Struct gtk4::FontDialog

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#[repr(transparent)]
pub struct FontDialog { /* private fields */ }
Available on crate feature v4_10 only.
Expand description

A FontDialog object collects the arguments that are needed to present a font chooser dialog to the user, such as a title for the dialog and whether it should be modal.

The dialog is shown with the choose_font() function or its variants. This API follows the GIO async pattern, and the result can be obtained by calling the corresponding finish function, such as Gtk::FontDialog::choose_font_finish().

See FontDialogButton for a convenient control that uses FontDialog and presents the results.

Properties

filter

Sets a filter to restrict what fonts are shown in the font chooser dialog.

Readable | Writeable

font-map

Sets a custom font map to select fonts from.

A custom font map can be used to present application-specific fonts instead of or in addition to the normal system fonts.

Readable | Writeable

language

The language for which the font features are selected.

Readable | Writeable

Whether the font chooser dialog is modal.

Readable | Writeable

title

A title that may be shown on the font chooser dialog that is presented by FontDialog::choose_font().

Readable | Writeable

Implements

glib::ObjectExt

Implementations§

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impl FontDialog

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pub fn new() -> FontDialog

Creates a new FontDialog object.

Returns

the new FontDialog

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pub fn builder() -> FontDialogBuilder

Creates a new builder-pattern struct instance to construct FontDialog objects.

This method returns an instance of FontDialogBuilder which can be used to create FontDialog objects.

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pub fn choose_face<P: FnOnce(Result<FontFace, Error>) + 'static>( &self, parent: Option<&impl IsA<Window>>, initial_value: Option<&impl IsA<FontFace>>, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

This function initiates a font selection operation by presenting a dialog to the user for selecting a font face (i.e. a font family and style, but not a specific font size).

The @callback will be called when the dialog is dismissed. It should call Gtk::FontDialog::choose_face_finish() to obtain the result.

parent

the parent Window

initial_value

the initial value

cancellable

a GCancellable to cancel the operation

callback

a callback to call when the operation is complete

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pub fn choose_face_future( &self, parent: Option<&(impl IsA<Window> + Clone + 'static)>, initial_value: Option<&(impl IsA<FontFace> + Clone + 'static)> ) -> Pin<Box_<dyn Future<Output = Result<FontFace, Error>> + 'static>>

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pub fn choose_family<P: FnOnce(Result<FontFamily, Error>) + 'static>( &self, parent: Option<&impl IsA<Window>>, initial_value: Option<&impl IsA<FontFamily>>, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

This function initiates a font selection operation by presenting a dialog to the user for selecting a font family.

The @callback will be called when the dialog is dismissed. It should call Gtk::FontDialog::choose_family_finish() to obtain the result.

parent

the parent Window

initial_value

the initial value

cancellable

a GCancellable to cancel the operation

callback

a callback to call when the operation is complete

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pub fn choose_family_future( &self, parent: Option<&(impl IsA<Window> + Clone + 'static)>, initial_value: Option<&(impl IsA<FontFamily> + Clone + 'static)> ) -> Pin<Box_<dyn Future<Output = Result<FontFamily, Error>> + 'static>>

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pub fn choose_font<P: FnOnce(Result<FontDescription, Error>) + 'static>( &self, parent: Option<&impl IsA<Window>>, initial_value: Option<&FontDescription>, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

This function initiates a font selection operation by presenting a dialog to the user for selecting a font.

The @callback will be called when the dialog is dismissed. It should call Gtk::FontDialog::choose_font_finish() to obtain the result.

If you want to let the user select font features as well, use choose_font_and_features() instead.

parent

the parent Window

initial_value

the font to select initially

cancellable

a GCancellable to cancel the operation

callback

a callback to call when the operation is complete

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pub fn choose_font_future( &self, parent: Option<&(impl IsA<Window> + Clone + 'static)>, initial_value: Option<&FontDescription> ) -> Pin<Box_<dyn Future<Output = Result<FontDescription, Error>> + 'static>>

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pub fn filter(&self) -> Option<Filter>

Returns the filter that decides which fonts to display in the font chooser dialog.

