Drag and drop to open files

VTX-Molecular-Visualization · Oct 28, 2024 · e981d68 · e981d68
1 parent ab6e79b
commit e981d68
Show file tree

Hide file tree

Showing 4 changed files with 48 additions and 2 deletions.
diff --git a/lib/ui/qt/include/ui/qt/widget/main_window.hpp b/lib/ui/qt/include/ui/qt/widget/main_window.hpp
@@ -34,8 +34,8 @@ namespace VTX::UI::QT::Widget
 
 		inline void setClosing( const bool p_closing ) { _closing = p_closing; }
 
-		void changeEvent( QEvent * const p_event ) override;
-		void closeEvent( QCloseEvent * p_event ) override;
+		void changeEvent( QEvent * ) override;
+		void closeEvent( QCloseEvent * ) override;
 
 		template<typename M>
 		M * const createMenu()
@@ -80,6 +80,10 @@ namespace VTX::UI::QT::Widget
 		void save() override;
 		void restore() override;
 
+	  protected:
+		void dragEnterEvent( QDragEnterEvent * );
+		void dropEvent( QDropEvent * );
+
 	  private:
 		QPointer<OpenGLWidget>	   _openGLWidget;
 		QPointer<StatusBar>		   _statusBar;

diff --git a/lib/ui/qt/include/ui/qt/widget/opengl_widget.hpp b/lib/ui/qt/include/ui/qt/widget/opengl_widget.hpp
@@ -30,6 +30,9 @@ namespace VTX::UI::QT::Widget
 		void setVSync( const bool );
 		bool isVSync() const { return _context->format().swapInterval() == 1; }
 
+	  protected:
+		bool eventFilter( QObject *, QEvent * ) override;
+
 	  private:
 		QPointer<QOpenGLContext>		   _context;
 		QPointer<Window::EventCatchWindow> _window;

diff --git a/lib/ui/qt/src/ui/qt/widget/main_window.cpp b/lib/ui/qt/src/ui/qt/widget/main_window.cpp
@@ -17,7 +17,9 @@
 #include "ui/qt/tool_bar/file.hpp"
 #include "ui/qt/tool_bar/snapshot.hpp"
 #include <QApplication>
+#include <QMimeData>
 #include <app/action/application.hpp>
+#include <app/action/scene.hpp>
 
 namespace VTX::UI::QT::Widget
 {
@@ -35,6 +37,7 @@ namespace VTX::UI::QT::Widget
 		setDockOptions( ForceTabbedDocks );
 		setTabPosition( Qt::AllDockWidgetAreas, QTabWidget::North );
 		setToolButtonStyle( Qt::ToolButtonTextUnderIcon );
+		setAcceptDrops( true );
 
 		//  Features.
 		setTabShape( QTabWidget::Rounded );
@@ -184,6 +187,18 @@ namespace VTX::UI::QT::Widget
 		}
 	}
 
+	void MainWindow::dragEnterEvent( QDragEnterEvent * p_event ) { p_event->acceptProposedAction(); }
+
+	void MainWindow::dropEvent( QDropEvent * p_event )
+	{
+		for ( const auto & url : p_event->mimeData()->urls() )
+		{
+			App::ACTION_SYSTEM().execute<App::Action::Scene::LoadMolecule>( url.toLocalFile().toStdString() );
+		}
+
+		p_event->acceptProposedAction();
+	}
+
 	void MainWindow::save()
 	{
 		SETTINGS.setValue( "geometry", saveGeometry() );

diff --git a/lib/ui/qt/src/ui/qt/widget/opengl_widget.cpp b/lib/ui/qt/src/ui/qt/widget/opengl_widget.cpp
@@ -1,11 +1,14 @@
 #include "ui/qt/widget/opengl_widget.hpp"
+#include "ui/qt/application.hpp"
 #include <app/action/application.hpp>
 
 namespace VTX::UI::QT::Widget
 {
 
 	OpenGLWidget::OpenGLWidget( QWidget * p_parent ) : BaseWidget( p_parent )
 	{
+		setAcceptDrops( true );
+
 		// Create surface.
 		QSurfaceFormat format;
 		format.setVersion( 4, 5 );
@@ -34,6 +37,8 @@ namespace VTX::UI::QT::Widget
 
 		// Use a widget container to embed the window.
 		_container = createWindowContainer( _window, this );
+		//_container->setAcceptDrops( true );
+		_container->installEventFilter( this );
 
 		// Set context.
 		_context->makeCurrent( _window );
@@ -79,4 +84,23 @@ namespace VTX::UI::QT::Widget
 		}
 	}
 
+	bool OpenGLWidget::eventFilter( QObject * p_watched, QEvent * p_event )
+	{
+		if ( p_watched == _container )
+		{
+			auto * e = p_event->clone();
+			if ( p_event->type() == QEvent::DragEnter )
+			{
+				QCoreApplication::sendEvent( APP_QT::getMainWindow(), e );
+				return true;
+			}
+			else if ( p_event->type() == QEvent::Drop )
+			{
+				QCoreApplication::sendEvent( APP_QT::getMainWindow(), e );
+				return true;
+			}
+		}
+		return QWidget::eventFilter( p_watched, p_event );
+	}
+
 } // namespace VTX::UI::QT::Widget