vuetify/lib/components/VColorPicker/VColorPickerCanvas.mjs.map

Vue Material Component Framework

{"version":3,"file":"VColorPickerCanvas.mjs","names":["useResizeObserver","clamp","convertToUnit","defineComponent","getEventCoordinates","useRender","computed","onMounted","ref","watch","VColorPickerCanvas","name","props","color","type","Object","disabled","Boolean","dotSize","Number","String","default","height","width","emits","hue","setup","emit","isInteracting","isOutsideUpdate","dotPosition","x","y","dotStyles","value","radius","parseInt","transform","canvasRef","canvasWidth","parseFloat","canvasHeight","resizeRef","entries","offsetParent","contentRect","updateDotPosition","rect","left","top","handleClick","e","clientX","clientY","getBoundingClientRect","handleMouseDown","preventDefault","window","addEventListener","handleMouseMove","handleMouseUp","coords","removeEventListener","h","s","v","a","updateCanvas","canvas","ctx","getContext","saturationGradient","createLinearGradient","addColorStop","fillStyle","fillRect","valueGradient","immediate","newVal","oldVal","flush","deep"],"sources":["../../../src/components/VColorPicker/VColorPickerCanvas.tsx"],"sourcesContent":["// Styles\nimport './VColorPickerCanvas.sass'\n\n// Composables\nimport { useResizeObserver } from '@/composables/resizeObserver'\n\n// Utilities\nimport { clamp, convertToUnit, defineComponent, getEventCoordinates, useRender } from '@/util'\nimport { computed, onMounted, ref, watch } from 'vue'\n\n// Types\nimport type { HSV } from '@/util'\nimport type { PropType } from 'vue'\n\nexport const VColorPickerCanvas = defineComponent({\n  name: 'VColorPickerCanvas',\n\n  props: {\n    color: {\n      type: Object as PropType<HSV | null>,\n    },\n    disabled: Boolean,\n    dotSize: {\n      type: [Number, String],\n      default: 10,\n    },\n    height: {\n      type: [Number, String],\n      default: 150,\n    },\n    width: {\n      type: [Number, String],\n      default: 300,\n    },\n  },\n\n  emits: {\n    'update:color': (color: HSV) => true,\n    'update:position': (hue: any) => true,\n  },\n\n  setup (props, { emit }) {\n    const isInteracting = ref(false)\n    const isOutsideUpdate = ref(false)\n    const dotPosition = ref({ x: 0, y: 0 })\n\n    const dotStyles = computed(() => {\n      const { x, y } = dotPosition.value\n      const radius = parseInt(props.dotSize, 10) / 2\n\n      return {\n        width: convertToUnit(props.dotSize),\n        height: convertToUnit(props.dotSize),\n        transform: `translate(${convertToUnit(x - radius)}, ${convertToUnit(y - radius)})`,\n      }\n    })\n\n    const canvasRef = ref<HTMLCanvasElement | null>()\n    const canvasWidth = ref(parseFloat(props.width))\n    const canvasHeight = ref(parseFloat(props.height))\n    const { resizeRef } = useResizeObserver(entries => {\n      if (!resizeRef.value?.offsetParent) return\n\n      const { width, height } = entries[0].contentRect\n\n      canvasWidth.value = width\n      canvasHeight.value = height\n    })\n\n    function updateDotPosition (x: number, y: number, rect: DOMRect) {\n      const { left, top, width, height } = rect\n      dotPosition.value = {\n        x: clamp(x - left, 0, width),\n        y: clamp(y - top, 0, height),\n      }\n    }\n\n    function handleClick (e: MouseEvent) {\n      if (props.disabled || !canvasRef.value) return\n\n      updateDotPosition(e.clientX, e.clientY, canvasRef.value.getBoundingClientRect())\n    }\n\n    function handleMouseDown (e: MouseEvent | TouchEvent) {\n      // To prevent selection while moving cursor\n      e.preventDefault()\n\n      if (props.disabled) return\n\n      isInteracting.value = true\n\n      window.addEventListener('mousemove', handleMouseMove)\n      