mirror of
https://github.com/italicsjenga/winit-sonoma-fix.git
synced 2025-01-10 21:21:29 +11:00
460 lines
15 KiB
Rust
460 lines
15 KiB
Rust
use {Event, WindowBuilder};
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use libc;
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use std::{mem, ptr};
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use std::sync::atomics::AtomicBool;
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mod events;
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mod ffi;
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pub struct Window {
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display: *mut ffi::Display,
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window: ffi::Window,
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im: ffi::XIM,
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ic: ffi::XIC,
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context: ffi::GLXContext,
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is_closed: AtomicBool,
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wm_delete_window: ffi::Atom,
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}
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pub struct MonitorID(uint);
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pub fn get_available_monitors() -> Vec<MonitorID> {
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unimplemented!()
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}
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pub fn get_primary_monitor() -> MonitorID {
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unimplemented!()
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}
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impl MonitorID {
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pub fn get_name(&self) -> Option<String> {
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Some("<Unknown>".to_string())
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}
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pub fn get_dimensions(&self) -> (uint, uint) {
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unimplemented!()
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}
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}
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impl Window {
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pub fn new(builder: WindowBuilder) -> Result<Window, String> {
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// TODO: temporary
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let dimensions = builder.dimensions;
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// calling XOpenDisplay
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let display = unsafe {
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let display = ffi::XOpenDisplay(ptr::null());
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if display.is_null() {
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return Err(format!("XOpenDisplay failed"));
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}
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display
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};
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// TODO: set error handler?
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// getting the FBConfig
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let fb_config = unsafe {
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static VISUAL_ATTRIBUTES: [libc::c_int, ..23] = [
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ffi::GLX_X_RENDERABLE, 1,
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ffi::GLX_DRAWABLE_TYPE, ffi::GLX_WINDOW_BIT,
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ffi::GLX_RENDER_TYPE, ffi::GLX_RGBA_BIT,
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ffi::GLX_X_VISUAL_TYPE, ffi::GLX_TRUE_COLOR,
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ffi::GLX_RED_SIZE, 8,
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ffi::GLX_GREEN_SIZE, 8,
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ffi::GLX_BLUE_SIZE, 8,
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ffi::GLX_ALPHA_SIZE, 8,
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ffi::GLX_DEPTH_SIZE, 24,
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ffi::GLX_STENCIL_SIZE, 8,
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ffi::GLX_DOUBLEBUFFER, 1,
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0
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];
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let mut num_fb: libc::c_int = mem::uninitialized();
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let fb = ffi::glXChooseFBConfig(display, ffi::XDefaultScreen(display),
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VISUAL_ATTRIBUTES.as_ptr(), &mut num_fb);
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if fb.is_null() {
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return Err(format!("glXChooseFBConfig failed"));
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}
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let preferred_fb = *fb; // TODO: choose more wisely
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ffi::XFree(fb as *const libc::c_void);
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preferred_fb
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};
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// getting the visual infos
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let visual_infos = unsafe {
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let vi = ffi::glXGetVisualFromFBConfig(display, fb_config);
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if vi.is_null() {
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return Err(format!("glXChooseVisual failed"));
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}
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let vi_copy = *vi;
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ffi::XFree(vi as *const libc::c_void);
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vi_copy
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};
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// getting the root window
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let root = unsafe { ffi::XDefaultRootWindow(display) };
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// creating the color map
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let cmap = unsafe {
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let cmap = ffi::XCreateColormap(display, root,
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visual_infos.visual, ffi::AllocNone);
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// TODO: error checking?
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cmap
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};
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// creating
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let mut set_win_attr = {
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let mut swa: ffi::XSetWindowAttributes = unsafe { mem::zeroed() };
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swa.colormap = cmap;
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swa.event_mask = ffi::ExposureMask | ffi::ResizeRedirectMask |
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ffi::VisibilityChangeMask | ffi::KeyPressMask | ffi::PointerMotionMask |
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ffi::KeyPressMask | ffi::KeyReleaseMask | ffi::ButtonPressMask |
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ffi::ButtonReleaseMask | ffi::KeymapStateMask;
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swa
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};
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// finally creating the window
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let window = unsafe {
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let dimensions = dimensions.unwrap_or((800, 600));
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let win = ffi::XCreateWindow(display, root, 50, 50, dimensions.val0() as libc::c_uint,
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dimensions.val1() as libc::c_uint, 0, visual_infos.depth, ffi::InputOutput,
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visual_infos.visual, ffi::CWColormap | ffi::CWEventMask,
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&mut set_win_attr);
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win
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};
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// creating window, step 2
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let wm_delete_window = unsafe {
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use std::c_str::ToCStr;
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ffi::XMapWindow(display, window);
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let mut wm_delete_window = ffi::XInternAtom(display,
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"WM_DELETE_WINDOW".to_c_str().as_ptr() as *const libc::c_char, 0);
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ffi::XSetWMProtocols(display, window, &mut wm_delete_window, 1);
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ffi::XStoreName(display, window, mem::transmute(builder.title.as_slice().as_ptr()));
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ffi::XFlush(display);
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wm_delete_window
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};
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// getting the pointer to glXCreateContextAttribs
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let create_context_attribs = unsafe {
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let mut addr = ffi::glXGetProcAddress(b"glXCreateContextAttribs".as_ptr()
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as *const u8) as *const ();
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if addr.is_null() {
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addr = ffi::glXGetProcAddress(b"glXCreateContextAttribsARB".as_ptr()
