Explore Public Snippets

from kivy.app import App
 from kivy.uix.widget import Widget
 from kivy.uix.button import Button
 from kivy.uix.boxlayout import BoxLayout
 from kivy.properties import ListProperty

 class RootWidget(BoxLayout):

     def __init__(self, **kwargs):
         super(RootWidget, self).__init__(**kwargs)
         self.add_widget(Button(text='btn 1'))
         cb = CustomBtn()
         cb.bind(pressed=self.btn_pressed)
         self.add_widget(cb)
         self.add_widget(Button(text='btn 2'))

     def btn_pressed(self, instance, pos):
         print ('pos: printed from root widget: {pos}'.format(pos=pos))

 class CustomBtn(Widget):

     pressed = ListProperty([0, 0])

     def on_touch_down(self, touch):
         if self.collide_point(*touch.pos):
             self.pressed = touch.pos
             # we consumed the touch. return False here to propagate
             # the touch further to the children.
             return True
         return super(CustomBtn, self).on_touch_down(touch)

     def on_pressed(self, instance, pos):
         print ('pressed at {pos}'.format(pos=pos))

 class TestApp(App):

     def build(self):
         return RootWidget()


 if __name__ == '__main__':
     TestApp().run()

# -*- coding: utf8 -*-

from kivy.app import App
from kivy.uix.floatlayout import FloatLayout
from kivy.graphics import Line
from kivy.uix.label import Label
from kivy.core.window import Window
from kivy.clock import Clock

import serial

# Basic class Float Layout
class Test1(FloatLayout):

    def __init__(self, **kwargs):
        super(Test1, self).__init__(**kwargs)

        # Set the timer for redrawing the screen
        refresh_time = 0.5
        Clock.schedule_interval(self.timer, refresh_time)

        with self.canvas:
             self.centered_circle = Line(circle = (self.center_x, self.center_y, 50), width = 2)

    def timer(self, dt):
        # Get data from serial port
        value = arduino.readline()

        # Draw the circle according to the data
        self.centered_circle.circle = (self.center_x, self.center_y,value)

        # More about drawing in Kivy here: http://kivy.org/docs/api-kivy.graphics.html


# Main App class
class SerialDataApp(App):
    def build(self):
        return Test1()

# Main program
if __name__ == '__main__':
    # Connect to serial port first
    try:
        arduino = serial.Serial('/dev/tty.usbmodem1421', 9600)
    except:
        print "Failed to connect"
        exit()

    # Launch the app
    SerialDataApp().run()

    # Close serial communication
    arduino.close()

#!/usr/bin/env python

package_name = 'mypkg'
package_version = '1.0'

import fnmatch, os, sys

# -----------------------------------------------------------------------------
# Determine on which platform we are

platform = sys.platform

# Detect Python for android project (http://github.com/kivy/python-for-android)
ndkplatform = os.environ.get('NDKPLATFORM')
if ndkplatform is not None and os.environ.get('LIBLINK'):
    platform = 'android'
kivy_ios_root = os.environ.get('KIVYIOSROOT', None)
if kivy_ios_root is not None:
    platform = 'ios'
if os.path.exists('/opt/vc/include/bcm_host.h'):
    platform = 'rpi'

# -----------------------------------------------------------------------------
# Cython check
# on python-for-android and kivy-ios, cython usage is external
have_cython = False
if platform in ('ios', 'android'):
    print('\nCython check avoided.')
else:
    try:
        # check for cython
        from Cython.Distutils import build_ext
        have_cython = True
    except ImportError:
        print('\nCython is missing, it is required for compiling!\n\n')
        raise

if not have_cython:
    from distutils.core import setup
    from distutils.extension import Extension
    from distutils.command.build_ext import build_ext
else:
    from setuptools import setup, Extension

# copied from setuptools
from distutils.util import convert_path
def find_packages(where='.', exclude=()):
    """Return a list all Python packages found within directory 'where'

