695 lines
15 KiB
Vue
695 lines
15 KiB
Vue
<template>
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<div v-if="showPanel" class="crop-image-overlay" @click.self="close">
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<div class="crop-image-modal">
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<div class="modal-header">
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<h3>{{ $t("Canvas.cropImage") }}</h3>
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<button class="close-btn" @click="close">×</button>
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</div>
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<div class="modal-content">
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<!-- 图片剪切 -->
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<div class="image-clip" ref="el" v-if="data.url">
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<div
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class="box"
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ref="box"
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:style="{
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width: clipData.img_width + 'px',
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height: clipData.img_height + 'px',
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}"
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>
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<img :src="data.url" />
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<div class="shade"></div>
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<div
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ref="clipRef"
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class="clip"
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:style="{
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top: clipData.top + 'px',
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left: clipData.left + 'px',
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width: clipData.width + 'px',
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height: clipData.height + 'px',
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}"
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@mousedown.stop="clipMousedown"
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@touchstart.stop="clipMousedown"
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>
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<div class="img">
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<img
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:src="data.url"
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:style="{
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width: clipData.img_width + 'px',
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height: clipData.img_height + 'px',
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top: -clipData.top + 'px',
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left: -clipData.left + 'px',
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}"
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/>
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</div>
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<div
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class="top"
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@mousedown.stop="topMousedown"
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@touchstart.stop="topMousedown"
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></div>
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<div
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class="right"
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@mousedown.stop="rightMousedown"
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@touchstart.stop="rightMousedown"
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></div>
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<div
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class="bottom"
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@mousedown.stop="bottomMousedown"
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@touchstart.stop="bottomMousedown"
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></div>
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<div
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class="left"
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@mousedown.stop="leftMousedown"
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@touchstart.stop="leftMousedown"
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></div>
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<span
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class="top"
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@mousedown.stop="topMousedown"
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@touchstart.stop="topMousedown"
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></span>
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<span
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class="right"
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@mousedown.stop="rightMousedown"
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@touchstart.stop="rightMousedown"
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></span>
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<span
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class="bottom"
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@mousedown.stop="bottomMousedown"
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@touchstart.stop="bottomMousedown"
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></span>
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<span
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class="left"
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@mousedown.stop="leftMousedown"
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@touchstart.stop="leftMousedown"
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></span>
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</div>
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</div>
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</div>
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<!-- 空状态 -->
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<div class="empty-state" v-else>
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<div class="empty-icon">📷</div>
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<p>{{ $t("Canvas.NoPicture") }}</p>
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</div>
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</div>
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<div class="modal-footer">
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<div class="image-count"></div>
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<div class="image-submit gallery_btn" @click="confirm">
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{{ $t("Canvas.confirm") }}
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</div>
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</div>
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</div>
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</div>
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</template>
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<script setup lang="ts">
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import {
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ref,
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computed,
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defineProps,
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onDeactivated,
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reactive,
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onMounted,
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defineExpose,
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} from "vue";
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import { useI18n } from "vue-i18n";
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// Props
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const props = defineProps([]);
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const { t } = useI18n();
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var resolveFn: (value: string | PromiseLike<string>) => void;
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const showPanel = ref(false);
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const open = (url: string) => {
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showPanel.value = true;
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setImgage(url);
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return new Promise((resolve) => (resolveFn = resolve));
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};
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const close = () => {
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showPanel.value = false;
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};
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//提交选中的T图片
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const confirm = () => {
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close();
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const base64 = getImageBase64();
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resolveFn && resolveFn(base64);
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};
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const data = reactive({
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url: "",
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});
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const el = ref();
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const box = ref();
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const clipRef = ref();
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const clipData = reactive({
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top: 0,
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left: 0,
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width: 0,
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height: 0,
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img_width: 0,
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img_height: 0,
