use {Event, Hints, MonitorID}; use libc; use std::{mem, ptr}; use std::sync::atomics::AtomicBool; mod events; mod ffi; pub struct Window { display: *mut ffi::Display, window: ffi::Window, context: ffi::GLXContext, is_closed: AtomicBool, wm_delete_window: ffi::Atom, } impl Window { pub fn new(dimensions: Option<(uint, uint)>, title: &str, hints: &Hints, _: Option) -> Result { // calling XOpenDisplay let display = unsafe { let display = ffi::XOpenDisplay(ptr::null()); if display.is_null() { return Err(format!("XOpenDisplay failed")); } display }; // TODO: set error handler static VISUAL_ATTRIBUTES: [libc::c_int, ..5] = [ ffi::GLX_RGBA, ffi::GLX_DEPTH_SIZE, 24, ffi::GLX_DOUBLEBUFFER, 0 ]; // getting the visual infos let visual_infos = unsafe { let vi = ffi::glXChooseVisual(display, 0, VISUAL_ATTRIBUTES.as_ptr()); if vi.is_null() { return Err(format!("glXChooseVisual failed")); } vi }; // getting the root window let root = unsafe { ffi::XDefaultRootWindow(display) }; // creating the color map let cmap = unsafe { let cmap = ffi::XCreateColormap(display, root, (*visual_infos).visual, ffi::AllocNone); // TODO: error checking? cmap }; // creating let mut set_win_attr = { let mut swa: ffi::XSetWindowAttributes = unsafe { mem::zeroed() }; swa.colormap = cmap; swa.event_mask = ffi::ExposureMask | ffi::ResizeRedirectMask | ffi::VisibilityChangeMask | ffi::KeyPressMask | ffi::PointerMotionMask | ffi::KeyPressMask | ffi::KeyReleaseMask | ffi::ButtonPressMask | ffi::ButtonReleaseMask; swa }; // finally creating the window let window = unsafe { let dimensions = dimensions.unwrap_or((800, 600)); let win = ffi::XCreateWindow(display, root, 50, 50, dimensions.val0() as libc::c_uint, dimensions.val1() as libc::c_uint, 0, (*visual_infos).depth, ffi::InputOutput, (*visual_infos).visual, ffi::CWColormap | ffi::CWEventMask, &mut set_win_attr); win }; // creating window, step 2 let wm_delete_window = unsafe { use std::c_str::ToCStr; ffi::XMapWindow(display, window); let mut wm_delete_window = ffi::XInternAtom(display, "WM_DELETE_WINDOW".to_c_str().as_ptr() as *const libc::c_char, 0); ffi::XSetWMProtocols(display, window, &mut wm_delete_window, 1); ffi::XStoreName(display, window, mem::transmute(title.as_slice().as_ptr())); ffi::XFlush(display); wm_delete_window }; // creating GL context let context = unsafe { ffi::glXCreateContext(display, visual_infos, ptr::null(), 1) }; // returning Ok(Window{ display: display, window: window, context: context, is_closed: AtomicBool::new(false), wm_delete_window: wm_delete_window, }) } pub fn is_closed(&self) -> bool { use std::sync::atomics::Relaxed; self.is_closed.load(Relaxed) } pub fn set_title(&self, title: &str) { unsafe { ffi::XStoreName(self.display, self.window, mem::transmute(title.as_slice().as_ptr())); } } pub fn get_position(&self) -> Option<(int, int)> { unimplemented!() } pub fn set_position(&self, x: uint, y: uint) { unimplemented!() } pub fn get_inner_size(&self) -> Option<(uint, uint)> { unimplemented!() } pub fn get_outer_size(&self) -> Option<(uint, uint)> { unimplemented!() } pub fn set_inner_size(&self, x: uint, y: uint) { unimplemented!() } pub fn poll_events(&self) -> Vec { use std::mem; let mut events = Vec::new(); loop { use std::num::Bounded; let mut xev = unsafe { mem::uninitialized() }; let res = unsafe { ffi::XCheckMaskEvent(self.display, Bounded::max_value(), &mut xev) }; if res == 0 { let res = unsafe { ffi::XCheckTypedEvent(self.display, ffi::ClientMessage, &mut xev) }; if res == 0 { break } } match xev.type_ { ffi::ClientMessage => { use Closed; use std::sync::atomics::Relaxed; let client_msg: &ffi::XClientMessageEvent = unsafe { mem::transmute(&xev) }; if client_msg.l[0] == self.wm_delete_window as libc::c_long { self.is_closed.store(true, Relaxed); events.push(Closed); } }, ffi::ResizeRequest => { use Resized; let rs_event: &ffi::XResizeRequestEvent = unsafe { mem::transmute(&xev) }; events.push(Resized(rs_event.width as uint, rs_event.height as uint)); }, ffi::MotionNotify => { use CursorPositionChanged; let event: &ffi::XMotionEvent = unsafe { mem::transmute(&xev) }; events.push(CursorPositionChanged(event.x as uint, event.y as uint)); }, ffi::KeyPress | ffi::KeyRelease => { use {Pressed, Released}; let event: &ffi::XKeyEvent = unsafe { mem::transmute(&xev) }; let keysym = unsafe { ffi::XKeycodeToKeysym(self.display, event.keycode as ffi::KeyCode, 0) }; match events::keycode_to_element(keysym as libc::c_uint) { Some(elem) if xev.type_ == ffi::KeyPress => { events.push(Pressed(elem)); }, Some(elem) if xev.type_ == ffi::KeyRelease => { events.push(Released(elem)); }, _ => () } // }, ffi::ButtonPress | ffi::ButtonRelease => { use {Pressed, Released}; let event: &ffi::XButtonEvent = unsafe { mem::transmute(&xev) }; //events.push(CursorPositionChanged(event.x as uint, event.y as uint)); }, _ => () } } events } pub fn wait_events(&self) -> Vec { use std::mem; loop { // this will block until an event arrives, but doesn't remove // it from the queue let mut xev = unsafe { mem::uninitialized() }; unsafe { ffi::XPeekEvent(self.display, &mut xev) }; // calling poll_events() let ev = self.poll_events(); if ev.len() >= 1 { return ev; } } } pub fn make_current(&self) { let res = unsafe { ffi::glXMakeCurrent(self.display, self.window, self.context) }; if res == 0 { fail!("glXMakeCurrent failed"); } } pub fn get_proc_address(&self, addr: &str) -> *const () { use std::c_str::ToCStr; use std::mem; unsafe { addr.with_c_str(|s| { let p = ffi::glXGetProcAddress(mem::transmute(s)) as *const (); if !p.is_null() { return p; } println!("{}", p); p }) } } pub fn swap_buffers(&self) { unsafe { ffi::glXSwapBuffers(self.display, self.window) } } } impl Drop for Window { fn drop(&mut self) { unsafe { ffi::glXDestroyContext(self.display, self.context) } unsafe { ffi::XDestroyWindow(self.display, self.window) } unsafe { ffi::XCloseDisplay(self.display) } } }