/*
    TikZiT - a GUI diagram editor for TikZ
    Copyright (C) 2018 Aleks Kissinger

    This program 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.

    This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
*/

#include "nodestyle.h"
#include "tikzit.h"

#include <QPainter>

NodeStyle *noneStyle = new NodeStyle();

NodeStyle::NodeStyle() : Style()
{
}


NodeStyle::NodeStyle(QString name, GraphElementData *data): Style(name, data)
{
}

QColor NodeStyle::fillColor(bool tikzitOverride) const
{
    if (_data == 0) return Qt::white;

    QString col = propertyWithDefault("fill", "white", tikzitOverride);
    return tikzit->colorByName(col);
}

QBrush NodeStyle::brush() const
{
    return QBrush(fillColor());
}

QString NodeStyle::shape(bool tikzitOverride) const
{
    return propertyWithDefault("shape", "circle", tikzitOverride);
}

QPainterPath NodeStyle::path() const
{
    QPainterPath pth;
    QString sh = shape();

    if (sh == "rectangle") {
        pth.addRect(-30.0f, -30.0f, 60.0f, 60.0f);
    } else { // default is 'circle'
        pth.addEllipse(QPointF(0.0f,0.0f), 30.0f, 30.0f);
    }
    return pth;
}

QPainterPath NodeStyle::palettePath() const
{
    return path();
}

QIcon NodeStyle::icon() const
{
    // draw an icon matching the style
    QPixmap px(100,100);
    px.fill(Qt::transparent);
    QPainter painter(&px);
    QPainterPath pth = path();
    pth.translate(50.0f, 50.0f);

    if (_data == 0) {
        QColor c(180,180,200);
        painter.setPen(QPen(c));
        painter.setBrush(QBrush(c));
        painter.drawEllipse(QPointF(50.0f,50.0f), 3,3);

        QPen pen(QColor(180,180,220));
        pen.setWidth(3);
        QVector<qreal> p;
        p << 2.0 << 2.0;
        pen.setDashPattern(p);
        painter.setPen(pen);
        painter.setBrush(Qt::NoBrush);
        painter.drawPath(pth);
    } else {
        painter.setPen(pen());
        painter.setBrush(brush());
        painter.drawPath(pth);
    }


    return QIcon(px);
}