from?kivy.uix.image?import?Image
Image(source="x.jpg").texture.pixels==open("x.jpg","rb").read()获得一个图片的二进制数据
kv语言模板
https://my.oschina.net/olddragon/blog/791374kivy做的本地聊天软件
https://github测试数据/yingshaoxo/kivy-chatkv屏幕切换
from?kivy.app?import?Appfrom?kivy.lang?import?Builderfrom?kivy.uix.screenmanager?import?ScreenManager,?Screen,?FadeTransitionclass?MainScreen(Screen):
????passclass?AnotherScreen(Screen):
????passclass?ScreenManagement(ScreenManager):
????passpresentation?=?Builder.load_file("main.kv")class?MainApp(App):
????def?build(self):
????????return?presentationif?__name__?==?'__main__':
????MainApp().run()#:kivy?1.8.0#:import?FadeTransition?kivy.uix.screenmanager.FadeTransitionScreenManagement: ????transition:?FadeTransition() ????MainScreen: ????AnotherScreen:<MainScreen>: ????name:?'main' ????Button: ????????on_release:?app.root.current?=?'other' ????????text:?'Another?Screen' ????????font_size:?50<AnotherScreen>: ????name:?'other' ????Button: ????????on_release:?app.root.current?=?'main' ????????text:?'back?to?the?home?screen' ????????font_size:?50
原址：https://pythonprogramming.net/kivy-screen-manager-tutorial/
给layout加图片
<MainScreen>: ????name:?'main' ????Button: ????????on_release:?app.root.current?=?'other' ????????text:?'hello?world' ????????font_size:?50 ????AsyncImage: ????????source:?'/home/chenyang/PycharmProjects/show_face_decetor/logo.jpg'
从matpoltlib中拿出图片
https://blog.csdn.net/C_chuxin/article/details/84000438import?matplotlib.pyplot?as?plt?
import?numpy?as?np?
import?io?
from?PIL?import?Image?
import?cv2?
?
?
#使用plt进行画图
?img?=?Image.open('00.jpg')?#读取图片像素为512X512
?fig=plt.figure("Image",frameon=False)??#?图像窗口名称
?plt.imshow(img)
?canvas?=?fig.canvas?
?
?
#?去掉图片四周的空白
?plt.axis('off')?#?关掉坐标轴为?off
?#设置画布大小（单位为英寸），每1英寸有100个像素
?fig.set_size_inches(512/100,512/100)
?plt.gca().xaxis.set_major_locator(plt.NullLocator())??#?plt.gca()表示获取当前子图"Get?Current?Axes"。
?plt.gca().yaxis.set_major_locator(plt.NullLocator())
?plt.subplots_adjust(top=1,?bottom=0,?left=0,?right=1,?hspace=0,?wspace=0)
?plt.margins(0,?0)
?
?
?#第一种保存方式（直接对plt?进行保存）
?plt.savefig('01.jpg',dpi=100)
?
?
?#?第二种保存方式（获取Plt的数据并使用cv2进行保存）
?buffer?=?io.BytesIO()??#?获取输入输出流对象
?canvas.print_png(buffer)??#?将画布上的内容打印到输入输出流对象
?data?=?buffer.getvalue()??#?获取流的值
?print("plt的二进制流为:\n",data)
?buffer.write(data)??#?将数据写入buffer
?img?=?Image.open(buffer)??#?使用Image打开图片数据
?img?=?np.asarray(img)
?print("转换的图片array的尺寸为:\n",img.shape)
?print("转换的图片array为:\n",img)
?cv2.imwrite("02.jpg",?img)
?buffer.close()?#?将Texture格式的图片对象转换为numpy ????def?texture_to_numpy(self,data): ????????image=numpy.asarray(bytearray(data.pixels),?dtype='uint8').reshape((data.height,data.width,4)) ????????r_chanel=numpy.copy(image[:,:,0]) ????????g_chanel=numpy.copy(image[:,:,1]) ????????b_chanel=numpy.copy(image[:,:,2]) ????????image[:,?:,?0]=b_chanel ????????image[:,?:,?1]=g_chanel ????????image[:,?:,?2]=r_chanel
#?将numpy格式图片对象转为Texture?
