Bounds of DirectGUI object's parent

Scripting Issues
1

This is all about directGUI, so button means DirectButton etc…

I create a frame, then i make button and parent it to frame.

when i do

print button.getParent()

i get Frame,
but when i want to get bounds via button.getParent().getBounds(), i get

bsphere, c <0.7,0,0>,r 1.42

Is that collision sphere or what???
I need to get bounds of parent because i want to make system in which i can place widgets relatively in corner based manner.

I placed object to fit in exact bottom left corner (frame is a2dbottomleft, and button is in corner of frame after frame changes position)

i tried couple of thing like calling node() and whatnot, but cant really get it right…

here is code

from direct.gui.OnscreenText import OnscreenText
from direct.gui.DirectGui import *
from direct.showbase.DirectObject import DirectObject
from pandac.PandaModules import *


class MainMenu(DirectObject):
    def __init__(self):
        self.accept("a", self.posDownLeft)
        self.accept("s", self.posDownRight)
        self.accept("d", self.posTopLeft)
        self.accept("f", self.posTopRight)
        self.text = OnscreenText(text = 'my text string', pos = (-0.9, -0.9), scale = 0.147)
        self.Frame = DirectFrame(frameColor=(0,0,0,1) , frameSize=(0,1.41,0,1.123 ) )
        self.Frame.reparentTo(base.a2dBottomLeft)
        self.Frame.setPos(self.Frame, 0.5,0,0.5)
        #Add button
        self.b = DirectButton(text = ("T", "click!", "rolling over", "disabled"), scale=.4)
        self.b.reparentTo(self.Frame)
        
    def posDownLeft(self):
        x = self.b.getBounds()
        scale = self.b['scale']
        posX = x[0]*scale*-1
        posy = x[2]*scale*-1
        self.b.setPos(posX,0,posy)
        
    def posTopLeft(self):
        bounds = self.b.getBounds()
        scale = self.b['scale']
        parent = self.b.getParent()
        ph = parent.node().getBounds()
        print ph
        posX = bounds[0]*scale*-1 
        posy = bounds[2] * scale *-1
        self.b.setPos(posX,0,posy)

and of course, this is just prototype to get it working, i will write fair wrappers later, that is reason why i dont simply call self.Frame instead of getParent()…

2

To get the perfectly fit bounds, it’s getTightBounds(), but that doesn’t work for DGUI.
So, you could try to recursively query and accumulate the framesize of each widget :

def getWidgetsBounds(parent,bounds=None):
    bounds = parent.node().getFrame() #also try parent['frameSize']
    for c in parent.getChildren():
        cB = getWidgetsBounds(c)
        bounds.setX(min(cB[0],bounds[0])) #L
        bounds.setY(max(cB[1],bounds[1])) #R
        bounds.setZ(min(cB[2],bounds[2])) #B
        bounds.setW(max(cB[3],bounds[3])) #T
    return bounds

Didn’t try it though.

3

Oh thanks very much, getFrame() was thing i needed, it works great :smiley:

4

I’ve just posted a simple snippet to align a widget to the other.

discourse.panda3d.org/viewtopic.php?t=8518