设置缩放

main.py

@@ -46,7 +46,7 @@ from PyQt5.QtWidgets import (
     QApplication, QMainWindow, QWidget, QVBoxLayout, QHBoxLayout,
     QLabel, QPushButton, QLineEdit, QCheckBox, QTabWidget,
     QComboBox, QFileDialog, QTextEdit, QFrame, QMessageBox,
-    QSizePolicy, QGroupBox,
+    QSizePolicy, QGroupBox, QDialog, QAction,
 )
 from PyQt5.QtCore import Qt, QThread, pyqtSignal, QTimer
 from PyQt5.QtGui import QImage, QPixmap, QFont
@@ -58,6 +58,128 @@ PARAMS_FILE = "camera_params.json"
 MIN_DEPTH_MM, MAX_DEPTH_MM = 200, 5000
 _DISCONNECT_TIMEOUTS = 6     # 6 × 500 ms = 3 s 无帧 → 断线
 
+_UI_SCALE: float = 1.0   # initialized in main() before window creation
+
+
+def _fs(n: float) -> int:
+    """Scale a font-size (px or pt) value."""
+    return max(8, int(n * _UI_SCALE))
+
+
+def _sz(n: float) -> int:
+    """Scale a UI dimension (px)."""
+    return max(1, int(n * _UI_SCALE))
+
+
+# ─────────────────────────────────────────────────────────────────
+#  App Settings
+# ─────────────────────────────────────────────────────────────────
+
+class AppSettings:
+    _CONFIG_PATH = Path(__file__).parent / "app_settings.json"
+    FONT_SCALE_AUTO = "auto"
+
+    def __init__(self):
+        self.font_scale: str = self.FONT_SCALE_AUTO
+        self._load()
+
+    def _load(self):
+        if self._CONFIG_PATH.is_file():
+            try:
+                data = json.loads(self._CONFIG_PATH.read_text(encoding="utf-8"))
+                self.font_scale = data.get("font_scale", self.FONT_SCALE_AUTO)
+            except Exception:
+                pass
+
+    def save(self):
+        self._CONFIG_PATH.write_text(
+            json.dumps({"font_scale": self.font_scale}, ensure_ascii=False, indent=2),
+            encoding="utf-8",
+        )
+
+    @staticmethod
+    def compute_auto_scale() -> float:
+        screen = QApplication.primaryScreen()
+        if screen:
+            dpr = screen.devicePixelRatio()
+            return round(max(0.8, min(2.0, dpr)), 2)
+        return 1.0
+
+    def get_scale_factor(self) -> float:
+        if self.font_scale == self.FONT_SCALE_AUTO:
+            return self.compute_auto_scale()
+        try:
+            return float(self.font_scale)
+        except ValueError:
+            return 1.0
+
+
+# ─────────────────────────────────────────────────────────────────
+#  Settings Dialog
+# ─────────────────────────────────────────────────────────────────
+
+class SettingsDialog(QDialog):
+    def __init__(self, settings: "AppSettings", parent=None):
+        super().__init__(parent)
+        self.setWindowTitle("程序设置")
+        self.setFixedSize(_sz(420), _sz(160))
+        self.setWindowFlags(self.windowFlags() & ~Qt.WindowContextHelpButtonHint)
+        self._settings = settings
+        self._build_ui()
+
+    def _build_ui(self):
+        layout = QVBoxLayout(self)
+        layout.setContentsMargins(_sz(16), _sz(14), _sz(16), _sz(14))
+        layout.setSpacing(_sz(10))
+
+        row = QHBoxLayout()
+        lbl = QLabel("字体缩放比例：")
+        lbl.setMinimumWidth(_sz(110))
+        row.addWidget(lbl)
+
+        self._scale_combo = QComboBox()
+        self._scale_combo.setSizeAdjustPolicy(QComboBox.AdjustToContents)
+        for key, label in [
+            ("auto", "自动（根据屏幕分辨率和缩放比例）"),
+            ("0.8",  "0.8×  小"),
+            ("1.0",  "1.0×  标准"),
+            ("1.2",  "1.2×  稍大"),
+            ("1.5",  "1.5×  大"),
+            ("2.0",  "2.0×  特大"),
+        ]:
+            self._scale_combo.addItem(label, key)
+
+        idx = self._scale_combo.findData(self._settings.font_scale)
+        if idx >= 0:
+            self._scale_combo.setCurrentIndex(idx)
+        row.addWidget(self._scale_combo)
+        row.addStretch()
+        layout.addLayout(row)
+
+        auto_val = AppSettings.compute_auto_scale()
+        info = QLabel(f"修改后需重启程序生效。当前屏幕自动比例：×{auto_val:.2f}")
+        info.setStyleSheet(f"color:#888; font-size:{_fs(11)}px;")
+        layout.addWidget(info)
+
+        layout.addStretch()
+
+        btn_row = QHBoxLayout()
+        btn_row.addStretch()
+        ok_btn = QPushButton("确定")
+        ok_btn.setFixedWidth(_sz(80))
+        ok_btn.clicked.connect(self._save_and_close)
+        cancel_btn = QPushButton("取消")
+        cancel_btn.setFixedWidth(_sz(80))
+        cancel_btn.clicked.connect(self.reject)
+        btn_row.addWidget(ok_btn)
+        btn_row.addWidget(cancel_btn)
+        layout.addLayout(btn_row)
+
+    def _save_and_close(self):
+        self._settings.font_scale = self._scale_combo.currentData()
+        self._settings.save()
+        self.accept()
+
 
