pqPresetToPixmap.h
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1 /*=========================================================================
2 
3  Program: ParaView
4  Module: pqPresetToPixmap.h
5 
6  Copyright (c) 2005,2006 Sandia Corporation, Kitware Inc.
7  All rights reserved.
8 
9  ParaView is a free software; you can redistribute it and/or modify it
10  under the terms of the ParaView license version 1.2.
11 
12  See License_v1.2.txt for the full ParaView license.
13  A copy of this license can be obtained by contacting
14  Kitware Inc.
15  28 Corporate Drive
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17  USA
18 
19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR
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25 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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31 ========================================================================*/
32 #ifndef pqPresetToPixmap_h
33 #define pqPresetToPixmap_h
34 
35 #include "pqComponentsModule.h"
36 #include <QObject>
37 #include <QScopedPointer>
38 #include <vtk_jsoncpp_fwd.h> // for forward declarations
39 
41 class vtkScalarsToColors;
42 class QPixmap;
43 class QSize;
44 
50 class PQCOMPONENTS_EXPORT pqPresetToPixmap : public QObject
51 {
52  Q_OBJECT
53  typedef QObject Superclass;
54 
55 public:
56  pqPresetToPixmap(QObject* parent = nullptr);
57  ~pqPresetToPixmap() override;
58 
62  QPixmap render(const Json::Value& preset, const QSize& resolution) const;
63 
64 protected:
68  QPixmap renderColorTransferFunction(
69  vtkScalarsToColors* stc, vtkPiecewiseFunction* pf, const QSize& resolution) const;
70 
74  QPixmap renderIndexedColorTransferFunction(
75  vtkScalarsToColors* stc, const QSize& resolution) const;
76 
77 private:
78  Q_DISABLE_COPY(pqPresetToPixmap)
79  class pqInternals;
80  QScopedPointer<pqInternals> Internals;
81 };
82 
83 #endif
#define PQCOMPONENTS_EXPORT
pqPresetToPixmap is a helper class to generate QPixmap from a color/opacity preset.
resolution