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#include <daguerre/image.hpp>
#include "socket.hpp"
#include "window.hpp"
#include "main.hpp"
#include <memory>
#include <vector>
struct socket_state {
euler::syscall::stream_handle socket;
window *w;
bool try_show_window() {
if (w->is_shown)
return false;
r->lock();
r->add_window(w);
r->unlock();
r->dispatch_render();
return true;
}
bool try_hide_window() {
if (!w->is_shown)
return false;
r->lock();
r->remove_window(w);
r->unlock();
r->dispatch_render();
return true;
}
bool try_set_window_dimensions() {
struct [[gnu::packed]] { uint32_t width; uint32_t height; } packet;
if (euler::syscall::read_from_stream(socket, sizeof(packet), &packet) !=
euler::syscall::stream_result::success)
return false;
if (packet. width > __INT_MAX__ - window::decorations_extra_width ||
packet.height > __INT_MAX__ - window::decorations_extra_height)
return false;
r->lock();
w->set_size(packet.width, packet.height);
w->draw_decorations(r->is_top(w));
r->unlock();
return true;
}
bool try_set_window_title() {
uint32_t length;
if (euler::syscall::read_from_stream(socket, 4, &length) !=
euler::syscall::stream_result::success)
return false;
std::string title;
title.resize(length);
if (euler::syscall::read_from_stream(socket, length, title.data()) !=
euler::syscall::stream_result::success)
return false;
r->lock();
w->title = std::move(title);
w->draw_decorations(r->is_top(w));
r->unlock();
r->dispatch_render();
return true;
}
bool try_update_window_region() {
struct [[gnu::packed]] {
uint32_t start_x; uint32_t start_y; uint32_t width; uint32_t height;
} packet;
if (euler::syscall::read_from_stream(socket, sizeof(packet), &packet) !=
euler::syscall::stream_result::success)
return false;
static_assert(__INT_MAX__ <= __UINT64_MAX__);
if ((uint64_t)packet.start_x + packet. width > (uint64_t)w->contents. width ||
(uint64_t)packet.start_y + packet.height > (uint64_t)w->contents.height)
return false;
daguerre::image<daguerre::hilbert_color> content(packet.width, packet.height);
if (euler::syscall::read_from_stream(
socket, packet.width * packet.height * 4, content.buffer) !=
euler::syscall::stream_result::success)
return false;
r->lock();
w->contents.copy_from(content, packet.start_x, packet.start_y);
r->unlock();
r->dispatch_render();
return true;
}
bool try_process_request() {
uint8_t type;
if (euler::syscall::read_from_stream(socket, 1, &type) !=
euler::syscall::stream_result::success)
return false;
switch (type) {
case 0x00: return try_show_window();
case 0x01: return try_hide_window();
case 0x02: return try_set_window_dimensions();
case 0x03: return try_set_window_title();
case 0x04: return try_update_window_region();
default: return false;
}
}
};
[[noreturn]] void socket_thread_main(euler::syscall::stream_handle socket) {
euler::syscall::set_thread_name("socket thread");
window *w = new window();
socket_state *state = new socket_state {
.socket = socket, .w = w };
while (state->try_process_request()) ;
if (w->is_shown) {
r->lock();
r->remove_window(w);
r->unlock();
}
delete state;
delete w;
euler::syscall::close_stream(socket);
euler::syscall::end_this_thread(0);
}
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