mirror of
https://github.com/Sneed-Group/Poodletooth-iLand
synced 2024-12-26 13:12:30 -06:00
436 lines
16 KiB
Python
436 lines
16 KiB
Python
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"""
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Dial Class: Velocity style controller for floating point values with
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a label, entry (validated), and scale
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"""
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__all__ = ['Dial', 'AngleDial', 'DialWidget']
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from direct.showbase.TkGlobal import *
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from Tkinter import *
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from Valuator import Valuator, VALUATOR_MINI, VALUATOR_FULL
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from direct.task import Task
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import math, string, operator, Pmw
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from pandac.PandaModules import ClockObject
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TWO_PI = 2.0 * math.pi
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ONEPOINTFIVE_PI = 1.5 * math.pi
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POINTFIVE_PI = 0.5 * math.pi
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INNER_SF = 0.2
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DIAL_FULL_SIZE = 45
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DIAL_MINI_SIZE = 30
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class Dial(Valuator):
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"""
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Valuator widget which includes an angle dial and an entry for setting
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floating point values
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"""
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def __init__(self, parent = None, **kw):
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INITOPT = Pmw.INITOPT
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optiondefs = (
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('style', VALUATOR_FULL, INITOPT),
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('base', 0.0, self.setBase),
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('delta', 1.0, self.setDelta),
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('fSnap', 0, self.setSnap),
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('fRollover', 1, self.setRollover),
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)
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self.defineoptions(kw, optiondefs)
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Valuator.__init__(self, parent)
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self.initialiseoptions(Dial)
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def createValuator(self):
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self._valuator = self.createcomponent(
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'valuator',
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(('dial', 'valuator'),),
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None,
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DialWidget,
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(self.interior(),),
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style = self['style'],
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command = self.setEntry,
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value = self['value'])
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self._valuator._widget.bind('<Double-ButtonPress-1>', self.mouseReset)
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def packValuator(self):
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if self['style'] == VALUATOR_FULL:
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self._valuator.grid(rowspan = 2, columnspan = 2,
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padx = 2, pady = 2)
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if self._label:
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self._label.grid(row = 0, column = 2, sticky = EW)
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self._entry.grid(row = 1, column = 2, sticky = EW)
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self.interior().columnconfigure(2, weight = 1)
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else:
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if self._label:
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self._label.grid(row=0, column=0, sticky = EW)
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self._entry.grid(row=0, column=1, sticky = EW)
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self._valuator.grid(row=0, column=2, padx = 2, pady = 2)
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self.interior().columnconfigure(0, weight = 1)
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def addValuatorPropertiesToDialog(self):
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self.addPropertyToDialog(
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'base',
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{ 'widget': self._valuator,
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'type': 'real',
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'help': 'Dial value = base + delta * numRevs'})
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self.addPropertyToDialog(
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'delta',
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{ 'widget': self._valuator,
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'type': 'real',
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'help': 'Dial value = base + delta * numRevs'})
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self.addPropertyToDialog(
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'numSegments',
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{ 'widget': self._valuator,
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'type': 'integer',
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'help': 'Number of segments to divide dial into.'})
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def addValuatorMenuEntries(self):
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# The popup menu
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self._fSnap = IntVar()
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self._fSnap.set(self['fSnap'])
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self._popupMenu.add_checkbutton(label = 'Snap',
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variable = self._fSnap,
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command = self._setSnap)
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self._fRollover = IntVar()
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self._fRollover.set(self['fRollover'])
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if self['fAdjustable']:
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self._popupMenu.add_checkbutton(label = 'Rollover',
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variable = self._fRollover,
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command = self._setRollover)
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def setBase(self):
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""" Set Dial base value: value = base + delta * numRevs """
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self._valuator['base'] = self['base']
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def setDelta(self):
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""" Set Dial delta value: value = base + delta * numRevs """
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self._valuator['delta'] = self['delta']
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def _setSnap(self):
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""" Menu command to turn Dial angle snap on/off """
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self._valuator['fSnap'] = self._fSnap.get()
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def setSnap(self):
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""" Turn Dial angle snap on/off """
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self._fSnap.set(self['fSnap'])
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# Call menu command to send down to valuator
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self._setSnap()
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def _setRollover(self):
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"""
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Menu command to turn Dial rollover on/off (i.e. does value accumulate
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every time you complete a revolution of the dial?)
