feat: 首次提交

components/firstui/fui-circle/mpjs.js

@@ -0,0 +1,142 @@
+// 本文件由FirstUI授权予新疆天衡创新研究院有限公司（手机号： 1  86     14072 5 49，身份证尾号：5A07X5）专用，请尊重知识产权，勿私下传播，违者追究法律责任。
+// #ifdef MP
+
+export default {
+	data() {
+		return {
+			context: null,
+			start: 0
+		}
+	},
+	watch: {
+		percent(val) {
+			setTimeout(() => {
+				this.init();
+			}, 50)
+		},
+		w(val) {
+			setTimeout(() => {
+				this.init();
+			}, 50)
+		},
+		strokeWidth(val) {
+			setTimeout(() => {
+				this.init();
+			}, 50)
+		}
+	},
+	mounted() {
+		this.$nextTick(() => {
+			setTimeout(() => {
+				this.init();
+			}, 50)
+		})
+	},
+	methods: {
+		//初始化绘制
+		init(init) {
+			let start = this.activeMode === 'backwards' ? 0 : this.start;
+			start = start > this.percent ? 0 : start;
+			this.drawCircle(start);
+		},
+		//默认背景
+		drawDefaultCircle(ctx) {
+			let sw = Number(this.strokeWidth);
+			// #ifdef MP-ALIPAY
+			sw = sw * 4
+			// #endif
+			ctx.setLineWidth(sw);
+			ctx.setStrokeStyle(this.background);
+			let eAngle = Math.PI * 2 + Number(this.sAngle) * Math.PI;
+			this.drawArc(ctx, eAngle, true);
+		},
+		drawCircle(start) {
+			let ctx = this.context;
+			if (!ctx) {
+				ctx = uni.createCanvasContext(this.circleId, this);
+				this.context = ctx;
+			}
+			//绘制默认背景
+			this.defaultShow && this.drawDefaultCircle(ctx)
+			let sw = Number(this.strokeWidth)
+			// #ifdef MP-ALIPAY
+			sw = sw * 4
+			// #endif
+			ctx.setLineWidth(sw);
+			let gradient = this.foreground || this.primaryColor;
+			// #ifndef MP-KUAISHOU
+			if (this.gradient) {
+				gradient = ctx.createLinearGradient(0, 0, Number(this.w), 0);
+				gradient.addColorStop(0, this.gradient);
+				gradient.addColorStop(1, this.foreground || this.primaryColor);
+			}
+			// #endif
+			ctx.setStrokeStyle(gradient);
+			let percentage = Number(this.percent)
+			if (percentage > 0) {
+				start += Number(this.speed);
+				start = start > percentage ? percentage : start;
+			}
+			if (this.show) {
+				let si = Number(this.size)
+				// #ifdef MP-ALIPAY
+				si = si * 4
+				// #endif
+				ctx.setFontSize(si);
+				ctx.setFillStyle(this.color || this.primaryColor);
+				ctx.setTextAlign('center');
+				ctx.setTextBaseline('middle');
+				let percent = `${this.counterclockwise ? 100 - start : start}%`;
+				let radius = this.w / 2
+				// #ifdef MP-ALIPAY
+				radius = radius * 4
+				// #endif
+				ctx.fillText(percent, radius, radius);
+			}
+			if (percentage == 0 || (this.counterclockwise && start == 100)) {
+				ctx.draw();
+			} else {
+				let eAngle = ((2 * Math.PI) / 100) * start + Number(this.sAngle) * Math.PI;
+				this.drawArc(ctx, eAngle);
+			}
+			let time = 1000 / 60
+			// #ifdef MP-ALIPAY
+			time = time / 2
+			// #endif
+			setTimeout(() => {
+				this.start = start;
+				if (start == percentage) {
+					this.$emit('end', {
+						canvasId: this.circleId,
+						percent: start
+					});
+				} else {
+					this.drawCircle(start);
+				}
+				this.$emit('change', {
+					percent: start
+				});
+			}, time);
+		},
+		//创建弧线
+		drawArc(ctx, eAngle, def) {
+			ctx.setLineCap(this.lineCap);
+			ctx.beginPath();
+			let radius = this.w / 2;
+			let sw = Number(this.strokeWidth);
+			// #ifdef MP-ALIPAY
+			radius = radius * 4
+			sw = sw * 4
+			// #endif
+			ctx.arc(radius, radius, radius - sw, Number(this.sAngle) * Math.PI, eAngle, this.counterclockwise);
+			ctx.stroke();
+			!def && ctx.draw();
+		}
+	}
+}
+
+// #endif
+
+// #ifndef MP
+export default {}
+// #endif