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// Copyright 2013-2017, The Gtk-rs Project Developers.
// See the COPYRIGHT file at the top-level directory of this distribution.
// Licensed under the MIT license, see the LICENSE file or <http://opensource.org/licenses/MIT>

use cairo;
use gdk_sys;
use glib;
use glib::translate::*;
use Screen;

impl Screen {
    /// Gets any options previously set with `Screen::set_font_options`.
    ///
    /// # Returns
    ///
    /// the current font options, or `None` if no
    ///  default font options have been set.
    pub fn get_font_options(&self) -> Option<cairo::FontOptions> {
        unsafe {
            from_glib_none(mut_override(gdk_sys::gdk_screen_get_font_options(
                self.to_glib_none().0,
            )))
        }
    }

    /// Retrieves a desktop-wide setting such as double-click time
    /// for the `Screen` `self`.
    ///
    /// FIXME needs a list of valid settings here, or a link to
    /// more information.
    /// ## `name`
    /// the name of the setting
    /// ## `value`
    /// location to store the value of the setting
    ///
    /// # Returns
    ///
    /// `true` if the setting existed and a value was stored
    ///  in `value`, `false` otherwise.
    pub fn get_setting(&self, name: &str) -> Option<glib::Value> {
        unsafe {
            let mut value = glib::Value::uninitialized();
            let done: bool = from_glib(gdk_sys::gdk_screen_get_setting(
                self.to_glib_none().0,
                name.to_glib_none().0,
                value.to_glib_none_mut().0,
            ));

            if done == true {
                Some(value)
            } else {
                None
            }
        }
    }
}