first commit

target/classes/static/components/plugins/sysSignature/h5Index.vue

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+<template>
+    <div class="h5-signature">
+        <div v-if="!showSignaturePanel" class="main-panel">
+            <slot v-if="$slots.default"></slot>
+            <template v-else>
+                <van-button @click="openSignature" class="open-button" size="middle" plain native-type="button">打开签字板</van-button>
+                <van-image :src="signatureContent"></van-image>
+            </template>
+        </div>
+        <van-popup v-model="showSignaturePanel" :style="{ height: '100vh', width: '100vw' }">
+            <signature @save="save"></signature>
+        </van-popup>
+    </div>
+</template>
+
+<script>
+module.exports = {
+    name: "h5",
+    components: {
+        signature: httpVueLoader("/components/plugins/sysSignature/index.vue?v=" + new Date().getTime())
+    },
+    props: {
+        value: {
+            type: String,
+            default: ""
+        }
+    },
+    watch: {
+        value: {
+            handler(val) {
+                this.signatureContent = val
+            },
+            immediate: true
+        }
+    },
+    data() {
+        return {
+            signatureContent: null,
+            showSignaturePanel: false
+        }
+    },
+    methods: {
+        openSignature() {
+            this.showSignaturePanel = true
+        },
+
+        save(signature) {
+            const file = this.base64ToFile(signature, "signature.png")
+            const formData = new FormData()
+            formData.append("file", file)
+            axios
+                .post("/platform/signature/saveH5Signature", formData, {
+                    headers: {
+                        "Content-Type": "multipart/form-data"
+                    }
+                })
+                .then((res) => {
+                    return res.data
+                })
+                .then((res) => {
+                    if (res.code === 0) {
+                        alert("保存成功")
+                        this.showSignaturePanel = false
+                        this.$emit("input", res.data)
+                    } else {
+                        alert("保存失败")
+                    }
+                })
+        },
+        base64ToFile(base64Data, filename) {
+            // 将base64的数据部分提取出来
+            const parts = base64Data.split(";base64,")
+            const contentType = parts[0].split(":")[1]
+            const raw = window.atob(parts[1])
+            const rawLength = raw.length
+            const uInt8Array = new Uint8Array(rawLength)
+
+            for (let i = 0; i < rawLength; ++i) {
+                uInt8Array[i] = raw.charCodeAt(i)
+            }
+
+            // 使用Blob对象创建File对象
+            const blob = new Blob([uInt8Array], { type: contentType })
+            blob.lastModifiedDate = new Date()
+            blob.name = filename
+            return new File([blob], filename, { type: contentType })
+        }
+    },
+    created() {}
+}
+</script>
+
+<style scoped>
+.h5-signature {
+    width: 100%;
+}
+
+.main-panel {
+    position: relative;
+    flex-direction: column-reverse;
+    display: flex;
+    row-gap: 10px;
+}
+
+.main-panel .van-image {
+    min-height: 150px;
+}
+
+.main-panel .open-button {
+    color: var(--color-primary);
+}
+</style>

target/classes/static/components/plugins/sysSignature/index.vue

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+<template>
+    <div class="signature-wrap">
+        <canvas id="canvas"></canvas>
+        <div :class="isLikelyMobile() ? 'action-buttons' : 'action-buttons pc-action-buttons'">
+            <button @click="clear" class="action-button-danger" type="button">清空</button>
+            <button @click="undo" class="action-button-warning" type="button">撤销</button>
+            <button @click="save" class="action-button-primary" type="button">确定</button>
+        </div>
+    </div>
+</template>
+
+<script>
+// function a() {
+//     // 检查当前屏幕方向
+//     if (window.orientation === 0 || window.orientation === 180) {
+//         // 竖屏状态
+//         console.log("竖屏状态")
+//         alert("当前不支持竖屏，请将设备调整为横屏！")
+//     } else {
+//         // 横屏状态，执行禁止旋转的操作
+//         alert("当前不支持横屏，请将设备调整为竖屏！")
+//         // 可以在这里使内容固定在竖屏方向
+//         const innerWidth = window.innerWidth
+//         const innerHeight = window.innerHeight
+//         alert(innerHeight)
+//         alert(innerWidth)
+//     }
+// }
+//
+// window.addEventListener("orientationchange", a)
+// a()
+
+let signature = null
+module.exports = {
+    name: "sysSignature",
+    data() {
+        return {
+            content: null
+        }
+    },
+    methods: {
+        clear() {
+            signature.clear()
+        },
+        undo() {
+            signature.undo()
+        },
+        rotate() {
+            signature.getRotateCanvas(90)
+        },
+        isLikelyMobile() {
+          const isTouchDevice = 'ontouchstart' in window || navigator.maxTouchPoints > 0;
+          const isSmallScreen = window.screen.width <= 768;
+          const hasMobileUA = /Android|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
+
+          return hasMobileUA || (isTouchDevice && isSmallScreen);
+        },
+        save() {
+            if (signature.isEmpty()) {
+                alert("请签字后再保存")
+                return
+            }
+            // const png = signature.getPNG()
+            //旋转一下 横过来
+            const rotateCanvas = signature.getRotateCanvas(-90)
+            if (this.isLikelyMobile()) {
+              this.$emit("save", rotateCanvas.toDataURL())
+            } else {
+              this.$emit("save", signature.toDataURL())
+            }
+        }
+    },
+    mounted() {
+        const innerWidth = window.innerWidth
+        const innerHeight = window.innerHeight
+
+        const canvas = document.getElementById("canvas")
+        canvas.width = window.innerWidth
+        canvas.height = window.innerHeight
+        signature = new SmoothSignature(canvas, {
+            width: innerWidth - 30,
+            height: innerHeight - 30,
+            scale: 2,
+            minWidth: 4,
+            maxWidth: 10,
+            color: "#000000"
+            // bgColor: "#f6f6f6"
+        })
+    }
+}
+</script>
+
+<style scoped>
+.signature-wrap {
+    position: fixed;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    padding: 15px;
+    background: #ffffff;
+}
+
+.signature-wrap .action {
+    width: 50px;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+}
+
+.signature-wrap .action-buttons {
+    white-space: nowrap;
+    transform: rotate(90deg);
+    display: flex;
+    column-gap: 10px;
+    position: fixed;
+    bottom: 0px;
+    left: 60px;
+    transform: rotate(90deg);
+    display: flex;
+    flex-direction: column;
+    row-gap: 20px;
+}
+
+.signature-wrap .pc-action-buttons {
+  bottom: 50px;
+  right: 50px;
+  left: unset;
+  transform: rotate(0deg);
+}
+
+.action-buttons button {
+    color: #ffffff;
+    position: relative;
+    display: inline-block;
+    box-sizing: border-box;
+    height: auto;
+    padding: 3px 12px;
+    margin: 0;
+    font-size: 15px;
+    line-height: 1.4;
+    text-align: center;
+    border-radius: 4px;
+    cursor: pointer;
+    transition: opacity 0.15s ease;
+    -webkit-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+}
+
+.action-button-primary {
+    background-color: #1677ff;
+    border: 1px solid #1677ff;
+}
+
+.action-button-danger {
+    background-color: #ff3141;
+    border: 1px solid #ff3141;
+}
+
+.action-button-warning {
+    background-color: #ff8f1f;
+    border: 1px solid #ff8f1f;
+}
+
+.signature-wrap canvas {
+    flex: 1;
+    border-radius: 10px;
+    border: 2px dashed #ccc;
+}
+</style>

