2024-02-02 06:14 AM
Hello,
I'm working with a slider and ran into this problem.
When I define
setValueRange(0, 255);
and then I set the value
setValue(25);
so everything works. But I would like to turn the values on the slider. That means I will enter
setValueRange(255, 0);
At this moment, the restrictive conditions are poorly applied.
In the code for the slider I found the problem here:
int16_t Slider::valueToPosition(int value) const
{
value = MIN(valueRangeMax, value);
value = MAX(value, valueRangeMin);
...
In order for the slider to work for the range "0, 255" as well as for "255, 0", this code needs to be modified.
I used the following code. The original is in the comment and there is also code using if. Uncommented, the functional code is using a conditional expression, which may not be as readable:
int16_t Slider::valueToPosition(int value) const {
/*
// original
// value = MIN(valueRangeMax, value);
// value = MAX(value, valueRangeMin);
if (valueRangeMax > valueRangeMin) {
value = MIN(valueRangeMax, value);
value = MAX(value, valueRangeMin);
} else {
value = MIN(valueRangeMin, value);
value = MAX(value, valueRangeMax);
}
*/
value = (valueRangeMax > valueRangeMin) ?
(MIN(valueRangeMax, MAX(value, valueRangeMin))) :
(MIN(valueRangeMin, MAX(value, valueRangeMax)));
...
Hope this helps someone
JN