HG_REPOSITORIES/LPP/SciQLOP_Repos/SciQLop Files · gui/include/DragDropHelper.h

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             DragDropHelper.h
        
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      #ifndef SCIQLOP_DRAGDROPHELPER_H

      #define SCIQLOP_DRAGDROPHELPER_H

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      #include <Common/spimpl.h>

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      #include <QLoggingCategory>

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      #include <QWidget>

      class QVBoxLayout;

      class QScrollArea;

      class VisualizationDragWidget;

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      class VisualizationDragDropContainer;

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      class QMimeData;

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      Q_DECLARE_LOGGING_CATEGORY(LOG_DragDropHelper)

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      /**

       * @brief Helper class for drag&drop operations.

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       * @note The helper is accessible from the sqpApp singleton and  has the same life as the whole

       * application (like a controller). But contrary to a controller, it doesn't live in a thread and

       * can interect with the gui.

       * @see SqpApplication

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       */

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      class DragDropHelper {

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      public:

          static const QString MIME_TYPE_GRAPH;

          static const QString MIME_TYPE_ZONE;

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          DragDropHelper();

          virtual ~DragDropHelper();

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          /// Resets some internal variables. Must be called before any new drag&drop operation.

          void resetDragAndDrop();

          /// Sets the visualization widget currently being drag on the visualization.

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          void setCurrentDragWidget(VisualizationDragWidget *dragWidget);

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          /// Returns the visualization widget currently being drag on the visualization.

          /// Can be null if a new visualization widget is intended to be created by the drag&drop

          /// operation.

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          VisualizationDragWidget *getCurrentDragWidget() const;

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          QWidget &placeHolder() const;

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          void insertPlaceHolder(QVBoxLayout *layout, int index);

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          void removePlaceHolder();

          bool isPlaceHolderSet() const;

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          /// Checks if the specified mime data is valid for a drop in the visualization

          bool checkMimeDataForVisualization(const QMimeData *mimeData,

                                             VisualizationDragDropContainer *dropContainer);

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          void addDragDropScrollArea(QScrollArea *scrollArea);

          void removeDragDropScrollArea(QScrollArea *scrollArea);

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          QUrl imageTemporaryUrl(const QImage &image) const;

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      private:

          class DragDropHelperPrivate;

          spimpl::unique_impl_ptr<DragDropHelperPrivate> impl;

      };

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      /**

       * @brief Event filter class which manage the scroll of QScrollArea during a drag&drop operation.

       * @note A QScrollArea inside an other QScrollArea is not fully supported.

       */

      class DragDropScroller : public QObject {

          Q_OBJECT

      public:

          DragDropScroller(QObject *parent = nullptr);

          void addScrollArea(QScrollArea *scrollArea);

          void removeScrollArea(QScrollArea *scrollArea);

      protected:

          bool eventFilter(QObject *obj, QEvent *event);

      private:

          class DragDropScrollerPrivate;

          spimpl::unique_impl_ptr<DragDropScrollerPrivate> impl;

      private slots:

          void onTimer();

      };

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      #endif // SCIQLOP_DRAGDROPHELPER_H

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trabillard Format changes	r844	#ifndef SCIQLOP_DRAGDROPHELPER_H
		#define SCIQLOP_DRAGDROPHELPER_H
trabillard New helper class for the drag&drop	r837
		#include <Common/spimpl.h>
trabillard drop of variables in the visualization	r850	#include <QLoggingCategory>
trabillard New helper class for the drag&drop	r837	#include <QWidget>

		class QVBoxLayout;
		class QScrollArea;
		class VisualizationDragWidget;
trabillard drop of variables in the visualization	r850	class VisualizationDragDropContainer;
trabillard New helper class for the drag&drop	r837	class QMimeData;

trabillard drop of variables in the visualization	r850	Q_DECLARE_LOGGING_CATEGORY(LOG_DragDropHelper)
trabillard Manage the scroll of the tab QScrollArea during a drag&drop operation	r840
trabillard New helper class for the drag&drop	r837	/**
		* @brief Helper class for drag&drop operations.
trabillard drop of variables in the visualization	r850	* @note The helper is accessible from the sqpApp singleton and has the same life as the whole
		* application (like a controller). But contrary to a controller, it doesn't live in a thread and
		* can interect with the gui.
		* @see SqpApplication
trabillard New helper class for the drag&drop	r837	*/
trabillard Format changes	r844	class DragDropHelper {
trabillard New helper class for the drag&drop	r837	public:
		static const QString MIME_TYPE_GRAPH;
		static const QString MIME_TYPE_ZONE;

trabillard Format changes	r844	DragDropHelper();
		virtual ~DragDropHelper();

trabillard drop of variables in the visualization	r850	/// Resets some internal variables. Must be called before any new drag&drop operation.
		void resetDragAndDrop();

		/// Sets the visualization widget currently being drag on the visualization.
trabillard Format changes	r844	void setCurrentDragWidget(VisualizationDragWidget *dragWidget);
trabillard drop of variables in the visualization	r850
		/// Returns the visualization widget currently being drag on the visualization.
		/// Can be null if a new visualization widget is intended to be created by the drag&drop
		/// operation.
trabillard Format changes	r844	VisualizationDragWidget *getCurrentDragWidget() const;
trabillard New helper class for the drag&drop	r837
		QWidget &placeHolder() const;
trabillard Format changes	r844	void insertPlaceHolder(QVBoxLayout *layout, int index);
trabillard New helper class for the drag&drop	r837	void removePlaceHolder();
		bool isPlaceHolderSet() const;

trabillard drop of variables in the visualization	r850	/// Checks if the specified mime data is valid for a drop in the visualization
		bool checkMimeDataForVisualization(const QMimeData *mimeData,
		VisualizationDragDropContainer *dropContainer);

trabillard Format changes	r844	void addDragDropScrollArea(QScrollArea *scrollArea);
		void removeDragDropScrollArea(QScrollArea *scrollArea);
trabillard New helper class for the drag&drop	r837
trabillard Format changes	r844	QUrl imageTemporaryUrl(const QImage &image) const;
trabillard New helper class for the drag&drop	r837
		private:
		class DragDropHelperPrivate;
		spimpl::unique_impl_ptr<DragDropHelperPrivate> impl;
		};

trabillard drop of variables in the visualization	r850	/**
		* @brief Event filter class which manage the scroll of QScrollArea during a drag&drop operation.
		* @note A QScrollArea inside an other QScrollArea is not fully supported.
		*/
		class DragDropScroller : public QObject {
		Q_OBJECT

		public:
		DragDropScroller(QObject *parent = nullptr);

		void addScrollArea(QScrollArea *scrollArea);
		void removeScrollArea(QScrollArea *scrollArea);

		protected:
		bool eventFilter(QObject obj, QEvent event);

		private:
		class DragDropScrollerPrivate;
		spimpl::unique_impl_ptr<DragDropScrollerPrivate> impl;

		private slots:
		void onTimer();
		};

trabillard Format changes	r844	#endif // SCIQLOP_DRAGDROPHELPER_H