6 QML asynchronous = true; cache = false; [1]
7 Insert properties at top of element declarations [1]
8 Non-visible items: set opacity to 0 [2]
10 Keep QML files small [1]
12 [1] http://sf2011.meego.com/program/sessions/performance-tips-and-tricks-qtqml-applications-0
13 [2] http://doc.qt.nokia.com/4.7/qdeclarativeperformance.html
16 from __future__ import with_statement
17 from __future__ import division
21 import util.qt_compat as qt_compat
22 QtCore = qt_compat.QtCore
23 QtGui = qt_compat.import_module("QtGui")
24 QtDeclarative = qt_compat.import_module("QtDeclarative")
27 _moduleLogger = logging.getLogger(__name__)
30 class DeclarativeView(QtDeclarative.QDeclarativeView):
33 QtDeclarative.QDeclarativeView.__init__(self)
35 closing = qt_compat.Signal()
37 def closeEvent(self, event):
42 def disable_default_window_painting(view):
44 See http://doc.qt.nokia.com/4.7-snapshot/qdeclarativeperformance.html
46 view.setAttribute(QtCore.Qt.WA_OpaquePaintEvent)
47 view.setAttribute(QtCore.Qt.WA_NoSystemBackground)
48 view.viewport().setAttribute(QtCore.Qt.WA_OpaquePaintEvent)
49 view.viewport().setAttribute(QtCore.Qt.WA_NoSystemBackground)
52 if __name__ == "__main__":