Just a short notice that the
platform_window branch is being merged back into the
4.7 branch in the lighthouse repository
. Note: it can take up to 12 hours before it is available on Gitorious.
This means that
QPlatformIntegration has slightly altered API:
One new function:
virtual QPlatformWindow *createPlatformWindow(QWidget *widget, WId winId = 0) const = 0;
createWindowSurface function has a new signature:
virtual QWindowSurface *createWindowSurface(QWidget *widget, WId winId) const = 0;
createPlatformWindow will be called before
QPlatformWindow can be retrieved from the widget using:
QPlatformWindow *QWidget::platformWindow() const
The WId can always be retrieved in the
createWindowSurface function by retrieving the
QPlatformWindow from the widget, but is supplied as an argument to give a stronger impression that it is now time to create the
QWindowSurface subclass for a specific window.
QWindowSurface in Lighthouse no longer has
setGeometry(const QRect &)
but instead it has the functions
resize(const QSize &)
resize() will be called after a call to
QPlatformWindow::setGeometry(const QRect &).
The resize function should not be that interesting for implementations where WindowManagers controlls the window surface, but if your managing the surface in the plugin then a nice pattern to follow would be to delete the painting surface in the resize function and allocating a new painting surface in beginPaint().
Since this is my first blogpost here it makes also sense for me to note that:
QBlittable lives in the lighthouse repository.
for the api of a blittable.
It is mainly being used in the DirectFb platform plugin, but there is also an example for how to use it with a normal graphicssystem:
and there is also a example to use it with QWS:
I'm still not overenthusiastic about the name QBlittable, but I believe the general API for using it will not change much.
Download the latest release here: www.qt.io/download.
Qt 5.12 was developed with a strong focus on quality and is a long-term-supported (LTS) release that will be supported for 3 years.
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