QFont¶
Synopsis¶
Functions¶
def
__eq__
(arg__1)def
__lt__
(arg__1)def
__ne__
(arg__1)def
bold
()def
capitalization
()def
defaultFamily
()def
exactMatch
()def
families
()def
family
()def
fixedPitch
()def
fromString
(arg__1)def
hintingPreference
()def
isCopyOf
(arg__1)def
italic
()def
kerning
()def
key
()def
lastResortFamily
()def
lastResortFont
()def
letterSpacing
()def
letterSpacingType
()def
overline
()def
pixelSize
()def
pointSize
()def
pointSizeF
()def
rawMode
()def
rawName
()def
resolve
()def
resolve
(arg__1)def
resolve
(mask)def
setBold
(arg__1)def
setCapitalization
(arg__1)def
setFamilies
(arg__1)def
setFamily
(arg__1)def
setFixedPitch
(arg__1)def
setHintingPreference
(hintingPreference)def
setItalic
(b)def
setKerning
(arg__1)def
setLetterSpacing
(type, spacing)def
setOverline
(arg__1)def
setPixelSize
(arg__1)def
setPointSize
(arg__1)def
setPointSizeF
(arg__1)def
setRawMode
(arg__1)def
setRawName
(arg__1)def
setStretch
(arg__1)def
setStrikeOut
(arg__1)def
setStyle
(style)def
setStyleHint
(arg__1[, strategy=PreferDefault])def
setStyleName
(arg__1)def
setStyleStrategy
(s)def
setUnderline
(arg__1)def
setWeight
(arg__1)def
setWordSpacing
(spacing)def
stretch
()def
strikeOut
()def
style
()def
styleHint
()def
styleName
()def
styleStrategy
()def
swap
(other)def
toString
()def
underline
()def
weight
()def
wordSpacing
()
Static functions¶
def
cacheStatistics
()def
cleanup
()def
initialize
()def
insertSubstitution
(arg__1, arg__2)def
insertSubstitutions
(arg__1, arg__2)def
removeSubstitutions
(arg__1)def
substitute
(arg__1)def
substitutes
(arg__1)def
substitutions
()
Detailed Description¶
QFont
can be regarded as a query for one or more fonts on the system.When you create a
QFont
object you specify various attributes that you want the font to have. Qt will use the font with the specified attributes, or if no matching font exists, Qt will use the closest matching installed font. The attributes of the font that is actually used are retrievable from aQFontInfo
object. If the window system provides an exact matchexactMatch()
returnstrue
. UseQFontMetricsF
to get measurements, e.g. the pixel length of a string usingwidth()
.Attributes which are not specifically set will not affect the font selection algorithm, and default values will be preferred instead.
To load a specific physical font, typically represented by a single file, use
QRawFont
instead.Note that a
QGuiApplication
instance must exist before aQFont
can be used. You can set the application’s default font withsetFont()
.If a chosen font does not include all the characters that need to be displayed,
QFont
will try to find the characters in the nearest equivalent fonts. When aQPainter
draws a character from a font theQFont
will report whether or not it has the character; if it does not,QPainter
will draw an unfilled square.Create QFonts like this:
serifFont = QFont("Times", 10, QFont.Bold) sansFont = QFont("Helvetica [Cronyx]", 12)The attributes set in the constructor can also be set later, e.g.
setFamily()
,setPointSize()
,setPointSizeF()
,setWeight()
andsetItalic()
. The remaining attributes must be set after contstruction, e.g.setBold()
,setUnderline()
,setOverline()
,setStrikeOut()
andsetFixedPitch()
.QFontInfo
objects should be created after the font’s attributes have been set. AQFontInfo
object will not change, even if you change the font’s attributes. The corresponding “get” functions, e.g.family()
,pointSize()
, etc., return the values that were set, even though the values used may differ. The actual values are available from aQFontInfo
object.If the requested font family is unavailable you can influence the
font matching algorithm
by choosing a particularStyleHint
andStyleStrategy
withsetStyleHint()
. The default family (corresponding to the current style hint) is returned bydefaultFamily()
.You can provide substitutions for font family names using
insertSubstitution()
andinsertSubstitutions()
. Substitutions can be removed withremoveSubstitutions()
. Usesubstitute()
to retrieve a family’s first substitute, or the family name itself if it has no substitutes. Usesubstitutes()
to retrieve a list of a family’s substitutes (which may be empty). After substituting a font, you must trigger the updating of the font by destroying and re-creating allQFont
objects.Every
QFont
has akey()
which you can use, for example, as the key in a cache or dictionary. If you want to store a user’s font preferences you could useQSettings
, writing the font information withtoString()
and reading it back withfromString()
. The operator<<() and operator>>() functions are also available, but they work on a data stream.It is possible to set the height of characters shown on the screen to a specified number of pixels with
setPixelSize()
; however usingsetPointSize()
has a similar effect and provides device independence.Loading fonts can be expensive, especially on X11.