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});
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const canvas = document.createElement("canvas");
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const ctx = canvas.getContext("2d");
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const reload = () => {
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if (!el.value) return;
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const size = Math.min(
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1,
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el.value.offsetWidth / canvas.width,
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el.value.offsetHeight / canvas.height
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);
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const width = size * canvas.width;
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const height = size * canvas.height;
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clipData.left = 0;
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clipData.top = 0;
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clipData.width = width;
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clipData.height = height;
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clipData.img_width = width;
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clipData.img_height = height;
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};
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window.addEventListener("resize", reload);
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onDeactivated(() => {
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window.removeEventListener("resize", reload);
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});
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const setImgage = (url: string) => {
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if (!url) return;
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const img = new Image();
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img.src = url;
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data.url = url;
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img.onload = () => {
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const width = img.width;
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const height = img.height;
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canvas.width = width;
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canvas.height = height;
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ctx?.clearRect(0, 0, width, height);
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ctx?.drawImage(img, 0, 0, width, height);
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nextTick(() => reload());
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};
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};
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const canvasImageDataToBase64 = (imageData: any) => {
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// 创建一个临时的canvas元素
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const canvas = document.createElement("canvas");
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canvas.width = imageData.width;
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canvas.height = imageData.height;
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const ctx = canvas.getContext("2d");
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ctx?.putImageData(imageData, 0, 0);
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const dataURL = canvas.toDataURL("image/png");
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return dataURL;
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};
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const base64toFile = (dataurl, filename = "file") => {
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//转换base64
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let arr = dataurl.split(",");
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let mime = arr[0].match(/:(.*?);/)[1];
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let suffix = mime.split("/")[1];
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let bstr = atob(arr[1]);
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let n = bstr.length;
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let u8arr = new Uint8Array(n);
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while (n--) {
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u8arr[n] = bstr.charCodeAt(n);
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}
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return new File([u8arr], `${filename}.${suffix}`, {
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type: mime,
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});
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};
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const getImageBase64 = () => {
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const scale = canvas.width / clipData.img_width;
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const imageData = ctx?.getImageData(
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clipData.left * scale,
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clipData.top * scale,
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clipData.width * scale,
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clipData.height * scale
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);
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const base64 = canvasImageDataToBase64(imageData);
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return base64;
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};
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const getImageFile = () => {
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const base64 = getImageBase64();
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const file = base64toFile(base64, "image.png");
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return file;
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};
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// 移动裁剪框
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const clipMousedown = (e: MouseEvent | TouchEvent) => {
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e.preventDefault();
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var pageX = 0;
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var pageY = 0;
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if (e.type == "touchstart") {
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const touch = e["touches"][0];
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pageX = touch.pageX;
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pageY = touch.pageY;
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} else {
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pageX = e["pageX"];
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pageY = e["pageY"];
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}
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const elInfo = box.value.getBoundingClientRect();
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const clipInfo = clipRef.value.getBoundingClientRect();
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// 鼠标相对元素的位置
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const CX = pageX - clipInfo.x;
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const CY = pageY - clipInfo.y;
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const mousemove = (e: MouseEvent | TouchEvent) => {
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e.preventDefault();
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var pageX = 0;
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var pageY = 0;
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if (e.type == "touchmove") {
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const touch = e["touches"][0];
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pageX = touch.pageX;
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pageY = touch.pageY;
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} else {
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pageX = e["pageX"];
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pageY = e["pageY"];
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}
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let x = pageX - elInfo.x - CX;
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let y = pageY - elInfo.y - CY;
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if (x < 0) {
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x = 0;
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} else if (x > elInfo.width - clipInfo.width) {
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x = elInfo.width - clipInfo.width;
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}
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if (y < 0) {
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y = 0;
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} else if (y > elInfo.height - clipInfo.height) {
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y = elInfo.height - clipInfo.height;
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}
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clipData.top = y;
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clipData.left = x;
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clipData.img_width = elInfo.width;
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clipData.img_height = elInfo.height;
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};
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const mouseup = () => {
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window.removeEventListener("mousemove", mousemove);
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window.removeEventListener("mouseup", mouseup);
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window.removeEventListener("touchmove", mousemove);
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window.removeEventListener("touchend", mouseup);
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};
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if (e.type == "touchstart") {
