[Squeak-VMdev] 3-button mouse on OSX (was: Re: Gamma correction on OSX)

[Bert F. <be...@im...>]

Am 03.09.2004 um 05:18 schrieb John M McIntosh:

> Ok, under os-x running the Squeak VM standalone I find that
>
> button1 is red squeak mouse bit set to (4)
> button2 is blue cmd key  squeak mouse bit set to (1)
> button3 is yellow option key squeak mouse bit set to (2)
>
> yes?

This is what I see, too. The button numbers from left to right are 1 - 
3 - 2. Button3 is when you press the scroll wheel down.

> The squeak mouse bits are set by looking at which mouse button was 
> pressed from the Carbon mouse event.
>
> Now the fun thing here is that when you use Safari it has to map 
> button-3 to a cmd/option/cntrl key and mouse-down when it converts the 
> os-x event to
> a historical mac os mouse down event since that is what the Netscape 
> plugin interface is supplying. Therefore the issue is that button-3 is 
> turning into a ctrl-click versus option key-click.

Ah, so the problem is actually that in Squeak we define option-click to 
bring up the menu, whereas in the Finder and elsewhere it's ctrl-click.

>  Does the mouse supplier have an os-x driver they supply that lets you 
> control what the magic keyboard modifiers are?

Logitech does have one, but it is not application sensitive so I can 
only change the mapping globally. I removed all that nonsense functions 
and mapped each button to its native value. AFAICT the generic mouse 
driver just generates button events (buttons 1 to 8 in my case).

And the translation to modifiers happens in the browser itself? 
Apparently, Safari translates button3 and button2 to cmd-click and 
ctrl-click, while Firefox ignores button3, right button (button2) 
generates ctrl-click.

> What you might want to do is try running the Mac OS Classic vm by 
> opening up the Squeak VM application by showing the contents and 
> digging down to the classic VM and executing the "Squeak 3.7.5b1 
> Classic" application. Then observe the behavior and let me know.

Right button2 does ctrl-click. Middle button3 does nothing.

So we cannot actually do much about this. Except maybe for a preference 
to treat ctrl-click as yellow? I'm wondering if this should be in the 
VM or in the image ...

- Bert -