File: about.py

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# -*- coding: utf-8 -*-
# This file is part of the Frescobaldi project, http://www.frescobaldi.org/
#
# Copyright (c) 2008 - 2014 by Wilbert Berendsen
#
# This program 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 2
# of the License, or (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
# See http://www.gnu.org/licenses/ for more information.

"""
About dialog.
"""


from PyQt5.QtCore import QSettings, QSize, Qt, QUrl
from PyQt5.QtWidgets import (
    QDialog, QDialogButtonBox, QLabel, QLayout, QTabWidget, QTextBrowser,
    QVBoxLayout, QWidget)

import app
import appinfo
import icons
import helpers
import debuginfo
import userguide.page


class AboutDialog(QDialog):
    """A simple 'About Frescobaldi' dialog.
    
    Most of the information is taken from the info module.
    
    """
    def __init__(self, mainwindow):
        """Creates the about dialog. You can simply exec_() it."""
        super(AboutDialog, self).__init__(mainwindow)
        
        self.setWindowTitle(_("About {appname}").format(appname = appinfo.appname))
        layout = QVBoxLayout()
        self.setLayout(layout)
        
        tabw = QTabWidget()
        layout.addWidget(tabw)
        
        tabw.addTab(About(self), _("About"))
        tabw.addTab(Credits(self), _("Credits"))
        tabw.addTab(Version(self), _("Version"))
        
        button = QDialogButtonBox(QDialogButtonBox.Ok)
        button.setCenterButtons(True)
        button.accepted.connect(self.accept)
        layout.addWidget(button)
        layout.setSizeConstraint(QLayout.SetFixedSize)
        

class About(QWidget):
    """About widget."""
    def __init__(self, parent=None):
        super(About, self).__init__(parent)
        
        layout = QVBoxLayout()
        self.setLayout(layout)
        
        size = QSize(100, 100)
        pic = QLabel()
        pic.setPixmap(icons.get("frescobaldi").pixmap(size))
        pic.setFixedSize(size)
        layout.addWidget(pic, 0, Qt.AlignHCenter)

        text = QLabel()
        text.setText(html())
        text.linkActivated.connect(self.openLink)
        layout.addWidget(text)
    
    def openLink(self, url):
        helpers.openUrl(QUrl(url))


class Credits(QTextBrowser):
    """Credits widget."""
    def __init__(self, parent=None):
        super(Credits, self).__init__(parent)
        self.setOpenLinks(False)
        self.anchorClicked.connect(helpers.openUrl)
        self.setHtml(userguide.page.Page('credits').body())


class Version(QTextBrowser):
    """Version information."""
    def __init__(self, parent=None):
        super(Version, self).__init__(parent)
        self.setPlainText(debuginfo.version_info_string())


def html():
    """Returns a HTML string for the about dialog."""
    appname = appinfo.appname
    version = _("Version {version}").format(version = appinfo.version)
    description = _("A LilyPond Music Editor")
    copyright = _("Copyright (c) {year} by {author}").format(
        year = "2008-2016",
        author = """<a href="mailto:{0}" title="{1}">{2}</a>""".format(
            appinfo.maintainer_email,
            _("Send an e-mail message to the maintainers."),
            appinfo.maintainer))
    # L10N: Translate this sentence and fill in your own name to have it appear in the About Dialog.
    translator = _("Translated by Your Name.")
    if translator == "Translated by Your Name.":
        translator = ""
    else:
        translator = "<p>{0}</p>".format(translator)
    license = _("Licensed under the {gpl}.").format(
        gpl = """<a href="http://www.gnu.org/licenses/gpl.html">GNU GPL</a>""")
    homepage = appinfo.url
    
    return html_template.format(**locals())


html_template = """<html>
<body><div align="center">
<h1>{appname}</h1>
<h3>{version}</h3>
<p>{description}</p>
<p>{copyright}</p>
{translator}
<p>{license}</p>
<p><a href="{homepage}">{homepage}</a></p>
</div></body>
</html>
"""