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"""
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self._valuator['fRollover'] = self._fRollover.get()
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def setRollover(self):
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""" Turn Dial rollover (accumulation of a sum) on/off """
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self._fRollover.set(self['fRollover'])
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# Call menu command to send down to valuator
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self._setRollover()
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class AngleDial(Dial):
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def __init__(self, parent = None, **kw):
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# Set the typical defaults for a 360 degree angle dial
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optiondefs = (
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('delta', 360.0, None),
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('fRollover', 0, None),
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('dial_numSegments', 12, None),
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)
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self.defineoptions(kw, optiondefs)
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# Initialize the superclass
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Dial.__init__(self, parent)
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# Needed because this method checks if self.__class__ is myClass
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# where myClass is the argument passed into inialiseoptions
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self.initialiseoptions(AngleDial)
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class DialWidget(Pmw.MegaWidget):
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def __init__(self, parent = None, **kw):
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#define the megawidget options
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INITOPT = Pmw.INITOPT
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optiondefs = (
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# Appearance
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('style', VALUATOR_FULL, INITOPT),
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('size', None, INITOPT),
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('relief', SUNKEN, self.setRelief),
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('borderwidth', 2, self.setBorderwidth),
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('background', 'white', self.setBackground),
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# Number of segments the dial is divided into
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('numSegments', 10, self.setNumSegments),
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# Behavior
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# Initial value of dial, use self.set to change value
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('value', 0.0, INITOPT),
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('numDigits', 2, self.setNumDigits),
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# Dial specific options
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('base', 0.0, None),
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('delta', 1.0, None),
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# Snap to angle on/off
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('fSnap', 0, None),
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# Do values rollover (i.e. accumulate) with multiple revolutions
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('fRollover', 1, None),
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# Command to execute on dial updates
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('command', None, None),
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# Extra data to be passed to command function
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('commandData', [], None),
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# Callback's to execute during mouse interaction
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('preCallback', None, None),
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('postCallback', None, None),
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# Extra data to be passed to callback function, needs to be a list
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('callbackData', [], None),
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)
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self.defineoptions(kw, optiondefs)
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# Initialize the superclass
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Pmw.MegaWidget.__init__(self, parent)
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# Set up some local and instance variables
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# Create the components
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interior = self.interior()
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# Current value
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self.value = self['value']
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# Running total which increments/decrements every time around dial
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self.rollCount = 0
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# Base dial size on style, if size not specified,
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if not self['size']:
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if self['style'] == VALUATOR_FULL:
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size = DIAL_FULL_SIZE
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else:
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size = DIAL_MINI_SIZE
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else:
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size = self['size']
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# Radius of the dial
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radius = self.radius = int(size/2.0)
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# Radius of the inner knob
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inner_radius = max(3, radius * INNER_SF)
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# The canvas
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self._widget = self.createcomponent('canvas', (), None,
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Canvas, (interior,),
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width = size, height = size,
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background = self['background'],