QFont
contains extensive optimizations to make the copying ofQFont
objects fast, and to cache the results of the slow window system functions it depends upon.The font matching algorithm works as follows:
The specified font families (set by
setFamilies()
) are searched for.If not found, then if set the specified font family exists and can be used to represent the writing system in use, it will be selected.
If not, a replacement font that supports the writing system is selected. The font matching algorithm will try to find the best match for all the properties set in the
QFont
. How this is done varies from platform to platform.If no font exists on the system that can support the text, then special “missing character” boxes will be shown in its place.
Note
If the selected font, though supporting the writing system in general, is missing glyphs for one or more specific characters, then Qt will try to find a fallback font for this or these particular characters. This feature can be disabled using
NoFontMerging
style strategy.In Windows a request for the “Courier” font is automatically changed to “Courier New”, an improved version of Courier that allows for smooth scaling. The older “Courier” bitmap font can be selected by setting the
PreferBitmap
style strategy (seesetStyleStrategy()
).Once a font is found, the remaining attributes are matched in order of priority:
pointSize()
(see below)If you have a font which matches on family, even if none of the other attributes match, this font will be chosen in preference to a font which doesn’t match on family but which does match on the other attributes. This is because font family is the dominant search criteria.
The point size is defined to match if it is within 20% of the requested point size. When several fonts match and are only distinguished by point size, the font with the closest point size to the one requested will be chosen.
The actual family, font size, weight and other font attributes used for drawing text will depend on what’s available for the chosen family under the window system. A
QFontInfo
object can be used to determine the actual values used for drawing the text.Examples:
f = QFont("Helvetica")If you had both an Adobe and a Cronyx Helvetica, you might get either.
f = QFont("Helvetica [Cronyx]")You can specify the foundry you want in the family name. The font f in the above example will be set to “Helvetica [Cronyx]”.
To determine the attributes of the font actually used in the window system, use a
QFontInfo
object, e.g.info = QFontInfo(f1) family = info.family()To find out font metrics use a
QFontMetrics
object, e.g.fm = QFontMetrics(f1) textWidthInPixels = fm.width("How many pixels wide is this text?") textHeightInPixels = fm.height()For more general information on fonts, see the comp.fonts FAQ . Information on encodings can be found from Roman Czyborra’s page.
- class PySide2.QtGui.QFont¶
PySide2.QtGui.QFont(font)
PySide2.QtGui.QFont(font, pd)
PySide2.QtGui.QFont(font, pd)
PySide2.QtGui.QFont(family[, pointSize=-1[, weight=-1[, italic=false]]])
- param pd:
- param font:
- param italic:
bool
- param pointSize:
int
- param weight:
int
- param family:
str
Constructs a font object that uses the application’s default font.
Constructs a font that is a copy of
font
.Constructs a font object with the specified
family
,pointSize
,weight
anditalic
settings.If
pointSize
is zero or negative, the point size of the font is set to a system-dependent default value. Generally, this is 12 points.The
family
name may optionally also include a foundry name, e.g. “Helvetica [Cronyx]”. If thefamily
is available from more than one foundry and the foundry isn’t specified, an arbitrary foundry is chosen. If the family isn’t available a family will be set using thefont matching
algorithm.See also
Weight
setFamily()
setPointSize()
setWeight()
setItalic()
setStyleHint()
font()
- PySide2.QtGui.QFont.StyleHint¶
Style hints are used by the
font matching
algorithm to find an appropriate default family if a selected font family is not available.Constant
Description
QFont.AnyStyle
leaves the font matching algorithm to choose the family. This is the default.
