diff options
Diffstat (limited to 'src/x11/mod.rs')
-rw-r--r-- | src/x11/mod.rs | 502 |
1 files changed, 8 insertions, 494 deletions
diff --git a/src/x11/mod.rs b/src/x11/mod.rs index 80a84f7..9d9d25c 100644 --- a/src/x11/mod.rs +++ b/src/x11/mod.rs @@ -1,499 +1,13 @@ -use {Event, WindowBuilder}; -use libc; -use std::{mem, ptr}; -use std::sync::atomics::AtomicBool; +#[cfg(feature = "headless")] +pub use self::headless::HeadlessContext; -pub use self::monitor::{MonitorID, get_available_monitors, get_primary_monitor}; +#[cfg(feature = "window")] +pub use self::window::{Window, MonitorID, get_available_monitors, get_primary_monitor}; -mod events; mod ffi; -mod monitor; -pub struct Window { - display: *mut ffi::Display, - window: ffi::Window, - im: ffi::XIM, - ic: ffi::XIC, - context: ffi::GLXContext, - is_closed: AtomicBool, - wm_delete_window: ffi::Atom, - xf86_desk_mode: *mut ffi::XF86VidModeModeInfo, - screen_id: libc::c_int, - is_fullscreen: bool, -} +#[cfg(feature = "headless")] +mod headless; -impl Window { - pub fn new(builder: WindowBuilder) -> Result<Window, String> { - 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(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 { - static VISUAL_ATTRIBUTES: [libc::c_int, ..23] = [ - ffi::GLX_X_RENDERABLE, 1, - ffi::GLX_DRAWABLE_TYPE, ffi::GLX_WINDOW_BIT, - ffi::GLX_RENDER_TYPE, ffi::GLX_RGBA_BIT, - ffi::GLX_X_VISUAL_TYPE, ffi::GLX_TRUE_COLOR, - ffi::GLX_RED_SIZE, 8, - ffi::GLX_GREEN_SIZE, 8, - ffi::GLX_BLUE_SIZE, 8, - ffi::GLX_ALPHA_SIZE, 8, - ffi::GLX_DEPTH_SIZE, 24, - ffi::GLX_STENCIL_SIZE, 8, - ffi::GLX_DOUBLEBUFFER, 1, - 0 - ]; - - let mut num_fb: libc::c_int = mem::uninitialized(); - - let fb = ffi::glXChooseFBConfig(display, ffi::XDefaultScreen(display), - VISUAL_ATTRIBUTES.as_ptr(), &mut num_fb); - if fb.is_null() { - return Err(format!("glXChooseFBConfig failed")); - } - let preferred_fb = *fb; // TODO: choose more wisely - ffi::XFree(fb as *const libc::c_void); - 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(format!("Could not query the video modes")); - } - - for i in range(0, mode_num) { - let mode: ffi::XF86VidModeModeInfo = **modes.offset(i as int); - if mode.hdisplay == dimensions.val0() as u16 && mode.vdisplay == dimensions.val1() as u16 { - best_mode = i; - } - }; - if best_mode == -1 { - return Err(format!("Could not find a suitable graphics mode")); - } - - modes - }; - - let xf86_desk_mode = unsafe { - *modes.offset(0) - }; - - // getting the visual infos - let visual_infos = unsafe { - let vi = ffi::glXGetVisualFromFBConfig(display, fb_config); - if vi.is_null() { - return Err(format!("glXChooseVisual failed")); - } - let vi_copy = *vi; - ffi::XFree(vi as *const libc::c_void); - vi_copy - }; - - // 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::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 int)); - 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.val0() as libc::c_uint, - dimensions.val1() as libc::c_uint, 0, visual_infos.depth, ffi::InputOutput, - visual_infos.visual, window_attributes, - &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(builder.title.as_slice().as_ptr())); - ffi::XFlush(display); - - wm_delete_window - }; - - // getting the pointer to glXCreateContextAttribs - let create_context_attribs = unsafe { - let mut addr = ffi::glXGetProcAddress(b"glXCreateContextAttribs".as_ptr() - as *const u8) as *const (); - - if addr.is_null() { - addr = ffi::glXGetProcAddress(b"glXCreateContextAttribsARB".as_ptr() - as *const u8) as *const (); - } - - addr.as_ref().map(|addr| { - let addr: extern "system" fn(*mut ffi::Display, ffi::GLXFBConfig, ffi::GLXContext, - ffi::Bool, *const libc::c_int) -> ffi::GLXContext = mem::transmute(addr); - addr - }) - }; - - // creating IM - let im = unsafe { - let im = ffi::XOpenIM(display, ptr::null(), ptr::null_mut(), ptr::null_mut()); - if im.is_null() { - return Err(format!("XOpenIM failed")); - } - im - }; - - // creating input context - let ic = unsafe { - use std::c_str::ToCStr; - - let ic = ffi::XCreateIC(im, "inputStyle".to_c_str().as_ptr(), - ffi::XIMPreeditNothing | ffi::XIMStatusNothing, "clientWindow".to_c_str().as_ptr(), - window, ptr::null()); - if ic.is_null() { - return Err(format!("XCreateIC failed")); - } - ffi::XSetICFocus(ic); - ic - }; - - // Attempt to make keyboard input repeat detectable - unsafe { - let mut supported_ptr = false; - ffi::XkbSetDetectableAutoRepeat(display, true, &mut supported_ptr); - if !supported_ptr { - return Err(format!