153 lines
		
	
	
		
			4.5 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			153 lines
		
	
	
		
			4.5 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
import { watch, computed, defineComponent, createVNode as _createVNode } from "vue";
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import { raf, cancelRaf } from "@vant/use";
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import { isObject, truthProp, numericProp, getSizeStyle, makeStringProp, makeNumberProp, makeNumericProp, createNamespace } from "../utils/index.mjs";
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const [name, bem] = createNamespace("circle");
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let uid = 0;
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const format = (rate) => Math.min(Math.max(+rate, 0), 100);
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function getPath(clockwise, viewBoxSize) {
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  const sweepFlag = clockwise ? 1 : 0;
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  return `M ${viewBoxSize / 2} ${viewBoxSize / 2} m 0, -500 a 500, 500 0 1, ${sweepFlag} 0, 1000 a 500, 500 0 1, ${sweepFlag} 0, -1000`;
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}
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const circleProps = {
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  text: String,
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  size: numericProp,
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  fill: makeStringProp("none"),
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  rate: makeNumericProp(100),
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  speed: makeNumericProp(0),
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  color: [String, Object],
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  clockwise: truthProp,
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  layerColor: String,
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  currentRate: makeNumberProp(0),
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  strokeWidth: makeNumericProp(40),
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  strokeLinecap: String,
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  startPosition: makeStringProp("top")
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};
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var stdin_default = defineComponent({
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  name,
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  props: circleProps,
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  emits: ["update:currentRate"],
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  setup(props, {
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    emit,
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    slots
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  }) {
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    const id = `van-circle-${uid++}`;
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    const viewBoxSize = computed(() => +props.strokeWidth + 1e3);
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    const path = computed(() => getPath(props.clockwise, viewBoxSize.value));
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    const svgStyle = computed(() => {
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      const ROTATE_ANGLE_MAP = {
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        top: 0,
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        right: 90,
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        bottom: 180,
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        left: 270
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      };
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      const angleValue = ROTATE_ANGLE_MAP[props.startPosition];
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      if (angleValue) {
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        return {
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          transform: `rotate(${angleValue}deg)`
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        };
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      }
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    });
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    watch(() => props.rate, (rate) => {
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      let rafId;
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      const startTime = Date.now();
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      const startRate = props.currentRate;
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      const endRate = format(rate);
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      const duration = Math.abs((startRate - endRate) * 1e3 / +props.speed);
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      const animate = () => {
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        const now = Date.now();
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        const progress = Math.min((now - startTime) / duration, 1);
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        const rate2 = progress * (endRate - startRate) + startRate;
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        emit("update:currentRate", format(parseFloat(rate2.toFixed(1))));
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        if (endRate > startRate ? rate2 < endRate : rate2 > endRate) {
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          rafId = raf(animate);
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        }
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      };
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      if (props.speed) {
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        if (rafId) {
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          cancelRaf(rafId);
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        }
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        rafId = raf(animate);
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      } else {
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        emit("update:currentRate", endRate);
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      }
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    }, {
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      immediate: true
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    });
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    const renderHover = () => {
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      const PERIMETER = 3140;
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      const {
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        strokeWidth,
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        currentRate,
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        strokeLinecap
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      } = props;
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      const offset = PERIMETER * currentRate / 100;
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      const color = isObject(props.color) ? `url(#${id})` : props.color;
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      const style = {
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        stroke: color,
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        strokeWidth: `${+strokeWidth + 1}px`,
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        strokeLinecap,
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        strokeDasharray: `${offset}px ${PERIMETER}px`
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      };
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      return _createVNode("path", {
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        "d": path.value,
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        "style": style,
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        "class": bem("hover"),
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        "stroke": color
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      }, null);
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    };
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    const renderLayer = () => {
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      const style = {
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        fill: props.fill,
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        stroke: props.layerColor,
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        strokeWidth: `${props.strokeWidth}px`
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      };
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      return _createVNode("path", {
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        "class": bem("layer"),
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        "style": style,
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        "d": path.value
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      }, null);
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    };
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    const renderGradient = () => {
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      const {
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        color
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      } = props;
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      if (!isObject(color)) {
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        return;
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      }
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      const Stops = Object.keys(color).sort((a, b) => parseFloat(a) - parseFloat(b)).map((key, index) => _createVNode("stop", {
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        "key": index,
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        "offset": key,
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        "stop-color": color[key]
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      }, null));
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      return _createVNode("defs", null, [_createVNode("linearGradient", {
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        "id": id,
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        "x1": "100%",
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        "y1": "0%",
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        "x2": "0%",
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        "y2": "0%"
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      }, [Stops])]);
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    };
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    const renderText = () => {
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      if (slots.default) {
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        return slots.default();
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      }
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      if (props.text) {
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        return _createVNode("div", {
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          "class": bem("text")
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        }, [props.text]);
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      }
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    };
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    return () => _createVNode("div", {
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      "class": bem(),
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      "style": getSizeStyle(props.size)
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    }, [_createVNode("svg", {
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      "viewBox": `0 0 ${viewBoxSize.value} ${viewBoxSize.value}`,
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      "style": svgStyle.value
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    }, [renderGradient(), renderLayer(), renderHover()]), renderText()]);
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  }
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});
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export {
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  circleProps,
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  stdin_default as default
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};
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