diff options
Diffstat (limited to 'src/api/x11/window/mod.rs')
| -rw-r--r-- | src/api/x11/window/mod.rs | 885 |
1 files changed, 885 insertions, 0 deletions
diff --git a/src/api/x11/window/mod.rs b/src/api/x11/window/mod.rs new file mode 100644 index 0000000..80338c7 --- /dev/null +++ b/src/api/x11/window/mod.rs @@ -0,0 +1,885 @@ +use {Event, BuilderAttribs, MouseCursor}; +use CreationError; +use CreationError::OsError; +use libc; +use std::{mem, ptr}; +use std::cell::Cell; +use std::sync::atomic::AtomicBool; +use std::collections::VecDeque; +use super::ffi; +use std::sync::{Arc, Mutex, Once, ONCE_INIT}; + +use Api; +use CursorState; +use GlRequest; +use PixelFormat; + +pub use self::monitor::{MonitorID, get_available_monitors, get_primary_monitor}; + +mod events; +mod monitor; + +static THREAD_INIT: Once = ONCE_INIT; + +// XOpenIM doesn't seem to be thread-safe +lazy_static! { // TODO: use a static mutex when that's possible, and put me back in my function + static ref GLOBAL_XOPENIM_LOCK: Mutex<()> = Mutex::new(()); +} + +unsafe extern "C" fn x_error_callback(_: *mut ffi::Display, event: *mut ffi::XErrorEvent) -> libc::c_int { + println!("[glutin] x error code={} major={} minor={}!", (*event).error_code, (*event).request_code, (*event).minor_code); + 0 +} + +fn ensure_thread_init() { + THREAD_INIT.call_once(|| { + unsafe { + ffi::XInitThreads(); + ffi::XSetErrorHandler(Some(x_error_callback)); + } + }); +} + +fn with_c_str<F, T>(s: &str, f: F) -> T where F: FnOnce(*const libc::c_char) -> T { + use std::ffi::CString; + let c_str = CString::new(s.as_bytes().to_vec()).unwrap(); + f(c_str.as_ptr()) +} + +struct XWindow { + display: *mut ffi::Display, + window: ffi::Window, + context: ffi::GLXContext, + is_fullscreen: bool, + screen_id: libc::c_int, + xf86_desk_mode: *mut ffi::XF86VidModeModeInfo, + ic: ffi::XIC, + im: ffi::XIM, +} + +unsafe impl Send for XWindow {} +unsafe impl Sync for XWindow {} + +unsafe impl Send for Window {} +unsafe impl Sync for Window {} + +impl Drop for XWindow { + fn drop(&mut self) { + unsafe { + // we don't call MakeCurrent(0, 0) because we are not sure that the context + // is still the current one + ffi::glx::DestroyContext(self.display as *mut _, self.context); + + if self.is_fullscreen { + ffi::XF86VidModeSwitchToMode(self.display, self.screen_id, self.xf86_desk_mode); + ffi::XF86VidModeSetViewPort(self.display, self.screen_id, 0, 0); + } + + ffi::XDestroyIC(self.ic); + ffi::XCloseIM(self.im); + ffi::XDestroyWindow(self.display, self.window); + ffi::XCloseDisplay(self.display); + } + } +} + +#[derive(Clone)] +pub struct WindowProxy { + x: Arc<XWindow>, +} + +impl WindowProxy { + pub fn wakeup_event_loop(&self) { + let mut xev = ffi::XClientMessageEvent { + type_: ffi::ClientMessage, + window: self.x.window, + format: 32, + message_type: 0, + serial: 0, + send_event: 0, + display: self.x.display, + data: unsafe { mem::zeroed() }, + }; + + unsafe { + ffi::XSendEvent(self.x.display, self.x.window, 0, 0, mem::transmute(&mut xev)); + ffi::XFlush(self.x.display); + } + } +} + +pub struct PollEventsIterator<'a> { + window: &'a Window, +} + +impl<'a> Iterator for PollEventsIterator<'a> { + type Item = Event; + + fn next(&mut self) -> Option<Event> { + if let Some(ev) = self.window.pending_events.lock().unwrap().pop_front() { + return Some(ev); + } + + loop { + let mut xev = unsafe { mem::uninitialized() }; + let res = unsafe { ffi::XCheckMaskEvent(self.window.x.display, -1, &mut xev) }; + + if res == 0 { + let res = unsafe { ffi::XCheckTypedEvent(self.window.x.display, ffi::ClientMessage, &mut xev) }; + + if res == 0 { + return None; + } + } + + match xev.get_type() { + ffi::KeymapNotify => { + unsafe { ffi::XRefreshKeyboardMapping(mem::transmute(&xev)); } + }, + + ffi::ClientMessage => { + use events::Event::{Closed, Awakened}; + use std::sync::atomic::Ordering::Relaxed; + + let client_msg: &ffi::XClientMessageEvent = unsafe { mem::transmute(&xev) }; + + if client_msg.data.get_long(0) == self.window.wm_delete_window as libc::c_long { + self.window.is_closed.store(true, Relaxed); + return Some(Closed); + } else { + return Some(Awakened); + } + }, + + ffi::ConfigureNotify => { + use events::Event::Resized; + let cfg_event: &ffi::XConfigureEvent = unsafe { mem::transmute(&xev) }; + let (current_width, current_height) = self.window.current_size.get(); + if current_width != cfg_event.width || current_height != cfg_event.height { + self.window.current_size.set((cfg_event.width, cfg_event.height)); + return Some(Resized(cfg_event.width as u32, cfg_event.height as u32)); + } + }, + + ffi::Expose => { + use events::Event::Refresh; + return Some(Refresh); + }, + + ffi::MotionNotify => { + use events::Event::MouseMoved; + let event: &ffi::XMotionEvent = unsafe { mem::transmute(&xev) }; + return Some(MouseMoved((event.x as i32, event.y as i32))); + }, + + ffi::KeyPress | ffi::KeyRelease => { + use events::Event::{KeyboardInput, ReceivedCharacter}; + use events::ElementState::{Pressed, Released}; + let event: &mut ffi::XKeyEvent = unsafe { mem::transmute(&xev) }; + + if event.type_ == ffi::KeyPress { + let raw_ev: *mut ffi::XKeyEvent = event; + unsafe { ffi::XFilterEvent(mem::transmute(raw_ev), self.window.x.window) }; + } + + let state = if xev.get_type() == ffi::KeyPress { Pressed } else { Released }; + + let written = unsafe { + use std::str; + + let mut buffer: [u8; 16] = [mem::uninitialized(); 16]; + let raw_ev: *mut ffi::XKeyEvent = event; + let count = ffi::Xutf8LookupString(self.window.x.ic, mem::transmute(raw_ev), + mem::transmute(buffer.as_mut_ptr()), + buffer.len() as libc::c_int, ptr::null_mut(), ptr::null_mut()); + + str::from_utf8(&buffer[..count as usize]).unwrap_or("").to_string() + }; + + { + let mut pending = self.window.pending_events.lock().unwrap(); + for chr in written.chars() { + pending.push_back(ReceivedCharacter(chr)); + } + } + + let keysym = unsafe { + ffi::XKeycodeToKeysym(self.window.x.display, event.keycode as ffi::KeyCode, 0) + }; + + let vkey = events::keycode_to_element(keysym as libc::c_uint); + + return Some(KeyboardInput(state, event.keycode as u8, vkey)); + }, + + ffi::ButtonPress | ffi::ButtonRelease => { + use events::Event::{MouseInput, MouseWheel}; + use events::ElementState::{Pressed, Released}; + use events::MouseButton::{Left, Right, Middle}; + + let event: &ffi::XButtonEvent = unsafe { mem::transmute(&xev) }; + + let state = if xev.get_type() == ffi::ButtonPress { Pressed } else { Released }; + + let button = match event.button { + ffi::Button1 => Some(Left), + ffi::Button2 => Some(Middle), + ffi::Button3 => Some(Right), + ffi::Button4 => { + self.window.pending_events.lock().unwrap().push_back(MouseWheel(1)); + None + } + ffi::Button5 => { + self.window.pending_events.lock().unwrap().push_back(MouseWheel(-1)); + None + } + _ => None + }; + + match button { + Some(button) => + return Some(MouseInput(state, button)), + None => () + }; + }, + + _ => () + }; + } + } +} + +pub struct WaitEventsIterator<'a> { + window: &'a Window, +} + +impl<'a> Iterator for WaitEventsIterator<'a> { + type Item = Event; + + fn