ColorPickerPushButton.cpp

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// ** INCLUDES **
#include "ColorPickerPushButton.h"
 
#include <QColorDialog>
 
ColorPickerPushButton::ColorPickerPushButton(QWidget* parent /*= 0*/)
    : QPushButton(parent)
{
    setAutoFillBackground(true);
    _color = QColor("white");
}
 
void ColorPickerPushButton::mouseReleaseEvent(QMouseEvent* e)
{
    Q_UNUSED(e);
    QColor newColor = QColorDialog::getColor(_color, nullptr, "Choose a color");
    if (!newColor.isValid())
    {
        return;
    }
 
    setColor(newColor);
 
    emit colorPicked(_color);
}
 
QString ColorPickerPushButton::colorToCss(QColor color)
{
    QString colorStr = "rgb";
    colorStr.append(colorToString(color));
 
    return colorStr;
}
 
QString ColorPickerPushButton::colorToString(QColor color)
{
    QString colorStr = "(";
    colorStr.append(QString::number(color.red()));
    colorStr.append(", ");
    colorStr.append(QString::number(color.green()));
    colorStr.append(", ");
    colorStr.append(QString::number(color.blue()));
    colorStr.append(")");
 
    return colorStr;
}
 
void ColorPickerPushButton::setColor(QColor color)
{
    _color = color;
 
    // Compute text color
    QColor hsv = _color.toHsv();
    QString textColorStr;
    if (hsv.valueF() < 0.5f)
    {
        textColorStr = "color: rgb(255, 255, 255);";
    }
    else
    {
        textColorStr = "color: rgb(0, 0, 0);";
    }
 
    QString stylesheetStr = "background-color: ";
    stylesheetStr.append(colorToCss(_color));
    stylesheetStr.append(";");
    stylesheetStr.append(textColorStr);
    this->setStyleSheet(stylesheetStr);
 
    this->setText(colorToString(_color));
}
 
void ColorPickerPushButton::setColor(double* color)
{
    setColor(QColor::fromRgbF(color[0], color[1], color[2]));
}