????def?numpy_to_texture(self,frame):
????????#?frame=cv2.imread("ddd.jpg")
????????buf1?=?cv2.flip(frame,?0)
????????buf?=?buf1.tostring()
????????image_texture?=?Texture.create(size=(frame.shape[1],?frame.shape[0]),?colorfmt='bgr')
????????image_texture.blit_buffer(buf,?colorfmt='bgr',?bufferfmt='ubyte')class?ImageToImage:
????def?pie_plt(self):
????????#?-*-?coding:?utf-8?-*
????????from?matplotlib.font_manager?import?FontManager,?FontProperties????????import?matplotlib?as?mpl????????import?matplotlib.pyplot?as?plt????????#?使用Mac系统自带的中问字体
????????def?getChineseFont():
????????????return?FontProperties(fname='/System/Library/Fonts/STHeiti?Medium.ttc')
????????#?设置图片大小
????????#?plt.figure(figsize=(9,6))
????????label?=?u'超载',?u'船员责任心不强',?u'船员驾驶技术太差',?u'通航环境差',?u'海事、港航监管不到位',?u'船舶过于老旧',?u'冒险航行'??#?各类别标签
????????color?=?'red',?'orange',?'yellow',?'green',?'blue',?'gray',?'goldenrod'??#?各类别颜色
????????size?=?[34,?5,?6,?14,?1,?10,?23]??#?各类别占比
????????explode?=?(0.2,?0,?0,?0,?0,?0,?0)??#?各类别的偏移半径
????????#?plt.subplot(2,3,1)
????????#?绘制饼状图
????????pie?=?plt.pie(size,?colors=color,?explode=explode,?labels=label,?shadow=True,?autopct='%1.1f%%')
????????#?饼状图呈正圆
????????for?font?in?pie[1]:
????????????font.set_fontproperties(mpl.font_manager.FontProperties(
????????????????fname='/System/Library/Fonts/STHeiti?Light.ttc'))
????????????font.set_size(8)
????????for?digit?in?pie[2]:
????????????digit.set_size(8)
????????plt.axis('equal')
????????plt.title(u'你认为砂石船发生事故的主要原因在于',?fontproperties=getChineseFont(),?fontsize=12)
????????plt.legend(prop=getChineseFont(),?loc=0,?bbox_to_anchor=(0.82,?1))??#?图例
????????#?设置legend的字体大小
????????leg?=?plt.gca().get_legend()
????????ltext?=?leg.get_texts()
????????plt.setp(ltext,?fontsize=6)
????????#?显示图
????????plt.show()
????def?plt_image(self,num_list,imagename):
????????fig?=?plt.figure(imagename,?frameon=False,figsize=(5.2,2.7))#?图像窗口名称
????????self.canvas?=?fig.canvas
????????name_list?=?['Surprise',?"Fear",?"Disgust",?"Happy",?"Sad",?"Anger",?"Nature"]
????????#?num_list?=?[round(random.random()?*?100,?2),?round(random.random()?*?100,?2),?round(random.random()?*?100,?2),
????????#?????????????round(random.random()?*?100,?2),?round(random.random()?*?100,?2),?round(random.random()?*?100,?2),
????????#?????????????round(random.random()?*?100,?2)]
????????rects?=?plt.bar(range(len(num_list)),?num_list,?color='rgbyrgb')
????????index?=?[0,?1,?2,?3,?4,?5,?6]
????????index?=?[float(c)?for?c?in?index]
????????plt.ylim(ymax=110,?ymin=0)
????????plt.xticks(index,?name_list)
????????plt.ylabel("arrucay(%)")?#?X轴标签
????????ax?=?plt.gca()
????????ax.spines['top'].set_color('none')
????????ax.spines['right'].set_color('none')
????????for?rect?in?rects:
????????????height?=?round(rect.get_height(),2)
????????????if?height<1:
????????????????plt.text(rect.get_x()?+?rect.get_width()?/?2,?height,'?',?ha='center',?va='bottom')
????????????else:
????????????????plt.text(rect.get_x()?+?rect.get_width()?/?2,?height,?str(height)?+?'%',?ha='center',?va='bottom')
????????#?plt.cla()