QFont.SansSerif
the font matcher prefer sans serif fonts.
QFont.Helvetica
is a synonym for
SansSerif
.QFont.Serif
the font matcher prefers serif fonts.
QFont.Times
is a synonym for
Serif
.QFont.TypeWriter
the font matcher prefers fixed pitch fonts.
QFont.Courier
a synonym for
TypeWriter
.QFont.OldEnglish
the font matcher prefers decorative fonts.
QFont.Decorative
is a synonym for
OldEnglish
.QFont.Monospace
the font matcher prefers fonts that map to the CSS generic font-family ‘monospace’.
QFont.Fantasy
the font matcher prefers fonts that map to the CSS generic font-family ‘fantasy’.
QFont.Cursive
the font matcher prefers fonts that map to the CSS generic font-family ‘cursive’.
QFont.System
the font matcher prefers system fonts.
- PySide2.QtGui.QFont.StyleStrategy¶
The style strategy tells the
font matching
algorithm what type of fonts should be used to find an appropriate default family.The following strategies are available:
Constant
Description
QFont.PreferDefault
the default style strategy. It does not prefer any type of font.
QFont.PreferBitmap
prefers bitmap fonts (as opposed to outline fonts).
QFont.PreferDevice
prefers device fonts.
QFont.PreferOutline
prefers outline fonts (as opposed to bitmap fonts).
QFont.ForceOutline
forces the use of outline fonts.
QFont.NoAntialias
don’t antialias the fonts.
QFont.NoSubpixelAntialias
avoid subpixel antialiasing on the fonts if possible.
QFont.PreferAntialias
antialias if possible.
QFont.OpenGLCompatible
This style strategy has been deprecated since Qt 5.15.0. All fonts are OpenGL-compatible by default.
QFont.NoFontMerging
If the font selected for a certain writing system does not contain a character requested to draw, then Qt automatically chooses a similar looking font that contains the character. The flag disables this feature. Please note that enabling this flag will not prevent Qt from automatically picking a suitable font when the selected font does not support the writing system of the text.
QFont.PreferNoShaping
Sometimes, a font will apply complex rules to a set of characters in order to display them correctly. In some writing systems, such as Brahmic scripts, this is required in order for the text to be legible, but in e.g. Latin script, it is merely a cosmetic feature. The flag will disable all such features when they are not required, which will improve performance in most cases (since Qt 5.10).
Any of these may be OR-ed with one of these flags:
Constant
Description
QFont.PreferMatch
prefer an exact match. The font matcher will try to use the exact font size that has been specified.
QFont.PreferQuality
prefer the best quality font. The font matcher will use the nearest standard point size that the font supports.
QFont.ForceIntegerMetrics
This style strategy has been deprecated since Qt 5.15.0. Use
QFontMetrics
to retrieve rounded font metrics.
- PySide2.QtGui.QFont.HintingPreference¶
This enum describes the different levels of hinting that can be applied to glyphs to improve legibility on displays where it might be warranted by the density of pixels.
Constant
Description
QFont.PreferDefaultHinting
Use the default hinting level for the target platform.
QFont.PreferNoHinting
If possible, render text without hinting the outlines of the glyphs. The text layout will be typographically accurate and scalable, using the same metrics as are used e.g. when printing.
QFont.PreferVerticalHinting
If possible, render text with no horizontal hinting, but align glyphs to the pixel grid in the vertical direction. The text will appear crisper on displays where the density is too low to give an accurate rendering of the glyphs. But since the horizontal metrics of the glyphs are unhinted, the text’s layout will be scalable to higher density devices (such as printers) without impacting details such as line breaks.
QFont.PreferFullHinting
If possible, render text with hinting in both horizontal and vertical directions. The text will be altered to optimize legibility on the target device, but since the metrics will depend on the target size of the text, the positions of glyphs, line breaks, and other typographical detail will not scale, meaning that a text layout may look different on devices with different pixel densities.
Please note that this enum only describes a preference, as the full range of hinting levels are not supported on all of Qt’s supported platforms. The following table details the effect of a given hinting preference on a selected set of target platforms.