Returns

the filter

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pub fn font_map(&self) -> Option<FontMap>

Returns the fontmap from which fonts are selected, or NULL for the default fontmap.

Returns

the fontmap

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pub fn language(&self) -> Option<Language>

Returns the language for which font features are applied.

Returns

the language for font features

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pub fn is_modal(&self) -> bool

Returns whether the font chooser dialog blocks interaction with the parent window while it is presented.

Returns

TRUE if the font chooser dialog is modal

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pub fn title(&self) -> GString

Returns the title that will be shown on the font chooser dialog.

Returns

the title

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pub fn set_filter(&self, filter: Option<&impl IsA<Filter>>)

Adds a filter that decides which fonts to display in the font chooser dialog.

The Filter must be able to handle both pango::FontFamily and pango::FontFace objects.

filter

a Filter

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pub fn set_font_map(&self, fontmap: Option<&impl IsA<FontMap>>)

Sets the fontmap from which fonts are selected.

If @fontmap is NULL, the default fontmap is used.

fontmap

the fontmap

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pub fn set_language(&self, language: &Language)

Sets the language for which font features are applied.

language

the language for font features

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pub fn set_modal(&self, modal: bool)

Sets whether the font chooser dialog blocks interaction with the parent window while it is presented.

the new value

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pub fn set_title(&self, title: &str)

Sets the title that will be shown on the font chooser dialog.

title

the new title

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pub fn connect_filter_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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pub fn connect_font_map_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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pub fn connect_language_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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pub fn connect_modal_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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pub fn connect_title_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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impl FontDialog

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pub fn choose_font_and_features<P: FnOnce(Result<(Option<FontDescription>, GString, Language), Error>) + 'static>( &self, parent: Option<&impl IsA<Window>>, initial_value: Option<&FontDescription>, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

This function initiates a font selection operation by presenting a dialog to the user for selecting a font and font features.

Font features affect how the font is rendered, for example enabling glyph variants or ligatures.

The @callback will be called when the dialog is dismissed. It should call Gtk::FontDialog::choose_font_and_features_finish() to obtain the result.

parent

the parent Window

initial_value

the font to select initially

cancellable

a GCancellable to cancel the operation

callback

a callback to call when the operation is complete

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pub fn choose_font_and_features_future( &self, parent: Option<&(impl IsA<Window> + Clone + 'static)>, initial_value: Option<&FontDescription> ) -> Pin<Box_<dyn Future<Output = Result<(Option<FontDescription>, GString, Language), Error>> + 'static>>

Trait Implementations§

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impl Clone for FontDialog

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for FontDialog

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for FontDialog

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Display for FontDialog

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl HasParamSpec for FontDialog

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type ParamSpec = ParamSpecObject

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type SetValue = FontDialog

Preferred value to be used as setter for the associated ParamSpec.
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type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, FontDialog>

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fn param_spec_builder() -> Self::BuilderFn

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impl Hash for FontDialog

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fn hash<H>(&self, state: &mut H)where H: Hasher,

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for FontDialog

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fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval. Read more
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impl ParentClassIs for FontDialog

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impl<OT: ObjectType> PartialEq<OT> for FontDialog

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fn eq(&self, other: &OT) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<OT: ObjectType> PartialOrd<OT> for FontDialog

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fn partial_cmp(&self, other: &OT) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl StaticType for FontDialog

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fn static_type() -> Type

Returns the type identifier of Self.
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impl Eq for FontDialog

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impl<O> GObjectPropertyExpressionExt for Owhere O: IsA<Object>,

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fn property_expression(&self, property_name: &str) -> PropertyExpression

