Struct qt_gui::QFontInfo

#[repr(C)]pub struct QFontInfo { /* fields omitted */ }

The QFontInfo class provides general information about fonts.

C++ class: QFontInfo.

C++ documentation:

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, QFont::pointSize() returns 25 and QFontInfo::pointSize() returns 24.

There are three ways to create a QFontInfo object.

1. 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.)

2. QWidget::fontInfo() returns the font info for a widget's font. This is equivalent to calling QFontInfo(widget->font()). If the widget's font is changed later, the font info object is not updated.
3. QPainter::fontInfo() returns the font info for a painter's current font. If the painter's font is changed later, the font info object is not updated.

Methods

impl QFontInfo

pub unsafe fn bold(&self) -> bool

Returns true if weight() would return a value greater than QFont::Normal; otherwise returns false.

Calls C++ function: bool QFontInfo::bold() const.

C++ documentation:

Returns true if weight() would return a value greater than QFont::Normal; otherwise returns false.

See also weight() and QFont::bold().

pub unsafe fn copy_from(
    &self,
    arg1: impl CastInto<Ref<QFontInfo>>
) -> Ref<QFontInfo>

Assigns the font info in fi.

Calls C++ function: QFontInfo& QFontInfo::operator=(const QFontInfo& arg1).

C++ documentation:

Assigns the font info in fi.

pub unsafe fn exact_match(&self) -> bool

Returns true if the matched window system font is exactly the same as the one specified by the font; otherwise returns false.

Calls C++ function: bool QFontInfo::exactMatch() const.

C++ documentation:

Returns true if the matched window system font is exactly the same as the one specified by the font; otherwise returns false.

See also QFont::exactMatch().

pub unsafe fn family(&self) -> CppBox<QString>

Returns the family name of the matched window system font.

Calls C++ function: QString QFontInfo::family() const.

C++ documentation:

Returns the family name of the matched window system font.

See also QFont::family().

pub unsafe fn fixed_pitch(&self) -> bool

Returns the fixed pitch value of the matched window system font.

Calls C++ function: bool QFontInfo::fixedPitch() const.

C++ documentation:

Returns the fixed pitch value of the matched window system font.

See also QFont::fixedPitch().

pub unsafe fn italic(&self) -> bool

Returns the italic value of the matched window system font.

Calls C++ function: bool QFontInfo::italic() const.

C++ documentation:

Returns the italic value of the matched window system font.

See also QFont::italic().

pub unsafe fn new(arg1: impl CastInto<Ref<QFont>>) -> CppBox<QFontInfo>

Constructs a font info object for font.

Calls C++ function: [constructor] void QFontInfo::QFontInfo(const QFont& arg1).

C++ documentation:

Constructs a font info object for font.

The font must be screen-compatible, i.e. a font you use when drawing text in widgets or pixmaps, 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's attributes are changed later.

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

pub unsafe fn new_copy(arg1: impl CastInto<Ref<QFontInfo>>) -> CppBox<QFontInfo>

Constructs a copy of fi.

Calls C++ function: [constructor] void QFontInfo::QFontInfo(const QFontInfo& arg1).

C++ documentation:

Constructs a copy of fi.

pub unsafe fn overline(&self) -> bool

Calls C++ function: bool QFontInfo::overline() const.

pub unsafe fn pixel_size(&self) -> c_int

Returns the pixel size of the matched window system font.

Calls C++ function: int QFontInfo::pixelSize() const.

C++ documentation:

Returns the pixel size of the matched window system font.

See also QFont::pointSize().

pub unsafe fn point_size(&self) -> c_int

Returns the point size of the matched window system font.

Calls C++ function: int QFontInfo::pointSize() const.

C++ documentation:

Returns the point size of the matched window system font.

See also pointSizeF() and QFont::pointSize().

pub unsafe fn point_size_f(&self) -> c_double

Returns the point size of the matched window system font.

Calls C++ function: double QFontInfo::pointSizeF() const.

C++ documentation:

Returns the point size of the matched window system font.

See also QFont::pointSizeF().

pub unsafe fn raw_mode(&self) -> bool

Returns true if the font is a raw mode font; otherwise returns false.

Calls C++ function: bool QFontInfo::rawMode() const.

C++ documentation:

Returns true if the font is a raw mode font; otherwise returns false.

If it is a raw mode font, all other functions in QFontInfo will return the same values set in the QFont, regardless of the font actually used.

See also QFont::rawMode().

pub unsafe fn strike_out(&self) -> bool

Calls C++ function: bool QFontInfo::strikeOut() const.

pub unsafe fn style(&self) -> Style

Returns the style value of the matched window system font.

Calls C++ function: QFont::Style QFontInfo::style() const.

C++ documentation:

Returns the style value of the matched window system font.

See also QFont::style().

pub unsafe fn style_hint(&self) -> StyleHint

Returns the style of the matched window system font.

Calls C++ function: QFont::StyleHint QFontInfo::styleHint() const.

C++ documentation:

Returns the style of the matched window system font.

Currently only returns the style hint set in QFont.

See also QFont::styleHint() and QFont::StyleHint.

pub unsafe fn style_name(&self) -> CppBox<QString>

Returns the style name of the matched window system font on systems that support it.

Calls C++ function: QString QFontInfo::styleName() const.

C++ documentation:

Returns the style name of the matched window system font on systems that support it.

This function was introduced in Qt 4.8.

See also QFont::styleName().

pub unsafe fn swap(&self, other: impl CastInto<Ref<QFontInfo>>)

Swaps this font info instance with other. This function is very fast and never fails.

Calls C++ function: void QFontInfo::swap(QFontInfo& other).

C++ documentation:

Swaps this font info instance with other. This function is very fast and never fails.

This function was introduced in Qt 5.0.

pub unsafe fn underline(&self) -> bool

Calls C++ function: bool QFontInfo::underline() const.

pub unsafe fn weight(&self) -> c_int

Returns the weight of the matched window system font.

Calls C++ function: int QFontInfo::weight() const.

C++ documentation:

Returns the weight of the matched window system font.

See also QFont::weight() and bold().

Trait Implementations

impl CppDeletable for QFontInfo

unsafe fn delete(&self)

Destroys the font info object.

Calls C++ function: [destructor] void QFontInfo::~QFontInfo().

C++ documentation:

Destroys the font info object.