All files / src/components/Spinner/variants Dots.vue

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<script setup lang="ts">
import { computed } from "vue";
import { scaleSize, toCssSize } from "../../../utils/size";
 
interface Props {
  size?: string | number;
  color?: string;
  speed?: number;
}
 
const props = withDefaults(defineProps<Props>(), {
  size: 40,
  color: "currentColor",
  speed: 1,
});
 
const dotSize = computed(() => scaleSize(props.size, "/", 4));
const boxSize = computed(() => toCssSize(props.size));
// three dots of size/4 plus two gaps of size/8 fill exactly one `size`
const gapSize = computed(() => scaleSize(props.size, "/", 8));
 
const duration = computed(() => {
  return props.speed > 0 ? 1 / props.speed : 1;
});
 
const formattedDuration = computed(() => `${duration.value}s`);
 
const getAnimationDelay = (index: number) => {
  return `${index * duration.value * 0.15}s`;
};
</script>
 
<template>
  <div
    class="vslk-spinner-dots"
    :style="{ width: boxSize, height: boxSize, gap: gapSize, color: props.color }"
  >
    <span
      v-for="n in 3"
      :key="n"
      :style="{
        width: dotSize,
        height: dotSize,
        backgroundColor: props.color,
        animationDuration: formattedDuration,
        animationDelay: getAnimationDelay(n - 1),
      }"
    />
  </div>
</template>
 
<style scoped>
.vslk-spinner-dots {
  display: flex;
  align-items: center;
  justify-content: center;
}
 
.vslk-spinner-dots span {
  border-radius: 999px;
  animation-name: vslk-bounce;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}
 
@keyframes vslk-bounce {
  0%,
  80%,
  100% {
    transform: scale(0.5);
    opacity: 0.5;
  }
 
  40% {
    transform: scale(1);
    opacity: 1;
  }
}
</style>