/**
* Relational pipes
* Copyright © 2021 František Kučera (Frantovo.cz, GlobalCode.info)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <memory>
#include <string>
#include <vector>
#include <iostream>
#include <sstream>
#include <locale>
#include <codecvt>
#include <stdexcept>
#include <X11/extensions/XTest.h>
#include <relpipe/common/type/typedefs.h>
#include <relpipe/reader/TypeId.h>
#include <relpipe/reader/handlers/RelationalReaderStringHandler.h>
#include <relpipe/reader/handlers/AttributeMetadata.h>
#include "Configuration.h"
namespace relpipe {
namespace out {
namespace x11 {
class X11Handler : public relpipe::reader::handlers::RelationalReaderStringHandler {
private:
class Display {
public:
::Display* display = nullptr;
// TODO: more OOP
virtual ~Display() {
if (display) XCloseDisplay(display);
}
};
class Event {
public:
enum class Type {
KEY,
BUTTON,
MOTION,
UNKNOWN
};
enum class State {
PRESSED,
RELEASED,
UNKNOWN
};
Type type = Type::UNKNOWN;
State state = State::UNKNOWN;
int key = -1;
int button = -1;
unsigned long screen = 0;
unsigned long delay = 1;
int x = -1;
int y = -1;
} currentEvent;
Display display;
Configuration& configuration;
std::wstring_convert<std::codecvt_utf8<wchar_t>> convertor; // TODO: probably not needed
std::vector<relpipe::reader::handlers::AttributeMetadata> attributes;
relpipe::common::type::Integer attributeIndex = 0;
public:
X11Handler(Configuration& configuration) : configuration(configuration) {
display.display = XOpenDisplay(nullptr);
}
void startRelation(relpipe::common::type::StringX name, std::vector<relpipe::reader::handlers::AttributeMetadata> attributes) override {
if (display.display) {
if (this->attributes.empty()) {
this->attributes = attributes;
} else {
throw std::logic_error("Only a single relation can be converted to the X11 format.");
}
} else {
throw std::invalid_argument("Unable to open display. Please check the $DISPLAY variable.");
}
}
void attribute(const relpipe::common::type::StringX& value) override {
if (attributes[attributeIndex].getAttributeName() == L"device") {
// TODO: maybe add some filtering based on device ID
} else if (attributes[attributeIndex].getAttributeName() == L"type") {
if (value == L"key") currentEvent.type = Event::Type::KEY;
else if (value == L"button") currentEvent.type = Event::Type::BUTTON;
else if (value == L"motion") currentEvent.type = Event::Type::MOTION;
else currentEvent.type == Event::Type::UNKNOWN; // TODO: throw exception or print warning?
} else if (attributes[attributeIndex].getAttributeName() == L"state") {
if (value == L"pressed") currentEvent.state = Event::State::PRESSED;
else if (value == L"released") currentEvent.state = Event::State::RELEASED;
else currentEvent.state == Event::State::UNKNOWN; // TODO: throw exception or print warning?
} else if (attributes[attributeIndex].getAttributeName() == L"button") {
currentEvent.button = stol(value);
} else if (attributes[attributeIndex].getAttributeName() == L"key") {
currentEvent.key = stol(value);
} else if (attributes[attributeIndex].getAttributeName() == L"delay") {
currentEvent.delay = stoul(value);
} else if (attributes[attributeIndex].getAttributeName() == L"screen") {
currentEvent.screen = stol(value);
} else if (attributes[attributeIndex].getAttributeName() == L"x") {
currentEvent.x = stol(value);
} else if (attributes[attributeIndex].getAttributeName() == L"y") {
currentEvent.y = stol(value);
} else {
// ignore other attributes
}
attributeIndex++;
if (attributeIndex % attributes.size() == 0) {
if (currentEvent.type == Event::Type::KEY) {
XTestFakeKeyEvent(display.display, currentEvent.key, currentEvent.state == Event::State::PRESSED, 1);
} else if (currentEvent.type == Event::Type::BUTTON) {
XTestFakeButtonEvent(display.display, currentEvent.button, currentEvent.state == Event::State::PRESSED, currentEvent.delay);
} else if (currentEvent.type == Event::Type::MOTION) {
XTestFakeMotionEvent(display.display, currentEvent.screen, currentEvent.x, currentEvent.y, currentEvent.delay);
} else {
std::wcerr << L"Unsupported event" << std::endl;
}
attributeIndex = 0;
currentEvent = Event();
}
}
void endOfPipe() {
// XTestDiscard(display.display); // TODO: wait before discard?
}
};
}
}
}