next(&mut self) -> Option<Event> { + use std::mem; + + while !self.window.is_closed() { + if let Some(ev) = self.window.pending_events.lock().unwrap().pop_front() { + return Some(ev); + } + + // 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.window.x.display, &mut xev) }; + + // calling poll_events() + if let Some(ev) = self.window.poll_events().next() { + return Some(ev); + } + } + + None + } +} + +pub struct Window { + x: Arc<XWindow>, + is_closed: AtomicBool, + wm_delete_window: ffi::Atom, + current_size: Cell<(libc::c_int, libc::c_int)>, + pixel_format: PixelFormat, + /// Events that have been retreived with XLib but not dispatched with iterators yet + pending_events: Mutex<VecDeque<Event>>, + cursor_state: Mutex<CursorState>, +} + +impl Window { + pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> { + ensure_thread_init(); + let dimensions = builder.dimensions.unwrap_or((800, 600)); + + // calling XOpenDisplay + let display = unsafe { + let display = ffi::XOpenDisplay(ptr::null()); + if display.is_null() { + return Err(OsError(format!("XOpenDisplay failed"))); + } + display + }; + + let screen_id = match builder.monitor { + Some(MonitorID(monitor)) => monitor as i32, + None => unsafe { ffi::XDefaultScreen(display) }, + }; + + // getting the FBConfig + let fb_config = unsafe { + let mut visual_attributes = vec![ + ffi::glx::X_RENDERABLE as libc::c_int, 1, + ffi::glx::DRAWABLE_TYPE as libc::c_int, ffi::glx::WINDOW_BIT as libc::c_int, + ffi::glx::RENDER_TYPE as libc::c_int, ffi::glx::RGBA_BIT as libc::c_int, + ffi::glx::X_VISUAL_TYPE as libc::c_int, ffi::glx::TRUE_COLOR as libc::c_int, + ffi::glx::RED_SIZE as libc::c_int, 8, + ffi::glx::GREEN_SIZE as libc::c_int, 8, + ffi::glx::BLUE_SIZE as libc::c_int, 8, + ffi::glx::ALPHA_SIZE as libc::c_int, 8, + ffi::glx::DEPTH_SIZE as libc::c_int, 24, + ffi::glx::STENCIL_SIZE as libc::c_int, 8, + ffi::glx::DOUBLEBUFFER as libc::c_int, 1, + ]; + + if let Some(val) = builder.multisampling { + visual_attributes.push(ffi::glx::SAMPLE_BUFFERS as libc::c_int); + visual_attributes.push(1); + visual_attributes.push(ffi::glx::SAMPLES as libc::c_int); + visual_attributes.push(val as libc::c_int); + } + + if let Some(val) = builder.srgb { + visual_attributes.push(ffi::glx_extra::FRAMEBUFFER_SRGB_CAPABLE_ARB as libc::c_int); + visual_attributes.push(if val {1} else {0}); + } + + visual_attributes.push(0); + + let mut num_fb: libc::c_int = mem::uninitialized(); + + let fb = ffi::glx::ChooseFBConfig(display as *mut _, ffi::XDefaultScreen(display), + visual_attributes.as_ptr(), &mut num_fb); + if fb.is_null() { + return Err(OsError(format!("glx::ChooseFBConfig failed"))); + } + let preferred_fb = *fb; // TODO: choose more wisely + ffi::XFree(fb as *mut _); + preferred_fb + }; + + let mut best_mode = -1; + let modes = unsafe { + let mut mode_num: libc::c_int = mem::uninitialized(); + let mut modes: *mut *mut ffi::XF86VidModeModeInfo = mem::uninitialized(); + if ffi::XF86VidModeGetAllModeLines(display, screen_id, &mut mode_num, &mut modes) == 0 { + return Err(OsError(format!("Could not query the video modes"))); + } + + for i in 0..mode_num { + let mode: ffi::XF86VidModeModeInfo = ptr::read(*modes.offset(i as isize) as *const _); + if mode.hdisplay == dimensions.0 as u16 && mode.vdisplay == dimensions.1 as u16 { + best_mode = i; + } + }; + if best_mode == -1 && builder.monitor.is_some() { + return Err(OsError(format!