helper.cpp


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#include <QPainter>
#include <QAction>
#include <QLabel>
#include <QApplication>

#include <taglib/fileref.h>
#include <taglib/audioproperties.h>

#include "helper.h"

namespace Helper {
    QIcon iconFromQChar(const QChar &c, int pixelSize){
        QImage img(32, 32, QImage::Format_ARGB32);
        img.fill(QColor(0, 0, 0, 0));
        QPainter p(&img);
        p.setRenderHint(QPainter::Antialiasing);
        p.setRenderHint(QPainter::TextAntialiasing);
        p.setRenderHint(QPainter::SmoothPixmapTransform);
        p.setPen(qApp->palette().color(QPalette::Text));
        QFont f(qApp->font());
        f.setPixelSize(pixelSize);
        f.setBold(true);
        p.setFont(f);
        p.drawText(img.rect(), Qt::AlignCenter, c);
        return QIcon(QPixmap::fromImage(img));
    }

    QAction* createSeparator(QObject *parent){
        QAction *a = new QAction(parent);
        a->setSeparator(true);
        return a;
    }

    quint64 lengthInSeconds(const QString &file){
        TagLib::FileRef f(QString(file).toUtf8());
        if(f.isNull()){
            return 0;
        }
        TagLib::AudioProperties *props = f.audioProperties();
        return props->lengthInSeconds();
    }

    QColor colorFromLabel(QLabel *l){
        QColor retval;
        const QPixmap *pm = l->pixmap();
        if(pm){
            QImage img = pm->toImage();
            retval = img.pixelColor(0, 0);
        }
        return retval;
    }

    void fillLabel(QLabel *l, QColor c){
        QPixmap newPm(l->sizeHint());
        newPm.fill(c);
        l->setPixmap(newPm);
    }
}