customviews.py 文件源码

def __init__(self, initial_width, initial_height, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self._initial_width = initial_width
        self._initial_height = initial_height
        self.frame = (10, 100, 275, 250)
        self.background_color = 'white'
        self.img_width = ui.TextField(frame=(10, 30, 100, 25),
                                      keyboard_type=ui.KEYBOARD_DECIMAL_PAD,
                                      text=str(initial_width),
                                      action=self.update_height)
        self.add_subview(self.img_width)
        width_label = ui.Label(frame=(10, 5, 150, 25), text='Image Width')
        self.add_subview(width_label)
        self.img_height = ui.TextField(frame=(150, 30, 100, 25),
                                       keyboard_type=ui.KEYBOARD_DECIMAL_PAD,
                                       text=str(initial_height),
                                       action=self.update_width)
        self.add_subview(self.img_height)
        height_label = ui.Label(frame=(150, 5, 150, 25), text='Image Height')
        self.add_subview(height_label)
        aspect_ratio = self._initial_width / self._initial_height
        self.aspect = ui.TextField(frame=(70, 100, 150, 25),
                                   text=str(aspect_ratio),
                                   keyboard_type=ui.KEYBOARD_DECIMAL_PAD,
                                   alignment=ui.ALIGN_CENTER,
                                   action=self.updatefrom_aspectratio)
        self.add_subview(self.aspect)
        aspect_label = ui.Label(frame=(70, 75, 150, 25), 
                                text='Aspect',
                                alignment=ui.ALIGN_CENTER)
        self.add_subview(aspect_label)
        self.save_button = ui.Button(frame=(175, 150, 50, 25), 
                                     title='Save',
                                     action=self.save)
        self.add_subview(self.save_button)
        self.cancel_button = ui.Button(frame=(30, 150, 50, 25), 
                                     title='Cancel',
                                     action=self.cancel)
        self.add_subview(self.cancel_button)