Slider interface functionality

slider axis

creates a horisontal or vertical slider component. The slider returns a Slider handle that will report the position of the thumb between minimum and maximum value of the sliding area as a fraction.

slider2D

create a slider that can be moved in two dimensional space. Returns a handle that reports the position of the thumb in the normalised 2D space (0,0)..(1.0,1.0).

mkSlider ax dh

identical to slider, creating a one dimensional slider, but parameterised on the sliding thumb to use.

mkSlider2D dh

offers same generalisation as mkSlider, parameterised over the thumb to use in the two dimensional case.

getSlider slider

returns the value of the slider by sampling (i.e., non-blocking) its current value.

waitSlider slider

block until the Slider thumb have been picked up and dropped at a new position. Returns the value of slider at its new position.

waitSliderMovement slider

wait until the slider thumb next moves. Returns a pair containing its new value and a Bool indicating if the thumb is still in dragging mode.

setSlider slider v

change the current value of the Slider. The slider thumb will move to a position that corresponds to the new value.

resizeThumb slider frac

set the proportion of the thumb size to the size of the overall sliding area. For the two dimensional slider, the thumb will be uniformly resized in both X and Y directions.

incSlider slider delta

increment the current value of the slider. Value has to be a be Num instance.

decSlider slider delta

same as above, reverse direction.

mapSlider f g slider

return a new `view' of a Slider, changing the values the Slider will report.

getSliderGauge slider

return the Gauge that underlies it all.

getSliderSize slider

returns size of the sliding area.

getThumbBBox slider

returns extent of thumb.