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Mouse handler on a morph

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Erwan Douaille

Mouse handler on a morph

Hi.

I would like to know if it's possible to add a mouse handler on a specific morph ?

I have a window and i would like to know the position of my mouse only in this window.

For exemple i also use :

self on: #mouseDown send: #captureMouse: to: self.

But it give me the mouse position in pharo environment and not only in my window.

Thanks :)

--
Douaille Erwan <[hidden email]>

Chris Muller-3

Re: Mouse handler on a morph

This is because, under rare circumstances, it is desirable to do
something in/on/to the desktop based on the position in the local
morph.

To get the local coordinates look for a method with the word "global"
in it -- globalToLocal: or something like that. It's in Squeak, not
sure whether this is still in Pharo though.. If anything, you could
always just subtract the upperleft coordinate of your window from the
MouseEvent's position..

On Wed, May 2, 2012 at 9:02 AM, Erwan Douaille <[hidden email]> wrote:

> Hi.
>
> I would like to know if it's possible to add a mouse handler on a specific
> morph ?
> I have a window and i would like to know the position of my mouse only in
> this window.
>
> For exemple i also use :
>
> self on: #mouseDown send: #captureMouse: to: self.
>
> But it give me the mouse position in pharo environment and not only in my
> window.
>
>
> Thanks :)
>
> --
> Douaille Erwan <[hidden email]>

Stéphane Ducasse

Re: Mouse handler on a morph

In reply to this post by Erwan Douaille

Erwan
I guess that you should get the mouse position and the window corner and compute the coordinates by yourself.

World activeHand position

Stef

> Hi.
>
> I would like to know if it's possible to add a mouse handler on a specific morph ?
> I have a window and i would like to know the position of my mouse only in this window.
>
> For exemple i also use :
>
> self on: #mouseDown send: #captureMouse: to: self.
>
> But it give me the mouse position in pharo environment and not only in my window.
>
>
> Thanks :)
>
> --
> Douaille Erwan <[hidden email]>

Erwan Douaille

Re: Mouse handler on a morph

In reply to this post by Chris Muller-3

Okay, but i didn't find anything with globalToLocal. And i've find another solution, just use soustraction for this problem :

captureMouse: event

Transcript cr;show: event position - self position.

That's work too :)

Thanks ;)

2012/5/2 Chris Muller <[hidden email]>

This is because, under rare circumstances, it is desirable to do
something in/on/to the desktop based on the position in the local
morph.

To get the local coordinates look for a method with the word "global"
in it -- globalToLocal: or something like that. It's in Squeak, not
sure whether this is still in Pharo though.. If anything, you could
always just subtract the upperleft coordinate of your window from the
MouseEvent's position..

On Wed, May 2, 2012 at 9:02 AM, Erwan Douaille <[hidden email]> wrote:
> Hi.
>
> I would like to know if it's possible to add a mouse handler on a specific
> morph ?
> I have a window and i would like to know the position of my mouse only in
> this window.
>
> For exemple i also use :
>
> self on: #mouseDown send: #captureMouse: to: self.
>
> But it give me the mouse position in pharo environment and not only in my
> window.
>
>
> Thanks :)
>
> --
> Douaille Erwan <[hidden email]>

--
Douaille Erwan <[hidden email]>

Gary Chambers-4

Re: Mouse handler on a morph

Hi,

I guess that properly you should do:

(self globalPointToLocal: event position) - self position

which should deal with the case of being embedded in a scroll pane or other transform

Regards, Gary

----- Original Message -----

From: [hidden email]

To: [hidden email] ; [hidden email]

Sent: Thursday, May 03, 2012 8:35 AM

Subject: Re: [Pharo-project] Mouse handler on a morph

Okay, but i didn't find anything with globalToLocal. And i've find another solution, just use soustraction for this problem :

captureMouse: event

Transcript cr;show: event position - self position.

That's work too :)

Thanks ;)

2012/5/2 Chris Muller <[hidden email]>

This is because, under rare circumstances, it is desirable to do
something in/on/to the desktop based on the position in the local
morph.

To get the local coordinates look for a method with the word "global"
in it -- globalToLocal: or something like that. It's in Squeak, not
sure whether this is still in Pharo though.. If anything, you could
always just subtract the upperleft coordinate of your window from the
MouseEvent's position..

On Wed, May 2, 2012 at 9:02 AM, Erwan Douaille <[hidden email]> wrote:

> Hi.
>
> I would like to know if it's possible to add a mouse handler on a specific
> morph ?
> I have a window and i would like to know the position of my mouse only in
> this window.
>
> For exemple i also use :
>
> self on: #mouseDown send: #captureMouse: to: self.
>
> But it give me the mouse position in pharo environment and not only in my
> window.
>
>
> Thanks :)
>
> --
> Douaille Erwan <[hidden email]>

--
Douaille Erwan <[hidden email]>