("Could not find a suitable graphics mode"))); + } + + modes + }; + + let xf86_desk_mode = unsafe { + *modes.offset(0) + }; + + // getting the visual infos + let mut visual_infos: ffi::glx::types::XVisualInfo = unsafe { + let vi = ffi::glx::GetVisualFromFBConfig(display as *mut _, fb_config); + if vi.is_null() { + return Err(OsError(format!("glx::ChooseVisual failed"))); + } + let vi_copy = ptr::read(vi as *const _); + ffi::XFree(vi as *mut _); + vi_copy + }; + + // querying the chosen pixel format + let pixel_format = { + let get_attrib = |attrib: libc::c_int| -> i32 { + let mut value = 0; + unsafe { ffi::glx::GetFBConfigAttrib(display as *mut _, fb_config, attrib, &mut value); } + value + }; + + PixelFormat { + hardware_accelerated: true, + red_bits: get_attrib(ffi::glx::RED_SIZE as libc::c_int) as u8, + green_bits: get_attrib(ffi::glx::GREEN_SIZE as libc::c_int) as u8, + blue_bits: get_attrib(ffi::glx::BLUE_SIZE as libc::c_int) as u8, + alpha_bits: get_attrib(ffi::glx::ALPHA_SIZE as libc::c_int) as u8, + depth_bits: get_attrib(ffi::glx::DEPTH_SIZE as libc::c_int) as u8, + stencil_bits: get_attrib(ffi::glx::STENCIL_SIZE as libc::c_int) as u8, + stereoscopy: get_attrib(ffi::glx::STEREO as libc::c_int) != 0, + double_buffer: get_attrib(ffi::glx::DOUBLEBUFFER as libc::c_int) != 0, + multisampling: if get_attrib(ffi::glx::SAMPLE_BUFFERS as libc::c_int) != 0 { + Some(get_attrib(ffi::glx::SAMPLES as libc::c_int) as u16) + }else { None }, + srgb: get_attrib(ffi::glx_extra::FRAMEBUFFER_SRGB_CAPABLE_ARB as libc::c_int) != 0, + } + }; + + // 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 as *mut _, 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::StructureNotifyMask | + ffi::VisibilityChangeMask | ffi::KeyPressMask | ffi::PointerMotionMask | + ffi::KeyReleaseMask | ffi::ButtonPressMask | + ffi::ButtonReleaseMask | ffi::KeymapStateMask; + swa.border_pixel = 0; + swa.override_redirect = 0; + swa + }; + + let mut window_attributes = ffi::CWBorderPixel | ffi::CWColormap | ffi:: CWEventMask; + if builder.monitor.is_some() { + window_attributes |= ffi::CWOverrideRedirect; + unsafe { + ffi::XF86VidModeSwitchToMode(display, screen_id, *modes.offset(best_mode as isize)); + ffi::XF86VidModeSetViewPort(display, screen_id, 0, 0); + set_win_attr.override_redirect = 1; + } + } + + // finally creating the window + let window = unsafe { + let win = ffi::XCreateWindow(display, root, 0, 0, dimensions.0 as libc::c_uint, + dimensions.1 as libc::c_uint, 0, visual_infos.depth, ffi::InputOutput as libc::c_uint, + visual_infos.visual as *mut _, window_attributes, + &mut set_win_attr); + win + }; + + // set visibility + if builder.visible { + unsafe { + ffi::XMapRaised(display, window); + ffi::XFlush(display); + } + } + + // creating window, step 2 + let wm_delete_window = unsafe { + let mut wm_delete_window = with_c_str("WM_DELETE_WINDOW", |delete_window| + ffi::XInternAtom(display, delete_window, 0) + ); + ffi::XSetWMProtocols(display, window, &mut wm_delete_window, 1); + with_c_str(&*builder.title, |title| {; + ffi::XStoreName(display, window, title); + }); + ffi::XFlush(display); + + wm_delete_window + }; + + // creating IM + let im = unsafe { + let _lock = GLOBAL_XOPENIM_LOCK.lock().unwrap(); + + let im = ffi::XOpenIM(display, ptr::null_mut(), ptr::null_mut(), ptr::null_mut()); + if im.is_null() { + return Err(OsError(format!("XOpenIM failed"))); + } + im + }; + + // creating input context + let ic = unsafe { + let ic = with_c_str("inputStyle", |input_style| + with_c_str("clientWindow", |client_window| + ffi::XCreateIC( + im, input_style, + ffi::XIMPreeditNothing | ffi::XIMStatusNothing, client_window, + window, ptr::null::<()>() + ) + ) + ); + if ic.is_null() { + return Err(OsError(format!