""" qtgui/mgUpperLowerSlider.py: CCP4MG Molecular Graphics Program Copyright (C) 2011 University of York Copyright (C) 2012 STFC This library is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License version 3, modified in accordance with the provisions of the license to address the requirements of UK law. You should have received a copy of the modified GNU Lesser General Public License along with this library. If not, copies may be downloaded from http://www.ccp4.ac.uk/ccp4license.php This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. """ import sys import os import math import functools from PyQt4 import QtGui, QtCore from MGSimpleWidgets import SVGLabel class UpperLowerSlider(QtGui.QWidget): def toggleLock(self,e=None): self._lock = 1-self._lock icon_path = os.path.join(os.environ['CCP4MG'],'qticons') if self._lock == 0: self.padlock.loadFile(os.path.join(icon_path,"padlock_open.svg")) else: self.padlock.loadFile(os.path.join(icon_path,"padlock.svg")) self.repaint() def resizeEvent(self,e): if self._orientation == QtCore.Qt.Horizontal: self.padlock._bounds = QtCore.QRectF(self.s1.width()/2-10,-3,20,20) else: self.padlock._bounds = QtCore.QRectF(self.lowerSpin.width()/2-25,self.s1.height()/2-10,20,20) e.accept() def __init__(self,orientation=None,parent=None): QtGui.QWidget.__init__(self,parent) self._orientation = orientation self.lowerSpin = QtGui.QDoubleSpinBox() self.upperSpin = QtGui.QDoubleSpinBox() layout = QtGui.QGridLayout() if orientation == QtCore.Qt.Horizontal: self.s1 = QtGui.QSlider(QtCore.Qt.Horizontal,parent) self.s2 = QtGui.QSlider(QtCore.Qt.Horizontal,parent) else: self.s1 = QtGui.QSlider(parent) self.s2 = QtGui.QSlider(parent) icon_path = os.path.join(os.environ['CCP4MG'],'qticons') self.lowerSpin.setRange(0,100) self.upperSpin.setRange(0,100) self.s1.setRange(0,100) self.s2.setRange(0,100) self.padlock = SVGLabel() self.padlock.loadFile(os.path.join(icon_path,"padlock_open.svg")) self._lock = 0 self.connect(self.padlock,QtCore.SIGNAL("MousePressed"),self.toggleLock) if orientation == QtCore.Qt.Horizontal: layout.addWidget(self.s1,0,1,1,1) layout.addWidget(self.padlock,1,1,1,1) layout.addWidget(self.s2,2,1,1,1) layout.addWidget(self.lowerSpin,1,0,2,1) layout.addWidget(self.upperSpin,0,2,2,1) lowerLabel = QtGui.QLabel(self.tr("Lower value")) upperLabel = QtGui.QLabel(self.tr("Upper value")) layout.addWidget(lowerLabel,0,0) layout.addWidget(upperLabel,2,2) layout.setRowStretch(3,2) layout.setVerticalSpacing(0) else: layout.addWidget(self.s1,1,0,1,1) layout.addWidget(self.padlock,1,1,1,1) layout.addWidget(self.s2,1,2,1,1) layout.addWidget(self.lowerSpin,2,0,1,3) layout.addWidget(self.upperSpin,0,0,1,3) layout.setColumnStretch(3,2) layout.setHorizontalSpacing(0) self.setLayout(layout) self.sliderScale = 1. self.oldS1Val = self.s1.value() self.oldS2Val = self.s2.value() self.connect(self.s1,QtCore.SIGNAL("valueChanged(int)"),functools.partial(self.valChanged,self.s1)) self.connect(self.s2,QtCore.SIGNAL("valueChanged(int)"),functools.partial(self.valChanged,self.s2)) self.connect(self.upperSpin,QtCore.SIGNAL("valueChanged(double)"),functools.partial(self.valChanged,self.upperSpin)) self.connect(self.lowerSpin,QtCore.SIGNAL("valueChanged(double)"),functools.partial(self.valChanged,self.lowerSpin)) def maximum(self): return self.lowerSpin.maximum() def minimum(self): return self.lowerSpin.minimum() def decimals(self): return self.lowerSpin.decimals() def setRange(self,lower,upper,minDecimals=1): if (upper-lower)<1e-8: return realRange = upper-lower self.sliderScale = 100000.0/realRange self.sliderMin = int(math.floor(self.sliderScale*lower)) self.sliderMax = int(math.floor(self.sliderScale*upper)) self.s1.setRange(self.sliderMin,self.sliderMax) self.s2.setRange(self.sliderMin,self.sliderMax) self.s1.setValue(self.sliderMin) self.s2.setValue(self.sliderMax) self.lowerSpin.setRange(lower,upper) self.upperSpin.setRange(lower,upper) if (upper-lower)<1e-2: decimals = int(math.ceil(math.log(1./(upper-lower),10))+1) else: decimals = 2 self.lowerSpin.setDecimals(max(decimals,minDecimals)) self.upperSpin.setDecimals(max(decimals,minDecimals)) def isClamped(self): #return self.clampCheck.isChecked() return self._lock def getValues(self): return (self.lowerSpin.value(), self.upperSpin.value()) def valChanged(self,emitter,val): self.s1.blockSignals(True) self.s2.blockSignals(True) self.lowerSpin.blockSignals(True) self.upperSpin.blockSignals(True) if emitter is self.lowerSpin: self.s1.setValue(int(val*self.sliderScale)) if self.s1.value()>self.s2.value(): self.s2.setValue(int(val*self.sliderScale)) if emitter is self.upperSpin: self.s2.setValue(int(val*self.sliderScale)) if self.s2.value() self.s2.value() and emitter is self.s1: self.s2.setValue(self.s1.value()) #""" elif emitter is self.s1 and self.isClamped(): diff = self.s1.value() - self.oldS1Val self.s2.setValue(self.s2.value()+diff) #""" self.lowerSpin.setValue(self.s1.value()/self.sliderScale) self.upperSpin.setValue(self.s2.value()/self.sliderScale) self.s1.blockSignals(False) self.s2.blockSignals(False) self.lowerSpin.blockSignals(False) self.upperSpin.blockSignals(False) self.oldS1Val = self.s1.value() self.oldS2Val = self.s2.value() self.emit(QtCore.SIGNAL("rangeChanged"),(self.lowerSpin.value(), self.upperSpin.value())) if __name__ == "__main__": def rangeChanged(vals): min,max = vals print min,max, max-min app = QtGui.QApplication(sys.argv) if sys.argv.count('-v'): slider = UpperLowerSlider(QtCore.Qt.Vertical) else: slider = UpperLowerSlider(QtCore.Qt.Horizontal) slider.setRange(-10,120) app.connect(slider,QtCore.SIGNAL("rangeChanged"),rangeChanged) slider.show() slider.raise_() sys.exit(app.exec_())