Add dnd support

Author: gonwan

src/mainwindow.cpp

@@ -29,6 +29,8 @@
 #include <QDesktopServices>
 #include <QDialog>
 #include <QDir>
+#include <QDragEnterEvent>
+#include <QDropEvent>
 #include <QEvent>
 #include <QFile>
 #include <QFileDialog>
@@ -41,6 +43,7 @@
 #include <QMenu>
 #include <QMenuBar>
 #include <QMessageBox>
+#include <QMimeData>
 #include <QObject>
 #include <QPixmap>
 #include <QPrinter>
@@ -104,6 +107,8 @@ MainWindow::MainWindow( const QStringList& arguments )
 	// UIC stuff
 	setupUi( this );
 
+	setAcceptDrops( true );
+
 	// Set up layout direction
 	if ( pConfig->m_advLayoutDirectionRL )
 		qApp->setLayoutDirection( Qt::RightToLeft );
@@ -608,6 +613,45 @@ void MainWindow::closeEvent( QCloseEvent* e )
 	QMainWindow::closeEvent( e );
 }
 
+void MainWindow::dragEnterEvent( QDragEnterEvent* e )
+{
+	if ( e->mimeData()->hasUrls() )
+	{
+		QUrl url = e->mimeData()->urls().first();
+
+		if ( url.isLocalFile() )
+		{
+			QString fileName = url.toLocalFile();
+
+			if ( fileName.endsWith( ".chm", Qt::CaseInsensitive ) || fileName.endsWith( ".epub", Qt::CaseInsensitive ) )
+			{
+				e->acceptProposedAction();
+				return;
+			}
+		}
+	}
+
+	e->ignore();
+}
+
+void MainWindow::dropEvent( QDropEvent* e )
+{
+	if ( e->mimeData()->hasUrls() )
+	{
+		QUrl url = e->mimeData()->urls().first();
+
+		if ( url.isLocalFile() )
+		{
+			QString fileName = url.toLocalFile();
+
+			if ( fileName.endsWith( ".chm", Qt::CaseInsensitive ) || fileName.endsWith( ".epub", Qt::CaseInsensitive ) )
+				loadFile( fileName );
+		}
+
+		e->acceptProposedAction();
+	}
+}
+
 void MainWindow::printHelpAndExit()
 {
 	fprintf( stderr, "Usage: %s [options] [helpfile]\n"

src/mainwindow.h

@@ -172,6 +172,8 @@ class MainWindow : public QMainWindow, public Ui::MainWindow
 	protected:
 		// Reimplemented functions
 		void        closeEvent( QCloseEvent* e );
+		void        dragEnterEvent( QDragEnterEvent* e );
+		void        dropEvent( QDropEvent* e );
 		bool        event( QEvent* e );
 
 	private:

src/viewwindowmgr.cpp

@@ -160,6 +160,7 @@ ViewWindow* ViewWindowMgr::current()
 ViewWindow* ViewWindowMgr::addNewTab( bool set_active )
 {
 	ViewWindow* browser = new ViewWindow( m_tabWidget );
+	browser->setAcceptDrops( false );
 
 	editFind->installEventFilter( this );