Re: [fltk.coredev] Gesture progress for 1.4?

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Re: Gesture progress for 1.4? Albrecht Schlosser 15:13 Oct 12 top right image
On 10/12/21 7:13 PM Rob McDonald wrote:

You've made great progress -- sorry I haven't been able to keep up.

Don't worry; thanks for your support.

I attempted to add a gesture responsive drawing to your test program -- but haven't quite gotten it working.  I don't normally work with FLTK on this level, so I'm probably doing something trivial wrong.

You should be able to see what I am trying to accomplish very quickly and hopefully find my error.

Yep, found it. The only "real" issue is in draw(): you're pushing the matrix at the wrong place in the code. You need to move 'fl_push_matrix();' up before 'fl_translate(...);' and it should work ... with some minor issues. Cute!

What I saw so far: the rotation is "inverted". I'm leaving this one up to you (unless this was intended).

There was also one problem with event delivery (missing FL_ZOOM_GESTURE in Fl_Group::handle(). I added it and now it works - at least as I'd expect.

See attached patch for both issues.

PS: Please don't top-post here, this makes the history of messages confusing. Thanks

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