ableos/sysdata/libraries/sunset_proto/src/server.hb

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.{math, log, string, random, buffer, memory} := @use("stn");
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.{Color, Surface, text} := @use("lib:render");
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.{Channel, Window, WindowProps, WindowData, MessageHeader, BUFFER_SERVER, BUFFER_CLIENT, message, permissions, recv_header, recv_message, send_message, send_header, await_message} := @use("lib:sunset_proto")
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WindowServer := struct {
window_count: uint,
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channel: Channel,
// ! replace this with a collection when we get an allocator
windows: [?Window; 10],
font: text.Font,
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}
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// ! in the future this should be safely handled
server := @as(WindowServer, idk)
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psf := @embed("../../../assets/consolefonts/tamsyn/10x20r.psf")
start := fn(): void {
font := text.font_from_psf2(@bitcast(&psf), false)
if font == null {
log.error("server: failed to load asset\0")
return
}
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server = .(
0,
.{client: buffer.create(BUFFER_CLIENT), server: buffer.create(BUFFER_SERVER)},
.(null, null, null, null, null, null, null, null, null, null),
@as(text.Font, font),
)
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log.info("server: started server\0")
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}
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incoming := fn(): bool {
msg := recv_header(server.channel.server)
if msg == null {
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return true
}
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if msg.kind == message.syn {
log.info("server: recv syn\0")
channel := Channel.(buffer.create_nameless(), buffer.create_nameless())
send_message(Channel, message.ack, channel, server.channel.client)
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props := await_message(WindowProps, channel.server)
if props.header.kind != message.props {
return true
}
log.info("server: recv props\0")
// ! do inspection of requested props here
data := WindowData.(props.body, channel, permissions.default)
send_message(WindowData, message.ack, data, channel.client)
surface := new_window_decorations(data.props.dimensions)
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// decorations
{
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title := data.props.title
title_length := string.length(title)
deco_length := title_length * 10
// draw the window tab bar
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surface.put_filled_rect(.(0, 0), .(data.props.dimensions.x + DECO_WIDTH + deco_length, DECO_HEIGHT_TOP), DECO_COLOUR)
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// Draw the window tab
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surface.put_filled_rect(.(0, 0), .(deco_length, DECO_HEIGHT_TOP - 1), DECO_COLOUR_DARKER)
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// Draw the outside box
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surface.put_rect(.(0, 0), data.props.dimensions + .(DECO_WIDTH - 1, DECO_HEIGHT_TOP + DECO_HEIGHT_BOTTOM - 1), DECO_COLOUR)
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surface.put_text(server.font, .(2, 1), .(0, 0, 0, 255), data.props.title)
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}
server.windows[server.window_count] = .(data, surface)
server.window_count += 1
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}
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return true
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}
$DECO_WIDTH := 2
$DECO_HEIGHT_TOP := 20
$DECO_HEIGHT_BOTTOM := 1
$DECO_COLOUR := Color.(100, 200, 255, 255)
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$DECO_COLOUR_DARKER := Color.(89, 57, 89, 255)
new_window_decorations := fn(dimensions: math.Vec2(uint)): Surface {
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return @inline(Surface.new, dimensions.x + DECO_WIDTH, dimensions.y + DECO_HEIGHT_TOP + DECO_HEIGHT_BOTTOM)
}
// ! compositor code. this currently disallows tearing.
collect_frames := fn(): void {
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i := 0
loop if i == 10 break else {
window := server.windows[i]
if window == null {
i += 1
continue
}
header := recv_header(window.data.channel.server)
if header == null {
i += 1
continue
}
if header.kind != message.frame_ready {
i += 1
continue
}
send_header(message.ack, window.data.channel.client)
ptr := await_message(^Color, window.data.channel.server)
if ptr.header.kind != message.ack {
return
}
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window.surface.put_surface(
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Surface.(
ptr.body,
window.data.props.dimensions.x,
window.data.props.dimensions.y,
window.data.props.dimensions.x * window.data.props.dimensions.y,
),
.(DECO_WIDTH / 2, DECO_HEIGHT_TOP),
false,
)
i += 1
}
}
render_clients := fn(screen: Surface): void {
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i := 0
loop if i == 10 break else {
window := server.windows[i]
if window == null {
i += 1
continue
}
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screen.put_surface(window.surface, window.data.props.position, false)
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i += 1
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}
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}