how to get absolute position of a Widget on screen?

[steve3d]

I'm now using following code to get a Widget's absolute position on screen

int x = widget.getPositionX(), y = widget.getPositionY();
Widget parent = widget.getParent();
while(parent != 0)
{
x += parent.getPositionX();
y += parent.getPositionY();
parent = parent.getParent();
}

 

in very simple gui, these code will get correct position, but in some complex gui, it will get wrong position. so How can I get a widget's absolute position on screen?

[frustum]

Another trick is:

x = widget.getPositionX() + (gui.getMouseX() - widget.getMouseX());

y = widget.getPositionY() + (gui.getMouseY() - widget.getMouseY());

 

I will add functions to obtain screen space positions into the GUI system.

[steve3d]

thanks, this trick works!

[steve3d]

frustum, your code works like mine, there will be some widget which position can not be get correctly, see the attachement.

I want to get position of name WidgetEditLine, the caclulated position is wrong.

[steve3d]

here is the screenshot.

[steve3d]

more tests shows that if the widget is a child of tab, then the position is always offseted.

[manguste]

Can you point out what offset are you talking about or mark what is wrong in red? And it would be great if you can provide a test scene.