406 lines
13 KiB
Vue
406 lines
13 KiB
Vue
<script setup lang="ts">
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import type { Pausable } from '@vueuse/core'
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import type { DragElementState } from '../composables/useDragElements'
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import { clamp } from '@antfu/utils'
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import { useIntervalFn } from '@vueuse/core'
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import { computed, inject, ref, watchEffect } from 'vue'
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import { useSlideBounds } from '../composables/useSlideBounds'
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import { injectionSlideScale } from '../constants'
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import { slideHeight, slideWidth } from '../env'
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import { magicKeys } from '../state'
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const { data } = defineProps<{ data: DragElementState }>()
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const { dragId, zoom, autoHeight, x0, y0, width, height, rotate, isArrow } = data
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const slideScale = inject(injectionSlideScale, ref(1))
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const scale = computed(() => slideScale.value * zoom.value)
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const { left: slideLeft, top: slideTop } = useSlideBounds()
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const ctrlSize = 10
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const minSize = isArrow ? Number.NEGATIVE_INFINITY : 40
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const minRemain = 10
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const rotateRad = computed(() => rotate.value * Math.PI / 180)
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const rotateSin = computed(() => Math.sin(rotateRad.value))
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const rotateCos = computed(() => Math.cos(rotateRad.value))
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const boundingWidth = computed(() => width.value * rotateCos.value + height.value * rotateSin.value)
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const boundingHeight = computed(() => width.value * rotateSin.value + height.value * rotateCos.value)
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const boundingLeft = computed(() => x0.value - boundingWidth.value / 2)
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const boundingTop = computed(() => y0.value - boundingHeight.value / 2)
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const boundingRight = computed(() => x0.value + boundingWidth.value / 2)
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const boundingBottom = computed(() => y0.value + boundingHeight.value / 2)
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const arrowRevX = computed(() => isArrow && width.value < 0)
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const arrowRevY = computed(() => isArrow && height.value < 0)
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let currentDrag: {
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x0: number
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y0: number
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width: number
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height: number
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rotate: number
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dx0: number
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dy0: number
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ltx: number
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lty: number
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rtx: number
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rty: number
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lbx: number
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lby: number
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rbx: number
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rby: number
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} | null = null
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function onPointerdown(ev: PointerEvent) {
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if (ev.buttons !== 1)
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return
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ev.preventDefault()
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ev.stopPropagation()
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const el = ev.target as HTMLElement
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const elBounds = el.getBoundingClientRect()
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const cross1x = width.value * rotateCos.value - height.value * rotateSin.value
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const cross1y = width.value * rotateSin.value + height.value * rotateCos.value
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const cross2x = width.value * rotateCos.value + height.value * rotateSin.value
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const cross2y = -width.value * rotateSin.value + height.value * rotateCos.value
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currentDrag = {
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x0: x0.value,
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y0: y0.value,
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width: width.value,
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height: height.value,
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rotate: rotate.value,
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dx0: ev.clientX - (elBounds.left + elBounds.right) / 2,
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dy0: ev.clientY - (elBounds.top + elBounds.bottom) / 2,
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ltx: x0.value - cross1x / 2,
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lty: y0.value - cross1y / 2,
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rtx: x0.value + cross2x / 2,
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rty: y0.value - cross2y / 2,
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lbx: x0.value - cross2x / 2,
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lby: y0.value + cross2y / 2,
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rbx: x0.value + cross1x / 2,
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rby: y0.value + cross1y / 2,
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};
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(ev.currentTarget as HTMLElement).setPointerCapture(ev.pointerId)
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}
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function onPointermove(ev: PointerEvent) {
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if (!currentDrag || ev.buttons !== 1)
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return
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ev.preventDefault()
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ev.stopPropagation()
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const x = (ev.clientX - slideLeft.value - currentDrag.dx0) / scale.value
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const y = (ev.clientY - slideTop.value - currentDrag.dy0) / scale.value
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x0.value = clamp(x, -boundingWidth.value / 2 + minRemain, slideWidth.value + boundingWidth.value / 2 - minRemain)
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y0.value = clamp(y, -boundingHeight.value / 2 + minRemain, slideHeight.value + boundingHeight.value / 2 - minRemain)
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}
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function onPointerup(ev: PointerEvent) {
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if (!currentDrag)
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return
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ev.preventDefault()
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ev.stopPropagation()
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currentDrag = null
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}
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const ctrlClasses = `absolute border border-gray bg-gray dark:border-gray-500 dark:bg-gray-800 bg-opacity-30 `
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function getCornerProps(isLeft: boolean, isTop: boolean) {
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return {
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onPointerdown,
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onPointermove: (ev: PointerEvent) => {
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if (!currentDrag || ev.buttons !== 1)
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return
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ev.preventDefault()
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ev.stopPropagation()
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let x = (ev.clientX - slideLeft.value) / scale.value
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let y = (ev.clientY - slideTop.value) / scale.value
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const { ltx, lty, rtx, rty, lbx, lby, rbx, rby } = currentDrag
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const ratio = currentDrag.width / currentDrag.height
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const wMin = Math.max(minSize, minSize * ratio)
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function getSize(w1: number, h1: number) {
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if (ev.shiftKey) {
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const w = Math.max(w1, h1 * ratio, wMin)
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const h = w / ratio
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return { w, h }
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}
