/**

 * Spacenav Simulator Qt

 * Copyright © 2019 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

 *

 * 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/>.

 */

#include <QFormLayout>

#include <QLabel>

#include <QGridLayout>

#include <QObject>

#include "SimulatorWindow.h"

Q_DECLARE_METATYPE(MotionEvent);

Q_DECLARE_METATYPE(ButtonEvent);

SimulatorWindow::SimulatorWindow() {

	resize(640, 480);

	setWindowTitle("Spacenav Simulator");

	QWidget* centralwidget = new QWidget(this);

	QFormLayout* formLayout = new QFormLayout(centralwidget);

	int f = 0;

	formLayout->setWidget(f++, QFormLayout::LabelRole, new QLabel("Buttons:", centralwidget));

	std::vector<QString> buttonLabels = {"0", "1"};

	for (int i = 0; i < buttonLabels.size(); i++) {

		QCheckBox* button = new QCheckBox(centralwidget);

		buttons.push_back(button);

		formLayout->setWidget(f, QFormLayout::LabelRole, new QLabel(buttonLabels[i], centralwidget));

		formLayout->setWidget(f++, QFormLayout::FieldRole, button);

		connect(button, &QCheckBox::stateChanged, [ i, this ](int state) {

			emit buttonEvent({i, state == Qt::CheckState::Checked});

		});

	}

	std::vector<QString> axisLabels = {"X", "Y", "Z"};

	timer = new QTimer(centralwidget);

	connect(timer, &QTimer::timeout, this, &SimulatorWindow::sendMotionEvent);

	timer->setInterval(20);

	formLayout->setWidget(f++, QFormLayout::LabelRole, new QLabel("Motion:", centralwidget));

	for (QString a : axisLabels) {

		QSlider* slider = createSlider(centralwidget);

		motions.push_back(slider);

		formLayout->setWidget(f, QFormLayout::LabelRole, new QLabel(a, centralwidget));

		formLayout->setWidget(f++, QFormLayout::FieldRole, slider);

		connect(slider, &QSlider::valueChanged, this, &SimulatorWindow::sendMotionEvent);

	}

	formLayout->setWidget(f++, QFormLayout::LabelRole, new QLabel("Rotation:", centralwidget));

	for (QString a : axisLabels) {

		QSlider* slider = createSlider(centralwidget);

		rotations.push_back(slider);

		formLayout->setWidget(f, QFormLayout::LabelRole, new QLabel(a, centralwidget));

		formLayout->setWidget(f++, QFormLayout::FieldRole, slider);

		connect(slider, &QSlider::valueChanged, this, &SimulatorWindow::sendMotionEvent);

	}

	formLayout->setWidget(f++, QFormLayout::LabelRole, new QLabel("Actions:", centralwidget));

	centerButton = new QPushButton("Center all", centralwidget);

	connect(centerButton, &QPushButton::clicked, this, &SimulatorWindow::centerAll);

	formLayout->setWidget(f++, QFormLayout::FieldRole, centerButton);

	formLayout->setWidget(f++, QFormLayout::LabelRole, new QLabel("Options:", centralwidget));

	periodicButton = new QCheckBox("Periodic updates", centralwidget);

	connect(periodicButton, &QCheckBox::clicked, [this](bool enabled) {

		if (enabled) timer->start();

		else timer->stop();

	});

	formLayout->setWidget(f++, QFormLayout::FieldRole, periodicButton);

	setCentralWidget(centralwidget);

}

SimulatorWindow::SimulatorWindow(const SimulatorWindow& orig) {

}

SimulatorWindow::~SimulatorWindow() {

}

QSlider* SimulatorWindow::createSlider(QWidget* parent) {

	QSlider* slider = new QSlider(Qt::Orientation::Horizontal, parent);

	slider->setRange(-500, 500);

	slider->setValue(0);

	slider->setTickPosition(QSlider::TicksBelow);

	slider->setTickInterval(100);

	slider->setSingleStep(1);

	return slider;

}

void SimulatorWindow::centerAll() {

	// TODO: add option for suppressing events in sendMotionEvent() and call this method from here instead of through sliders signals, so only one event will be emitted?

	for (QSlider* s : motions) s->setValue(0);

	for (QSlider* s : rotations) s->setValue(0);

}

void SimulatorWindow::sendMotionEvent() {

	MotionEvent event;

	event.x = motions[0]->value();

	event.y = motions[1]->value();

	event.z = motions[2]->value();

	event.rx = rotations[0]->value();

	event.ry = rotations[1]->value();

	event.rz = rotations[2]->value();

	event.period = 0; // TODO: period?

	emit motionEvent(event);

}