????????plt.close("all")拍照截屏 https://stackoverflow测试数据/questions/54551968/python-kivy-camera-and-changing-screen https://stackoverflow测试数据/questions/35718277/kivycameraubuntu-error-with-v4l2src Kivy?从memory?读取image https://HdhCmsTestcnblogs测试数据/jeroen/p/9236549.html kivy?基础：?widget，?texture的使用 https://HdhCmsTestjianshu测试数据/p/e0be47e27b30
#采取全局变量传递当前layout控制布局current_layout=[]#?被重构的Camera类class?Puzzle(Camera):
????#写一个方法设置布局对象到这个类的变量中
????def?on_texture_size(self,?instance,?value):
????????self.dector_expression?=?Dector_Expression()
????????self.new_build()
????def?on_blocksize(self,?instance,?value):
????????self.new_build()
????#?基础build
????def?build(self):
????????self.clear_widgets()
????????texture?=?self.texture
????????subtexture?=?texture
????????node?=?Scatter(pos=(320,?240),?size=(640,?480))
????????with?node.canvas:
????????????Color(1,?1,?1)
????????????Rectangle(size=node.size,?texture=subtexture)
????????self.add_widget(node)
????#?重构build
????def?new_build(self):
????????self.clear_widgets()
????????texture?=?self.texture
????????subtexture?=?texture
????????node?=?Scatter(?size=(640,?480),?size_hint=(0.5?,0.5)
????????,pos_hint={'center_x':0.5,?'center_y':0.5})
????????with?node.canvas:
????????????Color(1,?1,?1)
????????????Rectangle(size=node.size,?texture=subtexture)
????????print(current_layout)
????????current_layout[0].add_widget(node)#通过button传递当前layout对象到.py文件中Button: ????????????????on_release:app.root.clock_image(self) ????????????????text:'打开摄像头' ????????????????font_size:?50
#class?ScreenManagement(ScreenManager): def?clock_image(self,?app): #传递layout到变量中 ????????current_layout.append(app.parent.parent.children[2]) ????????puzzle?=?Puzzle(resolution=(40,?80),?play=True) ????????app.parent.parent.children[1].add_widget(puzzle) ????????#将相机layout对象传递出去 ????????self.camera_layout?=?app.parent.parent.parent.children[1].children[0]
#?自定义buttonclass?ImageButton(ButtonBehavior,FloatLayout,?Image):
????def?on_press(self):
????????print?('pressed')#自定义button的使用ImageButton: ????????????????on_release:?app.root.login(self) ????????????????text:?'登录' ????????????????font_size:?50 ????????????????source:?'./logo5.png'
#相机贴图def?new_build(self,?*kwargs): ????self.clear_widgets() ????node?=?ImageButton(source='imagecamera.png',?size=self.size,?pos=self.pos) ????self.add_widget(node)
?def?cam(self,?*kwargs): ????????Flag_list[0].clear_widgets() ????????node?=?ImageButton(source='imagecamera.png',?size=self.size,?pos=self.pos) ????????node1?=?ImageButton(source='test.png',?size=self.size,?pos=self.pos) ????????if?random.randrange(2)?==?0: ????????????Flag_list[0].add_widget(node) ????????else: ????????????Flag_list[0].add_widget(node1)
camera?=?self.camera_layout par=camera.parent Flag_list.append(par)Clock.schedule_interval(self.cam,?1.0?/?5)
