qgslayoutscalebarwidget.h

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/***************************************************************************
                            qgslayoutscalebarwidget.h
                            ---------------------------
    begin                : 11 June 2008
    copyright            : (C) 2008 by Marco Hugentobler
    email                : marco dot hugentobler at karto dot baug dot ethz dot ch
 ***************************************************************************/
/***************************************************************************
 *                                                                         *
 *   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 QGSLAYOUTSCALEBARWIDGET_H
#define QGSLAYOUTSCALEBARWIDGET_H
 
// We don't want to expose this in the public API
 
#include "ui_qgslayoutscalebarwidgetbase.h"
 
#include "qgis_gui.h"
#include "qgslayoutitemwidget.h"
 
#include <QButtonGroup>
 
#define SIP_NO_FILE
 
class QgsLayoutItemScaleBar;

class GUI_EXPORT QgsLayoutScaleBarWidget : public QgsLayoutItemBaseWidget, public QgsExpressionContextGenerator, private Ui::QgsLayoutScaleBarWidgetBase
{
    Q_OBJECT
 
  public:
    explicit QgsLayoutScaleBarWidget( QgsLayoutItemScaleBar *scaleBar );
    void setMasterLayout( QgsMasterLayoutInterface *masterLayout ) override;
 
    QgsExpressionContext createExpressionContext() const override;
 
  protected:
    bool setNewItem( QgsLayoutItem *item ) override;
 
  private slots:
    void lineSymbolChanged();
    void divisionSymbolChanged();
    void subdivisionSymbolChanged();
    void fillSymbol1Changed();
    void fillSymbol2Changed();
    void mHeightSpinBox_valueChanged( double d );
    void mSegmentSizeSpinBox_valueChanged( double d );
    void mSegmentsLeftSpinBox_valueChanged( int i );
    void mNumberOfSegmentsSpinBox_valueChanged( int i );
    void mNumberOfSubdivisionsSpinBox_valueChanged( int i );
    void mSubdivisionsHeightSpinBox_valueChanged( double d );
    void mUnitLabelLineEdit_textChanged( const QString &text );
    void mMapUnitsPerBarUnitSpinBox_valueChanged( double d );
    void mStyleComboBox_currentIndexChanged( const QString &text );
    void mLabelBarSpaceSpinBox_valueChanged( double d );
    void mBoxSizeSpinBox_valueChanged( double d );
    void mDistanceLabelPlacementComboBox_currentIndexChanged( int index );
    void alignmentChanged();
    void mUnitsComboBox_currentIndexChanged( int index );
    void mMinWidthSpinBox_valueChanged( double d );
    void mMaxWidthSpinBox_valueChanged( double d );
    void labelUnitPlacementChanged();
 
  private slots:
    void setGuiElements();
    void segmentSizeRadioChanged( QAbstractButton *radio );
    void mapChanged( QgsLayoutItem *item );
    void textFormatChanged();
    void changeNumberFormat();
 
  private:
    enum class DistanceLabelPlacement : int
    {
      CenteredAboveSegmentEdges,
      CenteredAboveSegmentCenters,
      CenteredBelowSegmentEdges,
      CenteredBelowSegmentCenters,
    };
    static DistanceLabelPlacement distanceLabelPlacement( Qgis::ScaleBarDistanceLabelHorizontalPlacement horizontalPlacement, Qgis::ScaleBarDistanceLabelVerticalPlacement verticalPlacement );
 
    QPointer<QgsLayoutItemScaleBar> mScalebar;
    QgsLayoutItemPropertiesWidget *mItemPropertiesWidget = nullptr;
 
    QButtonGroup mSegmentSizeRadioGroup;

    void blockMemberSignals( bool enable );

    void toggleStyleSpecificControls( const QString &style );
 
    void connectUpdateSignal();
    void disconnectUpdateSignal();
    void populateDataDefinedButtons();
 
    static QString linkedMapUnitsString( QgsLayoutItemScaleBar *scalebar );
};
 
#endif //QGSLAYOUTSCALEBARWIDGET_H