Initial commit: Flutter 无书应用项目

lib/utils/screen_adapter.dart

@@ -0,0 +1,207 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+class ScreenAdapter {
+  static void setPreferredOrientations() {
+    SystemChrome.setPreferredOrientations([
+      DeviceOrientation.portraitUp,
+      DeviceOrientation.portraitDown,
+      DeviceOrientation.landscapeLeft,
+      DeviceOrientation.landscapeRight,
+    ]);
+  }
+
+  static void enableSystemUIOverlay() {
+    SystemChrome.setEnabledSystemUIMode(
+      SystemUiMode.manual,
+      overlays: [
+        SystemUiOverlay.top,
+        SystemUiOverlay.bottom,
+      ],
+    );
+  }
+
+  static void enableImmersiveMode() {
+    SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky);
+  }
+
+  static void setSystemUIOverlayStyle({
+    Color? statusBarColor,
+    Brightness? statusBarIconBrightness,
+  }) {
+    SystemChrome.setSystemUIOverlayStyle(
+      SystemUiOverlayStyle(
+        statusBarColor: statusBarColor ?? Colors.transparent,
+        statusBarIconBrightness: statusBarIconBrightness ?? Brightness.dark,
+      ),
+    );
+  }
+
+  static bool isSplitScreen(BuildContext context) {
+    final screenWidth = MediaQuery.of(context).size.width;
+    final screenHeight = MediaQuery.of(context).size.height;
+    final aspectRatio = screenWidth / screenHeight;
+    
+    // 分屏模式通常具有特殊的宽高比
+    return aspectRatio > 2.0 || aspectRatio < 0.5;
+  }
+
+  static bool isPopupWindow(BuildContext context) {
+    final screenWidth = MediaQuery.of(context).size.width;
+    final screenHeight = MediaQuery.of(context).size.height;
+    
+    // 小窗模式通常屏幕尺寸较小
+    return screenWidth < 600 || screenHeight < 800;
+  }
+
+  static bool isTabletMode(BuildContext context) {
+    final shortestSide = MediaQuery.of(context).size.shortestSide;
+    return shortestSide >= 600;
+  }
+
+  static void adaptForSplitScreen(BuildContext context) {
+    if (isSplitScreen(context)) {
+      // 分屏模式下的适配
+      SystemChrome.setEnabledSystemUIMode(
+        SystemUiMode.manual,
+        overlays: [SystemUiOverlay.top],
+      );
+    }
+  }
+
+  static void adaptForPopupWindow(BuildContext context) {
+    if (isPopupWindow(context)) {
+      // 小窗模式下的适配
+      SystemChrome.setEnabledSystemUIMode(
+        SystemUiMode.manual,
+        overlays: [SystemUiOverlay.top],
+      );
+    }
+  }
+
+  static void handleOrientationChange(BuildContext context) {
+    final orientation = MediaQuery.of(context).orientation;
+    
+    if (orientation == Orientation.landscape) {
+      // 横屏模式适配
+      SystemChrome.setEnabledSystemUIMode(
+        SystemUiMode.manual,
+        overlays: [SystemUiOverlay.top],
+      );
+    } else {
+      // 竖屏模式适配
+      SystemChrome.setEnabledSystemUIMode(
+        SystemUiMode.manual,
+        overlays: [
+          SystemUiOverlay.top,
+          SystemUiOverlay.bottom,
+        ],
+      );
+    }
+  }
+
+  static Size getAdaptiveSize(BuildContext context) {
+    final mediaQuery = MediaQuery.of(context);
+    final size = mediaQuery.size;
+    final orientation = mediaQuery.orientation;
+    
+    if (isSplitScreen(context)) {
+      // 分屏模式下的尺寸调整
+      return Size(
+        size.width * 0.9,
+        size.height * 0.85,
+      );
+    }
+    
+    if (isPopupWindow(context)) {
+      // 小窗模式下的尺寸调整
+      return Size(
+        size.width * 0.95,
+        size.height * 0.9,
+      );
+    }
+    
+    if (orientation == Orientation.landscape) {
+      // 横屏模式下的尺寸调整
+      return Size(
+        size.width * 0.95,
+        size.height * 0.9,
+      );
+    }
+    
+    return size;
+  }
+
+  static EdgeInsets getAdaptivePadding(BuildContext context) {
+    final size = MediaQuery.of(context).size;
+    
+    if (isSplitScreen(context)) {
+      return EdgeInsets.symmetric(
+        horizontal: size.width * 0.02,
+        vertical: size.height * 0.02,
+      );
+    }
+    
+    if (isPopupWindow(context)) {
+      return EdgeInsets.symmetric(
+        horizontal: size.width * 0.03,
+        vertical: size.height * 0.03,
+      );
+    }
+    
+    return const EdgeInsets.all(16.0);
+  }
+
+  static double getAdaptiveFontSize(BuildContext context, double baseFontSize) {
+    final screenWidth = MediaQuery.of(context).size.width;
+    
+    if (isSplitScreen(context)) {
+      return baseFontSize * 0.9;
+    }
+    
+    if (isPopupWindow(context)) {
+      return baseFontSize * 0.85;
+    }
+    
+    if (screenWidth < 600) {
+      return baseFontSize * 0.9;
+    } else if (screenWidth > 1200) {
+      return baseFontSize * 1.1;
+    }
+    
+    return baseFontSize;
+  }
+
+  static int getAdaptiveGridColumns(BuildContext context) {
+    final screenWidth = MediaQuery.of(context).size.width;
+    
+    if (isSplitScreen(context)) {
+      return 2;
+    }
+    
+    if (isPopupWindow(context)) {
+      return 1;
+    }
+    
+    if (screenWidth >= 1440) {
+      return 6;
+    } else if (screenWidth >= 1024) {
+      return 4;
+    } else if (screenWidth >= 768) {
+      return 3;
+    } else {
+      return 2;
+    }
+  }
+
+  static void setupAdaptiveConfig(BuildContext context) {
+    // 设置自适应配置
+    setPreferredOrientations();
+    enableSystemUIOverlay();
+    
+    // 根据屏幕状态进行适配
+    adaptForSplitScreen(context);
+    adaptForPopupWindow(context);
+    handleOrientationChange(context);
+  }
+}