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https://github.com/RGBCube/serenity
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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.
41 lines
1.5 KiB
C++
41 lines
1.5 KiB
C++
/*
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* Copyright (c) 2021, Nico Weber <thakis@chromium.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCore/ArgsParser.h>
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#include <LibGUI/Application.h>
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#include <LibGUI/WindowServerConnection.h>
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int main(int argc, char** argv)
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{
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int screen = -1;
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int width = -1;
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int height = -1;
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int scale = 1;
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Core::ArgsParser args_parser;
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args_parser.set_general_help("Change the screen resolution.");
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args_parser.add_positional_argument(screen, "Screen", "screen");
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args_parser.add_positional_argument(width, "Width", "width");
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args_parser.add_positional_argument(height, "Height", "height");
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args_parser.add_positional_argument(scale, "Scale Factor", "scale", Core::ArgsParser::Required::No);
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args_parser.parse(argc, argv);
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// A Core::EventLoop is all we need, but WindowServerConnection needs a full Application object.
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char* dummy_argv[] = { argv[0] };
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auto app = GUI::Application::construct(1, dummy_argv);
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auto screen_layout = GUI::WindowServerConnection::the().get_screen_layout();
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if (screen < 0 || (size_t)screen >= screen_layout.screens.size()) {
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warnln("invalid screen index: {}", screen);
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return 1;
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}
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auto& main_screen = screen_layout.screens[screen];
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main_screen.resolution = { width, height };
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auto set_result = GUI::WindowServerConnection::the().set_screen_layout(screen_layout, true);
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if (!set_result.success()) {
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warnln("failed to set resolution: {}", set_result.error_msg());
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return 1;
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}
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}
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