1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtGui module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #ifndef QTEXTDOCUMENTLAYOUT_P_H

    43 #define QTEXTDOCUMENTLAYOUT_P_H

    44 

    45 //

    46 //  W A R N I N G

    47 //  -------------

    48 //

    49 // This file is not part of the Qt API.  It exists purely as an

    50 // implementation detail.  This header file may change from version to

    51 // version without notice, or even be removed.

    52 //

    53 // We mean it.

    54 //

    55 

    56 #include "QtGui/qabstracttextdocumentlayout.h"

    57 #include "QtGui/qtextoption.h"

    58 #include "QtGui/qtextobject.h"

    59 

    60 QT_BEGIN_NAMESPACE

    61 

    62 class QTextListFormat;

    63 

    64 class QTextDocumentLayoutPrivate;

    65 

    66 class Q_AUTOTEST_EXPORT QTextDocumentLayout : public QAbstractTextDocumentLayout

    67 {

    68     Q_DECLARE_PRIVATE(QTextDocumentLayout)

    69     Q_OBJECT

    70     Q_PROPERTY(int cursorWidth READ cursorWidth WRITE setCursorWidth)

    71     Q_PROPERTY(qreal idealWidth READ idealWidth)

    72     Q_PROPERTY(bool contentHasAlignment READ contentHasAlignment)

    73 public:

    74     explicit QTextDocumentLayout(QTextDocument *doc);

    75 

    76     // from the abstract layout

    77     void draw(QPainter *painter, const PaintContext &context);

    78     int hitTest(const QPointF &point, Qt::HitTestAccuracy accuracy) const;

    79 

    80     int pageCount() const;

    81     QSizeF documentSize() const;

    82 

    83     void setCursorWidth(int width);

    84     int cursorWidth() const;

    85 

    86     // internal, to support the ugly FixedColumnWidth wordwrap mode in QTextEdit

    87     void setFixedColumnWidth(int width);

    88 

    89     // internal for QTextEdit's NoWrap mode

    90     void setViewport(const QRectF &viewport);

    91 

    92     virtual QRectF frameBoundingRect(QTextFrame *frame) const;

    93     virtual QRectF blockBoundingRect(const QTextBlock &block) const;

    94 

    95     // ####

    96     int layoutStatus() const;

    97     int dynamicPageCount() const;

    98     QSizeF dynamicDocumentSize() const;

    99     void ensureLayouted(qreal);

   100 

   101     qreal idealWidth() const;

   102 

   103     bool contentHasAlignment() const;

   104 

   105 protected:

   106     void documentChanged(int from, int oldLength, int length);

   107     void resizeInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);

   108     void positionInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);

   109     void drawInlineObject(QPainter *p, const QRectF &rect, QTextInlineObject item,

   110                           int posInDocument, const QTextFormat &format);

   111     virtual void timerEvent(QTimerEvent *e);

   112 private:

   113     QRectF doLayout(int from, int oldLength, int length);

   114     void layoutFinished();

   115 };

   116 

   117 QT_END_NAMESPACE

   118 

   119 #endif // QTEXTDOCUMENTLAYOUT_P_H