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Sat, Feb 5 2022 10:03 AM | Permanent Link |
erickengelke | This is a demo page of how to use the InteractJS Drag and Drop components in my Nice toolkit.
The demo page has two parts: One allows dragging of elements and we record the displacement.. The other allows drag 'n drop of elements onto and off of a surface, one element which is always accepted, and another which is never accepted. These demonostrations show how to use the components. Unlike typical EWB applications, a lot of the work is done by direct CSS manipulation. The original InteractJS libraries depend on a slew of CSS settings. I've converted some of that into function-based settings. Like the InteractJS.io own demo I use colours of objects' backgrounds so you can see what is happening. In practice you will want to modify various other CSS attributes, but this gives you a start if you need drag and drop. Erick EWB Programming Books and Component Library http://www.erickengelke.com |
Sat, Feb 5 2022 10:04 AM | Permanent Link |
erickengelke | erickengelke wrote:
This is a demo page of how to use the InteractJS Drag and Drop components in my Nice toolkit. The demo is available at: https://erickengelke.com/nice/samples.html EWB Programming Books and Component Library http://www.erickengelke.com |
Sat, Feb 5 2022 5:43 PM | Permanent Link |
Trinione | Good stuff!
Question: How to get the center of the object? Would this work? https://docwiki.embarcadero.com/CodeExamples/Alexandria/en/CenterPoint_(Delphi) |
Sat, Feb 5 2022 8:24 PM | Permanent Link |
erickengelke | Trinione wrote:
>Good stuff! Thanks >Question: How to get the center of the object? Would this work? I've added absx and absy. If you compute ( absx + width div 2 , absy + height div 2) you will have the centre. Erick EWB Programming Books and Component Library http://www.erickengelke.com |
Sat, Feb 5 2022 8:24 PM | Permanent Link |
erickengelke | Trinione wrote:
>Good stuff! Thanks >Question: How to get the center of the object? Would this work? I've added absx and absy. If you compute ( absx + width div 2 , absy + height div 2) you will have the centre. Erick EWB Programming Books and Component Library http://www.erickengelke.com |
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