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use std::mem::transmute;
use std::ptr;
use glib::object::{Cast, IsA};
use glib::signal::{SignalHandlerId, connect_raw};
use glib::translate::*;
use glib_ffi::gboolean;
use gdk::{DragAction, Event, ModifierType};
use gdk;
use gdk_ffi;
use pango;
use ffi;
use {
DestDefaults,
Inhibit,
Rectangle,
TargetEntry,
Widget,
};
pub trait WidgetExtManual: 'static {
fn drag_dest_set(&self, flags: DestDefaults, targets: &[TargetEntry], actions: DragAction);
fn drag_source_set(&self, start_button_mask: ModifierType, targets: &[TargetEntry], actions: DragAction);
fn intersect<'a, I: Into<Option<&'a mut Rectangle>>>(
&self,
area: &Rectangle,
intersection: I,
) -> bool;
fn override_font(&self, font: &pango::FontDescription);
fn connect_map_event<F: Fn(&Self, &Event) -> Inhibit + 'static>(&self, f: F) -> SignalHandlerId;
fn connect_unmap_event<F: Fn(&Self, &Event) -> Inhibit + 'static>(&self, f: F) -> SignalHandlerId;
fn add_events(&self, events: gdk::EventMask);
fn get_events(&self) -> gdk::EventMask;
fn set_events(&self, events: gdk::EventMask);
}
impl<O: IsA<Widget>> WidgetExtManual for O {
fn drag_dest_set(&self, flags: DestDefaults, targets: &[TargetEntry], actions: DragAction) {
let stashes: Vec<_> = targets.iter().map(|e| e.to_glib_none()).collect();
let t: Vec<_> = stashes.iter().map(|stash| unsafe { *stash.0 }).collect();
let t_ptr: *mut ffi::GtkTargetEntry = if !t.is_empty() {
t.as_ptr() as *mut _
} else {
ptr::null_mut()
};
unsafe { ffi::gtk_drag_dest_set(self.as_ref().to_glib_none().0,
flags.to_glib(),
t_ptr,
t.len() as i32,
actions.to_glib())};
}
fn drag_source_set(&self, start_button_mask: ModifierType, targets: &[TargetEntry], actions: DragAction) {
let stashes: Vec<_> = targets.iter().map(|e| e.to_glib_none()).collect();
let t: Vec<_> = stashes.iter().map(|stash| unsafe { *stash.0 }).collect();
let t_ptr: *mut ffi::GtkTargetEntry = if !t.is_empty() {
t.as_ptr() as *mut _
} else {
ptr::null_mut()
};
unsafe { ffi::gtk_drag_source_set(self.as_ref().to_glib_none().0,
start_button_mask.to_glib(),
t_ptr,
t.len() as i32,
actions.to_glib())};
}
fn intersect<'a, I: Into<Option<&'a mut Rectangle>>>(
&self,
area: &Rectangle,
intersection: I,
) -> bool {
let mut intersection = intersection.into();
unsafe {
from_glib(ffi::gtk_widget_intersect(self.as_ref().to_glib_none().0, area.to_glib_none().0, intersection.to_glib_none_mut().0))
}
}
fn override_font(&self, font: &pango::FontDescription) {
unsafe {
ffi::gtk_widget_override_font(self.as_ref().to_glib_none().0, font.to_glib_none().0)
}
}
fn connect_map_event<F: Fn(&Self, &Event) -> Inhibit + 'static>(&self, f: F) -> SignalHandlerId {
unsafe {
let f: Box<F> = Box::new(f);
connect_raw(self.to_glib_none().0 as *mut _, b"map-event\0".as_ptr() as *mut _,
Some(transmute(event_any_trampoline::<Self, F> as usize)), Box::into_raw(f))
}
}
fn connect_unmap_event<F: Fn(&Self, &Event) -> Inhibit + 'static>(&self, f: F) -> SignalHandlerId {
unsafe {
let f: Box<F> = Box::new(f);
connect_raw(self.to_glib_none().0 as *mut _, b"unmap-event\0".as_ptr() as *mut _,
Some(transmute(event_any_trampoline::<Self, F> as usize)), Box::into_raw(f))
}
}
fn add_events(&self, events: gdk::EventMask) {
unsafe {
ffi::gtk_widget_add_events(self.as_ref().to_glib_none().0, events.to_glib() as i32);
}
}
fn get_events(&self) -> gdk::EventMask {
unsafe {
from_glib(ffi::gtk_widget_get_events(self.as_ref().to_glib_none().0) as u32)
}
}
fn set_events(&self, events: gdk::EventMask) {
unsafe {
ffi::gtk_widget_set_events(self.as_ref().to_glib_none().0, events.to_glib() as i32);
}
}
}
unsafe extern "C" fn event_any_trampoline<T, F: Fn(&T, &Event) -> Inhibit + 'static>(this: *mut ffi::GtkWidget,
event: *mut gdk_ffi::GdkEventAny,
f: &F) -> gboolean
where T: IsA<Widget> {
f(&Widget::from_glib_borrow(this).unsafe_cast(), &from_glib_borrow(event)).to_glib()
}