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 GlRequest;
pub struct Window {
display: ffi::egl::types::EGLDisplay,
context: ffi::egl::types::EGLContext,
surface: ffi::egl::types::EGLSurface,
event_rx: Receiver<android_glue::Event>,
}
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_dimensions(&self) -> (u32, u32) {
unimplemented!()
}
}
#[cfg(feature = "headless")]
pub struct HeadlessContext(i32);
#[cfg(feature = "headless")]
impl HeadlessContext {
pub fn new(_builder: BuilderAttribs) -> Result<HeadlessContext, CreationError> {
unimplemented!()
}
pub unsafe fn make_current(&self) {
unimplemented!()
}
pub fn is_current(&self) -> bool {
unimplemented!()
}
pub fn get_proc_address(&self, _addr: &str) -> *const () {
unimplemented!()
}
pub fn get_api(&self) -> ::Api {
::Api::OpenGlEs
}
}
#[cfg(feature = "headless")]
unsafe impl Send for HeadlessContext {}
#[cfg(feature = "headless")]
unsafe impl Sync for HeadlessContext {}
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> {
use std::time::Duration;
use std::old_io::timer;
loop {
if let Some(ev) = self.window.poll_events().next() {
return Some(ev);
}
timer::sleep(Duration::milliseconds(16));
}
}
}
impl Window {
pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
use std::{mem, ptr};
if builder.sharing.is_some() {
unimplemented!()
}
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 display = unsafe {
let display = ffi::egl::GetDisplay(mem::transmute(ffi::egl::DEFAULT_DISPLAY));
if display.is_null() {
return Err(OsError("No EGL display connection available".to_string()));
}
display
};
android_glue::write_log("eglGetDisplay succeeded");
let (_major, _minor) = unsafe {
let mut major: ffi::egl::types::EGLint = mem::uninitialized();
let mut minor: ffi::egl::types::EGLint = mem::uninitialized();
if ffi::egl::Initialize(display, &mut major, &mut minor) == 0 {
return Err(OsError(format!("eglInitialize failed")))
}
(major, minor)
};
android_glue::write_log("eglInitialize succeeded");
let use_gles2 = match builder.gl_version {
GlRequest::Specific(Api::OpenGlEs, (2, _)) => true,
GlRequest::Specific(Api::OpenGlEs, _) => false,
GlRequest::Specific(_, _) => panic!("Only OpenGL ES is supported"), GlRequest::GlThenGles { opengles_version: (2, _), .. } => true,
_ => false,
};
let mut attribute_list = vec!();
if use_gles2 {
attribute_list.push_all(&[
ffi::egl::RENDERABLE_TYPE as i32,
ffi::egl::OPENGL_ES2_BIT as i32,
]);
}
{
let (red, green, blue) = match builder.color_bits.unwrap_or(24) {
24 => (8, 8, 8),
16 => (6, 5, 6),
_ => panic!("Bad color_bits"),
};
attribute_list.push_all(&[ffi::egl::RED_SIZE as i32, red]);
attribute_list.push_all(&[ffi::egl::GREEN_SIZE as i32, green]);
attribute_list.push_all(&[ffi::egl::BLUE_SIZE as i32, blue]);
}
attribute_list.push_all(&[
ffi::egl::DEPTH_SIZE as i32,
builder.depth_bits.unwrap_or(8) as i32,
]);
attribute_list.push(ffi::egl::NONE as i32);
let config = unsafe {
let mut num_config: ffi::egl::types::EGLint = mem::uninitialized();
let mut config: ffi::egl::types::EGLConfig = mem::uninitialized();
if ffi::egl::ChooseConfig(display, attribute_list.as_ptr(), &mut config, 1,
&mut num_config) == 0
{
return Err(OsError(format!("eglChooseConfig failed")))
}
if num_config <= 0 {
return Err(OsError(format!("eglChooseConfig returned no available config")))
}
config
};
android_glue::write_log("eglChooseConfig succeeded");
let context = unsafe {
let mut context_attributes = vec!();
if use_gles2 {
context_attributes.push_all(&[ffi::egl::CONTEXT_CLIENT_VERSION as i32, 2]);
}
context_attributes.push(ffi::egl::NONE as i32);
let context = ffi::egl::CreateContext(display, config, ptr::null(),
context_attributes.as_ptr());
if context.is_null() {
return Err(OsError(format!("eglCreateContext failed")))
}
context
};
android_glue::write_log("eglCreateContext succeeded");
let surface = unsafe {
let surface = ffi::egl::CreateWindowSurface(display, config, native_window, ptr::null());
if surface.is_null() {
return Err(OsError(format!("eglCreateWindowSurface failed")))
}
surface
};
android_glue::write_log("eglCreateWindowSurface succeeded");
let (tx, rx) = channel();
android_glue::add_sender(tx);
Ok(Window {
display: display,
context: context,
surface: surface,
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 make_current(&self) {
unsafe {
ffi::egl::MakeCurrent(self.display, self.surface, self.surface, self.context);
}
}
pub fn is_current(&self) -> bool {
unsafe { ffi::egl::GetCurrentContext() == self.context }
}
pub fn get_proc_address(&self, addr: &str) -> *const () {
let addr = CString::from_slice(addr.as_bytes());
let addr = addr.as_ptr();
unsafe {
ffi::egl::GetProcAddress(addr) as *const ()
}
}
pub fn swap_buffers(&self) {
unsafe {
ffi::egl::SwapBuffers(self.display, self.surface);
}
}
pub fn platform_display(&self) -> *mut libc::c_void {
self.display as *mut libc::c_void
}
pub fn platform_window(&self) -> *mut libc::c_void {
unimplemented!()
}
pub fn get_api(&self) -> ::Api {
::Api::OpenGlEs
}
pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) {
}
pub fn set_cursor(&self, _: MouseCursor) {
}
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 {}
#[cfg(feature = "window")]
#[derive(Clone)]
pub struct WindowProxy;
impl WindowProxy {
pub fn wakeup_event_loop(&self) {
unimplemented!()
}
}
#[unsafe_destructor]
impl Drop for Window {
fn drop(&mut self) {
use std::ptr;
unsafe {
android_glue::write_log("Destroying gl-init window");
ffi::egl::DestroySurface(self.display, self.surface);
ffi::egl::DestroyContext(self.display, self.context);
ffi::egl::Terminate(self.display);
}
}
}