更新

TUICallKit-Vue3/tongji/utils/svgDataUrl.js

@@ -0,0 +1,49 @@
+/**
+ * 将 SVG 字符串转为小程序可用的 data URL（base64 在真机上更稳定）
+ */
+
+function utf8ToBytes(str) {
+    const encoded = encodeURIComponent(str)
+    const bytes = []
+    for (let i = 0; i < encoded.length; i++) {
+        if (encoded.charCodeAt(i) === 37) {
+            bytes.push(parseInt(encoded.substring(i + 1, i + 3), 16))
+            i += 2
+        } else {
+            bytes.push(encoded.charCodeAt(i))
+        }
+    }
+    return new Uint8Array(bytes)
+}
+
+function bytesToBase64(bytes) {
+    if (typeof uni !== 'undefined' && typeof uni.arrayBufferToBase64 === 'function') {
+        return uni.arrayBufferToBase64(bytes.buffer)
+    }
+    if (typeof btoa !== 'undefined') {
+        let binary = ''
+        for (let i = 0; i < bytes.length; i++) {
+            binary += String.fromCharCode(bytes[i])
+        }
+        return btoa(binary)
+    }
+    const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+    let result = ''
+    for (let i = 0; i < bytes.length; i += 3) {
+        const a = bytes[i]
+        const b = i + 1 < bytes.length ? bytes[i + 1] : 0
+        const c = i + 2 < bytes.length ? bytes[i + 2] : 0
+        result += chars[a >> 2]
+        result += chars[((a & 3) << 4) | (b >> 4)]
+        result += i + 1 < bytes.length ? chars[((b & 15) << 2) | (c >> 6)] : '='
+        result += i + 2 < bytes.length ? chars[c & 63] : '='
+    }
+    return result
+}
+
+export function svgToDataUrl(svg) {
+    const normalized = String(svg || '').trim()
+    if (!normalized) return ''
+    const base64 = bytesToBase64(utf8ToBytes(normalized))
+    return `data:image/svg+xml;base64,${base64}`
+}