Titlebar Settings

Based on my understanding, every platform window can have its titlebar removed completely (as follows on macOS).

For this, I propose a simple Window#setTitlebarVisible(boolean).

On Macos, there are a few other options (at least I did not see an obvious windows solution).

Hidden title (seems functionally equivalent to setting the title to an empty string)

(could be done on other platforms by setting title to empty string?)

Full content area / no titlebar background

These two could be handled simply with WindowMac#setTitleVisible(boolean) and WindowMac#setFullSizeContentView(boolean)

Finally, traffic light position can be set with WindowMac#setTrafficLightPosition(int, int).

It is worth noting that the two unified toolbar modes (small and large, below) allow setting a subtitle so it may be worth allowing this as well.

User drag regions

The simplest solution I see is to introduce the following event for users to decide whether a drag should begin:

class EventWindowDragRequested {
    public final int _x;
    public final int _y;
    
    // If true after event listener has handled, start dragging the window
    // on macOS this can simply use NSWindow performWindowDragWithEvent
    public boolean _performDrag = false
}

Notably no other events contain data returned to the dispatcher, let me know if it should be avoided for any reason.

Alternatively the window could track a list of user defined drag rects, but this seems more flexible.

Eager to hear feedback :)

API: Customize window titlebar #75

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tonskyopenedon Jul 30, 2021

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tonsky
openedon Jul 30, 2021