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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::FontDescription;
#[cfg(any(feature = "v1_46", feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_46")))]
use crate::FontFamily;
use glib::object::IsA;
use glib::translate::*;
use std::fmt;
use std::mem;
use std::ptr;

glib::wrapper! {
    /// A [`FontFace`][crate::FontFace] is used to represent a group of fonts with
    /// the same family, slant, weight, and width, but varying sizes.
    ///
    /// This is an Abstract Base Class, you cannot instantiate it.
    ///
    /// # Implements
    ///
    /// [`FontFaceExt`][trait@crate::prelude::FontFaceExt]
    #[doc(alias = "PangoFontFace")]
    pub struct FontFace(Object<ffi::PangoFontFace, ffi::PangoFontFaceClass>);

    match fn {
        type_ => || ffi::pango_font_face_get_type(),
    }
}

impl FontFace {
    pub const NONE: Option<&'static FontFace> = None;
}

/// Trait containing all [`struct@FontFace`] methods.
///
/// # Implementors
///
/// [`FontFace`][struct@crate::FontFace]
pub trait FontFaceExt: 'static {
    /// Returns a font description that matches the face.
    ///
    /// The resulting font description will have the family, style,
    /// variant, weight and stretch of the face, but its size field
    /// will be unset.
    ///
    /// # Returns
    ///
    /// a newly-created [`FontDescription`][crate::FontDescription] structure
    ///   holding the description of the face. Use `Pango::FontDescription::free()`
    ///   to free the result.
    #[doc(alias = "pango_font_face_describe")]
    fn describe(&self) -> Option<FontDescription>;

    /// Gets a name representing the style of this face.
    ///
    /// Note that a font family may contain multiple faces
    /// with the same name (e.g. a variable and a non-variable
    /// face for the same style).
    ///
    /// # Returns
    ///
    /// the face name for the face. This string is
    ///   owned by the face object and must not be modified or freed.
    #[doc(alias = "pango_font_face_get_face_name")]
    #[doc(alias = "get_face_name")]
    fn face_name(&self) -> Option<glib::GString>;

    /// Gets the [`FontFamily`][crate::FontFamily] that @self belongs to.
    ///
    /// # 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_face_get_family")]
    #[doc(alias = "get_family")]
    fn family(&self) -> Option<FontFamily>;

    /// Returns whether a [`FontFace`][crate::FontFace] is synthesized.
    ///
    /// This will be the case if the underlying font rendering engine
    /// creates this face from another face, by shearing, emboldening,
    /// lightening or modifying it in some other way.
    ///
    /// # Returns
    ///
    /// whether @self is synthesized
    #[doc(alias = "pango_font_face_is_synthesized")]
    fn is_synthesized(&self) -> bool;

    /// List the available sizes for a font.
    ///
    /// This is only applicable to bitmap fonts. For scalable fonts, stores
    /// [`None`] at the location pointed to by @sizes and 0 at the location pointed
    /// to by @n_sizes. The sizes returned are in Pango units and are sorted
    /// in ascending order.
    ///
    /// # Returns
    ///
    ///
    /// ## `sizes`
    ///
    ///   location to store a pointer to an array of int. This array
    ///   should be freed with g_free().
    #[doc(alias = "pango_font_face_list_sizes")]
    fn list_sizes(&self) -> Vec<i32>;
}

impl<O: IsA<FontFace>> FontFaceExt for O {
    fn describe(&self) -> Option<FontDescription> {
        unsafe {
            from_glib_full(ffi::pango_font_face_describe(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn face_name(&self) -> Option<glib::GString> {
        unsafe {
            from_glib_none(ffi::pango_font_face_get_face_name(
                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) -> Option<FontFamily> {
        unsafe {
            from_glib_none(ffi::pango_font_face_get_family(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn is_synthesized(&self) -> bool {
        unsafe {
            from_glib(ffi::pango_font_face_is_synthesized(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn list_sizes(&self) -> Vec<i32> {
        unsafe {
            let mut sizes = ptr::null_mut();
            let mut n_sizes = mem::MaybeUninit::uninit();
            ffi::pango_font_face_list_sizes(
                self.as_ref().to_glib_none().0,
                &mut sizes,
                n_sizes.as_mut_ptr(),
            );
            FromGlibContainer::from_glib_full_num(sizes, n_sizes.assume_init() as usize)
        }
    }
}

impl fmt::Display for FontFace {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str("FontFace")
    }
}