    'where' should be supplied as a "cross-platform" (i.e. URL-style) path; it
    will be converted to the appropriate local path syntax.  'exclude' is a
    sequence of package names to exclude; '*' can be used as a wildcard in the
    names, such that 'foo.*' will exclude all subpackages of 'foo' (but not
    'foo' itself).
    """
    out = []
    stack=[(convert_path(where), '')]
    while stack:
        where,prefix = stack.pop(0)
        for name in os.listdir(where):
            fn = os.path.join(where,name)
            if ('.' not in name and os.path.isdir(fn) and
                os.path.isfile(os.path.join(fn,'__init__.py'))
            ):
                out.append(prefix+name); stack.append((fn,prefix+name+'.'))
    for pat in list(exclude)+['ez_setup', 'distribute_setup']:
        from fnmatch import fnmatchcase
        out = [item for item in out if not fnmatchcase(item,pat)]
    return out

# copied from kivy
class CythonExtension(Extension):
    def __init__(self, *args, **kwargs):
        Extension.__init__(self, *args, **kwargs)
        self.cython_directives = {
            'c_string_encoding': 'utf-8',
            'profile': 'USE_PROFILE' in os.environ,
            'embedsignature': 'USE_EMBEDSIGNATURE' in os.environ}
        # XXX with pip, setuptools is imported before distutils, and change
        # our pyx to c, then, cythonize doesn't happen. So force again our
        # sources
        self.sources = args[1]

packages = [pkg for pkg in find_packages('.') if pkg.startswith(package_name)]

def make_cy_ext(filename):
    modname = filename.replace('.pyx', '').replace('/', '.')
    srcname = filename if have_cython else (filename[:-4] + '.c')
    return CythonExtension(modname, [srcname])

def find_cy_ext(path):
    ext = []
    for root, dirnames, filenames in os.walk(path):
        for filename in fnmatch.filter(filenames, '*.pyx'):
            ext.append(make_cy_ext(os.path.join(root, filename)))
    return ext

cython_ext = find_cy_ext(package_name)

setup_opts = {
    'name': package_name,
    'version': package_version,
    'packages': packages,
    'cmdclass': {
        'build_ext': build_ext,
    },
    'ext_modules': cython_ext,
}

setup(**setup_opts)

from kivy.app import App
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.textinput import TextInput
from kivy.uix.widget import Widget
from kivy.properties import StringProperty,ObjectProperty
from kivy.core.window import Window, Keyboard

class textInsert(FloatLayout):
   def __init__(self, **kwargs):
      super(textInsert, self).__init__(**kwargs)
      
      text = StringProperty()
      
      self.custom_insteresting_keys=["s","y","q","w"] ## replace with dic later
      
      ########################################
      keyboard = Window.request_keyboard(self._keyboard_released, self)
      self._keyboard = keyboard
      keyboard.bind(on_key_down=self._keyboard_on_key_down)
      ########################################
      
      self.textin=TextInput(
         size_hint_x=None,
         size_hint_y=None,
         height=30,
         width=120,
         multiline=False
      )
      
      self.textin.bind(text=self.onText)
      self.add_widget(self.textin)
   #end def __init__
   
   def _keyboard_released(self):
      self.focus = False
   #end def _keyboard_released
   
   def _keyboard_on_key_down(self, window, keycode, text, modifiers):
      is_shortcut = (modifiers == ['ctrl'])
      
      print('keycode[1]', keycode[1])
        
      #if keycode[1] in list(self.custom_insteresting_keys) and is_shortcut: 
      if keycode[1] in list(self.custom_insteresting_keys):
         print("CUSTOM SHORT CUT HAS BEEN MET, TEXT SHOULD NOT BE ENTERED INTO TEXTINPUT")
         return True
      else:
         print('returned false')
         return False
      #end if
   #end def _keyboard_on_key_down
   
   def onText(self,instance,value):
      print("ON TEXT", value)
      '''
      #print self.textin._key_down(self)
      if len(value) == 3:
         self.textin.select_text(
            (self.textin.cursor_index()-len(value)),
            self.textin.cursor
         )
         self.textin.delete_selection()'''
   #end def onText
   
class ROOT(App):
   def build(self):
      return textInsert()

if __name__ == '__main__':
   ROOT().run()

I wrote a quadratic equations GUI based script..
I used kivy and python, the formula is also the Almighty formula.. 
I used the floatlayout so that it maintains it's look even on landscape...

here's the code below...

for the. py file.....

