Mercurial Repositories > eric / file comparison
comparison: src/eric7/WebBrowser/SpeedDial/PageThumbnailer.py
src/eric7/WebBrowser/SpeedDial/PageThumbnailer.py
- branch
- eric7
- changeset 9209
- b99e7fd55fd3
- parent 8881
- 54e42bc2437a
- child 9221
- bf71ee032bb4
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| 9208:3fc8dfeb6ebe | 9209:b99e7fd55fd3 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2012 - 2022 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 PyQt6.QtCore import pyqtSignal, QObject, QSize, Qt, QUrl, QTimer | |
| 11 from PyQt6.QtGui import QPixmap, QImage, QPainter | |
| 12 from PyQt6.QtWebEngineWidgets import QWebEngineView | |
| 13 | |
| 14 | |
| 15 class PageThumbnailer(QObject): | |
| 16 """ | |
| 17 Class implementing a thumbnail creator for web sites. | |
| 18 | |
| 19 @signal thumbnailCreated(QPixmap) emitted after the thumbnail has been | |
| 20 created | |
| 21 """ | |
| 22 thumbnailCreated = pyqtSignal(QPixmap) | |
| 23 | |
| 24 def __init__(self, parent=None): | |
| 25 """ | |
| 26 Constructor | |
| 27 | |
| 28 @param parent reference to the parent object (QObject) | |
| 29 """ | |
| 30 super().__init__(parent) | |
| 31 | |
| 32 self.__size = QSize(231, 130) | |
| 33 self.__loadTitle = False | |
| 34 self.__title = "" | |
| 35 self.__url = QUrl() | |
| 36 | |
| 37 self.__view = QWebEngineView() | |
| 38 self.__view.setAttribute(Qt.WidgetAttribute.WA_DontShowOnScreen) | |
| 39 self.__view.resize(1920, 1080) | |
| 40 self.__view.show() | |
| 41 | |
| 42 def setSize(self, size): | |
| 43 """ | |
| 44 Public method to set the size of the image. | |
| 45 | |
| 46 @param size size of the image (QSize) | |
| 47 """ | |
| 48 if size.isValid(): | |
| 49 self.__size = QSize(size) | |
| 50 | |
| 51 def setUrl(self, url): | |
| 52 """ | |
| 53 Public method to set the URL of the site to be thumbnailed. | |
| 54 | |
| 55 @param url URL of the web site (QUrl) | |
| 56 """ | |
| 57 if url.isValid(): | |
| 58 self.__url = QUrl(url) | |
| 59 | |
| 60 def url(self): | |
| 61 """ | |
| 62 Public method to get the URL of the thumbnail. | |
| 63 | |
| 64 @return URL of the thumbnail (QUrl) | |
| 65 """ | |
| 66 return QUrl(self.__url) | |
| 67 | |
| 68 def loadTitle(self): | |
| 69 """ | |
| 70 Public method to check, if the title is loaded from the web site. | |
| 71 | |
| 72 @return flag indicating, that the title is loaded (boolean) | |
| 73 """ | |
| 74 return self.__loadTitle | |
| 75 | |
| 76 def setLoadTitle(self, load): | |
| 77 """ | |
| 78 Public method to set a flag indicating to load the title from | |
| 79 the web site. | |
| 80 | |
| 81 @param load flag indicating to load the title (boolean) | |
| 82 """ | |
| 83 self.__loadTitle = load | |
| 84 | |
| 85 def title(self): | |
| 86 """ | |
| 87 Public method to get the title of the thumbnail. | |
| 88 | |
| 89 @return title of the thumbnail (string) | |
| 90 """ | |
| 91 title = self.__title if self.__title else self.__url.host() | |
| 92 if not title: | |
| 93 title = self.__url.toString() | |
| 94 return title | |
| 95 | |
| 96 def start(self): | |
| 97 """ | |
| 98 Public method to start the thumbnailing action. | |
| 99 """ | |
| 100 self.__view.loadFinished.connect(self.__createThumbnail) | |
| 101 self.__view.load(self.__url) | |
| 102 | |
| 103 def __createThumbnail(self, status): | |
| 104 """ | |
| 105 Private slot creating the thumbnail of the web site. | |
| 106 | |
| 107 @param status flag indicating a successful load of the web site | |
| 108 (boolean) | |
| 109 """ | |
| 110 if not status: | |
| 111 self.thumbnailCreated.emit(QPixmap()) | |
| 112 return | |
| 113 | |
| 114 QTimer.singleShot(1000, self.__grabThumbnail) | |
| 115 | |
| 116 def __grabThumbnail(self): | |
| 117 """ | |
| 118 Private slot to grab the thumbnail image from the view. | |
| 119 """ | |
| 120 self.__title = self.__view.title() | |
| 121 | |
| 122 image = QImage(self.__view.size(), QImage.Format.Format_ARGB32) | |
| 123 painter = QPainter(image) | |
| 124 self.__view.render(painter) | |
| 125 painter.end() | |
| 126 | |
| 127 scaledImage = image.scaled( | |
| 128 self.__size, | |
| 129 Qt.AspectRatioMode.KeepAspectRatioByExpanding, | |
| 130 Qt.TransformationMode.SmoothTransformation) | |
| 131 | |
| 132 self.thumbnailCreated.emit(QPixmap.fromImage(scaledImage)) |
