aboutsummaryrefslogtreecommitdiffstats
path: root/src/api/wayland/mod.rs
blob: 569f93f9cfbcf0f21d94e2d98bb6153931041510 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
#![cfg(target_os = "linux")]
#![allow(unused_variables, dead_code)]

use self::wayland::egl::{EGLSurface, is_egl_available};
use self::wayland::core::{ShellSurface, Surface, Output, ShellFullscreenMethod};

use libc;
use api::dlopen;
use api::egl::Context as EglContext;

use BuilderAttribs;
use CreationError;
use Event;
use PixelFormat;
use CursorState;
use MouseCursor;
use GlContext;

use std::collections::VecDeque;
use std::sync::{Arc, Mutex};
use std::ffi::CString;

use platform::MonitorID as PlatformMonitorID;

use self::context::WaylandContext;

extern crate wayland_client as wayland;

mod context;

lazy_static! {
    static ref WAYLAND_CONTEXT: Option<WaylandContext> = {
        WaylandContext::new()
    };
}

pub fn is_available() -> bool {
    WAYLAND_CONTEXT.is_some()
}

pub struct Window {
    shell_surface: ShellSurface<EGLSurface>,
    pending_events: Arc<Mutex<VecDeque<Event>>>,
    pub context: EglContext,
}

#[derive(Clone)]
pub struct WindowProxy;

impl WindowProxy {
    pub fn wakeup_event_loop(&self) {
        if let Some(ref ctxt) = *WAYLAND_CONTEXT {
            ctxt.display.sync();
        }
    }
}

#[derive(Clone)]
pub struct MonitorID {
    output: Arc<Output>
}

pub fn get_available_monitors() -> VecDeque<MonitorID> {
    WAYLAND_CONTEXT.as_ref().unwrap().outputs.iter().map(|o| MonitorID::new(o.clone())).collect()
}
pub fn get_primary_monitor() -> MonitorID {
    match WAYLAND_CONTEXT.as_ref().unwrap().outputs.iter().next() {
        Some(o) => MonitorID::new(o.clone()),
        None => panic!("No monitor is available.")
    }
}

impl MonitorID {
    fn new(output: Arc<Output>) -> MonitorID {
        MonitorID {
            output: output
        }
    }

    pub fn get_name(&self) -> Option<String> {
        Some(format!("{} - {}", self.output.manufacturer(), self.output.model()))
    }

    pub fn get_native_identifier(&self) -> ::native_monitor::NativeMonitorId {
        ::native_monitor::NativeMonitorId::Unavailable
    }

    pub fn get_dimensions(&self) -> (u32, u32) {
        let (w, h) = self.output.modes()
                                .into_iter()
                                .find(|m| m.is_current())
                                .map(|m| (m.width, m.height))
                                .unwrap();
        (w as u32, h as u32)
    }
}


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(ref ctxt) = *WAYLAND_CONTEXT {
            ctxt.display.dispatch_pending();
        }
        self.window.pending_events.lock().unwrap().pop_front()
    }
}

pub struct WaitEventsIterator<'a> {
    window: &'a Window,
}

impl<'a> Iterator for WaitEventsIterator<'a> {
    type Item = Event;

    fn next(&mut self) -> Option<Event> {
        if let Some(ref ctxt) = *WAYLAND_CONTEXT {
            ctxt.display.dispatch();
        }
        self.window.pending_events.lock().unwrap().pop_front()
    }
}

impl Window {
    pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
        use self::wayland::internals::FFI;

        let wayland_context = match *WAYLAND_CONTEXT {
            Some(ref c) => c,
            None => return Err(CreationError::NotSupported),
        };

        if !is_egl_available() { return Err(CreationError::NotSupported) }

        let (w, h) = builder.dimensions.unwrap_or((800, 600));

        let surface = EGLSurface::new(
            wayland_context.compositor.create_surface(),
            w as i32,
            h as i32
        );

        let shell_surface = wayland_context.shell.get_shell_surface(surface);
        if let Some(PlatformMonitorID::Wayland(ref monitor)) = builder.monitor {
            shell_surface.set_fullscreen(ShellFullscreenMethod::Default, Some(&monitor.output));
        } else {
            shell_surface.set_toplevel();
        }