#-*-coding:utf8;-*-
#qpy:2
#qpy:kivy

from math import sqrt 
from kivy.app import App
from kivy.uix.floatlayout import FloatLayout 
from kivy.lang import Builder 


class for_quadratic(FloatLayout):
    def solve_solution(self):
        self.result_box= self.ids.result_label 
        self.value_a=self.ids.value_one.text 
        self.value_b=self.ids.value_two.text 
        self.value_c=self.ids.value_three.text
        
        if (self.value_a==""):
            self.value_a="1"
        if (self.value_b==""):
            self.value_b="1"
        if (self.value_c==""):
            self.value_c="1"
            
        self.a=int(self.value_a)**2
        self.b=int(self.value_b)
        self.c=int(self.value_c)
    
        self.g=self.b**2
        self.h=4*self.a*self.c
        self.I=abs(self.g-self.h)
        self.k=self.I 
        self.formula= sqrt(self.k)
        self.root_one=(-self.b-self.formula)/2*self.a
        self.root_two=(-self.b+self.formula)/2*self.a
        self.result_box.text=("the roots are \n {} and {}"
        .format(round(self.root_one),round(self.root_two)))




class QuadraticApp(App):
    def build(self):
         return for_quadratic()





QuadraticApp().run()



and for the kv file....



###kivy for quadratuc 

<for_quadratic>:
    FloatLayout:
	    Label:
	        id: main_label
	        text:"QUADRATIC EQUATIONS"
	        size_hint: None,None
	        width: root.width/2
	        height: 45
	        font_size: 30
	        bold: True
	        pos_hint: {"x":.25,"top":1}
	        
	    Label:
	        id: label_one
	        text: "VALUE A"
	        size_hint: None,None
	        width:root.width/2
	        font_size: 20
	        height: 40
	        bold: True
	        pos_hint:{"x":0,"y":.8}
	
	    TextInput:
	        id: value_one
	        hint_text: "type"
	        size_hint: None,None
	        width: root.width/2
	        height: 55
	        font_size: 20
	        bold: True
	        multiline: False 
	        padding: root.height/self.height
	        pos_hint: {"x":.5,"y":.8}
	        
	    Label:
	        id: label_two 
	        text: "VALUE B"
	        size_hint: None,None
	        width:root.width/2
	        font_size: 20
	        height: 40
	        bold: True
	        pos_hint: {"x":0,"y":.7}
	        
	    TextInput:
	        id: value_two 
	        hint_text: "type"
	        size_hint: None,None
	        width: root.width/2
	        height: 55
	        font_size: 20
	        bold: True
	        multiline: False
	        padding: root.height/self.height
	        pos_hint: {"x":.5,"y":.7}
	        
	    Label:
	        id: label_three 
	        text: "VALUE C"
	        size_hint: None,None
	        width:root.width/2
	        font_size: 20
	        height: 40
	        bold: True
	        pos_hint: {"x":0,"y":.6}
	        
	    TextInput:
	        id: value_three 
	        hint_text: "type"
	        size_hint: None,None
	        width: root.width/2
	        height: 55
	        font_size: 20
	        bold: True
	        multiline: False
	        padding: root.height/self.height
	        pos_hint: {"x":.5,"y":.6}
	        
	    Button:
	        id: submit_button 
	        text: "CALCULATE"
	        size_hint: None,None
	        width: root.width/2
	        font_size: 25
	        height: 57
	        italic: True
	        pos_hint: {"x":.5,"y":.5}
	        on_press: root.solve_solution()
	        
	    Label:
	        id: result_label
	        text:"...."
	        size_hint: None,None
	        width: root.width
	        height: 100
	        font_size: 25
	        bold: True
	        pos_hint: {"x":0,"y":.3}
	               
	    Label:
	        text: " by vitriol"
	        size_hint: None,None
	        width: root.width/2
	        font_size: 20
	        color: 0,1,0,1
	        pos_hint: {"x":.25,"y":0}
	               

#p4a is now available on on Pypi, so you can install it using pip:

pip install python-for-android
#You can also test the master branch from Github using:
pip install git+https://github.com/kivy/python-for-android.git

#dependances
sudo dpkg --add-architecture i386
sudo apt-get update
sudo apt-get install -y build-essential ccache git zlib1g-dev python2.7 python2.7-dev libncurses5:i386 libstdc++6:i386 zlib1g:i386 openjdk-7-jdk unzip ant ccache