 # ─────────────────────────────────────────────────────────────────
 #  Helpers
@@ -675,11 +797,11 @@ class _Toast(QLabel):
         self.setAlignment(Qt.AlignCenter)
         self.setAttribute(Qt.WA_TransparentForMouseEvents, True)
         self.setStyleSheet(
-            "background: rgba(30,140,30,210);"
+            f"background: rgba(30,140,30,210);"
-            "color: white;"
+            f"color: white;"
-            "border-radius: 10px;"
+            f"border-radius: {_sz(10)}px;"
-            "font-size: 15px;"
+            f"font-size: {_fs(15)}px;"
-            "padding: 10px 28px;"
+            f"padding: {_sz(10)}px {_sz(28)}px;"
         )
         self._timer = QTimer(self)
         self._timer.setSingleShot(True)
@@ -691,7 +813,7 @@ class _Toast(QLabel):
         self.adjustSize()
         p = self.parent()
         self.move((p.width() - self.width()) // 2,
-                  p.height() - self.height() - 70)
+                  p.height() - self.height() - _sz(70))
         self.raise_()
         self.show()
         self._timer.start(ms)
@@ -700,7 +822,7 @@ class _Toast(QLabel):
         if self.isVisible():
             p = self.parent()
             self.move((p.width() - self.width()) // 2,
-                      p.height() - self.height() - 70)
+                      p.height() - self.height() - _sz(70))
 
 
 # ─────────────────────────────────────────────────────────────────
@@ -714,7 +836,7 @@ class MainWindow(QMainWindow):
         if _COPYRIGHT:
             _title += f"  |  © {_COPYRIGHT}"
         self.setWindowTitle(_title)
-        self.resize(1300, 860)
+        self.resize(_sz(1300), _sz(860))
 
         self._worker: CameraWorker | None = None
         self._batch_worker: BatchD2CWorker | None = None
@@ -723,6 +845,7 @@ class MainWindow(QMainWindow):
         self._params_filename = "camera_params.json"
         self._color_profiles_data: list[dict] = []
         self._depth_profiles_data: list[dict] = []
+        self._app_settings = AppSettings()
 
         self._build_ui()
         # toast 覆盖在 central widget 上
@@ -733,6 +856,12 @@ class MainWindow(QMainWindow):
     # ─────────────────────────────────
 
     def _build_ui(self):
+        # 菜单栏
+        settings_menu = self.menuBar().addMenu("设置")
+        action_pref = QAction("程序设置…", self)
+        action_pref.triggered.connect(self._show_settings)
+        settings_menu.addAction(action_pref)
+
         central = QWidget()
         self.setCentralWidget(central)
         root = QVBoxLayout(central)
@@ -742,13 +871,13 @@ class MainWindow(QMainWindow):
         # 版权信息栏（右上角）
         if _COPYRIGHT:
             cr_bar = QWidget()
-            cr_bar.setFixedHeight(22)
+            cr_bar.setFixedHeight(_sz(22))
             cr_bar.setStyleSheet("background: #222;")
             cr_layout = QHBoxLayout(cr_bar)
             cr_layout.setContentsMargins(8, 0, 10, 0)
             cr_layout.addStretch()
             cr_lbl = QLabel(f"© {_COPYRIGHT}")
-            cr_lbl.setStyleSheet("color: #888; font-size: 11px;")
+            cr_lbl.setStyleSheet(f"color: #888; font-size:{_fs(11)}px;")
             cr_layout.addWidget(cr_lbl)
             root.addWidget(cr_bar)
 
@@ -757,13 +886,17 @@ class MainWindow(QMainWindow):
         tabs.addTab(self._build_d2c_tab(),     "  Orbbec Viewer 深度图 D2C  ")
         root.addWidget(tabs)
 
