QGIS API Documentation 3.39.0-Master (699c004a5df)
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qgsnullsymbolrendererwidget.cpp
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1/***************************************************************************
2 qgsnullsymbolrendererwidget.cpp
3 ---------------------
4 begin : November 2014
5 copyright : (C) 2014 by Nyall Dawson
6 email : nyall dot dawson at gmail dot com
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
16
18#include "qgssymbol.h"
19#include <QLayout>
20#include <QLabel>
21
26
28 : QgsRendererWidget( layer, style )
29{
30 if ( renderer )
31 {
33 }
34 if ( !mRenderer )
35 {
36 mRenderer = std::make_unique< QgsNullSymbolRenderer >();
37 if ( renderer )
39 }
40
41 QGridLayout *layout = new QGridLayout( this );
42 QLabel *label = new QLabel( tr( "No symbols will be rendered for features in this layer." ) );
43 layout->addWidget( label );
44}
45
47
Abstract base class for all 2D vector feature renderers.
void copyRendererData(QgsFeatureRenderer *destRenderer) const
Clones generic renderer data to another renderer.
Blank widget for customizing QgsNullSymbolRenderer.
~QgsNullSymbolRendererWidget() override
QgsNullSymbolRendererWidget(QgsVectorLayer *layer, QgsStyle *style, QgsFeatureRenderer *renderer)
Constructor for QgsNullSymbolRendererWidget.
std::unique_ptr< QgsNullSymbolRenderer > mRenderer
Renderer being configured by the widget.
QgsFeatureRenderer * renderer() override
Returns a pointer to the configured renderer.
static QgsRendererWidget * create(QgsVectorLayer *layer, QgsStyle *style, QgsFeatureRenderer *renderer)
Creates a new QgsNullSymbolRendererWidget object.
static QgsNullSymbolRenderer * convertFromRenderer(const QgsFeatureRenderer *renderer)
Creates a QgsNullSymbolRenderer from an existing renderer.
Base class for renderer settings widgets.
Represents a vector layer which manages a vector based data sets.