mirror of
https://github.com/RGBCube/serenity
synced 2025-05-28 16:05:08 +00:00
aa15bf81e4
This sets the stage so that DisplaySettings can configure the screen layout and set various screen resolutions in one go. It also allows for an easy "atomic" revert of the previous settings.
302 lines
10 KiB
C++
302 lines
10 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include "Screen.h"
|
|
#include "Compositor.h"
|
|
#include "Event.h"
|
|
#include "EventLoop.h"
|
|
#include "WindowManager.h"
|
|
#include <AK/Debug.h>
|
|
#include <Kernel/API/FB.h>
|
|
#include <Kernel/API/MousePacket.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <sys/mman.h>
|
|
#include <unistd.h>
|
|
|
|
namespace WindowServer {
|
|
|
|
NonnullOwnPtrVector<Screen, default_screen_count> Screen::s_screens;
|
|
Screen* Screen::s_main_screen { nullptr };
|
|
Gfx::IntRect Screen::s_bounding_screens_rect {};
|
|
ScreenLayout Screen::s_layout;
|
|
|
|
ScreenInput& ScreenInput::the()
|
|
{
|
|
static ScreenInput s_the;
|
|
return s_the;
|
|
}
|
|
|
|
Screen& ScreenInput::cursor_location_screen()
|
|
{
|
|
auto* screen = Screen::find_by_location(m_cursor_location);
|
|
VERIFY(screen);
|
|
return *screen;
|
|
}
|
|
|
|
const Screen& ScreenInput::cursor_location_screen() const
|
|
{
|
|
auto* screen = Screen::find_by_location(m_cursor_location);
|
|
VERIFY(screen);
|
|
return *screen;
|
|
}
|
|
|
|
bool Screen::apply_layout(ScreenLayout&& screen_layout, String& error_msg)
|
|
{
|
|
if (!screen_layout.is_valid(&error_msg))
|
|
return false;
|
|
|
|
auto screens_backup = move(s_screens);
|
|
auto layout_backup = move(s_layout);
|
|
for (auto& old_screen : screens_backup)
|
|
old_screen.close_device();
|
|
|
|
AK::ArmedScopeGuard rollback([&] {
|
|
for (auto& screen : s_screens)
|
|
screen.close_device();
|
|
s_screens = move(screens_backup);
|
|
s_layout = move(layout_backup);
|
|
for (auto& old_screen : screens_backup) {
|
|
if (!old_screen.open_device()) {
|
|
// Don't set error_msg here, it should already be set
|
|
dbgln("Rolling back screen layout failed: could not open device");
|
|
}
|
|
}
|
|
update_bounding_rect();
|
|
});
|
|
s_layout = move(screen_layout);
|
|
for (size_t index = 0; index < s_layout.screens.size(); index++) {
|
|
auto* screen = WindowServer::Screen::create(s_layout.screens[index]);
|
|
if (!screen) {
|
|
error_msg = String::formatted("Error creating screen #{}", index);
|
|
return false;
|
|
}
|
|
|
|
if (s_layout.main_screen_index == index)
|
|
screen->make_main_screen();
|
|
|
|
screen->open_device();
|
|
}
|
|
|
|
rollback.disarm();
|
|
update_bounding_rect();
|
|
return true;
|
|
}
|
|
|
|
Screen::Screen(ScreenLayout::Screen& screen_info)
|
|
: m_virtual_rect(screen_info.location, { screen_info.resolution.width() / screen_info.scale_factor, screen_info.resolution.height() / screen_info.scale_factor })
|
|
, m_info(screen_info)
|
|
{
|
|
open_device();
|
|
|
|
// If the cursor is not in a valid screen (yet), force it into one
|
|
dbgln("Screen() current physical cursor location: {} rect: {}", ScreenInput::the().cursor_location(), rect());
|
|
if (!find_by_location(ScreenInput::the().cursor_location()))
|
|
ScreenInput::the().set_cursor_location(rect().center());
|
|
}
|
|
|
|
Screen::~Screen()
|
|
{
|
|
close_device();
|
|
}
|
|
|
|
bool Screen::open_device()
|
|
{
|
|
close_device();
|
|
m_framebuffer_fd = open(m_info.device.characters(), O_RDWR | O_CLOEXEC);
|
|
if (m_framebuffer_fd < 0) {
|
|
