controlpanel.h

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#ifndef CONTROLPANEL_H
#define CONTROLPANEL_H

#include <QLineEdit>
#include <QSlider>
#include <QDoubleValidator>
#include <QSettings>

#include <types.h>
#include <interval.h>
#include <k_frechet/kalgorithm.h>

#include "ui_controlpanel.h"

namespace frechet { namespace view {
class ControlPanel: public QWidget
{
    Q_OBJECT     
    Q_PROPERTY(double epsilon READ getEpsilon WRITE setEpsilonWithNotify)

public:
    ControlPanel(QWidget* parent=0);

    double getEpsilon() { return eps; }
    //  @see FrechetViewApplication::Algorithm

    void saveSettings(QSettings& settings, QString group);
    void restoreSettings(QSettings& settings, QString group);

signals:
    void epsilonChanged(double eps);

    void showGreedyResult();
    void showOptimalResult();
    void hideResult();

public slots:
    void lockInput(bool) { /*TODO*/ }

    void onEdit();
    void onSlider(int value);
    void onAlgorithmChanged(int algorithm);

    void onGreedyButton();
    void onBFButton();

    void setEpsilon(double eps, bool notify);
    void setEpsilonWithoutNotify(double eps) { setEpsilon(eps,false);}
    void setEpsilonWithNotify(double eps)    { setEpsilon(eps,true);}
    void setEpsilonMax(double eps_max);

    void updateResults();
    void clearResults();

    void updatePolyResult();

    void onShowBounds(bool);

    void onCurveFinished(bool);

private:
    void updateGreedyResult(const k::kAlgorithm::Greedy& kalg);
    void updateGreedyResult(k::kAlgorithm::Result k1, k::kAlgorithm::Result k2);

    void updateOptimalResult(const k::kAlgorithm::BruteForce& bfres);
    void updateOptimalResult(k::kAlgorithm::Result kres);

private:
    static const int DECIMALS;

    double eps;
    QLocale locale;
    QDoubleValidator* epsValidator;
    double eps_step;

    Ui::ControlPanel ui;

    QString toString(double x);
    double toDouble(QString text);

    int toSliderValue(double x);
    double fromSliderValue(int i);

    void showIcon(QLabel* label, int status);
    void setIcon(QLabel* label, QString text, QString tooltip="");

    static QMovie* loaderMovie;
    QLabel* movieLabel;
    bool curve_was_ok;

    static QString POLY_STATUS [];

protected:
    void wheelEvent(QWheelEvent *) override;
    void keyPressEvent(QKeyEvent *event) override;
};
void singleStep(QAbstractSlider*, double factor);
void pageStep(QAbstractSlider*, double factor);

} } // namespace

#endif // CONTROLPANEL_H