Calculadora: QLineEdit e o display

aula202-calculadora/display.py

@@ -0,0 +1,17 @@
+from PySide6.QtCore import Qt
+from PySide6.QtWidgets import QLineEdit
+from variables import BIG_FONT_SIZE, MINIMUM_WIDTH, TEXT_MARGIN
+
+
+class Display(QLineEdit):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.configStyle()
+
+    def configStyle(self):
+        margins = [TEXT_MARGIN for _ in range(4)]
+        self.setStyleSheet(f'font-size: {BIG_FONT_SIZE}px;')
+        self.setMinimumHeight(BIG_FONT_SIZE * 2)
+        self.setMinimumWidth(MINIMUM_WIDTH)
+        self.setAlignment(Qt.AlignmentFlag.AlignRight)
+        self.setTextMargins(*margins)

aula202-calculadora/main.py

@@ -1,5 +1,6 @@
 import sys
 
+from display import Display
 from main_window import MainWindow
 from PySide6.QtGui import QIcon
 from PySide6.QtWidgets import QApplication
@@ -15,6 +16,10 @@ if __name__ == '__main__':
     window.setWindowIcon(icon)
     app.setWindowIcon(icon)
 
+    # Display
+    display = Display()
+    window.addToVLayout(display)
+
     # Executa tudo
     window.adjustFixedSize()
     window.show()

aula202-calculadora/main_window.py

@@ -19,5 +19,5 @@ class MainWindow(QMainWindow):
         self.adjustSize()
         self.setFixedSize(self.width(), self.height())
 
-    def addWidgetToVLayout(self, widget: QWidget):
+    def addToVLayout(self, widget: QWidget):
         self.vLayout.addWidget(widget)

aula202-calculadora/variables.py

@@ -3,3 +3,10 @@ from pathlib import Path
 ROOT_DIR = Path(__file__).parent
 FILES_DIR = ROOT_DIR / 'files'
 WINDOW_ICON_PATH = FILES_DIR / 'icon.png'
+
+# Sizing
+BIG_FONT_SIZE = 40
+MEDIUM_FONT_SIZE = 24
+SMALL_FONT_SIZE = 18
+TEXT_MARGIN = 15
+MINIMUM_WIDTH = 500