perror(String::formatted("failed to open {}", m_info.device).characters());
|
|
return false;
|
|
}
|
|
|
|
m_can_set_buffer = (fb_set_buffer(m_framebuffer_fd, 0) == 0);
|
|
set_resolution(true);
|
|
return true;
|
|
}
|
|
|
|
void Screen::close_device()
|
|
{
|
|
if (m_framebuffer_fd >= 0) {
|
|
close(m_framebuffer_fd);
|
|
m_framebuffer_fd = -1;
|
|
}
|
|
if (m_framebuffer) {
|
|
int rc = munmap(m_framebuffer, m_size_in_bytes);
|
|
VERIFY(rc == 0);
|
|
|
|
m_framebuffer = nullptr;
|
|
m_size_in_bytes = 0;
|
|
}
|
|
}
|
|
|
|
void Screen::init()
|
|
{
|
|
set_resolution(true);
|
|
}
|
|
|
|
Screen& Screen::closest_to_rect(const Gfx::IntRect& rect)
|
|
{
|
|
Screen* best_screen = nullptr;
|
|
int best_area = 0;
|
|
for (auto& screen : s_screens) {
|
|
auto r = screen.rect().intersected(rect);
|
|
int area = r.width() * r.height();
|
|
if (!best_screen || area > best_area) {
|
|
best_screen = &screen;
|
|
best_area = area;
|
|
}
|
|
}
|
|
if (!best_screen) {
|
|
// TODO: try to find the best screen in close proximity
|
|
best_screen = &Screen::main();
|
|
}
|
|
return *best_screen;
|
|
}
|
|
|
|
Screen& Screen::closest_to_location(const Gfx::IntPoint& point)
|
|
{
|
|
for (auto& screen : s_screens) {
|
|
if (screen.rect().contains(point))
|
|
return screen;
|
|
}
|
|
// TODO: guess based on how close the point is to the next screen rectangle
|
|
return Screen::main();
|
|
}
|
|
|
|
void Screen::update_bounding_rect()
|
|
{
|
|
if (!s_screens.is_empty()) {
|
|
s_bounding_screens_rect = s_screens[0].rect();
|
|
for (size_t i = 1; i < s_screens.size(); i++)
|
|
s_bounding_screens_rect = s_bounding_screens_rect.united(s_screens[i].rect());
|
|
} else {
|
|
s_bounding_screens_rect = {};
|
|
}
|
|
}
|
|
|
|
bool Screen::set_resolution(bool initial)
|
|
{
|
|
// Remember the screen that the cursor is on. Make sure it stays on the same screen if we change its resolution...
|
|
Screen* screen_with_cursor = nullptr;
|
|
if (!initial)
|
|
screen_with_cursor = &ScreenInput::the().cursor_location_screen();
|
|
|
|
FBResolution physical_resolution { 0, (unsigned)m_info.resolution.width(), (unsigned)m_info.resolution.height() };
|
|
int rc = fb_set_resolution(m_framebuffer_fd, &physical_resolution);
|
|
dbgln_if(WSSCREEN_DEBUG, "Screen #{}: fb_set_resolution() - return code {}", index(), rc);
|
|
|
|
auto on_change_resolution = [&]() {
|
|
if (initial || physical_resolution.width != (unsigned)m_info.resolution.width() || physical_resolution.height != (unsigned)m_info.resolution.height()) {
|
|
if (m_framebuffer) {
|
|
size_t previous_size_in_bytes = m_size_in_bytes;
|
|
int rc = munmap(m_framebuffer, previous_size_in_bytes);
|
|
VERIFY(rc == 0);
|
|
}
|
|
|
|
int rc = fb_get_size_in_bytes(m_framebuffer_fd, &m_size_in_bytes);
|
|
VERIFY(rc == 0);
|
|
|
|
m_framebuffer = (Gfx::RGBA32*)mmap(nullptr, m_size_in_bytes, PROT_READ | PROT_WRITE, MAP_SHARED, m_framebuffer_fd, 0);
|
|
VERIFY(m_framebuffer && m_framebuffer != (void*)-1);
|
|
}
|
|
|
|
m_info.resolution = { physical_resolution.width, physical_resolution.height };
|
|
m_pitch = physical_resolution.pitch;
|
|
if (this == screen_with_cursor) {
|
|
auto& screen_input = ScreenInput::the();
|
|
screen_input.set_cursor_location(screen_input.cursor_location().constrained(rect()));
|
|
}
|
|
};
|
|
|
|
if (rc == 0) {
|
|
on_change_resolution();
|
|
return true;
|
|
}
|
|
if (rc == -1) {
|
|
int err = errno;
|
|
dbgln("Screen #{}: Failed to set resolution {}: {}", index(), m_info.resolution, strerror(err));
