A material design slider and range slider with rtl support

flutter xlider material design

a material design slider and range slider with rtl support and lots of options and customizations for flutter.

get started with the material design

single slider

a single slider

flutterslider(
  values: [300],
  max: 500,
  min: 0,
  ondragging: (lowervalue, uppervalue) {
    _lowervalue = lowervalue;
    _uppervalue = uppervalue;
    setstate(() {});
  },
)

to make slider right to left use rtl: true

 flutterslider(
  ...
  rtl: true,
  ...
)

range slider

a simple example of material design slider

flutterslider(
  values: [30, 420],
  rangeslider: true,
  max: 500,
  min: 0,
  ondragging: (lowervalue, uppervalue) {
    _lowervalue = lowervalue;
    _uppervalue = uppervalue;
    setstate(() {});
  },
)

handlers

you can customize handlers using handler and righthandler properties.
width and height are required for custom handlers, so we use sizedbox as a wrapper

if you use rangeslider then you should define righthandler as well if you want to customize handlers

here there is a range slider with customized handlers and trackbars

flutterslider(
  ...
  handler: sizedbox(
    width: 20,
    height: 50,
    child: container(
      child: icon(
        icons.view_headline,
        color: colors.black54,
        size: 13,
      ),
      decoration: boxdecoration(
          color: colors.white,
          border: border.all(color: colors.black.withopacity(0.12))),
    ),
  ),
  righthandler: sizedbox(
    width: 20,
    height: 50,
    child: container(
      child: icon(
        icons.view_headline,
        color: colors.black54,
        size: 13,
      ),
      decoration: boxdecoration(
          color: colors.white,
          border: border.all(color: colors.black.withopacity(0.12))),
    ),
  ),
  ...
)

handler scale animation

you can control the scale animation type of your handlers, it’s duration and it’s scale size using handleranimation
handleranimation accepts a fluttersliderhandleranimation class which has 4 properties as following

flutterslider(
  ...
    handleranimation: fluttersliderhandleranimation(
      curve: curves.elasticout,
      reversecurve: curves.bouncein,
      duration: duration(milliseconds: 500),
      scale: 1.5
    ),
  ...
)

if you don’t want scale animation, then just pass 1 to scale property
if you don’t want reversecurve, just ignore it. default is null

trackbars

to customize track bars you can use flutterslidertrackbar. you can see the details here

flutterslider(
  ...
    trackbar: flutterslidertrackbar(
      activetrackbarcolor: colors.redaccent,
      activetrackbarheight: 5,
      leftinactivetrackbarcolor: colors.greenaccent.withopacity(0.5),
    ),
  ...
)

tooltips

in order to customize your tooltips, you can use flutterslidertooltip class. you can see all properties here

flutterslider(
  ...
  tooltip: flutterslidertooltip(
    textstyle: textstyle(fontsize: 17, color: colors.white),
    boxstyle: flutterslidertooltipbox(
      decoration: boxdecoration(
        color: colors.redaccent.withopacity(0.7)
      )
    )
  ),
  ...
)

tooltip prefix

you can use leftprefix, leftsuffix, rightprefix, rightsuffix to add your desired widget around tooltip content.

flutterslider(
  ...
    tooltip: flutterslidertooltip(
      leftprefix: icon(icons.attach_money, size: 19, color: colors.black45,),
      rightsuffix: icon(icons.attach_money, size: 19, color: colors.black45,),
    ),
  ...
)

tooltip number format

you can customize tooltip numbers by using numberformat class
here is an example

flutterslider(
  ...
    tooltip: flutterslidertooltip(
      numberformat: intl.numberformat(),
      // numberformat: intl.compact(),
    ),
  ...
)

you can find more about numberformat

controls

jump

by default slider handlers move fluently, if you set jump to true, handlers will jump between intervals

flutterslider(
  ...
  jump: true,
  ...
)

divisions

the number of discrete divisions

flutterslider(
  ...
  divisions: 25,
  ...
)

ignore steps

if your configurations requires that some steps are not available, you can use ignoresteps property.
this property accepts a simple class to define from and to ranges.

flutterslider(
  ...
    ignoresteps: [
      fluttersliderignoresteps(from: 8000, to: 12000),
      fluttersliderignoresteps(from: 18000, to: 22000),
    ],
  ...
)

minimum distance

when using range slider, the minimum distance between two handlers can be defined using minimumdistance option

flutterslider(
  ...
    minimumdistance: 300,
  ...
)

maximum distance

this is the opposite of minimum distance, when using range slider, the maximum distance between two handlers can be defined using maximumdistance option

flutterslider(
  ...
    maximumdistance: 300,
  ...
)

always show tooltips

tooltips always displayed if this property is set to true. like above example

flutterslider(
  ...
  alwaysshowtooltip: true,
  ...
)

touch zone

you can control how big a handler’s touch area could be. by default touch zone is 2
the range is between 1 to 5

flutterslider(
  ...
  touchzone: 2,
  ...
)

to see the touchable area for handlers you set displaytesttouchzone to true and test your slider

flutterslider(
  ...
  displaytesttouchzone: true,
  ...
)

disabled

to disable your slider, you can use disabled.

flutterslider(
  ...
  disabled: true,
  ...
)

rtl

makes the slider right to left

flutterslider(
  ...
  rtl: true,
  ...
)

events

there are 3 events

ondragstarted: fires when drag starts
ondragcompleted fires when drag ends
ondragging keeps firing when dragging

all three of above functions returns two double values. lower value and upper value

flutterslider(
  ...
  ondragging: (lowervalue, uppervalue) {
    _lowervalue = lowervalue;
    _uppervalue = uppervalue;
    setstate(() {});
  },
  ...
)