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4da1ce8404
Run clang-tidy modernize-use-override to remove all the redundant virtual keywords from overridden methods, and add some missing overrides. Another benefit is that this has also added the overrides on destructors, which will cause a build failure if a base class is missing a virtual destructor.
138 lines
4.3 KiB
C++
138 lines
4.3 KiB
C++
/***************************************************************************
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qgshighlight.h - widget to highlight geometries
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--------------------------------------
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Date : 02-Mar-2011
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Copyright : (C) 2011 by Juergen E. Fischer, norBIT GmbH
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Email : jef at norbit dot de
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef QGSHIGHLIGHT_H
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#define QGSHIGHLIGHT_H
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#include "qgsmapcanvasitem.h"
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#include "qgsgeometry.h"
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#include "qgssymbol.h"
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#include <QBrush>
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#include <QColor>
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#include <QList>
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#include <QPen>
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#include <QPainter>
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#include <QPainterPath>
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#include "qgis_gui.h"
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class QgsMapLayer;
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class QgsVectorLayer;
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class QgsSymbol;
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/**
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* \ingroup gui
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* A class for highlight features on the map.
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*
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* The QgsHighlight class provides a transparent overlay canvas item
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* for highlighting features or geometries on a map canvas.
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*
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* \code{.py}
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* color = QColor(Qt.red)
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* highlight = QgsHighlight(mapCanvas, feature, layer)
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* highlight.setColor(color)
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* color.setAlpha(50)
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* highlight.setFillColor(color)
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* highlight.show()
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* \endcode
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*/
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class GUI_EXPORT QgsHighlight: public QgsMapCanvasItem
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{
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public:
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/**
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* Constructor for QgsHighlight
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* \param mapCanvas associated map canvas
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* \param geom initial geometry of highlight
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* \param layer associated map layer
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*/
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QgsHighlight( QgsMapCanvas *mapCanvas, const QgsGeometry &geom, QgsMapLayer *layer );
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/**
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* Constructor for highlighting true feature shape using feature attributes
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* and renderer.
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* \param mapCanvas map canvas
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* \param feature
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* \param layer vector layer
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*/
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QgsHighlight( QgsMapCanvas *mapCanvas, const QgsFeature &feature, QgsVectorLayer *layer );
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~QgsHighlight() override;
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/**
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* Set line/stroke to color, polygon fill to color with alpha = 63.
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* This is legacy function, use setFillColor() after setColor() if different fill color is required. */
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void setColor( const QColor &color );
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/**
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* Fill color for the highlight.
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* Will be used for polygons and points.
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*
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* \since QGIS 2.4
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*/
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void setFillColor( const QColor &fillColor );
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/**
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* Set stroke width.
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*
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* \note Ignored in feature mode.
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*/
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void setWidth( int width );
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/**
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* Set line / stroke buffer in millimeters.
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*
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* \since QGIS 2.4
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*/
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void setBuffer( double buffer ) { mBuffer = buffer; }
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/**
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* Set minimum line / stroke width in millimeters.
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*
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* \since QGIS 2.4
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*/
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void setMinWidth( double width ) { mMinWidth = width; }
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/**
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* Return the layer for which this highlight has been created.
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*/
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QgsMapLayer *layer() const { return mLayer; }
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void updatePosition() override;
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protected:
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void paint( QPainter *p ) override;
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//! recalculates needed rectangle
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void updateRect();
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private:
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void init();
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void setSymbol( QgsSymbol *symbol, const QgsRenderContext &context, const QColor &color, const QColor &fillColor );
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double getSymbolWidth( const QgsRenderContext &context, double width, QgsUnitTypes::RenderUnit unit );
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//! Get renderer for current color mode and colors. The renderer should be freed by caller.
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std::unique_ptr< QgsFeatureRenderer > createRenderer( QgsRenderContext &context, const QColor &color, const QColor &fillColor );
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void paintPoint( QPainter *p, const QgsPointXY &point );
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void paintLine( QPainter *p, QgsPolylineXY line );
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void paintPolygon( QPainter *p, const QgsPolygonXY &polygon );
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QBrush mBrush;
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QPen mPen;
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QgsGeometry *mGeometry = nullptr;
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QgsMapLayer *mLayer = nullptr;
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QgsFeature mFeature;
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double mBuffer = 0; // line / stroke buffer in pixels
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double mMinWidth = 0; // line / stroke minimum width in pixels
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};
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#endif
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