Custom C++ Nodes

Extend Morph by creating custom C++ node types that inherit from MorphNode.

Creating a Custom Node

Place .h files in your project and reference them in morph.config.json:

{
  "cpp_sources": ["cpp/my_widget.h"]
}

Then implement your node:

#include "core/node.h"

class MyWidget : public MorphNode {
public:
    void recordDisplayList(Renderer& r) override {
        DrawOp op;
        op.setRounded(x, y, w, h, 8.0f, style.bgColor);
        m_displayList.push_back(op);
    }
};

MorphNode API

Key methods to override:

Method	Description
`recordDisplayList(Renderer& r)`	Record draw operations for rendering
`layout(float parentW, float parentH)`	Compute position and size
`contentWidth()`	Return intrinsic width for flex sizing

Key Files

File	Description
`runtime/core/node.h`	`MorphNode` base class and `MorphStyle`
`runtime/core/render_frame.h`	Lock-free frame snapshot
`runtime/core/draw_op.h`	Display-list draw operations
`runtime/render/gl_renderer.h`	OpenGL batch renderer

See the C++ Integration help doc for the full runtime source map.