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-/****************************************************************************
-**
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the QtGui module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial Usage
-** Licensees holding valid Qt Commercial licenses may use this file in
-** accordance with the Qt Commercial License Agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and Nokia.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3.0 as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU General Public License version 3.0 requirements will be
-** met: http://www.gnu.org/copyleft/gpl.html.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-#ifndef QTEXTLAYOUT_H
-#define QTEXTLAYOUT_H
-
-#include <QtCore/qstring.h>
-#include <QtCore/qnamespace.h>
-#include <QtCore/qrect.h>
-#include <QtCore/qvector.h>
-#include <QtGui/qcolor.h>
-#include <QtCore/qobject.h>
-#include <QtGui/qevent.h>
-#include <QtGui/qtextformat.h>
-
-QT_BEGIN_HEADER
-
-QT_BEGIN_NAMESPACE
-
-QT_MODULE(Gui)
-
-class QTextEngine;
-class QFont;
-class QRect;
-class QRegion;
-class QTextFormat;
-class QPalette;
-class QPainter;
-
-class Q_GUI_EXPORT QTextInlineObject
-{
-public:
- QTextInlineObject(int i, QTextEngine *e) : itm(i), eng(e) {}
- inline QTextInlineObject() : itm(0), eng(0) {}
- inline bool isValid() const { return eng; }
-
- QRectF rect() const;
- qreal width() const;
- qreal ascent() const;
- qreal descent() const;
- qreal height() const;
-
- Qt::LayoutDirection textDirection() const;
-
- void setWidth(qreal w);
- void setAscent(qreal a);
- void setDescent(qreal d);
-
- int textPosition() const;
-
- int formatIndex() const;
- QTextFormat format() const;
-
-private:
- friend class QTextLayout;
- int itm;
- QTextEngine *eng;
-};
-
-class QPaintDevice;
-class QTextFormat;
-class QTextLine;
-class QTextBlock;
-class QTextOption;
-
-class Q_GUI_EXPORT QTextLayout
-{
-public:
- // does itemization
- QTextLayout();
- QTextLayout(const QString& text);
- QTextLayout(const QString& text, const QFont &font, QPaintDevice *paintdevice = 0);
- QTextLayout(const QTextBlock &b);
- ~QTextLayout();
-
- void setFont(const QFont &f);
- QFont font() const;
-
- void setText(const QString& string);
- QString text() const;
-
- void setTextOption(const QTextOption &option);
- QTextOption textOption() const;
-
- void setPreeditArea(int position, const QString &text);
- int preeditAreaPosition() const;
- QString preeditAreaText() const;
-
- struct FormatRange {
- int start;
- int length;
- QTextCharFormat format;
- };
- void setAdditionalFormats(const QList<FormatRange> &overrides);
- QList<FormatRange> additionalFormats() const;
- void clearAdditionalFormats();
-
- void setCacheEnabled(bool enable);
- bool cacheEnabled() const;
-
- void beginLayout();
- void endLayout();
- void clearLayout();
-
- QTextLine createLine();
-
- int lineCount() const;
- QTextLine lineAt(int i) const;
- QTextLine lineForTextPosition(int pos) const;
-
- enum CursorMode {
- SkipCharacters,
- SkipWords
- };
- bool isValidCursorPosition(int pos) const;
- int nextCursorPosition(int oldPos, CursorMode mode = SkipCharacters) const;
- int previousCursorPosition(int oldPos, CursorMode mode = SkipCharacters) const;
-
- void draw(QPainter *p, const QPointF &pos, const QVector<FormatRange> &selections = QVector<FormatRange>(),
- const QRectF &clip = QRectF()) const;
- void drawCursor(QPainter *p, const QPointF &pos, int cursorPosition) const;
- void drawCursor(QPainter *p, const QPointF &pos, int cursorPosition, int width) const;
-
- QPointF position() const;
- void setPosition(const QPointF &p);
-
- QRectF boundingRect() const;
-
- qreal minimumWidth() const;
- qreal maximumWidth() const;
-
- QTextEngine *engine() const { return d; }
- void setFlags(int flags);
-private:
- QTextLayout(QTextEngine *e) : d(e) {}
- Q_DISABLE_COPY(QTextLayout)
-
- friend class QPainter;
- friend class QPSPrinter;
- friend class QGraphicsSimpleTextItemPrivate;
- friend class QGraphicsSimpleTextItem;
- friend void qt_format_text(const QFont &font, const QRectF &_r, int tf, const QTextOption *, const QString& str,
- QRectF *brect, int tabstops, int* tabarray, int tabarraylen,
- QPainter *painter);
- QTextEngine *d;
-};
-
-
-class Q_GUI_EXPORT QTextLine
-{
-public:
- inline QTextLine() : i(0), eng(0) {}
- inline bool isValid() const { return eng; }
-
- QRectF rect() const;
- qreal x() const;
- qreal y() const;
- qreal width() const;
- qreal ascent() const;
- qreal descent() const;
- qreal height() const;
- qreal leading() const;
-
- void setLeadingIncluded(bool included);
- bool leadingIncluded() const;
-
- qreal naturalTextWidth() const;
- QRectF naturalTextRect() const;
-
- enum Edge {
- Leading,
- Trailing
- };
- enum CursorPosition {
- CursorBetweenCharacters,
- CursorOnCharacter
- };
-
- /* cursorPos gets set to the valid position */
- qreal cursorToX(int *cursorPos, Edge edge = Leading) const;
- inline qreal cursorToX(int cursorPos, Edge edge = Leading) const { return cursorToX(&cursorPos, edge); }
- int xToCursor(qreal x, CursorPosition = CursorBetweenCharacters) const;
-
- void setLineWidth(qreal width);
- void setNumColumns(int columns);
- void setNumColumns(int columns, qreal alignmentWidth);
-
- void setPosition(const QPointF &pos);
- QPointF position() const;
-
- int textStart() const;
- int textLength() const;
-
- int lineNumber() const { return i; }
-
- void draw(QPainter *p, const QPointF &point, const QTextLayout::FormatRange *selection = 0) const;
-
-private:
- QTextLine(int line, QTextEngine *e) : i(line), eng(e) {}
- void layout_helper(int numGlyphs);
- friend class QTextLayout;
- int i;
- QTextEngine *eng;
-};
-
-QT_END_NAMESPACE
-
-QT_END_HEADER
-
-#endif // QTEXTLAYOUT_H
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