aboutsummaryrefslogtreecommitdiffstats
path: root/src/api/android/mod.rs
blob: ecea9b38e1269fc672ec036b52e0113f6a556343 (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
#![cfg(target_os = "android")]

extern crate android_glue;

use libc;
use std::ffi::{CString};
use std::sync::mpsc::{Receiver, channel};
use {CreationError, Event, MouseCursor};
use CreationError::OsError;
use events::ElementState::{Pressed, Released};
use events::Event::{MouseInput, MouseMoved};
use events::MouseButton;

use std::collections::VecDeque;

use Api;
use BuilderAttribs;
use ContextError;
use CursorState;
use GlContext;
use GlRequest;
use PixelFormat;
use native_monitor::NativeMonitorId;

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

pub struct Window {
    context: EglContext,
    event_rx: Receiver<android_glue::Event>,
}

#[derive(Clone)]
pub struct MonitorID;

mod ffi;

pub fn get_available_monitors() -> VecDeque<MonitorID> {
    let mut rb = VecDeque::new();
    rb.push_back(MonitorID);
    rb
}

pub fn get_primary_monitor() -> MonitorID {
    MonitorID
}

impl MonitorID {
    pub fn get_name(&self) -> Option<String> {
        Some("Primary".to_string())
    }

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

    pub fn get_dimensions(&self) -> (u32, u32) {
        unimplemented!()
    }
}

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

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

    fn next(&mut self) -> Option<Event> {
        match self.window.event_rx.try_recv() {
            Ok(event) => {
                match event {
                    android_glue::Event::EventDown => Some(MouseInput(Pressed, MouseButton::Left)),
                    android_glue::Event::EventUp => Some(MouseInput(Released, MouseButton::Left)),
                    android_glue::Event::EventMove(x, y) => Some(MouseMoved((x as i32, y as i32))),
                    _ => None,
                }
            }
            Err(_) => {
                None
            }
        }
    }
}

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

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

    fn next(&mut self) -> Option<Event> {
        loop {
            // calling poll_events()
            if let Some(ev) = self.window.poll_events().next() {
                return Some(ev);
            }

            // TODO: Implement a proper way of sleeping on the event queue
            // timer::sleep(Duration::milliseconds(16));
        }
    }
}

impl Window {
    pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
        use std::{mem, ptr};

        let native_window = unsafe { android_glue::get_native_window() };
        if native_window.is_null() {
            return Err(OsError(format!("Android's native window is null")));
        }

        let context = try!(EglContext::new(egl::ffi::egl::Egl, &builder.pf_reqs, &builder.opengl,
                                           egl::NativeDisplay::Android)
                                                .and_then(|p| p.finish(native_window as *const _)));

        let (tx, rx) = channel();
        android_glue::add_sender(tx);

        Ok(Window {
            context: context,
            event_rx: rx,
        })
    }

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

    pub fn set_title(&self, _: &str) {
    }

    pub fn show(&self) {
    }

    pub fn hide(&self) {
    }

    pub fn get_position(&self) -> Option<(i32, i32)> {
        None
    }

    pub fn set_position(&self, _x: i32, _y: i32) {
    }

    pub fn get_inner_size(&self) -> Option<(u32, u32)> {
        let native_window = unsafe { android_glue::get_native_window() };

        if native_window.is_null() {
            None
        } else {
            Some((
                unsafe { ffi::ANativeWindow_getWidth(native_window) } as u32,
                unsafe { ffi::ANativeWindow_getHeight(native_window) } as u32
            ))
        }
    }

    pub fn get_outer_size(&self) -> Option<(u32, u32)> {
        self.get_inner_size()
    }

    pub fn set_inner_size(&self, _x: u32, _y: u32) {
    }

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

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

    pub fn get_pixel_format(&self) -> PixelFormat {
        unimplemented!();
    }

    pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) {
    }

    pub fn set_cursor(&self, _: MouseCursor) {
    }

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

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

    pub fn set_cursor_position(&self, x: i32, y: i32) -> Result<(), ()> {
        unimplemented!();
    }
}

unsafe impl Send for Window {}
unsafe impl Sync for Window {}

impl GlContext for Window {
    unsafe fn make_current(&self) -> Result<(), ContextError> {
        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) -> Result<(), ContextError> {
        self.context.swap_buffers()
    }

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

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

#[cfg(feature = "window")]
#[derive(Clone)]
pub struct WindowProxy;

impl WindowProxy {
    pub fn wakeup_event_loop(&self) {
        unimplemented!()
    }
}

pub struct HeadlessContext(EglContext);

impl HeadlessContext {
    /// See the docs in the crate root file.
    pub fn new(builder: BuilderAttribs) -> Result<HeadlessContext, CreationError> {
        let context = try!(EglContext::new(egl::ffi::egl::Egl, &builder, egl::NativeDisplay::Android));
        let context = try!(context.finish_pbuffer(builder.window.dimensions.unwrap_or((800, 600))));     // TODO: 
        Ok(HeadlessContext(context))
    }
}

unsafe impl Send for HeadlessContext {}
unsafe impl Sync for HeadlessContext {}

impl GlContext for HeadlessContext {
    unsafe fn make_current(&self) -> Result<(), ContextError> {
        self.0.make_current()
    }

    fn is_current(&self) -> bool {
        self.0.is_current()
    }

    fn get_proc_address(&self, addr: &str) -> *const libc::c_void {
        self.0.get_proc_address(addr)
    }

    fn swap_buffers(&self) -> Result<(), ContextError> {
        self.0.swap_buffers()
    }

    fn get_api(&self) -> Api {
        self.0.get_api()
    }

    fn get_pixel_format(&self) -> PixelFormat {
        self.0.get_pixel_format()
    }
}