Purpose and Motivation

Fixes #6936

We had this problem before with TreeView, see #6521. This PR applies the same fix.

SharedImage is a typedef for QSharedPointer<QtCollider::Image>. Qt registers it as a MetaType with its full name QSharedPointer<QtCollider::Image>, so Q_INVOKABLE methods needs to use the same name, otherwise method calls fail with QMetaMethod::invoke: cannot convert formal parameter 0 from QSharedPointer<QtCollider::Image> to SharedImage.. Even if the type is the same, Qt gets confused about its name.

Here is a note from Qt docs:

Note: Do not use typedef or using for Q_PROPERTY types as these will confuse moc. This may make certain type comparisons fail.

For any other use than Q_INVOKABLE, SharedImage should be fine, so we can keep the typedef.
I decided to patch also when used with Q_PROPERTY, since Qt mentions it explicitly, even though those methods didn't fail.

You can use this code to test affected Widgets:

var image = Image("PATH/TO/YOUR/IMAGE");
View(bounds:300@300).layout_(VLayout(
	View().setBackgroundImage(image),
	Button().icon_(image),
	Menu(MenuAction("test").icon_(image))
)).front

Types of changes

• Bug fix

To-do list

• Code is tested
• All tests are passing
• This PR is ready for review