window.addEventListener('mouseup', handleMouseUp)\n      window.addEventListener('touchmove', handleMouseMove)\n      window.addEventListener('touchend', handleMouseUp)\n    }\n\n    function handleMouseMove (e: MouseEvent | TouchEvent) {\n      if (props.disabled || !canvasRef.value) return\n\n      isInteracting.value = true\n\n      const coords = getEventCoordinates(e)\n\n      updateDotPosition(coords.clientX, coords.clientY, canvasRef.value.getBoundingClientRect())\n    }\n\n    function handleMouseUp () {\n      window.removeEventListener('mousemove', handleMouseMove)\n      window.removeEventListener('mouseup', handleMouseUp)\n      window.removeEventListener('touchmove', handleMouseMove)\n      window.removeEventListener('touchend', handleMouseUp)\n    }\n\n    watch(dotPosition, () => {\n      if (isOutsideUpdate.value) {\n        isOutsideUpdate.value = false\n        return\n      }\n\n      if (!canvasRef.value) return\n\n      const { x, y } = dotPosition.value\n\n      emit('update:color', {\n        h: props.color?.h ?? 0,\n        s: clamp(x, 0, canvasWidth.value) / canvasWidth.value,\n        v: 1 - clamp(y, 0, canvasHeight.value) / canvasHeight.value,\n        a: props.color?.a ?? 1,\n      })\n    })\n\n    function updateCanvas () {\n      if (!canvasRef.value) return\n\n      const canvas = canvasRef.value\n      const ctx = canvas.getContext('2d')\n\n      if (!ctx) return\n\n      const saturationGradient = ctx.createLinearGradient(0, 0, canvas.width, 0)\n      saturationGradient.addColorStop(0, 'hsla(0, 0%, 100%, 1)') // white\n      saturationGradient.addColorStop(1, `hsla(${props.color?.h ?? 0}, 100%, 50%, 1)`)\n      ctx.fillStyle = saturationGradient\n      ctx.fillRect(0, 0, canvas.width, canvas.height)\n\n      const valueGradient = ctx.createLinearGradient(0, 0, 0, canvas.height)\n      valueGradient.addColorStop(0, 'hsla(0, 0%, 100%, 0)') // transparent\n      valueGradient.addColorStop(1, 'hsla(0, 0%, 0%, 1)') // black\n      ctx.fillStyle = valueGradient\n      ctx.fillRect(0, 0, canvas.width, canvas.height)\n    }\n\n    watch(() => props.color?.h, updateCanvas, { immediate: true })\n    watch(() => [canvasWidth.value, canvasHeight.value], (newVal, oldVal) => {\n      updateCanvas()\n      dotPosition.value = {\n        x: dotPosition.value.x * newVal[0] / oldVal[0],\n        y: dotPosition.value.y * newVal[1] / oldVal[1],\n      }\n    }, { flush: 'post' })\n\n    watch(() => props.color, () => {\n      if (isInteracting.value) {\n        isInteracting.value = false\n        return\n      }\n\n      isOutsideUpdate.value = true\n\n      dotPosition.value = props.color ? {\n        x: props.color.s * canvasWidth.value,\n        y: (1 - props.color.v) * canvasHeight.value,\n      } : { x: 0, y: 0 }\n    }, { deep: true, immediate: true })\n\n    onMounted(() => updateCanvas())\n\n    useRender(() => (\n      <div\n        ref={ resizeRef }\n        class=\"v-color-picker-canvas\"\n        onClick={ handleClick }\n        onMousedown={ handleMouseDown }\n        onTouchstart={ handleMouseDown }\n      >\n        <canvas\n          ref={ canvasRef }\n          width={ canvasWidth.value }\n          height={ canvasHeight.value }\n        />\n        { props.color && (\n          <div\n            class={[\n              'v-color-picker-canvas__dot',\n              {\n                'v-color-picker-canvas__dot--disabled': props.disabled,\n              },\n            ]}\n            style={ dotStyles.value }\n          />\n        )}\n      </div>\n    ))\n\n    return {}\n  },\n})\n\nexport type VColorPickerCanvas = InstanceType<typeof 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