        let context = {
            let libegl = unsafe { dlopen::dlopen(b"libEGL.so\0".as_ptr() as *const _, dlopen::RTLD_NOW) };
            if libegl.is_null() {
                return Err(CreationError::NotSupported);
            }
            let egl = ::api::egl::ffi::egl::Egl::load_with(|sym| {
                let sym = CString::new(sym).unwrap();
                unsafe { dlopen::dlsym(libegl, sym.as_ptr()) }
            });
            try!(EglContext::new(
                egl,
                builder,
                Some(wayland_context.display.ptr() as *const _),
                (*shell_surface).ptr() as *const _
            ))
        };

        let events = Arc::new(Mutex::new(VecDeque::new()));

        wayland_context.register_surface(shell_surface.get_wsurface().get_id(), events.clone());

        wayland_context.display.flush().unwrap();

        Ok(Window {
            shell_surface: shell_surface,
            pending_events: events,
            context: context
        })
    }

    pub fn is_closed(&self) -> bool {
        // TODO
        false
    }

    pub fn set_title(&self, title: &str) {
        let ctitle = CString::new(title).unwrap();
        self.shell_surface.set_title(&ctitle);
    }

    pub fn show(&self) {
        // TODO
    }

    pub fn hide(&self) {
        // TODO
    }

    pub fn get_position(&self) -> Option<(i32, i32)> {
        // not available with wayland
        None
    }

    pub fn set_position(&self, _x: i32, _y: i32) {
        // not available with wayland
    }

    pub fn get_inner_size(&self) -> Option<(u32, u32)> {
        let (w, h) = self.shell_surface.get_attached_size();
        Some((w as u32, h as u32))
    }

    pub fn get_outer_size(&self) -> Option<(u32, u32)> {
        // maybe available if we draw the border ourselves ?
        // but for now, no.
        None
    }

    pub fn set_inner_size(&self, x: u32, y: u32) {
        self.shell_surface.resize(x as i32, y as i32, 0, 0)
    }

    pub fn create_window_proxy(&self) -> WindowProxy {
        WindowProxy
    }

    pub fn poll_events(&self) -> PollEventsIterator {
        PollEventsIterator {
            window: self
        }
    }

    pub fn wait_events(&self) -> WaitEventsIterator {
        WaitEventsIterator {
            window: self
        }
    }

    pub fn set_window_resize_callback(&mut self, callback: Option<fn(u32, u32)>) {
        if let Some(callback) = callback {
            self.shell_surface.set_configure_callback(
                move |_,w,h| { callback(w as u32, h as u32) }
            );
        } else {
            self.shell_surface.set_configure_callback(
                move |_,_,_| {}
            );
        }
    }

    pub fn set_cursor(&self, cursor: MouseCursor) {
        // TODO
    }

    pub fn set_cursor_state(&self, state: CursorState) -> Result<(), String> {
        // TODO
        Ok(())
    }

    pub fn hidpi_factor(&self) -> f32 {
        1.0
    }

    pub fn set_cursor_position(&self, x: i32, y: i32) -> Result<(), ()> {
        // TODO
        Ok(())
    }

    pub fn platform_display(&self) -> *mut libc::c_void {
        unimplemented!()
    }

    pub fn platform_window(&self) -> *mut libc::c_void {
        unimplemented!()
    }
}

impl GlContext for Window {

    unsafe fn make_current(&self) {
        self.context.make_current()
    }

    fn is_current(&self) -> bool {
        self.context.is_current()
    }

    fn get_proc_address(&self, addr: &str) -> *const libc::c_void {
        self.context.get_proc_address(addr)
    }

    fn swap_buffers(&self) {
        self.context.swap_buffers()
    }

    fn get_api(&self) -> ::Api {
        self.context.get_api()
    }

    fn get_pixel_format(&self) -> PixelFormat {
        self.context.get_pixel_format().clone()
    }
}

impl Drop for Window {
    fn drop(&mut self) {
        if let Some(ref ctxt) = *WAYLAND_CONTEXT {
            ctxt.deregister_surface(self.shell_surface.get_wsurface().get_id())
        }
    }
}