Decodes wiRedPanda drag-and-drop payloads (new element from the palette, and clone-drag of an existing selection) and commits them to the owning Scene. More...

#include <SceneDropHandler.h>

Public Member Functions
void	addFromMimeData (QMimeData *mimeData, std::optional< QPointF > scenePos=std::nullopt)
void	handleCloneDrag (QGraphicsSceneDragDropEvent *event)
	Re-instantiates a clone-dragged selection at the drop position.
void	handleNewElementDrop (QGraphicsSceneDragDropEvent *event)
	Builds a new element from a palette drag payload and adds it under the cursor.
	SceneDropHandler (Scene *scene)

Static Public Member Functions
static bool	isSupportedDropFormat (const QMimeData *mimeData)
	Returns `true` if mimeData carries any recognised wiRedPanda drop format.

Detailed Description

Decodes wiRedPanda drag-and-drop payloads (new element from the palette, and clone-drag of an existing selection) and commits them to the owning Scene.

Extracted from Scene, following the ConnectionManager pattern: it holds a back-reference to the Scene and delegates element creation, undo commands, and scene resizing back to it. Scene keeps the QGraphicsScene drag/drop event overrides and forwards the payload handling here.

Definition at line 28 of file SceneDropHandler.h.

Constructor & Destructor Documentation

◆ SceneDropHandler()

SceneDropHandler::SceneDropHandler ( Scene * scene )

explicit

Definition at line 25 of file SceneDropHandler.cpp.

Member Function Documentation

◆ addFromMimeData()

void SceneDropHandler::addFromMimeData	(	QMimeData *	mimeData,
		std::optional< QPointF >	scenePos = std::nullopt )

Adds a new element from mimeData (palette add-without-drag path); takes ownership of mimeData. If scenePos is set, the element is placed there (snapped to the grid by the scene); otherwise it keeps its default position.

Definition at line 125 of file SceneDropHandler.cpp.

References IC::blobName(), ElementFactory::buildElement(), MimeType::DragDrop, MimeType::DragDropLegacy, qCDebug, readDragDropPayload(), and Serialization::readPandaHeader().