增加解除占用功能

ui/settings_window.py

@@ -3,7 +3,7 @@ import os
 from PyQt6.QtWidgets import (
     QDialog, QHBoxLayout, QVBoxLayout, QListWidget, QListWidgetItem,
     QStackedWidget, QWidget, QLabel, QSlider, QPushButton,
-    QCheckBox, QGroupBox, QFormLayout, QSpinBox, QFrame
+    QCheckBox, QGroupBox, QFormLayout, QSpinBox, QFrame, QLineEdit, QFileDialog
 )
 from PyQt6.QtCore import Qt, QSize
 from PyQt6.QtWidgets import QMessageBox
@@ -12,6 +12,7 @@ import qtawesome as qta
 from db import database
 import ui.theme as theme
 import ui.dialog_style as dialog_style
+from app_info import APP_NAME, __VERSION__
 
 
 class SettingsWindow(QDialog):
@@ -51,6 +52,7 @@ class SettingsWindow(QDialog):
             ("fa5s.paint-brush",  "外观"),
             ("fa5s.window-maximize", "窗口"),
             ("fa5s.rocket",       "启动"),
+            ("fa5s.folder-open",  "缓存"),
             ("fa5s.heart",        "捐赠"),
             ("fa5s.eraser",       "初始化"),
         ]
@@ -75,6 +77,7 @@ class SettingsWindow(QDialog):
         self.stack.addWidget(self._page_appearance())
         self.stack.addWidget(self._page_window())
         self.stack.addWidget(self._page_startup())
+        self.stack.addWidget(self._page_cache())
         self.stack.addWidget(self._page_donate())
         self.stack.addWidget(self._page_initialization())
         # 此时 stack 已就绪，允许导航回调正常工作
@@ -241,13 +244,65 @@ class SettingsWindow(QDialog):
         layout.addWidget(self._divider())
         layout.addWidget(self._section_title("关于"))
 
-        about = QLabel("桌面文件整理  v1.0\n整理你的桌面快捷方式，保持桌面干净。")
+        about = QLabel(f"{APP_NAME}  v{__VERSION__}\n整理你的桌面快捷方式，保持桌面干净。")
         about.setStyleSheet("color:#888; font-size:12px; line-height:1.6;")
         layout.addWidget(about)
 
         layout.addStretch()
         return page
 
+    # ── 缓存页 ───────────────────────────────────────────
+    def _page_cache(self) -> QWidget:
+        page = QWidget()
+        layout = QVBoxLayout(page)
+        layout.setContentsMargins(24, 20, 24, 20)
+        layout.setSpacing(16)
+
+        layout.addWidget(self._section_title("缓存目录"))
+
+        desc = QLabel("下载的免安装软件/安装包默认保存到该目录。")
+        desc.setWordWrap(True)
+        desc.setStyleSheet("color:#888; font-size:12px; line-height:1.6;")
+        layout.addWidget(desc)
+
+        row = QHBoxLayout()
+        row.setSpacing(10)
+
+        self._cache_path_edit = QLineEdit()
+        self._cache_path_edit.setPlaceholderText("请选择缓存目录…")
+        self._cache_path_edit.setText(database.get_setting("cache_dir", ""))
+
+        browse = QPushButton("浏览…")
+        browse.clicked.connect(self._choose_cache_dir)
+
+        save = QPushButton("保存")
+        save.clicked.connect(self._save_cache_dir)
+
+        row.addWidget(self._cache_path_edit)
+        row.addWidget(browse)
+        row.addWidget(save)
+        layout.addLayout(row)
+
+        layout.addStretch()
+        return page
+
+    def _choose_cache_dir(self):
+        cur = ""
+        if hasattr(self, "_cache_path_edit"):
+            cur = self._cache_path_edit.text().strip()
+        start = cur if cur else os.path.expanduser("~")
+        p = QFileDialog.getExistingDirectory(self, "选择缓存目录", start)
+        if p:
+            self._cache_path_edit.setText(p)
+
+    def _save_cache_dir(self):
+        p = self._cache_path_edit.text().strip() if hasattr(self, "_cache_path_edit") else ""
+        if p and not os.path.isdir(p):
+            dialog_style.warning(self, "无效目录", "选择的缓存目录不存在，请重新选择。")
+            return
+        database.set_setting("cache_dir", p)
+        dialog_style.information(self, "已保存", "缓存目录已保存。")
+
     # ── 捐赠页 ───────────────────────────────────────────
     def _page_donate(self) -> QWidget:
         page = QWidget()