from PyQt6.QtWidgets import QGraphicsView, QGraphicsScene, QMainWindow, QApplication
from PyQt6.QtCore import Qt
from PyQt6.QtGui import QPixmap, QMouseEvent
from PyQt6 import uic

class CustomGraphicsView(QGraphicsView):
    def __init__(self, parent=None):
        super(CustomGraphicsView, self).__init__(parent)
        self.scene = QGraphicsScene()
        self.setScene(self.scene)

    def load_image(self, image_path):
        pixmap = QPixmap(image_path)
        self.scene.clear()
        self.scene.addPixmap(pixmap)
        self.fitInView(self.scene.itemsBoundingRect(), 1)

    def change_image(self, new_image_path):
        self.load_image(new_image_path)

    def mousePressEvent(self, event: QMouseEvent):
        if event.button() == Qt.MouseButton.LeftButton:
            print("Presionaste el botón izquierdo del mouse.")
        super(CustomGraphicsView, self).mousePressEvent(event)

    def mouseMoveEvent(self, event: QMouseEvent):
        if event.buttons() == Qt.MouseButton.LeftButton:
            print("Estás arrastrando el puntero con el botón izquierdo presionado.")
        super(CustomGraphicsView, self).mouseMoveEvent(event)

    def mouseReleaseEvent(self, event: QMouseEvent):
        if event.button() == Qt.MouseButton.LeftButton:
            print("Soltaste el botón izquierdo del mouse.")
        super(CustomGraphicsView, self).mouseReleaseEvent(event)

class Main(QMainWindow):
    def __init__(self):
        super(Main, self).__init__()
        uic.loadUi('tu_archivo.ui', self)

        # Encuentra el QGraphicsView en la interfaz cargada
        graphicsView = self.findChild(QGraphicsView, 'graphicsView')

        # Reemplaza el QGraphicsView con tu CustomGraphicsView
        self.customGraphicsView = CustomGraphicsView(self)
        self.customGraphicsView.setGeometry(graphicsView.geometry())
        graphicsView.setParent(None)  # Desconecta el QGraphicsView original
        self.setCentralWidget(self.customGraphicsView)  # Establece el CustomGraphicsView como el widget central

        self.pushButton.clicked.connect(self.on_pushButton_clicked)

    def on_pushButton_clicked(self):
        image_path = 'ruta/a/la/imagen.png'
        self.customGraphicsView.load_image(image_path)

    def cambiar_imagen(self, nueva_imagen):
        self.customGraphicsView.change_image(nueva_imagen)

if __name__ == "__main__":
    import sys
    app = QApplication(sys.argv)
    window = Main()
    window.show()
    sys.exit(app.exec())