Reputation: 97
Trying to implement a alternate color for every other widget I add.... Like a dark and light approach to better separate each widget.
If I add a new widget I want color (1, 0, 0, 1) and when I add another one it should be (0, 1, 0, 1)
This code replicates a really simple version of my app. I'd love some help please in understanding how to implementing this.
Thanks
Main.py
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.config import Config
from kivy.utils import get_color_from_hex
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.behaviors import ButtonBehavior
from kivy.uix.popup import Popup
from kivy.animation import Animation
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.uix.colorpicker import ColorPicker
from kivy.properties import ObjectProperty
from kivy.uix.textinput import TextInput
from kivy.clock import Clock
from kivy.uix.widget import Widget
from kivy.properties import ListProperty
import json
import os
from time import strftime
import smtplib
from gmail import GMail, Message
class ScreenGenerator(ScreenManager):
pass
class Trackers(Screen):
data = 'data.json'
storage = []
path = ''
#def on_pre_enter(self):
#self.path = App.get_running_app().user_data_dir + '/'
#self.loadData(self.data)
#for dictionary in self.storage:
#for k, v in dictionary.items():
#self.ids.track.add_widget(Tracker(text=k, number=v, data=self.storage))
def on_pre_leave(self):
self.ids.track.clear_widgets()
self.saveData(self.data)
def loadData(self, data, *args):
try:
with open(self.path + data, 'r') as d:
self.storage = json.load(d)
print(self.storage, 'data loaded')
except FileNotFoundError:
pass
def addWidget(self):
box = BoxLayout(orientation= 'vertical', padding=10, spacing=15)
pop = Popup(title='Tracker:', content=box, size_hint=(None,None), height=(self.width / 2), width=(self.width))
text_input = TextInput(hint_text='Add Trackers', multiline=False, size_hint=(1, None), size=(self.width - 125, 65))
okay = Button(text='Save', size_hint=(1, None), size=(self.width - 125, self.width / 8), on_press=lambda *args :self.addit(text_input.text), on_release=pop.dismiss)
input_Len = Label(bold=True, halign="center", text="", size_hint=(1, 0.5))
limit = Label(opacity=.3, halign="left", bold=True, text="Character Limit 35".upper(), size_hint=(1, 0.5))
text_input.bind(text=lambda instance, text: setattr(input_Len, "text", str(len(text))))
box.add_widget(limit)
box.add_widget(input_Len)
box.add_widget(text_input)
box.add_widget(okay)
pop.open()
def addit(self, text_input, *args):
keys = []
for dictionary in self.storage:
for k, v in dictionary.items():
keys.append(k)
if text_input not in keys:
num = '0'
self.ids.track.add_widget(Tracker(text=text_input, number=num, data=self.storage))
self.storage.append({text_input: '0'})
else:
box = BoxLayout(orientation= 'vertical', padding=80, spacing=5)
pop = Popup(title=f'Opps: "{text_input}" is already listed below', content=box, size_hint=(None,None), height=(self.width - self.width / 2), width=(self.width / 2))
try_again = Button(text='Try Again', on_release=pop.dismiss)
box.add_widget(try_again)
pop.open()
class Tracker(BoxLayout):
def __init__(self, text='', number='', data={}, **kwargs):
super().__init__(**kwargs)
self.ids.label.text = text
self.ids.count_add.text = number
def cor( self):
return (1, 0, 0, 1)
def corr(self):
return (0, 1, 0, 1)
class Pess(App):
def build(self):
Config.set('graphics', 'width', '600')
Config.set('graphics', 'height', '800')
from kivy.core.window import Window
Window.clearcolor = get_color_from_hex('#262829')
return ScreenGenerator()
