QGIS API Documentation  3.6.0-Noosa (5873452)
qgspainting.cpp
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1 /***************************************************************************
2  qgspainting.cpp
3  ---------------------
4  begin : July 2016
5  copyright : (C) 2016 by Martin Dobias
6  email : wonder dot sk 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  ***************************************************************************/
15 
16 #include "qgspainting.h"
17 
18 #include "qgslogger.h"
19 
20 QPainter::CompositionMode QgsPainting::getCompositionMode( QgsPainting::BlendMode blendMode )
21 {
22  // Map QgsPainting::BlendNormal to QPainter::CompositionMode
23  switch ( blendMode )
24  {
25  case QgsPainting::BlendNormal:
26  return QPainter::CompositionMode_SourceOver;
27  case QgsPainting::BlendLighten:
28  return QPainter::CompositionMode_Lighten;
29  case QgsPainting::BlendScreen:
30  return QPainter::CompositionMode_Screen;
31  case QgsPainting::BlendDodge:
32  return QPainter::CompositionMode_ColorDodge;
33  case QgsPainting::BlendAddition:
34  return QPainter::CompositionMode_Plus;
35  case QgsPainting::BlendDarken:
36  return QPainter::CompositionMode_Darken;
37  case QgsPainting::BlendMultiply:
38  return QPainter::CompositionMode_Multiply;
39  case QgsPainting::BlendBurn:
40  return QPainter::CompositionMode_ColorBurn;
41  case QgsPainting::BlendOverlay:
42  return QPainter::CompositionMode_Overlay;
43  case QgsPainting::BlendSoftLight:
44  return QPainter::CompositionMode_SoftLight;
45  case QgsPainting::BlendHardLight:
46  return QPainter::CompositionMode_HardLight;
47  case QgsPainting::BlendDifference:
48  return QPainter::CompositionMode_Difference;
49  case QgsPainting::BlendSubtract:
50  return QPainter::CompositionMode_Exclusion;
51  case QgsPainting::BlendSource:
52  return QPainter::CompositionMode_Source;
53  case QgsPainting::BlendDestinationOver:
54  return QPainter::CompositionMode_DestinationOver;
55  case QgsPainting::BlendClear:
56  return QPainter::CompositionMode_Clear;
57  case QgsPainting::BlendDestination:
58  return QPainter::CompositionMode_Destination;
59  case QgsPainting::BlendSourceIn:
60  return QPainter::CompositionMode_SourceIn;
61  case QgsPainting::BlendDestinationIn:
62  return QPainter::CompositionMode_DestinationIn;
63  case QgsPainting::BlendSourceOut:
64  return QPainter::CompositionMode_SourceOut;
65  case QgsPainting::BlendDestinationOut:
66  return QPainter::CompositionMode_DestinationOut;
67  case QgsPainting::BlendSourceAtop:
68  return QPainter::CompositionMode_SourceAtop;
69  case QgsPainting::BlendDestinationAtop:
70  return QPainter::CompositionMode_DestinationAtop;
71  case QgsPainting::BlendXor:
72  return QPainter::CompositionMode_Xor;
73  default:
74  QgsDebugMsg( QStringLiteral( "Blend mode %1 mapped to SourceOver" ).arg( blendMode ) );
75  return QPainter::CompositionMode_SourceOver;
76  }
77 }
78 
79 
80 QgsPainting::BlendMode QgsPainting::getBlendModeEnum( QPainter::CompositionMode blendMode )
81 {
82  // Map QPainter::CompositionMode to QgsPainting::BlendNormal
83  switch ( blendMode )
84  {
85  case QPainter::CompositionMode_SourceOver:
86  return QgsPainting::BlendNormal;
87  case QPainter::CompositionMode_Lighten:
88  return QgsPainting::BlendLighten;
89  case QPainter::CompositionMode_Screen:
90  return QgsPainting::BlendScreen;
91  case QPainter::CompositionMode_ColorDodge:
92  return QgsPainting::BlendDodge;
93  case QPainter::CompositionMode_Plus:
94  return QgsPainting::BlendAddition;
95  case QPainter::CompositionMode_Darken:
96  return QgsPainting::BlendDarken;
97  case QPainter::CompositionMode_Multiply:
98  return QgsPainting::BlendMultiply;
99  case QPainter::CompositionMode_ColorBurn:
100  return QgsPainting::BlendBurn;
101  case QPainter::CompositionMode_Overlay:
102  return QgsPainting::BlendOverlay;
103  case QPainter::CompositionMode_SoftLight:
104  return QgsPainting::BlendSoftLight;
105  case QPainter::CompositionMode_HardLight:
106  return QgsPainting::BlendHardLight;
107  case QPainter::CompositionMode_Difference:
108  return QgsPainting::BlendDifference;
109  case QPainter::CompositionMode_Exclusion:
110  return QgsPainting::BlendSubtract;
111  case QPainter::CompositionMode_Source:
112  return QgsPainting::BlendSource;
113  case QPainter::CompositionMode_DestinationOver:
114  return QgsPainting::BlendDestinationOver;
115  case QPainter::CompositionMode_Clear:
116  return QgsPainting::BlendClear;
117  case QPainter::CompositionMode_Destination:
118  return QgsPainting::BlendDestination;
119  case QPainter::CompositionMode_SourceIn:
120  return QgsPainting::BlendSourceIn;
121  case QPainter::CompositionMode_DestinationIn:
122  return QgsPainting::BlendDestinationIn;
123  case QPainter::CompositionMode_SourceOut:
124  return QgsPainting::BlendSourceOut;
125  case QPainter::CompositionMode_DestinationOut:
126  return QgsPainting::BlendDestinationOut;
127  case QPainter::CompositionMode_SourceAtop:
128  return QgsPainting::BlendSourceAtop;
129  case QPainter::CompositionMode_DestinationAtop:
130  return QgsPainting::BlendDestinationAtop;
131  case QPainter::CompositionMode_Xor:
132  return QgsPainting::BlendXor;
133  default:
134  QgsDebugMsg( QStringLiteral( "Composition mode %1 mapped to Normal" ).arg( blendMode ) );
135  return QgsPainting::BlendNormal;
136  }
137 }
QgsDebugMsg
#define QgsDebugMsg(str)
Definition: qgslogger.h:38
QgsPainting::getBlendModeEnum
static QgsPainting::BlendMode getBlendModeEnum(QPainter::CompositionMode blendMode)
Returns a BlendMode corresponding to a QPainter::CompositionMode.
Definition: qgspainting.cpp:80
QgsPainting::getCompositionMode
static QPainter::CompositionMode getCompositionMode(QgsPainting::BlendMode blendMode)
Returns a QPainter::CompositionMode corresponding to a BlendMode.
Definition: qgspainting.cpp:20
QgsPainting::BlendMode
BlendMode
Blending modes enum defining the available composition modes that can be used when rendering a layer...
Definition: qgspainting.h:36
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