ClickButtonWidget.java

package gregtech.api.gui.widgets;

import gregtech.api.gui.GuiTextures;
import gregtech.api.gui.IRenderContext;
import gregtech.api.gui.Widget;
import gregtech.api.gui.resources.SizedTextureArea;
import gregtech.api.gui.resources.TextureArea;
import gregtech.api.util.LocalisationUtils;
import gregtech.api.util.Position;
import gregtech.api.util.Size;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.FontRenderer;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.network.PacketBuffer;
import org.lwjgl.input.Mouse;

import java.util.function.Consumer;

public class ClickButtonWidget extends Widget {

    protected TextureArea buttonTexture = GuiTextures.VANILLA_BUTTON.getSubArea(0.0, 0.0, 1.0, 0.5);
    protected String displayText;
    protected int textColor = 0xFFFFFF;
    protected Consumer<ClickData> onPressCallback;

    public ClickButtonWidget(int xPosition, int yPosition, int width, int height, String displayText, Consumer<ClickData> onPressed) {
        super(new Position(xPosition, yPosition), new Size(width, height));
        this.displayText = displayText;
        this.onPressCallback = onPressed;
    }

    public ClickButtonWidget setButtonTexture(TextureArea buttonTexture) {
        this.buttonTexture = buttonTexture;
        return this;
    }

    public ClickButtonWidget setTextColor(int textColor) {
        this.textColor = textColor;
        return this;
    }

    @Override
    public void drawInBackground(int mouseX, int mouseY, IRenderContext context) {
        super.drawInBackground(mouseX, mouseY, context);
        Position position = getPosition();
        Size size = getSize();
        if (buttonTexture instanceof SizedTextureArea) {
            ((SizedTextureArea) buttonTexture).drawHorizontalCutSubArea(position.x, position.y, size.width, size.height, 0.0, 1.0);
        } else {
            buttonTexture.drawSubArea(position.x, position.y, size.width, size.height, 0.0, 0.0, 1.0, 1.0);
        }
        FontRenderer fontRenderer = Minecraft.getMinecraft().fontRenderer;
        String text = LocalisationUtils.format(displayText);
        fontRenderer.drawString(text,
            position.x + size.width / 2 - fontRenderer.getStringWidth(text) / 2,
            position.y + size.height / 2 - fontRenderer.FONT_HEIGHT / 2, textColor);
        GlStateManager.color(1.0f, 1.0f, 1.0f);
    }

    @Override
    public boolean mouseClicked(int mouseX, int mouseY, int button) {
        if (isMouseOverElement(mouseX, mouseY)) {
            triggerButton();
            return true;
        }
        return false;
    }

    protected void triggerButton() {
        ClickData clickData = new ClickData(Mouse.getEventButton(), isShiftDown(), isCtrlDown());
        writeClientAction(1, clickData::writeToBuf);
        playButtonClickSound();
    }

    @Override
    public void handleClientAction(int id, PacketBuffer buffer) {
        super.handleClientAction(id, buffer);
        if (id == 1) {
            ClickData clickData = ClickData.readFromBuf(buffer);
            onPressCallback.accept(clickData);
        }
    }
}