1 /****************************************************************************
2 **
3 ** Copyright (C) 2016 The Qt Company Ltd.
4 ** Contact: https://www.qt.io/licensing/
5 **
6 ** This file is part of the QtGui module of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and The Qt Company. For licensing terms
14 ** and conditions see https://www.qt.io/terms-conditions. For further
15 ** information use the contact form at https://www.qt.io/contact-us.
16 **
17 ** GNU Lesser General Public License Usage
18 ** Alternatively, this file may be used under the terms of the GNU Lesser
19 ** General Public License version 3 as published by the Free Software
20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the
21 ** packaging of this file. Please review the following information to
22 ** ensure the GNU Lesser General Public License version 3 requirements
23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24 **
25 ** GNU General Public License Usage
26 ** Alternatively, this file may be used under the terms of the GNU
27 ** General Public License version 2.0 or (at your option) the GNU General
28 ** Public license version 3 or any later version approved by the KDE Free
29 ** Qt Foundation. The licenses are as published by the Free Software
30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31 ** included in the packaging of this file. Please review the following
32 ** information to ensure the GNU General Public License requirements will
33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34 ** https://www.gnu.org/licenses/gpl-3.0.html.
35 **
36 ** $QT_END_LICENSE$
37 **
38 ****************************************************************************/
39 
40 #ifndef QSTATICTEXT_P_H
41 #define QSTATICTEXT_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 for the convenience
48 // of internal files.  This header file may change from version to version
49 // without notice, or even be removed.
50 //
51 // We mean it.
52 //
53 
54 #include <QtGui/private/qtguiglobal_p.h>
55 #include "qstatictext.h"
56 
57 #include <private/qtextureglyphcache_p.h>
58 #include <QtGui/qcolor.h>
59 
60 QT_BEGIN_NAMESPACE
61 
62 // ### Qt 6: Unexport again, if QOpenGLStaticTextUserData (the one from QtOpenGL) is gone by then
63 class Q_GUI_EXPORT QStaticTextUserData
64 {
65 public:
66     enum Type {
67         NoUserData,
68         OpenGLUserData
69     };
70 
QStaticTextUserData(Type t)71     QStaticTextUserData(Type t) : ref(0), type(t) {}
72     virtual ~QStaticTextUserData();
73 
74     QAtomicInt ref;
75     Type type;
76 };
77 
78 class Q_GUI_EXPORT QStaticTextItem
79 {
80 public:
QStaticTextItem()81     QStaticTextItem() : useBackendOptimizations(false),
82                         userDataNeedsUpdate(0), usesRawFont(0),
83                         m_fontEngine(nullptr), m_userData(nullptr) {}
84 
setUserData(QStaticTextUserData * newUserData)85     void setUserData(QStaticTextUserData *newUserData)
86     {
87         m_userData = newUserData;
88     }
userData()89     QStaticTextUserData *userData() const { return m_userData.data(); }
90 
setFontEngine(QFontEngine * fe)91     void setFontEngine(QFontEngine *fe)
92     {
93         m_fontEngine = fe;
94     }
95 
fontEngine()96     QFontEngine *fontEngine() const { return m_fontEngine.data(); }
97 
98     union {
99         QFixedPoint *glyphPositions;             // 8 bytes per glyph
100         int positionOffset;
101     };
102     union {
103         glyph_t *glyphs;                         // 4 bytes per glyph
104         int glyphOffset;
105     };
106                                                  // =================
107                                                  // 12 bytes per glyph
108 
109                                                  // 8 bytes for pointers
110     int numGlyphs;                               // 4 bytes per item
111     QFont font;                                  // 8 bytes per item
112     QColor color;                                // 10 bytes per item
113     char useBackendOptimizations : 1;            // 1 byte per item
114     char userDataNeedsUpdate : 1;                //
115     char usesRawFont : 1;                        //
116 
117 private: // private to avoid abuse
118     QExplicitlySharedDataPointer<QFontEngine> m_fontEngine;       // 4 bytes per item
119     QExplicitlySharedDataPointer<QStaticTextUserData> m_userData; // 8 bytes per item
120                                                                   // ================
121                                                                   // 43 bytes per item
122 };
123 Q_DECLARE_TYPEINFO(QStaticTextItem, Q_MOVABLE_TYPE);
124 
125 class QStaticText;
126 class Q_AUTOTEST_EXPORT QStaticTextPrivate
127 {
128 public:
129     QStaticTextPrivate();
130     QStaticTextPrivate(const QStaticTextPrivate &other);
131     ~QStaticTextPrivate();
132 
133     void init();
134     void paintText(const QPointF &pos, QPainter *p, const QColor &pen);
135 
invalidate()136     void invalidate()
137     {
138         needsRelayout = true;
139     }
140 
141     QAtomicInt ref;                      // 4 bytes per text
142 
143     QString text;                        // 4 bytes per text
144     QFont font;                          // 8 bytes per text
145     qreal textWidth;                     // 8 bytes per text
146     QSizeF actualSize;                   // 16 bytes per text
147     QPointF position;                    // 16 bytes per text
148 
149     QTransform matrix;                   // 80 bytes per text
150     QStaticTextItem *items;              // 4 bytes per text
151     int itemCount;                       // 4 bytes per text
152 
153     glyph_t *glyphPool;                  // 4 bytes per text
154     QFixedPoint *positionPool;           // 4 bytes per text
155 
156     QTextOption textOption;              // 28 bytes per text
157 
158     unsigned char needsRelayout            : 1; // 1 byte per text
159     unsigned char useBackendOptimizations  : 1;
160     unsigned char textFormat               : 2;
161     unsigned char untransformedCoordinates : 1;
162                                          // ================
163                                          // 191 bytes per text
164 
165     static QStaticTextPrivate *get(const QStaticText *q);
166 };
167 
168 QT_END_NAMESPACE
169 
170 #endif // QSTATICTEXT_P_H
171