Mercurial Repositories > eric / file comparison
comparison: Helpviewer/HelpSnap.py
Helpviewer/HelpSnap.py
- changeset 634
- 7b84cbd2f752
- child 791
- 9ec2ac20e54e
equal
deleted
inserted
replaced
| 633:4bda1d24b8a7 | 634:7b84cbd2f752 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2010 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing functions to generate page previews. | |
| 8 """ | |
| 9 | |
| 10 from PyQt4.QtCore import QSize, Qt | |
| 11 from PyQt4.QtGui import QPixmap, QPainter | |
| 12 from PyQt4.QtWebKit import QWebFrame | |
| 13 | |
| 14 def renderTabPreview(page, w, h): | |
| 15 """ | |
| 16 Public function to render a pixmap of a page. | |
| 17 | |
| 18 @param page reference to the page to be previewed (QWebPage) | |
| 19 @param w width of the preview pixmap (integer) | |
| 20 @param h height of the preview pixmap (integer) | |
| 21 @return preview pixmap (QPixmap) | |
| 22 """ | |
| 23 oldSize = page.viewportSize() | |
| 24 width = page.mainFrame().contentsSize().width() | |
| 25 page.setViewportSize(QSize(width, int(width * h / w))) | |
| 26 pageImage = __render(page, page.viewportSize().width(), page.viewportSize().height()) | |
| 27 page.setViewportSize(oldSize) | |
| 28 return pageImage.scaled(w, h, Qt.IgnoreAspectRatio, Qt.SmoothTransformation) | |
| 29 | |
| 30 def __render(page, w, h): | |
| 31 """ | |
| 32 Private function to render a pixmap of given size for a web page. | |
| 33 | |
| 34 @param page reference to the page to be rendered (QWebPage) | |
| 35 @param w width of the pixmap (integer) | |
| 36 @param h height of the pixmap (integer) | |
| 37 @return rendered pixmap (QPixmap) | |
| 38 """ | |
| 39 # create the page image | |
| 40 pageImage = QPixmap(w, h) | |
| 41 pageImage.fill(Qt.transparent) | |
| 42 | |
| 43 # render it | |
| 44 p = QPainter(pageImage) | |
| 45 page.mainFrame().render(p, QWebFrame.ContentsLayer) | |
| 46 p.end() | |
| 47 | |
| 48 return pageImage |