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as *const u8) as *const ();
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}
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addr.to_option().map(|addr| {
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let addr: extern "system" fn(*mut ffi::Display, ffi::GLXFBConfig, ffi::GLXContext,
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ffi::Bool, *const libc::c_int) -> ffi::GLXContext = mem::transmute(addr);
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addr
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})
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};
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// creating IM
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let im = unsafe {
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let im = ffi::XOpenIM(display, ptr::null(), ptr::mut_null(), ptr::mut_null());
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if im.is_null() {
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return Err(format!("XOpenIM failed"));
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}
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im
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};
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// creating input context
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let ic = unsafe {
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use std::c_str::ToCStr;
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let ic = ffi::XCreateIC(im, "inputStyle".to_c_str().as_ptr(),
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ffi::XIMPreeditNothing | ffi::XIMStatusNothing, "clientWindow".to_c_str().as_ptr(),
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window, ptr::null());
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if ic.is_null() {
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return Err(format!("XCreateIC failed"));
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}
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ffi::XSetICFocus(ic);
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ic
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};
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// creating GL context
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let context = unsafe {
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let mut attributes = Vec::new();
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if builder.gl_version.is_some() {
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let version = builder.gl_version.as_ref().unwrap();
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attributes.push(ffi::GLX_CONTEXT_MAJOR_VERSION);
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attributes.push(version.val0() as libc::c_int);
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attributes.push(ffi::GLX_CONTEXT_MINOR_VERSION);
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attributes.push(version.val1() as libc::c_int);
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}
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attributes.push(0);
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let context = if create_context_attribs.is_some() {
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let create_context_attribs = create_context_attribs.unwrap();
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create_context_attribs(display, fb_config, ptr::null(), 1,
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attributes.as_ptr())
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} else {
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ffi::glXCreateNewContext(display, fb_config, ffi::GLX_RGBA_TYPE, ptr::null(), 1)
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};
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if context.is_null() {
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return Err(format!("GL context creation failed"));
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}
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context
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};
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// creating the window object
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let window = Window {
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display: display,
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window: window,
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im: im,
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ic: ic,
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context: context,
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is_closed: AtomicBool::new(false),
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wm_delete_window: wm_delete_window,
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};
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// calling glViewport
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unsafe {
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let ptr = window.get_proc_address("glViewport");
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assert!(!ptr.is_null());
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let ptr: extern "system" fn(libc::c_int, libc::c_int, libc::c_int, libc::c_int) =
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mem::transmute(ptr);
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let dimensions = window.get_inner_size().unwrap();
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ptr(0, 0, dimensions.val0() as libc::c_int, dimensions.val1() as libc::c_int);
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}
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// returning
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Ok(window)
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}
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pub fn is_closed(&self) -> bool {
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use std::sync::atomics::Relaxed;
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self.is_closed.load(Relaxed)
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}
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pub fn set_title(&self, title: &str) {
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unsafe {
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ffi::XStoreName(self.display, self.window,
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mem::transmute(title.as_slice().as_ptr()));
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}
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}
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fn get_geometry(&self) -> Option<(int, int, uint, uint)> {
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unsafe {
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use std::mem;
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let mut root: ffi::Window = mem::uninitialized();
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let mut x: libc::c_int = mem::uninitialized();
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let mut y: libc::c_int = mem::uninitialized();
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let mut width: libc::c_uint = mem::uninitialized();
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let mut height: libc::c_uint = mem::uninitialized();
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let mut border: libc::c_uint = mem::uninitialized();
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let mut depth: libc::c_uint = mem::uninitialized();
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if ffi::XGetGeometry(self.display, self.window,
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&mut root, &mut x, &mut y, &mut width, &mut height,
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&mut border, &mut depth) == 0
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{
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return None;
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}
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Some((x as int, y as int, width as uint, height as uint))
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}
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}
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pub fn get_position(&self) -> Option<(int, int)> {
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self.get_geometry().map(|(x, y, _, _)| (x, y))
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}
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pub fn set_position(&self, x: int, y: int) {
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unsafe { ffi::XMoveWindow(self.display, self.window, x as libc::c_int, y as libc::c_int) }
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}
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pub fn get_inner_size(&self) -> Option<(uint, uint)> {
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self.get_geometry().map(|(_, _, w, h)| (w, h))
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}
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pub fn get_outer_size(&self) -> Option<(uint, uint)> {
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unimplemented!()
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}
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pub fn set_inner_size(&self, x: uint, y: uint) {
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unimplemented!()
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}
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pub fn poll_events(&self) -> Vec<Event> {
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use std::mem;
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let mut events = Vec::new();
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loop {
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use std::num::Bounded;
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let mut xev = unsafe { mem::uninitialized() };
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let res = unsafe { ffi::XCheckMaskEvent(self.display, Bounded::max_value(), &mut xev) };
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if res == 0 {
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let res = unsafe { ffi::XCheckTypedEvent(self.display, ffi::ClientMessage, &mut xev) };