# apk need for build
sudo pip install buildozer
#Once you have it installed, go to your project directory and type:
buildozer init
# edit the buildozer.spec, then
buildozer android_new debug deploy run
#https://github.com/kivy/buildozer       Generic Python packager for Android and iOS


# more: https://python-for-android.readthedocs.io/en/latest/quickstart/

# source:  kivy-master\kivy\core\window\__init__.py



class Modifier:
	SHIFT = "shift"
	CTRL  = "ctrl"
	ALT   = "alt"
	SUPER = "meta"



class Key:

########################################################################################################################################################################################################################################################################################################~{#
#//////|   System   |///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////g2#
########################################################################################################################################################################################################################################################################################################~}#

	###  Modifiers  ###
	L_ALT   = 308
	R_ALT   = 307
	L_CTRL  = 305
	R_CTRL  = 306
	L_SHIFT = 304
	R_SHIFT = 303
	L_SUPER = 309
	R_SUPER = 1073742055
	MODIFIERS = [L_ALT,R_ALT,L_CTRL,R_CTRL,L_SHIFT,R_SHIFT,L_SUPER, R_SUPER]

	###  Navigation > Primary  ###
	UP       = 273
	DOWN     = 274
	LEFT     = 276
	RIGHT    = 275
	NAVIGATION_PRIMARY = [UP,DOWN,LEFT,RIGHT]

	###  Navigation > Page  ###
	PAGE_UP   = 280
	PAGE_DOWN = 281
	NAVIGATION_PAGE = [PAGE_UP,PAGE_DOWN]

	###  Navigation > Line  ###
	HOME = 278
	END  = 279
	NAVIGATION_LINE = [HOME,END]

	NAVIGATION = NAVIGATION_PRIMARY + NAVIGATION_PAGE + NAVIGATION_LINE

	###  State Toggles  ###
	CAPS_LOCK   = 301
	NUM_LOCK    = 300
	SCREEN_LOCK = 145
	STATE_TOGGLES = [CAPS_LOCK,NUM_LOCK,SCREEN_LOCK]

	###  Commands  ###
	BACKSPACE = 8
	COMPOSE   = 311
	DELETE    = 127
	ENTER     = 13
	ESCAPE    = 27
	INSERT    = 277
	PAUSE     = 19
	PRINT     = 144
	COMMANDS = [BACKSPACE,COMPOSE,DELETE,ENTER,ESCAPE,INSERT,PAUSE,PRINT]

	###  WhiteSpace  ###
	SPACE = 32
	TAB   = 9
	WHITESPACE = [SPACE,TAB]

	###  Unknown  ###
	PIPE = 310

########################################################################################################################################################################################################################################################################################################~{#
#//////|   Letters   |//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////g2#
########################################################################################################################################################################################################################################################################################################~}#

	A = 97
	B = 98
	C = 99
	D = 100
	E = 101
	F = 102
	G = 103
	H = 104
	I = 105
	J = 106
	K = 107
	L = 108
	M = 109
	N = 110
	O = 111
	P = 112
	Q = 113
	R = 114
	S = 115
	T = 116
	U = 117
	V = 118
	W = 119
	X = 120
	Y = 121
	Z = 122
	LETTERS = [A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z]

	###  Accented_Letters  ###
	A_GRAVE = 224  #  À
	E_ACUTE = 233  #  É
	E_GRAVE = 232  #  È
	U_GRAVE = 249  #  Ù
	ACCENTED_LETTERS = [A_GRAVE,E_ACUTE,E_GRAVE,U_GRAVE]

########################################################################################################################################################################################################################################################################################################~{#
#//////|   Numbers   |//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////g2#
########################################################################################################################################################################################################################################################################################################~}#

	NUM_0 = 48
	NUM_1 = 49
	NUM_2 = 50
	NUM_3 = 51
	NUM_4 = 52
	NUM_5 = 53
	NUM_6 = 54
	NUM_7 = 55
	NUM_8 = 56
	NUM_9 = 57
	NUMBERS = [NUM_0,NUM_1,NUM_2,NUM_3,NUM_4,NUM_5,NUM_6,NUM_7,NUM_8,NUM_9]

########################################################################################################################################################################################################################################################################################################~{#
#//////|   Numpad   |///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////g2#
########################################################################################################################################################################################################################################################################################################~}#

