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libkwineffects: Make SceneEffect fallback to root context

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QuickSceneEffect can also be instantiated by C++, for example that's
the case with the overview effect. In that case, qmlContext() is not
going to return a valid context because the effect has not been created
by a QQmlEngine. In that case, use the root context as the parent
context.
This commit is contained in:
Vlad Zahorodnii 2023-10-18 21:30:43 +03:00
parent aa57e9130b
commit 2c29dfd596
1 changed files with 9 additions and 2 deletions
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11
src/libkwineffects/kwinquickeffect.cpp
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@ -439,8 +439,15 @@ void QuickSceneEffect::addScreen(EffectScreen *screen)
});
incubator->setInitialProperties(properties);
QQmlContext *creationContext = d->delegate->creationContext();
QQmlContext *context = new QQmlContext(creationContext ? creationContext : qmlContext(this));
QQmlContext *parentContext;
if (QQmlContext *context = d->delegate->creationContext()) {
parentContext = context;
} else if (QQmlContext *context = qmlContext(this)) {
parentContext = context;
} else {
parentContext = d->delegate->engine()->rootContext();
}
QQmlContext *context = new QQmlContext(parentContext);
d->contexts[screen].reset(context);
d->incubators[screen].reset(incubator);