valuedial.h

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// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel                                                   //
//                                                                               //
// This program is free software; you can redistribute it and/or modify          //
// it under the terms of the GNU General Public License as published by          //
// the Free Software Foundation as version 3 of the License, or                  //
// (at your option) any later version.                                           //
//                                                                               //
// 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 General Public License V3 for more details.                               //
//                                                                               //
// You should have received a copy of the GNU General Public License             //
// along with this program. If not, see <http://www.gnu.org/licenses/>.          //

#include <QWidget>
#include <QTimer>
#include "gui/colormapper.h"
#include "export.h"

class SDRGUI_API ValueDial : public QWidget {
    Q_OBJECT

public:
    ValueDial(QWidget* parent = NULL, ColorMapper colorMapper = ColorMapper(ColorMapper::Normal));

    void setValue(quint64 value);
    void setValueRange(uint numDigits, quint64 min, quint64 max);
    void setFont(const QFont& font);
    void setBold(bool bold);
    void setColorMapper(ColorMapper colorMapper);
    quint64 getValue() const { return m_value; }
    quint64 getValueNew() const { return m_valueNew; }

signals:
    void changed(quint64 value);

private:
    QLinearGradient m_background;
    int m_numDigits;
    int m_numDecimalPoints;
    int m_digitWidth;
    int m_digitHeight;
    int m_hightlightedDigit;
    int m_cursor;
    bool m_cursorState;
    quint64 m_value;
    quint64 m_valueMax;
    quint64 m_valueMin;
    QString m_text;

    quint64 m_valueNew;
    QString m_textNew;
    int m_animationState;
    QTimer m_animationTimer;
    QTimer m_blinkTimer;
    QChar m_groupSeparator;

    ColorMapper m_colorMapper;

    quint64 findExponent(int digit);
    QChar digitNeigh(QChar c, bool dir);
    QString formatText(quint64 value);

    void paintEvent(QPaintEvent*);

    void mousePressEvent(QMouseEvent*);
    void mouseMoveEvent(QMouseEvent*);
    void wheelEvent(QWheelEvent*);
    void leaveEvent(QEvent*);
    void keyPressEvent(QKeyEvent*);
    void focusInEvent(QFocusEvent*);
    void focusOutEvent(QFocusEvent*);

private slots:
    void animate();
    void blink();
};