	NUMPAD_0 = 256
	NUMPAD_1 = 257
	NUMPAD_2 = 258
	NUMPAD_3 = 259
	NUMPAD_4 = 260
	NUMPAD_5 = 261
	NUMPAD_6 = 262
	NUMPAD_7 = 263
	NUMPAD_8 = 264
	NUMPAD_9 = 265
	NUMPAD_KEYS = [NUMPAD_0,NUMPAD_1,NUMPAD_2,NUMPAD_3,NUMPAD_4,NUMPAD_5,NUMPAD_6,NUMPAD_7,NUMPAD_8,NUMPAD_9]

	NUMPAD_ADD      = 270
	NUMPAD_DECIMAL  = 266
	NUMPAD_DIVIDE   = 267
	NUMPAD_ENTER    = 271
	NUMPAD_MULTIPLY = 268
	NUMPAD_SUBTRACT = 269
	NUMPAD_SYMBOLS = [NUMPAD_ADD,NUMPAD_DECIMAL,NUMPAD_DIVIDE,NUMPAD_ENTER,NUMPAD_MULTIPLY,NUMPAD_SUBTRACT]

########################################################################################################################################################################################################################################################################################################~{#
#//////|   F1 - F15   |/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////g2#
########################################################################################################################################################################################################################################################################################################~}#

	F1  = 282
	F2  = 283
	F3  = 284
	F4  = 285
	F5  = 286
	F6  = 287
	F7  = 288
	F8  = 289
	F9  = 290
	F10 = 291
	F11 = 292
	F12 = 293
	F13 = 294
	F14 = 295
	F15 = 296
	F_KEYS = [F1,F2,F3,F4,F5,F6,F7,F8,F9,F10,F11,F12,F13,F14,F15]

########################################################################################################################################################################################################################################################################################################~{#
#//////|   Symbols   |//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////g2#
########################################################################################################################################################################################################################################################################################################~}#

	###  Brackets  ###
	L_ANGLE   = 60   #  <
	R_ANGLE   = 62   #  >
	L_BRACE   = 123  #  {
	R_BRACE   = 125  #  }
	L_BRACKET = 91   #  [
	R_BRACKET = 93   #  ]
	L_PAREN   = 40   #  (
	R_PAREN   = 41   #  )
	BRACKETS = [L_ANGLE,R_ANGLE,L_BRACE,R_BRACE,L_BRACKET,R_BRACKET,L_PAREN,R_PAREN]

	###  Symbols  ###
	ACUTE_ACCENT = 180   #  ´
	AMPERSAND    = 38    #  &
	ASTERISK     = 42    #  *
	AT           = 64    #  @
	BACKSLASH    = 92    #  \
	BACKTICK     = 96    #  `
	BAR          = 124   #  |
	BROKEN_BAR   = 166   #  ¦
	CARET        = 94    #  ^
	COLON        = 58    #  :
	COMMA        = 44    #  ,
	DASH         = 45    #  -
	DIAERESIS    = 168   #  ¨
	DOLLAR       = 36    #  $
	ELLIPSIS     = 8230  #  …
	EQUALS       = 61    #  =
	EXCLAMATION  = 33    #  !
	FORWARDSLASH = 47    #  /
	NOT          = 172   #  ¬
	PERCENT      = 37    #  %
	PERIOD       = 46    #  .
	PLUS         = 43    #  +
	POUND        = 35    #  #
	QUESTION     = 47    #  ?
	QUOTE        = 34    #  "
	SEMICOLON    = 59    #  ;
	SINGLEQUOTE  = 39    #  '
	TILDE        = 126   #  ~
	UNDERSCORE   = 95    #  _
	SYMBOLS = BRACKETS + [ACUTE_ACCENT,AMPERSAND,ASTERISK,AT,BACKSLASH,BACKTICK,BAR,BROKEN_BAR,CARET,COLON,COMMA,DASH,DIAERESIS,DOLLAR,ELLIPSIS,EQUALS,EXCLAMATION,FORWARDSLASH,NOT,PERCENT,PERIOD,PLUS,POUND,QUESTION,QUOTE,SEMICOLON,SINGLEQUOTE,TILDE,UNDERSCORE]