("XCreateIC failed"))); + } + ffi::XSetICFocus(ic); + ic + }; + + // Attempt to make keyboard input repeat detectable + unsafe { + let mut supported_ptr = ffi::False; + ffi::XkbSetDetectableAutoRepeat(display, ffi::True, &mut supported_ptr); + if supported_ptr == ffi::False { + return Err(OsError(format!("XkbSetDetectableAutoRepeat failed"))); + } + } + + // Set ICCCM WM_CLASS property based on initial window title + unsafe { + with_c_str(&*builder.title, |c_name| { + let hint = ffi::XAllocClassHint(); + (*hint).res_name = c_name as *mut i8; + (*hint).res_class = c_name as *mut i8; + ffi::XSetClassHint(display, window, hint); + ffi::XFree(hint as *mut libc::c_void); + }); + } + + // creating GL context + let (context, extra_functions) = unsafe { + let mut attributes = Vec::new(); + + match builder.gl_version { + GlRequest::Latest => {}, + GlRequest::Specific(Api::OpenGl, (major, minor)) => { + attributes.push(ffi::glx_extra::CONTEXT_MAJOR_VERSION_ARB as libc::c_int); + attributes.push(major as libc::c_int); + attributes.push(ffi::glx_extra::CONTEXT_MINOR_VERSION_ARB as libc::c_int); + attributes.push(minor as libc::c_int); + }, + GlRequest::Specific(_, _) => panic!("Only OpenGL is supported"), + GlRequest::GlThenGles { opengl_version: (major, minor), .. } => { + attributes.push(ffi::glx_extra::CONTEXT_MAJOR_VERSION_ARB as libc::c_int); + attributes.push(major as libc::c_int); + attributes.push(ffi::glx_extra::CONTEXT_MINOR_VERSION_ARB as libc::c_int); + attributes.push(minor as libc::c_int); + }, + } + + if builder.gl_debug { + attributes.push(ffi::glx_extra::CONTEXT_FLAGS_ARB as libc::c_int); + attributes.push(ffi::glx_extra::CONTEXT_DEBUG_BIT_ARB as libc::c_int); + } + + attributes.push(0); + + // loading the extra GLX functions + let extra_functions = ffi::glx_extra::Glx::load_with(|addr| { + with_c_str(addr, |s| { + use libc; + ffi::glx::GetProcAddress(s as *const u8) as *const libc::c_void + }) + }); + + let share = if let Some(win) = builder.sharing { + win.x.context + } else { + ptr::null() + }; + + let mut context = if extra_functions.CreateContextAttribsARB.is_loaded() { + extra_functions.CreateContextAttribsARB(display as *mut ffi::glx_extra::types::Display, + fb_config, share, 1, attributes.as_ptr()) + } else { + ptr::null() + }; + + if context.is_null() { + context = ffi::glx::CreateContext(display as *mut _, &mut visual_infos, share, 1) + } + + if context.is_null() { + return Err(OsError(format!("GL context creation failed"))); + } + + (context, extra_functions) + }; + + // vsync + if builder.vsync { + unsafe { ffi::glx::MakeCurrent(display as *mut _, window, context) }; + + if extra_functions.SwapIntervalEXT.is_loaded() { + // this should be the most common extension + unsafe { + extra_functions.SwapIntervalEXT(display as *mut _, window, 1); + } + + // checking that it worked + if builder.strict { + let mut swap = unsafe { mem::uninitialized() }; + unsafe { + ffi::glx::QueryDrawable(display as *mut _, window, + ffi::glx_extra::SWAP_INTERVAL_EXT as i32, + &mut swap); + } + + if swap != 1 { + return Err(OsError(format!("Couldn't setup vsync: expected \ + interval `1` but got `{}`", swap))); + } + } + + // GLX_MESA_swap_control is not official + /*} else if extra_functions.SwapIntervalMESA.is_loaded() { + unsafe { + extra_functions.SwapIntervalMESA(1); + }*/ + + } else if extra_functions.SwapIntervalSGI.is_loaded() { + unsafe { + extra_functions.SwapIntervalSGI(1); + } + + } else if builder.strict { + return Err(OsError(format!