finished #4

mainwindow.cpp

@@ -7,21 +7,26 @@
 #include <QDebug>
 #include <QPixmap>
 #include <QGraphicsScene>
+#include <QClipboard>
 
 MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
     ui(new Ui::MainWindow)
 {
     ui->setupUi(this);
 
+    //enable drag&dropping
+    setAcceptDrops(true);
+
     //hide menubar for non-global applications
     ui->menuBar->hide();
 
-    //default variable values
-    isPixmapLoaded = false;
+    //Keyboard Shortcuts
+    ui->actionPaste->setShortcut(Qt::Key_V | Qt::CTRL);
 
     //context menu items
     ui->graphicsView->addAction(ui->actionOpen);
+    ui->graphicsView->addAction(ui->actionPaste);
     ui->graphicsView->addAction(ui->actionAbout);
     ui->graphicsView->addAction(ui->actionAbout_Qt);
 
@@ -35,15 +40,6 @@ MainWindow::~MainWindow()
     delete ui;
 }
 
-void MainWindow::resizeEvent(QResizeEvent *event)
-{
-    QMainWindow::resizeEvent(event);
-    if(isPixmapLoaded)
-    {
-        ui->graphicsView->resetScale();
-    }
-}
-
 void MainWindow::pickFile()
 {
     QString fileName = QFileDialog::getOpenFileName(this,
@@ -55,9 +51,10 @@ void MainWindow::pickFile()
 void MainWindow::openFile(QString fileName)
 {
     ui->graphicsView->loadFile(fileName);
-    isPixmapLoaded = true;
 }
 
+// Actions
+
 void MainWindow::on_actionOpen_triggered()
 {
     pickFile();
@@ -72,3 +69,8 @@ void MainWindow::on_actionAbout_triggered()
 {
     QMessageBox::about(ui->centralWidget, QString("About qView"), QString("qView pre-release %1 by jurplel").arg(VERSION));
 }
+
+void MainWindow::on_actionPaste_triggered()
+{
+    ui->graphicsView->loadMimeData(QApplication::clipboard()->mimeData());
+}

mainwindow.h

@@ -19,8 +19,8 @@ class MainWindow : public QMainWindow
 
     void openFile(QString fileName);
 
-protected:
-    void resizeEvent(QResizeEvent *event) override;
+    bool getIsPixmapLoaded() const;
+    void setIsPixmapLoaded(bool value);
 
 private slots:
     void on_actionOpen_triggered();
@@ -29,16 +29,15 @@ private slots:
 
     void on_actionAbout_triggered();
 
+    void on_actionPaste_triggered();
+
 private:
     Ui::MainWindow *ui;
 
     void pickFile();
 
     QGraphicsScene *scene;
     QPixmap loadedPixmap;
-
-    bool isPixmapLoaded;
-
 };
 
 #endif // MAINWINDOW_H

mainwindow.ui

@@ -118,7 +118,14 @@
     <addaction name="actionAbout"/>
     <addaction name="actionAbout_Qt"/>
    </widget>
+   <widget class="QMenu" name="menuEdit">
+    <property name="title">
+     <string>Edit</string>
+    </property>
+    <addaction name="actionPaste"/>
+   </widget>
    <addaction name="menuFile"/>
+   <addaction name="menuEdit"/>
    <addaction name="menuHelp"/>
   </widget>
   <action name="actionOpen">
@@ -136,6 +143,11 @@
     <string>About &amp;Qt</string>
    </property>
   </action>
+  <action name="actionPaste">
+   <property name="text">
+    <string>&amp;Paste</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <customwidgets>

