diff --git a/customshadoweffect.cpp b/customshadoweffect.cpp
deleted file mode 100644
index d2994e1..0000000
--- a/customshadoweffect.cpp
+++ /dev/null
@@ -1,76 +0,0 @@
-#include "customshadoweffect.h"
-#include <QPainter>
-
-CustomShadowEffect::CustomShadowEffect(QObject *parent)
-    : QGraphicsEffect(parent),
-      _distance(4.0),
-      _blurRadius(10.0),
-      _color(0, 0, 0, 80)
-{
-}
-
-QT_BEGIN_NAMESPACE
-  extern Q_WIDGETS_EXPORT void qt_blurImage(QPainter *p, QImage &blurImage, qreal radius, bool quality, bool alphaOnly, int transposed = 0);
-QT_END_NAMESPACE
-
-void CustomShadowEffect::draw(QPainter* painter)
-{
-    // if nothing to show outside the item, just draw source
-    if ((blurRadius() + distance()) <= 0) {
-        drawSource(painter);
-        return;
-    }
-
-    PixmapPadMode mode = QGraphicsEffect::PadToEffectiveBoundingRect;
-    QPoint offset;
-    const QPixmap px = sourcePixmap(Qt::DeviceCoordinates, &offset, mode);
-
-    // return if no source
-    if (px.isNull())
-        return;
-
-    // save world transform
-    QTransform restoreTransform = painter->worldTransform();
-    painter->setWorldTransform(QTransform());
-
-    // Calculate size for the background image
-    QSize szi(px.size().width() + 2 * distance(), px.size().height() + 2 * distance());
-
-    QImage tmp(szi, QImage::Format_ARGB32_Premultiplied);
-    QPixmap scaled = px.scaled(szi);
-    tmp.fill(0);
-    QPainter tmpPainter(&tmp);
-    tmpPainter.setCompositionMode(QPainter::CompositionMode_Source);
-    tmpPainter.drawPixmap(QPointF(-distance(), -distance()), scaled);
-    tmpPainter.end();
-
-    // blur the alpha channel
-    QImage blurred(tmp.size(), QImage::Format_ARGB32_Premultiplied);
-    blurred.fill(0);
-    QPainter blurPainter(&blurred);
-    qt_blurImage(&blurPainter, tmp, blurRadius(), false, true);
-    blurPainter.end();
-
-    tmp = blurred;
-
-    // blacken the image...
-    tmpPainter.begin(&tmp);
-    tmpPainter.setCompositionMode(QPainter::CompositionMode_SourceIn);
-    tmpPainter.fillRect(tmp.rect(), color());
-    tmpPainter.end();
-
-    // draw the blurred shadow...
-    painter->drawImage(offset, tmp);
-
-    // draw the actual pixmap...
-    painter->drawPixmap(offset, px, QRectF());
-
-    // restore world transform
-    painter->setWorldTransform(restoreTransform);
-}
-
-QRectF CustomShadowEffect::boundingRectFor(const QRectF& rect) const
-{
-    const qreal delta = blurRadius() + distance();
-    return rect.united(rect.adjusted(-delta, -delta, delta, delta));
-}
diff --git a/customshadoweffect.h b/customshadoweffect.h
deleted file mode 100644
index 7a8825c..0000000
--- a/customshadoweffect.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * http://stackoverflow.com/questions/23718827/qt-shadow-around-window
- */
-#ifndef CUSTOMSHADOWEFFECT_H
-#define CUSTOMSHADOWEFFECT_H
-
-#include <QGraphicsEffect>
-
-class CustomShadowEffect : public QGraphicsEffect
-{
-    Q_OBJECT
-public:
-    explicit CustomShadowEffect(QObject *parent = 0);
-
-    void draw(QPainter *painter);
-    QRectF boundingRectFor(const QRectF &rect) const;
-
-    inline void setDistance(qreal distance) { _distance = distance; updateBoundingRect(); }
-    inline qreal distance() const { return _distance; }
-
-    inline void setBlurRadius(qreal blurRadius) { _blurRadius = blurRadius; updateBoundingRect(); }
-    inline qreal blurRadius() const { return _blurRadius; }
-
-    inline void setColor(const QColor &color) { _color = color; }
-    inline QColor color() const { return _color; }
-
-private:
-    qreal  _distance;
-    qreal  _blurRadius;
-    QColor _color;
-};
-
-#endif // CUSTOMSHADOWEFFECT_H