QTextInlineObject Class
The QTextInlineObject class represents an inline object in a QAbstractTextDocumentLayout and its implementations. 更多...
| 头文件: | #include <QTextInlineObject> |
| qmake: | QT += gui |
Note: All functions in this class are reentrant.
公有函数
| qreal | ascent() const |
| qreal | descent() const |
| QTextFormat | format() const |
| int | formatIndex() const |
| qreal | height() const |
| bool | isValid() const |
| QRectF | rect() const |
| void | setAscent(qreal a) |
| void | setDescent(qreal d) |
| void | setWidth(qreal w) |
| Qt::LayoutDirection | textDirection() const |
| int | textPosition() const |
| qreal | width() const |
详细描述
The QTextInlineObject class represents an inline object in a QAbstractTextDocumentLayout and its implementations.
Normally, you do not need to create a QTextInlineObject. It is used by QAbstractTextDocumentLayout to handle inline objects when implementing a custom layout.
The inline object has various attributes that can be set, for example using, setWidth(), setAscent(), and setDescent(). The rectangle it occupies is given by rect(), and its direction by textDirection(). Its position in the text layout is given by textPosition(), and its format is given by format().
成员函数
qreal QTextInlineObject::ascent() const
Returns the inline object's ascent.
参见 setAscent(), descent(), width(), and rect().
qreal QTextInlineObject::descent() const
Returns the inline object's descent.
参见 setDescent(), ascent(), width(), and rect().
QTextFormat QTextInlineObject::format() const
Returns format of the inline object within the text layout.
int QTextInlineObject::formatIndex() const
Returns an integer describing the format of the inline object within the text layout.
qreal QTextInlineObject::height() const
Returns the inline object's total height. This is equal to ascent() + descent() + 1.
参见 ascent(), descent(), width(), and rect().
bool QTextInlineObject::isValid() const
Returns true if this inline object is valid; otherwise returns false.
QRectF QTextInlineObject::rect() const
Returns the inline object's rectangle.
参见 ascent(), descent(), and width().
void QTextInlineObject::setAscent(qreal a)
Sets the inline object's ascent to a.
参见 ascent(), setDescent(), width(), and rect().
void QTextInlineObject::setDescent(qreal d)
Sets the inline object's descent to d.
参见 descent(), setAscent(), width(), and rect().
void QTextInlineObject::setWidth(qreal w)
Sets the inline object's width to w.
参见 width(), ascent(), descent(), and rect().
Qt::LayoutDirection QTextInlineObject::textDirection() const
Returns if the object should be laid out right-to-left or left-to-right.
int QTextInlineObject::textPosition() const
The position of the inline object within the text layout.
qreal QTextInlineObject::width() const
Returns the inline object's width.