Windows Vista (w/o Platform Update) and earlier
Full hinting
Full hinting
Full hinting
Full hinting
Windows 7 and Windows Vista (w/Platform Update) and DirectWrite enabled in Qt
Full hinting
Vertical hinting
Vertical hinting
Full hinting
FreeType
Operating System setting
No hinting
Vertical hinting (light)
Full hinting
Cocoa on macOS
No hinting
No hinting
No hinting
No hinting
Note
Please be aware that altering the hinting preference on Windows is available through the DirectWrite font engine. This is available on Windows Vista after installing the platform update, and on Windows 7. In order to use this extension, configure Qt using -directwrite. The target application will then depend on the availability of DirectWrite on the target system.
New in version 4.8.
- PySide2.QtGui.QFont.Weight¶
Qt uses a weighting scale from 0 to 99 similar to, but not the same as, the scales used in Windows or CSS. A weight of 0 will be thin, whilst 99 will be extremely black.
This enum contains the predefined font weights:
Constant
Description
QFont.Thin
0
QFont.ExtraLight
12
QFont.Light
25
QFont.Normal
50
QFont.Medium
57
QFont.DemiBold
63
QFont.Bold
75
QFont.ExtraBold
81
QFont.Black
87
- PySide2.QtGui.QFont.Style¶
This enum describes the different styles of glyphs that are used to display text.
Constant
Description
QFont.StyleNormal
Normal glyphs used in unstyled text.
QFont.StyleItalic
Italic glyphs that are specifically designed for the purpose of representing italicized text.
QFont.StyleOblique
Glyphs with an italic appearance that are typically based on the unstyled glyphs, but are not fine-tuned for the purpose of representing italicized text.
See also
Weight
- PySide2.QtGui.QFont.Stretch¶
Predefined stretch values that follow the CSS naming convention. The higher the value, the more stretched the text is.
Constant
Description
QFont.AnyStretch
0 Accept any stretch matched using the other
QFont
properties (added in Qt 5.8)QFont.UltraCondensed
50
QFont.ExtraCondensed
62
QFont.Condensed
75
QFont.SemiCondensed
87
QFont.Unstretched
100
QFont.SemiExpanded
112
QFont.Expanded
125
QFont.ExtraExpanded
150
QFont.UltraExpanded
200
See also
- PySide2.QtGui.QFont.Capitalization¶
Rendering option for text this font applies to.
Constant
Description
QFont.MixedCase
This is the normal text rendering option where no capitalization change is applied.
QFont.AllUppercase
This alters the text to be rendered in all uppercase type.
QFont.AllLowercase
This alters the text to be rendered in all lowercase type.
QFont.SmallCaps
This alters the text to be rendered in small-caps type.
QFont.Capitalize
This alters the text to be rendered with the first character of each word as an uppercase character.
- PySide2.QtGui.QFont.SpacingType¶
Constant
Description
QFont.PercentageSpacing
A value of 100 will keep the spacing unchanged; a value of 200 will enlarge the spacing after a character by the width of the character itself.
QFont.AbsoluteSpacing
A positive value increases the letter spacing by the corresponding pixels; a negative value decreases the spacing.
- PySide2.QtGui.QFont.bold()¶
- Return type:
bool
Returns
true
ifweight()
is a value greater thanMedium
; otherwise returnsfalse
.
- static PySide2.QtGui.QFont.cacheStatistics()¶
Internal function that dumps font cache statistics.
- PySide2.QtGui.QFont.capitalization()¶
- Return type:
Returns the current capitalization type of the font.
See also
- static PySide2.QtGui.QFont.cleanup()¶
- PySide2.QtGui.QFont.defaultFamily()¶
- Return type:
str
Returns the family name that corresponds to the current style hint.
See also
StyleHint
styleHint()
setStyleHint()
- PySide2.QtGui.QFont.exactMatch()¶
- Return type:
bool
Returns
true
if a window system font exactly matching the settings of this font is available.See also
- PySide2.QtGui.QFont.families()¶
- Return type:
list of strings
Returns the requested font family names, i.e. the names set in the last
setFamilies()
call or via the constructor. Otherwise it returns an empty list.
