UserPresetHandler.setPreCallback does not work properly

[Casey Kolb]

I had to refactor the logic for a few controls to avoid some weird behaviors when loading presets, so I need add backwards compatibility for older presets and session. I've used setPreCallback successfully before, but it only works in very specific occasions, and the callback doesn't seem to function properly.

In this case, I need to invert the value of a slider (0-1) from older presets, but this code does not work:

const var up = Engine.createUserPresetHandler();

up.setPreCallback(function(data) {
    for (d in data.Content) {
        if (d.id == "cornerA_Sample_Start") {
            d.value = 1 - Engine.doubleToString(d.value, 3);
        }
    }
});

I've also tried every other permutation like d.value = 1 - d.value and for some reason it will never update the value of the slider if you try to do any math with it. In fact, you can't even Console.print() anything if you put it after an assignment like d.value = 1 - d.value, so it seems like the callback function aborts completely.

Note: If I use a hardcoded value like d.value = 0.5 it will work, but I need to be able to do logic on previous controls..

@Christoph-Hart Any ideas why this callback would function this way?

[Christoph Hart]

@Casey-Kolb Can you reproduce it with a minimal example?

It might be possible that a script error is not propagated to the console in this callback so if you do something wrong you won't get notified, but there is nothing special for this callback that would prevent doing dynamic things. If you use Control.print(d.value) before the assignment, what does it say?

[Casey Kolb]

@Christoph-Hart Let me try to do a minimal snippet. If you print Console.print(d.value) before the assignment it will work, but not after.

[d.healey]

@Casey-Kolb Did you call this function UserPresetHandler.setEnableUserPresetPreprocessing(bool processBeforeLoading, bool shouldUnpackComplexData) ?

[Casey Kolb]

@d-healey Yup!

[Casey Kolb]

@Christoph-Hart Here's a really simple snippet where it will only ever print "Before Assignment" and not "After Assignment" if you try to modify the preset value:

HiseSnippet 1249.3ocsV0saaaCElxIJq1saccn6dAicgCfqgcSW2vJBR7ucFsI0KNsa.ECcLhT1bQhTfjJItEAXWz62dRFvdBFv.1CxdC1c6xrCkjsjSbSSLP4Ex97K+NjmygmARgKUoDRjUw8mDRQV2xd3Dtdb6wXFG0uCx5F1CjTEUiZMIDqTTBxxZkGajZUbUT75e2pE1GycoYrPnWHXtzmxBX5LtC19ILe+dXBceVPNsev18cE71BeQDfjUrqiBwtGhGQ2EaTqfMxZstDlVHGpwZpBzokfLY3Xww7D8eASwNvmZHZfFBNJgMp8XlOYvznTgPVqNHKlWIIluq8NLBaF+rX+SiE3jYQ9y.qBWFjZbMfjUNHsZBjti8PWIKTmIwfmaZ2mqoROLbTmGJI5hJ74EraK.M35ZA3Co8j.wLKp7v50q5.eV+QkJAG2JsyQXoSTnylNc4iXbZMWIEhkmqnxj67uEyI9TYEiEQg0.Nc4XHlxz.9Fl.QFeTEsLhV0w7MyBPi1Xe+CfKzJdQbWMSvqPvZ75NuoTQOgzoBwgwcLrpkhdiHmzEyCTnFi3r4lNkeBWbPixwVNUNXhR3SqEJYbckxsnfKoNMA.MhG.9pL.EmbKRsiv9QTHna3buoTyqx4bYSO3D7c3wSKk78z0ezzfyQv2UnoOiWY8R.NKApbdQddKTlI5kB+3S7EH1TyHuLCqviBNfJq5DGSyTDRplOScsqVlpaxkQNEE79bl9YgzT5dBehICz7+KlWiRuMMY3oHDTUGme+Io42C8YDpDw.m7Q1w2tnXvm1a3m90+5u2B879cfjiotA7HrKgTolYBFqNzifNMIkMEs6PUGpEgPSi1hfPA2r+V2TmVmmro87EXMjutOCBZyVea67rZfNIq0zWr8jYDa+yaeLinGirrs5T.gFSYiFqMTkslEsI.41ocMaIEGCEKnCFMs6Vw0.O8eF2wzzfLt+wY+1Yyy89oJGuhOAJ71B1lJixl6jg3inshzZAu72DWyUcpjtmDh4JH0P0TAtJJvngG1WkoR7MmbwlaRQUWvmPFTh5yIJiMjTCwKHqQ8YF0jPV7VrGkCc1WrrNTep9cHqG9HgDNgLOWjWVJx5CQMg1RHgXatPd2nfjCBC32HlUB82atO2Ct5EffWFWLWu1FmaU8ZxGX+iw6wSYJcSnm5rylzcn5h9YlUIHaOwwCvDBjSdUsaHEKcG2BKaIh3DSj9xDA6.cDSNgNujrbnyKY5I8EjV5TSp9rRqa8dqmyJl9kuKWwDPnzSLccVKVQT.i.O1LPnXltZ4lt3OUZZ3P1qiaJ7l696O9ed8a2JH+.HHT.9j7yinh77XmDO4fGyOPoAr0O.Fn.Y8Y1vqWNDpGNxW6nND7iOieHkruHVezEeLFFCPPh7w54mMvLDTp.Cfy+fr4QWHWTOIOntFCLT+RGX3pBw6XOfocGuXLVXAXDZw9g.ioiY8w1c87nt5L.tpcueXYmo58r86IhL8y2ACW8PhfMzAXHzS0kB6NmS8Ul11ELORkPW2PaNAFR4jXhyfUpvFFZqTgMlJDR5bkhW4l7zlYPtaDyAvDOdt0h16Xncl8llsc8Z0MI5rW45ZB+60.gVrM2eIrYikvlGrD17kKgMObIr4qVBa95K0Fy37MizhfjxAfwftwurZYkLYabVH5+Aejij8.

