src/gui/text/qstatictext_p.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 04 Oct 2010 01:19:32 +0300
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QSTATICTEXT_P_H
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#define QSTATICTEXT_P_H
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//
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//  W A R N I N G
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//  -------------
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//
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// This file is not part of the Qt API.  It exists for the convenience
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// of internal files.  This header file may change from version to version
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// without notice, or even be removed.
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//
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// We mean it.
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//
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#include "qstatictext.h"
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#include <private/qtextureglyphcache_p.h>
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#include <QtGui/qcolor.h>
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QT_BEGIN_NAMESPACE
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class QStaticTextUserData
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{
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public:
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    enum Type {
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        NoUserData,
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        OpenGLUserData
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    };
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    QStaticTextUserData(Type t) : type(t) {}
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    virtual ~QStaticTextUserData() {}
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    Type type;
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};
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class Q_GUI_EXPORT QStaticTextItem
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{
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public:    
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    QStaticTextItem() : chars(0), numChars(0), fontEngine(0), userData(0),
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                        useBackendOptimizations(false), userDataNeedsUpdate(0) {}
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    ~QStaticTextItem() { delete userData; }
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    void setUserData(QStaticTextUserData *newUserData)
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    {
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        if (userData == newUserData)
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            return;
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        delete userData;
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        userData = newUserData;
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    }
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    union {
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        QFixedPoint *glyphPositions;             // 8 bytes per glyph
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        int positionOffset;
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    };
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    union {
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        glyph_t *glyphs;                         // 4 bytes per glyph
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        int glyphOffset;
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    };
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    union {
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        QChar *chars;                            // 2 bytes per glyph
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        int charOffset;
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    };
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                                                 // =================
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                                                 // 14 bytes per glyph
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                                                 // 12 bytes for pointers
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    int numGlyphs;                               // 4 bytes per item
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    int numChars;                                // 4 bytes per item
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    QFontEngine *fontEngine;                     // 4 bytes per item
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    QFont font;                                  // 8 bytes per item
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    QColor color;                                // 10 bytes per item
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    QStaticTextUserData *userData;               // 8 bytes per item
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    char useBackendOptimizations : 1;            // 1 byte per item
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    char userDataNeedsUpdate : 1;                //
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                                                 // ================
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                                                 // 51 bytes per item
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};
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class QStaticText;
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class Q_AUTOTEST_EXPORT QStaticTextPrivate
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{
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public:
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    QStaticTextPrivate();
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    QStaticTextPrivate(const QStaticTextPrivate &other);
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    ~QStaticTextPrivate();
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    void init();
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    void paintText(const QPointF &pos, QPainter *p);
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    void invalidate()
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    {
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        needsRelayout = true;
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    }
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    QAtomicInt ref;                      // 4 bytes per text
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    QString text;                        // 4 bytes per text
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    QFont font;                          // 8 bytes per text
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    qreal textWidth;                     // 8 bytes per text
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    QSizeF actualSize;                   // 16 bytes per text
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    QPointF position;                    // 16 bytes per text
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    QTransform matrix;                   // 80 bytes per text
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    QStaticTextItem *items;              // 4 bytes per text
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    int itemCount;                       // 4 bytes per text
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30
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    glyph_t *glyphPool;                  // 4 bytes per text
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    QFixedPoint *positionPool;           // 4 bytes per text
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    QChar *charPool;                     // 4 bytes per text
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33
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    QTextOption textOption;              // 28 bytes per text
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    unsigned char needsRelayout            : 1; // 1 byte per text
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    unsigned char useBackendOptimizations  : 1;
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    unsigned char textFormat               : 2;
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    unsigned char untransformedCoordinates : 1;
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                                         // ================
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                                         // 195 bytes per text
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    static QStaticTextPrivate *get(const QStaticText *q);
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};
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QT_END_NAMESPACE
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#endif // QSTATICTEXT_P_H