#include <QStandardItemModel>

#include <QMouseEvent>

#include <QWheelEvent>

#include "colorwidget.h"

#include "hwconsts.h"

ColorWidget::ColorWidget(QStandardItemModel *colorsModel, QWidget *parent) :

    QWidget(parent)

{

    m_colorsModel = colorsModel;

    setColor(0);

    setStyleSheet("");

    setAutoFillBackground(true);

    connect(m_colorsModel, SIGNAL(dataChanged(QModelIndex,QModelIndex)), this, SLOT(dataChanged(QModelIndex,QModelIndex)));

}

ColorWidget::~ColorWidget()

{

}

void ColorWidget::setColor(int color)

{

    Q_ASSERT_X(color >= 0 && color < m_colorsModel->rowCount(), "ColorWidget::setColor", "Color index out of range");

    m_color = color;

    QStandardItem * item = m_colorsModel->item(m_color);

    QPalette p = palette();

    p.setColor(QPalette::Window, item->data().value<QColor>());

    setPalette(p);

    emit colorChanged(m_color);

}

int ColorWidget::getColor()

{

    return m_color;

}

void ColorWidget::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)

{

    if(m_color >= topLeft.row() && m_color <= bottomRight.row())

        setColor(m_color);

}

void ColorWidget::mousePressEvent(QMouseEvent * event)

{

    switch(event->button())

    {

        case Qt::LeftButton:

            setColor((m_color + 1) % m_colorsModel->rowCount());

            break;

        case Qt::RightButton:

            setColor((m_color + m_colorsModel->rowCount() - 1) % m_colorsModel->rowCount());

            break;

        default:;

    }

}

void ColorWidget::wheelEvent(QWheelEvent *event)

{

    if(event->delta() > 0)

        setColor((m_color + 1) % m_colorsModel->rowCount());

    else

        setColor((m_color + m_colorsModel->rowCount() - 1) % m_colorsModel->rowCount());

}