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#!/usr/bin/env python
#############################################################################
##
## Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
## Contact: Qt Software Information (qt-info@nokia.com)
##
## This file is part of the Graphics Dojo project on Qt Labs.
##
## This file may be used under the terms of the GNU General Public
## License version 2.0 or 3.0 as published by the Free Software Foundation
## and appearing in the file LICENSE.GPL included in the packaging of
## this file. Please review the following information to ensure GNU
## General Public Licensing requirements will be met:
## http://www.fsf.org/licensing/licenses/info/GPLv2.html and
## http://www.gnu.org/copyleft/gpl.html.
##
## If you are unsure which license is appropriate for your use, please
## contact the sales department at qt-sales@nokia.com.
##
## This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
## WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
##
#############################################################################
import os, sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtWebKit import *
if QT_VERSION < 0x0040500:
sys.stderr.write("You need Qt 4.5 or newer to run this example.\n")
sys.exit(1)
class S5Runner(QWebView):
def __init__(self, parent = None):
QWebView.__init__(self, parent)
timer = QTimer(self)
self.overlay = QColor(Qt.transparent)
self.invert = False
self.minutes = 30
self.titleChanged.connect(self.setWindowTitle)
timer.timeout.connect(self.tick)
timer.start(60*1000)
def tick(self):
self.minutes -= 1
self.update()
def paintEvent(self, event):
if self.overlay.alpha() != 0:
p = QPainter()
p.begin(self)
p.fillRect(event.rect(), self.overlay)
p.end()
else:
QWebView.paintEvent(self, event)
p = QPainter()
p.begin(self)
if self.page().isContentEditable():
opts = QTextOption(Qt.AlignCenter)
p.save()
p.setOpacity(0.5)
p.setPen(Qt.white)
p.drawText(QRectF(0, 0, self.width(), 25), "Edit Mode", opts)
p.restore()
if self.invert:
p.setCompositionMode(QPainter.CompositionMode_Difference)
p.fillRect(event.rect(), Qt.white)
if True:
opts = QTextOption(Qt.AlignCenter)
corner = QRectF(self.width() - 100, self.height() - 50, 50, 50)
f = QFont(self.font())
f.setPixelSize(30)
p.setFont(f)
p.setOpacity(0.6)
p.drawText(corner, str(self.minutes), opts)
p.end()
def keyPressEvent(self, event):
# Esc resets everything
if event.key() == Qt.Key_Escape:
self.page().setContentEditable(False)
self.overlay = QColor(Qt.transparent)
self.showNormal()
self.update()
event.accept()
return
# F5 reloads the web content
if event.key() == Qt.Key_F5:
self.reload()
event.accept()
return
# F3 allows editing
if event.key() == Qt.Key_F3:
self.page().setContentEditable(not self.page().isContentEditable())
self.update()
event.accept()
return
# F toggles full-screen
if not self.page().isContentEditable() and event.key() == Qt.Key_F:
if self.isFullScreen():
self.showNormal()
else:
self.showFullScreen()
event.accept()
return
# B sets the screen to black
if not self.page().isContentEditable() and event.key() == Qt.Key_B:
if self.overlay == Qt.black:
self.overlay = QColor(Qt.transparent)
else:
self.overlay = QColor(Qt.black)
self.update()
event.accept()
return
# W sets the screen to white
if not self.page().isContentEditable() and event.key() == Qt.Key_W:
if self.overlay == Qt.white:
self.overlay = QColor(Qt.transparent)
else:
self.overlay = QColor(Qt.white)
self.update()
event.accept()
return
# N toggles night-mode
if not self.page().isContentEditable() and event.key() == Qt.Key_N:
self.invert = not self.invert
self.update()
event.accept()
return
# Navigation keys
if not self.page().isContentEditable():
sendkey = -1
if event.key() == Qt.Key_Left:
sendkey = 37
elif event.key() == Qt.Key_Right:
sendkey = 39
if sendkey > 0:
f = self.page().mainFrame()
trigger = QString("var k = { which: %1 } keys(k)").arg(sendkey)
f.evaluateJavaScript(trigger)
event.accept()
else:
QWebView.keyPressEvent(self, event)
if __name__ == "__main__":
try:
QX11Info
QApplication.setGraphicsSystem("raster")
except NameError:
pass
app = QApplication(sys.argv)
if len(sys.argv) == 2:
fname = QString.fromLocal8Bit(os.path.abspath(sys.argv[1]))
else:
fname = QFileDialog.getOpenFileName(None, "Open Presentation")
if fname.isEmpty():
sys.exit()
w = S5Runner()
w.resize(800, 600)
w.load(QUrl.fromLocalFile(fname))
w.show()
sys.exit(app.exec_())
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