mdb-ui-kit/scss/mixins/_drawer.scss

// Mixins to allow creation of additional custom drawer sizes when using the defaults at the same time
//

//----
// Example 1: creates a media responsive kitchen-sink-drawer that pairs with mdb-drawer-open-lg and allows for triggers mdb-drawer-open && mdb-drawer-closed
//
// Used with <div class="mdb-layout-container mdb-drawer-fixed-left mdb-drawer-overlay-md mdb-drawer-open-lg kitchen-sink-drawer">
//
//    .kitchen-sink-drawer:not(.mdb-drawer-closed) {
//      @each $breakpoint in (xs lg) {
//        // xs gives us the static marker class i.e. mdb-drawer-open && mdb-drawer-closed, while lg gives us a responsive open/overlay
//        @include mdb-drawer-x-closed(500px);
//        @include mdb-drawer-x-open-up(500px, $breakpoint);
//      }
//      // Create a responsive overlay at mdb-drawer-overlay-md - this specificity is required
//      @include mdb-drawer-x-overlay-down(md);
//    }

//----
// Example 2: creates a NON-responsive kitchen-sink-drawer and allows for triggers mdb-drawer-open && mdb-drawer-closed
//
// Used with <div class="mdb-layout-container mdb-drawer-fixed-left mdb-drawer-open kitchen-sink-drawer-triggered">
//
//    .kitchen-sink-drawer-triggered:not(.mdb-drawer-closed) {
//      @include mdb-drawer-x-closed(500px); // closed by default, also can be triggered with mdb-drawer-closed
//      @include mdb-drawer-x-open(500px); // triggered with mdb-drawer-open
//      @include mdb-drawer-x-overlay(); // overlay by default, no other classes necessary
//    }

@mixin mdb-drawer-x-closed($size) {
  @each $side in (left right) {
    &.mdb-drawer-fixed-#{$side} {
      > .mdb-layout-drawer {
        // position
        top: 0;
        #{$side}: 0;

        width: $size;
        height: 100%;

        @if $side == left {
          transform: translateX(-$size - 10px); // initial position of drawer (closed), way off screen
        } @else {
          transform: translateX($size + 10px); // initial position of drawer (closed), way off screen
        }
      }

      > .mdb-layout-content {
        margin-#{$side}: 0;
      }
    }
  }
}

@mixin mdb-drawer-y-closed($size) {
  @each $side in (top bottom) {
    &.mdb-drawer-fixed-#{$side} {
      > .mdb-layout-drawer {
        // position
        #{$side}: 0;
        left: 0;

        width: 100%;
        height: $size;

        @if $side == top {
          transform: translateY(-$size - 10px); // initial position of drawer (closed), way off screen
        } @else {
          transform: translateY($size + 10px); // initial position of drawer (closed), way off screen
        }
      }

      > .mdb-layout-content {
        margin-#{$side}: 0;
      }
    }
  }
}

@function mdb-drawer-breakpoint-name($breakpoint) {
  // e.g. &, &-sm, &-md, &-lg
  $name: "&-#{$breakpoint}";
  @if $breakpoint == xs {
    $name: "&";
  }
  @return $name;
}

@mixin mdb-drawer-x-open($size) {
  @each $side in (left right) {

    &.mdb-drawer-fixed-#{$side} {
      // Push - drawer will push the header and content (default behavior)
      > .mdb-layout-header {
        width: calc(100% - #{$size});
        margin-#{$side}: $size;
      }

      > .mdb-layout-drawer {
        transform: translateX(0);
      }

      > .mdb-layout-content {
        margin-#{$side}: $size;
      }
    }
  }
}

@mixin mdb-drawer-y-open($size) {
  @each $side in (top bottom) {
    &.mdb-drawer-fixed-#{$side} {

      // 1. Push - drawer will push the header or content
      > .mdb-layout-header {
        @if $side == top { // only add margin-top on a header when the drawer is at the top
          margin-#{$side}: $size;
        }
      }

      > .mdb-layout-drawer {
        transform: translateY(0);
      }

      > .mdb-layout-content {
        @if $side == bottom { // only add margin-bottom on content when the drawer is at the bottom
          margin-#{$side}: $size;
        }
      }
    }
  }
}

