feat:优化图片生产质量，减少打印耗时

2026-03-24 10:05:57 +08:00
parent cbf07faf27
commit a34311d35e
5 changed files with 1675 additions and 3 deletions
@@ -1,8 +1,16 @@
+import { A4_EXPORT_SIZE_150DPI } from '../constants/colors';
+
+/**
+ * 导出为固定打印分辨率（A4 150 DPI），避免高 DPR 设备导出过大图导致打印慢、文件大
+ */
 const doSaveImage = (canvas: Canvas) => {
+    const { width: destWidth, height: destHeight } = A4_EXPORT_SIZE_150DPI;
    wx.canvasToTempFilePath({
-        canvas: canvas,
-        fileType: 'png',
-        quality: 1,
+        canvas,
+        fileType: 'jpg',
+        quality: 0.9,
+        destWidth,
+        destHeight,
        success: (res) => {
            wx.saveImageToPhotosAlbum({
                filePath: res.tempFilePath,