#include "svg_icon.h"

//    This file is part of JustAudio.

//    JustAudio 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 3 of the License, or
//    (at your option) any later version.

//    JustAudio 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 BashWire under the GPL.txt file. If not, see
//    <http://www.gnu.org/licenses/>.

SVGIcon::SVGIcon(const QString &name, const QString &desc, bool toggle, QWidget *parent) : QToolButton(parent)
{
    auto action = new QAction(this);

    setObjectName(name);
    setMinimumHeight(32);
    setMinimumWidth(32);
    setToolTip(desc);
    setToolButtonStyle(Qt::ToolButtonIconOnly);
    setPopupMode(QToolButton::InstantPopup);
    setCursor(Qt::PointingHandCursor);

    action->setCheckable(toggle);

    connect(action, &QAction::enabledChanged, this, &SVGIcon::enabledChanged);
    connect(action, &QAction::triggered, this, &SVGIcon::clickedInternal);

    setDefaultAction(action);
    setActiveAppearance();
}

void SVGIcon::setInactiveAppearance()
{
    loadSvgFile(":/svg/" + objectName() + "_inactive.svg");
}

void SVGIcon::setActiveAppearance()
{
    if (defaultAction()->isCheckable())
    {
        loadSvgFile(":/svg/" + objectName() + "_active.svg");
    }
    else
    {
        loadSvgFile(":/svg/" + objectName() + ".svg");
    }
}

void SVGIcon::enabledChanged(bool state)
{
    if (defaultAction()->isCheckable())
    {
        if (state) setActiveAppearance();
        else       setInactiveAppearance();
    }
    else
    {
        setHidden(!state);
    }
}

void SVGIcon::clickedInternal()
{
    if (defaultAction()->isCheckable())
    {
        if (defaultAction()->isChecked()) setActiveAppearance();
        else                              setInactiveAppearance();
    }
}

void SVGIcon::paintEvent(QPaintEvent *)
{
    QPainter painter(this);

    QSvgRenderer svg(localData, this);

    svg.render(&painter);
}

void SVGIcon::loadSvgFile(const QString &path)
{
    fileCopy(path);
    update();
}

void SVGIcon::fileCopy(const QString &path)
{
    QFile file(path, this);

    if (file.open(QFile::ReadOnly))
    {
        auto data = file.readAll();

        QXmlStreamReader xml(data);

        while (!xml.atEnd())
        {
            xml.readNext();

            if (xml.hasError()) break;
        }

        if (xml.hasError())
        {
            qDebug() << tr("Invalid svg image (xml parse error)");
        }
        else
        {
            localData = data;
        }
    }
    else
    {
        qDebug() << tr("Unable to read file: ") + path;
    }

    file.close();
}