CustomNPC-Plus/src/main/java/noppes/npcs/client/gui/util/GuiButtonBiDirectional.java

package noppes.npcs.client.gui.util;

import net.minecraft.client.Minecraft;
import net.minecraft.util.ResourceLocation;
import org.lwjgl.opengl.GL11;

public class GuiButtonBiDirectional extends GuiNpcButton {
    public static final ResourceLocation resource = new ResourceLocation("customnpcs:textures/gui/arrowbuttons.png");

    public GuiButtonBiDirectional(int id, int x, int y, int width, int height, String[] arr, int current) {
        super(id, x, y, width, height, arr, current);
    }

    @Override
    public void drawButton(Minecraft mc, int mouseX, int mouseY) {
        if (!this.visible)
            return;

        boolean hover = mouseX >= this.xPosition && mouseY >= this.yPosition && mouseX < this.xPosition + this.width && mouseY < this.yPosition + this.height;

        boolean hoverL = mouseX >= this.xPosition && mouseY >= this.yPosition && mouseX < this.xPosition + 11 && mouseY < this.yPosition + this.height;

        boolean hoverR = !hoverL && mouseX >= this.xPosition + width - 11 && mouseY >= this.yPosition && mouseX < this.xPosition + this.width && mouseY < this.yPosition + this.height;

        GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
        mc.getTextureManager().bindTexture(resource);

        this.drawTexturedModalRect(this.xPosition, this.yPosition, 0, hoverL ? 40 : 20, 11, 20);

        this.drawTexturedModalRect(this.xPosition + width - 11, this.yPosition, 11, hoverR ? 40 : 20, 11, 20);

        int l = 0xffffff;
        if (packedFGColour != 0) {
            l = packedFGColour;
        } else if (!this.enabled) {
            l = 10526880;
        } else if (hover) {
            l = 16777120;
        }
        String text = "";
        float maxWidth = this.width - 36;
        if (mc.fontRenderer.getStringWidth(displayString) > maxWidth) {
            for (int h = 0; h < displayString.length(); h++) {
                char c = displayString.charAt(h);
                text += c;
                if (mc.fontRenderer.getStringWidth(text) > maxWidth)
                    break;
            }
            text += "...";
        } else
            text = displayString;
        if (hover)
            text = (char) 167 + "n" + text;

        this.drawCenteredString(mc.fontRenderer, text, this.xPosition + this.width / 2, this.yPosition + (this.height - 8) / 2, l);
    }

    @Override
    public boolean mousePressed(Minecraft minecraft, int mouseX, int mouseY) {
        int value = getValue();
        boolean bo = super.mousePressed(minecraft, mouseX, mouseY);
        if (bo && display != null && display.length != 0) {
            boolean hoverL = mouseX >= this.xPosition && mouseY >= this.yPosition && mouseX < this.xPosition + 11 && mouseY < this.yPosition + this.height;
            if (rightClicked.get())
                hoverL = true;

            boolean hoverR = !hoverL && mouseX >= this.xPosition + 11 && mouseY >= this.yPosition && mouseX < this.xPosition + this.width && mouseY < this.yPosition + this.height;

            if (hoverR)
                value = (value + 1) % display.length;
            if (hoverL) {
                if (value <= 0)
                    value = display.length;
                value--;
            }
            this.setDisplay(value);
        }
        return bo;
    }
}