ionic-framework/core/src/components/toggle/toggle.ios.scss

@import "./toggle.native";
@import "./toggle.ios.vars";

// iOS Toggle
// -----------------------------------------

:host {
  --track-background: #{$toggle-ios-background-color-off};
  --track-background-checked: #{ion-color(primary, base)};
  --border-radius: #{$toggle-ios-border-radius};
  --handle-background: #{$toggle-ios-handle-background-color};
  --handle-background-checked: #{$toggle-ios-handle-background-color};
  --handle-border-radius: #{$toggle-ios-handle-border-radius};
  --handle-box-shadow: #{$toggle-ios-handle-box-shadow};
  --handle-height: #{$toggle-ios-handle-height};
  --handle-max-height: #{$toggle-ios-handle-max-height};
  --handle-width: #{$toggle-ios-handle-width};
  --handle-spacing: #{$toggle-ios-border-width};
  --handle-transition: #{$toggle-ios-transition};
}

// Toggle Native Wrapper
// ----------------------------------------------------------------

.native-wrapper .toggle-icon {
  width: $toggle-ios-width;
  height: $toggle-ios-height;

  /**
   * The handle box shadow should not
   * overflow outside of the track container.
   */
  overflow: hidden;
}

:host(.ion-color.toggle-checked) .toggle-icon {
  background: current-color(base);
}

:host(.toggle-activated) .toggle-switch-icon {
  opacity: 0;
}

// iOS Toggle Background Track: Unchecked
// ----------------------------------------------------------

.toggle-icon {
  // Needed to prevent visual glitch in safari/iOS
  // See https://github.com/ionic-team/ionic-framework/issues/14626
  transform: translate3d(0, 0, 0);

  transition: background-color $toggle-ios-transition-duration;
}

// iOS Toggle Inner Knob: Unchecked
// ----------------------------------------------------------

.toggle-inner {
  will-change: transform;
}

// iOS Toggle On/Off Labels
// ----------------------------------------------------------

.toggle-switch-icon {
  position: absolute;

  top: 50%;

  width: 11px;
  height: 11px;

  transform: translateY(-50%);

  transition: opacity $toggle-ios-transition-duration, color $toggle-ios-transition-duration;
}

.toggle-switch-icon {
  position: absolute;

  color: #{ion-color(dark, base)};
}

:host(.toggle-ltr) .toggle-switch-icon {
  /* stylelint-disable-next-line property-disallowed-list */
  right: 6px;
}

:host(.toggle-rtl) .toggle-switch-icon {
  /* stylelint-disable property-disallowed-list */
  right: initial;
  left: 6px;
  /* stylelint-enable property-disallowed-list */
}

:host(.toggle-checked) .toggle-switch-icon.toggle-switch-icon-checked {
  // The color contrast of iOS default on/off labels fails to meet WCAG 2.0.
  // We use Ionic's color contrast variables to meet the WCAG 2.0 standard (AAA).
  color: var(--ion-color-contrast, $toggle-ios-on-off-label-checked-color);
}

:host(.toggle-checked) .toggle-switch-icon:not(.toggle-switch-icon-checked) {
  opacity: 0;
}

.toggle-switch-icon-checked {
  position: absolute;

  width: 15px;
  height: 15px;
}

.toggle-switch-icon-checked-default {
  transform: translateY(-50%) rotate(90deg);
}

:host(.toggle-ltr) .toggle-switch-icon-checked {
  /* stylelint-disable property-disallowed-list */
  right: initial;
  left: 4px;
  /* stylelint-enable property-disallowed-list */
}

:host(.toggle-rtl) .toggle-switch-icon-checked {
  /* stylelint-disable-next-line property-disallowed-list */
  right: 4px;
}

// iOS Toggle Background Oval: Activated or Checked
// ----------------------------------------------------------

:host(.toggle-activated) .toggle-icon::before,
:host(.toggle-checked) .toggle-icon::before {
  transform: scale3d(0, 0, 0);
}

// iOS Toggle Background Oval: Activated and Checked
// ----------------------------------------------------------

:host(.toggle-activated.toggle-checked) .toggle-inner::before {
  transform: scale3d(0, 0, 0);
}

// iOS Toggle Inner Knob: Activated and Unchecked
// ----------------------------------------------------------

:host(.toggle-activated) .toggle-inner {
  width: calc(var(--handle-width) + 6px);
}

// iOS Toggle Inner Knob: Activated and Checked
// ----------------------------------------------------------

// when pressing down on the toggle and it IS checked
// the knob is wider so move it left by 6px in the transform

:host(.toggle-ltr.toggle-activated.toggle-checked) .toggle-icon-wrapper {
  // transform by 100% - handle width - 6px (width addition on activated)
  transform: translate3d(calc(100% - var(--handle-width) - 6px), 0, 0);
}

:host(.toggle-rtl.toggle-activated.toggle-checked) .toggle-icon-wrapper {
  // transform by -100% + handle width + 6px (width addition on activated)
  transform: translate3d(calc(-100% + var(--handle-width) + 6px), 0, 0);
}

// iOS Toggle: Disabled
// ----------------------------------------------------------
// The toggle and label should use the
// same opacity and match the other form
// controls

:host(.toggle-disabled) {
  opacity: $toggle-ios-disabled-opacity;
}