use crate::subclass::prelude::*;
use glib::translate::*;
use glib::Cast;
use libc::c_int;
use crate::{LayoutChild, LayoutManager, Orientation, SizeRequestMode, Widget};
pub trait LayoutManagerImpl: LayoutManagerImplExt + ObjectImpl {
fn allocate(&self, widget: &Widget, width: i32, height: i32, baseline: i32) {
self.parent_allocate(widget, width, height, baseline)
}
fn create_layout_child(&self, widget: &Widget, for_child: &Widget) -> LayoutChild {
self.parent_create_layout_child(widget, for_child)
}
fn layout_child_type() -> Option<glib::Type> {
None
}
#[doc(alias = "get_request_mode")]
fn request_mode(&self, widget: &Widget) -> SizeRequestMode {
self.parent_request_mode(widget)
}
fn measure(
&self,
widget: &Widget,
orientation: Orientation,
for_size: i32,
) -> (i32, i32, i32, i32) {
self.parent_measure(widget, orientation, for_size)
}
fn root(&self) {
self.parent_root()
}
fn unroot(&self) {
self.parent_unroot()
}
}
pub trait LayoutManagerImplExt: ObjectSubclass {
fn parent_allocate(&self, widget: &Widget, width: i32, height: i32, baseline: i32);
fn parent_create_layout_child(&self, widget: &Widget, for_child: &Widget) -> LayoutChild;
fn parent_request_mode(&self, widget: &Widget) -> SizeRequestMode;
fn parent_measure(
&self,
widget: &Widget,
orientation: Orientation,
for_size: i32,
) -> (i32, i32, i32, i32);
fn parent_root(&self);
fn parent_unroot(&self);
}
impl<T: LayoutManagerImpl> LayoutManagerImplExt for T {
fn parent_allocate(&self, widget: &Widget, width: i32, height: i32, baseline: i32) {
unsafe {
let data = T::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GtkLayoutManagerClass;
if let Some(f) = (*parent_class).allocate {
f(
self.obj()
.unsafe_cast_ref::<LayoutManager>()
.to_glib_none()
.0,
widget.to_glib_none().0,
width,
height,
baseline,
)
}
}
}
fn parent_create_layout_child(&self, widget: &Widget, for_child: &Widget) -> LayoutChild {
unsafe {
let data = T::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GtkLayoutManagerClass;
let f = (*parent_class)
.create_layout_child
.expect("No parent class impl for \"create_layout_child\"");
from_glib_none(f(
self.obj()
.unsafe_cast_ref::<LayoutManager>()
.to_glib_none()
.0,
widget.to_glib_none().0,
for_child.to_glib_none().0,
))
}
}
fn parent_request_mode(&self, widget: &Widget) -> SizeRequestMode {
unsafe {
let data = T::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GtkLayoutManagerClass;
let f = (*parent_class)
.get_request_mode
.expect("No parent class impl for \"get_request_mode\"");
from_glib(f(
self.obj()
.unsafe_cast_ref::<LayoutManager>()
.to_glib_none()
.0,
widget.to_glib_none().0,
))
}
}
fn parent_measure(
&self,
widget: &Widget,
orientation: Orientation,
for_size: i32,
) -> (i32, i32, i32, i32) {
unsafe {
let data = T::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GtkLayoutManagerClass;
let f = (*parent_class)
.measure
.expect("No parent class impl for \"measure\"");
let mut minimum = 0;
let mut natural = 0;
let mut minimum_baseline = -1;
let mut natural_baseline = -1;
f(
self.obj()
.unsafe_cast_ref::<LayoutManager>()
.to_glib_none()
.0,
widget.to_glib_none().0,
orientation.into_glib(),
for_size,
&mut minimum,
&mut natural,
&mut minimum_baseline,
&mut natural_baseline,
);
(minimum, natural, minimum_baseline, natural_baseline)
}
}
fn parent_root(&self) {
unsafe {
let data = T::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GtkLayoutManagerClass;
