Component renderer¶
Some components offer a componentRenderer property. A component renderer is a small class that renders a base component externally — similar to skins or a resource pack.
The renderer receives the component and its current state (e.g. pressed, hovered, disabled). States are usually represented by an enum and can differ between components. For DLButton this would be ButtonState, covering all possible button states. You can render each state individually and are not limited to a single texture — you can draw textures, solid colors, text or even items.
A component renderer avoids creating a new subclass just to change rendering. Swap the skin instead of subclassing. For major changes, creating a subclass might still be necessary.
Every component renderer implements IStateRenderer with the appropriate enum type for the states.
Example of a simple button renderer:
public class CustomButtonRenderer implements IStateRenderer<ButtonState> {
public static final CustomButtonRenderer INSTANCE = new CustomButtonRenderer();
private CustomButtonRenderer() {
}
@Override
public void renderSprite(DLGuiGraphics graphics, int x, int y, int w, int h, DLGuiComponent component, ButtonState state) {
AbstractSprite sprite = switch (state) {
case SELECTED -> DefaultGuiTextures.VANILLA_BUTTON.getSprite("selected");
case DOWN -> DefaultGuiTextures.VANILLA_BUTTON.getSprite("down");
case DISABLED -> DefaultGuiTextures.VANILLA_BUTTON.getSprite("disabled");
case DOWN_SELECTED -> DefaultGuiTextures.VANILLA_BUTTON.getSprite("down_selected");
case DISABLED_SELECTED -> DefaultGuiTextures.VANILLA_BUTTON.getSprite("disabled_selected");
default -> DefaultGuiTextures.VANILLA_BUTTON.getSprite("normal");
};
sprite.render(graphics, x, y, w, h);
}
}