class WebPage(QObject): initialized = pyqtSignal() javaScriptAlertSent = pyqtSignal(str) javaScriptConsoleMessageSent = pyqtSignal(str, int, str) loadStarted = pyqtSignal() loadFinished = pyqtSignal(str) resourceReceived = pyqtSignal('QVariantMap') resourceRequested = pyqtSignal('QVariantMap') blankHtml = '<html><head></head><body></body></html>' def __init__(self, parent, args): super(WebPage, self).__init__(parent) # variable declarations self.m_paperSize = {} self.m_clipRect = QRect() self.m_libraryPath = '' self.m_scrollPosition = QPoint() self.setObjectName('WebPage') self.m_webPage = CustomPage(self) self.m_mainFrame = self.m_webPage.mainFrame() self.m_mainFrame.javaScriptWindowObjectCleared.connect(self.initialized) self.m_webPage.loadStarted.connect(self.loadStarted) 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.OfflineWebApplicationCacheEnabled, True) self.m_webPage.settings().setOfflineWebApplicationCachePath(QDesktopServices.storageLocation(QDesktopServices.DataLocation)) 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(self.blankHtml) # Custom network access manager to allow traffic monitoring self.m_networkAccessManager = NetworkAccessManager(self.parent(), args) self.m_webPage.setNetworkAccessManager(self.m_networkAccessManager) self.m_networkAccessManager.resourceRequested.connect(self.resourceRequested) self.m_networkAccessManager.resourceReceived.connect(self.resourceReceived) self.m_webPage.setViewportSize(QSize(400, 300)) do_action('WebPageInit') def applySettings(self, defaults): opt = self.m_webPage.settings() opt.setAttribute(QWebSettings.AutoLoadImages, defaults['loadImages']) opt.setAttribute(QWebSettings.PluginsEnabled, defaults['loadPlugins']) opt.setAttribute(QWebSettings.JavascriptEnabled, defaults['javascriptEnabled']) opt.setAttribute(QWebSettings.XSSAuditingEnabled, defaults['XSSAuditingEnabled']) opt.setAttribute(QWebSettings.LocalContentCanAccessRemoteUrls, defaults['localToRemoteUrlAccessEnabled']) if 'userAgent' in defaults: self.m_webPage.m_userAgent = defaults['userAgent'] if 'userName' in defaults: self.m_networkAccessManager.setUserName(defaults['userName']) if 'password' in defaults: self.m_networkAccessManager.setPassword(defaults['password']) def finish(self, ok): status = 'success' if ok else 'fail' self.loadFinished.emit(status) def mainFrame(self): return self.m_mainFrame def renderImage(self): contentsSize = self.m_mainFrame.contentsSize() contentsSize -= QSize(self.m_scrollPosition.x(), self.m_scrollPosition.y()) frameRect = QRect(QPoint(0, 0), contentsSize) if not self.m_clipRect.isEmpty(): frameRect = self.m_clipRect viewportSize = self.m_webPage.viewportSize() self.m_webPage.setViewportSize(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 # Different defaults. # OSX: 72, X11: 75(?), Windows: 96 pdf_dpi = 72 def renderPdf(self, fileName): p = QPrinter() p.setOutputFormat(QPrinter.PdfFormat) p.setOutputFileName(fileName) p.setResolution(self.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 = { 'A0': QPrinter.A0, 'A1': QPrinter.A1, 'A2': QPrinter.A2, 'A3': QPrinter.A3, 'A4': QPrinter.A4, 'A5': QPrinter.A5, 'A6': QPrinter.A6, 'A7': QPrinter.A7, 'A8': QPrinter.A8, 'A9': QPrinter.A9, 'B0': QPrinter.B0, 'B1': QPrinter.B1, 'B2': QPrinter.B2, 'B3': QPrinter.B3, 'B4': QPrinter.B4, 'B5': QPrinter.B5, 'B6': QPrinter.B6, 'B7': QPrinter.B7, 'B8': QPrinter.B8, 'B9': QPrinter.B9, 'B10': QPrinter.B10, 'C5E': QPrinter.C5E, 'Comm10E': QPrinter.Comm10E, 'DLE': QPrinter.DLE, 'Executive': QPrinter.Executive, 'Folio': QPrinter.Folio, 'Ledger': QPrinter.Ledger, '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 stringToPointSize(self, string): units = ( ('mm', 72 / 25.4), ('cm', 72 / 2.54), ('in', 72.0), ('px', 72.0 / self.pdf_dpi / 2.54), ('', 72.0 / self.