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window.addEventListener("touchmove", mousemove);
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window.addEventListener("touchend", mouseup);
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} else {
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window.addEventListener("mousemove", mousemove);
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window.addEventListener("mouseup", mouseup);
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}
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};
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// 移动裁剪框的四个边框
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const mousedown = (
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e: MouseEvent | TouchEvent,
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type: "top" | "bottom" | "right" | "left"
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) => {
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const minWidth = 20;
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const minHeight = 20;
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const elInfo = box.value.getBoundingClientRect();
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const R = elInfo.width - clipData.left - clipData.width;
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const B = elInfo.height - clipData.top - clipData.height;
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const mousemove = (e: MouseEvent | TouchEvent) => {
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var x = 0;
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var y = 0;
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if (e.type == "touchmove") {
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const touch = e["touches"][0];
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x = touch.pageX - elInfo.x;
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y = touch.pageY - elInfo.y;
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} else {
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x = e["pageX"] - elInfo.x;
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y = e["pageY"] - elInfo.y;
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}
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if (type == "right") {
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let width = x - clipData.left;
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if (width + clipData.left > elInfo.width) {
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width = elInfo.width - clipData.left;
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}
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if (width < minWidth) width = minWidth;
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clipData.width = width;
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} else if (type == "bottom") {
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let height = y - clipData.top;
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if (height + clipData.top > elInfo.height) {
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height = elInfo.height - clipData.top;
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}
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if (height < minHeight) height = minHeight;
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clipData.height = height;
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} else if (type == "left") {
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let left = x;
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let width = clipData.width;
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if (left < 0) {
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left = 0;
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} else if (left > elInfo.width - R - minWidth) {
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left = elInfo.width - R - minWidth;
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}
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width = elInfo.width - R - left;
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clipData.left = left;
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clipData.width = width;
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clipData.img_width = elInfo.width;
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clipData.img_height = elInfo.height;
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} else if (type == "top") {
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let top = y;
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let height = clipData.height;
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if (top < 0) {
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top = 0;
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} else if (top > elInfo.height - B - minHeight) {
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top = elInfo.height - B - minHeight;
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}
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height = elInfo.height - B - top;
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clipData.top = top;
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clipData.height = height;
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clipData.img_height = elInfo.height;
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}
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};
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const mouseup = () => {
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window.removeEventListener("mousemove", mousemove);
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window.removeEventListener("mouseup", mouseup);
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window.removeEventListener("touchmove", mousemove);
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window.removeEventListener("touchend", mouseup);
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};
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if (e.type == "touchstart") {
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window.addEventListener("touchmove", mousemove);
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window.addEventListener("touchend", mouseup);
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} else {
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window.addEventListener("mousemove", mousemove);
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window.addEventListener("mouseup", mouseup);
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}
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};
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const topMousedown = (e: MouseEvent | TouchEvent) => {
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mousedown(e, "top");
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};
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const rightMousedown = (e: MouseEvent | TouchEvent) => {
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mousedown(e, "right");
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};
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const bottomMousedown = (e: MouseEvent | TouchEvent) => {
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mousedown(e, "bottom");
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};
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const leftMousedown = (e: MouseEvent | TouchEvent) => {
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mousedown(e, "left");
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};
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defineExpose({
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open,
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close,
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});
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</script>
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<style scoped lang="less">
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/* 弹窗遮罩层 */
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.crop-image-overlay {
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position: absolute;
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top: 0;
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left: 0;
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right: 0;
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bottom: 0;
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background-color: rgba(255, 255, 255, 0.5);
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backdrop-filter: blur(5px);
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-webkit-backdrop-filter: blur(5px);
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display: flex;
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align-items: center;
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justify-content: center;
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z-index: 1001;
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animation: fadeIn 0.3s ease;
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}
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@keyframes fadeIn {
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from {
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opacity: 0;
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}
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to {
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opacity: 1;
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}
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}
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/* 弹窗主体 */
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.crop-image-modal {
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background-color: #fff;
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border-radius: 12px;
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width: 90%;
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height: 90%;
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overflow: hidden;
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display: flex;
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flex-direction: column;
