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42 #ifndef QABSTRACTTEXTDOCUMENTLAYOUT_H
43 #define QABSTRACTTEXTDOCUMENTLAYOUT_H
45 #include <QtCore/qobject.h>
46 #include <QtGui/qtextlayout.h>
47 #include <QtGui/qtextdocument.h>
48 #include <QtGui/qtextcursor.h>
49 #include <QtGui/qpalette.h>
57 class QAbstractTextDocumentLayoutPrivate;
59 class QTextObjectInterface;
62 class Q_GUI_EXPORT QAbstractTextDocumentLayout : public QObject
65 Q_DECLARE_PRIVATE(QAbstractTextDocumentLayout)
68 explicit QAbstractTextDocumentLayout(QTextDocument *doc);
69 ~QAbstractTextDocumentLayout();
74 QTextCharFormat format;
85 QVector<Selection> selections;
88 virtual void draw(QPainter *painter, const PaintContext &context) = 0;
89 virtual int hitTest(const QPointF &point, Qt::HitTestAccuracy accuracy) const = 0;
90 QString anchorAt(const QPointF& pos) const;
92 virtual int pageCount() const = 0;
93 virtual QSizeF documentSize() const = 0;
95 virtual QRectF frameBoundingRect(QTextFrame *frame) const = 0;
96 virtual QRectF blockBoundingRect(const QTextBlock &block) const = 0;
98 void setPaintDevice(QPaintDevice *device);
99 QPaintDevice *paintDevice() const;
101 QTextDocument *document() const;
103 void registerHandler(int objectType, QObject *component);
104 QTextObjectInterface *handlerForObject(int objectType) const;
107 void update(const QRectF & = QRectF(0., 0., 1000000000., 1000000000.));
108 void updateBlock(const QTextBlock &block);
109 void documentSizeChanged(const QSizeF &newSize);
110 void pageCountChanged(int newPages);
113 QAbstractTextDocumentLayout(QAbstractTextDocumentLayoutPrivate &, QTextDocument *);
115 virtual void documentChanged(int from, int charsRemoved, int charsAdded) = 0;
117 virtual void resizeInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);
118 virtual void positionInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);
119 virtual void drawInlineObject(QPainter *painter, const QRectF &rect, QTextInlineObject object, int posInDocument, const QTextFormat &format);
121 int formatIndex(int pos);
122 QTextCharFormat format(int pos);
125 friend class QWidgetTextControl;
126 friend class QTextControl;
127 friend class QTextDocument;
128 friend class QTextDocumentPrivate;
129 friend class QTextEngine;
130 friend class QTextLayout;
131 friend class QTextLine;
132 Q_PRIVATE_SLOT(d_func(), void _q_handlerDestroyed(QObject *obj))
133 Q_PRIVATE_SLOT(d_func(), int _q_dynamicPageCountSlot())
134 Q_PRIVATE_SLOT(d_func(), QSizeF _q_dynamicDocumentSizeSlot())
137 class Q_GUI_EXPORT QTextObjectInterface
140 virtual ~QTextObjectInterface() {}
141 virtual QSizeF intrinsicSize(QTextDocument *doc, int posInDocument, const QTextFormat &format) = 0;
142 virtual void drawObject(QPainter *painter, const QRectF &rect, QTextDocument *doc, int posInDocument, const QTextFormat &format) = 0;
145 Q_DECLARE_INTERFACE(QTextObjectInterface, "com.trolltech.Qt.QTextObjectInterface")
151 #endif // QABSTRACTTEXTDOCUMENTLAYOUT_H