Mega Code Archive
Slider group
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the examples of the Qt Toolkit.
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** Alternatively, this file may be used under the terms of the GNU
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#ifndef SLIDERSGROUP_H
#define SLIDERSGROUP_H
#include <QGroupBox>
QT_BEGIN_NAMESPACE
class QDial;
class QScrollBar;
class QSlider;
QT_END_NAMESPACE
class SlidersGroup : public QGroupBox
{
Q_OBJECT
public:
SlidersGroup(Qt::Orientation orientation, const QString &title,
QWidget *parent = 0);
signals:
void valueChanged(int value);
public slots:
void setValue(int value);
void setMinimum(int value);
void setMaximum(int value);
void invertAppearance(bool invert);
void invertKeyBindings(bool invert);
private:
QSlider *slider;
QScrollBar *scrollBar;
QDial *dial;
};
#endif
#include <QtGui>
#include "slidersgroup.h"
SlidersGroup::SlidersGroup(Qt::Orientation orientation, const QString &title,
QWidget *parent)
: QGroupBox(title, parent)
{
slider = new QSlider(orientation);
slider->setFocusPolicy(Qt::StrongFocus);
slider->setTickPosition(QSlider::TicksBothSides);
slider->setTickInterval(10);
slider->setSingleStep(1);
scrollBar = new QScrollBar(orientation);
scrollBar->setFocusPolicy(Qt::StrongFocus);
dial = new QDial;
dial->setFocusPolicy(Qt::StrongFocus);
connect(slider, SIGNAL(valueChanged(int)), scrollBar, SLOT(setValue(int)));
connect(scrollBar, SIGNAL(valueChanged(int)), dial, SLOT(setValue(int)));
connect(dial, SIGNAL(valueChanged(int)), slider, SLOT(setValue(int)));
connect(dial, SIGNAL(valueChanged(int)), this, SIGNAL(valueChanged(int)));
QBoxLayout::Direction direction;
if (orientation == Qt::Horizontal)
direction = QBoxLayout::TopToBottom;
else
direction = QBoxLayout::LeftToRight;
QBoxLayout *slidersLayout = new QBoxLayout(direction);
slidersLayout->addWidget(slider);
slidersLayout->addWidget(scrollBar);
slidersLayout->addWidget(dial);
setLayout(slidersLayout);
}
void SlidersGroup::setValue(int value)
{
slider->setValue(value);
}
void SlidersGroup::setMinimum(int value)
{
slider->setMinimum(value);
scrollBar->setMinimum(value);
dial->setMinimum(value);
}
void SlidersGroup::setMaximum(int value)
{
slider->setMaximum(value);
scrollBar->setMaximum(value);
dial->setMaximum(value);
}
void SlidersGroup::invertAppearance(bool invert)
{
slider->setInvertedAppearance(invert);
scrollBar->setInvertedAppearance(invert);
dial->setInvertedAppearance(invert);
}
void SlidersGroup::invertKeyBindings(bool invert)
{
slider->setInvertedControls(invert);
scrollBar->setInvertedControls(invert);
dial->setInvertedControls(invert);
}
#ifndef WINDOW_H
#define WINDOW_H
#include <QWidget>
QT_BEGIN_NAMESPACE
class QCheckBox;
class QComboBox;
class QGroupBox;
class QLabel;
class QSpinBox;
class QStackedWidget;
QT_END_NAMESPACE
class SlidersGroup;
class Window : public QWidget
{
Q_OBJECT
public:
Window();
private:
void createControls(const QString &title);
SlidersGroup *horizontalSliders;
SlidersGroup *verticalSliders;
QStackedWidget *stackedWidget;
QGroupBox *controlsGroup;
QLabel *minimumLabel;
QLabel *maximumLabel;
QLabel *valueLabel;
QCheckBox *invertedAppearance;
QCheckBox *invertedKeyBindings;
QSpinBox *minimumSpinBox;
QSpinBox *maximumSpinBox;
QSpinBox *valueSpinBox;
QComboBox *orientationCombo;
};
#endif
