RMathComboBox.h

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#ifndef RMATHCOMBOBOX_H_
#define RMATHCOMBOBOX_H_
 
#include "gui_global.h"
 
#include <QMetaType>
#include <QComboBox>
 
#include "RSettings.h"
#include "RMath.h"
#include "RMathLineEdit.h"
 
class QCADGUI_EXPORT RMathComboBox: public QComboBox {
 
Q_OBJECT
 
// keep extra ';' in place for the benefit of ecmagenerator:
Q_PROPERTY(bool angle READ isAngle WRITE setAngle);
Q_PROPERTY(bool integer READ isInteger WRITE setInteger);
 
public:
    RMathComboBox(QWidget* parent = NULL);
 
    RMathLineEdit* getMathLineEdit() const {
        QLineEdit* le = lineEdit();
        RMathLineEdit* me = dynamic_cast<RMathLineEdit*>(le);
        Q_ASSERT(me!=NULL);
        return me;
    }
 
    bool isAngle() const {
        return getMathLineEdit()->isAngle();
    }
    void setAngle(bool on) {
        getMathLineEdit()->setAngle(on);
    }
 
    bool isScale() const {
        return getMathLineEdit()->isScale();
    }
    void setScale(bool on, RS::Unit unit) {
        getMathLineEdit()->setScale(on);
 
        if (on) {
            QStringList scales = RSettings::getScaleList(unit);
            blockSignals(true);
            addItems(scales);
            blockSignals(false);
        }
    }
 
    bool isInteger() const {
        return getMathLineEdit()->isInteger();
    }
    void setInteger(bool on) {
        getMathLineEdit()->setInteger(on);
    }
 
    void setValue(double v, int precision=6) {
        if (isScale()) {
            // find matching item:
            for (int i=0; i<count(); i++) {
                QString text = itemText(i);
                double val = RMath::parseScale(text);
                if (RMath::fuzzyCompare(val, v, 0.0001)) {
                    setEditText(text);
                    continue;
                }
            }
        }
        else {
            getMathLineEdit()->setValue(v, precision);
        }
    }
    double getValue() {
        return getMathLineEdit()->getValue();
    }
    QString getError() {
        return getMathLineEdit()->getError();
    }
    void clearError() {
        getMathLineEdit()->clearError();
    }
 
    bool isValid() {
        return getMathLineEdit()->isValid();
    }
 
    bool isSane() {
        return getMathLineEdit()->isSane();
    }
 
public slots:
    void slotTextChanged(const QString& text) {
        getMathLineEdit()->slotTextChanged(text);
    }
    void slotValueChanged(double value, const QString& error) {
        // forward signal from RMathLineEdit:
        emit valueChanged(value, error);
    }
 
signals:
    void valueChanged(double value, const QString& error);
};
 
Q_DECLARE_METATYPE(RMathComboBox*)
 
#endif