- PySide2.QtGui.QFont.family()¶
- Return type:
str
Returns the requested font family name, i.e. the name set in the constructor or the last setFont() call.
See also
- PySide2.QtGui.QFont.fixedPitch()¶
- Return type:
bool
Returns
true
if fixed pitch has been set; otherwise returnsfalse
.See also
- PySide2.QtGui.QFont.fromString(arg__1)¶
- Parameters:
arg__1 – str
- Return type:
bool
Sets this font to match the description
descrip
. The description is a comma-separated list of the font attributes, as returned bytoString()
.See also
- PySide2.QtGui.QFont.hintingPreference()¶
- Return type:
Returns the currently preferred hinting level for glyphs rendered with this font.
See also
- static PySide2.QtGui.QFont.initialize()¶
- static PySide2.QtGui.QFont.insertSubstitution(arg__1, arg__2)¶
- Parameters:
arg__1 – str
arg__2 – str
Inserts
substituteName
into the substitution table for the familyfamilyName
.After substituting a font, trigger the updating of the font by destroying and re-creating all
QFont
objects.
- static PySide2.QtGui.QFont.insertSubstitutions(arg__1, arg__2)¶
- Parameters:
arg__1 – str
arg__2 – list of strings
Inserts the list of families
substituteNames
into the substitution list forfamilyName
.After substituting a font, trigger the updating of the font by destroying and re-creating all
QFont
objects.
- PySide2.QtGui.QFont.isCopyOf(arg__1)¶
- Parameters:
arg__1 –
PySide2.QtGui.QFont
- Return type:
bool
Returns
true
if this font andf
are copies of each other, i.e. one of them was created as a copy of the other and neither has been modified since. This is much stricter than equality.See also
operator=()
operator==()
- PySide2.QtGui.QFont.italic()¶
- Return type:
bool
Returns
true
if thestyle()
of the font is notStyleNormal
See also
- PySide2.QtGui.QFont.kerning()¶
- Return type:
bool
Returns
true
if kerning should be used when drawing text with this font.See also
- PySide2.QtGui.QFont.key()¶
- Return type:
str
Returns the font’s key, a textual representation of a font. It is typically used as the key for a cache or dictionary of fonts.
See also
QMap
- PySide2.QtGui.QFont.lastResortFamily()¶
- Return type:
str
Note
This function is deprecated.
This function is deprecated and is not in use by the font selection algorithm in Qt 5. It always returns “helvetica”.
See also
- PySide2.QtGui.QFont.lastResortFont()¶
- Return type:
str
Note
This function is deprecated.
Deprecated function. Since Qt 5.0, this is not used by the font selection algorithm. For compatibility it remains in the API, but will always return the same value as
lastResortFamily()
.
- PySide2.QtGui.QFont.letterSpacing()¶
- Return type:
float
Returns the letter spacing for the font.
- PySide2.QtGui.QFont.letterSpacingType()¶
- Return type:
Returns the spacing type used for letter spacing.
- PySide2.QtGui.QFont.__ne__(arg__1)¶
- Parameters:
arg__1 –
PySide2.QtGui.QFont
- Return type:
bool
Returns
true
if this font is different fromf
; otherwise returnsfalse
.Two QFonts are considered to be different if their font attributes are different.
See also
operator==()
- PySide2.QtGui.QFont.__lt__(arg__1)¶
- Parameters:
arg__1 –
PySide2.QtGui.QFont
- Return type:
bool
- PySide2.QtGui.QFont.__eq__(arg__1)¶
- Parameters:
arg__1 –
PySide2.QtGui.QFont
- Return type:
bool
Returns
true
if this font is equal tof
; otherwise returns false.Two QFonts are considered equal if their font attributes are equal.
See also
operator!=()
isCopyOf()
- PySide2.QtGui.QFont.overline()¶
- Return type:
bool
Returns
true
if overline has been set; otherwise returnsfalse
.See also
- PySide2.QtGui.QFont.pixelSize()¶
- Return type:
int
Returns the pixel size of the font if it was set with
setPixelSize()
. Returns -1 if the size was set withsetPointSize()
orsetPointSizeF()
.See also
- PySide2.QtGui.QFont.pointSize()¶
- Return type:
int
Returns the point size of the font. Returns -1 if the font size was specified in pixels.
