use crate::{prelude::*, subclass::prelude::*, Allocation, Frame};
use glib::translate::*;
#[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
#[allow(deprecated)]
pub trait FrameImpl: FrameImplExt + WidgetImpl {
fn compute_child_allocation(&self) -> Allocation {
self.parent_compute_child_allocation()
}
}
#[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
#[allow(deprecated)]
pub trait FrameImplExt: ObjectSubclass {
fn parent_compute_child_allocation(&self) -> Allocation;
}
impl<T: FrameImpl> FrameImplExt for T {
fn parent_compute_child_allocation(&self) -> Allocation {
unsafe {
let data = T::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GtkFrameClass;
let f = (*parent_class)
.compute_child_allocation
.expect("No parent class impl for \"compute_child_allocation\"");
let mut allocation = Allocation::uninitialized();
f(
self.obj().unsafe_cast_ref::<Frame>().to_glib_none().0,
allocation.to_glib_none_mut().0,
);
allocation
}
}
}
unsafe impl<T: FrameImpl> IsSubclassable<T> for Frame {
fn class_init(class: &mut glib::Class<Self>) {
Self::parent_class_init::<T>(class);
let klass = class.as_mut();
klass.compute_child_allocation = Some(frame_compute_child_allocation::<T>);
}
}
unsafe extern "C" fn frame_compute_child_allocation<T: FrameImpl>(
ptr: *mut ffi::GtkFrame,
allocationptr: *mut ffi::GtkAllocation,
) {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
let allocation = imp.compute_child_allocation();
*allocationptr = *allocation.to_glib_none().0;
}