target/classes/static/components/plugins/sysSignature/pc.vue

@@ -0,0 +1,109 @@
+<template>
+  <el-card shadow="never" class="pc-signature-card">
+    <div class="pc-signature">
+      <el-link type="primary">扫描下方二维码进行签字</el-link>
+      <div class="signature-body" v-loading="loading">
+        <QrCode v-if="!signatureContent" :options="{ width: 126 }" :value="signatureAddress"
+                class="signature-qrcode"></QrCode>
+        <el-image v-if="signatureContent" :src="signatureContent" class="signature-image"></el-image>
+      </div>
+      <el-link type="danger" icon="el-icon-edit" @click="signatureAgain" v-if="signatureContent">重签</el-link>
+    </div>
+  </el-card>
+</template>
+
+<script>
+module.exports = {
+  name: "sysSignaturePc",
+  store,
+  props: {
+    value: {
+      type: String,
+      default: ""
+    }
+  },
+  watch: {
+    value: {
+      handler(val) {
+        if (val) {
+          this.signatureContent = val
+          this.$emit("input", this.signatureContent)
+        }
+      },
+      immediate: true
+    }
+  },
+  data() {
+    return {
+      //前端唯一标识 当然后端还有用户id作为唯一标识
+      id: new Date().getTime() + Math.floor(Math.random() * 10000) + 1,
+      signatureAddress: null,
+      interval: null,
+      signatureContent: null,
+      loading: true,
+    }
+  },
+  methods: {
+    async init() {
+      const {code, data} = await this.$axios.post("/platform/signature/get")
+      if (code === 0) {
+        this.signatureContent = data && data.signature
+        this.$emit("input", this.signatureContent)
+      }
+      this.signatureAddress = origin + "/platform/signature/scanPcCode?id=" + this.id
+    },
+    signatureAgain() {
+      const val = sessionStorage.getItem("h5-scan-code-signature-" + this.id)
+      this.signatureContent = val
+      this.$emit("input", val)
+    }
+  },
+  async mounted() {
+    await this.init()
+    webSocketPubSub.subscribe("h5-scan-code-signature", (data) => {
+      console.info("ws:收到签字成功消息:", data)
+      this.signatureContent = data.value
+      this.$emit("input", data.value)
+    })
+
+    // 可选：轮询或 watch ready 状态
+    const checkReady = () => {
+      if (webSocketPubSub.ws && webSocketPubSub.ws.readyState === WebSocket.OPEN) {
+        console.info("ws.readyState is open");
+        this.loading = false;
+        console.log(this.signatureAddress)
+      } else {
+        setTimeout(checkReady, 100);
+      }
+    };
+    checkReady();
+  }
+}
+</script>
+
+<style scoped>
+.pc-signature-card {
+  border: 1px solid var(--border-color-base);
+}
+
+.pc-signature {
+  display: flex;
+  justify-content: center;
+  flex-direction: column;
+  align-items: center;
+  row-gap: 20px;
+}
+
+.signature-body {
+  position: relative;
+}
+
+.signature-qrcode {
+  transition: opacity 0.5s ease;
+}
+
+.signature-image {
+  height: 100px;
+  width: auto;
+}
+</style>