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serenity/Userland/Services/WindowServer/EventLoop.cpp
Sam Atkins 92f8514a85 Services: Cast unused IPC::new_client_connection() results to void
These ones all manage their storage internally, whereas the WebContent
and ImageDecoder ones require the caller to manage their lifetime. This
distinction is not obvious to the user without looking through the code,
so an API that makes this clearer would be nice.
2021-12-05 15:31:03 +01:00

143 lines
4.6 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Debug.h>
#include <Kernel/API/MousePacket.h>
#include <WindowServer/ClientConnection.h>
#include <WindowServer/Cursor.h>
#include <WindowServer/EventLoop.h>
#include <WindowServer/Screen.h>
#include <WindowServer/WMClientConnection.h>
#include <WindowServer/WindowManager.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
namespace WindowServer {
EventLoop::EventLoop()
: m_window_server(Core::LocalServer::construct())
, m_wm_server(Core::LocalServer::construct())
{
m_keyboard_fd = open("/dev/keyboard0", O_RDONLY | O_NONBLOCK | O_CLOEXEC);
m_mouse_fd = open("/dev/mouse0", O_RDONLY | O_NONBLOCK | O_CLOEXEC);
bool ok = m_window_server->take_over_from_system_server("/tmp/portal/window");
VERIFY(ok);
ok = m_wm_server->take_over_from_system_server("/tmp/portal/wm");
VERIFY(ok);
m_window_server->on_accept = [&](auto client_socket) {
static int s_next_client_id = 0;
int client_id = ++s_next_client_id;
(void)IPC::new_client_connection<ClientConnection>(move(client_socket), client_id);
};
m_wm_server->on_accept = [&](auto client_socket) {
static int s_next_wm_id = 0;
int wm_id = ++s_next_wm_id;
(void)IPC::new_client_connection<WMClientConnection>(move(client_socket), wm_id);
};
if (m_keyboard_fd >= 0) {
m_keyboard_notifier = Core::Notifier::construct(m_keyboard_fd, Core::Notifier::Read);
m_keyboard_notifier->on_ready_to_read = [this] { drain_keyboard(); };
} else {
dbgln("Couldn't open /dev/keyboard0");
}
if (m_mouse_fd >= 0) {
m_mouse_notifier = Core::Notifier::construct(m_mouse_fd, Core::Notifier::Read);
m_mouse_notifier->on_ready_to_read = [this] { drain_mouse(); };
} else {
dbgln("Couldn't open /dev/mouse0");
}
}
EventLoop::~EventLoop()
{
}
void EventLoop::drain_mouse()
{
auto& screen_input = ScreenInput::the();
MousePacket state;
state.buttons = screen_input.mouse_button_state();
MousePacket packets[32];
ssize_t nread = read(m_mouse_fd, &packets, sizeof(packets));
if (nread < 0) {
perror("EventLoop::drain_mouse read");
return;
}
size_t npackets = nread / sizeof(MousePacket);
if (!npackets)
return;
bool state_is_sent = false;
for (size_t i = 0; i < npackets; ++i) {
auto& packet = packets[i];
dbgln_if(WSMESSAGELOOP_DEBUG, "EventLoop: Mouse X {}, Y {}, Z {}, relative={}", packet.x, packet.y, packet.z, packet.is_relative);
state.is_relative = packet.is_relative;
if (packet.is_relative) {
state.x += packet.x;
state.y -= packet.y;
} else {
state.x = packet.x;
state.y = packet.y;
}
state.z += packet.z;
state_is_sent = false;
if (packet.buttons != state.buttons) {
state.buttons = packet.buttons;
dbgln_if(WSMESSAGELOOP_DEBUG, "EventLoop: Mouse Button Event");
// Swap primary (1) and secondary (2) buttons if checked in Settings.
// Doing the swap here avoids all emulator and hardware issues.
if (WindowManager::the().get_buttons_switched()) {
bool has_primary = state.buttons & MousePacket::Button::LeftButton;
bool has_secondary = state.buttons & MousePacket::Button::RightButton;
state.buttons = state.buttons & ~(MousePacket::Button::LeftButton | MousePacket::Button::RightButton);
// Invert the buttons:
if (has_primary)
state.buttons |= MousePacket::Button::RightButton;
if (has_secondary)
state.buttons |= MousePacket::Button::LeftButton;
}
screen_input.on_receive_mouse_data(state);
state_is_sent = true;
if (state.is_relative) {
state.x = 0;
state.y = 0;
state.z = 0;
}
}
}
if (state_is_sent)
return;
if (state.is_relative && (state.x || state.y || state.z))
screen_input.on_receive_mouse_data(state);
if (!state.is_relative)
screen_input.on_receive_mouse_data(state);
}
void EventLoop::drain_keyboard()
{
auto& screen_input = ScreenInput::the();
for (;;) {
::KeyEvent event;
ssize_t nread = read(m_keyboard_fd, (u8*)&event, sizeof(::KeyEvent));
if (nread == 0)
break;
VERIFY(nread == sizeof(::KeyEvent));
screen_input.on_receive_keyboard_data(event);
}
}
}