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Put the platform event loop, drawing, and key handling is different tasks

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This commit is contained in:
Brian Anderson 2012-04-16 21:55:46 -07:00
parent a661d59e90
commit 7efdd1e9dc
1 changed files with 52 additions and 25 deletions
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77
src/servo/servo.rs
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@ -4,6 +4,7 @@ import azure::bindgen::*;
import azure::cairo;
import azure::cairo::bindgen::*;
// A function for spawning into the platform's main thread
fn on_osmain<T: send>(f: fn~(comm::port<T>)) -> comm::chan<T> {
let builder = task::builder();
let opts = {
@ -17,10 +18,11 @@ fn on_osmain<T: send>(f: fn~(comm::port<T>)) -> comm::chan<T> {
ret task::run_listener(builder, f);
}
// Messages to the platform event handler task
enum osmain_msg {
get_draw_target(comm::chan<AzDrawTargetRef>),
add_key_handler(comm::chan<()>),
draw(AzDrawTargetRef, comm::chan<()>),
draw(comm::chan<()>),
exit
}
@ -61,30 +63,6 @@ fn main() {
assert !azure_target.is_null();
loop {
let color = {
r: 1f as azure::AzFloat,
g: 1f as azure::AzFloat,
b: 1f as azure::AzFloat,
a: 0.5f as azure::AzFloat
};
let pattern = AzCreateColorPattern(ptr::addr_of(color));
let rect = {
x: 100f as azure::AzFloat,
y: 100f as azure::AzFloat,
width: 100f as azure::AzFloat,
height: 100f as azure::AzFloat
};
AzDrawTargetFillRect(
azure_target,
ptr::addr_of(rect),
unsafe { unsafe::reinterpret_cast(pattern) });
AzReleaseColorPattern(pattern);
sdl::video::unlock_surface(sdl_surf);
sdl::video::blit_surface(sdl_surf, ptr::null(),
screen, ptr::null());
sdl::video::lock_surface(sdl_surf);
sdl::video::flip(screen);
sdl::event::poll_event {|event|
alt event {
sdl::event::keydown_event(_) {
@ -102,6 +80,17 @@ fn main() {
add_key_handler(key_ch) {
key_handlers += [key_ch];
}
get_draw_target(response_ch) {
comm::send(response_ch, azure_target);
}
draw(response_ch) {
sdl::video::unlock_surface(sdl_surf);
sdl::video::blit_surface(sdl_surf, ptr::null(),
screen, ptr::null());
sdl::video::lock_surface(sdl_surf);
sdl::video::flip(screen);
comm::send(response_ch, ());
}
exit { break; }
}
}
@ -112,6 +101,40 @@ fn main() {
sdl::quit();
};
// The drawing task
let draw_exit_ch = task::spawn_listener {|exit_po|
let draw_target_po = comm::port();
comm::send(osmain_ch, get_draw_target(comm::chan(draw_target_po)));
let draw_target = comm::recv(draw_target_po);
while !comm::peek(exit_po) {
let color = {
r: 1f as azure::AzFloat,
g: 1f as azure::AzFloat,
b: 1f as azure::AzFloat,
a: 0.5f as azure::AzFloat
};
let pattern = AzCreateColorPattern(ptr::addr_of(color));
let rect = {
x: 100f as azure::AzFloat,
y: 100f as azure::AzFloat,
width: 100f as azure::AzFloat,
height: 100f as azure::AzFloat
};
AzDrawTargetFillRect(
draw_target,
ptr::addr_of(rect),
unsafe { unsafe::reinterpret_cast(pattern) });
AzReleaseColorPattern(pattern);
let draw_po = comm::port();
comm::send(osmain_ch, draw(comm::chan(draw_po)));
comm::recv(draw_po);
}
let exit_confirm_ch = comm::recv(exit_po);
comm::send(exit_confirm_ch, ());
};
// The keyboard handler
task::spawn {||
let key_po = comm::port();
@ -119,10 +142,14 @@ fn main() {
loop {
alt comm::recv(key_po) {
_ {
let draw_exit_confirm_po = comm::port();
comm::send(draw_exit_ch, comm::chan(draw_exit_confirm_po));
comm::recv(draw_exit_confirm_po);
comm::send(osmain_ch, exit);
break;
}
}
}
}
}