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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::Texture;
use glib::object::IsA;
use glib::translate::*;

/// Canonicalizes the given mime type and interns the result.
///
/// If @string is not a valid mime type, [`None`] is returned instead.
/// See RFC 2048 for the syntax if mime types.
/// ## `string`
/// string of a potential mime type
///
/// # Returns
///
/// An interned string for the canonicalized
///   mime type or [`None`] if the string wasn't a valid mime type
#[doc(alias = "gdk_intern_mime_type")]
pub fn intern_mime_type(string: &str) -> Option<glib::GString> {
    assert_initialized_main_thread!();
    unsafe { from_glib_none(ffi::gdk_intern_mime_type(string.to_glib_none().0)) }
}

/// Transfers image data from a [`cairo::Surface`][crate::cairo::Surface] and converts it
/// to a [`gdk_pixbuf::Pixbuf`][crate::gdk_pixbuf::Pixbuf].
///
/// This allows you to efficiently read individual pixels from cairo surfaces.
///
/// This function will create an RGB pixbuf with 8 bits per channel.
/// The pixbuf will contain an alpha channel if the @surface contains one.
/// ## `surface`
/// surface to copy from
/// ## `src_x`
/// Source X coordinate within @surface
/// ## `src_y`
/// Source Y coordinate within @surface
/// ## `width`
/// Width in pixels of region to get
/// ## `height`
/// Height in pixels of region to get
///
/// # Returns
///
/// A newly-created pixbuf with a
///   reference count of 1
#[doc(alias = "gdk_pixbuf_get_from_surface")]
pub fn pixbuf_get_from_surface(
    surface: &cairo::Surface,
    src_x: i32,
    src_y: i32,
    width: i32,
    height: i32,
) -> Option<gdk_pixbuf::Pixbuf> {
    assert_initialized_main_thread!();
    unsafe {
        from_glib_full(ffi::gdk_pixbuf_get_from_surface(
            mut_override(surface.to_glib_none().0),
            src_x,
            src_y,
            width,
            height,
        ))
    }
}

/// Creates a new pixbuf from @texture.
///
/// This should generally not be used in newly written code as later
/// stages will almost certainly convert the pixbuf back into a texture
/// to draw it on screen.
/// ## `texture`
/// a [`Texture`][crate::Texture]
///
/// # Returns
///
/// a new [`gdk_pixbuf::Pixbuf`][crate::gdk_pixbuf::Pixbuf]
#[doc(alias = "gdk_pixbuf_get_from_texture")]
pub fn pixbuf_get_from_texture(texture: &impl IsA<Texture>) -> Option<gdk_pixbuf::Pixbuf> {
    skip_assert_initialized!();
    unsafe {
        from_glib_full(ffi::gdk_pixbuf_get_from_texture(
            texture.as_ref().to_glib_none().0,
        ))
    }
}

/// Sets a list of backends that GDK should try to use.
///
/// This can be useful if your application does not
/// work with certain GDK backends.
///
/// By default, GDK tries all included backends.
///
/// For example:
///
/// **⚠️ The following code is in c ⚠️**
///
/// ```c
/// gdk_set_allowed_backends ("wayland,macos,*");
/// ```
///
/// instructs GDK to try the Wayland backend first, followed by the
/// MacOs backend, and then all others.
///
/// If the `GDK_BACKEND` environment variable is set, it determines
/// what backends are tried in what order, while still respecting the
/// set of allowed backends that are specified by this function.
///
/// The possible backend names are:
///
///   - `broadway`
///   - `macos`
///   - `wayland`.
///   - `win32`
///   - `x11`
///
/// You can also include a `*` in the list to try all remaining backends.
///
/// This call must happen prior to functions that open a display, such
/// as [`Display::open()`][crate::Display::open()], `gtk_init()`, or `gtk_init_check()`
/// in order to take effect.
/// ## `backends`
/// a comma-separated list of backends
#[doc(alias = "gdk_set_allowed_backends")]
pub fn set_allowed_backends(backends: &str) {
    skip_assert_initialized!();
    unsafe {
        ffi::gdk_set_allowed_backends(backends.to_glib_none().0);
    }
}

/// Convert from a Unicode character to a key symbol.
/// ## `wc`
/// a Unicode character
///
/// # Returns
///
/// the corresponding GDK key symbol, if one exists.
///   or, if there is no corresponding symbol, wc | 0x01000000
#[doc(alias = "gdk_unicode_to_keyval")]
pub fn unicode_to_keyval(wc: u32) -> u32 {
    assert_initialized_main_thread!();
    unsafe { ffi::gdk_unicode_to_keyval(wc) }
}