index.mjs 2.9 KB

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  1. import { addUnit } from "../../utils/dom/style.mjs";
  2. import { clamp } from "lodash-unified";
  3. import { onBeforeUnmount, onMounted, ref, watchEffect } from "vue";
  4. //#region ../../packages/hooks/use-draggable/index.ts
  5. const useDraggable = (targetRef, dragRef, draggable, overflow) => {
  6. const transform = {
  7. offsetX: 0,
  8. offsetY: 0
  9. };
  10. const isDragging = ref(false);
  11. const adjustPosition = (moveX, moveY) => {
  12. if (targetRef.value) {
  13. const { offsetX, offsetY } = transform;
  14. const targetRect = targetRef.value.getBoundingClientRect();
  15. const targetLeft = Math.max(targetRect.left, 0);
  16. const targetTop = Math.max(targetRect.top, 0);
  17. const targetWidth = targetRect.width;
  18. const targetHeight = targetRect.height;
  19. const clientWidth = document.documentElement.clientWidth;
  20. const clientHeight = document.documentElement.clientHeight;
  21. const minLeft = -targetLeft + offsetX;
  22. const minTop = -targetTop + offsetY;
  23. const maxLeft = clientWidth - targetLeft - targetWidth + offsetX;
  24. const maxTop = clientHeight - targetTop - (targetHeight < clientHeight ? targetHeight : 0) + offsetY;
  25. if (!overflow?.value) {
  26. moveX = clamp(moveX, minLeft, maxLeft);
  27. moveY = clamp(moveY, minTop, maxTop);
  28. }
  29. transform.offsetX = moveX;
  30. transform.offsetY = moveY;
  31. targetRef.value.style.transform = `translate(${addUnit(moveX)}, ${addUnit(moveY)})`;
  32. }
  33. };
  34. const onMousedown = (e) => {
  35. const downX = e.clientX;
  36. const downY = e.clientY;
  37. const { offsetX, offsetY } = transform;
  38. const onMousemove = (e) => {
  39. if (!isDragging.value) isDragging.value = true;
  40. const moveX = offsetX + e.clientX - downX;
  41. const moveY = offsetY + e.clientY - downY;
  42. adjustPosition(moveX, moveY);
  43. };
  44. const onMouseup = () => {
  45. isDragging.value = false;
  46. document.removeEventListener("mousemove", onMousemove);
  47. document.removeEventListener("mouseup", onMouseup);
  48. };
  49. document.addEventListener("mousemove", onMousemove);
  50. document.addEventListener("mouseup", onMouseup);
  51. };
  52. const onDraggable = () => {
  53. if (dragRef.value && targetRef.value) {
  54. dragRef.value.addEventListener("mousedown", onMousedown);
  55. window.addEventListener("resize", updatePosition);
  56. }
  57. };
  58. const offDraggable = () => {
  59. if (dragRef.value && targetRef.value) {
  60. dragRef.value.removeEventListener("mousedown", onMousedown);
  61. window.removeEventListener("resize", updatePosition);
  62. }
  63. };
  64. const resetPosition = () => {
  65. transform.offsetX = 0;
  66. transform.offsetY = 0;
  67. if (targetRef.value) targetRef.value.style.transform = "";
  68. };
  69. const updatePosition = () => {
  70. const { offsetX, offsetY } = transform;
  71. adjustPosition(offsetX, offsetY);
  72. };
  73. onMounted(() => {
  74. watchEffect(() => {
  75. if (draggable.value) onDraggable();
  76. else offDraggable();
  77. });
  78. });
  79. onBeforeUnmount(() => {
  80. offDraggable();
  81. });
  82. return {
  83. isDragging,
  84. resetPosition,
  85. updatePosition
  86. };
  87. };
  88. //#endregion
  89. export { useDraggable };
  90. //# sourceMappingURL=index.mjs.map