range.scss

@import "../../themes/ionic.globals";
@import "./range.vars.scss";

// Range
// --------------------------------------------------

:host {
  /**
   * @prop --bar-background: Background of the range bar
   * @prop --bar-background-active: Background of the active range bar
   * @prop --bar-height: Height of the range bar
   * @prop --bar-border-radius: Border radius of the range bar
   * @prop --height: Height of the range
   * @prop --knob-background: Background of the range knob
   * @prop --knob-border-radius: Border radius of the range knob
   * @prop --knob-box-shadow: Box shadow of the range knob
   * @prop --knob-size: Size of the range knob
   * @prop --pin-background: Background of the range pin (only available in MD mode)
   * @prop --pin-color: Color of the range pin (only available in MD mode)
   */
  --knob-handle-size: calc(var(--knob-size) * 2);

  display: flex;
  position: relative;

  flex: 3;
  align-items: center;

  font-family: $font-family-base;

  user-select: none;
  z-index: $z-index-item-input;
}

:host(.range-disabled) {
  pointer-events: none;
}

::slotted(ion-label) {
  flex: initial;
}

::slotted(ion-icon[slot]) {
  font-size: 24px;
}

.range-slider {
  position: relative;

  flex: 1;

  width: 100%;
  height: var(--height);

  contain: size layout style;

  cursor: grab;
  touch-action: pan-y;
}

:host(.range-pressed) .range-slider {
  cursor: grabbing;
}

.range-pin {
  position: absolute;

  background: current-color(base);
  color: current-color(contrast);

  text-align: center;
  box-sizing: border-box;
}

.range-knob-handle {
  @include position(calc((var(--height) - var(--knob-handle-size)) / 2), null, null, 0);
  @include margin-horizontal(calc(0px - var(--knob-handle-size) / 2), null);

  @include rtl() {
    /* stylelint-disable-next-line property-disallowed-list */
    left: unset;
  }

  display: flex;

  position: absolute;

  justify-content: center;

  width: var(--knob-handle-size);
  height: var(--knob-handle-size);

  text-align: center;

  &:active,
  &:focus {
    outline: none;
  }
}

.range-bar-container {
  @include border-radius(var(--bar-border-radius));
  @include position(calc((var(--height) - var(--bar-height)) / 2), null, null, 0);

  @include rtl() {
    /* stylelint-disable-next-line property-disallowed-list */
    left: unset;
  }

  position: absolute;

  width: 100%;
  height: var(--bar-height);
}

.range-bar {
  @include border-radius(var(--bar-border-radius));

  position: absolute;

  width: 100%;
  height: var(--bar-height);

  background: var(--bar-background);

  pointer-events: none;
}

.range-knob {
  @include border-radius(var(--knob-border-radius));
  @include position(calc(50% - var(--knob-size) / 2), null, null, calc(50% - var(--knob-size) / 2));

  @include rtl() {
    /* stylelint-disable-next-line property-disallowed-list */
    left: unset;
  }

  position: absolute;

  width: var(--knob-size);
  height: var(--knob-size);

  background: var(--knob-background);

  box-shadow: var(--knob-box-shadow);
  z-index: 2;
  pointer-events: none;
}

:host(.range-pressed) .range-bar-active {
  will-change: left, right;
}

// Range in Item
// ----------------------------

// .item ion-range .item-inner {
//   overflow: visible;

//   width: 100%;
// }

// .item ion-range .input-wrapper {
//   overflow: visible;

//   flex-direction: column;

//   width: 100%;
// }

:host(.in-item) {
  width: 100%;
}

/**
 * Range can be slotted
 * in components such as item and
 * toolbar which is why we do not
 * limit the below behavior to just ion-item.
 */
:host([slot="start"]),
:host([slot="end"]) {
  width: auto;
}

:host(.in-item) ::slotted(ion-label) {
  align-self: center;
}

// Range Wrapper
// --------------------------------------------------

.range-wrapper {
  display: flex;

  position: relative;

  flex-grow: 1;

  align-items: center;

  height: inherit;
}

// Range Label
// ----------------------------------------------------------------

::slotted([slot="label"]) {
  /**
   * Label text should not extend
   * beyond the bounds of the range.
   * However, we do not set the max
   * width to 100% because then
   * only the label would show and users
   * would not be able to see the range.
   */
  max-width: 200px;

  /**
   * This ensures that double tapping this text
   * clicks the <label> and focuses the range
   * when a screen reader is enabled.
   */
  pointer-events: none;

  text-overflow: ellipsis;

  white-space: nowrap;

  overflow: hidden;
}

/**
 * If no label text is placed into the slot
 * then the element should be hidden otherwise
 * there will be additional margins added.
 */
.label-text-wrapper-hidden {
  display: none;
}

// Range Native Wrapper
// ----------------------------------------------------------------

.native-wrapper {
  display: flex;

  flex-grow: 1;

  align-items: center;
}

// Range Label Placement - Start
// ----------------------------------------------------------------

/**
 * Label is on the left of the range in LTR and
 * on the right in RTL.
 */
:host(.range-label-placement-start) .range-wrapper {
  flex-direction: row;
}

:host(.range-label-placement-start) .label-text-wrapper {
  /**
   * The margin between the label and
   * the range should be on the end
   * when the label sits at the start.
   */
  @include margin(0, $form-control-label-margin, 0, 0);
}

// Range Label Placement - End
// ----------------------------------------------------------------

/**
 * Label is on the right of the range in LTR and
 * on the left in RTL.
 */
:host(.range-label-placement-end) .range-wrapper {
  flex-direction: row-reverse;
}

/**
 * The margin between the label and
 * the range should be on the start
 * when the label sits at the end.
 */
:host(.range-label-placement-end) .label-text-wrapper {
  @include margin(0, 0, 0, $form-control-label-margin);
}

// Range Label Placement - Fixed
// ----------------------------------------------------------------

:host(.range-label-placement-fixed) .label-text-wrapper {
  /**
   * The margin between the label and
   * the range should be on the end
   * when the label sits at the start.
   */
  @include margin(0, $form-control-label-margin, 0, 0);
}

/**
 * Label is on the left of the range in LTR and
 * on the right in RTL. Label also has a fixed width.
 */
:host(.range-label-placement-fixed) .label-text-wrapper {
  flex: 0 0 100px;

  width: 100px;
  min-width: 100px;
  max-width: 200px;
}

// Range Label Placement - Stacked
// ----------------------------------------------------------------

/**
 * Label is on top of the range.
 */
:host(.range-label-placement-stacked) .range-wrapper {
  flex-direction: column;

  align-items: stretch;
}

:host(.range-label-placement-stacked) .label-text-wrapper {
  @include transform-origin(start, top);
  @include transform(scale(#{$form-control-label-stacked-scale}));

  /**
  * The margin between the label and
  * the range should be on the bottom
  * when the label sits on top.
  */
  @include margin(null, 0, $form-control-label-margin, 0);

  /**
   * Label text should not extend
   * beyond the bounds of the range.
   */
  max-width: calc(100% / #{$form-control-label-stacked-scale});
}

:host(.in-item.range-label-placement-stacked) .label-text-wrapper {
  @include margin($range-item-label-margin-top, null, $form-control-label-margin, null);
}

:host(.in-item.range-label-placement-stacked) .native-wrapper {
  @include margin(null, null, $range-item-label-margin-bottom, null);
}