FalsePatternLib/src/main/java/com/falsepattern/lib/compat/GuiLabel.java

package com.falsepattern.lib.compat;

import com.google.common.collect.Lists;

import java.util.List;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.FontRenderer;
import net.minecraft.client.gui.Gui;
import net.minecraft.client.renderer.OpenGlHelper;
import net.minecraft.client.resources.I18n;
import org.lwjgl.opengl.GL11;

@SideOnly(Side.CLIENT)
public class GuiLabel extends Gui {
    protected int width;
    protected int height;
    public int x;
    public int y;
    private final List<String> labels;
    public int id;
    private boolean centered;
    public boolean visible = true;
    private final boolean labelBgEnabled;
    private final int textColor;
    private final int backColor;
    private final int ulColor;
    private final int brColor;
    private final FontRenderer fontRenderer;
    private final int border;

    public GuiLabel(FontRenderer fontRendererObj, int p_i45540_2_, int p_i45540_3_, int p_i45540_4_, int p_i45540_5_, int p_i45540_6_, int p_i45540_7_) {
        this.fontRenderer = fontRendererObj;
        this.id = p_i45540_2_;
        this.x = p_i45540_3_;
        this.y = p_i45540_4_;
        this.width = p_i45540_5_;
        this.height = p_i45540_6_;
        this.labels = Lists.newArrayList();
        this.centered = false;
        this.labelBgEnabled = false;
        this.textColor = p_i45540_7_;
        this.backColor = -1;
        this.ulColor = -1;
        this.brColor = -1;
        this.border = 0;
    }

    public void addLine(String p_175202_1_) {
        this.labels.add(I18n.format(p_175202_1_));
    }

    /**
     * Sets the Label to be centered
     */
    public GuiLabel setCentered() {
        this.centered = true;
        return this;
    }

    public void drawLabel(Minecraft mc, int mouseX, int mouseY) {
        if (this.visible) {
            GL11.glEnable(GL11.GL_BLEND);
            OpenGlHelper.glBlendFunc(770, 771, 1, 0);
            GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
            this.drawLabelBackground(mc, mouseX, mouseY);
            int i = this.y + this.height / 2 + this.border / 2;
            int j = i - this.labels.size() * 10 / 2;

            for (int k = 0; k < this.labels.size(); ++k) {
                if (this.centered) {
                    this.drawCenteredString(this.fontRenderer, this.labels.get(k), this.x + this.width / 2, j + k * 10, this.textColor);
                } else {
                    this.drawString(this.fontRenderer, this.labels.get(k), this.x, j + k * 10, this.textColor);
                }
            }
        }
    }

    protected void drawLabelBackground(Minecraft mcIn, int mouseX, int mouseY) {
        if (this.labelBgEnabled) {
            int i = this.width + this.border * 2;
            int j = this.height + this.border * 2;
            int k = this.x - this.border;
            int l = this.y - this.border;
            drawRect(k, l, k + i, l + j, this.backColor);
            this.drawHorizontalLine(k, k + i, l, this.ulColor);
            this.drawHorizontalLine(k, k + i, l + j, this.brColor);
            this.drawVerticalLine(k, l, l + j, this.ulColor);
            this.drawVerticalLine(k + i, l, l + j, this.brColor);
        }
    }
}