circle-showing-progress-in-border.scss

/* SCSS source code for drawing progress circles
 * see also https://github.com/radiance/scss-progress-circle-border/
 */
@import url('https://fonts.googleapis.com/css2?family=Source+Sans+Pro&display=swap');

// minimal css reset for showing standalone example
html {
  box-sizing: border-box;
}
*,
*:before,
*:after {
  box-sizing: inherit;
}

// compute border for showing progress in credits-circle
@mixin helper-classes-for-progress-circle-border {
  @for $p from 1 through 100 {
    &.p-#{$p} {
      @include rotate-for-progress-circle-border($p);
    }
  }
}

@mixin rotate-for-progress-circle-border($percent) {
  @if $percent <= 50 {
    .left-half-circle { // fills 0 to
      border-color: $default-border-color !important; // overwrite info color to hide other half circle part
      z-index: 2;
      transform: rotate(0deg);
    }
    .right-half-circle { // fills 0 to 180
      transform: rotate(#{3.6 * $percent}deg);
    }
  }
  @if $percent > 50 {    // if  p>50, don't clip left half
    .left-half-circle { // fills -180 to 0
      transform: rotate(#{-180 + ($percent - 50) * 3.6}deg);
    }
    .right-half-circle { // fills 0 to 180
      transform: rotate(180deg);
    }
  }
}

$default-content-background-color: #fff;
$default-border-color: #ccc;
$info-color: #33f;

.progress-circle {
  display: block;
  height: 120px;
  min-height: 120px;
  min-width: 120px;
  width: 120px;
  margin: 2em;

  .progress-circle-border {
    border: 5px solid $default-border-color;
    border-radius: 100%;
    font-size: 120px;
    height: 120px;
    position: absolute;
    text-align: center;
    width: 120px;

    .left-half-circle,
    .right-half-circle {
      border: 5px solid $info-color;
      border-radius: 50%;
      clip: rect(0, .5em, 1em, 0); // clips the whole left half
      height: 120px;
      margin-top: -5px; // negative margin because of parents border
      margin-left: -5px; // negative margin because of parents border
      position: absolute;
      width: 120px;
    }

    .left-half-circle {
      clip: rect(0, .5em, 1em, 0); // clips the whole right half
    }
  }

  .progress-circle-content {
    align-items: center;
    background-color: $default-content-background-color;
    border: 0;
    border-radius: 100%;
    display: flex;
    flex-direction: column;
    font-family: 'Source Sans Pro', sans-serif;
    height: 110px;
    justify-content: center;
    margin: 5px;
    min-height: 110px;
    min-width: 110px;
    padding: 1em;
    position: absolute;
    text-align: center;
    width: 110px;
    z-index: 2;
  }

  @include helper-classes-for-progress-circle-border; // call mixin at last
}