$v-splitpanel-splitter-size: round($v-unit-size/5) !default;


@mixin valo-splitpanel($primary-stylename : v-splitpanel) {

  // Disable splitter shadow (should most likely be a variable)
  $copy: $v-shadow-depth;
  $v-shadow-depth: 0%;

  // Round to even number
  $v-splitpanel-splitter-size: $v-splitpanel-splitter-size + $v-splitpanel-splitter-size%2;

  .#{$primary-stylename}-vertical,
  .#{$primary-stylename}-horizontal {
    overflow: hidden;
    white-space: nowrap;
  }

  .#{$primary-stylename}-hsplitter {
    width: $v-splitpanel-splitter-size;
  }

  .#{$primary-stylename}-hsplitter div,
  .#{$primary-stylename}-vsplitter div {
    @include valo-button-style;
    @include box-sizing(border-box);
    height: auto;
    padding: 0;
    border-radius: 0;
    position: absolute;
    z-index: 1;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    cursor: s-resize;
    cursor: row-resize;

    &:before {
      content: "";
      width: $v-unit-size;
      height: 0;
      border: 1px solid;
      $color: $v-button-background-color or $v-app-background-color;
      $shade: max($v-bevel-depth, 10%);
      $border-color1: scale-color($color, $lightness: -$shade, $saturation: -$shade/2);
      $border-color2: scale-color($color, $lightness: -$shade/2, $saturation: -$shade/4);
      border-color: $border-color1 $border-color2 $border-color2 $border-color1;
      position: absolute;
      top: 50%;
      left: 50%;
      margin-left: round(-$v-unit-size/2);
      margin-top: -1px;
    }
  }

  .#{$primary-stylename}-vsplitter {
    height: $v-splitpanel-splitter-size;
  }

  .#{$primary-stylename}-hsplitter div {
    cursor: e-resize;
    cursor: col-resize;
    $color: $v-button-background-color or $v-app-background-color;
    @include valo-gradient($color: $color, $direction: to right);

    &:before {
      width: 0;
      height: $v-unit-size;
      margin-left: -1px;
      margin-top: round(-$v-unit-size/2);
    }
  }

  .v-disabled [class$="splitter"] div {
    cursor: default;

    &:before {
      display: none;
    }
  }

  // Allow undefined/auto height for horizontal split

  .#{$primary-stylename}-horizontal {
    .#{$primary-stylename}-second-container {
      position: static !important;
      display: inline-block;
      margin-left: $v-splitpanel-splitter-size; /* Match to the width of the splitter element */
      vertical-align: top;
    }

    .#{$primary-stylename}-first-container {
      display: inline-block;
      vertical-align: top;
    }
  }

  $v-shadow-depth: $copy;

}






@mixin valo-splitpanel-small ($primary-stylename: v-splitpanel, $stylename: small) {
  .#{$primary-stylename}-vsplitter-#{$stylename},
  .#{$primary-stylename}-hsplitter-#{$stylename} {
    div {
      @include opacity(0);
      @include transition(opacity 200ms);
    }

    &:hover div {
      @include opacity(1);
    }
  }

  .#{$primary-stylename}-vsplitter-#{$stylename} {
    div {
      left: 40%;
      right: 40%;
      height: $v-splitpanel-splitter-size + 1px;
      top: round($v-splitpanel-splitter-size/-2);

      &:before {
        width: 50%;
        left: 25%;
        margin-left: 0;
      }
    }

    &:before {
      content: "";
      position: absolute;
      height: 1px;
      left: 0;
      right: 0;
      background: darken($v-app-background-color, max($v-bevel-depth/2, 10%));
    }
  }

  .#{$primary-stylename}-hsplitter-#{$stylename} {
    div {
      top: 40%;
      bottom: 40%;
      width: $v-splitpanel-splitter-size + 1px;
      left: round($v-splitpanel-splitter-size/-2);

      &:before {
        height: 50%;
        top: 25%;
        margin-top: 0;
      }
    }

    &:before {
      content: "";
      position: absolute;
      width: 1px;
      top: 0;
      bottom: 0;
      background: darken($v-app-background-color, max($v-bevel-depth/2, 10%));
    }
  }

  .#{$primary-stylename}-vertical .#{$primary-stylename}-second-container-#{$stylename} {
    margin-top: 1px;
    position: static !important;
  }

  .#{$primary-stylename}-horizontal .#{$primary-stylename}-second-container-#{$stylename} {
    margin-left: 1px;
  }
}