#include "coloredit.h"

#include <QHBoxLayout>
#include <QPushButton>

QColor fromVec3(glm::vec3 vec) {
    int r = 0, g = 0, b = 0;

    if(vec.x != 0)
        r = static_cast<int>(255.0f * vec.x);

    if(vec.y != 0)
        g = static_cast<int>(255.0f * vec.y);

    if(vec.z != 0)
        b = static_cast<int>(255.0f * vec.z);

    return QColor::fromRgb(r, g, b);
}

glm::vec3 fromQColor(QColor color) {
    glm::vec3 vec;

    int r, g, b, a;
    color.getRgb(&r, &g, &b, &a);

    vec.x = r / 255.0f;
    vec.y = g / 255.0f;
    vec.z = b / 255.0f;

    return vec;
}

ColorEdit::ColorEdit(glm::vec3& ref, QWidget* parent) : QWidget(parent), reference(ref) {
    QHBoxLayout* itemsLayout = new QHBoxLayout(this);

    QPushButton* colorButton = new QPushButton();
    colorButton->setFlat(true);

    QPalette pal = colorButton->palette();
    pal.setColor(QPalette::Button, fromVec3(reference));

    colorButton->setAutoFillBackground(true);
    colorButton->setPalette(pal);
    colorButton->update();

    connect(colorButton, &QPushButton::clicked, [=](bool) {
        QColor oldcolor = fromVec3(reference);

        QColor newcolor = QColorDialog::getColor(oldcolor);

        reference = fromQColor(newcolor);

        QPalette newpal = colorButton->palette();
        newpal.setColor(QPalette::Button, newcolor);

        colorButton->setPalette(newpal);
        colorButton->update();

        emit onValueChanged();
    });

    itemsLayout->addWidget(colorButton);
}