Mirrors/servo
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Only draw on request

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This commit is contained in:
Brian Anderson 2012-04-16 22:53:44 -07:00
parent 0265bc4da2
commit 6dfb977c19
1 changed files with 55 additions and 40 deletions
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95
src/servo/servo.rs
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@ -20,10 +20,15 @@ fn on_osmain<T: send>(f: fn~(comm::port<T>)) -> comm::chan<T> {
// Messages to the platform event handler task
enum osmain_msg {
get_draw_target(comm::chan<AzDrawTargetRef>),
add_key_handler(comm::chan<()>),
draw(comm::chan<()>),
exit
om_get_draw_target(comm::chan<AzDrawTargetRef>),
om_add_key_handler(comm::chan<()>),
om_draw(comm::chan<()>),
om_exit
}
enum draw_msg {
dm_draw,
dm_exit(comm::chan<()>)
}
fn main() {
@ -77,13 +82,13 @@ fn main() {
// Handle messages
if comm::peek(po) {
alt check comm::recv(po) {
add_key_handler(key_ch) {
om_add_key_handler(key_ch) {
key_handlers += [key_ch];
}
get_draw_target(response_ch) {
om_get_draw_target(response_ch) {
comm::send(response_ch, azure_target);
}
draw(response_ch) {
om_draw(response_ch) {
sdl::video::unlock_surface(sdl_surf);
sdl::video::blit_surface(sdl_surf, ptr::null(),
screen, ptr::null());
@ -102,9 +107,9 @@ fn main() {
};
// The drawing task
let draw_exit_ch = task::spawn_listener {|exit_po|
let draw_ch = task::spawn_listener {|po|
let draw_target_po = comm::port();
comm::send(osmain_ch, get_draw_target(comm::chan(draw_target_po)));
comm::send(osmain_ch, om_get_draw_target(comm::chan(draw_target_po)));
let draw_target = comm::recv(draw_target_po);
let red_color = {
@ -123,56 +128,66 @@ fn main() {
};
let green_pattern = AzCreateColorPattern(ptr::addr_of(green_color));
while !comm::peek(exit_po) {
let red_rect = {
x: 100f as azure::AzFloat,
y: 100f as azure::AzFloat,
width: 200f as azure::AzFloat,
height: 200f as azure::AzFloat
};
AzDrawTargetFillRect(
draw_target,
ptr::addr_of(red_rect),
unsafe { unsafe::reinterpret_cast(red_pattern) }
);
let green_rect = {
x: 200f as azure::AzFloat,
y: 200f as azure::AzFloat,
width: 200f as azure::AzFloat,
height: 200f as azure::AzFloat
};
AzDrawTargetFillRect(
draw_target,
ptr::addr_of(green_rect),
unsafe { unsafe::reinterpret_cast(green_pattern) }
);
let draw_po = comm::port();
comm::send(osmain_ch, draw(comm::chan(draw_po)));
comm::recv(draw_po);
let mut exit_confirm_ch = none;
loop {
alt comm::recv::<draw_msg>(po) {
dm_draw {
let red_rect = {
x: 100f as azure::AzFloat,
y: 100f as azure::AzFloat,
width: 200f as azure::AzFloat,
height: 200f as azure::AzFloat
};
AzDrawTargetFillRect(
draw_target,
ptr::addr_of(red_rect),
unsafe { unsafe::reinterpret_cast(red_pattern) }
);
let green_rect = {
x: 200f as azure::AzFloat,
y: 200f as azure::AzFloat,
width: 200f as azure::AzFloat,
height: 200f as azure::AzFloat
};
AzDrawTargetFillRect(
draw_target,
ptr::addr_of(green_rect),
unsafe { unsafe::reinterpret_cast(green_pattern) }
);
let draw_po = comm::port();
comm::send(osmain_ch, om_draw(comm::chan(draw_po)));
comm::recv(draw_po);
}
dm_exit(response_ch) {
exit_confirm_ch = some(response_ch);
break;
}
}
}
AzReleaseColorPattern(red_pattern);
AzReleaseColorPattern(green_pattern);
let exit_confirm_ch = comm::recv(exit_po);
comm::send(exit_confirm_ch, ());
assert exit_confirm_ch.is_some();
comm::send(exit_confirm_ch.get(), ());
};
// The keyboard handler
task::spawn {||
let key_po = comm::port();
comm::send(osmain_ch, add_key_handler(comm::chan(key_po)));
comm::send(osmain_ch, om_add_key_handler(comm::chan(key_po)));
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::send(draw_ch, dm_exit(comm::chan(draw_exit_confirm_po)));
comm::recv(draw_exit_confirm_po);
comm::send(osmain_ch, exit);
comm::send(osmain_ch, om_exit);
break;
}
}
}
}
comm::send(draw_ch, dm_draw);
}