mirror of https://github.com/vitalif/phantomjs
357 lines
12 KiB
Python
357 lines
12 KiB
Python
'''
|
|
This file is part of the PyPhantomJS project.
|
|
|
|
Copyright (C) 2011 James Roe <roejames12@hotmail.com>
|
|
|
|
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 3 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, see <http://www.gnu.org/licenses/>.
|
|
'''
|
|
|
|
from math import ceil, floor
|
|
|
|
from PyQt4.QtCore import pyqtProperty, pyqtSlot, pyqtSignal, Qt, QObject, \
|
|
QRect, QPoint, QUrl, QFileInfo, QDir, QSize, \
|
|
QSizeF, QByteArray, QEventLoop, QFile
|
|
from PyQt4.QtGui import QPalette, QDesktopServices, QPrinter, QImage, \
|
|
QPainter, QRegion, QApplication, qRgba
|
|
from PyQt4.QtWebKit import QWebSettings, QWebPage
|
|
from PyQt4.QtNetwork import QNetworkAccessManager, QNetworkRequest
|
|
|
|
from plugincontroller import Bunch, do_action
|
|
|
|
# Different defaults.
|
|
# OSX: 72, X11: 75(?), Windows: 96
|
|
pdf_dpi = 72
|
|
|
|
|
|
class CustomPage(QWebPage):
|
|
def __init__(self, parent=None):
|
|
QWebPage.__init__(self, parent)
|
|
|
|
self.parent = parent
|
|
self.m_userAgent = QWebPage.userAgentForUrl(self, QUrl())
|
|
|
|
do_action('CustomPageInit', Bunch(locals()))
|
|
|
|
def shouldInterruptJavaScript(self):
|
|
QApplication.processEvents(QEventLoop.AllEvents, 42)
|
|
return False
|
|
|
|
def javaScriptAlert(self, originatingFrame, msg):
|
|
self.parent.emitAlert(msg)
|
|
|
|
def javaScriptConsoleMessage(self, message, lineNumber, sourceID):
|
|
if sourceID:
|
|
message = '%s:%d %s' % (sourceID, lineNumber, message)
|
|
self.parent.emitConsoleMessage(message)
|
|
|
|
def userAgentForUrl(self, url):
|
|
return self.m_userAgent
|
|
|
|
do_action('CustomPage', Bunch(locals()))
|
|
|
|
|
|
class WebPage(QObject):
|
|
def __init__(self, parent=None):
|
|
QObject.__init__(self, parent)
|
|
|
|
# variable declarations
|
|
self.m_paperSize = {}
|
|
self.m_clipRect = QRect()
|
|
|
|
self.setObjectName('WebPage')
|
|
self.m_webPage = CustomPage(self)
|
|
self.m_mainFrame = self.m_webPage.mainFrame()
|
|
|
|
self.m_webPage.loadFinished.connect(self.finish)
|
|
|
|
# Start with transparent background
|
|
palette = self.m_webPage.palette()
|
|
palette.setBrush(QPalette.Base, Qt.transparent)
|
|
self.m_webPage.setPalette(palette)
|
|
|
|
# Page size does not need to take scrollbars into account
|
|
self.m_webPage.mainFrame().setScrollBarPolicy(Qt.Horizontal, Qt.ScrollBarAlwaysOff)
|
|
self.m_webPage.mainFrame().setScrollBarPolicy(Qt.Vertical, Qt.ScrollBarAlwaysOff)
|
|
|
|
self.m_webPage.settings().setAttribute(QWebSettings.OfflineStorageDatabaseEnabled, True)
|
|
self.m_webPage.settings().setOfflineStoragePath(QDesktopServices.storageLocation(QDesktopServices.DataLocation))
|
|
self.m_webPage.settings().setAttribute(QWebSettings.LocalStorageDatabaseEnabled, True)
|
|
self.m_webPage.settings().setAttribute(QWebSettings.FrameFlatteningEnabled, True)
|
|
self.m_webPage.settings().setAttribute(QWebSettings.LocalStorageEnabled, True)
|
|
self.m_webPage.settings().setLocalStoragePath(QDesktopServices.storageLocation(QDesktopServices.DataLocation))
