RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-28 13:17:34 +00:00
Code Issues Activity Actions

DisplaySettings+WindowServer: Add support for display connector devices

Browse source
This commit is contained in:
Liav A 2022-04-29 17:56:24 +03:00 • committed by Andreas Kling
parent e6ebf9e5c1
commit d9a2706079
12 changed files with 308 additions and 38 deletions
Download patch file Download diff file Expand all files Collapse all files

95
Userland/Services/WindowServer/ScreenLayout.ipp
View file

@ -236,8 +236,15 @@ bool ScreenLayout::load_config(const Core::ConfigFile& config_file, String* erro
if (!config_file.has_group(group_name))
break;
auto str_mode = config_file.read_entry(group_name, "Mode");
auto mode = str_mode == "Device" ? Screen::Mode::Device : str_mode == "Virtual" ? Screen::Mode::Virtual
: Screen::Mode::Invalid;
Screen::Mode mode { Screen::Mode::Invalid };
if (str_mode == "Device") {
mode = Screen::Mode::Device;
} else if (str_mode == "DisplayConnectorDevice") {
mode = Screen::Mode::DisplayConnectorDevice;
} else if (str_mode == "Virtual") {
mode = Screen::Mode::Virtual;
}
if (mode == Screen::Mode::Invalid) {
*error_msg = String::formatted("Invalid screen mode '{}'", str_mode);
*this = {};
@ -302,6 +309,90 @@ bool ScreenLayout::operator!=(const ScreenLayout& other) const
return false;
}
bool ScreenLayout::try_auto_add_display_connector(String const& device_path)
{
int display_connector_fd = open(device_path.characters(), O_RDWR | O_CLOEXEC);
if (display_connector_fd < 0) {
int err = errno;
dbgln("Error ({}) opening display connector device {}", err, device_path);
return false;
}
ScopeGuard fd_guard([&] {
close(display_connector_fd);
});
FBHeadModeSetting mode_setting {};
memset(&mode_setting, 0, sizeof(FBHeadModeSetting));
if (fb_get_head_mode_setting(display_connector_fd, &mode_setting) < 0) {
int err = errno;
dbgln("Error ({}) querying resolution from display connector device {}", err, device_path);
return false;
}
if (mode_setting.horizontal_active == 0 || mode_setting.vertical_active == 0) {
// Looks like the display is not turned on. Since we don't know what the desired
// resolution should be, use the main display as reference.
if (screens.is_empty())
return false;
auto& main_screen = screens[main_screen_index];
mode_setting.horizontal_active = main_screen.resolution.width();
mode_setting.vertical_active = main_screen.resolution.height();
}
auto append_screen = [&](Gfx::IntRect const& new_screen_rect) {
screens.append({ .mode = Screen::Mode::DisplayConnectorDevice,
.device = device_path,
.location = new_screen_rect.location(),
.resolution = new_screen_rect.size(),
.scale_factor = 1 });
};
if (screens.is_empty()) {
append_screen({ 0, 0, mode_setting.horizontal_active, mode_setting.vertical_active });
return true;
}
auto original_screens = move(screens);
screens = original_screens;
ArmedScopeGuard screens_guard([&] {
screens = move(original_screens);
});
// Now that we know the current resolution, try to find a location that we can add onto
// TODO: make this a little more sophisticated in case a more complex layout is already configured
for (auto& screen : screens) {
auto screen_rect = screen.virtual_rect();
Gfx::IntRect new_screen_rect {
screen_rect.right() + 1,
screen_rect.top(),
(int)mode_setting.horizontal_active,
(int)mode_setting.vertical_active
};
bool collision = false;
for (auto& other_screen : screens) {
if (&screen == &other_screen)
continue;
if (other_screen.virtual_rect().intersects(new_screen_rect)) {
collision = true;
break;
}
}
if (!collision) {
append_screen(new_screen_rect);
if (is_valid()) {
// We got lucky!
screens_guard.disarm();
return true;
}
}
}
dbgln("Failed to add display connector device {} with resolution {}x{} to screen layout", device_path, mode_setting.horizontal_active, mode_setting.vertical_active);
return false;
}
// FIXME: Remove this once framebuffer devices are removed.
bool ScreenLayout::try_auto_add_framebuffer(String const& device_path)
{
int framebuffer_fd = open(device_path.characters(), O_RDWR | O_CLOEXEC);