<template>
	<div class="container">
		<button type="button" class="btn btn-primary" @click="onRemoveEvent">移出事件</button>
	</div>
	<div id="container"></div>
</template>

<script setup lang="ts">
import { useWindowSize } from '@vueuse/core';
import { onMounted, ref } from 'vue';
import Konva from 'konva/lib';
import { Text } from 'konva/lib/shapes/Text';
import { Circle } from 'konva/lib/shapes/Circle';

const { width, height } = useWindowSize();
const circle = ref<Circle>();
const text = ref<Text>();
const count = ref(0);

const initial = () => {
	const stage = new Konva.Stage({ container: 'container', width: width.value, height: height.value });
	const layer = new Konva.Layer({ draggable: true });

	// 添加文字
	text.value = new Konva.Text({
		x: 10,
		y: 10,
		fontFamily: 'Calibri',
		fontSize: 20,
		text: '',
		fill: 'black',
	});
	layer.add(text.value);

	// 添加圆形
	circle.value = new Konva.Circle({
		x: stage.width() / 2,
		y: stage.height() / 2 + 10,
		radius: 70,
		fill: 'green',
		stroke: 'black',
		strokeWidth: 4,
	});
	layer.add(circle.value);

	// 添加事件
	circle.value?.on('click', function () {
		text.value?.text(`点击了：${count.value}`);
		count.value++;
	});

	stage.add(layer);
};

// 移出点击事件
const onRemoveEvent = () => {
	circle.value?.off('click');
	text.value?.text('移出事件');
};

onMounted(() => {
	initial();
});
</script>
