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qgsmapcoordsdialog.h
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qgsmapcoordsdialog.h
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/***************************************************************************
* Copyright (C) 2003 by Tim Sutton *
* tim@linfiniti.com *
* *
* This is a plugin generated from the QGIS plugin template *
* *
* 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 MAPCOORDSDIALOG_H
#define MAPCOORDSDIALOG_H
#include <QDialog>
#include <QMouseEvent>
#include "qgsmaptoolemitpoint.h"
#include "qgssnappingutils.h"
#include "qgspoint.h"
#include "qgsvertexmarker.h"
#include "qgsmapcanvas.h"
#include <ui_qgsmapcoordsdialogbase.h>
class QPushButton;
class QgsGeorefMapToolEmitPoint : public QgsMapTool
{
Q_OBJECT
public:
explicit QgsGeorefMapToolEmitPoint( QgsMapCanvas *canvas )
: QgsMapTool( canvas )
{
}
virtual ~QgsGeorefMapToolEmitPoint()
{
delete mSnappingMarker;
mSnappingMarker = nullptr;
}
void canvasMoveEvent(QgsMapMouseEvent *e) override
{
MappedPoint mapped = mapPoint(e);
if ( !mapped.snapped )
{
delete mSnappingMarker;
mSnappingMarker = nullptr;
}
else
{
if ( !mSnappingMarker )
{
mSnappingMarker = new QgsVertexMarker( mCanvas );
mSnappingMarker->setIconType( QgsVertexMarker::ICON_CROSS );
mSnappingMarker->setColor( Qt::magenta );
mSnappingMarker->setPenWidth( 3 );
}
mSnappingMarker->setCenter( mapped.point );
}
}
void canvasPressEvent( QgsMapMouseEvent * e ) override
{
MappedPoint mapped = mapPoint(e);
emit canvasClicked( mapped.point, e->button() );
}
void canvasReleaseEvent( QgsMapMouseEvent *e ) override
{
QgsMapTool::canvasReleaseEvent( e );
emit mouseReleased();
}
void deactivate() override
{
delete mSnappingMarker;
mSnappingMarker = 0;
QgsMapTool::deactivate();
}
signals:
void canvasClicked( const QgsPoint& point, Qt::MouseButton button );
void mouseReleased();
private:
struct MappedPoint
{
QgsPoint point;
bool snapped = false;
};
MappedPoint mapPoint(QMouseEvent *e)
{
QgsPoint pnt = toMapCoordinates( e->pos() );
QgsSnappingUtils* snappingUtils = canvas()->snappingUtils();
auto match = snappingUtils->snapToMap( pnt );
MappedPoint ret;
ret.snapped = match.isValid();
ret.point = ret.snapped ? match.point() : pnt;
return ret;
}
QgsVertexMarker* mSnappingMarker = nullptr;
};
class QgsMapCoordsDialog : public QDialog, private Ui::QgsMapCoordsDialogBase
{
Q_OBJECT
public:
QgsMapCoordsDialog( QgsMapCanvas *qgisCanvas, const QgsPoint &pixelCoords, QWidget *parent = nullptr );
~QgsMapCoordsDialog();
private slots:
void on_buttonBox_accepted();
void setToolEmitPoint( bool isEnable );
void maybeSetXY( const QgsPoint &, Qt::MouseButton );
void updateOK();
void setPrevTool();
signals:
void pointAdded( const QgsPoint &, const QgsPoint & );
private:
double dmsToDD( const QString& dms );
QPushButton *mPointFromCanvasPushButton;
QgsGeorefMapToolEmitPoint* mToolEmitPoint;
QgsMapTool* mPrevMapTool;
QgsMapCanvas* mQgisCanvas;
QgsPoint mPixelCoords;
};
#endif