#!/usr/bin/env python
 
 
#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:BSD$
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##   * Redistributions of source code must retain the above copyright
##     notice, this list of conditions and the following disclaimer.
##   * Redistributions in binary form must reproduce the above copyright
##     notice, this list of conditions and the following disclaimer in
##     the documentation and/or other materials provided with the
##     distribution.
##   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
##     the names of its contributors may be used to endorse or promote
##     products derived from this software without specific prior written
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## $QT_END_LICENSE$
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#############################################################################
 
 
from PyQt5.QtCore import pyqtSignal, Qt
from PyQt5.QtWidgets import (QApplication, QBoxLayout, QCheckBox, QComboBox,
        QDial, QGridLayout, QGroupBox, QHBoxLayout, QLabel, QScrollBar,
        QSlider, QSpinBox, QStackedWidget, QWidget)
 
 
class SlidersGroup(QGroupBox):
 
    valueChanged = pyqtSignal(int)
 
    def __init__(self, orientation, title, parent=None):
        super(SlidersGroup, self).__init__(title, parent)
 
        self.slider = QSlider(orientation)
        self.slider.setFocusPolicy(Qt.StrongFocus)
        self.slider.setTickPosition(QSlider.TicksBothSides)
        self.slider.setTickInterval(10)
        self.slider.setSingleStep(1)
 
        self.scrollBar = QScrollBar(orientation)
        self.scrollBar.setFocusPolicy(Qt.StrongFocus)
 
        self.dial = QDial()
        self.dial.setFocusPolicy(Qt.StrongFocus)
 
        self.slider.valueChanged.connect(self.scrollBar.setValue)
        self.scrollBar.valueChanged.connect(self.dial.setValue)
        self.dial.valueChanged.connect(self.slider.setValue)
        self.dial.valueChanged.connect(self.valueChanged)
 
        if orientation == Qt.Horizontal:
            direction = QBoxLayout.TopToBottom
        else:
            direction = QBoxLayout.LeftToRight
 
        slidersLayout = QBoxLayout(direction)
        slidersLayout.addWidget(self.slider)
        slidersLayout.addWidget(self.scrollBar)
        slidersLayout.addWidget(self.dial)
        self.setLayout(slidersLayout)    
 
    def setValue(self, value):    
        self.slider.setValue(value)    
 
    def setMinimum(self, value):    
        self.slider.setMinimum(value)
        self.scrollBar.setMinimum(value)
        self.dial.setMinimum(value)    
 
    def setMaximum(self, value):    
        self.slider.setMaximum(value)
        self.scrollBar.setMaximum(value)
        self.dial.setMaximum(value)    
 
    def invertAppearance(self, invert):
        self.slider.setInvertedAppearance(invert)
        self.scrollBar.setInvertedAppearance(invert)
        self.dial.setInvertedAppearance(invert)    
 
    def invertKeyBindings(self, invert):
        self.slider.setInvertedControls(invert)
        self.scrollBar.setInvertedControls(invert)
        self.dial.setInvertedControls(invert)
 
 
class Window(QWidget):
    def __init__(self):
        super(Window, self).__init__()
 
        self.horizontalSliders = SlidersGroup(Qt.Horizontal,
                "Horizontal")
        self.verticalSliders = SlidersGroup(Qt.Vertical, "Vertical")
 
        self.stackedWidget = QStackedWidget()
        self.stackedWidget.addWidget(self.horizontalSliders)
        self.stackedWidget.addWidget(self.verticalSliders)
 
        self.createControls("Controls")
 
        self.horizontalSliders.valueChanged.connect(self.verticalSliders.setValue)
        self.verticalSliders.valueChanged.connect(self.valueSpinBox.setValue)
        self.valueSpinBox.valueChanged.connect(self.horizontalSliders.setValue)
 
        layout = QHBoxLayout()
        layout.addWidget(self.controlsGroup)
        layout.addWidget(self.stackedWidget)
        self.setLayout(layout)
 
        self.minimumSpinBox.setValue(0)
        self.maximumSpinBox.setValue(20)
        self.valueSpinBox.setValue(5)
 
        self.setWindowTitle("Sliders")
 
    def createControls(self, title):
        self.controlsGroup = QGroupBox(title)
 
        minimumLabel = QLabel("Minimum value:")
        maximumLabel = QLabel("Maximum value:")
        valueLabel = QLabel("Current value:")
 
        invertedAppearance = QCheckBox("Inverted appearance")
        invertedKeyBindings = QCheckBox("Inverted key bindings")
 
        self.minimumSpinBox = QSpinBox()
        self.minimumSpinBox.setRange(-100, 100)
        self.minimumSpinBox.setSingleStep(1)
 
        self.maximumSpinBox = QSpinBox()
        self.maximumSpinBox.setRange(-100, 100)
        self.maximumSpinBox.setSingleStep(1)
 
        self.valueSpinBox = QSpinBox()
        self.valueSpinBox.setRange(-100, 100)
        self.valueSpinBox.setSingleStep(1)
 
        orientationCombo = QComboBox()
        orientationCombo.addItem("Horizontal slider-like widgets")
        orientationCombo.addItem("Vertical slider-like widgets")
 
        orientationCombo.activated.connect(self.stackedWidget.setCurrentIndex)
        self.minimumSpinBox.valueChanged.connect(self.horizontalSliders.setMinimum)
        self.minimumSpinBox.valueChanged.connect(self.verticalSliders.setMinimum)
        self.maximumSpinBox.valueChanged.connect(self.horizontalSliders.setMaximum)
        self.maximumSpinBox.valueChanged.connect(self.verticalSliders.setMaximum)
        invertedAppearance.toggled.connect(self.horizontalSliders.invertAppearance)
        invertedAppearance.toggled.connect(self.verticalSliders.invertAppearance)
        invertedKeyBindings.toggled.connect(self.horizontalSliders.invertKeyBindings)
        invertedKeyBindings.toggled.connect(self.verticalSliders.invertKeyBindings)
 
        controlsLayout = QGridLayout()
        controlsLayout.addWidget(minimumLabel, 0, 0)
        controlsLayout.addWidget(maximumLabel, 1, 0)
        controlsLayout.addWidget(valueLabel, 2, 0)
        controlsLayout.addWidget(self.minimumSpinBox, 0, 1)
        controlsLayout.addWidget(self.maximumSpinBox, 1, 1)
        controlsLayout.addWidget(self.valueSpinBox, 2, 1)
        controlsLayout.addWidget(invertedAppearance, 0, 2)
        controlsLayout.addWidget(invertedKeyBindings, 1, 2)
        controlsLayout.addWidget(orientationCombo, 3, 0, 1, 3)
        self.controlsGroup.setLayout(controlsLayout)
 
 
if __name__ == '__main__':
 
    import sys
 
    app = QApplication(sys.argv)
    window = Window()
    window.show()
    sys.exit(app.exec_())