Hi all !
I would like your help because I would like to be able to deactivate the drawing on a canva as soon as the finger is removed.
I draw a line all the time, and as soon as I take my finger off the screen, I wish it was impossible to redraw until I hit a button to reactivate.
Do you have an idea ? Thank you !!
One work arround is when canvas.touched up set paint color to transparent. When button click then change it to another color
it could have been a good solution for me, but unfortunately, if I put the color on transparent, it will be like an eraser, and I want to freeze the canva because I don’t want the image to be modified anymore (because I calculate the percentage of coloration)
Transparent color I believe won’t work as eraser. You have to use canvas background color as paint color in order to work as eraser.
I will try this method, thanks.
So, the idea is good, only for me it does not go ^^
I don’t really know how to do it, I’ll explain my project to you: in just one touch (i.e. without lifting your finger), you have to color the area of the canva as much as possible. As soon as the finger is raised, it stops and the percentage is calculated.
But suddenly, as soon as I lift my finger, I can’t freeze the canva to avoid redrawing. If I set the color to transparent and rest my finger on the canva, the calculation process will start over, which I don’t want.
That’s why I’m looking for a way to deactivate the canva (like when we activate / deactivate a button for example)
Great ! Thank you for your help, it was very simple but I had not thought of it!
Everything works, I will be able to move forward: D
Thanks again !
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