qgsdoublespinbox.h

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/***************************************************************************
    qgsdoublespinbox.h
     --------------------------------------
    Date                 : 09.2014
    Copyright            : (C) 2014 Denis Rouzaud
    Email                : denis.rouzaud@gmail.com
 ***************************************************************************
 *                                                                         *
 *   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 "qgis_gui.h"
#include "qgis_sip.h"
 
#include <QDoubleSpinBox>
 
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;

    int editingTimeoutInterval() const;
 
  public slots:

    void setEditingTimeoutInterval( int timeout );
 
  signals:

    void returnPressed();

    void textEdited( const QString &text );

    void editingTimeout( double value );
 
  protected:
    void changeEvent( QEvent *event ) override;
    void wheelEvent( QWheelEvent *event ) override;
    void focusOutEvent( QFocusEvent *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 );
    void onLastEditTimeout();
 
  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;
 
    QTimer *mLastEditTimer = nullptr;
    double mLastEditTimeoutValue = std::numeric_limits<double>::quiet_NaN();
 
    QString stripped( const QString &originalText ) const;
 
    friend class TestQgsRangeWidgetWrapper;
};
 
#endif // QGSDOUBLESPINBOX_H