PySide.QtGui.QTextLine class represents a line of text inside a PySide.QtGui.QTextLayout .
A text line is usually created by QTextLayout.createLine() .
After being created, the line can be filled using the PySide.QtGui.QTextLine.setLineWidth() or PySide.QtGui.QTextLine.setNumColumns() functions. A line has a number of attributes including the rectangle it occupies, PySide.QtGui.QTextLine.rect() , its coordinates, PySide.QtGui.QTextLine.x() and PySide.QtGui.QTextLine.y() , its PySide.QtGui.QTextLine.textLength() , PySide.QtGui.QTextLine.width() and PySide.QtGui.QTextLine.naturalTextWidth() , and its PySide.QtGui.QTextLine.ascent() and decent() relative to the text. The position of the cursor in terms of the line is available from PySide.QtGui.QTextLine.cursorToX() and its inverse from PySide.QtGui.QTextLine.xToCursor() . A line can be moved with PySide.QtGui.QTextLine.setPosition() .
| 参数： | QTextLine – PySide.QtGui.QTextLine |
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Creates an invalid line.
| 常量 | 描述 |
|---|---|
| QTextLine.Leading | |
| QTextLine.Trailing |
| 常量 | 描述 |
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| QTextLine.CursorBetweenCharacters | |
| QTextLine.CursorOnCharacter |
| 返回类型： | PySide.QtCore.qreal |
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Returns the line's ascent.
| 参数： |
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| 返回类型： |
PyObject |
这是重载函数。
| 返回类型： | PySide.QtCore.qreal |
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Returns the line's descent.
| 参数： |
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| 返回类型： | PySide.QtCore.qreal |
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Returns the line's height. This is equal to PySide.QtGui.QTextLine.ascent() + PySide.QtGui.QTextLine.descent() + 1 if leading is not included. If leading is included, this equals to PySide.QtGui.QTextLine.ascent() + PySide.QtGui.QTextLine.descent() + PySide.QtGui.QTextLine.leading() + 1.
| 返回类型： | PySide.QtCore.qreal |
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Returns the horizontal advance of the text. The advance of the text is the distance from its position to the next position at which text would naturally be drawn.
By adding the advance to the position of the text line and using this as the position of a second text line, you will be able to position the two lines side-by-side without gaps in-between.
| 返回类型： | PySide.QtCore.bool |
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Returns true if this text line is valid; otherwise returns false.
| 参数： | numGlyphs – PySide.QtCore.int |
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| 返回类型： | PySide.QtCore.qreal |
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Returns the line's leading.
| 返回类型： | PySide.QtCore.bool |
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Returns true if positive leading is included into the line's height; otherwise returns false.
By default, leading is not included.
| 返回类型： | PySide.QtCore.int |
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Returns the position of the line in the text engine.
| 返回类型： | PySide.QtCore.QRectF |
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Returns the rectangle covered by the line.
| 返回类型： | PySide.QtCore.qreal |
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Returns the width of the line that is occupied by text. This is always <= to PySide.QtGui.QTextLine.width() , and is the minimum width that could be used by layout() without changing the line break position.
| 返回类型： | PySide.QtCore.QPointF |
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Returns the line's position relative to the text layout's position.
| 返回类型： | PySide.QtCore.QRectF |
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Returns the line's bounding rectangle.
| 参数： | included – PySide.QtCore.bool |
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Includes positive leading into the line's height if included is true; otherwise does not include leading.
By default, leading is not included.
Note that negative leading is ignored, it must be handled in the code using the text lines by letting the lines overlap.
| 参数： | width – PySide.QtCore.qreal |
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Lays out the line with the given width . The line is filled from its starting position with as many characters as will fit into the line. In case the text cannot be split at the end of the line, it will be filled with additional characters to the next whitespace or end of the text.
| 参数： | columns – PySide.QtCore.int |
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Lays out the line. The line is filled from its starting position with as many characters as are specified by numColumns . In case the text cannot be split until numColumns characters, the line will be filled with as many characters to the next whitespace or end of the text.
| 参数： |
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Lays out the line. The line is filled from its starting position with as many characters as are specified by numColumns . In case the text cannot be split until numColumns characters, the line will be filled with as many characters to the next whitespace or end of the text. The provided alignmentWidth is used as reference width for alignment.
| 参数： | pos – PySide.QtCore.QPointF |
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Moves the line to position pos .
| 返回类型： | PySide.QtCore.int |
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Returns the length of the text in the line.
| 返回类型： | PySide.QtCore.int |
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Returns the start of the line from the beginning of the string passed to the PySide.QtGui.QTextLayout .
| 返回类型： | PySide.QtCore.qreal |
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Returns the line's width as specified by the layout() function.
| 返回类型： | PySide.QtCore.qreal |
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Returns the line's x position.
| 参数： |
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| 返回类型： |
PySide.QtCore.int |
Converts the x-coordinate x , to the nearest matching cursor position, depending on the cursor position type, cpos .
| 返回类型： | PySide.QtCore.qreal |
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Returns the line's y position.
