Drawing checkerboard pattern PyQt6

PyQt6 is a set of Python bindings for the Qt application framework and runs on all platforms supported by Qt including Windows, OS X, Linux, iOS and Android. It is a comprehensive set of GUI components for building cross-platform desktop applications.

Creating a checkerboard pattern using PyQt6

To draw a checkerboard pattern using PyQt6, you can use the QPainter class to paint the pattern on a QWidget. Here’s a simple example that demonstrates how to create a checkerboard pattern:

      
        import sys
        from PyQt6.QtWidgets import QApplication, QWidget
        from PyQt6.QtGui import QPainter, QColor
        from PyQt6.QtCore import Qt
        
        class Checkerboard(QWidget):
            def paintEvent(self, event):
                painter = QPainter(self)
                painter.setRenderHint(QPainter.RenderHint.Antialiasing)
                
                # set the size of each square
                square_size = 50
                
                # iterate through rows and columns to draw the pattern
                for i in range(8):
                    for j in range(8):
                        if (i + j) % 2 == 0:
                            painter.fillRect(i * square_size, j * square_size, square_size, square_size, QColor(Qt.GlobalColor.black))
                        else:
                            painter.fillRect(i * square_size, j * square_size, square_size, square_size, QColor(Qt.GlobalColor.white))
        
        if __name__ == "__main__":
            app = QApplication(sys.argv)
            window = Checkerboard()
            window.resize(400, 400)
            window.show()
            sys.exit(app.exec())
      
    

In this example, we create a custom QWidget called Checkerboard and override its paintEvent method to paint the checkerboard pattern using the QPainter class. We set the size of each square and iterate through the rows and columns, drawing black and white squares based on their position.

Conclusion

Creating a checkerboard pattern using PyQt6 is straightforward with the QPainter class. By leveraging the powerful drawing capabilities of PyQt6, you can easily create custom patterns and graphics for your desktop applications.