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else {
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return { w: Math.max(w1, minSize), h: Math.max(h1, minSize) }
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}
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}
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if (isLeft) {
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if (isTop) {
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const w1 = (rbx - x) * rotateCos.value + (rby - y) * rotateSin.value
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const h1 = -(rbx - x) * rotateSin.value + (rby - y) * rotateCos.value
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const { w, h } = getSize(w1, h1)
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x = rbx - w * rotateCos.value + h * rotateSin.value
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y = rby - w * rotateSin.value - h * rotateCos.value
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}
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else {
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const w1 = (rtx - x) * rotateCos.value - (y - rty) * rotateSin.value
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const h1 = (rtx - x) * rotateSin.value + (y - rty) * rotateCos.value
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const { w, h } = getSize(w1, h1)
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x = rtx - w * rotateCos.value - h * rotateSin.value
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y = rty - w * rotateSin.value + h * rotateCos.value
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}
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}
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else {
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if (isTop) {
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const w1 = (x - lbx) * rotateCos.value - (lby - y) * rotateSin.value
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const h1 = (x - lbx) * rotateSin.value + (lby - y) * rotateCos.value
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const { w, h } = getSize(w1, h1)
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x = lbx + w * rotateCos.value + h * rotateSin.value
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y = lby + w * rotateSin.value - h * rotateCos.value
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}
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else {
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const w1 = (x - ltx) * rotateCos.value + (y - lty) * rotateSin.value
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const h1 = -(x - ltx) * rotateSin.value + (y - lty) * rotateCos.value
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const { w, h } = getSize(w1, h1)
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x = ltx + w * rotateCos.value - h * rotateSin.value
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y = lty + w * rotateSin.value + h * rotateCos.value
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}
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}
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if (isLeft) {
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if (isTop) {
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x0.value = (x + rbx) / 2
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y0.value = (y + rby) / 2
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width.value = (rbx - x) * rotateCos.value + (rby - y) * rotateSin.value
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height.value = -(rbx - x) * rotateSin.value + (rby - y) * rotateCos.value
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}
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else {
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x0.value = (x + rtx) / 2
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y0.value = (y + rty) / 2
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width.value = (rtx - x) * rotateCos.value - (y - rty) * rotateSin.value
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height.value = (rtx - x) * rotateSin.value + (y - rty) * rotateCos.value
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}
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}
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else {
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if (isTop) {
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x0.value = (x + lbx) / 2
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y0.value = (y + lby) / 2
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width.value = (x - lbx) * rotateCos.value - (lby - y) * rotateSin.value
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height.value = (x - lbx) * rotateSin.value + (lby - y) * rotateCos.value
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}
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else {
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x0.value = (x + ltx) / 2
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y0.value = (y + lty) / 2
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width.value = (x - ltx) * rotateCos.value + (y - lty) * rotateSin.value
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height.value = -(x - ltx) * rotateSin.value + (y - lty) * rotateCos.value
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}
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}
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},
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onPointerup,
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style: {
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width: `${ctrlSize}px`,
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height: `${ctrlSize}px`,
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margin: `-${ctrlSize / 2}px`,
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left: isLeft !== arrowRevX.value ? '0' : undefined,
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right: isLeft !== arrowRevX.value ? undefined : '0',
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top: isTop !== arrowRevY.value ? '0' : undefined,
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bottom: isTop !== arrowRevY.value ? undefined : '0',
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cursor: isArrow ? 'move' : +isLeft + +isTop === 1 ? 'nesw-resize' : 'nwse-resize',
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borderRadius: isArrow ? '50%' : undefined,
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},
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class: ctrlClasses,
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}
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}
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function getBorderProps(dir: 'l' | 'r' | 't' | 'b') {
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return {
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onPointerdown,
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onPointermove: (ev: PointerEvent) => {
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if (!currentDrag || ev.buttons !== 1)
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return
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ev.preventDefault()
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ev.stopPropagation()
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const x = (ev.clientX - slideLeft.value) / scale.value
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const y = (ev.clientY - slideTop.value) / scale.value
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const { ltx, lty, rtx, rty, lbx, lby, rbx, rby } = currentDrag
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if (dir === 'l') {
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const rx = (rtx + rbx) / 2
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const ry = (rty + rby) / 2
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width.value = Math.max((rx - x) * rotateCos.value + (ry - y) * rotateSin.value, minSize)
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x0.value = rx - width.value * rotateCos.value / 2
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y0.value = ry - width.value * rotateSin.value / 2
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}
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else if (dir === 'r') {
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const lx = (ltx + lbx) / 2
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const ly = (lty + lby) / 2
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width.value = Math.max((x - lx) * rotateCos.value + (y - ly) * rotateSin.value, minSize)
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x0.value = lx + width.value * rotateCos.value / 2
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y0.value = ly + width.value * rotateSin.value / 2
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}
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else if (dir === 't') {
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const bx = (lbx + rbx) / 2
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const by = (lby + rby) / 2
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height.value = Math.max((by - y) * rotateCos.value - (bx - x) * rotateSin.value, minSize)
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x0.value = bx + height.value * rotateSin.value / 2
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y0.value = by - height.value * rotateCos.value / 2
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}
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else if (dir === 'b') {
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const tx = (ltx + rtx) / 2
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const ty = (lty + rty) / 2
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height.value = Math.max((y - ty) * rotateCos.value - (x - tx) * rotateSin.value, minSize)
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x0.value = tx - height.value * rotateSin.value / 2
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y0.value = ty + height.value * rotateCos.value / 2
