This commit is contained in:
yumoqing 2020-08-01 21:24:22 +08:00
parent c9510fbdf5
commit 757c080f1c
2 changed files with 120 additions and 159 deletions

View File

@ -6,181 +6,141 @@ from functools import partial
from kivy.factory import Factory
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.image import Image
from kivy.graphics.texture import Texture
from kivy.properties import StringProperty
from kivy.properties import ObjectProperty, StringProperty, ListProperty,\
BooleanProperty
BooleanProperty
from kivy.lang import Builder
from kivy.clock import Clock
import qrcode
Builder.load_string('''
<QRCodeWidget>
on_parent: if args[1]: qrimage.source = self.loading_image
canvas.before:
# Draw white Rectangle
Color:
rgba: root.background_color
Rectangle:
size: self.size
pos: self.pos
canvas.after:
Color:
rgba: .5, .5, .5, 1 if root.show_border else 0
Line:
width: dp(1.333)
points:
dp(2), dp(2),\
self.width - dp(2), dp(2),\
self.width - dp(2), self.height - dp(2),\
dp(2), self.height - dp(2),\
dp(2), dp(2)
Image
id: qrimage
pos_hint: {'center_x': .5, 'center_y': .5}
allow_stretch: True
size_hint: None, None
size: root.width * .9, root.height * .9
''')
class QRCodeWidget(FloatLayout):
data = StringProperty(None, allow_none=True)
''' Data using which the qrcode is generated.
show_border = BooleanProperty(True)
'''Whether to show border around the widget.
:data:`data` is a :class:`~kivy.properties.StringProperty`, defaulting to
`None`.
'''
:data:`show_border` is a :class:`~kivy.properties.BooleanProperty`,
defaulting to `True`.
'''
loading_image = StringProperty('data/images/image-loading.gif')
'''Intermediate image to be displayed while the widget ios being loaded.
:data:`loading_image` is a :class:`~kivy.properties.StringProperty`,
defaulting to `'data/images/image-loading.gif'`.
'''
data = StringProperty(None, allow_none=True)
''' Data using which the qrcode is generated.
def __init__(self, **kwargs):
self.qrimage = Image(allow_stretch=True)
self.addr = None
super(QRCodeWidget, self).__init__(**kwargs)
self.background_color = [1,1,1,1]
self.qr = None
self._qrtexture = None
self.qrimage.pos_hint = {'center_x':0.5, 'center_y':0.5}
self.add_widget(self.qrimage)
def on_size(self,o,s):
self.qrimage.width = self.width
self.qrimage.height = self.height
self.on_data(None,self.data)
:data:`data` is a :class:`~kivy.properties.StringProperty`, defaulting to
`None`.
'''
def on_data(self, instance, value):
if not (self.canvas or value):
return
img = self.qrimage
img.anim_delay = .25
img.source = self.loading_image
self.generate_qr(value)
background_color = ListProperty((1, 1, 1, 1))
''' Background color of the background of the widget to be displayed
behind the qrcode.
def generate_qr(self, value):
self.set_addr(value)
self.update_qr()
:data:`background_color` is a :class:`~kivy.properties.ListProperty`,
defaulting to `(1, 1, 1, 1)`.
'''
def set_addr(self, addr):
if self.addr == addr:
return
MinSize = 210 if len(addr) < 128 else 500
self.setMinimumSize((MinSize, MinSize))
self.addr = addr
self.qr = None
loading_image = StringProperty('data/images/image-loading.gif')
'''Intermediate image to be displayed while the widget ios being loaded.
:data:`loading_image` is a :class:`~kivy.properties.StringProperty`,
defaulting to `'data/images/image-loading.gif'`.
'''
def update_qr(self):
if not self.addr and self.qr:
return
QRCode = qrcode.QRCode
L = qrcode.constants.ERROR_CORRECT_L
addr = self.addr
try:
self.qr = qr = QRCode(
version=None,
error_correction=L,
box_size=10,
border=0,
)
qr.add_data(addr)
qr.make(fit=True)
self.qr = qr
self.update_texture()
except Exception as e:
print('eeeee',e)
self.qr=None
def __init__(self, **kwargs):
super(QRCodeWidget, self).__init__(**kwargs)
self.addr = None
self.qr = None
self._qrtexture = None
def setMinimumSize(self, size):
# currently unused, do we need this?
self._texture_size = size
def on_data(self, instance, value):
if not (self.canvas or value):
return
img = self.ids.get('qrimage', None)
def _create_texture(self, k):
self._qrtexture = texture = Texture.create(size=(k,k), colorfmt='rgb')
