super().__init__(*args, **kwargs)
self.setTabPosition(QtWidgets.QTabWidget.South)
self.setDocumentMode(True)
self.aboutWidget = AboutWidget(metadata, templatePath)
self.licenseWidget = LicenseWidget(metadata)
self.authorsWidget = AuthorsWidget(authors)
self.addTab(self.aboutWidget, "")
self.addTab(self.licenseWidget, "")
self.addTab(self.authorsWidget, "")
self.currentChanged.connect(self.startAnimation)
def retranslate(self):
self.setWindowTitle(_("About"))
self.setTabText(0, _("About"))
self.setTabText(1, _("License"))
self.setTabText(2, _("Authors"))
self.aboutWidget.retranslate()
self.licenseWidget.retranslate()
self.authorsWidget.retranslate()
def startAnimation(self):
if self.currentWidget() == self.authorsWidget and not self.authorsWidget.animationActive:
self.authorsWidget.startAnimation()
class AboutDialogModule:
"""Provides the about dialog."""
def __init__(self, moduleManager, *args, **kwargs):
super().__init__(*args, **kwargs)
self._mm = moduleManager
self.type = "about"
self.requires = (
self._mm.mods(type="ui"),
)
self.uses = (
self._mm.mods(type="translator"),
self._mm.mods(type="authors"),
)
self.filesWithTranslations = ("about.py",)
def show(self):
try:
module = self._modules.default("active", type="authors")
except IndexError:
authors = set()
else:
authors = module.registeredAuthors
metadata = self._modules.default("active", type="metadata").metadata
templatePath = self._mm.resourcePath("about.html")
dialog = AboutDialog(authors, metadata, templatePath)
self._activeDialogs.add(weakref.ref(dialog))
tab = self._modules.default("active", type="ui").addCustomTab(dialog)
dialog.tab = tab
tab.closeRequested.handle(tab.close)
self._retranslate()
def _retranslate(self):
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")
)
for ref in self._activeDialogs:
dialog = ref()
if dialog is not None:
dialog.retranslate()
dialog.tab.title = dialog.windowTitle()
def enable(self):
global pyratemp
global QtCore, QtWidgets, QtGui
try:
import pyratemp
from PyQt5 import QtCore, QtWidgets, QtGui
except ImportError:
return #remain inactive
installQtClasses()
self._modules = set(self._mm.mods(type="modules")).pop()
self._activeDialogs = set()
#load translator
try:
translator = self._modules.default("active", type="translator")
except IndexError:
pass
else:
translator.languageChanged.handle(self._retranslate)
self._retranslate()
self.active = True
def disable(self):
self.active = False
del self._modules
del self._activeDialogs
def init(moduleManager):
return AboutDialogModule(moduleManager)
|