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39 
40 #ifndef QRAWFONTPRIVATE_P_H
41 #define QRAWFONTPRIVATE_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 <QtGui/private/qtguiglobal_p.h>
55 #include "qrawfont.h"
56 
57 #include "qfontengine_p.h"
58 #include <QtCore/qthread.h>
59 #include <QtCore/qthreadstorage.h>
60 
61 #if !defined(QT_NO_RAWFONT)
62 
63 QT_BEGIN_NAMESPACE
64 
65 namespace { class CustomFontFileLoader; }
66 class Q_GUI_EXPORT QRawFontPrivate
67 {
68 public:
QRawFontPrivate()69     QRawFontPrivate()
70         : fontEngine(nullptr)
71         , hintingPreference(QFont::PreferDefaultHinting)
72         , thread(nullptr)
73     {}
74 
QRawFontPrivate(const QRawFontPrivate & other)75     QRawFontPrivate(const QRawFontPrivate &other)
76         : fontEngine(other.fontEngine)
77         , hintingPreference(other.hintingPreference)
78         , thread(other.thread)
79     {
80 #ifndef QT_NO_DEBUG
81         Q_ASSERT(fontEngine == nullptr || thread == QThread::currentThread());
82 #endif
83         if (fontEngine != nullptr)
84             fontEngine->ref.ref();
85     }
86 
~QRawFontPrivate()87     ~QRawFontPrivate()
88     {
89 #ifndef QT_NO_DEBUG
90         Q_ASSERT(ref.loadRelaxed() == 0);
91 #endif
92         cleanUp();
93     }
94 
cleanUp()95     inline void cleanUp()
96     {
97         setFontEngine(nullptr);
98         hintingPreference = QFont::PreferDefaultHinting;
99     }
100 
isValid()101     inline bool isValid() const
102     {
103 #ifndef QT_NO_DEBUG
104         Q_ASSERT(fontEngine == nullptr || thread == QThread::currentThread());
105 #endif
106         return fontEngine != nullptr;
107     }
108 
setFontEngine(QFontEngine * engine)109     inline void setFontEngine(QFontEngine *engine)
110     {
111 #ifndef QT_NO_DEBUG
112         Q_ASSERT(fontEngine == nullptr || thread == QThread::currentThread());
113 #endif
114         if (fontEngine == engine)
115             return;
116 
117         if (fontEngine != nullptr) {
118             if (!fontEngine->ref.deref())
119                 delete fontEngine;
120 #ifndef QT_NO_DEBUG
121             thread = nullptr;
122 #endif
123         }
124 
125         fontEngine = engine;
126 
127         if (fontEngine != nullptr) {
128             fontEngine->ref.ref();
129 #ifndef QT_NO_DEBUG
130             thread = QThread::currentThread();
131             Q_ASSERT(thread);
132 #endif
133         }
134     }
135 
136     void loadFromData(const QByteArray &fontData,
137                               qreal pixelSize,
138                               QFont::HintingPreference hintingPreference);
139 
get(const QRawFont & font)140     static QRawFontPrivate *get(const QRawFont &font) { return font.d.data(); }
141 
142     QFontEngine *fontEngine;
143     QFont::HintingPreference hintingPreference;
144     QAtomicInt ref;
145 
146 private:
147     QThread *thread;
148 };
149 
150 QT_END_NAMESPACE
151 
152 #endif // QT_NO_RAWFONT
153 
154 #endif // QRAWFONTPRIVATE_P_H
155