("Couldn't find any available vsync extension"))); + } + + unsafe { ffi::glx::MakeCurrent(display as *mut _, 0, ptr::null()) }; + } + + // creating the window object + let window = Window { + x: Arc::new(XWindow { + display: display, + window: window, + im: im, + ic: ic, + context: context, + screen_id: screen_id, + is_fullscreen: builder.monitor.is_some(), + xf86_desk_mode: xf86_desk_mode, + }), + is_closed: AtomicBool::new(false), + wm_delete_window: wm_delete_window, + current_size: Cell::new((0, 0)), + pixel_format: pixel_format, + pending_events: Mutex::new(VecDeque::new()), + cursor_state: Mutex::new(CursorState::Normal), + }; + + // returning + Ok(window) + } + + pub fn is_closed(&self) -> bool { + use std::sync::atomic::Ordering::Relaxed; + self.is_closed.load(Relaxed) + } + + pub fn set_title(&self, title: &str) { + with_c_str(title, |title| unsafe { + ffi::XStoreName(self.x.display, self.x.window, title); + ffi::XFlush(self.x.display); + }) + } + + pub fn show(&self) { + unsafe { + ffi::XMapRaised(self.x.display, self.x.window); + ffi::XFlush(self.x.display); + } + } + + pub fn hide(&self) { + unsafe { + ffi::XUnmapWindow(self.x.display, self.x.window); + ffi::XFlush(self.x.display); + } + } + + fn get_geometry(&self) -> Option<(i32, i32, u32, u32, u32)> { + unsafe { + use std::mem; + + let mut root: ffi::Window = mem::uninitialized(); + let mut x: libc::c_int = mem::uninitialized(); + let mut y: libc::c_int = mem::uninitialized(); + let mut width: libc::c_uint = mem::uninitialized(); + let mut height: libc::c_uint = mem::uninitialized(); + let mut border: libc::c_uint = mem::uninitialized(); + let mut depth: libc::c_uint = mem::uninitialized(); + + if ffi::XGetGeometry(self.x.display, self.x.window, + &mut root, &mut x, &mut y, &mut width, &mut height, + &mut border, &mut depth) == 0 + { + return None; + } + + Some((x as i32, y as i32, width as u32, height as u32, border as u32)) + } + } + + pub fn get_position(&self) -> Option<(i32, i32)> { + self.get_geometry().map(|(x, y, _, _, _)| (x, y)) + } + + pub fn set_position(&self, x: i32, y: i32) { + unsafe { ffi::XMoveWindow(self.x.display, self.x.window, x as libc::c_int, y as libc::c_int); } + } + + pub fn get_inner_size(&self) -> Option<(u32, u32)> { + self.get_geometry().map(|(_, _, w, h, _)| (w, h)) + } + + pub fn get_outer_size(&self) -> Option<(u32, u32)> { + self.get_geometry().map(|(_, _, w, h, b)| (w + b, h + b)) // TODO: is this really outside? + } + + pub fn set_inner_size(&self, _x: u32, _y: u32) { + unimplemented!() + } + + pub fn create_window_proxy(&self) -> WindowProxy { + WindowProxy { + x: self.x.clone() + } + } + + pub fn poll_events(&self) -> PollEventsIterator { + PollEventsIterator { + window: self + } + } + + pub fn wait_events(&self) -> WaitEventsIterator { + WaitEventsIterator { + window: self + } + } + + pub unsafe fn make_current(&self) { + let res = ffi::glx::MakeCurrent(self.x.display as *mut _, self.x.window, self.x.context); + if res == 0 { + panic!("glx::MakeCurrent failed"); + } + } + + pub fn is_current(&self) -> bool { + unsafe { ffi::glx::GetCurrentContext() == self.x.context } + } + + pub fn get_proc_address(&self, addr: &str) -> *const () { + use std::mem; + + unsafe { + with_c_str(addr, |s| { + ffi::glx::GetProcAddress(mem::transmute(s)) as *const () + }) + } + } + + pub fn swap_buffers(&self) { + unsafe { ffi::glx::SwapBuffers(self.x.display as *mut _, self.x.window) } + } + + pub fn platform_display(&self) -> *mut libc::c_void { + self.x.display as *mut libc::c_void + } + + pub fn platform_window(&self) -> *mut libc::c_void { + unimplemented!