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158 lines
5.3 KiB
Python
158 lines
5.3 KiB
Python
#!/usr/bin/env python
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"""
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Capture a web page and save its internal frames in different images
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framecapture.py <url> <outputfile>
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Notes:
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'url' is the URL of the web page to be captured
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'outputfile' is the prefix of the image files to be generated
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Example:
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framecapture qt.nokia.com trolltech.png
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Result:
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trolltech.png (full page)
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trolltech_frame1.png (...) trolltech_frameN.png ('N' number of internal frames)
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"""
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#############################################################################
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##
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## Copyright (C) 2013 Riverbank Computing Limited
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## Copyright (C) 2010 Hans-Peter Jansen <hpj@urpla.net>.
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## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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## All rights reserved.
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##
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## This file is part of the examples of PyQt.
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##
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## $QT_BEGIN_LICENSE:BSD$
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## You may use this file under the terms of the BSD license as follows:
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##
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## "Redistribution and use in source and binary forms, with or without
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## modification, are permitted provided that the following conditions are
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## met:
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## * Redistributions of source code must retain the above copyright
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## notice, this list of conditions and the following disclaimer.
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## * Redistributions in binary form must reproduce the above copyright
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## notice, this list of conditions and the following disclaimer in
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## the documentation and/or other materials provided with the
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## distribution.
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## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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## the names of its contributors may be used to endorse or promote
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## products derived from this software without specific prior written
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## permission.
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##
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## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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## $QT_END_LICENSE$
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##
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###########################################################################
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import sys
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from PyQt5.QtCore import pyqtSignal, QObject, QSize, Qt, QUrl
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from PyQt5.QtGui import QImage, QPainter
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from PyQt5.QtWidgets import QApplication
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from PyQt5.QtWebKitWidgets import QWebPage
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def cout(s):
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sys.stdout.write(s)
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sys.stdout.flush()
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def cerr(s):
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sys.stderr.write(s)
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sys.stderr.flush()
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class FrameCapture(QObject):
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finished = pyqtSignal()
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def __init__(self):
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super(FrameCapture, self).__init__()
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self._percent = 0
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self._page = QWebPage()
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self._page.mainFrame().setScrollBarPolicy(Qt.Vertical,
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Qt.ScrollBarAlwaysOff)
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self._page.mainFrame().setScrollBarPolicy(Qt.Horizontal,
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Qt.ScrollBarAlwaysOff)
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self._page.loadProgress.connect(self.printProgress)
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self._page.loadFinished.connect(self.saveResult)
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def load(self, url, outputFileName):
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cout("Loading %s\n" % url.toString())
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self._percent = 0
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index = outputFileName.rfind('.')
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self._fileName = index == -1 and outputFileName + ".png" or outputFileName
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self._page.mainFrame().load(url)
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self._page.setViewportSize(QSize(1024, 768))
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def printProgress(self, percent):
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if self._percent >= percent:
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return
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self._percent += 1
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while self._percent < percent:
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self._percent += 1
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cout("#")
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def saveResult(self, ok):
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cout("\n")
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# Crude error-checking.
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if not ok:
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cerr("Failed loading %s\n" % self._page.mainFrame().url().toString())
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self.finished.emit()
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return
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# Save each frame in different image files.
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self._frameCounter = 0
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self.saveFrame(self._page.mainFrame())
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self.finished.emit()
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def saveFrame(self, frame):
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fileName = self._fileName
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if self._frameCounter:
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index = fileName.rfind('.')
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fileName = "%s_frame%s%s" % (fileName[:index], self._frameCounter, fileName[index:])
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image = QImage(frame.contentsSize(), QImage.Format_ARGB32_Premultiplied)
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image.fill(Qt.transparent)
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painter = QPainter(image)
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painter.setRenderHint(QPainter.Antialiasing, True)
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painter.setRenderHint(QPainter.TextAntialiasing, True)
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painter.setRenderHint(QPainter.SmoothPixmapTransform, True)
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frame.documentElement().render(painter)
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painter.end()
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image.save(fileName)
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self._frameCounter += 1
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for childFrame in frame.childFrames():
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self.saveFrame(childFrame)
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if __name__ == '__main__':
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if len(sys.argv) != 3:
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cerr(__doc__)
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sys.exit(1)
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url = QUrl.fromUserInput(sys.argv[1])
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fileName = sys.argv[2]
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app = QApplication(sys.argv)
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capture = FrameCapture()
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capture.finished.connect(app.quit)
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capture.load(url, fileName)
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app.exec_()
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