+    def _show_settings(self):
+        dlg = SettingsDialog(self._app_settings, self)
+        dlg.exec_()
+
     @staticmethod
     def _step_group(num: int, title: str) -> QGroupBox:
         grp = QGroupBox(f"第 {num} 步  ·  {title}")
         grp.setStyleSheet(
-            "QGroupBox { font-weight:bold; font-size:12px; color:#8ec8ff;"
+            f"QGroupBox {{ font-weight:bold; font-size:{_fs(12)}px; color:#8ec8ff;"
-            "  border:1px solid #444; border-radius:5px; margin-top:6px; padding-top:4px; }"
+            f"  border:1px solid #444; border-radius:5px; margin-top:6px; padding-top:4px; }}"
-            "QGroupBox::title { subcontrol-origin:margin; left:10px; padding:0 4px; }"
+            f"QGroupBox::title {{ subcontrol-origin:margin; left:10px; padding:0 4px; }}"
         )
         return grp
 
@@ -780,11 +913,11 @@ class MainWindow(QMainWindow):
         g1 = QHBoxLayout(grp1)
         g1.setContentsMargins(8, 4, 8, 6)
         refresh_btn = QPushButton("刷新设备")
-        refresh_btn.setFixedHeight(28)
+        refresh_btn.setFixedHeight(_sz(28))
         refresh_btn.clicked.connect(self._refresh_devices)
         g1.addWidget(refresh_btn)
         self.device_status = QLabel("未连接设备，请点击「刷新设备」")
-        self.device_status.setStyleSheet("color:#aaa; font-size:12px;")
+        self.device_status.setStyleSheet(f"color:#aaa; font-size:{_fs(12)}px;")
         g1.addWidget(self.device_status)
         g1.addStretch()
         layout.addWidget(grp1)
@@ -797,23 +930,26 @@ class MainWindow(QMainWindow):
 
         g2.addWidget(QLabel("RGB："))
         self.color_combo = QComboBox()
-        self.color_combo.setMinimumWidth(250)
+        self.color_combo.setMinimumWidth(_sz(280))
-        self.color_combo.setMaxVisibleItems(12)
+        self.color_combo.setSizeAdjustPolicy(QComboBox.AdjustToContents)
+        self.color_combo.setMaxVisibleItems(15)
         self.color_combo.setStyleSheet(COMBO_CSS)
         g2.addWidget(self.color_combo)
 
         g2.addSpacing(12)
         g2.addWidget(QLabel("深度："))
         self.depth_combo = QComboBox()
-        self.depth_combo.setMinimumWidth(250)
+        self.depth_combo.setMinimumWidth(_sz(280))
-        self.depth_combo.setMaxVisibleItems(12)
+        self.depth_combo.setSizeAdjustPolicy(QComboBox.AdjustToContents)
+        self.depth_combo.setMaxVisibleItems(15)
         self.depth_combo.setStyleSheet(COMBO_CSS)
         g2.addWidget(self.depth_combo)
 
         g2.addSpacing(12)
         g2.addWidget(QLabel("Preset："))
         self.preset_combo = QComboBox()
-        self.preset_combo.setMinimumWidth(160)
+        self.preset_combo.setMinimumWidth(_sz(180))
+        self.preset_combo.setSizeAdjustPolicy(QComboBox.AdjustToContents)
         self.preset_combo.setMaxVisibleItems(12)
         self.preset_combo.setStyleSheet(COMBO_CSS)
         self.preset_combo.setEnabled(False)
@@ -822,7 +958,7 @@ class MainWindow(QMainWindow):
         g2.addStretch()
         self.stream_btn = QPushButton("开启")
         self.stream_btn.setCheckable(True)
-        self.stream_btn.setFixedSize(88, 30)
+        self.stream_btn.setFixedSize(_sz(88), _sz(30))
         self.stream_btn.setStyleSheet(
             "QPushButton{ border-radius:5px; border:none; font-weight:bold; }"
             "QPushButton:!checked{ background:#555; color:#ccc; }"
@@ -841,16 +977,16 @@ class MainWindow(QMainWindow):
 
         today = datetime.now()
         self.session_edit = QLineEdit(f"{today.year}年{today.month}月{today.day}日")
-        self.session_edit.setMinimumWidth(160)
+        self.session_edit.setMinimumWidth(_sz(160))
         g3.addWidget(self.session_edit)
 
         create_btn = QPushButton("创建 / 载入")
-        create_btn.setFixedHeight(28)
+        create_btn.setFixedHeight(_sz(28))
         create_btn.clicked.connect(self._create_session)
         g3.addWidget(create_btn)
 
         self.session_status = QLabel("（未创建）")
-        self.session_status.setStyleSheet("color:gray; font-size:12px;")
+        self.session_status.setStyleSheet(f"color:gray; font-size:{_fs(12)}px;")
         g3.addWidget(self.session_status)
         g3.addStretch()
 
