QGIS API Documentation 3.27.0-Master (9c08adf5ef)
qgsannotationlayerrenderer.h
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1/***************************************************************************
2 qgsannotationlayerrenderer.h
3 ----------------
4 copyright : (C) 2019 by Sandro Mani
5 email : smani at sourcepole dot ch
6 ***************************************************************************/
7
8/***************************************************************************
9 * *
10 * This program is free software; you can redistribute it and/or modify *
11 * it under the terms of the GNU General Public License as published by *
12 * the Free Software Foundation; either version 2 of the License, or *
13 * (at your option) any later version. *
14 * *
15 ***************************************************************************/
16
17#ifndef QGSANNOTATIONLAYERRENDERER_H
18#define QGSANNOTATIONLAYERRENDERER_H
19
20#define SIP_NO_FILE
21
22#include "qgis_core.h"
23#include "qgis_sip.h"
24#include "qgsmaplayerrenderer.h"
25#include "qgsannotationitem.h"
26#include <tuple>
27#include <vector>
28#include <memory>
29
31class QgsPaintEffect;
32
41{
42 public:
43
49 QgsFeedback *feedback() const override;
50 bool render() override;
51 bool forceRasterRender() const override;
52
53 private:
54 std::vector < std::pair< QString, std::unique_ptr< QgsAnnotationItem > > > mItems;
55 std::unique_ptr< QgsFeedback > mFeedback;
56 double mLayerOpacity = 1.0;
57 std::unique_ptr< QgsPaintEffect > mPaintEffect;
58
59};
60
61#endif // QGSANNOTATIONLAYERRENDERER_H
Implementation of threaded rendering for annotation layers.
~QgsAnnotationLayerRenderer() override
Represents a map layer containing a set of georeferenced annotations, e.g.
Base class for feedback objects to be used for cancellation of something running in a worker thread.
Definition: qgsfeedback.h:45
Base class for utility classes that encapsulate information necessary for rendering of map layers.
virtual bool render()=0
Do the rendering (based on data stored in the class).
virtual bool forceRasterRender() const
Returns true if the renderer must be rendered to a raster paint device (e.g.
virtual QgsFeedback * feedback() const
Access to feedback object of the layer renderer (may be nullptr)
Base class for visual effects which can be applied to QPicture drawings.
Contains information about the context of a rendering operation.