See also
- PySide2.QtGui.QFont.pointSizeF()¶
- Return type:
float
Returns the point size of the font. Returns -1 if the font size was specified in pixels.
- PySide2.QtGui.QFont.rawMode()¶
- Return type:
bool
Returns
true
if raw mode is used for font name matching; otherwise returnsfalse
.See also
- PySide2.QtGui.QFont.rawName()¶
- Return type:
str
Note
This function is deprecated.
Returns the name of the font within the underlying window system.
On X11, this function will return an empty string.
Using the return value of this function is usually not portable .
See also
- static PySide2.QtGui.QFont.removeSubstitutions(arg__1)¶
- Parameters:
arg__1 – str
Removes all the substitutions for
familyName
.
- PySide2.QtGui.QFont.resolve()¶
- Return type:
uint
- PySide2.QtGui.QFont.resolve(mask)
- Parameters:
mask –
uint
- PySide2.QtGui.QFont.resolve(arg__1)
- Parameters:
arg__1 –
PySide2.QtGui.QFont
- Return type:
Returns a new
QFont
that has attributes copied fromother
that have not been previously set on this font.
- PySide2.QtGui.QFont.setBold(arg__1)¶
- Parameters:
arg__1 – bool
If
enable
is true sets the font’s weight toBold
; otherwise sets the weight toNormal
.For finer boldness control use
setWeight()
.Note
If
styleName()
is set, this value may be ignored, or if supported on the platform, the font artificially embolded.See also
- PySide2.QtGui.QFont.setCapitalization(arg__1)¶
- Parameters:
arg__1 –
Capitalization
Sets the capitalization of the text in this font to
caps
.A font’s capitalization makes the text appear in the selected capitalization mode.
See also
- PySide2.QtGui.QFont.setFamilies(arg__1)¶
- Parameters:
arg__1 – list of strings
Sets the list of family names for the font. The names are case insensitive and may include a foundry name. The first family in
families
will be set as the main family for the font.Each family name entry in
families
may optionally also include a foundry name, e.g. “Helvetica [Cronyx]”. If the family is available from more than one foundry and the foundry isn’t specified, an arbitrary foundry is chosen. If the family isn’t available a family will be set using thefont matching
algorithm.See also
- PySide2.QtGui.QFont.setFamily(arg__1)¶
- Parameters:
arg__1 – str
Sets the family name of the font. The name is case insensitive and may include a foundry name.
The
family
name may optionally also include a foundry name, e.g. “Helvetica [Cronyx]”. If thefamily
is available from more than one foundry and the foundry isn’t specified, an arbitrary foundry is chosen. If the family isn’t available a family will be set using thefont matching
algorithm.See also
- PySide2.QtGui.QFont.setFixedPitch(arg__1)¶
- Parameters:
arg__1 – bool
If
enable
is true, sets fixed pitch on; otherwise sets fixed pitch off.See also
- PySide2.QtGui.QFont.setHintingPreference(hintingPreference)¶
- Parameters:
hintingPreference –
HintingPreference
Set the preference for the hinting level of the glyphs to
hintingPreference
. This is a hint to the underlying font rendering system to use a certain level of hinting, and has varying support across platforms. See the table in the documentation forHintingPreference
for more details.The default hinting preference is
PreferDefaultHinting
.See also
- PySide2.QtGui.QFont.setItalic(b)¶
- Parameters:
b – bool
Sets the
style()
of the font toStyleItalic
ifenable
is true; otherwise the style is set toStyleNormal
.Note
If
styleName()
is set, this value may be ignored, or if supported on the platform, the font may be rendered tilted instead of picking a designed italic font-variant.
- PySide2.QtGui.QFont.setKerning(arg__1)¶
- Parameters:
arg__1 – bool
Enables kerning for this font if
enable
is true; otherwise disables it. By default, kerning is enabled.When kerning is enabled, glyph metrics do not add up anymore, even for Latin text. In other words, the assumption that width(‘a’) + width(‘b’) is equal to width(“ab”) is not necessarily true.
