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pub use crate::prelude::*;
use std::{ffi, mem, os::raw};
fn run() -> Result<(), FltkError> {
unsafe {
match fltk_sys::fl::Fl_run() {
0 => Ok(()),
_ => return Err(FltkError::Internal(FltkErrorKind::FailedToRun)),
}
}
}
fn lock() -> Result<(), FltkError> {
unsafe {
match fltk_sys::fl::Fl_lock() {
0 => Ok(()),
_ => return Err(FltkError::Internal(FltkErrorKind::FailedToLock)),
}
}
}
fn set_scheme(scheme: AppScheme) {
let name_str = match scheme {
AppScheme::Base => "base",
AppScheme::Gtk => "gtk+",
AppScheme::Gleam => "gleam",
AppScheme::Plastic => "plastic",
};
let name_str= std::ffi::CString::new(name_str).unwrap();
unsafe {
fltk_sys::fl::Fl_set_scheme(name_str.into_raw() as *const raw::c_char)
}
}
#[derive(Debug, Copy, Clone)]
pub struct App {}
impl App {
pub fn default() -> App {
App {}
}
pub fn set_scheme(self, scheme: AppScheme) -> App {
fl::set_scheme(scheme);
self
}
pub fn run(&self) -> Result<(), FltkError> {
fl::lock()?;
return fl::run();
}
}
pub fn event() -> Event {
unsafe {
let x = fltk_sys::fl::Fl_event();
let x: Event = mem::transmute(x);
x
}
}
pub fn event_key() -> i32 {
unsafe {
let x = fltk_sys::fl::Fl_event_key();
x
}
}
pub fn event_text() -> String {
unsafe {
ffi::CString::from_raw(fltk_sys::fl::Fl_event_text() as *mut raw::c_char)
.into_string()
.unwrap()
}
}
pub fn event_button() -> i32 {
unsafe { fltk_sys::fl::Fl_event_button() }
}
pub fn event_clicks() -> bool {
unsafe {
match fltk_sys::fl::Fl_event_clicks() {
0 => false,
_ => true,
}
}
}
pub fn event_coords() -> (i32, i32) {
unsafe { (fltk_sys::fl::Fl_event_dx(), fltk_sys::fl::Fl_event_dy()) }
}
pub fn event_is_click() -> bool {
unsafe {
match fltk_sys::fl::Fl_event_is_click() {
0 => false,
_ => true,
}
}
}
pub fn event_length() -> i32 {
unsafe { fltk_sys::fl::Fl_event_length() }
}
pub fn event_state() -> i32 {
unsafe { fltk_sys::fl::Fl_event_state() }
}
pub fn screen_size() -> (f64, f64) {
unsafe {
(
(fltk_sys::fl::Fl_screen_w() as f64 / 0.96).into(),
(fltk_sys::fl::Fl_screen_h() as f64 / 0.96).into(),
)
}
}
pub fn paste<T>(widget: T)
where
T: WidgetTrait + InputTrait,
{
unsafe {
fltk_sys::fl::Fl_paste(widget.as_widget_ptr() as *mut raw::c_void, 1);
}
}
pub fn set_callback<'a, W>(widget: &'a W, cb: Box<dyn FnMut() + 'a>)
where
W: WidgetTrait,
{
unsafe {
unsafe extern "C" fn shim<'a>(_wid: *mut fltk_sys::widget::Fl_Widget, data: *mut raw::c_void) {
let a: *mut Box<dyn FnMut() + 'a> = mem::transmute(data);
let f: &mut (dyn FnMut() + 'a) = &mut **a;
f();
}
let a: *mut Box<dyn FnMut() + 'a> = Box::into_raw(Box::new(cb));
let data: *mut raw::c_void = mem::transmute(a);
let callback: fltk_sys::widget::Fl_Callback = Some(shim);
fltk_sys::widget::Fl_Widget_callback_with_captures(widget.as_widget_ptr(), callback, data);
}
}