|
|
|
|
# Ensure we have a document.body.
|
|
self.m_webPage.mainFrame().setHtml('<html><body></body></html>')
|
|
|
|
self.m_webPage.setViewportSize(QSize(400, 300))
|
|
|
|
do_action('WebPageInit', Bunch(locals()))
|
|
|
|
def applySettings(self, defaults):
|
|
opt = self.m_webPage.settings()
|
|
|
|
opt.setAttribute(QWebSettings.AutoLoadImages, defaults['loadImages'])
|
|
opt.setAttribute(QWebSettings.PluginsEnabled, defaults['loadPlugins'])
|
|
if 'userAgent' in defaults:
|
|
self.m_webPage.m_userAgent = defaults['userAgent']
|
|
|
|
javaScriptAlertSent = pyqtSignal(str)
|
|
def emitAlert(self, msg):
|
|
self.javaScriptAlertSent.emit(msg)
|
|
|
|
javaScriptConsoleMessageSent = pyqtSignal(str)
|
|
def emitConsoleMessage(self, msg):
|
|
self.javaScriptConsoleMessageSent.emit(msg)
|
|
|
|
loadStatusChanged = pyqtSignal(str)
|
|
def finish(self, ok):
|
|
status = 'success' if ok else 'fail'
|
|
self.loadStatusChanged.emit(status)
|
|
|
|
def mainFrame(self):
|
|
return self.m_mainFrame
|
|
|
|
def renderImage(self):
|
|
frameRect = QRect(QPoint(0, 0), self.m_mainFrame.contentsSize())
|
|
if not self.m_clipRect.isEmpty():
|
|
frameRect = self.m_clipRect
|
|
|
|
viewportSize = self.m_webPage.viewportSize()
|
|
self.m_webPage.setViewportSize(self.m_mainFrame.contentsSize())
|
|
|
|
image = QImage(frameRect.size(), QImage.Format_ARGB32)
|
|
image.fill(qRgba(255, 255, 255, 0))
|
|
|
|
painter = QPainter()
|
|
|
|
# We use tiling approach to work-around Qt software rasterizer bug
|
|
# when dealing with very large paint device.
|
|
# See http://code.google.com/p/phantomjs/issues/detail?id=54.
|
|
tileSize = 4096
|
|
htiles = (image.width() + tileSize - 1) / tileSize
|
|
vtiles = (image.height() + tileSize - 1) / tileSize
|
|
for x in range(htiles):
|
|
for y in range(vtiles):
|
|
tileBuffer = QImage(tileSize, tileSize, QImage.Format_ARGB32)
|
|
tileBuffer.fill(qRgba(255, 255, 255, 0))
|
|
|
|
# Render the web page onto the small tile first
|
|
painter.begin(tileBuffer)
|
|
painter.setRenderHint(QPainter.Antialiasing, True)
|
|
painter.setRenderHint(QPainter.TextAntialiasing, True)
|
|
painter.setRenderHint(QPainter.SmoothPixmapTransform, True)
|
|
painter.translate(-frameRect.left(), -frameRect.top())
|
|
painter.translate(-x * tileSize, -y * tileSize)
|
|
self.m_mainFrame.render(painter, QRegion(frameRect))
|
|
painter.end()
|
|
|
|
# Copy the tile to the main buffer
|
|
painter.begin(image)
|
|
painter.setCompositionMode(QPainter.CompositionMode_Source)
|
|
painter.drawImage(x * tileSize, y * tileSize, tileBuffer)
|
|
painter.end()
|
|
|
|
self.m_webPage.setViewportSize(viewportSize)
|
|
return image
|
|
|
|
def renderPdf(self, fileName):
|
|
p = QPrinter()
|
|
p.setOutputFormat(QPrinter.PdfFormat)
|
|
p.setOutputFileName(fileName)
|
|
p.setResolution(pdf_dpi)
|
|
paperSize = self.m_paperSize
|
|
|
|
if not len(paperSize):
|
|
pageSize = QSize(self.m_webPage.mainFrame().contentsSize())
|
|
paperSize['width'] = str(pageSize.width()) + 'px'
|
|
paperSize['height'] = str(pageSize.height()) + 'px'
|
|
paperSize['border'] = '0px'
|
|
|
|
if paperSize.get('width') and paperSize.get('height'):
|
|
sizePt = QSizeF(ceil(self.stringToPointSize(paperSize['width'])),
|
|
ceil(self.stringToPointSize(paperSize['height'])))
|
|
p.setPaperSize(sizePt, QPrinter.Point)
|
|
elif 'format' in paperSize:
|
|
orientation = QPrinter.Landscape if paperSize.get('orientation') and paperSize['orientation'].lower() == 'landscape' else QPrinter.Portrait
|
|
orientation = QPrinter.Orientation(orientation)
|
|
p.setOrientation(orientation)
|
|
|
|
formats = {
|
|
'A3': QPrinter.A3,
|
|
'A4': QPrinter.A4,
|
|
'A5': QPrinter.A5,
|
|
'Legal': QPrinter.Legal,
|
|
'Letter': QPrinter.Letter,
|
|
'Tabloid': QPrinter.Tabloid
|
|
}
|
|
|
|
p.setPaperSize(QPrinter.A4) # fallback
|
|
for format, size in formats.items():
|
|
if format.lower() == paperSize['format'].lower():
|
|
p.setPaperSize(size)
|
|
break
|
|
else:
|
|
return False
|
|
|
|
border = floor(self.stringToPointSize(paperSize['border'])) if paperSize.get('border') else 0