See also
- PySide2.QtGui.QFont.setLetterSpacing(type, spacing)¶
- Parameters:
type –
SpacingType
spacing – float
Sets the letter spacing for the font to
spacing
and the type of spacing totype
.Letter spacing changes the default spacing between individual letters in the font. The spacing between the letters can be made smaller as well as larger either in percentage of the character width or in pixels, depending on the selected spacing type.
- PySide2.QtGui.QFont.setOverline(arg__1)¶
- Parameters:
arg__1 – bool
If
enable
is true, sets overline on; otherwise sets overline off.See also
- PySide2.QtGui.QFont.setPixelSize(arg__1)¶
- Parameters:
arg__1 – int
Sets the font size to
pixelSize
pixels.Using this function makes the font device dependent. Use
setPointSize()
orsetPointSizeF()
to set the size of the font in a device independent manner.See also
- PySide2.QtGui.QFont.setPointSize(arg__1)¶
- Parameters:
arg__1 – int
Sets the point size to
pointSize
. The point size must be greater than zero.See also
- PySide2.QtGui.QFont.setPointSizeF(arg__1)¶
- Parameters:
arg__1 – float
Sets the point size to
pointSize
. The point size must be greater than zero. The requested precision may not be achieved on all platforms.See also
- PySide2.QtGui.QFont.setRawMode(arg__1)¶
- Parameters:
arg__1 – bool
If
enable
is true, turns raw mode on; otherwise turns raw mode off. This function only has an effect under X11.If raw mode is enabled, Qt will search for an X font with a complete font name matching the family name, ignoring all other values set for the
QFont
. If the font name matches several fonts, Qt will use the first font returned by X.QFontInfo
cannot be used to fetch information about aQFont
using raw mode (it will return the values set in theQFont
for all parameters, including the family name).Warning
Enabling raw mode has no effect since Qt 5.0.
See also
- PySide2.QtGui.QFont.setRawName(arg__1)¶
- Parameters:
arg__1 – str
Note
This function is deprecated.
Sets a font by its system specific name.
A font set with is still a full-featured
QFont
. It can be queried (for example withitalic()
) or modified (for example withsetItalic()
) and is therefore also suitable for rendering rich text.If Qt’s internal font database cannot resolve the raw name, the font becomes a raw font with
name
as its family.See also
- PySide2.QtGui.QFont.setStretch(arg__1)¶
- Parameters:
arg__1 – int
Sets the stretch factor for the font.
The stretch factor matches a condensed or expanded version of the font or applies a stretch transform that changes the width of all characters in the font by
factor
percent. For example, settingfactor
to 150 results in all characters in the font being 1.5 times (ie. 150%) wider. The minimum stretch factor is 1, and the maximum stretch factor is 4000. The default stretch factor isAnyStretch
, which will accept any stretch factor and not apply any transform on the font.The stretch factor is only applied to outline fonts. The stretch factor is ignored for bitmap fonts.
Note
When matching a font with a native non-default stretch factor, requesting a stretch of 100 will stretch it back to a medium width font.
See also
stretch()
Stretch
- PySide2.QtGui.QFont.setStrikeOut(arg__1)¶
- Parameters:
arg__1 – bool
If
enable
is true, sets strikeout on; otherwise sets strikeout off.See also
- PySide2.QtGui.QFont.setStyle(style)¶
- Parameters:
style –
Style
Sets the style of the font to
style
.
- PySide2.QtGui.QFont.setStyleHint(arg__1[, strategy=PreferDefault])¶
- Parameters:
arg__1 –
StyleHint
strategy –
StyleStrategy
Sets the style hint and strategy to
hint
andstrategy
, respectively.If these aren’t set explicitly the style hint will default to
AnyStyle
and the style strategy toPreferDefault
.Qt does not support style hints on X11 since this information is not provided by the window system.
