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39 | |
40 | #ifndef QCOLORSPACE_P_H |
41 | #define QCOLORSPACE_P_H |
42 | |
43 | // |
44 | // W A R N I N G |
45 | // ------------- |
46 | // |
47 | // This file is not part of the Qt API. It exists purely as an |
48 | // implementation detail. This header file may change from version to |
49 | // version without notice, or even be removed. |
50 | // |
51 | // We mean it. |
52 | // |
53 | |
54 | #include "qcolorspace.h" |
55 | #include "qcolormatrix_p.h" |
56 | #include "qcolortrc_p.h" |
57 | #include "qcolortrclut_p.h" |
58 | |
59 | #include <QtCore/qmutex.h> |
60 | #include <QtCore/qpoint.h> |
61 | #include <QtCore/qshareddata.h> |
62 | |
63 | QT_BEGIN_NAMESPACE |
64 | |
65 | class Q_AUTOTEST_EXPORT QColorSpacePrimaries |
66 | { |
67 | public: |
68 | QColorSpacePrimaries() = default; |
69 | QColorSpacePrimaries(QColorSpace::Primaries primaries); |
70 | QColorSpacePrimaries(QPointF whitePoint, |
71 | QPointF redPoint, |
72 | QPointF greenPoint, |
73 | QPointF bluePoint) |
74 | : whitePoint(whitePoint) |
75 | , redPoint(redPoint) |
76 | , greenPoint(greenPoint) |
77 | , bluePoint(bluePoint) |
78 | { } |
79 | |
80 | QColorMatrix toXyzMatrix() const; |
81 | bool areValid() const; |
82 | |
83 | QPointF whitePoint; |
84 | QPointF redPoint; |
85 | QPointF greenPoint; |
86 | QPointF bluePoint; |
87 | }; |
88 | |
89 | class QColorSpacePrivate : public QSharedData |
90 | { |
91 | public: |
92 | QColorSpacePrivate(); |
93 | QColorSpacePrivate(QColorSpace::NamedColorSpace namedColorSpace); |
94 | QColorSpacePrivate(QColorSpace::Primaries primaries, QColorSpace::TransferFunction transferFunction, float gamma); |
95 | QColorSpacePrivate(const QColorSpacePrimaries &primaries, QColorSpace::TransferFunction transferFunction, float gamma); |
96 | QColorSpacePrivate(const QColorSpacePrivate &other) = default; |
97 | |
98 | // named different from get to avoid accidental detachs |
99 | static QColorSpacePrivate *getWritable(QColorSpace &colorSpace) |
100 | { |
101 | if (!colorSpace.d_ptr) { |
102 | colorSpace.d_ptr = new QColorSpacePrivate; |
103 | colorSpace.d_ptr->ref.ref(); |
104 | } else if (colorSpace.d_ptr->ref.loadRelaxed() != 1) { |
105 | colorSpace.d_ptr->ref.deref(); |
106 | colorSpace.d_ptr = new QColorSpacePrivate(*colorSpace.d_ptr); |
107 | colorSpace.d_ptr->ref.ref(); |
108 | } |
109 | Q_ASSERT(colorSpace.d_ptr->ref.loadRelaxed() == 1); |
110 | return colorSpace.d_ptr; |
111 | } |
112 | |
113 | static const QColorSpacePrivate *get(const QColorSpace &colorSpace) |
114 | { |
115 | return colorSpace.d_ptr; |
116 | } |
117 | |
118 | void initialize(); |
119 | void setToXyzMatrix(); |
120 | void setTransferFunction(); |
121 | void identifyColorSpace(); |
122 | QColorTransform transformationToColorSpace(const QColorSpacePrivate *out) const; |
123 | |
124 | static constexpr QColorSpace::NamedColorSpace Unknown = QColorSpace::NamedColorSpace(0); |
125 | QColorSpace::NamedColorSpace namedColorSpace = Unknown; |
126 | |
127 | QColorSpace::Primaries primaries = QColorSpace::Primaries::Custom; |
128 | QColorSpace::TransferFunction transferFunction = QColorSpace::TransferFunction::Custom; |
129 | float gamma = 0.0f; |
130 | QColorVector whitePoint; |
131 | |
132 | QColorTrc trc[3]; |
133 | QColorMatrix toXyz; |
134 | |
135 | QString description; |
136 | QByteArray iccProfile; |
137 | |
138 | static QBasicMutex s_lutWriteLock; |
139 | struct LUT { |
140 | LUT() = default; |
141 | ~LUT() = default; |
142 | LUT(const LUT &other) |
143 | { |
144 | if (other.generated.loadAcquire()) { |
145 | table[0] = other.table[0]; |
146 | table[1] = other.table[1]; |
147 | table[2] = other.table[2]; |
148 | generated.storeRelaxed(newValue: 1); |
149 | } |
150 | } |
151 | QSharedPointer<QColorTrcLut> &operator[](int i) { return table[i]; } |
152 | const QSharedPointer<QColorTrcLut> &operator[](int i) const { return table[i]; } |
153 | QSharedPointer<QColorTrcLut> table[3]; |
154 | QAtomicInt generated; |
155 | } mutable lut; |
156 | }; |
157 | |
158 | QT_END_NAMESPACE |
159 | |
160 | #endif // QCOLORSPACE_P_H |
161 | |