116 lines
4.0 KiB
Python
116 lines
4.0 KiB
Python
from DirectFrame import *
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from DirectButton import *
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from DirectGuiBase import _OPT_VALUE
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"""
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import DirectSlider
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d = DirectSlider(borderWidth=(0,0))
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"""
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class DirectSlider(DirectFrame):
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"""
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DirectSlider -- a widget which represents a slider that the
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user can pull left and right to represent a continuous value.
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"""
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def __init__(self, parent = None, **kw):
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optiondefs = (
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# Define type of DirectGuiWidget
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('pgFunc', PGSliderBar, None),
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('state', NORMAL, None),
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('frameColor', (0.6,0.6,0.6,1), None),
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('range', (0, 1), self.setRange),
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('value', 0, self.__setValue),
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('pageSize', 0.1, self.setPageSize),
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('orientation', HORIZONTAL, self.setOrientation),
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# Function to be called repeatedly as slider is moved
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('command', None, None),
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('extraArgs', [], None),
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)
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if kw.get('orientation') == VERTICAL:
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# These are the default options for a vertical layout.
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optiondefs += (
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('frameSize', (-0.08,0.08,-1,1), None),
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('frameVisibleScale', (0.25,1), None),
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)
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else:
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# These are the default options for a horizontal layout.
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optiondefs += (
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('frameSize', (-1,1,-0.08,0.08), None),
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('frameVisibleScale', (1,0.25), None),
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)
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# Merge keyword options with default options
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self.defineoptions(kw, optiondefs)
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# Initialize superclasses
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DirectFrame.__init__(self, parent)
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self.thumb = self.createcomponent("thumb", (), None,
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DirectButton, (self,),
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borderWidth = self['borderWidth'])
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if self.thumb['frameSize'] == None and \
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self.thumb.bounds == [0.0, 0.0, 0.0, 0.0]:
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# Compute a default frameSize for the thumb.
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f = self['frameSize']
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if self['orientation'] == HORIZONTAL:
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self.thumb['frameSize'] = (f[0]*0.05,f[1]*0.05,f[2],f[3])
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else:
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self.thumb['frameSize'] = (f[0],f[1],f[2]*0.05,f[3]*0.05)
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self.guiItem.setThumbButton(self.thumb.guiItem)
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# Bind command function
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self.bind(ADJUST, self.commandFunc)
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# Call option initialization functions
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self.initialiseoptions(DirectSlider)
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def setRange(self):
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# Try to preserve the value across a setRange call.
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v = self['value']
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r = self['range']
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self.guiItem.setRange(r[0], r[1])
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self['value'] = v
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def __setValue(self):
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# This is the internal function that is called when
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# self['value'] is directly assigned.
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self.guiItem.setValue(self['value'])
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def setValue(self, value):
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# This is the public function that is meant to be called by a
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# user that doesn't like to use (or doesn't understand) the
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# preferred interface of self['value'].
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self['value'] = value
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def getValue(self):
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return self.guiItem.getValue()
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def getRatio(self):
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return self.guiItem.getRatio()
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def setPageSize(self):
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self.guiItem.setPageSize(self['pageSize'])
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def setOrientation(self):
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if self['orientation'] == HORIZONTAL:
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self.guiItem.setAxis(Vec3(1, 0, 0))
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elif self['orientation'] == VERTICAL:
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self.guiItem.setAxis(Vec3(0, 0, 1))
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else:
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raise ValueError, 'Invalid value for orientation: %s' % (self['orientation'])
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def destroy(self):
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DirectFrame.destroy(self)
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def commandFunc(self):
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# Store the updated value in self['value']
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self._optionInfo['value'][_OPT_VALUE] = self.guiItem.getValue()
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if self['command']:
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apply(self['command'], self['extraArgs'])
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