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}
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},
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onPointerup,
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style: {
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width: `${ctrlSize}px`,
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height: `${ctrlSize}px`,
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margin: `-${ctrlSize / 2}px`,
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left: dir === 'l' ? '0' : dir === 'r' ? `100%` : `50%`,
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top: dir === 't' ? '0' : dir === 'b' ? `100%` : `50%`,
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cursor: 'lr'.includes(dir) ? 'ew-resize' : 'ns-resize',
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borderRadius: '50%',
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},
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class: ctrlClasses,
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}
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}
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function getRotateProps() {
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return {
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onPointerdown,
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onPointermove: (ev: PointerEvent) => {
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if (!currentDrag || ev.buttons !== 1)
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return
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ev.preventDefault()
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ev.stopPropagation()
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const x = (ev.clientX - slideLeft.value - currentDrag.dx0) / scale.value - ctrlSize / 4
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const y = (ev.clientY - slideTop.value - currentDrag.dy0) / scale.value - ctrlSize / 4
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let angle = Math.atan2(y - y0.value, x - x0.value) * 180 / Math.PI + 90
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const commonAngles = [0, 90, 180, 270, 360]
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for (const a of commonAngles) {
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if (Math.abs(angle - a) < 5) {
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angle = a % 360
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break
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}
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}
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rotate.value = angle
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},
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onPointerup,
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style: {
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width: `${ctrlSize}px`,
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height: `${ctrlSize}px`,
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margin: `-${ctrlSize / 2}px`,
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left: '50%',
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top: '-20px',
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cursor: 'grab',
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borderRadius: '50%',
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},
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class: ctrlClasses,
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}
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}
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const moveInterval = 20
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const intervalFnOptions = {
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immediate: false,
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immediateCallback: false,
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}
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const moveLeft = useIntervalFn(() => {
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if (boundingRight.value <= minRemain)
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return
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x0.value--
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}, moveInterval, intervalFnOptions)
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const moveRight = useIntervalFn(() => {
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if (boundingLeft.value >= slideWidth.value - minRemain)
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return
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x0.value++
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}, moveInterval, intervalFnOptions)
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const moveUp = useIntervalFn(() => {
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if (boundingBottom.value <= minRemain)
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return
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y0.value--
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}, moveInterval, intervalFnOptions)
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const moveDown = useIntervalFn(() => {
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if (boundingTop.value >= slideHeight.value - minRemain)
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return
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y0.value++
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}, moveInterval, intervalFnOptions)
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watchEffect(() => {
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function shortcut(key: string, fn: Pausable) {
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if (magicKeys[key].value)
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fn.resume()
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else fn.pause()
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}
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shortcut('left', moveLeft)
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shortcut('right', moveRight)
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shortcut('up', moveUp)
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shortcut('down', moveDown)
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})
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</script>
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<template>
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<div
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v-if="Number.isFinite(x0)"
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id="drag-control-container"
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:data-drag-id="dragId"
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:style="{
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position: 'absolute',
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zIndex: 100,
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left: `${zoom * (x0 - Math.abs(width) / 2)}px`,
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top: `${zoom * (y0 - Math.abs(height) / 2)}px`,
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width: `${zoom * Math.abs(width)}px`,
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height: `${zoom * Math.abs(height)}px`,
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transformOrigin: 'center center',
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transform: `rotate(${rotate}deg)`,
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}"
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@pointerdown="onPointerdown"
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@pointermove="onPointermove"
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@pointerup="onPointerup"
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>
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<div class="absolute inset-0 z-nav dark:b-gray-400" :class="isArrow ? '' : 'b b-dark'">
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<template v-if="!autoHeight">
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<div v-bind="getCornerProps(true, true)" />
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<div v-bind="getCornerProps(false, false)" />
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<template v-if="!isArrow">
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<div v-bind="getCornerProps(true, false)" />
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<div v-bind="getCornerProps(false, true)" />
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</template>
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</template>
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<template v-if="!isArrow">
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<div v-bind="getBorderProps('l')" />
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<div v-bind="getBorderProps('r')" />
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<template v-if="!autoHeight">
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<div v-bind="getBorderProps('t')" />
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<div v-bind="getBorderProps('b')" />
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</template>
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<div v-bind="getRotateProps()" />
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<div
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class="absolute -top-15px w-0 b b-dashed b-dark dark:b-gray-400"
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:style="{
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left: 'calc(50% - 1px)',
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height: autoHeight ? '14px' : '10px',
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}"
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/>
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</template>
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</div>
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</div>
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</template>
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