dragStart()

in packages/core/src/models/TransformHelper.ts [545:600]

• 56 lines of code
• 12 McCabe index (conditional complexity)

  dragStart(props: ITransformHelperDragStartProps) {
    const dragNodes = props?.dragNodes
    const type = props?.type
    const direction = props?.direction
    if (type === 'resize') {
      const nodes = TreeNode.filterResizable(dragNodes)
      if (nodes.length) {
        this.dragging = true
        this.type = type
        this.direction = direction
        this.dragNodes = nodes
        this.calcDragStartStore(nodes)
        this.cursor.setDragType(CursorDragType.Resize)
      }
    } else if (type === 'translate') {
      const nodes = TreeNode.filterTranslatable(dragNodes)
      if (nodes.length) {
        this.dragging = true
        this.type = type
        this.direction = direction
        this.dragNodes = nodes
        this.calcDragStartStore(nodes)
        this.cursor.setDragType(CursorDragType.Translate)
      }
    } else if (type === 'rotate') {
      const nodes = TreeNode.filterRotatable(dragNodes)
      if (nodes.length) {
        this.dragging = true
        this.type = type
        this.dragNodes = nodes
        this.calcDragStartStore(nodes)
        this.cursor.setDragType(CursorDragType.Rotate)
      }
    } else if (type === 'scale') {
      const nodes = TreeNode.filterScalable(dragNodes)
      if (nodes.length) {
        this.dragging = true
        this.type = type
        this.dragNodes = nodes
        this.calcDragStartStore(nodes)
        this.cursor.setDragType(CursorDragType.Scale)
      }
    } else if (type === 'round') {
      const nodes = TreeNode.filterRoundable(dragNodes)
      if (nodes.length) {
        this.dragging = true
        this.type = type
        this.dragNodes = nodes
        this.calcDragStartStore(nodes)
        this.cursor.setDragType(CursorDragType.Round)
      }
    }
    if (this.dragging) {
      this.calcViewportNodes()
    }
  }