Mercurial Repositories > eric / file comparison
comparison: WebBrowser/SpeedDial/PageThumbnailer.py
WebBrowser/SpeedDial/PageThumbnailer.py
- branch
- QtWebEngine
- changeset 4865
- 4adc526bc4b3
- child 4868
- 985d275502c8
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| 4864:00a215a67f25 | 4865:4adc526bc4b3 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2012 - 2016 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing an object to create a thumbnail image of a web site. | |
| 8 """ | |
| 9 | |
| 10 from __future__ import unicode_literals | |
| 11 | |
| 12 from PyQt5.QtCore import pyqtSignal, QObject, QSize, Qt, QUrl | |
| 13 from PyQt5.QtGui import QPixmap, QImage, QPainter | |
| 14 from PyQt5.QtWebKitWidgets import QWebPage | |
| 15 | |
| 16 from ..Network.NetworkAccessManagerProxy import NetworkAccessManagerProxy | |
| 17 | |
| 18 | |
| 19 class PageThumbnailer(QObject): | |
| 20 """ | |
| 21 Class implementing a thumbnail creator for web sites. | |
| 22 | |
| 23 @signal thumbnailCreated(QPixmap) emitted after the thumbnail has been | |
| 24 created | |
| 25 """ | |
| 26 thumbnailCreated = pyqtSignal(QPixmap) | |
| 27 | |
| 28 def __init__(self, parent=None): | |
| 29 """ | |
| 30 Constructor | |
| 31 | |
| 32 @param parent reference to the parent object (QObject) | |
| 33 """ | |
| 34 super(PageThumbnailer, self).__init__(parent) | |
| 35 | |
| 36 self.__page = QWebPage(self) | |
| 37 self.__size = QSize(231, 130) | |
| 38 self.__loadTitle = False | |
| 39 self.__title = "" | |
| 40 self.__url = QUrl() | |
| 41 | |
| 42 self.__proxy = NetworkAccessManagerProxy(self) | |
| 43 import Helpviewer.HelpWindow | |
| 44 self.__proxy.setPrimaryNetworkAccessManager( | |
| 45 Helpviewer.HelpWindow.HelpWindow.networkAccessManager()) | |
| 46 self.__page.setNetworkAccessManager(self.__proxy) | |
| 47 | |
| 48 self.__page.mainFrame().setScrollBarPolicy( | |
| 49 Qt.Horizontal, Qt.ScrollBarAlwaysOff) | |
| 50 self.__page.mainFrame().setScrollBarPolicy( | |
| 51 Qt.Vertical, Qt.ScrollBarAlwaysOff) | |
| 52 | |
| 53 # Full HD | |
| 54 # Every page should fit in this resolution | |
| 55 self.__page.setViewportSize(QSize(1920, 1080)) | |
| 56 | |
| 57 def setSize(self, size): | |
| 58 """ | |
| 59 Public method to set the size of the image. | |
| 60 | |
| 61 @param size size of the image (QSize) | |
| 62 """ | |
| 63 if size.isValid(): | |
| 64 self.__size = QSize(size) | |
| 65 | |
| 66 def setUrl(self, url): | |
| 67 """ | |
| 68 Public method to set the URL of the site to be thumbnailed. | |
| 69 | |
| 70 @param url URL of the web site (QUrl) | |
| 71 """ | |
| 72 if url.isValid(): | |
| 73 self.__url = QUrl(url) | |
| 74 | |
| 75 def url(self): | |
| 76 """ | |
| 77 Public method to get the URL of the thumbnail. | |
| 78 | |
| 79 @return URL of the thumbnail (QUrl) | |
| 80 """ | |
| 81 return QUrl(self.__url) | |
| 82 | |
| 83 def loadTitle(self): | |
| 84 """ | |
| 85 Public method to check, if the title is loaded from the web site. | |
| 86 | |
| 87 @return flag indicating, that the title is loaded (boolean) | |
| 88 """ | |
| 89 return self.__loadTitle | |
| 90 | |
| 91 def setLoadTitle(self, load): | |
| 92 """ | |
| 93 Public method to set a flag indicating to load the title from | |
| 94 the web site. | |
| 95 | |
| 96 @param load flag indicating to load the title (boolean) | |
| 97 """ | |
| 98 self.__loadTitle = load | |
| 99 | |
| 100 def title(self): | |
| 101 """ | |
| 102 Public method to get the title of the thumbnail. | |
| 103 | |
| 104 @return title of the thumbnail (string) | |
| 105 """ | |
| 106 return self.__title | |
| 107 | |
| 108 def start(self): | |
| 109 """ | |
| 110 Public method to start the thumbnailing action. | |
| 111 """ | |
| 112 self.__page.loadFinished.connect(self.__createThumbnail) | |
| 113 self.__page.mainFrame().load(self.__url) | |
| 114 | |
| 115 def __createThumbnail(self, status): | |
| 116 """ | |
| 117 Private slot creating the thumbnail of the web site. | |
| 118 | |
| 119 @param status flag indicating a successful load of the web site | |
| 120 (boolean) | |
| 121 """ | |
| 122 if not status: | |
| 123 self.thumbnailCreated.emit(QPixmap()) | |
| 124 return | |
| 125 | |
| 126 self.__title = self.__page.mainFrame().title() | |
| 127 | |
| 128 image = QImage(self.__page.viewportSize(), QImage.Format_ARGB32) | |
| 129 painter = QPainter(image) | |
| 130 self.__page.mainFrame().render(painter) | |
| 131 painter.end() | |
| 132 | |
| 133 scaledImage = image.scaled(self.__size, | |
| 134 Qt.KeepAspectRatioByExpanding, | |
| 135 Qt.SmoothTransformation) | |
| 136 | |
| 137 self.thumbnailCreated.emit(QPixmap.fromImage(scaledImage)) |