if let Some(f) = (*parent_class).root {
f(self
.obj()
.unsafe_cast_ref::<LayoutManager>()
.to_glib_none()
.0)
}
}
}
fn parent_unroot(&self) {
unsafe {
let data = T::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GtkLayoutManagerClass;
if let Some(f) = (*parent_class).unroot {
f(self
.obj()
.unsafe_cast_ref::<LayoutManager>()
.to_glib_none()
.0)
}
}
}
}
unsafe impl<T: LayoutManagerImpl> IsSubclassable<T> for LayoutManager {
fn class_init(class: &mut glib::Class<Self>) {
Self::parent_class_init::<T>(class);
assert!(
crate::rt::is_initialized(),
"GTK has to be initialized first"
);
let klass = class.as_mut();
klass.allocate = Some(layout_manager_allocate::<T>);
klass.create_layout_child = Some(layout_manager_create_layout_child::<T>);
if let Some(type_) = T::layout_child_type() {
klass.layout_child_type = type_.into_glib();
}
klass.get_request_mode = Some(layout_manager_get_request_mode::<T>);
klass.measure = Some(layout_manager_measure::<T>);
klass.root = Some(layout_manager_root::<T>);
klass.unroot = Some(layout_manager_unroot::<T>);
}
}
unsafe extern "C" fn layout_manager_allocate<T: LayoutManagerImpl>(
ptr: *mut ffi::GtkLayoutManager,
widgetptr: *mut ffi::GtkWidget,
width: i32,
height: i32,
baseline: i32,
) {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
let widget: Borrowed<Widget> = from_glib_borrow(widgetptr);
imp.allocate(&widget, width, height, baseline)
}
unsafe extern "C" fn layout_manager_create_layout_child<T: LayoutManagerImpl>(
ptr: *mut ffi::GtkLayoutManager,
widgetptr: *mut ffi::GtkWidget,
for_childptr: *mut ffi::GtkWidget,
) -> *mut ffi::GtkLayoutChild {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
let widget: Borrowed<Widget> = from_glib_borrow(widgetptr);
let for_child: Borrowed<Widget> = from_glib_borrow(for_childptr);
imp.create_layout_child(&widget, &for_child).to_glib_full()
}
unsafe extern "C" fn layout_manager_get_request_mode<T: LayoutManagerImpl>(
ptr: *mut ffi::GtkLayoutManager,
widgetptr: *mut ffi::GtkWidget,
) -> ffi::GtkSizeRequestMode {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
let widget: Borrowed<Widget> = from_glib_borrow(widgetptr);
imp.request_mode(&widget).into_glib()
}
unsafe extern "C" fn layout_manager_measure<T: LayoutManagerImpl>(
ptr: *mut ffi::GtkLayoutManager,
widgetptr: *mut ffi::GtkWidget,
orientation: ffi::GtkOrientation,
for_size: i32,
minimum_ptr: *mut c_int,
natural_ptr: *mut c_int,
minimum_baseline_ptr: *mut c_int,
natural_baseline_ptr: *mut c_int,
) {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
let widget: Borrowed<Widget> = from_glib_borrow(widgetptr);
let (minimum, natural, minimum_baseline, natural_baseline) =
imp.measure(&widget, from_glib(orientation), for_size);
if !minimum_ptr.is_null() {
*minimum_ptr = minimum;
}
if !natural_ptr.is_null() {
*natural_ptr = natural;
}
if !minimum_baseline_ptr.is_null() {
*minimum_baseline_ptr = minimum_baseline;
}
if !natural_baseline_ptr.is_null() {
*natural_baseline_ptr = natural_baseline;
}
}
unsafe extern "C" fn layout_manager_root<T: LayoutManagerImpl>(ptr: *mut ffi::GtkLayoutManager) {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
imp.root()
}
unsafe extern "C" fn layout_manager_unroot<T: LayoutManagerImpl>(ptr: *mut ffi::GtkLayoutManager) {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
imp.unroot()
}