feat: add widget for settings

src/qt_utils.py

@@ -3,6 +3,7 @@
 from PyQt5.QtCore import QEventLoop
 from PyQt5.QtWidgets import QProgressDialog, QLineEdit
 from PyQt5.QtCore import Qt
+from PyQt5 import QtGui
 
 
 class ClickableLineEdit(QLineEdit):
@@ -36,6 +37,64 @@ def _internal_done_callback(self, future):
         self.finished.emit(data)
 
 
+class LineEdit(QLineEdit):
+    colorize_invalid_value = False
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.returnPressed.connect(self.value_formatting)
+        self.textChanged.connect(self.input_validation)
+        self.textChanged.connect(self.colorize_field)
+
+    def setValidator(self, validator, colorize_invalid_value=False):
+        self.colorize_invalid_value = colorize_invalid_value
+        super().setValidator(validator)
+
+    def focusOutEvent(self, event):
+        self.value_formatting()
+        self.colorize_field()
+        super().focusOutEvent(event)
+
+    def fill_empty(self):
+        if (not self.text()) or (self.text() == "."):
+            self.setText("0")
+
+    def value_formatting(self):
+        self.fill_empty()
+        if isinstance(self.validator(), QtGui.QDoubleValidator):
+            cursor_position = self.cursorPosition()
+            self.setText(str(float(self.text())))
+            self.setCursorPosition(cursor_position)
+
+    def input_validation(self):
+        cursor_position = self.cursorPosition()
+        self.setText(self.text().replace(",", "."))
+
+        if (not self.colorize_invalid_value) and self.validator():
+            value = float(self.text()) if self.text() else 0
+
+            max_value = self.validator().top()
+            min_value = self.validator().bottom()
+
+            if value > max_value:
+                self.setText(str(max_value))
+            if value < min_value:
+                self.setText(str(min_value))
+        self.setCursorPosition(cursor_position)
+
+    def colorize_field(self):
+        default_background_color = "#0e1621"
+        invalid_value_background_color = "#ff6e00"
+
+        if self.colorize_invalid_value:
+            if self.hasAcceptableInput() or (not self.text()):
+                self.setStyleSheet(f"background-color: {default_background_color}")
+            else:
+                self.setStyleSheet(
+                    f"background-color: {invalid_value_background_color}"
+                )
+
+
 def progress_dialog(title, msg, work_fn, parent=None):
     """Show a blocking progress dialog while executing work in background thread"""
     progress = QProgressDialog(msg, None, 0, 0, parent=parent)