@@ -873,11 +1009,11 @@ class MainWindow(QMainWindow):
             box = QVBoxLayout()
             hdr = QLabel(title)
             hdr.setAlignment(Qt.AlignCenter)
-            hdr.setStyleSheet("font-weight:bold; font-size:13px;")
+            hdr.setStyleSheet(f"font-weight:bold; font-size:{_fs(13)}px;")
             box.addWidget(hdr)
             lbl = QLabel("等待画面…")
             lbl.setAlignment(Qt.AlignCenter)
-            lbl.setMinimumSize(540, 360)
+            lbl.setMinimumSize(_sz(540), _sz(360))
             lbl.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
             lbl.setStyleSheet("background:#111; border:1px solid #555; color:#666;")
             setattr(self, attr, lbl)
@@ -890,18 +1026,18 @@ class MainWindow(QMainWindow):
         step4_row = QHBoxLayout()
         step4_lbl = QLabel("第 4 步  ·  拍照")
         step4_lbl.setStyleSheet(
-            "color:#8ec8ff; font-weight:bold; font-size:12px;")
+            f"color:#8ec8ff; font-weight:bold; font-size:{_fs(12)}px;")
         step4_row.addWidget(step4_lbl)
         step4_row.addStretch()
 
         hint = QLabel("快捷键  S")
-        hint.setStyleSheet("color:#666; font-size:11px;")
+        hint.setStyleSheet(f"color:#666; font-size:{_fs(11)}px;")
         step4_row.addWidget(hint)
 
         self.capture_btn = QPushButton("拍照")
-        self.capture_btn.setFixedSize(160, 44)
+        self.capture_btn.setFixedSize(_sz(160), _sz(44))
         self.capture_btn.setEnabled(False)
-        f = QFont(); f.setPointSize(13); f.setBold(True)
+        f = QFont(); f.setPointSize(_fs(13)); f.setBold(True)
         self.capture_btn.setFont(f)
         self.capture_btn.setStyleSheet(
             "QPushButton{ background:#2a6ebb; color:white; border-radius:8px; border:none; }"
@@ -928,11 +1064,11 @@ class MainWindow(QMainWindow):
         g1 = QHBoxLayout(grp1)
         g1.setContentsMargins(8, 4, 8, 6)
         d2c_refresh_btn = QPushButton("刷新设备")
-        d2c_refresh_btn.setFixedHeight(28)
+        d2c_refresh_btn.setFixedHeight(_sz(28))
         d2c_refresh_btn.clicked.connect(self._refresh_devices)
         g1.addWidget(d2c_refresh_btn)
         self.d2c_device_status = QLabel("未连接设备，请点击「刷新设备」")
-        self.d2c_device_status.setStyleSheet("color:#aaa; font-size:12px;")
+        self.d2c_device_status.setStyleSheet(f"color:#aaa; font-size:{_fs(12)}px;")
         g1.addWidget(self.d2c_device_status)
         g1.addStretch()
         layout.addWidget(grp1)
@@ -946,22 +1082,24 @@ class MainWindow(QMainWindow):
         combo_row = QHBoxLayout()
         combo_row.addWidget(QLabel("RGB："))
         self.d2c_color_combo = QComboBox()
-        self.d2c_color_combo.setMinimumWidth(240)
+        self.d2c_color_combo.setMinimumWidth(_sz(280))
-        self.d2c_color_combo.setMaxVisibleItems(12)
+        self.d2c_color_combo.setSizeAdjustPolicy(QComboBox.AdjustToContents)
+        self.d2c_color_combo.setMaxVisibleItems(15)
         self.d2c_color_combo.setStyleSheet(COMBO_CSS)
         combo_row.addWidget(self.d2c_color_combo)
 
         combo_row.addSpacing(12)
         combo_row.addWidget(QLabel("深度："))
         self.d2c_depth_combo = QComboBox()
-        self.d2c_depth_combo.setMinimumWidth(240)
+        self.d2c_depth_combo.setMinimumWidth(_sz(280))
-        self.d2c_depth_combo.setMaxVisibleItems(12)
+        self.d2c_depth_combo.setSizeAdjustPolicy(QComboBox.AdjustToContents)
+        self.d2c_depth_combo.setMaxVisibleItems(15)
         self.d2c_depth_combo.setStyleSheet(COMBO_CSS)
         combo_row.addWidget(self.d2c_depth_combo)
 