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highlightthickness = 0,
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scrollregion = (-radius, -radius,
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radius, radius))
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self._widget.pack(expand = 1, fill = BOTH)
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# The dial face (no outline/fill, primarily for binding mouse events)
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self._widget.create_oval(-radius, -radius, radius, radius,
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outline = '',
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tags = ('dial',))
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# The indicator
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self._widget.create_line(0, 0, 0, -radius, width = 2,
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tags = ('indicator', 'dial'))
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# The central knob
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self._widget.create_oval(-inner_radius, -inner_radius,
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inner_radius, inner_radius,
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fill = 'grey50',
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tags = ('knob',))
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# Add event bindings
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self._widget.tag_bind('dial', '<ButtonPress-1>', self.mouseDown)
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self._widget.tag_bind('dial', '<B1-Motion>', self.mouseMotion)
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self._widget.tag_bind('dial', '<Shift-B1-Motion>',
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self.shiftMouseMotion)
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self._widget.tag_bind('dial', '<ButtonRelease-1>', self.mouseUp)
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self._widget.tag_bind('knob', '<ButtonPress-1>', self.knobMouseDown)
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self._widget.tag_bind('knob', '<B1-Motion>', self.updateDialSF)
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self._widget.tag_bind('knob', '<ButtonRelease-1>', self.knobMouseUp)
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self._widget.tag_bind('knob', '<Enter>', self.highlightKnob)
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self._widget.tag_bind('knob', '<Leave>', self.restoreKnob)
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# Make sure input variables processed
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self.initialiseoptions(DialWidget)
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def set(self, value, fCommand = 1):
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"""
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self.set(value, fCommand = 1)
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Set dial to new value, execute command if fCommand == 1
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"""
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# Adjust for rollover
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if not self['fRollover']:
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if value > self['delta']:
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self.rollCount = 0
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value = self['base'] + ((value - self['base']) % self['delta'])
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# Send command if any
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if fCommand and (self['command'] != None):
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apply(self['command'], [value] + self['commandData'])
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# Record value
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self.value = value
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def get(self):
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"""
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self.get()
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Get current dial value
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"""
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return self.value
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## Canvas callback functions
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# Dial
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def mouseDown(self, event):
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self._onButtonPress()
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self.lastAngle = dialAngle = self.computeDialAngle(event)
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self.computeValueFromAngle(dialAngle)
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def mouseUp(self, event):
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self._onButtonRelease()
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def shiftMouseMotion(self, event):
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self.mouseMotion(event, 1)
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def mouseMotion(self, event, fShift = 0):
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dialAngle = self.computeDialAngle(event, fShift)
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self.computeValueFromAngle(dialAngle)
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def computeDialAngle(self, event, fShift = 0):
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x = self._widget.canvasx(event.x)
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y = self._widget.canvasy(event.y)
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rawAngle = math.atan2(y, x)
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# Snap to grid
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# Convert to dial coords to do snapping
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dialAngle = rawAngle + POINTFIVE_PI
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if operator.xor(self['fSnap'], fShift):
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dialAngle = round(dialAngle / self.snapAngle) * self.snapAngle
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return dialAngle
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def computeValueFromAngle(self, dialAngle):
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delta = self['delta']
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dialAngle = dialAngle % TWO_PI
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# Check for rollover, if necessary
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if (self.lastAngle > ONEPOINTFIVE_PI) and (dialAngle < POINTFIVE_PI):
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self.rollCount += 1