// breakpoint based open to a particular size
@mixin mdb-drawer-x-open-up($size, $breakpoint) {
  // e.g. &, &-sm, &-md, &-lg
  $name: mdb-drawer-breakpoint-name($breakpoint);

  &.mdb-drawer-open {
    #{unquote($name)} { // mdb-drawer-open, mdb-drawer-open-sm, mdb-drawer-open-md, mdb-drawer-open-lg

      @if $breakpoint == xs {
        // mdb-drawer-open marker class (non-responsive)
        @include mdb-drawer-x-open($size);
      } @else {

        // responsive class
        @include media-breakpoint-up($breakpoint) {
          // mdb-drawer-fixed-(left and right) styles
          @include mdb-drawer-x-open($size);
        }
      }
    }
  }
}

// breakpoint based open to a particular size
@mixin mdb-drawer-y-open-up($size, $breakpoint) {
  // e.g. &, &-sm, &-md, &-lg
  $name: mdb-drawer-breakpoint-name($breakpoint);

  &.mdb-drawer-open {
    #{unquote($name)} { // mdb-drawer-open, mdb-drawer-open-sm, mdb-drawer-open-md, mdb-drawer-open-lg

      @if $breakpoint == xs {
        // mdb-drawer-open marker class (non-responsive)
        @include mdb-drawer-y-open($size);
      } @else {

        // responsive class
        @include media-breakpoint-up($breakpoint) {
          // mdb-drawer-fixed-(left and right) styles
          @include mdb-drawer-y-open($size);
        }
      }
    }
  }
}

@mixin mdb-drawer-x-overlay() {
  @include mdb-layout-overlay-backdrop-in();

  @each $side in (left right) {
    &.mdb-drawer-fixed-#{$side} {
      > .mdb-layout-header,
      > .mdb-layout-content {
        width: 100%;
        margin-#{$side}: 0;
      }
    }
  }
}

@mixin mdb-drawer-y-overlay() {
  @include mdb-layout-overlay-backdrop-in();

  @each $side in (top bottom) {
    &.mdb-drawer-fixed-#{$side} {
      > .mdb-layout-header {
        @if $side == top { // only add margin-top on a header when the drawer is at the top
          margin-#{$side}: 0;
        }
      }

      > .mdb-layout-content {
        @if $side == bottom { // only add margin-bottom on content when the drawer is at the bottom
          margin-#{$side}: 0;
        }
      }
    }
  }
}

@mixin mdb-drawer-x-overlay-down($breakpoint) {
  // e.g. &, &-sm, &-md, &-lg
  $name: mdb-drawer-breakpoint-name($breakpoint);

  //
  // Overlay - left/right responsive overlay classes and marker class
  //
  &.mdb-drawer-overlay {
    #{unquote($name)} { // mdb-drawer-overlay, mdb-drawer-overlay-sm, mdb-drawer-overlay-md, mdb-drawer-overlay-lg

      // x - left/right

      @if $breakpoint == xs { // overlay marker class (non-responsive)

        // Must double up on the .mdb-drawer-overlay class to increase specificity otherwise the
        //  responsive mdb-drawer-open-* media queries above win (and overlay is ignored)
        &.mdb-drawer-overlay {
          @include mdb-drawer-x-overlay()
        }
      } @else {
        @include media-breakpoint-down($breakpoint) { // overlay responsive class
          @include mdb-drawer-x-overlay()
        }
      }
    }
  }
}

@mixin mdb-drawer-y-overlay-down($breakpoint) {
  // e.g. &, &-sm, &-md, &-lg
  $name: mdb-drawer-breakpoint-name($breakpoint);

  //
  // Overlay - top/bottom responsive overlay classes and marker class
  //
  &.mdb-drawer-overlay {
    #{unquote($name)} { // mdb-drawer-overlay, mdb-drawer-overlay-sm, mdb-drawer-overlay-md, mdb-drawer-overlay-lg
      //// y - top/bottom

      @if $breakpoint == xs { // overlay marker class (non-responsive)

        // Must double up on the .mdb-drawer-overlay class to increase specificity otherwise the
        //  responsive mdb-drawer-open-* media queries above win (and overlay is ignored)
        &.mdb-drawer-overlay {
          @include mdb-drawer-y-overlay();
        }
      } @else {
        @include media-breakpoint-down($breakpoint) { // overlay responsive class
          @include mdb-drawer-y-overlay();
        }
      }
    }
  }
}