From c71ce7fa262574818a74f0732faed48459f4e53a Mon Sep 17 00:00:00 2001
From: ranhao <2352406715@qq.com>
Date: Mon, 19 Jan 2026 19:47:59 +0800
Subject: [PATCH] =?UTF-8?q?=E8=A1=A5=E4=B8=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 src/notes/tool/ElderModeUtils.java | 109 +++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 src/notes/tool/ElderModeUtils.java

diff --git a/src/notes/tool/ElderModeUtils.java b/src/notes/tool/ElderModeUtils.java
new file mode 100644
index 0000000..11f4132
--- /dev/null
+++ b/src/notes/tool/ElderModeUtils.java
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2026, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.micode.notes.tool;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import net.micode.notes.R;
+import net.micode.notes.ui.NotesPreferenceActivity;
+
+/**
+ * 老年人模式工具类，用于管理老年人模式的设置和应用
+ */
+public class ElderModeUtils {
+    /**
+     * 老年人模式的字体缩放比例
+     */
+    private static final float ELDER_MODE_FONT_SCALE = 1.1f;
+
+    /**
+     * 检查是否启用了老年人模式
+     * 
+     * @param context 上下文
+     * @return 是否启用了老年人模式
+     */
+    public static boolean isElderModeEnabled(Context context) {
+        // 使用默认的SharedPreferences，因为CheckBoxPreference会自动保存到这里
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        return preferences.getBoolean(NotesPreferenceActivity.PREFERENCE_ELDER_MODE_KEY, false);
+    }
+
+    /**
+     * 应用老年人模式到指定的View
+     * 
+     * @param context 上下文
+     * @param view 要应用老年人模式的View
+     */
+    public static void applyElderMode(Context context, View view) {
+        if (!isElderModeEnabled(context)) {
+            return;
+        }
+
+        // 只对用户输入的内容应用字体增大，系统信息保持不变
+        if (view instanceof TextView) {
+            TextView textView = (TextView) view;
+            int id = textView.getId();
+            
+            // 只增大用户输入内容的字体
+            if (id == R.id.tv_title || // 笔记列表中的标题（用户输入内容）
+                id == R.id.note_edit_view) { // 编辑界面中的内容（用户输入）
+                textView.setTextSize(textView.getTextSize() * ELDER_MODE_FONT_SCALE);
+            }
+        } else if (view instanceof ViewGroup) {
+            // 递归处理ViewGroup中的所有子View
+            ViewGroup viewGroup = (ViewGroup) view;
+            for (int i = 0; i < viewGroup.getChildCount(); i++) {
+                applyElderMode(context, viewGroup.getChildAt(i));
+            }
+        }
+    }
+
+    /**
+     * 清除老年人模式的应用
+     * 
+     * @param context 上下文
+     * @param view 要清除老年人模式的View
+     */
+    public static void clearElderMode(Context context, View view) {
+        if (!isElderModeEnabled(context)) {
+            return;
+        }
+
+        // 只对用户输入的内容应用字体恢复，系统信息保持不变
+        if (view instanceof TextView) {
+            TextView textView = (TextView) view;
+            int id = textView.getId();
+            
+            // 只恢复用户输入内容的字体
+            if (id == R.id.tv_title || // 笔记列表中的标题（用户输入内容）
+                id == R.id.note_edit_view) { // 编辑界面中的内容（用户输入）
+                textView.setTextSize(textView.getTextSize() / ELDER_MODE_FONT_SCALE);
+            }
+        } else if (view instanceof ViewGroup) {
+            // 递归处理ViewGroup中的所有子View
+            ViewGroup viewGroup = (ViewGroup) view;
+            for (int i = 0; i < viewGroup.getChildCount(); i++) {
+                clearElderMode(context, viewGroup.getChildAt(i));
+            }
+        }
+    }
+}
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