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box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0, 0, 0, 0.05);
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animation: modalSlideUp 0.3s ease;
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}
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@keyframes modalSlideUp {
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from {
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opacity: 0;
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transform: translateY(20px);
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}
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to {
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opacity: 1;
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transform: translateY(0);
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}
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}
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/* 弹窗头部 */
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.modal-header {
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padding: 16px 20px;
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background-color: rgba(255, 255, 255, 0.8);
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border-bottom: 1px solid rgba(0, 0, 0, 0.05);
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display: flex;
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justify-content: space-between;
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align-items: center;
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flex-shrink: 0;
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h3 {
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margin: 0;
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font-size: 18px;
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color: #333;
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font-weight: 600;
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}
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}
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.close-btn {
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background: none;
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border: none;
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font-size: 24px;
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cursor: pointer;
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color: #666;
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padding: 0;
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line-height: 1;
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opacity: 0.7;
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transition: all 0.2s;
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width: 24px;
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height: 24px;
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display: flex;
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align-items: center;
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justify-content: center;
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&:hover {
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opacity: 1;
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color: #333;
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transform: scale(1.1);
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}
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}
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/* 弹窗内容 */
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.modal-content {
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// padding: 20px;
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overflow: hidden;
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flex: 1;
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background-color: #fff;
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-webkit-overflow-scrolling: touch;
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display: flex;
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background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKAQMAAAC3/F3+AAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAGUExURf///9ra2sgNdccAAAARSURBVAjXY2A/wICMfjAgIwB8gwi84a8abQAAAABJRU5ErkJggg==);
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}
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.image-clip {
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user-select: none;
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flex: 1;
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display: flex;
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align-items: center;
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justify-content: center;
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> .box {
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position: relative;
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> img {
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display: block;
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width: 100%;
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height: 100%;
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}
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> .shade {
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position: absolute;
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top: 0;
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left: 0;
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right: 0;
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bottom: 0;
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background-color: rgba(0, 0, 0, 0.5);
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}
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> .clip {
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position: absolute;
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cursor: move;
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outline: 1px solid #39f;
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> * {
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position: absolute;
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}
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> .img {
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pointer-events: none;
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width: 100%;
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height: 100%;
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overflow: hidden;
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> img {
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position: absolute;
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background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKAQMAAAC3/F3+AAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAGUExURf///9ra2sgNdccAAAARSURBVAjXY2A/wICMfjAgIwB8gwi84a8abQAAAABJRU5ErkJggg==);
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}
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}
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> .top {
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cursor: n-resize;
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}
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> .bottom {
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cursor: s-resize;
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}
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> .right {
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cursor: e-resize;
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}
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> .left {
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cursor: w-resize;
|
|
}
|
|
|
|
--border: 4px;
|
|
--trbl: calc(0px - var(--border) / 2);
|
|
--ball-size: 8px;
|
|
--ball-trbl: calc(0px - var(--ball-size) / 2);
|
|
> div.top {
|
|
top: var(--trbl);
|
|
left: 0;
|
|
right: 0;
|
|
height: var(--border);
|
|
}
|
|
|
|
> div.bottom {
|
|
bottom: var(--trbl);
|
|
left: 0;
|
|
right: 0;
|
|
height: var(--border);
|
|
}
|
|
> div.left {
|
|
top: 0;
|
|
left: var(--trbl);
|
|
bottom: 0;
|
|
width: var(--border);
|
|
}
|
|
> div.right {
|
|
top: 0;
|
|
right: var(--trbl);
|
|
bottom: 0;
|
|
width: var(--border);
|
|
}
|
|
> span {
|
|
position: absolute;
|
|
width: var(--ball-size);
|
|
height: var(--ball-size);
|
|
border-radius: 50%;
|
|
background-color: #39f;
|
|
}
|
|
> span.top {
|
|
top: var(--ball-trbl);
|
|
left: 50%;
|
|
transform: translateX(-50%);
|
|
}
|
|
> span.right {
|
|
right: var(--ball-trbl);
|
|
top: 50%;
|
|
transform: translateY(-50%);
|
|
}
|
|
> span.bottom {
|
|
bottom: var(--ball-trbl);
|
|
left: 50%;
|
|
transform: translateX(-50%);
|
|
}
|
|
> span.left {
|
|
left: var(--ball-trbl);
|
|
top: 50%;
|
|
transform: translateY(-50%);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 空状态 */
|
|
.empty-state {
|
|
display: flex;
|
|
flex-direction: column;
|
|
align-items: center;
|
|
justify-content: center;
|
|
padding: 60px 20px;
|
|
color: #666;
|
|
min-height: 300px;
|
|
|
|
.empty-icon {
|
|
font-size: 48px;
|
|
margin-bottom: 16px;
|
|
opacity: 0.5;
|
|
}
|
|
|
|
p {
|
|
font-size: 16px;
|
|
margin: 0;
|
|
}
|
|
}
|
|
|
|
/* 弹窗底部 */
|
|
.modal-footer {
|
|
padding: 16px 20px;
|
|
background-color: rgba(255, 255, 255, 0.8);
|
|
border-top: 1px solid rgba(0, 0, 0, 0.05);
|
|
display: flex;
|
|
justify-content: space-between;
|
|
align-items: center;
|
|
flex-shrink: 0;
|
|
> .image-submit {
|
|
font-size: 1.2rem;
|
|
line-height: 4rem;
|
|
}
|
|
}
|
|
|
|
.image-count {
|
|
font-size: 14px;
|
|
color: #666;
|
|
font-weight: 500;
|
|
}
|
|
|
|
/* 响应式设计 */
|
|
@media screen and (max-width: 1024px) {
|
|
.crop-image-modal {
|
|
width: 95%;
|
|
max-width: 900px;
|
|
}
|
|
|
|
.modal-content {
|
|
padding: 16px;
|
|
}
|
|
|
|
.modal-header,
|
|
.modal-footer {
|
|
padding: 14px 16px;
|
|
}
|
|
}
|
|
|
|
@media screen and (max-width: 640px) {
|
|
.crop-image-modal {
|
|
width: 98%;
|
|
margin: 10px;
|
|
max-height: 90vh;
|
|
}
|
|
|
|
.modal-content {
|
|
padding: 12px;
|
|
gap: 16px;
|
|
}
|
|
|
|
.modal-header h3 {
|
|
font-size: 16px;
|
|
}
|
|
|
|
.image-categories {
|
|
gap: 8px;
|
|
padding-bottom: 8px;
|
|
}
|
|
|
|
.category-btn {
|
|
padding: 6px 12px;
|
|
font-size: 13px;
|
|
height: 32px;
|
|
}
|
|
}
|
|
</style>
|