1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtGui module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QTEXTDOCUMENTLAYOUT_P_H 41 #define QTEXTDOCUMENTLAYOUT_P_H 42 43 // 44 // W A R N I N G 45 // ------------- 46 // 47 // This file is not part of the Qt API. It exists purely as an 48 // implementation detail. This header file may change from version to 49 // version without notice, or even be removed. 50 // 51 // We mean it. 52 // 53 54 #include <QtGui/private/qtguiglobal_p.h> 55 #include "QtGui/qabstracttextdocumentlayout.h" 56 #include "QtGui/qtextoption.h" 57 #include "QtGui/qtextobject.h" 58 59 QT_BEGIN_NAMESPACE 60 61 class QTextListFormat; 62 class QTextTableCell; 63 class QTextDocumentLayoutPrivate; 64 65 class Q_GUI_EXPORT QTextDocumentLayout : public QAbstractTextDocumentLayout 66 { 67 Q_DECLARE_PRIVATE(QTextDocumentLayout) 68 Q_OBJECT 69 Q_PROPERTY(int cursorWidth READ cursorWidth WRITE setCursorWidth) 70 Q_PROPERTY(qreal idealWidth READ idealWidth) 71 Q_PROPERTY(bool contentHasAlignment READ contentHasAlignment) 72 public: 73 explicit QTextDocumentLayout(QTextDocument *doc); 74 75 // from the abstract layout 76 void draw(QPainter *painter, const PaintContext &context) override; 77 int hitTest(const QPointF &point, Qt::HitTestAccuracy accuracy) const override; 78 79 int pageCount() const override; 80 QSizeF documentSize() const override; 81 82 void setCursorWidth(int width); 83 int cursorWidth() const; 84 85 // internal, to support the ugly FixedColumnWidth wordwrap mode in QTextEdit 86 void setFixedColumnWidth(int width); 87 88 // internal for QTextEdit's NoWrap mode 89 void setViewport(const QRectF &viewport); 90 91 virtual QRectF frameBoundingRect(QTextFrame *frame) const override; 92 virtual QRectF blockBoundingRect(const QTextBlock &block) const override; 93 QRectF tableBoundingRect(QTextTable *table) const; 94 QRectF tableCellBoundingRect(QTextTable *table, const QTextTableCell &cell) const; 95 96 // #### 97 int layoutStatus() const; 98 int dynamicPageCount() const; 99 QSizeF dynamicDocumentSize() const; 100 void ensureLayouted(qreal); 101 102 qreal idealWidth() const; 103 104 bool contentHasAlignment() const; 105 106 protected: 107 void documentChanged(int from, int oldLength, int length) override; 108 void resizeInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format) override; 109 void positionInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format) override; 110 void drawInlineObject(QPainter *p, const QRectF &rect, QTextInlineObject item, 111 int posInDocument, const QTextFormat &format) override; 112 virtual void timerEvent(QTimerEvent *e) override; 113 private: 114 QRectF doLayout(int from, int oldLength, int length); 115 void layoutFinished(); 116 }; 117 118 QT_END_NAMESPACE 119 120 #endif // QTEXTDOCUMENTLAYOUT_P_H 121