|
|
on_change_resolution();
|
|
return false;
|
|
}
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
void Screen::set_buffer(int index)
|
|
{
|
|
VERIFY(m_can_set_buffer);
|
|
int rc = fb_set_buffer(m_framebuffer_fd, index);
|
|
VERIFY(rc == 0);
|
|
}
|
|
|
|
void ScreenInput::set_acceleration_factor(double factor)
|
|
{
|
|
VERIFY(factor >= mouse_accel_min && factor <= mouse_accel_max);
|
|
m_acceleration_factor = factor;
|
|
}
|
|
|
|
void ScreenInput::set_scroll_step_size(unsigned step_size)
|
|
{
|
|
VERIFY(step_size >= scroll_step_size_min);
|
|
m_scroll_step_size = step_size;
|
|
}
|
|
|
|
void ScreenInput::on_receive_mouse_data(const MousePacket& packet)
|
|
{
|
|
auto& current_screen = cursor_location_screen();
|
|
auto prev_location = m_cursor_location;
|
|
if (packet.is_relative) {
|
|
m_cursor_location.translate_by(packet.x * m_acceleration_factor, packet.y * m_acceleration_factor);
|
|
dbgln_if(WSSCREEN_DEBUG, "Screen: New Relative mouse point @ {}", m_cursor_location);
|
|
} else {
|
|
m_cursor_location = { packet.x * current_screen.physical_width() / 0xffff, packet.y * current_screen.physical_height() / 0xffff };
|
|
dbgln_if(WSSCREEN_DEBUG, "Screen: New Absolute mouse point @ {}", m_cursor_location);
|
|
}
|
|
|
|
auto* moved_to_screen = Screen::find_by_location(m_cursor_location);
|
|
if (!moved_to_screen) {
|
|
m_cursor_location = m_cursor_location.constrained(current_screen.rect());
|
|
moved_to_screen = ¤t_screen;
|
|
}
|
|
|
|
unsigned buttons = packet.buttons;
|
|
unsigned prev_buttons = m_mouse_button_state;
|
|
m_mouse_button_state = buttons;
|
|
unsigned changed_buttons = prev_buttons ^ buttons;
|
|
auto post_mousedown_or_mouseup_if_needed = [&](MouseButton button) {
|
|
if (!(changed_buttons & (unsigned)button))
|
|
return;
|
|
auto message = make<MouseEvent>(buttons & (unsigned)button ? Event::MouseDown : Event::MouseUp, m_cursor_location, buttons, button, m_modifiers);
|
|
Core::EventLoop::current().post_event(WindowManager::the(), move(message));
|
|
};
|
|
post_mousedown_or_mouseup_if_needed(MouseButton::Left);
|
|
post_mousedown_or_mouseup_if_needed(MouseButton::Right);
|
|
post_mousedown_or_mouseup_if_needed(MouseButton::Middle);
|
|
post_mousedown_or_mouseup_if_needed(MouseButton::Back);
|
|
post_mousedown_or_mouseup_if_needed(MouseButton::Forward);
|
|
if (m_cursor_location != prev_location) {
|
|
auto message = make<MouseEvent>(Event::MouseMove, m_cursor_location, buttons, MouseButton::None, m_modifiers);
|
|
if (WindowManager::the().dnd_client())
|
|
message->set_mime_data(WindowManager::the().dnd_mime_data());
|
|
Core::EventLoop::current().post_event(WindowManager::the(), move(message));
|
|
}
|
|
|
|
if (packet.z) {
|
|
auto message = make<MouseEvent>(Event::MouseWheel, m_cursor_location, buttons, MouseButton::None, m_modifiers, packet.z * m_scroll_step_size);
|
|
Core::EventLoop::current().post_event(WindowManager::the(), move(message));
|
|
}
|
|
|
|
if (m_cursor_location != prev_location)
|
|
Compositor::the().invalidate_cursor();
|
|
}
|
|
|
|
void ScreenInput::on_receive_keyboard_data(::KeyEvent kernel_event)
|
|
{
|
|
m_modifiers = kernel_event.modifiers();
|
|
auto message = make<KeyEvent>(kernel_event.is_press() ? Event::KeyDown : Event::KeyUp, kernel_event.key, kernel_event.code_point, kernel_event.modifiers(), kernel_event.scancode);
|
|
Core::EventLoop::current().post_event(WindowManager::the(), move(message));
|
|
}
|
|
|
|
}
|