[squeak-dev] Cursor position finding

Bert Freudenberg bert at freudenbergs.de
Tue Aug 12 21:33:41 UTC 2014

> On 12.08.2014, at 22:57, tim Rowledge <tim at rowledge.org> wrote:
> On 12-08-2014, at 12:28 PM, Bert Freudenberg <bert at freudenbergs.de> wrote:
>>> Surely we have a non-destructive way of finding current state on the cursor position, modifier state etc somewhere in there?
>> Try
>>    self currentEvent shiftPressed
>> or
>>    self currentEvent position
> Excellent; these are definitely making it work much better.
> It seems odd that all UserInputEvents understand shiftPressed but not anyButtonPressed. It’s easy enough to put a null method up there so it doesn’t dNU:, but does it make sense to actually pay attention to the buttons value for key events?
> Another irritating idiom from the old days is exemplified in this code -
>    Cursor eyeDropper showWhile: [
>        Sensor waitButton.
>        [Sensor anyButtonPressed] whileTrue: [
>            self color: (Display colorAt: Sensor cursorPoint).
>            w displayWorldSafely]].
> What’s our least awful way of handling this? I guess I should point out that it’s in a mouseUp: method and probably needs to be completely restructured.
> Modernising old code is *such* fun….

There is color-picking in Morphic too, but I can't look right now. 

- Bert -

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