[d.healey]

@Casey-Kolb I wonder if it's because Content is a keyword.

Oh I know what the problem is. Do Console.print(trace(data)) and see if you can spot the issue.

If you give up and just want the answer:

HiseSnippet 1206.3ocsV0saaaCElxIpq1cacEXO.DF6Ba.WW6lttgEDD+Sr2LZSpWTZ2.5FJXjns4hDo.EURcKBvvPue6UYOR61c0taWlcnnrjbhSWmwptvI77cNjemCO+vwRgKMJRHQVkOZdHEY8g1Ny4pY8mQXbzn8PV2zdrjFQUndyCIQQTOjk0FesF0p7lnju+Z2dDeB2klKBgdlf4ReLKfoxkNtyiX99CIdziXAEz9AcF4J38E9hXfIaX2BERbOgLkd.QqVIaj0MF3wTBoihnnQHqM6I7l6LSbF2n+yXQri8o5EsQNvFYDOT36oYrVJp+Llu23EdbDB1kw49+FF++Ss2m4wxjmGG9jD.btEEiGVkVldarD8ZWjdsJPuUPIqBTZSCktisiqjEpxQz74V1i3JpbBAB6EohQWTo9kr6K.M3plAjSnCkvhLKp8vVsZfgepuckJPnORgOkHwwg3cvC3SYbZSWIE7kmFQkl6+ugv87oxZZKhCaBRFvIfOkqA7anghL9zZJYLsAV+atEfF8I99GCWt0lDycULAulGQQpieckxUJOQHw07vLNVKrYJ+qWo7qqfS+XS.MZx7v6rCt5i3hiaWsdFHrIK9Wv1HgOsYnjwU0p1iB6ME2E31Td.roUAVkorWySI9wTv4aiuKNjHinC8EDUsTf5aiu28xzhEgIXGErwSwame3q3T6NAh2W5PWn54UL+dd8sWDJvB9ABE8I7Z0qniGfJWFZxjUhoiTRgex8yJf0Uax2lg03wAGSkMvF2cghPJ3x401WedcwxNWyEWAEE7Qbl5IgT90ULhRus00.orBTUkTA7woU.N9LOpDwfD8OvN4xGkP3zNI3e3W+ycQOczdPxyhsA1Q3TBoRES6.V6QOE5KYJrJauGM5DkHDZwzWDDJ35y25VpzNAlCMIS.tqOhANp9nuscQQsQuLuQ1m0Yd1hN+TmyXdpYYBv+RmYT1zY4MDwxNobzPnam1qsmTbFTVgNd5hdhkuAn9eqsgonA4R+8K9sKVV58SUN4KIRT5Mkr0EPU02GNjSo8hUJAu5WkTc1XAxfWFR3QPZQT2HXqhCzZLg3GkqRR6T4pMWmdFck8DxdLpuDTtXHgF7W.qcqLi554s5i3PJGlGrZr8n9T00fMjbpPBQH8PlhXoLaD30dzdBI3aK4xGDGXBDZxuUhHy5uSeudHjBH.fmmTH2p4VW5qw+Q4f3eL4LdLKR0E59lEaROgFq5OYVYX1ghyFS77fby2U6bnDo6rdDYOQL2S6oO2.rOzvzDgtLRdNzkQVDouBZky0E3YkX1+q004EU+72VnnBVDongNrWsnnuye7p2rK5pSMg40BuXehZ4g35WtjB.o5KM4TOcDRETyK9xl+2lr+tRw6XOlobmsZNVZEbD5z89fiouG5irGLYB0UkSvMsG98ued7C5PQrts59DX3Jj.XCEfNPKMWJb5bN0WOAxpjdVgYcK8ZcDvgx8RVbA7kB1Vu1JEr8BPT.wUJdgqYBi9EW2LQBvIdxiMKauudMNazhscqlsPAvi+dgqq18uKL9Z01b+0vlsVCadvZXymuF17v0vluXMr4Keq1ne2c2XkHvTN.BFOHYvlkk4InIYgn+gx7122

[Casey Kolb]

@d-healey Oh yes I had tried doubleToString in the example above for that very reason, and that didn't work. I wasn't even aware of parseFloat in HISE haha. I knew the string must have something to do with it but couldn't find a way to convert it without the function aborting. Nice one!

[Casey Kolb]

@Christoph-Hart Back in business! Working now with parseFloat

[d.healey]

@Casey-Kolb

Oh yes I had tried doubleToString

That does the opposite.

I wasn't even aware of parseFloat

Was only added a few weeks ago.

[Casey Kolb]

@d-healey said in UserPresetHandler.setPreCallback does not work properly:

@Casey-Kolb

Oh yes I had tried doubleToString

That does the opposite.

My brain is fried...how did I miss that?

Edit: I actually tried Math.round first and that didn't work.

[d.healey]

@Casey-Kolb I think these t-shirts are going to sell out fast!

[Matt_SF]

@d-healey but it creates a special bound between us all, doesn't it?