70 lines
1.6 KiB
Python
70 lines
1.6 KiB
Python
import numpy as np
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import cv2
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from kivy.app import App
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from kivy.properties import BooleanProperty
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from kivy.core.window import Window
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from kivy.graphics.texture import Texture
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from kivy.uix.image import Image
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from kivy.clock import Clock
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class QRCodeReader(Image):
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opened = BooleanProperty(False)
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def __init__(self, **kwargs):
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super().__init__(**kwargs)
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self.register_event_type('on_data')
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self.task = None
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if self.opened:
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self.open()
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def open(self):
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self.opened = True
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self.cam = cv2.VideoCapture(0)
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self.detector = cv2.QRCodeDetector()
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self.task = Clock.schedule_interval(self.read,1.0/30.0)
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Window.add_widget(self)
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def on_data(self,d):
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print('QRCodeReader().on_data(),data=',d)
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self.dismiss()
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def on_touch_down(self,touch):
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if not self.colide_point(*touch.pos):
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self.dismiss()
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super().on_touch_down(touch)
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def dismiss(self, *args, **kw):
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if not self.opened:
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return
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self.opened = False
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self.task.cancel()
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self.task = None
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self.cam.release()
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cv2.destroyAllWindows()
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Window.remove_widget(self)
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def showImage(self,img):
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image = np.rot90(np.swapaxes(img,0,1))
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tex = Texture.create(size=(image.shape[1], image.shape[0]),
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colorfmt='rgb')
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tex.blit_buffer(image.tostring(),colorfmt='rgb', bufferfmt='ubyte')
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self.texture = tex
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def read(self,p):
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_, img = self.cam.read()
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self.showImage(img)
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data,bbox,_ = self.detector.detectAndDecode(img)
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if data:
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d = {
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'data':data
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}
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self.dispatch('on_data',d)
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if __name__ == '__main__':
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class MyApp(App):
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def build(self):
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r = QRCodeReader()
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return r
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myapp = MyApp()
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myapp.run()
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