src/gui/widgets/qabstractslider.h
author Alex Gilkes <alex.gilkes@nokia.com>
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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QABSTRACTSLIDER_H
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#define QABSTRACTSLIDER_H
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#include <QtGui/qwidget.h>
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(Gui)
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class QAbstractSliderPrivate;
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class Q_GUI_EXPORT QAbstractSlider : public QWidget
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{
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    Q_OBJECT
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    Q_PROPERTY(int minimum READ minimum WRITE setMinimum)
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    Q_PROPERTY(int maximum READ maximum WRITE setMaximum)
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    Q_PROPERTY(int singleStep READ singleStep WRITE setSingleStep)
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    Q_PROPERTY(int pageStep READ pageStep WRITE setPageStep)
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    Q_PROPERTY(int value READ value WRITE setValue NOTIFY valueChanged USER true)
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    Q_PROPERTY(int sliderPosition READ sliderPosition WRITE setSliderPosition NOTIFY sliderMoved)
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    Q_PROPERTY(bool tracking READ hasTracking WRITE setTracking)
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    Q_PROPERTY(Qt::Orientation orientation READ orientation WRITE setOrientation)
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    Q_PROPERTY(bool invertedAppearance READ invertedAppearance WRITE setInvertedAppearance)
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    Q_PROPERTY(bool invertedControls READ invertedControls WRITE setInvertedControls)
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    Q_PROPERTY(bool sliderDown READ isSliderDown WRITE setSliderDown DESIGNABLE false)
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public:
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    explicit QAbstractSlider(QWidget *parent=0);
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    ~QAbstractSlider();
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    Qt::Orientation orientation() const;
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    void setMinimum(int);
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    int minimum() const;
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    void setMaximum(int);
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    int maximum() const;
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    void setRange(int min, int max);
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    void setSingleStep(int);
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    int singleStep() const;
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    void setPageStep(int);
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    int pageStep() const;
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    void setTracking(bool enable);
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    bool hasTracking() const;
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    void setSliderDown(bool);
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    bool isSliderDown() const;
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    void setSliderPosition(int);
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    int sliderPosition() const;
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    void setInvertedAppearance(bool);
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    bool invertedAppearance() const;
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    void setInvertedControls(bool);
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    bool invertedControls() const;
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    enum SliderAction {
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        SliderNoAction,
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        SliderSingleStepAdd,
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        SliderSingleStepSub,
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        SliderPageStepAdd,
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        SliderPageStepSub,
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        SliderToMinimum,
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        SliderToMaximum,
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        SliderMove
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    };
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    int value() const;
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    void triggerAction(SliderAction action);
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public Q_SLOTS:
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    void setValue(int);
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    void setOrientation(Qt::Orientation);
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Q_SIGNALS:
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    void valueChanged(int value);
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    void sliderPressed();
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    void sliderMoved(int position);
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    void sliderReleased();
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    void rangeChanged(int min, int max);
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    void actionTriggered(int action);
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protected:
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    bool event(QEvent *e);
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    void setRepeatAction(SliderAction action, int thresholdTime = 500, int repeatTime = 50);
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    SliderAction repeatAction() const;
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    enum SliderChange {
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        SliderRangeChange,
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        SliderOrientationChange,
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        SliderStepsChange,
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        SliderValueChange
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    };
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    virtual void sliderChange(SliderChange change);
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    void keyPressEvent(QKeyEvent *ev);
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    void timerEvent(QTimerEvent *);
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#ifndef QT_NO_WHEELEVENT
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    void wheelEvent(QWheelEvent *e);
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#endif
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    void changeEvent(QEvent *e);
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#ifdef QT3_SUPPORT
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public:
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    inline QT3_SUPPORT int minValue() const { return minimum(); }
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    inline QT3_SUPPORT int maxValue() const { return maximum(); }
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    inline QT3_SUPPORT int lineStep() const { return singleStep(); }
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    inline QT3_SUPPORT void setMinValue(int v) { setMinimum(v); }
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    inline QT3_SUPPORT void setMaxValue(int v) { setMaximum(v); }
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    inline QT3_SUPPORT void setLineStep(int v) { setSingleStep(v); }
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    inline QT3_SUPPORT void setSteps(int single, int page) { setSingleStep(single); setPageStep(page); }
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    inline QT3_SUPPORT void addPage() { triggerAction(SliderPageStepAdd); }
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    inline QT3_SUPPORT void subtractPage() { triggerAction(SliderPageStepSub); }
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    inline QT3_SUPPORT void addLine() { triggerAction(SliderSingleStepAdd); }
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    inline QT3_SUPPORT void subtractLine() { triggerAction(SliderSingleStepSub); }
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#endif
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protected:
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    QAbstractSlider(QAbstractSliderPrivate &dd, QWidget *parent=0);
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private:
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    Q_DISABLE_COPY(QAbstractSlider)
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    Q_DECLARE_PRIVATE(QAbstractSlider)
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};
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif // QABSTRACTSLIDER_H