Clipboard.h File Reference

Node-graph clipboard: copy/paste selected nodes via ImGui system clipboard. More...

#include <string>
#include <vector>
#include "BTNodeGraphManager.h"

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Classes
class	Olympe::NodeGraphClipboard
	Singleton clipboard for node-graph copy / paste operations. More...

Namespaces
namespace	Olympe
	< Provides AssetID and INVALID_ASSET_ID

Detailed Description

Node-graph clipboard: copy/paste selected nodes via ImGui system clipboard.

Author

Olympe Engine

Date

2026-02-24

NodeGraphClipboard serialises selected nodes (including their type, sub-type, parameters and relative positions) to a compact JSON string stored in the system clipboard via ImGui::SetClipboardText / ImGui::GetClipboardText.

The JSON payload is prefixed with the marker OLYMPE_NG_CLIP: so that foreign clipboard contents are silently ignored on paste.

Multi-node copy is supported: all currently selected nodes are written. On paste the nodes are positioned relative to the current mouse cursor position, preserving their layout offsets.

Design notes

• The class is a singleton for convenience; each editor window uses the same shared clipboard.
• No heap allocations are kept between Copy() and Paste() calls; the JSON is stored solely in the system clipboard string.
• C++14 compliant - no C++17/20 features.

Definition in file Clipboard.h.