#?将numpy转为texture ????def?numpy_to_texture(self,?frame,?colorfmt='bgr'): ????????buf1?=?cv2.flip(frame,?0) ????????buf?=?buf1.tostring() ????????image_texture?=?Texture.create(size=(frame.shape[1],?frame.shape[0]),?colorfmt=colorfmt) ????????image_texture.blit_buffer(buf,?colorfmt=colorfmt,?bufferfmt='ubyte') ????????return?image_texture????def?cam(self,*kwargs): ????????ret,frame=Flag_list[1].read() ????????if?ret: ????????????node1=self.numpy_to_texture(frame) ????????else: ????????????return ????????Flag_list[0].clear_widgets() ????????node?=?Scatter(pos=Flag_list[0].pos,?size=Flag_list[0].size) ????????with?node.canvas: ????????????Rectangle(size=node.size,?texture=node1) ????????Flag_list[0].add_widget(node) ????def?coustom_camera(self,par): ????????Flag_list.append(par.parent.parent.parent.children[1]) ????????#?开始的时候要加一个图片 ????????node?=?ImageButton(source='imagecamera.png',?size=self.size,?pos=self.pos) ????????Flag_list[0].add_widget(node) ????????cap?=?cv2.VideoCapture(0) ????????Flag_list.append(cap) ????????Clock.schedule_interval(self.cam,?1.0?/?5)
自定义字体import?numpy?as?npimport?pylab?as?plimport?matplotlib.font_manager?as?fm
myfont?=?fm.FontProperties(fname=r'D:\Fonts\simkai.ttf')?#?设置字体t?=?np.arange(0.0,2.0?*?np.pi,0.01)?#?自变量取值范围s?=?np.sin(t)?#?计算正弦函数值z?=?np.cos(t)?#?计算余弦函数值pl.plot(t,s,label='正弦')pl.plot(t,z,label='余弦')pl.xlabel('x-变量',fontproperties=myfont,fontsize=24)?#设置标签pl.ylabel('y-正弦余弦函数值',fontproperties=myfont,fontsize=24)pl.title('sin-cos函数图像',fontproperties=myfont,fontsize=32)?#图像标题pl.legend(prop=myfont)pl.show()滚动效果
from?kivy.uix.gridlayout?import?GridLayoutfrom?kivy.uix.button?import?Buttonfrom?kivy.uix.scrollview?import?ScrollViewfrom?kivy.core.window?import?Windowfrom?kivy.app?import?runTouchAppclass?ScrollView_layout():
????def?myself_scrollview(self):
????????layout?=?GridLayout(cols=1,?spacing=10,?size_hint_y=None)
????????#?Make?sure?the?height?is?such?that?there?is?something?to?scroll.
????????layout.bind(minimum_height=layout.setter('height'))
????????for?i?in?range(100):
????????????btn?=?Button(text=str(i),?size_hint_y=None,?height=40)
????????????layout.add_widget(btn)
????????root?=?ScrollView(do_scroll_x=False,do_scroll_y=True,size_hint=(1,?None),?size=(Window.width,?Window.height))
????????root.add_widget(layout)
????????return?rootif?__name__?==?'__main__':
????runTouchApp(ScrollView_layout().myself_scrollview())下拉列表数字版本
class?DropDownCoustomNum(): ????dropdown?=?DropDown() ????@classmethod ????def?build_10_button(cls,button_num): ????????for?index?in?range(button_num): ????????????#?When?adding?widgets,?we?need?to?specify?the?height?manually ????????????#?(disabling?the?size_hint_y)?so?the?dropdown?can?calculate ????????????#?the?area?it?needs. ????????????btn?=?Button(text='%d'?%?index,?size_hint_y=None,?height=44) ????????????#?for?each?button,?attach?a?callback?that?will?call?the?select()?method ????????????#?on?the?dropdown.?We'll?pass?the?text?of?the?button?as?the?data?of?the ????????????#?selection. ????????????btn.bind(on_release=lambda?btn:cls.dropdown.select(btn.text)) ????????????#?then?add?the?button?inside?the?dropdown ????????????cls.dropdown.add_widget(btn) ????@classmethod ????def?build_select_button(cls,button_num): ????????cls.build_10_button(button_num) ????????#?create?a?big?main?button ????????mainbutton?=?Button(text='Hello',?size_hint=(None,?None)) ????????#?show?the?dropdown?menu?when?the?main?button?is?released ????????#?note:?all?the?bind()?calls?pass?the?instance?of?the?caller?(here,?the ????????#?mainbutton?instance)?as?the?first?argument?of?the?callback?(here, ????????#?dropdown.open.). ????????mainbutton.bind(on_release=cls.dropdown.open) ????????#?one?last?thing,?listen?for?the?selection?in?the?dropdown?list?and ????????#?assign?the?data?to?the?button?text. ????????cls.dropdown.bind(on_select=lambda?instance,?x:?setattr(mainbutton,?'text',?x)) ????????return?mainbutton
