camera.py 文件源码

def updateLockStatus(self, status, reason):
        indicationColor = Qt.black

        if status == QCamera.Searching:
            self.ui.statusbar.showMessage("Focusing...")
            self.ui.lockButton.setText("Focusing...")
            indicationColor = Qt.yellow
        elif status == QCamera.Locked:
            self.ui.lockButton.setText("Unlock")
            self.ui.statusbar.showMessage("Focused", 2000)
            indicationColor = Qt.darkGreen
        elif status == QCamera.Unlocked:
            self.ui.lockButton.setText("Focus")

            if reason == QCamera.LockFailed:
                self.ui.statusbar.showMessage("Focus Failed", 2000)
                indicationColor = Qt.red

        palette = self.ui.lockButton.palette()
        palette.setColor(QPalette.ButtonText, indicationColor)
        self.ui.lockButton.setPalette(palette)