# don't interpolate texture
texture.min_filter = 'nearest'
texture.mag_filter = 'nearest'
if not img:
# if texture hasn't yet been created delay the texture updation
Clock.schedule_once(lambda dt: self.on_data(instance, value))
return
img.anim_delay = .25
img.source = self.loading_image
Thread(target=partial(self.generate_qr, value)).start()
def update_texture(self):
if not self.addr:
return
def generate_qr(self, value):
self.set_addr(value)
self.update_qr()
matrix = self.qr.get_matrix()
k = len(matrix)
self._create_texture(k)
cr, cg, cb, ca = self.background_color[:]
cr, cg, cb = 255, 255, 255
###used bytearray for python 3.5 eliminates need for btext
buff = bytearray()
for r in range(k):
for c in range(k):
buff.extend([0, 0, 0] if matrix[r][c] else [cr, cg, cb])
def set_addr(self, addr):
if self.addr == addr:
return
MinSize = 210 if len(addr) < 128 else 500
self.setMinimumSize((MinSize, MinSize))
self.addr = addr
self.qr = None
# then blit the buffer
# join not neccesarry when using a byte array
# buff =''.join(map(chr, buff))
# update texture in UI thread.
self._upd_texture(buff)
def update_qr(self):
if not self.addr and self.qr:
return
QRCode = qrcode.QRCode
L = qrcode.constants.ERROR_CORRECT_L
addr = self.addr
try:
self.qr = qr = QRCode(
version=None,
error_correction=L,
box_size=10,
border=0,
)
qr.add_data(addr)
qr.make(fit=True)
except Exception as e:
print(e)
self.qr=None
self.update_texture()
def setMinimumSize(self, size):
# currently unused, do we need this?
self._texture_size = size
def _create_texture(self, k, dt):
self._qrtexture = texture = Texture.create(size=(k,k), colorfmt='rgb')
# don't interpolate texture
texture.min_filter = 'nearest'
texture.mag_filter = 'nearest'
def update_texture(self):
if not self.addr:
return
matrix = self.qr.get_matrix()
k = len(matrix)
# create the texture in main UI thread otherwise
# this will lead to memory corruption
Clock.schedule_once(partial(self._create_texture, k), -1)
cr, cg, cb, ca = self.background_color[:]
cr, cg, cb = 255, 255, 255
###used bytearray for python 3.5 eliminates need for btext
buff = bytearray()
for r in range(k):
for c in range(k):
buff.extend([0, 0, 0] if matrix[r][c] else [cr, cg, cb])
# then blit the buffer
# join not neccesarry when using a byte array
# buff =''.join(map(chr, buff))
# update texture in UI thread.
Clock.schedule_once(lambda dt: self._upd_texture(buff))
def _upd_texture(self, buff):
texture = self._qrtexture
if not texture:
# if texture hasn't yet been created delay the texture updation
Clock.schedule_once(lambda dt: self._upd_texture(buff))
return
texture.blit_buffer(buff, colorfmt='rgb', bufferfmt='ubyte')
texture.flip_vertical()
img = self.ids.qrimage
img.anim_delay = -1
img.texture = texture
img.canvas.ask_update()
def _upd_texture(self, buff):
texture = self._qrtexture
if not texture:
# if texture hasn't yet been created delay the texture updation
Clock.schedule_once(lambda dt: self._upd_texture(buff))
return
texture.blit_buffer(buff, colorfmt='rgb', bufferfmt='ubyte')
texture.flip_vertical()
img = self.qrimage
img.anim_delay = -1
img.texture = texture
img.canvas.ask_update()
Factory.register('QRCodeWidget',QRCodeWidget)
if __name__ == '__main__':
from kivy.app import runTouchApp
import sys
data = str(sys.argv[1:])
runTouchApp(QRCodeWidget(data=data))
from kivy.app import runTouchApp
import sys
data = str(sys.argv[1:])
data = """{
"host":"122.22.22.33",
"port":12345
}"""
runTouchApp(Factory.QRCodeWidget(data=data))

View File

@ -250,15 +250,16 @@ class OSC_VPlayer(BaseVPlayer):
self.map('/next',self.next)
self.map('/previous',self.previous)
t = threading.Thread(target=self.server.serve_forever)
t.daemon_threads = True
t.start()
self.fullscreen = True
label = Label(text='%s %d' % (self.ip,self.port), font_size=CSize(2))
label.x = self.width - label.width, 0
label.y = 0
self.add_widget(label)
def osc_server_quit(self):
self.server.shutdown()
self.server.server_close()
def __del__(self):
self.server.server_close()
print("*******************VPlayer deleted**********")
self.quit()
def map(self,p,f):
self.dispatcher.map(p,f,None)