Draw ImGui in a Java Swing Panel.

This works better than expected but is not perfect. I don't know if it will ever become better. I get around 30FPS on my PC with the example window.

• Clip rects
• Mouse Support (mouse position, mouse buttons, mouse wheel)
• Keyboard Support (char input, key down, key up)
• Mouse cursors
• Textures

To use imgui-swing, you need to create a class which extends ImGuiPanel and overwrite the rendermethod.
Optionally you can overwrite the init method to initialize ImGui.

import net.lenni0451.imgui.swing.ImGuiPanel;

public class MyPanel extends ImGuiPanel {

    @Override
    protected void init() {
        //TODO: Add your ImGui initialization code here
    }

    @Override
    protected void render() {
        //TODO: Render your ImGui code here
    }

}

After creating your class, you can simply add it to any Swing component.

//For example the content pane of a JFrame
frame.setContentPane(new MyPanel());

If you just want to render the example window, you can just create a new instance of the ImGuiPanel class and add it to your component.

frame.setContentPane(new ImGuiPanel());

This is basically everything you need to do to render ImGui in a JFrame.

JFrame frame = new JFrame("Test");
frame.setSize(800, 600);
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
frame.setContentPane(new ImGuiPanel());
frame.setVisible(true);

imgui-swing supports textures using the TextureManager.
The textures have to be BufferedImages.
To load a new texture and get the texture id, you can call the TextureManager.create(image) method.

BufferedImage image = ...;
int textureId = TextureManager.create(image);

dependencies {
    implementation "net.lenni0451:imgui-swing:x.x.x"
}