下拉列表字符列表版本
class?DropDownCoustomStrList(): ????dropdown?=?DropDown() ????@classmethod ????def?build_10_button(cls,button_num): ????????for?index?in?button_num: ????????????#?When?adding?widgets,?we?need?to?specify?the?height?manually ????????????#?(disabling?the?size_hint_y)?so?the?dropdown?can?calculate ????????????#?the?area?it?needs. ????????????btn?=?Button(text='%s'?%?index,?size_hint_y=None,?height=44) ????????????#?for?each?button,?attach?a?callback?that?will?call?the?select()?method ????????????#?on?the?dropdown.?We'll?pass?the?text?of?the?button?as?the?data?of?the ????????????#?selection. ????????????btn.bind(on_release=lambda?btn:cls.dropdown.select(btn.text)) ????????????#?then?add?the?button?inside?the?dropdown ????????????cls.dropdown.add_widget(btn) ????@classmethod ????def?build_select_button(cls,button_num): ????????cls.build_10_button(button_num) ????????#?create?a?big?main?button ????????mainbutton?=?Button(text='Hello',?size_hint=(None,?None)) ????????#?show?the?dropdown?menu?when?the?main?button?is?released ????????#?note:?all?the?bind()?calls?pass?the?instance?of?the?caller?(here,?the ????????#?mainbutton?instance)?as?the?first?argument?of?the?callback?(here, ????????#?dropdown.open.). ????????mainbutton.bind(on_release=cls.dropdown.open) ????????#?one?last?thing,?listen?for?the?selection?in?the?dropdown?list?and ????????#?assign?the?data?to?the?button?text. ????????cls.dropdown.bind(on_select=lambda?instance,?x:?setattr(mainbutton,?'text',?x)) ????????return?mainbutton
多选框
from?kivy.app?import?Appfrom?kivy.lang?import?Builderfrom?kivy.uix.recycleview?import?RecycleViewfrom?kivy.uix.recycleview.views?import?RecycleDataViewBehaviorfrom?kivy.uix.label?import?Labelfrom?kivy.properties?import?BooleanPropertyfrom?kivy.uix.recycleboxlayout?import?RecycleBoxLayoutfrom?kivy.uix.behaviors?import?FocusBehaviorfrom?kivy.uix.recycleview.layout?import?LayoutSelectionBehavior
Builder.load_string(''':
????#?Draw?a?background?to?indicate?selection
????canvas.before:
????????Color:
????????????rgba:?(.0,?0.9,?.1,?.3)?if?self.selected?else?(0,?0,?0,?1)
????????Rectangle:
????????????pos:?self.pos
????????????size:?self.size:
????viewclass:?'SelectableLabel'
????SelectableRecycleBoxLayout:
????????default_size:?None,?dp(56)
????????default_size_hint:?1,?None
????????size_hint_y:?None
????????height:?self.minimum_height
????????orientation:?'vertical'
????????multiselect:?True
????????touch_multiselect:?True
''')class?SelectableRecycleBoxLayout(FocusBehavior,?LayoutSelectionBehavior,
?????????????????????????????????RecycleBoxLayout):
????'''?Adds?selection?and?focus?behaviour?to?the?view.?'''class?SelectableLabel(RecycleDataViewBehavior,?Label):
????'''?Add?selection?support?to?the?Label?'''