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elif (self.lastAngle < POINTFIVE_PI) and (dialAngle > ONEPOINTFIVE_PI):
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self.rollCount -= 1
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self.lastAngle = dialAngle
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# Update value
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newValue = self['base'] + (self.rollCount + (dialAngle/TWO_PI)) * delta
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self.set(newValue)
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def updateIndicator(self, value):
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# compute new indicator angle
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delta = self['delta']
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factors = divmod(value - self['base'], delta)
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self.rollCount = factors[0]
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self.updateIndicatorRadians((factors[1]/delta) * TWO_PI)
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def updateIndicatorDegrees(self, degAngle):
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self.updateIndicatorRadians(degAngle * (math.pi/180.0))
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def updateIndicatorRadians(self, dialAngle):
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rawAngle = dialAngle - POINTFIVE_PI
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# Compute end points
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endx = math.cos(rawAngle) * self.radius
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endy = math.sin(rawAngle) * self.radius
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# Draw new indicator
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self._widget.coords('indicator', endx * INNER_SF, endy * INNER_SF,
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endx, endy)
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# Knob velocity controller
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def knobMouseDown(self, event):
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self._onButtonPress()
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self.knobSF = 0.0
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self.updateTask = taskMgr.add(self.updateDialTask, 'updateDial')
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self.updateTask.lastTime = globalClock.getFrameTime()
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def updateDialTask(self, state):
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# Update value
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currT = globalClock.getFrameTime()
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dt = currT - state.lastTime
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self.set(self.value + self.knobSF * dt)
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state.lastTime = currT
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return Task.cont
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def updateDialSF(self, event):
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x = self._widget.canvasx(event.x)
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y = self._widget.canvasy(event.y)
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offset = max(0, abs(x) - Valuator.deadband)
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if offset == 0:
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return 0
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sf = math.pow(Valuator.sfBase,
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self.minExp + offset/Valuator.sfDist)
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if x > 0:
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self.knobSF = sf
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else:
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self.knobSF = -sf
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def knobMouseUp(self, event):
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taskMgr.remove(self.updateTask)
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self.knobSF = 0.0
|
||
|
|
self._onButtonRelease()
|
||
|
|
|
||
|
|
def setNumDigits(self):
|
||
|
|
# Set minimum exponent to use in velocity task
|
||
|
|
self.minExp = math.floor(-self['numDigits']/
|
||
|
|
math.log10(Valuator.sfBase))
|
||
|
|
|
||
|
|
# Methods to modify dial characteristics
|
||
|
|
def setRelief(self):
|
||
|
|
self.interior()['relief'] = self['relief']
|
||
|
|
|
||
|
|
def setBorderwidth(self):
|
||
|
|
self.interior()['borderwidth'] = self['borderwidth']
|
||
|
|
|
||
|
|
def setBackground(self):
|
||
|
|
self._widget['background'] = self['background']
|
||
|
|
|
||
|
|
def setNumSegments(self):
|
||
|
|
self._widget.delete('ticks')
|
||
|
|
# Based upon input snap angle, how many ticks
|
||
|
|
numSegments = self['numSegments']
|
||
|
|
# Compute snapAngle (radians)
|
||
|
|
self.snapAngle = snapAngle = TWO_PI / numSegments
|
||
|
|
# Create the ticks at the snap angles
|
||
|
|
for ticknum in range(numSegments):
|
||
|
|
angle = snapAngle * ticknum
|
||
|
|
# convert to canvas coords
|
||
|
|
angle = angle - POINTFIVE_PI
|
||
|
|
# Compute tick endpoints
|
||
|
|
startx = math.cos(angle) * self.radius
|
||
|
|
starty = math.sin(angle) * self.radius
|
||
|
|
# Elongate ticks at 90 degree points
|
||
|
|
if (angle % POINTFIVE_PI) == 0.0:
|
||
|
|
sf = 0.6
|
||
|
|
else:
|
||
|
|
sf = 0.8
|
||
|
|
endx = startx * sf
|
||
|
|
endy = starty * sf
|
||
|
|
self._widget.create_line(startx, starty, endx, endy,
|
||
|
|
tags = ('ticks','dial'))
|
||
|
|
|
||
|
|
def highlightKnob(self, event):
|
||
|
|
self._widget.itemconfigure('knob', fill = 'black')
|
||
|
|
|
||
|
|
def restoreKnob(self, event):
|
||
|
|
self._widget.itemconfigure('knob', fill = 'grey50')
|
||
|
|
|
||
|
|
# To call user callbacks
|
||
|
|
def _onButtonPress(self, *args):
|
||
|
|
""" User redefinable callback executed on button press """
|
||
|
|
if self['preCallback']:
|
||
|
|
apply(self['preCallback'], self['callbackData'])
|
||
|
|
|
||
|
|
def _onButtonRelease(self, *args):
|
||
|
|
""" User redefinable callback executed on button release """
|
||
|
|
if self['postCallback']:
|
||
|
|
apply(self['postCallback'], self['callbackData'])
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
tl = Toplevel()
|
||
|
|
d = Dial(tl)
|
||
|
|
d2 = Dial(tl, dial_numSegments = 12, max = 360,
|
||
|
|
dial_fRollover = 0, value = 180)
|
||
|
|
d3 = Dial(tl, dial_numSegments = 12, max = 90, min = -90,
|
||
|
|
dial_fRollover = 0)
|
||
|
|
d4 = Dial(tl, dial_numSegments = 16, max = 256,
|
||
|
|
dial_fRollover = 0)
|
||
|
|
d.pack(expand = 1, fill = X)
|
||
|
|
d2.pack(expand = 1, fill = X)
|
||
|
|
d3.pack(expand = 1, fill = X)
|
||
|
|
d4.pack(expand = 1, fill = X)
|