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# Copyright 2007 Nanorex, Inc. See LICENSE file for details.
"""
PM_Slider.py
@author: Ninad
@version: $Id$
@copyright: 2007 Nanorex, Inc. See LICENSE file for details.
History:
ninad 2007-08-21: Created.
"""
from PyQt4.Qt import Qt
from PyQt4.Qt import QSlider
from PyQt4.Qt import QLabel
from PyQt4.Qt import QWidget
class PM_Slider(QSlider):
labelWidget = None
def __init__( self,
parentWidget,
orientation = None, ##Qt.Horizontal,
currentValue = 0,
minimum = 0,
maximum = 100,
label = '',
labelColumn = 0,
setAsDefault = True,
spanWidth = True):
"""
Appends a Qslider widget (with a QLabel widget) to <parentWidget>
a property manager group box.
Arguments:
@param parentWidget: the group box containing this PM widget.
@type parentWidget: PM_GroupBox
@param currentValue:
@type currentValue: int
@param minimum: minimum value the slider can get.
(used to set its 'range')
@type minimum: int
@param maximum: maximum value the slider can get.
(used to set its 'range')
@type maximum: int
@param label: label that appears to the left of (or above) this widget.
@type label: str
@param labelColumn: The column number of the label in the group box
grid layout. The only valid values are 0 (left
column) and 1 (right column). The default is 0
(left column).
@type labelColumn: int
@param setAsDefault: if True, will restore value when the
"Restore Defaults" button is clicked.
@type setAsDefault: bool (default True)
@param spanWidth: If True, the widget and its label will span the width
of the group box. Its label will appear directly above
the widget (unless the label is empty)and is left justified.
@type spanWidth: bool (default True)
@see: U{B{QSlider}<http://doc.trolltech.com/4/qslider.html>}
"""
##QSlider.__init__(self, orientation, parentWidget)
QSlider.__init__(self, parentWidget)
self.parentWidget = parentWidget
self.label = label
self.labelColumn = labelColumn
self.setAsDefault = setAsDefault
self.spanWidth = spanWidth
#Ideally, this should be simply self.setOrientation(orientation) with the
#default orientation = Qt.Horizontal in the init argument itself. But,
#apparently pylint chokes up when init argument is a Qt enum.
#This problem happened while running pylint 0.23 on the SEMBOT server
#so comitting this temporary workaround. The pylint on my machine is
#0.25 and it runs fine even before this workaround. Similar changes made
#in PM_CheckBox. -- Ninad 2008-06-30
if orientation is None:
self.setOrientation(Qt.Horizontal)
else:
self.setOrientation(orientation)
if label: # Create this widget's QLabel.
self.labelWidget = QLabel()
self.labelWidget.setText(label)
self.setValue(currentValue)
self.setRange(minimum, maximum)
self.setAsDefault = setAsDefault
if self.setAsDefault:
self.setDefaultValue(currentValue)
parentWidget.addPmWidget(self)
def hide(self):
"""
Hides the slider and its label (if it has one).
@see: L{show}
"""
QWidget.hide(self)
if self.labelWidget:
self.labelWidget.hide()
def show(self):
"""
Unhides the slider and its label (if it has one).
@see: L{hide}
"""
QWidget.show(self)
if self.labelWidget:
self.labelWidget.show()
def restoreDefault(self):
"""
Restores the default value.
"""
if self.setAsDefault:
self.setValue(self.defaultValue)
def setDefaultValue(self, value):
"""
Sets the Default value for the slider. This value will be set if
user hits Restore Defaults button in the Property Manager.
"""
self.defaultValue = value
self.setAsDefault = True
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