|
|
p.setPageMargins(border, border, border, border, QPrinter.Point)
|
|
|
|
self.m_webPage.mainFrame().print_(p)
|
|
return True
|
|
|
|
def setNetworkAccessManager(self, networkAccessManager):
|
|
self.m_webPage.setNetworkAccessManager(networkAccessManager)
|
|
|
|
def stringToPointSize(self, string):
|
|
units = (
|
|
('mm', 72 / 25.4),
|
|
('cm', 72 / 2.54),
|
|
('in', 72.0),
|
|
('px', 72.0 / pdf_dpi / 2.54),
|
|
('', 72.0 / pdf_dpi / 2.54)
|
|
)
|
|
|
|
for unit, format in units:
|
|
if string.endswith(unit):
|
|
value = string.rstrip(unit)
|
|
return float(value) * format
|
|
return 0
|
|
|
|
def userAgent(self):
|
|
return self.m_webPage.m_userAgent
|
|
|
|
##
|
|
# Properties and methods exposed to JavaScript
|
|
##
|
|
|
|
@pyqtProperty('QVariantMap')
|
|
def clipRect(self):
|
|
result = {
|
|
'width': self.m_clipRect.width(),
|
|
'height': self.m_clipRect.height(),
|
|
'top': self.m_clipRect.top(),
|
|
'left': self.m_clipRect.left()
|
|
}
|
|
return result
|
|
|
|
@clipRect.setter
|
|
def clipRect(self, size):
|
|
names = ('width', 'height', 'top', 'left')
|
|
for item in names:
|
|
try:
|
|
globals()[item] = int(size[item])
|
|
if globals()[item] < 0:
|
|
if item not in ('top', 'left'):
|
|
globals()[item] = 0
|
|
except KeyError:
|
|
globals()[item] = getattr(self.m_clipRect, item)()
|
|
|
|
self.m_clipRect = QRect(left, top, width, height)
|
|
|
|
@pyqtProperty(str)
|
|
def content(self):
|
|
return self.m_mainFrame.toHtml()
|
|
|
|
@content.setter
|
|
def content(self, content):
|
|
self.m_mainFrame.setHtml(content)
|
|
|
|
@pyqtSlot(str, result='QVariant')
|
|
def evaluate(self, code):
|
|
function = '(%s)()' % code
|
|
return self.m_mainFrame.evaluateJavaScript(function)
|
|
|
|
@pyqtSlot(str, str, 'QVariantMap')
|
|
@pyqtSlot(str, 'QVariantMap', 'QVariantMap')
|
|
def openUrl(self, address, op, settings):
|
|
operation = op
|
|
body = QByteArray()
|
|
|
|
self.applySettings(settings)
|
|
self.m_webPage.triggerAction(QWebPage.Stop)
|
|
|
|
if type(op) is dict:
|
|
operation = op.get('operation')
|
|
body = QByteArray(op.get('body'))
|
|
|
|
if operation == '':
|
|
operation = 'get'
|
|
|
|
networkOp = QNetworkAccessManager.CustomOperation
|
|
operation = operation.lower()
|
|
if operation == 'get':
|
|
networkOp = QNetworkAccessManager.GetOperation
|
|
elif operation == 'head':
|
|
networkOp = QNetworkAccessManager.HeadOperation
|
|
elif operation == 'put':
|
|
networkOp = QNetworkAccessManager.PutOperation
|
|
elif operation == 'post':
|
|
networkOp = QNetworkAccessManager.PostOperation
|
|
elif operation == 'delete':
|
|
networkOp = QNetworkAccessManager.DeleteOperation
|
|
|
|
if networkOp == QNetworkAccessManager.CustomOperation:
|
|
self.m_mainFrame.evaluateJavaScript('console.error("Unknown network operation: %s");' % operation)
|
|
return
|
|
|
|
self.m_mainFrame.load(QNetworkRequest(QUrl(address)), networkOp, body)
|
|
|
|
@pyqtProperty('QVariantMap')
|
|
def paperSize(self):
|
|
return self.m_paperSize
|
|
|
|
@paperSize.setter
|
|
def paperSize(self, size):
|
|
self.m_paperSize = size
|
|
|
|
@pyqtSlot(str, result=bool)
|
|
def render(self, fileName):
|
|
if self.m_mainFrame.contentsSize() == '':
|
|
return False
|
|
|
|
fileInfo = QFileInfo(fileName)
|
|
path = QDir()
|
|
path.mkpath(fileInfo.absolutePath())
|
|
|
|
if fileName.lower().endswith('.pdf'):
|
|
return self.renderPdf(fileName)
|
|
|
|
image = self.renderImage()
|
|
|
|
return image.save(fileName)
|
|
|
|
@pyqtProperty('QVariantMap')
|
|
def viewportSize(self):
|
|
size = self.m_webPage.viewportSize()
|
|
result = {
|
|
'width': size.width(),
|
|
'height': size.height()
|
|
}
|
|
return result
|
|
|
|
@viewportSize.setter
|
|
def viewportSize(self, size):
|
|
names = ('width', 'height')
|
|
for item in names:
|
|
try:
|
|
globals()[item] = int(size[item])
|
|
if globals()[item] < 0:
|
|
globals()[item] = 0
|
|
except KeyError:
|
|
globals()[item] = getattr(self.m_webPage.viewportSize(), item)()
|
|
|
|
self.m_webPage.setViewportSize(QSize(width, height))
|
|
|
|
do_action('WebPage', Bunch(locals()))
|