DirectRadioButton

DirectRadioButtons are similar to check buttons, except only one button is selected when it is clicked. Their usage is almost identical to regular buttons, except that the text area and box area can be modified separately.

Keyword	Definition	Value
text_scale	Scale of the displayed text	(sx,sz)
indicatorValue	The initial boolean state of the radiobutton	0 or 1
variable	The variable whose value will be set by radiobutton. Since we can not use call by reference for int or string variables in python, I used a list instead.	define a list and pass it
value	The value to be set to the variable. Since we are using a list, we can define multiple values. But the length of value list must be same as length of variable list.	a list of values
others	The list of radio button instances sharing same variable. This must be set by using setOthers() after all radiobuttons are created.	a list of radioButton instances
boxImage	BG Image of the radio button	Image Path
boxImageColor	Color of the BG image	(R,G,B,A)
boxImageScale	Scale of the BG image	Number
boxGeom	FG Image on the radio button	Image Path
boxGeomColor	Color of the FG image	(R,G,B,A)
boxGeomScale	Scale of the FG image	Number
boxPlacement	Position of the box relative to the text area	‘left’,’right’, ‘above’, ‘below’, ‘center’
boxBorder	Size of the border around the box	Number
command	Command the button performs when clicked. Function
extraArgs	Extra arguments to the function specified in command	[Extra Arguments]
commandButtons	Which mouse button must be clicked to do the command	LMB, MMB, or RMB
rolloverSound	The sound made when the cursor rolls over the button	Sound File Path
clickSound	The sound made when the cursor clicks on the button	Sound File Path
pressEffect	Whether or not the button sinks in when clicked	<0 or 1>

Example

import direct.directbase.DirectStart
from direct.gui.OnscreenText import OnscreenText
from direct.gui.DirectGui import *
from panda3d.core import *

v = [0]
# Add some text
bk_text = "This is my Demo"
textObject = OnscreenText(text=bk_text, pos=(0.95, -0.95), scale=0.07,
                          fg=(1, 0.5, 0.5, 1), align=TextNode.ACenter,
                          mayChange=1)

# Callback function to set  text
def setText(status=None):
    bk_text = "CurrentValue : %s"%v
    textObject.setText(bk_text)

# Add button
buttons = [
    DirectRadioButton(text='RadioButton0', variable=v, value=[0],
                      scale=0.05, pos=(-0.4, 0, 0), command=setText),
    DirectRadioButton(text='RadioButton1', variable=v, value=[1],
                      scale=0.05, pos=(0, 0, 0), command=setText),
    DirectRadioButton(text='RadioButton2', variable=v, value=[2],
                      scale=0.05, pos=(0.4, 0, 0), command=setText)
]

for button in buttons:
    button.setOthers(buttons)

# Run the tutorial
base.run()