Add Qt3 development HEAD version

1 files changed, 184 insertions, 0 deletions

diff --git a/src/kernel/qtextlayout_p.h b/src/kernel/qtextlayout_p.h
new file mode 100644
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+++ b/src/kernel/qtextlayout_p.h
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+/****************************************************************************
+**
+** ???
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of the kernel module of the Qt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free Qt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing requirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at [email protected].
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with
+** the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#ifndef QTEXTLAYOUT_P_H
+#define QTEXTLAYOUT_P_H
+
+#ifndef QT_H
+#include "qstring.h"
+#include "qnamespace.h"
+#include "qrect.h"
+#endif // QT_H
+
+class QTextEngine;
+class QFont;
+
+class Q_EXPORT QTextItem
+{
+public:
+    inline QTextItem() : item(0), engine(0) {}
+    inline bool isValid() const { return (bool)engine; }
+
+    QRect rect() const;
+    int x() const;
+    int y() const;
+    int width() const;
+    int ascent() const;
+    int descent() const;
+
+    enum Edge {
+	Leading,
+	Trailing
+    };
+    enum CursorPosition {
+	BetweenCharacters,
+	OnCharacters
+    };
+
+    /* cPos gets set to the valid position */
+    int cursorToX( int *cPos, Edge edge = Leading ) const;
+    inline int cursorToX( int cPos, Edge edge = Leading ) const { return cursorToX( &cPos, edge ); }
+    int xToCursor( int x, CursorPosition = BetweenCharacters ) const;
+
+    bool isRightToLeft() const;
+    bool isObject() const;
+    bool isSpace() const;
+    bool isTab() const;
+
+    void setWidth( int w );
+    void setAscent( int a );
+    void setDescent( int d );
+
+    int from() const;
+    int length() const;
+
+private:
+    friend class QTextLayout;
+    friend class QPainter;
+    friend class QPSPrinter;
+    QTextItem( int i, QTextEngine *e ) : item( i ), engine( e ) {}
+    int item;
+    QTextEngine *engine;
+};
+
+
+class QPainter;
+
+class Q_EXPORT QTextLayout
+{
+public:
+    // does itemization
+    QTextLayout();
+    QTextLayout( const QString& string, QPainter * = 0 );
+    QTextLayout( const QString& string, const QFont& fnt );
+    ~QTextLayout();
+
+    void setText( const QString& string, const QFont& fnt );
+
+    enum LineBreakStrategy {
+	AtWordBoundaries,
+	AtCharBoundaries
+    };
+
+    /* add an additional item boundary eg. for style change */
+    void setBoundary( int strPos );
+
+    int numItems() const;
+    QTextItem itemAt( int i ) const;
+    QTextItem findItem( int strPos ) const;
+
+    enum LayoutMode {
+	NoBidi,
+	SingleLine,
+	MultiLine
+    };
+    void beginLayout( LayoutMode m = MultiLine );
+    void beginLine( int width );
+
+    bool atEnd() const;
+    QTextItem nextItem();
+    QTextItem currentItem();
+    /* ## maybe also currentItem() */
+    void setLineWidth( int newWidth );
+    int lineWidth() const;
+    int widthUsed() const;
+    int availableWidth() const;
+
+    enum Result {
+	Ok,
+	LineFull,
+	LineEmpty,
+	Error
+    };
+    /* returns true if completely added */
+    Result addCurrentItem();
+
+    /* Note: if ascent and descent are used they must be initialized to the minimum ascent/descent
+       acceptable for the line. QFontMetrics::ascent/descent() is usually the right choice */
+    Result endLine( int x = 0, int y = 0, int alignment = Qt::AlignLeft,
+		    int *ascent = 0, int *descent = 0, int *left = 0, int *right = 0 );
+    void endLayout();
+
+    enum CursorMode {
+	SkipCharacters,
+	SkipWords
+    };
+    bool validCursorPosition( int pos ) const;
+    int nextCursorPosition( int oldPos, CursorMode mode = SkipCharacters ) const;
+    int previousCursorPosition( int oldPos, CursorMode mode = SkipCharacters ) const;
+
+    void setDirection(QChar::Direction);
+private:
+    QTextLayout( QTextEngine *e ) : d( e ) {}
+    /* disable copy and assignment */
+    QTextLayout( const QTextLayout & ) {}
+    void operator = ( const QTextLayout & ) {}
+
+    friend class QTextItem;
+    friend class QPainter;
+    friend class QPSPrinter;
+    QTextEngine *d;
+};
+
+
+/*
+  class QPainter {
+      .....
+      void drawTextItem( int x, int y, QTextItem *item );
+  };
+*/
+
+#endif