Olympe::NodeGraphClipboard Class Reference

Singleton clipboard for node-graph copy / paste operations. More...

#include <Clipboard.h>

Public Member Functions
void	CopySelectedNodes (NodeGraph *graph, int graphID)
	Serialise currently selected nodes to JSON and write to the system clipboard.
void	PasteNodes (NodeGraph *graph, int graphID, float mousePosX, float mousePosY, bool snapToGrid=false, float snapGridSize=16.0f)
	Read the system clipboard, deserialise nodes and create them in the active graph under the current mouse cursor.

Static Public Member Functions
static NodeGraphClipboard &	Get ()
	Returns the singleton instance.

Private Member Functions
	NodeGraphClipboard ()=default

Static Private Attributes
static const char *	k_ClipPrefix = "OLYMPE_NG_CLIP:"
	Prefix that marks Olympe node-graph clipboard payloads.

Detailed Description

Singleton clipboard for node-graph copy / paste operations.

Definition at line 41 of file Clipboard.h.

Constructor & Destructor Documentation

NodeGraphClipboard()

Olympe::NodeGraphClipboard::NodeGraphClipboard ( )

privatedefault

Member Function Documentation

CopySelectedNodes()

void Olympe::NodeGraphClipboard::CopySelectedNodes	(	NodeGraph *	graph,
		int	graphID
	)

Serialise currently selected nodes to JSON and write to the system clipboard.

Parameters

graph	Active NodeGraph (source of node data and selection).
graphID	Active graph ID (used to resolve ImNodes global UIDs).

If no nodes are selected the clipboard is left unchanged.

Definition at line 70 of file Clipboard.cpp.

References Olympe::CLIP_GRAPH_ID_MULTIPLIER, GetComponentTypeID_Static(), k_ClipPrefix, Olympe::NodeTypeToString(), Olympe::GraphNode::posX, and SYSTEM_LOG.

Referenced by Olympe::NodeGraphPanel::HandleKeyboardShortcuts().

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Get()

NodeGraphClipboard & Olympe::NodeGraphClipboard::Get ( )

static

Returns the singleton instance.

Definition at line 60 of file Clipboard.cpp.

Referenced by Olympe::NodeGraphPanel::HandleKeyboardShortcuts().

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PasteNodes()

void Olympe::NodeGraphClipboard::PasteNodes	(	NodeGraph *	graph,
		int	graphID,
		float	mousePosX,
		float	mousePosY,
		bool	snapToGrid = false,
		float	snapGridSize = 16.0f
	)

Read the system clipboard, deserialise nodes and create them in the active graph under the current mouse cursor.

Parameters

graph	Active NodeGraph (destination).
graphID	Active graph ID used to set ImNodes node positions via ImNodes::SetNodeGridSpacePos immediately after creation.
mousePosX	Paste anchor X in canvas (grid) space.
mousePosY	Paste anchor Y in canvas (grid) space.
snapToGrid	When true, each pasted node position is snapped to the nearest grid cell of size snapGridSize.
snapGridSize	Grid cell size used when snapToGrid is true.

If the clipboard does not contain a valid Olympe payload this is a no-op.

Definition at line 143 of file Clipboard.cpp.

References Olympe::CLIP_GRAPH_ID_MULTIPLIER, GetComponentTypeID_Static(), k_ClipPrefix, Olympe::StringToNodeType(), and SYSTEM_LOG.

Referenced by Olympe::NodeGraphPanel::HandleKeyboardShortcuts().

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Member Data Documentation

k_ClipPrefix

const char * Olympe::NodeGraphClipboard::k_ClipPrefix = "OLYMPE_NG_CLIP:"

staticprivate

Prefix that marks Olympe node-graph clipboard payloads.

Definition at line 80 of file Clipboard.h.

Referenced by CopySelectedNodes(), and PasteNodes().

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The documentation for this class was generated from the following files:

• Source/BlueprintEditor/Clipboard.h
• Source/BlueprintEditor/Clipboard.cpp