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