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dump.cpp

This is an example of how to use the Wayland C++ bindings for dumping information about the running Wayland compositor.

/*
* Copyright (c) 2017-2019, Philipp Kerling
* 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 OWNER 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 <iostream>
#include <cstdint>
#include <wayland-client.hpp>
using namespace wayland;
// Wayland protocol info dumper
class dumper
{
private:
// global objects
display_t display;
registry_t registry;
public:
dumper() = default;
dumper(const dumper&) = delete;
dumper(dumper&&) noexcept = delete;
~dumper() noexcept = default;
dumper& operator=(const dumper&) = delete;
dumper& operator=(dumper&&) noexcept = delete;
void run()
{
std::vector<output_t> outputs;
// retrieve global objects
registry = display.get_registry();
registry.on_global() = [&] (uint32_t name, const std::string& interface, uint32_t version)
{
std::cout << "* Global interface " << interface << " (name " << name << " version " << version << ")" << std::endl;
if(interface == output_t::interface_name)
{
outputs.emplace_back();
auto& output = outputs.back();
registry.bind(name, output, version);
}
};
// Print global information
display.roundtrip();
std::cout << "------" << std::endl;
for(auto& output : outputs)
{
output.on_geometry() = [&](int32_t x, int32_t y, int32_t physw, int32_t physh, output_subpixel subp, const std::string& make, const std::string& model, const output_transform& transform)
{
std::cout << "* Output geometry for " << output.get_id() << ":" << std::endl
<< " Maker: " << make << std::endl
<< " Model: " << model << std::endl
<< " X: " << x << std::endl
<< " Y: " << y << std::endl
<< " PhysW: " << physw << " mm" << std::endl
<< " PhysH: " << physh << " mm" << std::endl
<< " Subpix: " << static_cast<unsigned int>(subp) << std::endl
<< " Transf: " << static_cast<unsigned int>(transform) << std::endl;
};
output.on_scale() = [&](int32_t scale)
{
std::cout << "* Output scale for " << output.get_id() << ": " << scale << std::endl;
};
output.on_mode() = [&](uint32_t flags, int32_t width, int32_t height, int32_t refresh)
{
std::cout << "* Output mode for " << output.get_id() << ":" << std::endl
<< " Width: " << width << std::endl
<< " Height: " << height << std::endl
<< " Refresh: " << refresh << " mHz" << std::endl
<< " Flags: " << flags << std::endl;
};
}
// Print output information
display.roundtrip();
// Release outputs
for(auto &output : outputs)
output.release();
display.roundtrip();
}
};
int main()
{
dumper d;
d.run();
return 0;
}
wayland::display_t
Represents a connection to the compositor and acts as a proxy to the display singleton object.
Definition wayland-client.hpp:479
wayland::display_t::get_registry
registry_t get_registry()
get global registry object
wayland::registry_t
global registry object
Definition wayland-client-protocol.hpp:132
wayland::registry_t::on_global
std::function< void(uint32_t, std::string, uint32_t)> & on_global()
announce global object
Definition wayland-client-protocol.cpp:1606
wayland-client.hpp