#include <QtGui>
#include "slidersgroup.h"
#include "window.h"
Window::Window()
{
horizontalSliders = new SlidersGroup(Qt::Horizontal, tr("Horizontal"));
verticalSliders = new SlidersGroup(Qt::Vertical, tr("Vertical"));
stackedWidget = new QStackedWidget;
stackedWidget->addWidget(horizontalSliders);
stackedWidget->addWidget(verticalSliders);
createControls(tr("Controls"));
connect(horizontalSliders, SIGNAL(valueChanged(int)),
verticalSliders, SLOT(setValue(int)));
connect(verticalSliders, SIGNAL(valueChanged(int)),
valueSpinBox, SLOT(setValue(int)));
connect(valueSpinBox, SIGNAL(valueChanged(int)),
horizontalSliders, SLOT(setValue(int)));
QHBoxLayout *layout = new QHBoxLayout;
layout->addWidget(controlsGroup);
layout->addWidget(stackedWidget);
setLayout(layout);
minimumSpinBox->setValue(0);
maximumSpinBox->setValue(20);
valueSpinBox->setValue(5);
setWindowTitle(tr("Sliders"));
}
void Window::createControls(const QString &title)
{
controlsGroup = new QGroupBox(title);
minimumLabel = new QLabel(tr("Minimum value:"));
maximumLabel = new QLabel(tr("Maximum value:"));
valueLabel = new QLabel(tr("Current value:"));
invertedAppearance = new QCheckBox(tr("Inverted appearance"));
invertedKeyBindings = new QCheckBox(tr("Inverted key bindings"));
minimumSpinBox = new QSpinBox;
minimumSpinBox->setRange(-100, 100);
minimumSpinBox->setSingleStep(1);
maximumSpinBox = new QSpinBox;
maximumSpinBox->setRange(-100, 100);
maximumSpinBox->setSingleStep(1);
valueSpinBox = new QSpinBox;
valueSpinBox->setRange(-100, 100);
valueSpinBox->setSingleStep(1);
orientationCombo = new QComboBox;
orientationCombo->addItem(tr("Horizontal slider-like widgets"));
orientationCombo->addItem(tr("Vertical slider-like widgets"));
connect(orientationCombo, SIGNAL(activated(int)),
stackedWidget, SLOT(setCurrentIndex(int)));
connect(minimumSpinBox, SIGNAL(valueChanged(int)),
horizontalSliders, SLOT(setMinimum(int)));
connect(minimumSpinBox, SIGNAL(valueChanged(int)),
verticalSliders, SLOT(setMinimum(int)));
connect(maximumSpinBox, SIGNAL(valueChanged(int)),
horizontalSliders, SLOT(setMaximum(int)));
connect(maximumSpinBox, SIGNAL(valueChanged(int)),
verticalSliders, SLOT(setMaximum(int)));
connect(invertedAppearance, SIGNAL(toggled(bool)),
horizontalSliders, SLOT(invertAppearance(bool)));
connect(invertedAppearance, SIGNAL(toggled(bool)),
verticalSliders, SLOT(invertAppearance(bool)));
connect(invertedKeyBindings, SIGNAL(toggled(bool)),
horizontalSliders, SLOT(invertKeyBindings(bool)));
connect(invertedKeyBindings, SIGNAL(toggled(bool)),
verticalSliders, SLOT(invertKeyBindings(bool)));
QGridLayout *controlsLayout = new QGridLayout;
controlsLayout->addWidget(minimumLabel, 0, 0);
controlsLayout->addWidget(maximumLabel, 1, 0);
controlsLayout->addWidget(valueLabel, 2, 0);
controlsLayout->addWidget(minimumSpinBox, 0, 1);
controlsLayout->addWidget(maximumSpinBox, 1, 1);
controlsLayout->addWidget(valueSpinBox, 2, 1);
controlsLayout->addWidget(invertedAppearance, 0, 2);
controlsLayout->addWidget(invertedKeyBindings, 1, 2);
controlsLayout->addWidget(orientationCombo, 3, 0, 1, 3);
controlsGroup->setLayout(controlsLayout);
}
#include <QApplication>
#include "window.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
Window window;
window.show();
return app.exec();
}
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