From c718a4450376452c9fe6219744ad4eddd7b7b041 Mon Sep 17 00:00:00 2001
From: Zhukj <3262118957>
Date: Mon, 20 Apr 2026 17:33:04 +0800
Subject: [PATCH] =?UTF-8?q?fix=EF=BC=9A=E4=BC=98=E5=8C=96=E5=AF=BC?=
 =?UTF-8?q?=E5=87=BA=E5=9B=BE=E7=89=87=E6=B8=85=E6=99=B0=E5=BA=A6?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 js/script.js | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/js/script.js b/js/script.js
index 9b49dbf..f3c8ce0 100644
--- a/js/script.js
+++ b/js/script.js
@@ -1781,7 +1781,12 @@
     // 显示预览
     async function showPreview() {
         const canvas = await generateCanvas();
-        const dataUrl = canvas.toDataURL('image/png');
+        console.log('预览画布尺寸:', canvas.width, 'x', canvas.height);
+        
+        // 使用 toBlob 获取更高质量的图片
+        const blob = await new Promise(resolve => canvas.toBlob(resolve, 'image/png', 1.0));
+        console.log('预览图片大小:', (blob.size / 1024).toFixed(2), 'KB');
+        const dataUrl = URL.createObjectURL(blob);
 
         const tipOverlay = document.createElement('div');
         tipOverlay.id = 'previewTip';
@@ -1969,6 +1974,7 @@
         // 设置画布为固定高清分辨率
         canvas.width = TARGET_WIDTH;
         canvas.height = TARGET_HEIGHT;
+        console.log('设置画布尺寸:', canvas.width, 'x', canvas.height);
 
         // 启用最高质量渲染
         ctx.imageSmoothingEnabled = true;
@@ -2224,7 +2230,7 @@
 
         try {
             const canvas = await generateCanvas();
-            showMobileSaveTip();
+            await showMobileSaveTip();
         } catch (err) {
             console.error('保存失败:', err);
             alert('保存失败，请重试');
@@ -2232,9 +2238,14 @@
     }
 
     // 显示移动端保存选项
-    function showMobileSaveTip() {
+    async function showMobileSaveTip() {
         const canvas = exportCanvas;
-        const dataUrl = canvas.toDataURL('image/png');
+        console.log('导出画布尺寸:', canvas.width, 'x', canvas.height);
+        
+        // 使用 toBlob 获取更高质量的图片
+        const blob = await new Promise(resolve => canvas.toBlob(resolve, 'image/png', 1.0));
+        console.log('导出图片大小:', (blob.size / 1024).toFixed(2), 'KB');
+        const dataUrl = URL.createObjectURL(blob);
         const filename = '邀请函_' + Date.now() + '.png';
 
         const tipOverlay = document.createElement('div');