:gif:

bottombuttongroup.cpp

@@ -21,6 +21,7 @@ BottomButtonGroup::BottomButtonGroup(QWidget *parent)
                         "QPushButton {"
                         "background-color:rgba(225,255,255,0);"
                         "color: white;"
+                        "border-style: none;"
                         "}");
 
     auto newBtn = [](QString text) -> QPushButton * {

graphicsscene.cpp

@@ -6,6 +6,8 @@
 #include <QGraphicsItem>
 #include <QUrl>
 #include <QGraphicsSvgItem>
+#include <QMovie>
+#include <QLabel>
 
 GraphicsScene::GraphicsScene(QObject *parent)
     : QGraphicsScene(parent)
@@ -42,3 +44,16 @@ void GraphicsScene::showSvg(const QString &filepath)
     m_theThing = svgItem;
     this->setSceneRect(m_theThing->boundingRect());
 }
+
+void GraphicsScene::showGif(const QString &filepath)
+{
+    this->clear();
+    QMovie * movie = new QMovie(filepath);
+    QLabel * label = new QLabel;
+    label->setStyleSheet("background-color:white;");
+    label->setMovie(movie);
+    this->addWidget(label);
+    movie->start();
+    m_theThing = this->addRect(QRect(QPoint(0, 0), movie->scaledSize()));
+    this->setSceneRect(m_theThing->boundingRect());
+}

graphicsscene.h

@@ -13,6 +13,7 @@ public:
     void showImage(const QPixmap &pixmap);
     void showText(const QString &text);
     void showSvg(const QString &filepath);
+    void showGif(const QString &filepath);
 
 private:
     QGraphicsItem * m_theThing;

graphicsview.cpp

@@ -40,6 +40,11 @@ void GraphicsView::showSvg(const QString &filepath)
     scene()->showSvg(filepath);
 }
 
+void GraphicsView::showGif(const QString &filepath)
+{
+    scene()->showGif(filepath);
+}
+
 GraphicsScene *GraphicsView::scene() const
 {
     return qobject_cast<GraphicsScene*>(QGraphicsView::scene());
@@ -138,6 +143,8 @@ void GraphicsView::dropEvent(QDropEvent *event)
 
         if (filePath.endsWith(".svg")) {
             showSvg(filePath);
+        } else if (filePath.endsWith(".gif")) {
+            showGif(filePath);
         } else {
             QImageReader imageReader(filePath);
             QImage::Format imageFormat = imageReader.imageFormat();

graphicsview.h

@@ -12,6 +12,7 @@ public:
     void showImage(const QPixmap &pixmap);
     void showText(const QString &text);
     void showSvg(const QString &filepath);
+    void showGif(const QString &filepath);
 
     GraphicsScene * scene() const;
     void setScene(GraphicsScene *scene);