Struct pangocairo::FontMap
source · #[repr(transparent)]pub struct FontMap { /* private fields */ }
Expand description
FontMap
is an interface exported by font maps for
use with Cairo.
The actual type of the font map will depend on the particular font technology Cairo was compiled to use.
Implements
FontMapExt
, trait@pango::prelude::FontMapExt
, FontMapExtManual
Implementations§
source§impl FontMap
impl FontMap
pub const NONE: Option<&'static FontMap> = None
sourcepub fn default() -> Option<FontMap>
pub fn default() -> Option<FontMap>
Gets a default FontMap
to use with Cairo.
Note that the type of the returned object will depend on the
particular font backend Cairo was compiled to use; you generally
should only use the pango::FontMap
and FontMap
interfaces on the returned object.
The default Cairo fontmap can be changed by using
[methodPangoCairo
.set_default]. This can be used to
change the Cairo font backend that the default fontmap uses
for example.
Note that since Pango 1.32.6, the default fontmap is per-thread. Each thread gets its own default fontmap. In this way, PangoCairo can be used safely from multiple threads.
Returns
the default PangoCairo fontmap for the current thread. This object is owned by Pango and must not be freed.
source§impl FontMap
impl FontMap
pub fn for_font_type(fonttype: FontType) -> Option<FontMap>
sourcepub fn new() -> Option<FontMap>
pub fn new() -> Option<FontMap>
Creates a new FontMap
object.
A fontmap is used to cache information about available fonts,
and holds certain global parameters such as the resolution.
In most cases, you can use func
PangoCairo`]
instead.
Note that the type of the returned object will depend
on the particular font backend Cairo was compiled to use;
You generally should only use the pango::FontMap
and
FontMap
interfaces on the returned object.
You can override the type of backend returned by using an
environment variable PANGOCAIRO_BACKEND
. Supported types,
based on your build, are fc (fontconfig), win32, and coretext.
If requested type is not available, NULL is returned. Ie.
this is only useful for testing, when at least two backends
are compiled in.
Returns
the newly allocated pango::FontMap
,
which should be freed with g_object_unref()
.
pub fn set_default(font_map: Option<Self>)
Trait Implementations§
source§impl Ord for FontMap
impl Ord for FontMap
source§impl<OT: ObjectType> PartialEq<OT> for FontMap
impl<OT: ObjectType> PartialEq<OT> for FontMap
source§impl<OT: ObjectType> PartialOrd<OT> for FontMap
impl<OT: ObjectType> PartialOrd<OT> for FontMap
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moresource§impl StaticType for FontMap
impl StaticType for FontMap
source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for FontMap
impl IsA<FontMap> for FontMap
Auto Trait Implementations§
impl RefUnwindSafe for FontMap
impl !Send for FontMap
impl !Sync for FontMap
impl Unpin for FontMap
impl UnwindSafe for FontMap
Blanket Implementations§
source§impl<T> Cast for Twhere
T: ObjectType,
impl<T> Cast for Twhere T: ObjectType,
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unsafe fn unsafe_cast_ref<T>(&self) -> &Twhere T: ObjectType,
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unconditionally. Read moresource§impl<O> FontMapExt for Owhere
O: IsA<FontMap>,
impl<O> FontMapExt for Owhere O: IsA<FontMap>,
source§fn family(&self, name: &str) -> Option<FontFamily>
fn family(&self, name: &str) -> Option<FontFamily>
v1_46
only.source§fn list_families(&self) -> Vec<FontFamily, Global>
fn list_families(&self) -> Vec<FontFamily, Global>
source§fn load_font(&self, context: &Context, desc: &FontDescription) -> Option<Font>
fn load_font(&self, context: &Context, desc: &FontDescription) -> Option<Font>
source§fn load_fontset(
&self,
context: &Context,
desc: &FontDescription,
language: &Language
) -> Option<Fontset>
fn load_fontset( &self, context: &Context, desc: &FontDescription, language: &Language ) -> Option<Fontset>
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source§fn try_emit_with_values(
&self,
signal_id: SignalId,
args: &[Value]
) -> Result<Option<Value>, BoolError>
fn try_emit_with_values( &self, signal_id: SignalId, args: &[Value] ) -> Result<Option<Value>, BoolError>
Self::emit_with_values
but fails instead of panicking.source§fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>
fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>
Self::emit
but takes Value
for the arguments.source§fn try_emit_by_name<R>(
&self,
signal_name: &str,
args: &[&dyn ToValue]
) -> Result<R, BoolError>where
R: TryFromClosureReturnValue,
fn try_emit_by_name<R>( &self, signal_name: &str, args: &[&dyn ToValue] ) -> Result<R, BoolError>where R: TryFromClosureReturnValue,
Self::emit_by_name
but fails instead of panicking.source§fn emit_by_name<R>(&self, signal_name: &str, args: &[&dyn ToValue]) -> Rwhere
R: TryFromClosureReturnValue,
fn emit_by_name<R>(&self, signal_name: &str, args: &[&dyn ToValue]) -> Rwhere R: TryFromClosureReturnValue,
source§fn try_emit_by_name_with_values(
&self,
signal_name: &str,
args: &[Value]
) -> Result<Option<Value>, BoolError>
fn try_emit_by_name_with_values( &self, signal_name: &str, args: &[Value] ) -> Result<Option<Value>, BoolError>
Self::emit_by_name_with_values
but fails instead of panicking.source§fn emit_by_name_with_values(
&self,
signal_name: &str,
args: &[Value]
) -> Option<Value>
fn emit_by_name_with_values( &self, signal_name: &str, args: &[Value] ) -> Option<Value>
source§fn try_emit_by_name_with_details<R>(
&self,
signal_name: &str,
details: Quark,
args: &[&dyn ToValue]
) -> Result<R, BoolError>where
R: TryFromClosureReturnValue,
fn try_emit_by_name_with_details<R>( &self, signal_name: &str, details: Quark, args: &[&dyn ToValue] ) -> Result<R, BoolError>where R: TryFromClosureReturnValue,
Self::emit_by_name_with_details
but fails instead of panicking.source§fn emit_by_name_with_details<R>(
&self,
signal_name: &str,
details: Quark,
args: &[&dyn ToValue]
) -> Rwhere
R: TryFromClosureReturnValue,
fn emit_by_name_with_details<R>( &self, signal_name: &str, details: Quark, args: &[&dyn ToValue] ) -> Rwhere R: TryFromClosureReturnValue,
source§fn try_emit_by_name_with_details_and_values(
&self,
signal_name: &str,
details: Quark,
args: &[Value]
) -> Result<Option<Value>, BoolError>
fn try_emit_by_name_with_details_and_values( &self, signal_name: &str, details: Quark, args: &[Value] ) -> Result<Option<Value>, BoolError>
Self::emit_by_name_with_details_and_values
but fails instead of panicking.source§fn emit_by_name_with_details_and_values(
&self,
signal_name: &str,
details: Quark,
args: &[Value]
) -> Option<Value>
fn emit_by_name_with_details_and_values( &self, signal_name: &str, details: Quark, args: &[Value] ) -> Option<Value>
source§fn try_emit_with_details<R>(
&self,
signal_id: SignalId,
details: Quark,
args: &[&dyn ToValue]
) -> Result<R, BoolError>where
R: TryFromClosureReturnValue,
fn try_emit_with_details<R>( &self, signal_id: SignalId, details: Quark, args: &[&dyn ToValue] ) -> Result<R, BoolError>where R: TryFromClosureReturnValue,
Self::emit_with_details
but fails instead of panicking.source§fn emit_with_details<R>(
&self,
signal_id: SignalId,
details: Quark,
args: &[&dyn ToValue]
) -> Rwhere
R: TryFromClosureReturnValue,
fn emit_with_details<R>( &self, signal_id: SignalId, details: Quark, args: &[&dyn ToValue] ) -> Rwhere R: TryFromClosureReturnValue,
source§fn try_emit_with_details_and_values(
&self,
signal_id: SignalId,
details: Quark,
args: &[Value]
) -> Result<Option<Value>, BoolError>
fn try_emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value] ) -> Result<Option<Value>, BoolError>
Self::emit_with_details_and_values
but fails instead of panicking.source§fn emit_with_details_and_values(
&self,
signal_id: SignalId,
details: Quark,
args: &[Value]
) -> Option<Value>
fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value] ) -> Option<Value>
source§fn disconnect(&self, handler_id: SignalHandlerId)
fn disconnect(&self, handler_id: SignalHandlerId)
source§fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere
F: Fn(&T, &ParamSpec) + Send + Sync + 'static,
fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec) + Send + Sync + 'static,
notify
signal of the object. Read moresource§fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere
F: Fn(&T, &ParamSpec) + 'static,
fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec) + 'static,
notify
signal of the object. Read moresource§unsafe fn connect_notify_unsafe<F>(
&self,
name: Option<&str>,
f: F
) -> SignalHandlerIdwhere
F: Fn(&T, &ParamSpec),
unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec),
notify
signal of the object. Read more