AuroraMiddleware/qt5base-lts
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Lazy init of QWindow

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(cherry picked from commit a2c884b6d2fcc77f6aa5e7aaa0aa329f5bef0bbd)
This commit is contained in:
Jørgen Lind 2011-04-27 11:59:11 +02:00 committed by Samuel Rødal
parent d04aee22e7
commit dc897ca7d9
1 changed files with 33 additions and 11 deletions
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40
src/gui/kernel/qwindow_qpa.cpp
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@ -74,7 +74,7 @@ public:
Qt::WindowFlags windowFlags;
QWindow::SurfaceType surfaceType;
QWindow *parentWindow;
QPlatformWindow *platformWindow;
bool visible;
QWindowFormat requestedFormat;
@ -133,6 +133,15 @@ void QWindow::create()
d->windowFlags = d->platformWindow->setWindowFlags(d->windowFlags);
}
Q_ASSERT(d->platformWindow);
QObjectList childObjects = children();
for (int i = 0; i < childObjects.size(); i ++) {
QObject *object = childObjects.at(i);
if(object->isWindowType()) {
QWindow *window = static_cast<QWindow *>(object);
window->setParent(this);
}
}
}
WId QWindow::winId() const
@ -143,22 +152,35 @@ WId QWindow::winId() const
return d->platformWindow->winId();
}
/**
Sets the parent Window. This will lead to the windowing system managing the clip of the window, so it will be clipped to the parent window.
Setting parent to be 0(NULL) means map it as a top level window. If the parent window has grabbed its window system resources, then the current window will also grab its window system resources.
**/
void QWindow::setParent(QWindow *parent)
{
Q_D(QWindow);
if (QObject::parent() == parent) {
return;
}
//How should we support lazy init when setting parent
if (!parent->d_func()->platformWindow) {
const_cast<QWindow *>(parent)->create();
}
if (d->parent == parent)
return;
QObject::setParent(parent);
if (parent) {
if (parent->d_func()->platformWindow) {
if(!d->platformWindow) {
create();
}
d->platformWindow->setParent(parent->d_func()->platformWindow);
QObject::setParent(parent);
d->parent = parent;
}
} else {
d->parent = 0;
if (d->parentWindow) {
d->platformWindow->setParent(0);
}
}
}
void QWindow::setWindowFormat(const QWindowFormat &format)