qgselevationcontrollerwidget.h

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/***************************************************************************
                          qgselevationcontrollerwidget.h
                          ---------------
    begin                : March 2024
    copyright            : (C) 2024 by Nyall Dawson
    email                : nyall dot dawson at gmail dot 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 QGSELEVATIONCONTROLLERWIDGET_H
#define QGSELEVATIONCONTROLLERWIDGET_H
 
#include "qgis_gui.h"
#include "qgis_sip.h"
#include "qgsrange.h"
 
#include <QPointer>
#include <QWidget>
#include <QWidgetAction>
 
class QgsMapCanvas;
class QgsMapLayer;
class QgsRangeSlider;
class QgsDoubleSpinBox;
class QToolButton;
class QMenu;

 
class GUI_EXPORT QgsElevationControllerLabels : public QWidget SIP_SKIP
{
    Q_OBJECT
 
  public:
    QgsElevationControllerLabels( QWidget *parent SIP_TRANSFERTHIS = nullptr );
 
    void paintEvent( QPaintEvent *event ) override;
 
    void setLimits( const QgsDoubleRange &limits );
    void setRange( const QgsDoubleRange &range );
    void setInverted( bool inverted );
    void setSignificantElevations( const QList<double> &elevations );
 
  private:
    QgsDoubleRange mLimits;
    QgsDoubleRange mRange;
    bool mInverted = false;
    QList<double> mSignificantElevations;
};
 
class GUI_EXPORT QgsElevationControllerSettingsAction : public QWidgetAction SIP_SKIP
{
    Q_OBJECT
 
  public:
    QgsElevationControllerSettingsAction( QWidget *parent = nullptr );

    QMenu *limitsMenu();

    void setLimits( const QgsDoubleRange &limits );

    void setFixedRangeSize( double size );

    void updateRangeSize( double size );
 
  signals:

    void limitsChanged( const QgsDoubleRange &limits );

    void fixedRangeSizeChanged( double size );

    void fullRangeRequested();
 
  protected:
    bool eventFilter( QObject *watched, QEvent *event ) override;
 
  private:
    void onHover();
 
    QMenu *mMenu = nullptr;
    bool mSuppressRecurse = false;
    QgsDoubleSpinBox *mLowerSpin = nullptr;
    QgsDoubleSpinBox *mUpperSpin = nullptr;
    QToolButton *mLimitsButton = nullptr;
    QMenu *mLimitsMenu = nullptr;
    QgsDoubleSpinBox *mSizeSpin = nullptr;
    QToolButton *mLockButton = nullptr;
};
 


class GUI_EXPORT QgsElevationControllerWidget : public QWidget
{
#ifdef SIP_RUN
    SIP_CONVERT_TO_SUBCLASS_CODE
    if ( qobject_cast<QgsElevationControllerWidget *>( sipCpp ) != nullptr )
      sipType = sipType_QgsElevationControllerWidget;
    else
      sipType = nullptr;
    SIP_END
#endif
 
    Q_OBJECT
 
  public:
    QgsElevationControllerWidget( QWidget *parent SIP_TRANSFERTHIS = nullptr );
 
    void resizeEvent( QResizeEvent *event ) override;

    QgsDoubleRange range() const;

    QgsDoubleRange rangeLimits() const;

    QgsRangeSlider *slider();

    QMenu *menu();

    QgsMapCanvas *mapCanvas() const;

    double fixedRangeSize() const;
 
  public slots:

    void setRange( const QgsDoubleRange &range );

    void setRangeLimits( const QgsDoubleRange &limits );

    void setFixedRangeSize( double size );

    void setInverted( bool inverted );

    void setSignificantElevations( const QList<double> &elevations );

    void setMapCanvas( QgsMapCanvas *canvas );
 
  signals:

    void rangeChanged( const QgsDoubleRange &range );

    void fixedRangeSizeChanged( double size );

    void invertedChanged( bool inverted );
 
  private:
    void updateWidgetMask();

    void setLimitsFromRange( const QgsDoubleRange &range );

    void setLimitsFromLayers( const QList<QgsMapLayer *> &layers );
 
    static bool layerHasElevation( QgsMapLayer *layer );

    QgsDoubleRange snappedRange( const QgsDoubleRange &range ) const;

    double snapValue( double value ) const;

    QgsDoubleRange sliderRange() const;

    QgsDoubleRange fixedSizeRangeFrom( double lower ) const;
 
    QToolButton *mConfigureButton = nullptr;
    QgsElevationControllerSettingsAction *mSettingsAction = nullptr;
    QMenu *mMenu = nullptr;
    QAction *mInvertDirectionAction = nullptr;
    QgsRangeSlider *mSlider = nullptr;
    QgsElevationControllerLabels *mSliderLabels = nullptr;
    QPointer<QgsMapCanvas> mMapCanvas;
    QgsDoubleRange mRangeLimits;
    QgsDoubleRange mCurrentRange;
    QList<double> mSignificantElevations;
    double mSnapInterval = 0;
    int mSnapDecimals = 0;
    double mFixedRangeSize = -1;
    int mBlockSliderChanges = 0;
    double mSliderPrecision = 100;
};
 
#endif // QGSELEVATIONCONTROLLERWIDGET_H