96 lines
3.3 KiB
JavaScript
96 lines
3.3 KiB
JavaScript
import './drag.css';
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export default {
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bind(el, { name, value }, vnode) {
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switch (name) {
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case 'drag': {
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if (['left', 'right', 'top', 'bottom'].indexOf(value) == -1) return;
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// 创建边框子元素
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const border = document.createElement('div');
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border.classList.add("pseudo-border");
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el.appendChild(border);
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// 添加拖拽样式
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addDragStyle(el, value);
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// 添加拖拽事件
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addDragEvent(el, border);
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break;
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}
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}
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},
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// inserted()
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// update()
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// componentUpdated()
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// unbind()
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}
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function addDragEvent(el, border, direction) {
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// border.setAttribute('draggable', true)
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const onMouseMove = function (e) {
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console.log('move', e);
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}
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const onMouseUp = function (e) {
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console.log('up')
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border.removeEventListener('mousemove', onMouseMove);
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}
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border.addEventListener('mousedown', function (e) {
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console.log('down');
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document.body.removeEventListener('mouseup', onMouseUp)
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document.body.addEventListener('mouseup', onMouseUp)
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border.addEventListener('mousemove', onMouseMove);
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});
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// TODO: 有点bug
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// el.addEventListener('mousedown', function (e) {
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// console.log('mousedown', e);
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// const { clientX, clientY } = e;
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// const { left, top, width, height } = el.getBoundingClientRect();
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// const { offsetLeft, offsetTop } = el;
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// const startX = clientX;
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// const startY = clientY;
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// const startLeft = left;
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// const startTop = top;
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// const startWidth = width;
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// const startHeight = height;
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// const startOffsetLeft = offsetLeft;
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// const startOffsetTop = offsetTop;
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// const move = function (e) {
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// console.log('mousemove', e);
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// const { clientX, clientY } = e;
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// const offsetX = clientX - startX;
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// const offsetY = clientY - startY;
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// switch (direction) {
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// case 'left': {
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// el.style.left = startLeft + offsetX + 'px';
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// el.style.width = startWidth - offsetX + 'px';
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// break;
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// }
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// case 'right': {
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// el.style.width = startWidth + offsetX + 'px';
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// break;
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// }
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// case 'top': {
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// el.style.top = startTop + offsetY + 'px';
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// el.style.height = startHeight - offsetY + 'px';
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// break;
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// }
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// case 'bottom': {
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// el.style.height = startHeight + offsetY + 'px';
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// break;
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// }
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// }
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// }
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// const up = function (e) {
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// console.log('mouseup', e);
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// document.removeEventListener('mousemove', move);
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// document.removeEventListener('mouseup', up);
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// }
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// document.addEventListener('mousemove', move);
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// document.addEventListener('mouseup', up);
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// });
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}
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function addDragStyle(el, direction) {
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el.classList.add('v-drag-border-' + direction)
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} |