/*
	Copyright 2006-2020 The QElectroTech Team
	This file is part of QElectroTech.

	QElectroTech 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, either version 2 of the License, or
	(at your option) any later version.

	QElectroTech 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 QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
*/
#include "imagepropertieswidget.h"

#include "../QPropertyUndoCommand/qpropertyundocommand.h"
#include "../diagram.h"
#include "../diagramimageitem.h"
#include "../ui_imagepropertieswidget.h"

/**
	@brief ImagePropertiesWidget::ImagePropertiesWidget
	Constructor
	@param image : image to edit properties
	@param parent : parent widget
*/
ImagePropertiesWidget::ImagePropertiesWidget(DiagramImageItem *image, QWidget *parent) :
	PropertiesEditorWidget(parent),
	ui(new Ui::ImagePropertiesWidget),
	m_image(nullptr)
{
	ui->setupUi(this);
	this->setDisabled(true);
	setImageItem(image);
}

/**
	@brief ImagePropertiesWidget::~ImagePropertiesWidget
	Destructor
*/
ImagePropertiesWidget::~ImagePropertiesWidget()
{
	delete ui;
}

/**
	@brief ImagePropertiesWidget::setImageItem
	Set the image to edit properties
	@param image : image to edit
*/
void ImagePropertiesWidget::setImageItem(DiagramImageItem *image)
{
	if(!image) return;
	this->setEnabled(true);
	if (m_image == image) return;
	if (m_image)
		disconnect(m_image, &QGraphicsObject::scaleChanged, this, &ImagePropertiesWidget::updateUi);

	m_image = image;
	connect(m_image, &QGraphicsObject::scaleChanged, this, &ImagePropertiesWidget::updateUi);
	m_movable = image->isMovable();
	m_scale = m_image->scale();
	updateUi();
}

/**
	@brief ImagePropertiesWidget::apply
	Apply the change
*/
void ImagePropertiesWidget::apply()
{
	if(!m_image) return;

	if (m_image->diagram())
	{
		if (m_live_edit) disconnect(m_image, &QGraphicsObject::scaleChanged, this, &ImagePropertiesWidget::updateUi);

		QUndoCommand *undo = associatedUndo();
		if (undo)
			m_image->diagram()->undoStack().push(undo);

		if (m_live_edit) connect(m_image, &QGraphicsObject::scaleChanged, this, &ImagePropertiesWidget::updateUi);
	}

	m_scale = m_image->scale();
}

/**
	@brief ImagePropertiesWidget::reset
	Reset the change
*/
void ImagePropertiesWidget::reset()
{
	if(!m_image) return;

	m_image->setScale(m_scale);
	m_image->setMovable(m_movable);
	updateUi();
}

/**
	@brief ImagePropertiesWidget::setLiveEdit
	@param live_edit true -> enable live edit
 *					false -> disable live edit
	@return always true
*/
bool ImagePropertiesWidget::setLiveEdit(bool live_edit)
{
	if (m_live_edit == live_edit) return true;
	m_live_edit = live_edit;

	if (m_live_edit)
	{
		connect (ui->m_scale_slider, &QSlider::sliderReleased, this, &ImagePropertiesWidget::apply);
		connect (ui->m_scale_sb, &QSpinBox::editingFinished, this, &ImagePropertiesWidget::apply);
	}
	else
	{
		disconnect (ui->m_scale_slider, &QSlider::sliderReleased, this, &ImagePropertiesWidget::apply);
		disconnect (ui->m_scale_sb, &QSpinBox::editingFinished, this, &ImagePropertiesWidget::apply);
	}

	return true;
}

/**
	@brief ImagePropertiesWidget::associatedUndo
	@return the change in an undo command (ItemResizerCommand).
	If there is no change return nullptr
*/
QUndoCommand* ImagePropertiesWidget::associatedUndo() const
{

	qreal value = ui->m_scale_slider->value();
	value /= 100;
	if (m_scale == value) return nullptr;
	QPropertyUndoCommand *undo = new QPropertyUndoCommand(m_image, "scale", m_scale, value);
	undo->enableAnimation();
	undo->setText(tr("Modifier la taille d'une image"));
	return undo;
}

/**
	@brief ImagePropertiesWidget::updateUi
	Udpdate the ui, notably when the image to edit change
*/
void ImagePropertiesWidget::updateUi()
{
	if (!m_image) return;
	ui->m_scale_slider->setValue(m_image->scale() * 100);
	ui->m_lock_pos_cb->setChecked(!m_image->isMovable());
}

/**
	@brief ImagePropertiesWidget::on_m_scale_slider_valueChanged
	Update the size of image when move slider.
	@param value
*/
void ImagePropertiesWidget::on_m_scale_slider_valueChanged(int value)
{
		qreal scale = value;
		m_image->setScale(scale / 100);
}

/**
	@brief ImagePropertiesWidget::on_m_lock_pos_cb_clicked
	Set movable or not the image according to corresponding check box
*/
void ImagePropertiesWidget::on_m_lock_pos_cb_clicked()
{
	m_image->setMovable(!ui->m_lock_pos_cb->isChecked());
}