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ant-design-vue/components/modal/demo/modal-render.vue

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<docs>
---
order: 13
title:
zh-CN: 自定义渲染对话框
en-US: Custom modal content render
---
## zh-CN
自定义渲染对话框, 可通过 `vueuse` 来实现拖拽
## en-US
Custom modal content render. use `vueuse` implements draggable.
</docs>
<template>
<div>
<a-button type="primary" @click="showModal">Open Modal</a-button>
<a-modal ref="modalRef" v-model:open="open" :wrap-style="{ overflow: 'hidden' }" @ok="handleOk">
<p>Some contents...</p>
<p>Some contents...</p>
<p>Some contents...</p>
<template #title>
<div ref="modalTitleRef" style="width: 100%; cursor: move">Draggable Modal</div>
</template>
<template #modalRender="{ originVNode }">
<div :style="transformStyle">
<component :is="originVNode" />
</div>
</template>
</a-modal>
</div>
</template>
<script lang="ts">
import { defineComponent, ref, computed, CSSProperties, watch, watchEffect } from 'vue';
import { useDraggable } from '@vueuse/core';
export default defineComponent({
setup() {
const open = ref<boolean>(false);
const modalTitleRef = ref<HTMLElement>(null);
const showModal = () => {
open.value = true;
};
const { x, y, isDragging } = useDraggable(modalTitleRef);
const handleOk = (e: MouseEvent) => {
console.log(e);
open.value = false;
};
const startX = ref<number>(0);
const startY = ref<number>(0);
const startedDrag = ref(false);
const transformX = ref(0);
const transformY = ref(0);
const preTransformX = ref(0);
const preTransformY = ref(0);
const dragRect = ref({ left: 0, right: 0, top: 0, bottom: 0 });
watch([x, y], () => {
if (!startedDrag.value) {
startX.value = x.value;
startY.value = y.value;
const bodyRect = document.body.getBoundingClientRect();
const titleRect = modalTitleRef.value.getBoundingClientRect();
dragRect.value.right = bodyRect.width - titleRect.width;
dragRect.value.bottom = bodyRect.height - titleRect.height;
preTransformX.value = transformX.value;
preTransformY.value = transformY.value;
}
startedDrag.value = true;
});
watch(isDragging, () => {
if (!isDragging) {
startedDrag.value = false;
}
});
watchEffect(() => {
if (startedDrag.value) {
transformX.value =
preTransformX.value +
Math.min(Math.max(dragRect.value.left, x.value), dragRect.value.right) -
startX.value;
transformY.value =
preTransformY.value +
Math.min(Math.max(dragRect.value.top, y.value), dragRect.value.bottom) -
startY.value;
}
});
const transformStyle = computed<CSSProperties>(() => {
return {
transform: `translate(${transformX.value}px, ${transformY.value}px)`,
};
});
return {
open,
showModal,
handleOk,
modalTitleRef,
transformStyle,
};
},
});
</script>