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qtgradientstopsmodel.h

/****************************************************************************
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef QTGRADIENTSTOPSMODEL_H
#define QTGRADIENTSTOPSMODEL_H

#include <QObject>
#include <QMap>

class QColor;

namespace qdesigner_internal {

class QtGradientStopsModel;

class QtGradientStop
{
public:
    qreal position() const;
    QColor color() const;
    QtGradientStopsModel *gradientModel() const;

private:
    void setColor(const QColor &color);
    void setPosition(qreal position);
    friend class QtGradientStopsModel;
    QtGradientStop(QtGradientStopsModel *model = 0);
    ~QtGradientStop();
    class QtGradientStopPrivate *d_ptr;
};

class QtGradientStopsModel : public QObject
{
    Q_OBJECT
public:
    QtGradientStopsModel(QObject *parent = 0);
    ~QtGradientStopsModel();

    QMap<qreal, QtGradientStop *> stops() const;
    QtGradientStop *at(qreal pos) const;
    QColor color(qreal pos) const; // calculated between points
    QList<QtGradientStop *> selectedStops() const;
    QtGradientStop *currentStop() const;
    bool isSelected(QtGradientStop *stop) const;
    QtGradientStop *firstSelected() const;
    QtGradientStop *lastSelected() const;

    QtGradientStop *addStop(qreal pos, const QColor &color);
    void removeStop(QtGradientStop *stop);
    void moveStop(QtGradientStop *stop, qreal newPos);
    void changeStop(QtGradientStop *stop, const QColor &newColor);
    void selectStop(QtGradientStop *stop, bool select);
    void setCurrentStop(QtGradientStop *stop);

    void moveStops(double newPosition); // moves current stop to newPos and all selected stops are moved accordingly
    void clear();
    void clearSelection();
    void selectAll();
    void deleteStops();

signals:
    void stopAdded(QtGradientStop *stop);
    void stopRemoved(QtGradientStop *stop);
    void stopMoved(QtGradientStop *stop, qreal newPos);
    void stopChanged(QtGradientStop *stop, const QColor &newColor);
    void stopSelected(QtGradientStop *stop, bool selected);
    void currentStopChanged(QtGradientStop *stop);

private:
    class QtGradientStopsModelPrivate *d_ptr;
    Q_DECLARE_PRIVATE(QtGradientStopsModel)
    Q_DISABLE_COPY(QtGradientStopsModel)
};

}

#endif

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