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 ## @pyqtSlot(str) def _appendScriptElement(self, scriptUrl): self.m_mainFrame.evaluateJavaScript(''' var el = document.createElement('script'); el.onload = function() { alert('%(scriptUrl)s'); }; el.src = '%(scriptUrl)s'; document.body.appendChild(el); ''' % {'scriptUrl': scriptUrl}) @pyqtProperty('QVariantMap') def clipRect(self): clipRect = self.m_clipRect result = { 'width': clipRect.width(), 'height': clipRect.height(), 'top': clipRect.top(), 'left': clipRect.left() } return result @clipRect.setter def clipRect(self, size): sizes = {'width': 0, 'height': 0, 'top': 0, 'left': 0} for item in sizes: try: sizes[item] = int(size[item]) if sizes[item] < 0: if item not in ('top', 'left'): sizes[item] = 0 except (KeyError, ValueError): sizes[item] = self.clipRect[item] self.m_clipRect = QRect(sizes['left'], sizes['top'], sizes['width'], sizes['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, result=bool) def injectJs(self, filePath): return injectJsInFrame(filePath, self.parent().m_scriptEncoding.encoding, self.m_libraryPath, self.m_mainFrame) @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('data', '')) 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 if address.lower() == 'about:blank': self.m_mainFrame.setHtml(self.blankHtml) else: 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() def release(self): self.parent().m_pages.remove(self) sip.delete(self) @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(str) def libraryPath(self): return self.m_libraryPath @libraryPath.setter def libraryPath(self, dirPath): self.m_libraryPath = dirPath @pyqtSlot(str, 'QVariant', 'QVariant') def sendEvent(self, type_, arg1, arg2): type_ = type_.lower() if type_ in ('mousedown', 'mouseup', 'mousemove'): eventType = QMouseEvent.Type(QEvent.None) button = Qt.MouseButton(Qt.LeftButton) buttons = Qt.MouseButtons(Qt.LeftButton) if type_ == 'mousedown': eventType = QEvent.MouseButtonPress elif type_ == 'mouseup': eventType = QEvent.MouseButtonRelease elif type_ == 'mousemove': eventType = QEvent.MouseMove button = buttons = Qt.NoButton assert eventType != QEvent.None event = QMouseEvent(eventType, QPoint(arg1, arg2), button, buttons, Qt.NoModifier) QApplication.postEvent(self.m_webPage, event) QApplication.processEvents() return if type_ == 'click': self.sendEvent('mousedown', arg1, arg2) self.sendEvent('mouseup', arg1, arg2) @pyqtProperty('QVariantMap') def scrollPosition(self): scroll = self.m_scrollPosition result = { 'left': scroll.x(), 'top': scroll.y() } return result @scrollPosition.setter def scrollPosition(self, size): positions = {'left': 0, 'top': 0} for item in positions: try: positions[item] = int(size[item]) if positions[item] < 0: positions[item] = 0 except (KeyError, ValueError): positions[item] = self.scrollPosition[item] self.m_scrollPosition = QPoint(positions['left'], positions['top']) self.m_mainFrame.setScrollPosition(self.m_scrollPosition) @pyqtSlot(str, str) def uploadFile(self, selector, fileName): el = self.m_mainFrame.findFirstElement(selector) if el.isNull(): return self.m_webPage.m_uploadFile = fileName el.evaluateJavaScript(''' (function (el) { var ev = document.createEvent('MouseEvents'); ev.initEvent('click', true, true); el.dispatchEvent(ev); })(this) ''') @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): sizes = {'width': 0, 'height': 0} for item in sizes: try: sizes[item] = int(size[item]) if sizes[item] < 0: sizes[item] = 0 except (KeyError, ValueError): sizes[item] = self.viewportSize[item] self.m_webPage.setViewportSize(QSize(sizes['width'], sizes['height'])) do_action('WebPage')