() + } + + /// See the docs in the crate root file. + pub fn get_api(&self) -> ::Api { + ::Api::OpenGl + } + + pub fn get_pixel_format(&self) -> PixelFormat { + self.pixel_format.clone() + } + + pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) { + } + + pub fn set_cursor(&self, cursor: MouseCursor) { + unsafe { + use std::ffi::CString; + let cursor_name = match cursor { + MouseCursor::Alias => "link", + MouseCursor::Arrow => "arrow", + MouseCursor::Cell => "plus", + MouseCursor::Copy => "copy", + MouseCursor::Crosshair => "crosshair", + MouseCursor::Default => "left_ptr", + MouseCursor::Grabbing => "grabbing", + MouseCursor::Hand | MouseCursor::Grab => "hand", + MouseCursor::Help => "question_arrow", + MouseCursor::Move => "move", + MouseCursor::NoDrop => "circle", + MouseCursor::NotAllowed => "crossed_circle", + MouseCursor::Progress => "left_ptr_watch", + + /// Resize cursors + MouseCursor::EResize => "right_side", + MouseCursor::NResize => "top_side", + MouseCursor::NeResize => "top_right_corner", + MouseCursor::NwResize => "top_left_corner", + MouseCursor::SResize => "bottom_side", + MouseCursor::SeResize => "bottom_right_corner", + MouseCursor::SwResize => "bottom_left_corner", + MouseCursor::WResize => "left_side", + MouseCursor::EwResize | MouseCursor::ColResize => "h_double_arrow", + MouseCursor::NsResize | MouseCursor::RowResize => "v_double_arrow", + MouseCursor::NwseResize => "bd_double_arrow", + MouseCursor::NeswResize => "fd_double_arrow", + + MouseCursor::Text | MouseCursor::VerticalText => "xterm", + MouseCursor::Wait => "watch", + + /// TODO: Find matching X11 cursors + MouseCursor::ContextMenu | MouseCursor::NoneCursor | + MouseCursor::AllScroll | MouseCursor::ZoomIn | + MouseCursor::ZoomOut => "left_ptr", + }; + let c_string = CString::new(cursor_name.as_bytes().to_vec()).unwrap(); + let xcursor = ffi::XcursorLibraryLoadCursor(self.x.display, c_string.as_ptr()); + ffi::XDefineCursor (self.x.display, self.x.window, xcursor); + ffi::XFlush(self.x.display); + } + } + + pub fn set_cursor_state(&self, state: CursorState) -> Result<(), String> { + let mut cursor_state = self.cursor_state.lock().unwrap(); + + match (state, *cursor_state) { + (CursorState::Normal, CursorState::Grab) => { + unsafe { + ffi::XUngrabPointer(self.x.display, ffi::CurrentTime); + *cursor_state = CursorState::Normal; + Ok(()) + } + }, + + (CursorState::Grab, CursorState::Normal) => { + unsafe { + *cursor_state = CursorState::Grab; + + match ffi::XGrabPointer( + self.x.display, self.x.window, ffi::False, + (ffi::ButtonPressMask | ffi::ButtonReleaseMask | ffi::EnterWindowMask | + ffi::LeaveWindowMask | ffi::PointerMotionMask | ffi::PointerMotionHintMask | + ffi::Button1MotionMask | ffi::Button2MotionMask | ffi::Button3MotionMask | + ffi::Button4MotionMask | ffi::Button5MotionMask | ffi::ButtonMotionMask | + ffi::KeymapStateMask) as libc::c_uint, + ffi::GrabModeAsync, ffi::GrabModeAsync, + self.x.window, 0, ffi::CurrentTime + ) { + ffi::GrabSuccess => Ok(()), + ffi::AlreadyGrabbed | ffi::GrabInvalidTime | + ffi::GrabNotViewable | ffi::GrabFrozen + => Err("cursor could not be grabbed".to_string()), + _ => unreachable!(), + } + } + }, + + _ => unimplemented!(), + } + } + + pub fn hidpi_factor(&self) -> f32 { + 1.0 + } + + pub fn set_cursor_position(&self, x: i32, y: i32) -> Result<(), ()> { + unsafe { + ffi::XWarpPointer(self.x.display, 0, self.x.window, 0, 0, 0, 0, x, y); + } + + Ok(()) + } +} |