if __name__ == '__main__':
Pess().run()
pess.kv
#:import rgba kivy.utils.get_color_from_hex
# encoding: utf-8
<Label>:
font_size: '17dp'
<RoundButton@ButtonBehavior+Label>:
canvas.before:
Color:
rgba: 0.8, 0.3, 0.1, 1
Ellipse:
pos: self.width / 2.265, self.y + 130
size: self.height - self.height / 1.5, self.height / 3
<FloatButton@ButtonBehavior+FloatLayout>:
id: float_root
size_hint: (None, None)
text: '[b]+[/b]'
font_size: '48dp'
btn_size: (140,140)
size: (140,140)
bg_color: (0.8, 0.3, 0.1, 1)
pos_hint: {'x': 5.4, 'y': .17}
Button:
text: float_root.text
font_size: '14dp'
markup: True
size_hint: (None, None)
size: float_root.btn_size
pos_hint: float_root.pos_hint
background_normal: ''
background_color: (0,1,0,0)
canvas.before:
Color:
rgba: float_root.bg_color
Ellipse:
pos: self.pos
size: self.size
<TrackerButton@Button>:
background_color: 0,0,0,0
<ScreenGenerator>:
Trackers:
name: 'track'
<Trackers>:
BoxLayout:
orientation: 'vertical'
ActionBar:
height: self.minimum_height + dp(50)
size_hint_y: None
background_image: ''
background_color: rgba('#ffffff') #rgba('#0B3242')
ActionView:
ActionPrevious:
title: '[b]TRACKERS[/b]'
font_size: '17dp'
color: rgba('#AFB7BA')
markup: True
on_release: app.root.current = 'pess'
ScrollView:
BoxLayout:
id: track
orientation: 'vertical'
padding: 15
spacing: 45
size_hint_y: None
height: self.minimum_height
FloatLayout:
size_hint_y: None
height: 0
Button:
text: '+'
font_size: '75dp'
pos: self.width * 7.4, self.height + self.height / 2
size_hint_y: None
size_hint_x: None
background_image: ''
background_color: (0,0,0,0)
on_release: root.addWidget()
<Tracker>:
count_add: count_add
name: name
size_hint_y: None
height: dp(73)
canvas.before:
Color:
rgba: root.cor() or root.corr()
Rectangle:
pos: self.pos[0] + self.height/2, self.pos[1]
size: self.size[0], self.height
Ellipse:
pos: self.pos[0], self.pos[1]
size: self.height, self.height
TrackerButton:
text: '[b]X[/b]'
markup: True
size_hint_x: None
width: 120
Label:
id: name
canvas.before:
Color:
rgba: (1,1,1,.7)
Rectangle:
size: self.size
pos: self.pos
size_hint_x: None
width: 1
TrackerButton:
id: label
font_size: '16dp'
halign: 'left'
text_size: 600, None
#on_release: app.root.get_screen('track').change_name(root)
TrackerButton:
id: count_add
font_size: '16dp'
text: '0'
size_hint_x: None
width: 120
#on_release: app.root.get_screen('track').add_num(root)
Label:
canvas.before:
Color:
rgba: (1,1,1,.7)
Rectangle:
size: self.size
pos: self.pos
size_hint_x: None
width: 1
TrackerButton:
text: '[b]-[/b]'
font_size: '24dp'
markup: True
size_hint_x: None
width: 120
#on_release: app.root.get_screen('track').subtract_num(root)
Upvotes: 0
Views: 215
Reputation: 38962
You can accomplish this by adding a BooleanProperty
to the Tracker
class as well as a class level instance counter:
class Tracker(BoxLayout):
instance_count = 0 # class variable
isEven = BooleanProperty(True) # instance level Property
def __init__(self, text='', number='', data={}, **kwargs):
super().__init__(**kwargs)
self.ids.label.text = text
self.ids.count_add.text = number
# set the BooleanProperty and increment the instance count
self.isEven = Tracker.instance_count % 2 == 0
Tracker.instance_count += 1
Then, in the kv
file, you can select the color based on the BooleanProperty
:
<Tracker>:
count_add: count_add
name: name
size_hint_y: None
height: dp(73)
canvas.before:
Color:
rgba: root.cor() if self.isEven else root.corr()
Rectangle:
pos: self.pos[0] + self.height/2, self.pos[1]
size: self.size[0], self.height
Ellipse:
pos: self.pos[0], self.pos[1]
size: self.height, self.height
Upvotes: 1