Restore image settings on cancel; live sync

Save original image_width/image_offset when opening Settings and restore them if the dialog is cancelled. Add valueChanged handlers to immediately update state.image_width and state.image_offset, enforce an image width maximum of 2500, and refactor Save wiring to a dedicated handler that calls save_settings(dialog.accept, ...). Connect dialog.finished to restore temp values on rejection and clean up dialog layout/logic.

src/interface/dialogs/settings.py

@@ -25,6 +25,8 @@ SVG_FOLDER = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path
 
 
 def settings_dialog(self):
+    temp_image_width = state.image_width
+    temp_image_offset = state.image_offset
 
     def create_widget(widget_type, label_text, **kwargs):
         container = QWidget()
@@ -149,12 +151,15 @@ def settings_dialog(self):
     # Image Width SpinBox
     image_width_container, image_width = create_widget(QSpinBox, "Image Width: ", width=180, height=30)
     image_width.setMinimum(0)
+    image_width.setMaximum(2500)
     image_width.setValue(state.image_width)
+    image_width.valueChanged.connect(lambda val: setattr(state, 'image_width', val))
 
     # Image Offset SpinBox
     image_offset_container, image_offset = create_widget(QSpinBox, "Corner Image Offset: ", width=180, height=30)
     image_offset.setMinimum(0)
     image_offset.setValue(state.image_offset)
+    image_offset.valueChanged.connect(lambda val: setattr(state, 'image_offset', val))
 
     # Speed Limiting
     down_speed_limit_container, down_speed_limit = create_widget(QSpinBox, "Max Download Speed (KiB, 0 for unlimited): ", width=180, height=30)
@@ -204,8 +209,11 @@ def settings_dialog(self):
 
     save_btn = QPushButton("Save")
     cancel_btn = QPushButton("Cancel")
-        save_btn.clicked.connect(lambda: save_settings(
+    save_btn.clicked.connect(lambda: handle_save())
-            close_settings, 
+
+    def handle_save():
+        save_settings(
+            dialog.accept, 
             api_url.text(), 
             download_path.text(), 
             down_speed_limit.value(),
@@ -217,7 +225,7 @@ def settings_dialog(self):
             interface_select.currentText(),
             image_width.value(),
             image_offset.value()
-            ))
+            )
 
     cancel_btn.clicked.connect(dialog.reject)
     layout.addWidget(cancel_btn)
@@ -233,4 +241,10 @@ def settings_dialog(self):
     dialog_layout.addWidget(tabs)
     dialog_layout.addLayout(layout)
 
+    def on_dialog_finished(result):
+        if result == QtWidgets.QDialog.DialogCode.Rejected:
+            state.image_width = temp_image_width
+            state.image_offset = temp_image_offset
+
+    dialog.finished.connect(on_dialog_finished)
     dialog.exec()