("XkbSetDetectableAutoRepeat failed")); - } - } - - - // creating GL context - let context = unsafe { - let mut attributes = Vec::new(); - - if builder.gl_version.is_some() { - let version = builder.gl_version.as_ref().unwrap(); - attributes.push(ffi::GLX_CONTEXT_MAJOR_VERSION); - attributes.push(version.val0() as libc::c_int); - attributes.push(ffi::GLX_CONTEXT_MINOR_VERSION); - attributes.push(version.val1() as libc::c_int); - } - - attributes.push(0); - - let context = if create_context_attribs.is_some() { - let create_context_attribs = create_context_attribs.unwrap(); - create_context_attribs(display, fb_config, ptr::null(), 1, - attributes.as_ptr()) - } else { - ffi::glXCreateContext(display, &visual_infos, ptr::null(), 1) - }; - - if context.is_null() { - return Err(format!("GL context creation failed")); - } - - context - }; - - // creating the window object - let window = Window { - display: display, - window: window, - im: im, - ic: ic, - context: context, - is_closed: AtomicBool::new(false), - wm_delete_window: wm_delete_window, - xf86_desk_mode: xf86_desk_mode, - screen_id: screen_id, - is_fullscreen: builder.monitor.is_some(), - }; - - // calling glViewport - unsafe { - let ptr = window.get_proc_address("glViewport"); - assert!(!ptr.is_null()); - let ptr: extern "system" fn(libc::c_int, libc::c_int, libc::c_int, libc::c_int) = - mem::transmute(ptr); - let dimensions = window.get_inner_size().unwrap(); - ptr(0, 0, dimensions.val0() as libc::c_int, dimensions.val1() as libc::c_int); - } - - // returning - Ok(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())); - } - } - - fn get_geometry(&self) -> Option<(int, int, uint, uint)> { - 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.display, self.window, - &mut root, &mut x, &mut y, &mut width, &mut height, - &mut border, &mut depth) == 0 - { - return None; - } - - Some((x as int, y as int, width as uint, height as uint)) - } - } - - pub fn get_position(&self) -> Option<(int, int)> { - self.get_geometry().map(|(x, y, _, _)| (x, y)) - } - - pub fn set_position(&self, x: int, y: int) { - unsafe { ffi::XMoveWindow(self.display, self.window, x as libc::c_int, y as libc::c_int) } - } - - pub fn get_inner_size(&self) -> Option<(uint, uint)> { - self.get_geometry().map(|(_, _, w, h)| (w, h)) - } - - 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<Event> { - 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::KeymapNotify => { - unsafe { ffi::XRefreshKeyboardMapping(&xev) } - }, - - 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 MouseMoved; - let event: &ffi::XMotionEvent = unsafe { mem::transmute(&xev) }; - events.push(MouseMoved((event.x as int, event.y as int))); - }, - - ffi::KeyPress | ffi::KeyRelease => { - use {KeyboardInput, Pressed, Released, ReceivedCharacter, KeyModifiers}; - 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) }; - } - - let state = if xev.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.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.as_slice().slice_to(count as uint)) - .unwrap_or("").to_string() - }; - - for chr in written.as_slice().chars() { - events.push(ReceivedCharacter(chr)); - } - - let keysym = unsafe { - ffi::XKeycodeToKeysym(self.display, event.keycode as ffi::KeyCode, 0) - }; - - let vkey = events::keycode_to_element(keysym as libc::c_uint); - - events.push(KeyboardInput(state, event.keycode as u8, - vkey, KeyModifiers::empty())); - // - }, - - ffi::ButtonPress | ffi::ButtonRelease => { - use {MouseInput, Pressed, Released}; - use {LeftMouseButton, RightMouseButton, MiddleMouseButton, OtherMouseButton}; - let event: &ffi::XButtonEvent = unsafe { mem::transmute(&xev) }; - - let state = if xev.type_ == ffi::ButtonPress { Pressed } else { Released }; - - let button = match event.button { - ffi::Button1 => Some(LeftMouseButton), - ffi::Button2 => Some(MiddleMouseButton), - ffi::Button3 => Some(RightMouseButton), - ffi::Button4 => Some(OtherMouseButton(4)), - ffi::Button5 => Some(OtherMouseButton(5)), - _ => None - }; - - match button { - Some(button) => - events.push(MouseInput(state, button)), - None => () - }; - }, - - _ => () - } - } - - events - } - - pub fn wait_events(&self) -> Vec<Event> { - 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 unsafe fn make_current(&self) { - let res = 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| { - ffi::glXGetProcAddress(mem::transmute(s)) as *const () - }) - } - } - - pub fn swap_buffers(&self) { - unsafe { ffi::glXSwapBuffers(self.display, self.window) } - } -} - -impl Drop for Window { - fn drop(&mut self) { - unsafe { ffi::glXMakeCurrent(self.display, 0, ptr::null()); } - unsafe { ffi::glXDestroyContext(self.display, self.context); } - - if self.is_fullscreen { - unsafe { ffi::XF86VidModeSwitchToMode(self.display, self.screen_id, self.xf86_desk_mode); } - unsafe { ffi::XF86VidModeSetViewPort(self.display, self.screen_id, 0, 0); } - } - - unsafe { ffi::XDestroyIC(self.ic); } - unsafe { ffi::XCloseIM(self.im); } - unsafe { ffi::XDestroyWindow(self.display, self.window); } - unsafe { ffi::XCloseDisplay(self.display); } - } -} +#[cfg(feature = "window")] +mod window; |