chore: adjusted the project directory structure

app/graphicsscene.cpp

@@ -0,0 +1,84 @@
+#include "graphicsscene.h"
+
+#include <QGraphicsSceneMouseEvent>
+#include <QMimeData>
+#include <QDebug>
+#include <QGraphicsItem>
+#include <QUrl>
+#include <QGraphicsSvgItem>
+#include <QMovie>
+#include <QLabel>
+#include <QPainter>
+
+GraphicsScene::GraphicsScene(QObject *parent)
+    : QGraphicsScene(parent)
+{
+    showText(tr("Drag image here"));
+}
+
+GraphicsScene::~GraphicsScene()
+{
+
+}
+
+void GraphicsScene::showImage(const QPixmap &pixmap)
+{
+    this->clear();
+    QGraphicsPixmapItem * pixmapItem = this->addPixmap(pixmap);
+    pixmapItem->setShapeMode(QGraphicsPixmapItem::BoundingRectShape);
+    m_theThing = pixmapItem;
+    this->setSceneRect(m_theThing->boundingRect());
+}
+
+void GraphicsScene::showText(const QString &text)
+{
+    this->clear();
+    QGraphicsTextItem * textItem = this->addText(text);
+    textItem->setDefaultTextColor(QColor("White"));
+    m_theThing = textItem;
+    this->setSceneRect(m_theThing->boundingRect());
+}
+
+void GraphicsScene::showSvg(const QString &filepath)
+{
+    this->clear();
+    QGraphicsSvgItem * svgItem = new QGraphicsSvgItem(filepath);
+    this->addItem(svgItem);
+    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:rgba(225,255,255,0);");
+    label->setMovie(movie);
+    this->addWidget(label);
+    movie->start();
+    m_theThing = this->addRect(QRect(QPoint(0, 0), label->sizeHint()),
+                               QPen(Qt::transparent));
+    this->setSceneRect(m_theThing->boundingRect());
+}
+
+bool GraphicsScene::trySetTransformationMode(Qt::TransformationMode mode)
+{
+    QGraphicsPixmapItem * pixmapItem = qgraphicsitem_cast<QGraphicsPixmapItem *>(m_theThing);
+    if (pixmapItem) {
+        pixmapItem->setTransformationMode(mode);
+        return true;
+    }
+
+    return false;
+}
+
+QPixmap GraphicsScene::renderToPixmap()
+{
+    QPixmap pixmap(sceneRect().toRect().size());
+    pixmap.fill(Qt::transparent);
+    QPainter p(&pixmap);
+    render(&p, sceneRect());
+
+    return pixmap;
+}