feat: add DMG background with Gatekeeper installation guide

tauri-app/src-tauri/dmg-background.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+"""生成 DMG 背景图，包含安装指引"""
+
+import subprocess
+from PIL import Image, ImageDraw, ImageFont
+
+# 动态获取中文字体路径
+result = subprocess.run(
+    ["fc-match", "-f", "%{file}", "PingFang SC"],
+    capture_output=True, text=True
+)
+font_path = result.stdout.strip() if result.returncode == 0 else None
+
+# DMG 窗口尺寸
+W, H = 1320, 800
+
+# 颜色
+BG_COLOR = (245, 245, 247)
+TEXT_COLOR = (29, 29, 31)
+ACCENT_COLOR = (0, 122, 255)
+ARROW_COLOR = (150, 150, 155)
+
+img = Image.new("RGB", (W, H), BG_COLOR)
+draw = ImageDraw.Draw(img)
+
+# 加载字体
+if font_path:
+    font_title = ImageFont.truetype(font_path, 48, index=0)
+    font_body = ImageFont.truetype(font_path, 32, index=2)
+    font_small = ImageFont.truetype(font_path, 24, index=2)
+else:
+    font_title = ImageFont.load_default()
+    font_body = font_title
+    font_small = font_title
+
+# 标题
+draw.text((W//2, 60), "美家卡智影", fill=TEXT_COLOR, font=font_title, anchor="mm")
+
+# 拖拽指引
+draw.text((W//2, 720), "将左侧图标拖拽到右侧 Applications 文件夹", fill=TEXT_COLOR, font=font_body, anchor="mm")
+
+# 安装说明框
+box_x, box_y = 260, 500
+box_w, box_h = 800, 160
+draw.rounded_rectangle([box_x, box_y, box_x + box_w, box_y + box_h], radius=20, fill=(255, 255, 255), outline=ARROW_COLOR, width=2)
+
+# 说明文字
+draw.text((W//2, box_y + 40), "⚠️ 首次安装提示", fill=ACCENT_COLOR, font=font_body, anchor="mm")
+draw.text((W//2, box_y + 95), '由于未注册 Apple 开发者，首次打开时请右键点击应用，选择"打开"', fill=TEXT_COLOR, font=font_small, anchor="mm")
+
+# 保存
+img_1x = img.resize((660, 400), Image.LANCZOS)
+img_1x.save("tauri-app/src-tauri/dmg-background.png", "PNG")
+print("Generated tauri-app/src-tauri/dmg-background.png")

tauri-app/src-tauri/tauri.conf.json

@@ -70,7 +70,22 @@
     ],
     "macOS": {
       "minimumSystemVersion": "13.0",
-      "infoPlist": "Info.plist"
+      "infoPlist": "Info.plist",
+      "dmg": {
+        "background": "dmg-background.png",
+        "windowSize": {
+          "width": 660,
+          "height": 400
+        },
+        "appPosition": {
+          "x": 180,
+          "y": 170
+        },
+        "applicationFolderPosition": {
+          "x": 480,
+          "y": 170
+        }
+      }
     },
     "windows": {
       "nsis": {