Create an expression looking up an object’s property.
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Create an expression looking up an object’s property with a weak reference.
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Create an expression looking up a property in the bound this object.
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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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Sets the property property_name of the object to value value. Read more
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Sets the property property_name of the object to value value. Read more
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Sets multiple properties of the object at once. Read more
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Sets multiple properties of the object at once. Read more
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Gets the property property_name of the object and cast it to the type V. Read more
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Check if the object has a property property_name of the given type_. Read more
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Get the type of the property property_name of this object. Read more
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Get the ParamSpec of the property property_name of this object.
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Return all ParamSpec of the properties of this object.
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Freeze all property notifications until the return guard object is dropped. Read more
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Retrieve previously set arbitrary data of this object with the given key. Read more
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Block a given signal handler. Read more
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Unblock a given signal handler.
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Stop emission of the currently emitted signal.
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Stop emission of the currently emitted signal by the (possibly detailed) signal name.
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Connect a closure to the signal signal_id on this object. Read more
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Limits the lifetime of closure to the lifetime of the object. When the object’s reference count drops to zero, the closure will be invalidated. An invalidated closure will ignore any calls to invoke_with_values, or invoke when using Rust closures.
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Emit signal by its name. Read more
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fn emit_by_name_with_details<R>( &self, signal_name: &str, details: Quark, args: &[&dyn ToValue] ) -> Rwhere R: TryFromClosureReturnValue,

Emit signal by its name with details. Read more
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fn emit_by_name_with_details_and_values( &self, signal_name: &str, details: Quark, args: &[Value] ) -> Option<Value>

Emit signal by its name with details. Read more
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fn emit_with_details<R>( &self, signal_id: SignalId, details: Quark, args: &[&dyn ToValue] ) -> Rwhere R: TryFromClosureReturnValue,

Emit signal by signal id with details. Read more
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fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value] ) -> Option<Value>

Emit signal by signal id with details. Read more
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fn disconnect(&self, handler_id: SignalHandlerId)

Disconnect a previously connected signal handler.
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fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec) + Send + Sync + 'static,

Connect to the notify signal of the object. Read more
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fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec) + 'static,

Connect to the notify signal of the object. Read more
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unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec),

Connect to the notify signal of the object. Read more
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fn notify(&self, property_name: &str)

Notify that the given property has changed its value. Read more
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fn notify_by_pspec(&self, pspec: &ParamSpec)

Notify that the given property has changed its value. Read more
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fn downgrade(&self) -> WeakRef<T>

Downgrade this object to a weak reference.
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fn add_weak_ref_notify<F>(&self, f: F) -> WeakRefNotify<T>where F: FnOnce() + Send + 'static,

Add a callback to be notified when the Object is disposed.
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fn add_weak_ref_notify_local<F>(&self, f: F) -> WeakRefNotify<T>where F: FnOnce() + 'static,

Add a callback to be notified when the Object is disposed. Read more
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fn bind_property<'f, 't, O, 'a>( &'a self, source_property: &'a str, target: &'a O, target_property: &'a str ) -> BindingBuilder<'a, 'f, 't>where O: ObjectType,

Bind property source_property on this object to the target_property on the target object. Read more
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fn ref_count(&self) -> u32

Returns the strong reference count of this object.
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unsafe fn run_dispose(&self)

Runs the dispose mechanism of the object. Read more
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impl<T> Property for Twhere T: HasParamSpec,

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type Value = T

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impl<T> PropertyGet for Twhere T: HasParamSpec,

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type Value = T

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fn get<R, F>(&self, f: F) -> Rwhere F: Fn(&<T as PropertyGet>::Value) -> R,

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impl<T> StaticTypeExt for Twhere T: StaticType,

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fn ensure_type()

Ensures that the type has been registered with the type system.
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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for Twhere T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T> TransparentType for Twhere T: TransparentPtrType,

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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T> TryFromClosureReturnValue for Twhere T: for<'a> FromValue<'a> + StaticType + 'static,

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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<'a, T, C, E> FromValueOptional<'a> for Twhere T: FromValue<'a, Checker = C>, C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError<E>>, E: Error + Send + 'static,

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impl<Super, Sub> MayDowncastTo<Sub> for Superwhere Super: IsA<Super>, Sub: IsA<Super>,