????index?=?None
????selected?=?BooleanProperty(False)
????selectable?=?BooleanProperty(True)
????def?refresh_view_attrs(self,?rv,?index,?data):
????????'''?Catch?and?handle?the?view?changes?'''
????????self.index?=?index????????return?super(SelectableLabel,?self).refresh_view_attrs(
????????????rv,?index,?data)
????def?on_touch_down(self,?touch):
????????'''?Add?selection?on?touch?down?'''
????????if?super(SelectableLabel,?self).on_touch_down(touch):
????????????return?True
????????if?self.collide_point(*touch.pos)?and?self.selectable:
????????????return?self.parent.select_with_touch(self.index,?touch)
????def?apply_selection(self,?rv,?index,?is_selected):
????????'''?Respond?to?the?selection?of?items?in?the?view.?'''
????????self.selected?=?is_selected????????if?is_selected:
????????????print("selection?changed?to?{0}".format(rv.data[index]))
????????else:
????????????print("selection?removed?for?{0}".format(rv.data[index]))class?RV(RecycleView):
????def?__init__(self,?**kwargs):
????????super(RV,?self).__init__(**kwargs)
????????self.data?=?[{'text':?str(x)}?for?x?in?range(100)]class?TestApp(App):
????def?build(self):
????????return?RV()if?__name__?==?'__main__':
????TestApp().run()tree样式
from?kivy.uix.floatlayout?import?FloatLayoutfrom?kivy.uix.treeview?import?TreeView,?TreeViewLabelfrom?kivy.app?import?runTouchAppdef?populate_tree_view(tree_view,?parent,?node):
????if?parent?is?None:
????????tree_node?=?tree_view.add_node(TreeViewLabel(text=node['node_id'],
?????????????????????????????????????????????????????is_open=True))
????else:
????????tree_node?=?tree_view.add_node(TreeViewLabel(text=node['node_id'],
?????????????????????????????????????????????????????is_open=True),?parent)
????for?child_node?in?node['children']:
????????populate_tree_view(tree_view,?tree_node,?child_node)tree?=?{'node_id':?'1',
????????'children':?[{'node_id':?'1.1',
??????????????????????'children':?[{'node_id':?'1.1.1',
????????????????????????????????????'children':?[{'node_id':?'1.1.1.1',
??????????????????????????????????????????????????'children':?[]}]},
???????????????????????????????????{'node_id':?'1.1.2',
????????????????????????????????????'children':?[]},
???????????????????????????????????{'node_id':?'1.1.3',
????????????????????????????????????'children':?[]}]},
??????????????????????{'node_id':?'1.2',
???????????????????????'children':?[]}]}class?TreeWidget(FloatLayout):
????def?__init__(self,?**kwargs):
????????super(TreeWidget,?self).__init__(**kwargs)
????????tv?=?TreeView(root_options=dict(text='Tree?One'),
??????????????????????hide_root=False,
??????????????????????indent_level=4)
????????populate_tree_view(tv,?None,?tree)
????????self.add_widget(tv)if?__name__?==?'__main__':
????runTouchApp(TreeWidget())选项卡
'''
TabbedPanel
============
Test?of?the?widget?TabbedPanel.
