PySimpleGUI - 图像元素

PySimpleGUI 库包含一个 Image 元素，它能够显示 PNG、GIF、PPM/PGM 格式的图像。Image() 函数需要一个必需参数，即图像文件的路径。

以下代码在应用程序窗口上显示 PySimpleGUI 徽标。

import PySimpleGUI as psg
layout = [[psg.Text(text='Python GUIs for Humans',
   font=('Arial Bold', 16),
   size=20, expand_x=True,
   justification='center')],
   [psg.Image('PySimpleGUI_Logo.png',
   expand_x=True, expand_y=True )]
]
window = psg.Window('HelloWorld', layout, size=(715,350), keep_on_top=True)
while True:
   event, values = window.read()
   print(event, values)
   if event in (None, 'Exit'):
      break
window.close()

它将生成以下输出窗口 −

使用 Graph 元素

你还可以使用 Graph 容器元素上的 draw_image() 方法在该元素上显示图像，如下所示 −

import PySimpleGUI as psg
graph = psg.Graph(canvas_size=(700, 300),
   graph_bottom_left=(0, 0),
   graph_top_right=(700, 300),
   background_color='red',
   enable_events=True,
   drag_submits=True, key='graph')
layout = [
   [graph],
   [psg.Button('LEFT'), psg.Button('RIGHT'),
   psg.Button('UP'), psg.Button('DOWN')]
]
window = psg.Window('Graph test', layout, finalize=True)
x1, y1 = 350, 150
id = graph.draw_image(filename="PySimpleGUI_Logo.png", location=(0, 300))
while True:
   event, values = window.read()
   if event == psg.WIN_CLOSED:
      break
   if event == 'RIGHT':
      graph.MoveFigure(id, 10, 0)
   if event == 'LEFT':
      graph.MoveFigure(id, -10, 0)
   if event == 'UP':
      graph.MoveFigure(id, 0, 10)
   if event == 'DOWN':
      graph.MoveFigure(id, 0, -10)
   if event == "graph+UP":
      x2, y2 = values['graph']
      graph.MoveFigure(id, x2 - x1, y2 - y1)
      x1, y1 = x2, y2
window.close()

它将生成以下输出窗口 −