See also
StyleHint
styleHint()
StyleStrategy
styleStrategy()
QFontInfo
- PySide2.QtGui.QFont.setStyleName(arg__1)¶
- Parameters:
arg__1 – str
Sets the style name of the font to
styleName
. When set, other style properties likestyle()
andweight()
will be ignored for font matching, though they may be simulated afterwards if supported by the platform’s font engine.Due to the lower quality of artificially simulated styles, and the lack of full cross platform support, it is not recommended to use matching by style name together with matching by style properties
See also
- PySide2.QtGui.QFont.setStyleStrategy(s)¶
- Parameters:
s –
StyleStrategy
Sets the style strategy for the font to
s
.See also
styleStrategy()
StyleStrategy
- PySide2.QtGui.QFont.setUnderline(arg__1)¶
- Parameters:
arg__1 – bool
If
enable
is true, sets underline on; otherwise sets underline off.See also
- PySide2.QtGui.QFont.setWeight(arg__1)¶
- Parameters:
arg__1 – int
Sets the weight of the font to
weight
, using the scale defined byWeight
enumeration.Note
If
styleName()
is set, this value may be ignored for font selection.
- PySide2.QtGui.QFont.setWordSpacing(spacing)¶
- Parameters:
spacing – float
Sets the word spacing for the font to
spacing
.Word spacing changes the default spacing between individual words. A positive value increases the word spacing by a corresponding amount of pixels, while a negative value decreases the inter-word spacing accordingly.
Word spacing will not apply to writing systems, where indiviaul words are not separated by white space.
See also
- PySide2.QtGui.QFont.stretch()¶
- Return type:
int
Returns the stretch factor for the font.
See also
- PySide2.QtGui.QFont.strikeOut()¶
- Return type:
bool
Returns
true
if strikeout has been set; otherwise returnsfalse
.See also
- PySide2.QtGui.QFont.style()¶
- Return type:
Returns the style of the font.
See also
- PySide2.QtGui.QFont.styleHint()¶
- Return type:
Returns the
StyleHint
.The style hint affects the
font matching algorithm
. SeeStyleHint
for the list of available hints.See also
setStyleHint()
StyleStrategy
styleHint()
- PySide2.QtGui.QFont.styleName()¶
- Return type:
str
Returns the requested font style name. This can be used to match the font with irregular styles (that can’t be normalized in other style properties).
See also
- PySide2.QtGui.QFont.styleStrategy()¶
- Return type:
Returns the
StyleStrategy
.The style strategy affects the
font matching
algorithm. SeeStyleStrategy
for the list of available strategies.See also
setStyleStrategy()
setStyleHint()
StyleHint
- static PySide2.QtGui.QFont.substitute(arg__1)¶
- Parameters:
arg__1 – str
- Return type:
str
Returns the first family name to be used whenever
familyName
is specified. The lookup is case insensitive.If there is no substitution for
familyName
,familyName
is returned.To obtain a list of substitutions use
substitutes()
.
- static PySide2.QtGui.QFont.substitutes(arg__1)¶
- Parameters:
arg__1 – str
- Return type:
list of strings
Returns a list of family names to be used whenever
familyName
is specified. The lookup is case insensitive.If there is no substitution for
familyName
, an empty list is returned.
- static PySide2.QtGui.QFont.substitutions()¶
- Return type:
list of strings
Returns a sorted list of substituted family names.
See also
insertSubstitution()
removeSubstitution()
substitute()
- PySide2.QtGui.QFont.swap(other)¶
- Parameters:
other –
PySide2.QtGui.QFont
Swaps this font instance with
other
. This function is very fast and never fails.
- PySide2.QtGui.QFont.toString()¶
- Return type:
str
Returns a description of the font. The description is a comma-separated list of the attributes, perfectly suited for use in
QSettings
, and consists of the following:Font family
Point size
Pixel size
Style hint
Font weight
Font style
Underline
Strike out
Fixed pitch
Always 0
Capitalization
Letter spacing
Word spacing
Stretch
Style strategy
Font style (omitted when unavailable)
See also
- PySide2.QtGui.QFont.underline()¶
- Return type:
bool
Returns
true
if underline has been set; otherwise returnsfalse
.See also
- PySide2.QtGui.QFont.weight()¶
- Return type:
int
Returns the weight of the font, using the same scale as the
Weight
enumeration.See also
setWeight()
Weight
QFontInfo
- PySide2.QtGui.QFont.wordSpacing()¶
- Return type:
float
Returns the word spacing for the font.
See also
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