'''from?kivy.app?import?Appfrom?kivy.uix.tabbedpanel?import?TabbedPanelfrom?kivy.lang?import?Builder
Builder.load_string(""":
????size_hint:?.5,?.5
????pos_hint:?{'center_x':?.5,?'center_y':?.5}
????do_default_tab:?False
????TabbedPanelItem:
????????text:?'first?tab'
????????Label:
????????????text:?'First?tab?content?area'
????TabbedPanelItem:
????????text:?'tab2'
????????BoxLayout:
????????????Label:
????????????????text:?'Second?tab?content?area'
????????????Button:
????????????????text:?'Button?that?does?nothing'
????TabbedPanelItem:
????????text:?'tab3'
????????RstDocument:
????????????text:
????????????????'\\n'.join(("Hello?world",?"-----------",
????????????????"You?are?in?the?third?tab."))
""")class?Test(TabbedPanel):
????passclass?TabbedPanelApp(App):
????def?build(self):
????????return?Test()if?__name__?==?'__main__':
????TabbedPanelApp().run()新版本自定相机 使用的时候一定要注意把所有方法和__init__ 放到你要使用的类中
class?CustomCamera():
????def?__init__(self):
????????self.Flag_list?=?[0,?1]
????????self.image_from_camera?=?[]
????????self.camera_flog?=?[False]
????????self.detail_flog?=?[False]
????#?将numpy转为texture
????def?numpy_to_texture(self,?frame,?colorfmt='bgr'):
????????buf1?=?cv2.flip(frame,?0)
????????buf?=?buf1.tostring()
????????image_texture?=?Texture.create(size=(frame.shape[1],?frame.shape[0]),?colorfmt=colorfmt)
????????image_texture.blit_buffer(buf,?colorfmt=colorfmt,?bufferfmt='ubyte')
????????return?image_texture????def?cam(self,?*kwargs):
????????ret,?frame?=?self.Flag_list[0].read()
????????if?ret:
????????????node1?=?self.numpy_to_texture(frame[:,?::-1,?:])
????????????self.image_from_camera.append(node1)
????????????self.camera_to_page()
????#?这就是动态显示的模板
????def?camera_to_page(self):
????????#?显示相机到页面
????????if?len(self.image_from_camera)?>=1:
????????????print("的点点滴滴多多多多多多多多多多")
????????????node1?=?self.image_from_camera.pop(0)
????????????self.Flag_list[1].clear_widgets()
????????????if?self.camera_flog:
????????????????node?=?Scatter(pos=self.Flag_list[1].pos,?size=self.Flag_list[1].size)
????????????????with?node.canvas:
????????????????????Rectangle(size=node.size,?texture=node1)
????????????????self.Flag_list[1].add_widget(node)
????????????????#?self.Flag_list[0].add_widget(node2)
????#?自定义相机
????def?coustom_camera(self,?par):
????????self.Flag_list[1]?=?par
????????self.camera_flog[0]?=?not?self.camera_flog[0]
????????if?not?self.camera_flog[0]:
????????????self.Flag_list[0].release()
????????????self.image_from_camera?=?[]
????????????print("tun?off")
????????try:
????????????cap?=?cv2.VideoCapture(0)
????????except:
????????????cap?=?cv2.VideoCapture(1)
????????self.Flag_list[0]?=?cap????????if?not?self.camera_flog[0]:
????????????cap.release()
????????????Clock.unschedule(self.cam)
????????else:
????????????Clock.schedule_interval(self.cam,?1.0?/?20)使用这样的方式调用可以实现人脸识别特效 './face_boder.png’前提是该图有一定的部分是透明的
GridLayout: ????????????????????????size_hint_y:?None ????????????????????????height:300 ????????????????????????size_hint_x:?None ????????????????????????width:300 ????????????????????????cols:1 ????????????????????????AnchorLayout: ????????????????????????????Button: ????????????????????????????????on_release:app.root.FaceLoginScreen_index.coustom_camera(self) ????????????????????????????Image: ????????????????????????????????source:?'./face_boder.png' ????????????????????????????????size:?self.texture_size
? ? ? ? ? ? ? ?
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