gdk_pixbuf/subclass/
pixbuf_loader.rsuse glib::{prelude::*, subclass::prelude::*, translate::*};
use crate::{ffi, PixbufLoader};
pub trait PixbufLoaderImpl: ObjectImpl {
fn size_prepared(&self, width: i32, height: i32) {
self.parent_size_prepared(width, height)
}
fn area_prepared(&self) {
self.parent_area_prepared()
}
fn area_updated(&self, x: i32, y: i32, width: i32, height: i32) {
self.parent_area_updated(x, y, width, height)
}
fn closed(&self) {
self.parent_closed()
}
}
mod sealed {
pub trait Sealed {}
impl<T: super::PixbufLoaderImplExt> Sealed for T {}
}
pub trait PixbufLoaderImplExt: sealed::Sealed + ObjectSubclass {
fn parent_size_prepared(&self, width: i32, height: i32) {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GdkPixbufLoaderClass;
if let Some(f) = (*parent_class).size_prepared {
f(
self.obj()
.unsafe_cast_ref::<PixbufLoader>()
.to_glib_none()
.0,
width,
height,
)
}
}
}
fn parent_area_prepared(&self) {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GdkPixbufLoaderClass;
if let Some(f) = (*parent_class).area_prepared {
f(self
.obj()
.unsafe_cast_ref::<PixbufLoader>()
.to_glib_none()
.0)
}
}
}
fn parent_area_updated(&self, x: i32, y: i32, width: i32, height: i32) {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GdkPixbufLoaderClass;
if let Some(f) = (*parent_class).area_updated {
f(
self.obj()
.unsafe_cast_ref::<PixbufLoader>()
.to_glib_none()
.0,
x,
y,
width,
height,
)
}
}
}
fn parent_closed(&self) {
unsafe {
let data = Self::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GdkPixbufLoaderClass;
if let Some(f) = (*parent_class).closed {
f(self
.obj()
.unsafe_cast_ref::<PixbufLoader>()
.to_glib_none()
.0)
}
}
}
}
impl<T: PixbufLoaderImpl> PixbufLoaderImplExt for T {}
unsafe impl<T: PixbufLoaderImpl> IsSubclassable<T> for PixbufLoader {
fn class_init(class: &mut ::glib::Class<Self>) {
Self::parent_class_init::<T>(class);
let klass = class.as_mut();
klass.size_prepared = Some(loader_size_prepared::<T>);
klass.area_prepared = Some(loader_area_prepared::<T>);
klass.area_updated = Some(loader_area_updated::<T>);
klass.closed = Some(loader_closed::<T>);
}
}
unsafe extern "C" fn loader_size_prepared<T: PixbufLoaderImpl>(
ptr: *mut ffi::GdkPixbufLoader,
width: i32,
height: i32,
) {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
imp.size_prepared(width, height)
}
unsafe extern "C" fn loader_area_prepared<T: PixbufLoaderImpl>(ptr: *mut ffi::GdkPixbufLoader) {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
imp.area_prepared();
}
unsafe extern "C" fn loader_area_updated<T: PixbufLoaderImpl>(
ptr: *mut ffi::GdkPixbufLoader,
x: i32,
y: i32,
width: i32,
height: i32,
) {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
imp.area_updated(x, y, width, height)
}
unsafe extern "C" fn loader_closed<T: PixbufLoaderImpl>(ptr: *mut ffi::GdkPixbufLoader) {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
imp.closed()
}