         combo_row.addSpacing(12)
         fetch_btn = QPushButton("从设备获取参数")
-        fetch_btn.setFixedHeight(28)
+        fetch_btn.setFixedHeight(_sz(28))
         fetch_btn.clicked.connect(self._fetch_params_from_device)
         combo_row.addWidget(fetch_btn)
         combo_row.addStretch()
@@ -969,20 +1107,20 @@ class MainWindow(QMainWindow):
 
         sep = QLabel("── 或直接指定 JSON 文件 ──")
         sep.setAlignment(Qt.AlignCenter)
-        sep.setStyleSheet("color:#666; font-size:11px;")
+        sep.setStyleSheet(f"color:#666; font-size:{_fs(11)}px;")
         pg.addWidget(sep)
 
         json_row = QHBoxLayout()
         self.params_path_edit = QLineEdit()
         self.params_path_edit.setPlaceholderText("留空则使用上方自动查找结果…")
         json_row.addWidget(self.params_path_edit)
-        br2 = QPushButton("浏览…"); br2.setFixedWidth(70)
+        br2 = QPushButton("浏览…"); br2.setFixedWidth(_sz(70))
         br2.clicked.connect(lambda: self._browse_json(self.params_path_edit))
         json_row.addWidget(br2)
         pg.addLayout(json_row)
 
         self.params_selected_lbl = QLabel("（尚未选定参数文件）")
-        self.params_selected_lbl.setStyleSheet("color:#888; font-size:12px;")
+        self.params_selected_lbl.setStyleSheet(f"color:#888; font-size:{_fs(12)}px;")
         pg.addWidget(self.params_selected_lbl)
         layout.addWidget(grp2)
 
@@ -994,7 +1132,7 @@ class MainWindow(QMainWindow):
         self.d2c_dir_edit = QLineEdit()
         self.d2c_dir_edit.setPlaceholderText("选择包含 PNG 深度图的文件夹…")
         g3.addWidget(self.d2c_dir_edit)
-        br1 = QPushButton("浏览…"); br1.setFixedWidth(70)
+        br1 = QPushButton("浏览…"); br1.setFixedWidth(_sz(70))
         br1.clicked.connect(lambda: self._browse_dir(self.d2c_dir_edit))
         g3.addWidget(br1)
         layout.addWidget(grp3)
@@ -1002,14 +1140,14 @@ class MainWindow(QMainWindow):
         # ── 第 4 步：开始转换 ──
         step4_row = QHBoxLayout()
         step4_lbl = QLabel("第 4 步  ·  开始转换")
-        step4_lbl.setStyleSheet("color:#8ec8ff; font-weight:bold; font-size:12px;")
+        step4_lbl.setStyleSheet(f"color:#8ec8ff; font-weight:bold; font-size:{_fs(12)}px;")
         step4_row.addWidget(step4_lbl)
         self.splat_check = QCheckBox("Splat 3×3 填充（减少 D2C 空洞，默认开启）")
         self.splat_check.setChecked(True)
         step4_row.addWidget(self.splat_check)
         step4_row.addStretch()
         self.run_d2c_btn = QPushButton("▶  开始批量 D2C 转换")
-        self.run_d2c_btn.setFixedHeight(36)
+        self.run_d2c_btn.setFixedHeight(_sz(36))
         self.run_d2c_btn.setStyleSheet(
             "QPushButton{ background:#2a7a2a; color:white; border-radius:6px; border:none; }"
             "QPushButton:hover{ background:#3a9a3a; }"
@@ -1024,7 +1162,7 @@ class MainWindow(QMainWindow):
         self.d2c_log = QTextEdit()
         self.d2c_log.setReadOnly(True)
         self.d2c_log.setStyleSheet(
-            "font-family: Consolas,'Courier New',monospace; font-size:12px;")
+            f"font-family: Consolas,'Courier New',monospace; font-size:{_fs(12)}px;")
         layout.addWidget(self.d2c_log, stretch=1)
 
         return w
@@ -1404,6 +1542,14 @@ def main():
     app = QApplication(sys.argv)
     app.setStyle("Fusion")
 
+    global _UI_SCALE
+    _cfg = AppSettings()
+    _UI_SCALE = _cfg.get_scale_factor()
+    if _UI_SCALE != 1.0:
+        base = app.font()
+        base.setPointSizeF(base.pointSizeF() * _UI_SCALE)
+        app.setFont(base)
+
     from PyQt5.QtGui import QPalette, QColor
     pal = QPalette()
     pal.setColor(QPalette.Window,          QColor(45,  45,  45))