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WindowServer: Add API to set/get screen layouts

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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.
This commit is contained in:
Tom
2021-06-14 21:19:56 -06:00
committed by Andreas Kling
parent 34394044b3
commit aa15bf81e4
Notes: sideshowbarker 2024-07-18 11:58:55 +09:00 
Author: https://github.com/tomuta
Commit: https://github.com/SerenityOS/serenity/commit/aa15bf81e48
Pull-request: https://github.com/SerenityOS/serenity/pull/8032
Reviewed-by: https://github.com/Dexesttp
23 changed files with 558 additions and 228 deletions
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66
Userland/Applications/DisplaySettings/MonitorSettingsWidget.cpp
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@@ -80,23 +80,19 @@ void MonitorSettingsWidget::create_frame()
void MonitorSettingsWidget::load_current_settings()
{
auto ws_config = Core::ConfigFile::open("/etc/WindowServer.ini");
int scale_factor = ws_config->read_num_entry("Screen", "ScaleFactor", 1);
if (scale_factor != 1 && scale_factor != 2) {
dbgln("unexpected ScaleFactor {}, setting to 1", scale_factor);
scale_factor = 1;
m_screen_layout = GUI::WindowServerConnection::the().get_screen_layout();
auto& screen = m_screen_layout.screens[m_screen_layout.main_screen_index];
if (screen.scale_factor != 1 && screen.scale_factor != 2) {
dbgln("unexpected ScaleFactor {}, setting to 1", screen.scale_factor);
screen.scale_factor = 1;
}
(scale_factor == 1 ? m_display_scale_radio_1x : m_display_scale_radio_2x)->set_checked(true);
m_monitor_widget->set_desktop_scale_factor(scale_factor);
(screen.scale_factor == 1 ? m_display_scale_radio_1x : m_display_scale_radio_2x)->set_checked(true);
m_monitor_widget->set_desktop_scale_factor(screen.scale_factor);
// Let's attempt to find the current resolution and select it!
Gfx::IntSize find_size;
find_size.set_width(ws_config->read_num_entry("Screen", "Width", 1024));
find_size.set_height(ws_config->read_num_entry("Screen", "Height", 768));
auto index = m_resolutions.find_first_index(find_size).value_or(0);
Gfx::IntSize m_current_resolution = m_resolutions.at(index);
m_monitor_widget->set_desktop_resolution(m_current_resolution);
auto index = m_resolutions.find_first_index(screen.resolution).value_or(0);
Gfx::IntSize current_resolution = m_resolutions.at(index);
m_monitor_widget->set_desktop_resolution(current_resolution);
m_resolution_combo->set_selected_index(index);
m_monitor_widget->update();
@@ -104,28 +100,19 @@ void MonitorSettingsWidget::load_current_settings()
void MonitorSettingsWidget::apply_settings()
{
// Store the current screen resolution and scale factor in case the user wants to revert to it.
auto ws_config(Core::ConfigFile::open("/etc/WindowServer.ini"));
Gfx::IntSize current_resolution;
current_resolution.set_width(ws_config->read_num_entry("Screen", "Width", 1024));
current_resolution.set_height(ws_config->read_num_entry("Screen", "Height", 768));
int current_scale_factor = ws_config->read_num_entry("Screen", "ScaleFactor", 1);
if (current_scale_factor != 1 && current_scale_factor != 2) {
dbgln("unexpected ScaleFactor {}, setting to 1", current_scale_factor);
current_scale_factor = 1;
}
// TODO: implement multi-screen support
auto& main_screen = m_screen_layout.screens[m_screen_layout.main_screen_index];
main_screen.resolution = m_monitor_widget->desktop_resolution();
main_screen.scale_factor = (m_display_scale_radio_2x->is_checked() ? 2 : 1);
if (current_resolution != m_monitor_widget->desktop_resolution() || current_scale_factor != m_monitor_widget->desktop_scale_factor()) {
u32 display_index = 0; // TODO: implement multiple display support
auto result = GUI::WindowServerConnection::the().set_resolution(display_index, m_monitor_widget->desktop_resolution(), m_monitor_widget->desktop_scale_factor());
if (!result.success()) {
GUI::MessageBox::show(nullptr, String::formatted("Reverting to resolution {}x{} @ {}x", result.resolution().width(), result.resolution().height(), result.scale_factor()),
"Unable to set resolution", GUI::MessageBox::Type::Error);
} else {
// Fetch the latest configuration again, in case it has been changed by someone else.
// This isn't technically race free, but if the user automates changing settings we can't help...
auto current_layout = GUI::WindowServerConnection::the().get_screen_layout();
if (m_screen_layout != current_layout) {
auto result = GUI::WindowServerConnection::the().set_screen_layout(m_screen_layout, false);
if (result.success()) {
auto box = GUI::MessageBox::construct(window(), String::formatted("Do you want to keep the new settings? They will be reverted after 10 seconds."),
String::formatted("New screen resolution: {}x{} @ {}x", m_monitor_widget->desktop_resolution().width(), m_monitor_widget->desktop_resolution().height(),
m_monitor_widget->desktop_scale_factor()),
GUI::MessageBox::Type::Question, GUI::MessageBox::InputType::YesNo);
"Apply new screen layout", GUI::MessageBox::Type::Question, GUI::MessageBox::InputType::YesNo);
box->set_icon(window()->icon());
// If after 10 seconds the user doesn't close the message box, just close it.
@@ -135,12 +122,15 @@ void MonitorSettingsWidget::apply_settings()
// If the user selects "No", closes the window or the window gets closed by the 10 seconds timer, revert the changes.
if (box->exec() != GUI::MessageBox::ExecYes) {
result = GUI::WindowServerConnection::the().set_resolution(display_index, current_resolution, current_scale_factor);
if (!result.success()) {
GUI::MessageBox::show(nullptr, String::formatted("Reverting to resolution {}x{} @ {}x", result.resolution().width(), result.resolution().height(), result.scale_factor()),
"Unable to set resolution", GUI::MessageBox::Type::Error);
auto save_result = GUI::WindowServerConnection::the().save_screen_layout();
if (!save_result.success()) {
GUI::MessageBox::show(window(), String::formatted("Error saving settings: {}", save_result.error_msg()),
"Unable to save setting", GUI::MessageBox::Type::Error);
}
}
} else {
GUI::MessageBox::show(window(), String::formatted("Error setting screen layout: {}", result.error_msg()),
"Unable to apply changes", GUI::MessageBox::Type::Error);
}
}
}