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// This file was generated by gir (https://github.com/gtk-rs/gir) // from gir-files (https://github.com/gtk-rs/gir-files) // DO NOT EDIT use crate::Context; use crate::Font; use crate::FontDescription; use crate::FontFamily; use crate::Fontset; use crate::Language; use glib::object::IsA; use glib::translate::*; use std::fmt; use std::mem; use std::ptr; glib::wrapper! { /// The [`FontMap`][crate::FontMap] represents the set of fonts available for a /// particular rendering system. This is a virtual object with /// implementations being specific to particular rendering systems. To /// create an implementation of a [`FontMap`][crate::FontMap], the rendering-system /// specific code should allocate a larger structure that contains a nested /// [`FontMap`][crate::FontMap], fill in the `<structfield>`klass`</structfield>` member of the nested [`FontMap`][crate::FontMap] with a /// pointer to a appropriate `PangoFontMapClass`, then call /// `pango_font_map_init()` on the structure. /// /// The [`FontMap`][crate::FontMap] structure contains one member which the implementation /// fills in. /// /// This is an Abstract Base Class, you cannot instantiate it. /// /// # Implements /// /// [`FontMapExt`][trait@crate::prelude::FontMapExt] #[doc(alias = "PangoFontMap")] pub struct FontMap(Object<ffi::PangoFontMap, ffi::PangoFontMapClass>); match fn { type_ => || ffi::pango_font_map_get_type(), } } pub const NONE_FONT_MAP: Option<&FontMap> = None; /// Trait containing all [`struct@FontMap`] methods. /// /// # Implementors /// /// [`FontMap`][struct@crate::FontMap] pub trait FontMapExt: 'static { /// Forces a change in the context, which will cause any [`Context`][crate::Context] /// using this fontmap to change. /// /// This function is only useful when implementing a new backend /// for Pango, something applications won't do. Backends should /// call this function if they have attached extra data to the context /// and such data is changed. #[doc(alias = "pango_font_map_changed")] fn changed(&self); /// Creates a [`Context`][crate::Context] connected to `self`. This is equivalent /// to [`Context::new()`][crate::Context::new()] followed by [`Context::set_font_map()`][crate::Context::set_font_map()]. /// /// If you are using Pango as part of a higher-level system, /// that system may have it's own way of create a [`Context`][crate::Context]. /// For instance, the GTK+ toolkit has, among others, /// `gdk_pango_context_get_for_screen()`, and /// `gtk_widget_get_pango_context()`. Use those instead. /// /// # Returns /// /// the newly allocated [`Context`][crate::Context], /// which should be freed with `g_object_unref()`. #[doc(alias = "pango_font_map_create_context")] fn create_context(&self) -> Option<Context>; /// Gets a font family by name. /// ## `name` /// a family name /// /// # Returns /// /// the [`FontFamily`][crate::FontFamily] #[cfg(any(feature = "v1_46", feature = "dox"))] #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_46")))] #[doc(alias = "pango_font_map_get_family")] #[doc(alias = "get_family")] fn family(&self, name: &str) -> Option<FontFamily>; /// Returns the current serial number of `self`. The serial number is /// initialized to an small number larger than zero when a new fontmap /// is created and is increased whenever the fontmap is changed. It may /// wrap, but will never have the value 0. Since it can wrap, never compare /// it with "less than", always use "not equals". /// /// The fontmap can only be changed using backend-specific API, like changing /// fontmap resolution. /// /// This can be used to automatically detect changes to a [`FontMap`][crate::FontMap], like /// in [`Context`][crate::Context]. /// /// # Returns /// /// The current serial number of `self`. #[doc(alias = "pango_font_map_get_serial")] #[doc(alias = "get_serial")] fn serial(&self) -> u32; /// List all families for a fontmap. /// /// # Returns /// /// /// ## `families` /// location to store a pointer to an array of [`FontFamily`][crate::FontFamily] *. /// This array should be freed with `g_free()`. #[doc(alias = "pango_font_map_list_families")] fn list_families(&self) -> Vec<FontFamily>; /// Load the font in the fontmap that is the closest match for `desc`. /// ## `context` /// the [`Context`][crate::Context] the font will be used with /// ## `desc` /// a [`FontDescription`][crate::FontDescription] describing the font to load /// /// # Returns /// /// the newly allocated [`Font`][crate::Font] /// loaded, or [`None`] if no font matched. #[doc(alias = "pango_font_map_load_font")] fn load_font(&self, context: &Context, desc: &FontDescription) -> Option<Font>; /// Load a set of fonts in the fontmap that can be used to render /// a font matching `desc`. /// ## `context` /// the [`Context`][crate::Context] the font will be used with /// ## `desc` /// a [`FontDescription`][crate::FontDescription] describing the font to load /// ## `language` /// a [`Language`][crate::Language] the fonts will be used for /// /// # Returns /// /// the newly allocated /// [`Fontset`][crate::Fontset] loaded, or [`None`] if no font matched. #[doc(alias = "pango_font_map_load_fontset")] fn load_fontset( &self, context: &Context, desc: &FontDescription, language: &Language, ) -> Option<Fontset>; } impl<O: IsA<FontMap>> FontMapExt for O { fn changed(&self) { unsafe { ffi::pango_font_map_changed(self.as_ref().to_glib_none().0); } } fn create_context(&self) -> Option<Context> { unsafe { from_glib_full(ffi::pango_font_map_create_context( self.as_ref().to_glib_none().0, )) } } #[cfg(any(feature = "v1_46", feature = "dox"))] #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_46")))] fn family(&self, name: &str) -> Option<FontFamily> { unsafe { from_glib_none(ffi::pango_font_map_get_family( self.as_ref().to_glib_none().0, name.to_glib_none().0, )) } } fn serial(&self) -> u32 { unsafe { ffi::pango_font_map_get_serial(self.as_ref().to_glib_none().0) } } fn list_families(&self) -> Vec<FontFamily> { unsafe { let mut families = ptr::null_mut(); let mut n_families = mem::MaybeUninit::uninit(); ffi::pango_font_map_list_families( self.as_ref().to_glib_none().0, &mut families, n_families.as_mut_ptr(), ); FromGlibContainer::from_glib_container_num(families, n_families.assume_init() as usize) } } fn load_font(&self, context: &Context, desc: &FontDescription) -> Option<Font> { unsafe { from_glib_full(ffi::pango_font_map_load_font( self.as_ref().to_glib_none().0, context.to_glib_none().0, desc.to_glib_none().0, )) } } fn load_fontset( &self, context: &Context, desc: &FontDescription, language: &Language, ) -> Option<Fontset> { unsafe { from_glib_full(ffi::pango_font_map_load_fontset( self.as_ref().to_glib_none().0, context.to_glib_none().0, desc.to_glib_none().0, mut_override(language.to_glib_none().0), )) } } } impl fmt::Display for FontMap { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { f.write_str("FontMap") } }