What's this mod about?

This is a Mod included in SignPicture and is a premised library group that can easily create a moving GUI.

With easing, change of value at any time, animation framework, you can animate the GUI with very little effort.
Due to the relative coordinate specification, it is not necessary to calculate difficult coordinates.
It is designed to be easy to extend and you can create your own defined components.

Documentation

import javax.annotation.Nonnull;

import net.teamfruit.bnnwidget.WBase;
import net.teamfruit.bnnwidget.WEvent;
import net.teamfruit.bnnwidget.WFrame;
import net.teamfruit.bnnwidget.WPanel;
import net.teamfruit.bnnwidget.WRenderer;
import net.teamfruit.bnnwidget.motion.Easings;
import net.teamfruit.bnnwidget.position.Area;
import net.teamfruit.bnnwidget.position.Point;
import net.teamfruit.bnnwidget.position.R;
import net.teamfruit.bnnwidget.render.OpenGL;
import net.teamfruit.bnnwidget.var.V;
import net.teamfruit.bnnwidget.var.VMotion;

// your main gui extends "WFrame"
public class MyGui extends WFrame {
	// init widgets in "initWidget"
	@Override
	protected void initWidget() {
		// add your panel extends "WPanel"
		add(new WPanel(new R()) {
			@Override
			protected void initWidget() {
				// "R" is a class that relatively expresses an area.
				add(new WBase(new R()) {
					// "VMotion" is a constantly changing value depending on the specified animation.
					VMotion m = V.pm(0);

					@Override
					public void draw(final @Nonnull WEvent ev, final @Nonnull Area pgp, final @Nonnull Point p, final float frame, final float opacity) {
						// Let's prepare before rendering with "WRenderer.startShape()"
						WRenderer.startShape();
						// BnnWidget provides a GL wrapper that absorbs differences in Minecraft versions.
						// The value of the "V" class is retrieved by get () every time.
						OpenGL.glColor4f(0f, 0f, 0f, this.m.get());
						// "WGui" has drawing methods that can be specified in detail with a float value.
						draw(getGuiPosition(pgp));
					}

					private boolean mouseinside;

					@Override
					public void update(final @Nonnull WEvent ev, final @Nonnull Area pgp, final @Nonnull Point p) {
						// The area of the parent widget becomes get Area of the child widget by getGuiPosition.
						final Area a = getGuiPosition(pgp);
						// PointInside determines if the cursor is over the widget
						if (a.pointInside(p)) {
							if (!this.mouseinside) {
								this.mouseinside = true;
								// Add animation and start it. Release the queue with stop.
								this.m.stop().add(Easings.easeLinear.move(.2f, 0f)).start();
							}
						} else if (this.mouseinside) {
							this.mouseinside = false;
							this.m.stop().add(Easings.easeLinear.move(.2f, .5f)).start();
						}
						super.update(ev, pgp, p);
					}

					// It is called when the GUI is closed. If you want to add closing animation, return false and let's wait.
					@Override
					public boolean onCloseRequest() {
						this.m.stop().add(Easings.easeLinear.move(.25f, 0f)).start();
						return false;
					}

					// The GUI will not exit until it returns true. Let's see if the animation has ended with isFinished.
					@Override
					public boolean onClosing(final @Nonnull WEvent ev, final @Nonnull Area pgp, final @Nonnull Point mouse) {
						return this.m.isFinished();
					}
				});
			}
		});
	}
}

FAQ

I have a bug to report/suggestion to make!

If you find a bug or have an idea to improve this mod, contribute to the issue list!

I want BnnWidget in my mod pack!

Of Course!, BnnWidget, being under the MIT License. Feel free to redistribute it! My only request is to provide a link to either this thread or the mod's website.

I want to contribute!

If you feel like doing some modding, the source code of this mod is freely available here. Feel free to improve it by adding new features or fixing bugs!

Special Thanks

to Kamesuta for creating the mod,
to Notch et al for Minecraft,
Lex et al for MinecraftForge,
all contributors,
And of course to every minecrafter who took the time to report bugs and/or leave supporting comments!