qgsdoublespinbox.h

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/***************************************************************************
    qgsdoublespinbox.h
     --------------------------------------
    Date                 : 09.2014
    Copyright            : (C) 2014 Denis Rouzaud
    Email                : [email protected]
 ***************************************************************************
 *                                                                         *
 *   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; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSDOUBLESPINBOX_H
#define QGSDOUBLESPINBOX_H
 
#include <QDoubleSpinBox>
#include "qgis_sip.h"
#include "qgis_gui.h"
 
class QgsSpinBoxLineEdit;
 
 
#ifdef SIP_RUN
% ModuleHeaderCode
// fix to allow compilation with sip that for some reason
// doesn't add this include to the file where the code from
// ConvertToSubClassCode goes.
#include <qgsdoublespinbox.h>
% End
#endif
 
 
class GUI_EXPORT QgsDoubleSpinBox : public QDoubleSpinBox
{
 
#ifdef SIP_RUN
    SIP_CONVERT_TO_SUBCLASS_CODE
    if ( qobject_cast<QgsDoubleSpinBox *>( sipCpp ) )
      sipType = sipType_QgsDoubleSpinBox;
    else
      sipType = NULL;
    SIP_END
#endif
 
    Q_OBJECT
    Q_PROPERTY( bool showClearButton READ showClearButton WRITE setShowClearButton )
    Q_PROPERTY( bool clearValue READ clearValue WRITE setClearValue )
    Q_PROPERTY( bool expressionsEnabled READ expressionsEnabled WRITE setExpressionsEnabled )
 
  public:
 
    enum ClearValueMode
    {
      MinimumValue, 
      MaximumValue, 
      CustomValue, 
    };
 
    explicit QgsDoubleSpinBox( QWidget *parent SIP_TRANSFERTHIS = nullptr );
 
    void setShowClearButton( bool showClearButton );
 
    bool showClearButton() const {return mShowClearButton;}
 
    void setExpressionsEnabled( bool enabled );
 
    bool expressionsEnabled() const {return mExpressionsEnabled;}
 
    void clear() override;
 
    void setClearValue( double customValue, const QString &clearValueText = QString() );
 
    void setClearValueMode( ClearValueMode mode, const QString &clearValueText = QString() );
 
    double clearValue() const;
 
    bool isCleared() const;
 
    void setLineEditAlignment( Qt::Alignment alignment );
 
    void setSpecialValueText( const QString &txt );
 
    double valueFromText( const QString &text ) const override;
    QValidator::State validate( QString &input, int &pos ) const override;
    void paintEvent( QPaintEvent *e ) override;
    void stepBy( int steps ) override;
 
  signals:
 
    void returnPressed();
 
    void textEdited( const QString &text );
 
  protected:
    void changeEvent( QEvent *event ) override;
    void wheelEvent( QWheelEvent *event ) override;
    // This is required because private implementation of
    // QAbstractSpinBoxPrivate may trigger a second
    // undesired event from the auto-repeat mouse timer
    void timerEvent( QTimerEvent *event ) override;
 
  private slots:
    void changed( double value );
 
  private:
    int frameWidth() const;
    bool shouldShowClearForValue( double value ) const;
 
    QgsSpinBoxLineEdit *mLineEdit = nullptr;
 
    bool mShowClearButton = true;
    ClearValueMode mClearValueMode = MinimumValue;
    double mCustomClearValue = 0.0;
 
    bool mExpressionsEnabled = true;
 
    QString stripped( const QString &originalText ) const;
 
    friend class TestQgsRangeWidgetWrapper;
};
 
#endif // QGSDOUBLESPINBOX_H