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authorQt by Nokia <qt-info@nokia.com>2011-04-27 12:05:43 +0200
committeraxis <qt-info@nokia.com>2011-04-27 12:05:43 +0200
commit38be0d13830efd2d98281c645c3a60afe05ffece (patch)
tree6ea73f3ec77f7d153333779883e8120f82820abe /src/gui/text/qabstracttextdocumentlayout.h
Initial import from the monolithic Qt.
This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
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+/****************************************************************************
+**
+** Copyright (C) 2011 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QABSTRACTTEXTDOCUMENTLAYOUT_H
+#define QABSTRACTTEXTDOCUMENTLAYOUT_H
+
+#include <QtCore/qobject.h>
+#include <QtGui/qtextlayout.h>
+#include <QtGui/qtextdocument.h>
+#include <QtGui/qtextcursor.h>
+#include <QtGui/qpalette.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class QAbstractTextDocumentLayoutPrivate;
+class QTextBlock;
+class QTextObjectInterface;
+class QTextFrame;
+
+class Q_GUI_EXPORT QAbstractTextDocumentLayout : public QObject
+{
+ Q_OBJECT
+ Q_DECLARE_PRIVATE(QAbstractTextDocumentLayout)
+
+public:
+ explicit QAbstractTextDocumentLayout(QTextDocument *doc);
+ ~QAbstractTextDocumentLayout();
+
+ struct Selection
+ {
+ QTextCursor cursor;
+ QTextCharFormat format;
+ };
+
+ struct PaintContext
+ {
+ PaintContext()
+ : cursorPosition(-1)
+ {}
+ int cursorPosition;
+ QPalette palette;
+ QRectF clip;
+ QVector<Selection> selections;
+ };
+
+ virtual void draw(QPainter *painter, const PaintContext &context) = 0;
+ virtual int hitTest(const QPointF &point, Qt::HitTestAccuracy accuracy) const = 0;
+ QString anchorAt(const QPointF& pos) const;
+
+ virtual int pageCount() const = 0;
+ virtual QSizeF documentSize() const = 0;
+
+ virtual QRectF frameBoundingRect(QTextFrame *frame) const = 0;
+ virtual QRectF blockBoundingRect(const QTextBlock &block) const = 0;
+
+ void setPaintDevice(QPaintDevice *device);
+ QPaintDevice *paintDevice() const;
+
+ QTextDocument *document() const;
+
+ void registerHandler(int objectType, QObject *component);
+ QTextObjectInterface *handlerForObject(int objectType) const;
+
+Q_SIGNALS:
+ void update(const QRectF & = QRectF(0., 0., 1000000000., 1000000000.));
+ void updateBlock(const QTextBlock &block);
+ void documentSizeChanged(const QSizeF &newSize);
+ void pageCountChanged(int newPages);
+
+protected:
+ QAbstractTextDocumentLayout(QAbstractTextDocumentLayoutPrivate &, QTextDocument *);
+
+ virtual void documentChanged(int from, int charsRemoved, int charsAdded) = 0;
+
+ virtual void resizeInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);
+ virtual void positionInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);
+ virtual void drawInlineObject(QPainter *painter, const QRectF &rect, QTextInlineObject object, int posInDocument, const QTextFormat &format);
+
+ int formatIndex(int pos);
+ QTextCharFormat format(int pos);
+
+private:
+ friend class QTextControl;
+ friend class QTextDocument;
+ friend class QTextDocumentPrivate;
+ friend class QTextEngine;
+ friend class QTextLayout;
+ friend class QTextLine;
+ Q_PRIVATE_SLOT(d_func(), void _q_handlerDestroyed(QObject *obj))
+ Q_PRIVATE_SLOT(d_func(), int _q_dynamicPageCountSlot())
+ Q_PRIVATE_SLOT(d_func(), QSizeF _q_dynamicDocumentSizeSlot())
+};
+
+class Q_GUI_EXPORT QTextObjectInterface
+{
+public:
+ virtual ~QTextObjectInterface() {}
+ virtual QSizeF intrinsicSize(QTextDocument *doc, int posInDocument, const QTextFormat &format) = 0;
+ virtual void drawObject(QPainter *painter, const QRectF &rect, QTextDocument *doc, int posInDocument, const QTextFormat &format) = 0;
+};
+
+Q_DECLARE_INTERFACE(QTextObjectInterface, "com.trolltech.Qt.QTextObjectInterface")
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QABSTRACTTEXTDOCUMENTLAYOUT_H