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Utilities: Add a simple "shot" utility for grabbing screenshots :^)

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This little CLI program grabs the current screen image from
WindowServer and saves it as a PNG file.
This commit is contained in:
Andreas Kling 2021-03-26 19:55:40 +01:00
parent d9f8f6a2d0
commit f018100d21
2 changed files with 79 additions and 0 deletions
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1
Userland/Utilities/CMakeLists.txt
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@ -38,6 +38,7 @@ target_link_libraries(pape LibGUI)
target_link_libraries(passwd LibCrypt)
target_link_libraries(paste LibGUI)
target_link_libraries(pro LibProtocol)
target_link_libraries(shot LibGUI)
target_link_libraries(su LibCrypt)
target_link_libraries(tar LibArchive LibCompress)
target_link_libraries(test-crypto LibCrypto LibTLS LibLine)

78
Userland/Utilities/shot.cpp Normal file
View file

@ -0,0 +1,78 @@
/*
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/Format.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/DateTime.h>
#include <LibCore/File.h>
#include <LibGUI/Application.h>
#include <LibGUI/WindowServerConnection.h>
#include <LibGfx/PNGWriter.h>
int main(int argc, char** argv)
{
Core::ArgsParser args_parser;
String output_path;
args_parser.add_positional_argument(output_path, "Output filename", "output", Core::ArgsParser::Required::No);
args_parser.parse(argc, argv);
if (output_path.is_empty()) {
output_path = Core::DateTime::now().to_string("screenshot-%Y-%m-%d-%H-%M-%S.png");
}
auto app = GUI::Application::construct(argc, argv);
auto response = GUI::WindowServerConnection::the().send_sync<Messages::WindowServer::GetScreenBitmap>();
auto* bitmap = response->bitmap().bitmap();
if (!bitmap) {
warnln("Failed to grab screenshot");
return 1;
}
Gfx::PNGWriter writer;
auto encoded_bitmap = writer.write(bitmap);
if (encoded_bitmap.is_empty()) {
warnln("Failed to encode PNG");
return 1;
}
auto file_or_error = Core::File::open(output_path, Core::IODevice::ReadWrite);
if (file_or_error.is_error()) {
warnln("Could not open '{}' for writing: {}", output_path, file_or_error.error());
return 1;
}
auto& file = *file_or_error.value();
if (!file.write(encoded_bitmap.data(), encoded_bitmap.size())) {
warnln("Failed to write PNG");
return 1;
}
outln("{}", output_path);
return 0;
}