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if res == 0 {
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break
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}
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}
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match xev.type_ {
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ffi::KeymapNotify => {
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unsafe { ffi::XRefreshKeyboardMapping(&xev) }
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},
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ffi::ClientMessage => {
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use Closed;
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use std::sync::atomics::Relaxed;
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let client_msg: &ffi::XClientMessageEvent = unsafe { mem::transmute(&xev) };
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if client_msg.l[0] == self.wm_delete_window as libc::c_long {
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self.is_closed.store(true, Relaxed);
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events.push(Closed);
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}
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},
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ffi::ResizeRequest => {
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use Resized;
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let rs_event: &ffi::XResizeRequestEvent = unsafe { mem::transmute(&xev) };
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events.push(Resized(rs_event.width as uint, rs_event.height as uint));
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},
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ffi::MotionNotify => {
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use MouseMoved;
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let event: &ffi::XMotionEvent = unsafe { mem::transmute(&xev) };
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events.push(MouseMoved((event.x as int, event.y as int)));
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},
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ffi::KeyPress | ffi::KeyRelease => {
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use {KeyboardInput, Pressed, Released, ReceivedCharacter, KeyModifiers};
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let event: &mut ffi::XKeyEvent = unsafe { mem::transmute(&xev) };
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if event.type_ == ffi::KeyPress {
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let raw_ev: *mut ffi::XKeyEvent = event;
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unsafe { ffi::XFilterEvent(mem::transmute(raw_ev), self.window) };
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}
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let state = if xev.type_ == ffi::KeyPress { Pressed } else { Released };
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let written = unsafe {
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use std::str;
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let mut buffer: [u8, ..16] = [mem::uninitialized(), ..16];
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let raw_ev: *mut ffi::XKeyEvent = event;
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let count = ffi::Xutf8LookupString(self.ic, mem::transmute(raw_ev),
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mem::transmute(buffer.as_mut_ptr()),
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buffer.len() as libc::c_int, ptr::mut_null(), ptr::mut_null());
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str::from_utf8(buffer.as_slice().slice_to(count as uint))
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.unwrap_or("").to_string()
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};
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for chr in written.as_slice().chars() {
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events.push(ReceivedCharacter(chr));
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}
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let keysym = unsafe {
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ffi::XKeycodeToKeysym(self.display, event.keycode as ffi::KeyCode, 0)
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};
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let vkey = events::keycode_to_element(keysym as libc::c_uint);
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events.push(KeyboardInput(state, event.keycode as u8,
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vkey, KeyModifiers::empty()));
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//
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},
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ffi::ButtonPress | ffi::ButtonRelease => {
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use {MouseInput, Pressed, Released};
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use {LeftMouseButton, RightMouseButton, MiddleMouseButton, OtherMouseButton};
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let event: &ffi::XButtonEvent = unsafe { mem::transmute(&xev) };
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let state = if xev.type_ == ffi::ButtonPress { Pressed } else { Released };
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let button = match event.button {
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ffi::Button1 => Some(LeftMouseButton),
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ffi::Button2 => Some(MiddleMouseButton),
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ffi::Button3 => Some(RightMouseButton),
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ffi::Button4 => Some(OtherMouseButton(4)),
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ffi::Button5 => Some(OtherMouseButton(5)),
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_ => None
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};
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match button {
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Some(button) =>
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events.push(MouseInput(state, button)),
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None => ()
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};
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},
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_ => ()
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}
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}
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events
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}
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pub fn wait_events(&self) -> Vec<Event> {
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use std::mem;
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loop {
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// this will block until an event arrives, but doesn't remove
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// it from the queue
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let mut xev = unsafe { mem::uninitialized() };
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unsafe { ffi::XPeekEvent(self.display, &mut xev) };
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// calling poll_events()
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let ev = self.poll_events();
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if ev.len() >= 1 {
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return ev;
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}
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}
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}
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pub unsafe fn make_current(&self) {
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let res = ffi::glXMakeCurrent(self.display, self.window, self.context);
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if res == 0 {
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fail!("glXMakeCurrent failed");
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}
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}
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pub fn get_proc_address(&self, addr: &str) -> *const () {
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use std::c_str::ToCStr;
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use std::mem;
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unsafe {
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addr.with_c_str(|s| {
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let p = ffi::glXGetProcAddress(mem::transmute(s)) as *const ();
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if !p.is_null() { return p; }
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println!("{}", p);
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p
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})
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}
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}
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pub fn swap_buffers(&self) {
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unsafe { ffi::glXSwapBuffers(self.display, self.window) }
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}
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}
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impl Drop for Window {
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fn drop(&mut self) {
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unsafe { ffi::glXDestroyContext(self.display, self.context); }
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unsafe { ffi::XDestroyIC(self.ic); }
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unsafe { ffi::XCloseIM(self.im); }
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unsafe { ffi::XDestroyWindow(self.display, self.window); }
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unsafe { ffi::XCloseDisplay(self.display); }
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}
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}
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