streampark-console/streampark-console-webapp/src/views/flink/app/components/AppResize.vue

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<script setup lang="ts">
  import { EllipsisOutlined } from '@ant-design/icons-vue';
  import { isNil } from 'lodash-es';
  import { ref, computed, onMounted, onUnmounted } from 'vue';
  defineOptions({ name: 'AppResize' });
  const props = withDefaults(
    defineProps<{
      resizeMin?: number;
      left: number;
      tableContainer: HTMLElement | null;
    }>(),
    {
      resizeMin: 100,
    },
  );
  const emit = defineEmits(['resizeEnd', 'update:left']);
  const domRef = ref<HTMLElement | null>(null);
  const getStyle = computed(() => {
    return {
      left: `${props.left + 10}px`,
      top: '50px',
    };
  });
  const isMove = ref(false);

  function getResizeLeft(e: MouseEvent): number {
    const getOffsetLeft = (elem: HTMLElement | null): number => {
      let innerOffsetLeft = 0;
      let currentElem = elem;
      do {
        if (!isNil(currentElem!.offsetLeft)) innerOffsetLeft += currentElem!.offsetLeft;
      } while ((currentElem = currentElem!.offsetParent as HTMLElement));
      return Math.floor(innerOffsetLeft);
    };

    const offsetLeft = getOffsetLeft(props.tableContainer);
    const maxResize = props.tableContainer!.getBoundingClientRect().width - 510;
    let newLeft = e.pageX - offsetLeft;
    if (newLeft > maxResize) newLeft = maxResize;

    if (newLeft < props.resizeMin) newLeft = props.resizeMin;

    return newLeft;
  }

  function startMove() {
    isMove.value = true;
  }

  function move(e: MouseEvent) {
    if (!isMove.value) return;
    e.preventDefault();
    const left = getResizeLeft(e);
    emit('update:left', left);
  }

  function mouseup(e: MouseEvent) {
    isMove.value = false;
    if (e.target !== domRef.value) {
      e.stopPropagation();
      emit('resizeEnd', { left: props.left });
    }
  }

  onMounted(() => {
    window.addEventListener('mouseup', mouseup);
    window.addEventListener('mousemove', move);
  });
  onUnmounted(() => {
    window.removeEventListener('mouseup', mouseup);
    window.removeEventListener('mousemove', move);
  });
</script>

<template>
  <div ref="domRef" class="resize app-vertical" :style="getStyle" @mousedown="startMove">
    <div class="resize-handle app-handle-vertical">
      <EllipsisOutlined />
    </div>
  </div>
</template>

<style lang="less">
  :root {
    --resize-border-color: #f0f0f0;
    --resize-handle-border: #e8e8e8;
    --resize-background-color: #fbfbfb;
  }

  [data-theme='dark']:root {
    --resize-border-color: #303030;
    --resize-handle-border: #303030;
    --resize-background-color: #1d1d1d;
  }

  .resize {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 10;
    background: transparent;

    &.app-vertical {
      width: 7px;
      height: calc(100% - 95px);
      border-left: 1px solid var(--resize-border-color);
      cursor: col-resize;
    }
  }

  .resize-handle {
    position: relative;
    top: -2px;
    left: 50%;
    width: 30px;
    height: 10px;
    margin-right: 15px;
    border: 1px solid var(--resize-handle-border);
    border-radius: 2px;
    background: var(--resize-background-color);
    line-height: 10px;
    text-align: center;
    pointer-events: none;

    &.app-handle-vertical {
      top: 50%;
      left: auto;
      margin-top: -15px;
      margin-right: auto;
      margin-left: 5px;
      transform: rotate(90deg);
      transform-origin: left top;
    }

    span {
      position: relative;
      top: -2px;
    }
  }
</style>