qvgraphicsview.cpp

@@ -6,14 +6,47 @@
 QVGraphicsView::QVGraphicsView(QWidget *parent) : QGraphicsView(parent)
 {
     scaleFactor = 0.25;
+    isPixmapLoaded = false;
+}
+
+void QVGraphicsView::resizeEvent(QResizeEvent *event)
+{
+    QGraphicsView::resizeEvent(event);
+    if(isPixmapLoaded)
+    {
+        resetScale();
+    }
+}
+
+void QVGraphicsView::dropEvent(QDropEvent *event)
+{
+    loadMimeData(event->mimeData());
+}
+
+void QVGraphicsView::dragEnterEvent(QDragEnterEvent *event)
+{
+    if(event->mimeData()->hasUrls())
+    {
+        event->acceptProposedAction();
+    }
+}
+
+void QVGraphicsView::dragMoveEvent(QDragMoveEvent *event)
+{
+    event->acceptProposedAction();
+}
+
+void QVGraphicsView::dragLeaveEvent(QDragLeaveEvent *event)
+{
+    event->accept();
 }
 
 void QVGraphicsView::wheelEvent(QWheelEvent *event)
 {
     qDebug()<< QString("before scroll scale: ") << getCurrentScale();
     qDebug()<< QString("before matrix: ") << matrix();
 
-    int DeltaY = event->angleDelta().y();
+    const int DeltaY = event->angleDelta().y();
 
     if (getCurrentScale() <= 1.0)
     {
@@ -46,6 +79,24 @@ void QVGraphicsView::wheelEvent(QWheelEvent *event)
     qDebug() << QString("after scroll scale: ") << getCurrentScale();
 }
 
+void QVGraphicsView::loadMimeData(const QMimeData *mimeData)
+{
+    if (mimeData->hasUrls())
+    {
+        QStringList pathList;
+        QList<QUrl> urlList = mimeData->urls();
+
+        for (int i = 0; i < urlList.size() && i < 32; ++i)
+        {
+            pathList.append(urlList.at(i).toLocalFile());
+        }
+        if (!pathList.isEmpty())
+        {
+            loadFile(pathList.first());
+        }
+    }
+}
+
 void QVGraphicsView::loadFile(QString fileName)
 {
     if (fileName.isEmpty())
@@ -62,6 +113,7 @@ void QVGraphicsView::loadFile(QString fileName)
     loadedPixmapItem->setOffset((50000.0 - loadedPixmap.width()/2), (50000.0 - loadedPixmap.height()/2));
     resetScale();
     loadedPixmapItem->setTransformationMode(Qt::SmoothTransformation);
+    isPixmapLoaded = true;
 }
 
 void QVGraphicsView::resetScale()
@@ -72,7 +124,7 @@ void QVGraphicsView::resetScale()
 }
 
 
-// getters & setters
+// Getters & Setters
 
 QGraphicsPixmapItem *QVGraphicsView::getLoadedPixmapItem() const
 {

qvgraphicsview.h

@@ -2,6 +2,7 @@
 #define QVGRAPHICSVIEW_H
 
 #include <QGraphicsView>
+#include <QMimeData>
 
 class QVGraphicsView : public QGraphicsView
 {
@@ -13,6 +14,8 @@ class QVGraphicsView : public QGraphicsView
 
     void resetScale();
 
+    void loadMimeData(const QMimeData *mimeData);
+
     qreal getCurrentScale() const;
     void setCurrentScale(const qreal &value);
 
@@ -25,6 +28,16 @@ class QVGraphicsView : public QGraphicsView
 protected:
     virtual void wheelEvent(QWheelEvent *event);
 
+    void resizeEvent(QResizeEvent *event);
+
+    void dropEvent(QDropEvent *event) override;
+
+    void dragEnterEvent(QDragEnterEvent *event) override;
+
+    void dragMoveEvent(QDragMoveEvent *event) override;
+
+    void dragLeaveEvent(QDragLeaveEvent *event) override;
+
 private:
     qreal currentScale;
     qreal scaleFactor;
@@ -33,5 +46,7 @@ class QVGraphicsView : public QGraphicsView
     QGraphicsPixmapItem *loadedPixmapItem;
     QTransform fittedMatrix;
     QTransform scaledMatrix;
+
+    bool isPixmapLoaded;
 };
 #endif // QVGRAPHICSVIEW_H