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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
59QT_BEGIN_NAMESPACE
60
61class QTextListFormat;
62class QTextTableCell;
63class QTextDocumentLayoutPrivate;
64
65class 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)
72public:
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
106protected:
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;
113private:
114 QRectF doLayout(int from, int oldLength, int length);
115 void layoutFinished();
116};
117
118QT_END_NAMESPACE
119
120#endif // QTEXTDOCUMENTLAYOUT_P_H
121

source code of qtbase/src/gui/text/qtextdocumentlayout_p.h