diff -r 02ad912c8645 -r 6fd889391d2c Helpviewer/SpeedDial/PageThumbnailer.py
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Helpviewer/SpeedDial/PageThumbnailer.py Sat Feb 25 17:54:39 2012 +0100
@@ -0,0 +1,132 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2012 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing an object to create a thumbnail image of a web site.
+"""
+
+from PyQt4.QtCore import pyqtSignal, QObject, QSize, Qt, QUrl
+from PyQt4.QtGui import QPixmap, QImage, QPainter
+from PyQt4.QtWebKit import QWebPage
+
+from ..Network.NetworkAccessManagerProxy import NetworkAccessManagerProxy
+
+import Helpviewer.HelpWindow
+
+
+class PageThumbnailer(QObject):
+ """
+ Class implementing a thumbnail creator for web sites.
+
+ @signal thumbnailCreated(QPixmap) emitted after the thumbnail has been created
+ """
+ thumbnailCreated = pyqtSignal(QPixmap)
+
+ def __init__(self, parent=None):
+ """
+ Constructor
+
+ @param parent reference to the parent object (QObject)
+ """
+ super().__init__(parent)
+
+ self.__page = QWebPage(self)
+ self.__size = QSize(231, 130)
+ self.__loadTitle = False
+ self.__title = ""
+ self.__url = QUrl()
+
+ self.__proxy = NetworkAccessManagerProxy(self)
+ self.__proxy.setPrimaryNetworkAccessManager(
+ Helpviewer.HelpWindow.HelpWindow.networkAccessManager())
+ self.__page.setNetworkAccessManager(self.__proxy)
+
+ self.__page.mainFrame().setScrollBarPolicy(Qt.Horizontal, Qt.ScrollBarAlwaysOff)
+ self.__page.mainFrame().setScrollBarPolicy(Qt.Vertical, Qt.ScrollBarAlwaysOff)
+
+ # Full HD
+ # Every page should fit in this resolution
+ self.__page.setViewportSize(QSize(1920, 1080))
+
+ def setSize(self, size):
+ """
+ Public method to set the size of the image.
+
+ @param size size of the image (QSize)
+ """
+ if size.isValid():
+ self.__size = QSize(size)
+
+ def setUrl(self, url):
+ """
+ Public method to set the URL of the site to be thumbnailed.
+
+ @param url URL of the web site (QUrl)
+ """
+ if url.isValid():
+ self.__url = QUrl(url)
+
+ def url(self):
+ """
+ Public method to get the URL of the thumbnail.
+
+ @return URL of the thumbnail (QUrl)
+ """
+ return QUrl(self.__url)
+
+ def loadTitle(self):
+ """
+ Public method to check, if the title is loaded from the web site.
+
+ @return flag indicating, that the title is loaded (boolean)
+ """
+ return self.__loadTitle
+
+ def setLoadTitle(self, load):
+ """
+ Public method to set a flag indicating to load the title from
+ the web site.
+
+ @param load flag indicating to load the title (boolean)
+ """
+ self.__loadTitle = load
+
+ def title(self):
+ """
+ Public method to get the title of the thumbnail.
+
+ @return title of the thumbnail (string)
+ """
+ return self.__title
+
+ def start(self):
+ """
+ Public method to start the thumbnailing action.
+ """
+ self.__page.loadFinished.connect(self.__createThumbnail)
+ self.__page.mainFrame().load(self.__url)
+
+ def __createThumbnail(self, status):
+ """
+ Private slot creating the thumbnail of the web site.
+
+ @param status flag indicating a successful load of the web site (boolean)
+ """
+ if not status:
+ self.thumbnailCreated.emit(QPixmap())
+ return
+
+ self.__title = self.__page.mainFrame().title()
+
+ image = QImage(self.__page.viewportSize(), QImage.Format_ARGB32)
+ painter = QPainter(image)
+ self.__page.mainFrame().render(painter)
+ painter.end()
+
+ scaledImage = image.scaled(self.__size,
+ Qt.KeepAspectRatioByExpanding,
+ Qt.SmoothTransformation)
+
+ self.thumbnailCreated.emit(QPixmap.fromImage(scaledImage))
