use crate::{Display, Object, Renderer};
use glib::translate::*;
use std::{fmt, ptr};
glib_wrapper! {
pub struct Context(Object<ffi::CoglContext, ContextClass>) @extends Object;
match fn {
get_type => || ffi::cogl_context_get_gtype(),
}
}
impl Context {
/// Creates a new `Context` which acts as an application sandbox
/// for any state objects that are allocated.
/// ## `display`
/// A `Display` pointer
///
/// # Returns
///
/// A newly allocated `Context`
pub fn new(display: Option<&Display>) -> Result<Context, glib::Error> {
unsafe {
let mut error = ptr::null_mut();
let ret = ffi::cogl_context_new(display.to_glib_none().0, &mut error);
if error.is_null() {
Ok(from_glib_full(ret))
} else {
Err(from_glib_full(error))
}
}
}
/// Retrieves the `Display` that is internally associated with the
/// given `self`. This will return the same `Display` that was
/// passed to `Context::new` or if `None` was passed to
/// `Context::new` then this function returns a pointer to the
/// display that was automatically setup internally.
///
/// # Returns
///
/// The `Display` associated with the
/// given `self`.
pub fn get_display(&self) -> Option<Display> {
unsafe { from_glib_none(ffi::cogl_context_get_display(self.to_glib_none().0)) }
}
/// Retrieves the `Renderer` that is internally associated with the
/// given `self`. This will return the same `Renderer` that was
/// passed to `Display::new` or if `None` was passed to
/// `Display::new` or `Context::new` then this function returns
/// a pointer to the renderer that was automatically connected
/// internally.
///
/// # Returns
///
/// The `Renderer` associated with the
/// given `self`.
pub fn get_renderer(&self) -> Option<Renderer> {
unsafe { from_glib_none(ffi::cogl_context_get_renderer(self.to_glib_none().0)) }
}
}
impl fmt::Display for Context {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "Context")
}
}