feat(sampling): add adaptive sampling toggle + interactive sampling point viewer

src/gui/panels/step7_panel.py

@@ -12,6 +12,7 @@ from PyQt5.QtWidgets import (
 )
 
 from src.gui.components.custom_widgets import FileSelectWidget
+from src.gui.dialogs import SamplingViewerDialog
 from src.gui.styles import ModernStylesheet
 
 
@@ -58,6 +59,10 @@ class Step7Panel(QWidget):
         self.chunk_size.setValue(1000)
         params_layout.addRow("处理块大小:", self.chunk_size)
 
+        self.use_adaptive_sampling = QCheckBox("启用自适应采样")
+        self.use_adaptive_sampling.setChecked(True)
+        params_layout.addRow("采样模式:", self.use_adaptive_sampling)
+
         params_group.setLayout(params_layout)
         layout.addWidget(params_group)
 
@@ -80,15 +85,25 @@ class Step7Panel(QWidget):
         self.run_btn.clicked.connect(self.run_step)
         layout.addWidget(self.run_btn)
 
+        # 交互式预览按钮
+        self.preview_btn = QPushButton("📊 交互式预览采样点与光谱")
+        self.preview_btn.setEnabled(False)
+        self.preview_btn.clicked.connect(self._open_sampling_viewer)
+        layout.addWidget(self.preview_btn)
+
         layout.addStretch()
         self.setLayout(layout)
 
+        # 监听输出路径变化，实时更新预览按钮状态
+        self.output_file.line_edit.textChanged.connect(self._on_output_changed)
+
     def get_config(self):
         """获取配置"""
         config = {
             'interval': self.interval.value(),
             'sample_radius': self.sample_radius.value(),
             'chunk_size': self.chunk_size.value(),
+            'use_adaptive_sampling': self.use_adaptive_sampling.isChecked(),
         }
         deglint_img_path = self.deglint_img_file.get_path()
         if deglint_img_path:
@@ -96,7 +111,6 @@ class Step7Panel(QWidget):
         water_mask_path = self.water_mask_file.get_path()
         if water_mask_path:
             config['water_mask_path'] = water_mask_path
-        # 注意：step7_generate_sampling_points 不接受 output_path 参数，输出路径由 pipeline 内部自动生成
         return config
 
     def set_config(self, config):
@@ -107,6 +121,8 @@ class Step7Panel(QWidget):
             self.sample_radius.setValue(config['sample_radius'])
         if 'chunk_size' in config:
             self.chunk_size.setValue(config['chunk_size'])
+        if 'use_adaptive_sampling' in config:
+            self.use_adaptive_sampling.setChecked(config['use_adaptive_sampling'])
         if 'deglint_img_path' in config:
             self.deglint_img_file.set_path(config['deglint_img_path'])
         if 'water_mask_path' in config:
@@ -195,6 +211,9 @@ class Step7Panel(QWidget):
             os.makedirs(os.path.dirname(output_path), exist_ok=True)
             self.output_file.set_path(output_path.replace('\\', '/'))
 
+        # 4. 同步更新预览按钮状态（路径可能已自动填充）
+        self._check_csv_exists()
+
     def run_step(self):
         """独立运行步骤7"""
         deglint_img_path = self.deglint_img_file.get_path()
@@ -206,3 +225,28 @@ class Step7Panel(QWidget):
         if hasattr(main_window, 'run_single_step'):
             config = {'step7': self.get_config()}
             main_window.run_single_step('step7', config)
+
+    def _check_csv_exists(self):
+        """检查 output csv 是否存在，驱动预览按钮启停"""
+        csv_path = self.output_file.get_path()
+        enabled = bool(csv_path and os.path.isabs(csv_path) and os.path.exists(csv_path))
+        self.preview_btn.setEnabled(enabled)
+        return enabled
+
+    def _on_output_changed(self, _text=None):
+        """输出路径输入框内容变化时调用（_text 为 line_edit.textChanged 信号参数）"""
+        self._check_csv_exists()
+
+    def _open_sampling_viewer(self):
+        """打开交互式采样点查看器弹窗"""
+        csv_path = self.output_file.get_path()
+        if not csv_path or not os.path.exists(csv_path):
+            QMessageBox.warning(
+                self, "文件不存在",
+                f"采样点 CSV 文件不存在：{csv_path}\n请先运行步骤7生成数据。"
+            )
+            return
+        dialog = SamplingViewerDialog(csv_path, self)
+        dialog.exec_()
+        # 弹窗关闭后再次检查状态（可能文件被覆盖等）
+        self._check_csv_exists()