QFontInfo露

PyQt5.QtGui.QFontInfo

Description露

The QFontInfo class provides general information about fonts.

The QFontInfo class provides the same access functions as QFont, e.g. family(), pointSize(), italic(), weight(), fixedPitch(), styleHint() etc. But whilst the QFont access functions return the values that were set, a QFontInfo object returns the values that apply to the font that will actually be used to draw the text.

For example, when the program asks for a 25pt Courier font on a machine that has a non-scalable 24pt Courier font, QFont will (normally) use the 24pt Courier for rendering. In this case, pointSize() returns 25 and pointSize() returns 24.

There are three ways to create a QFontInfo object.

Calling the QFontInfo constructor with a QFont creates a font info object for a screen-compatible font, i.e. the font cannot be a printer font. If the font is changed later, the font info object is not updated.

(Note: If you use a printer font the values returned may be inaccurate. Printer fonts are not always accessible so the nearest screen font is used if a printer font is supplied.)
fontInfo() returns the font info for a widget鈥檚 font. This is equivalent to calling QFontInfo(widget->`font() <https://doc.qt.io/qt-5/stylesheet-reference.html#font>`_). If the widget鈥檚 font is changed later, the font info object is not updated.
fontInfo() returns the font info for a painter鈥檚 current font. If the painter鈥檚 font is changed later, the font info object is not updated.

Methods露

__init__(QFont)

Constructs a font info object for font.

The font must be screen-compatible, i.e. a font you use when drawing text in QWidget or QPixmap, not QPicture or QPrinter.

The font info object holds the information for the font that is passed in the constructor at the time it is created, and is not updated if the font鈥檚 attributes are changed later.

Use fontInfo() to get the font info when painting. This will give correct results also when painting on paint device that is not screen-compatible.

__init__(QFontInfo): Constructs a copy of fi.

bold() → bool: TODO

exactMatch() → bool: Returns true if the matched window system font is exactly the same as the one specified by the font; otherwise returns false.

See also

exactMatch().

family() → str: Returns the family name of the matched window system font.

See also

family().

fixedPitch() → bool: Returns the fixed pitch value of the matched window system font.

See also

fixedPitch().

italic() → bool: Returns the italic value of the matched window system font.

See also

italic().

pixelSize() → int: Returns the pixel size of the matched window system font.

See also

pointSize().

pointSize() → int: Returns the point size of the matched window system font.

See also

pointSizeF(), pointSize().

pointSizeF() → float: Returns the point size of the matched window system font.

See also

pointSizeF().

rawMode() → bool: TODO

style() → Style: Returns the style value of the matched window system font.

See also

style().

styleHint() → StyleHint

Returns the style of the matched window system font.

Currently only returns the style hint set in QFont.