GuiButtonNextPageMF.java

package minefantasy.client.gui;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.GuiButton;
import net.minecraft.util.ResourceLocation;

import org.lwjgl.opengl.GL11;

@SideOnly(Side.CLIENT)
public class GuiButtonNextPageMF extends GuiButton
{
	private static final ResourceLocation tex = new ResourceLocation("textures/gui/book.png");
    /**
     * True for pointing right (next page), false for pointing left (previous page).
     */
    private final boolean nextPage;

    public GuiButtonNextPageMF(int par1, int par2, int par3, boolean par4)
    {
        super(par1, par2, par3, 23, 13, "");
        this.nextPage = par4;
    }

    /**
     * Draws this button to the screen.
     */
    public void drawButton(Minecraft mc, int x, int y)
    {
        if (this.drawButton)
        {
            boolean flag = x >= this.xPosition && y >= this.yPosition && x < this.xPosition + this.width && y < this.yPosition + this.height;
            GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
            mc.renderEngine.bindTexture(tex);
            int k = 0;
            int l = 192;

            if (flag)
            {
                k += 23;
            }

            if (!this.nextPage)
            {
                l += 13;
            }

            this.drawTexturedModalRect(this.xPosition, this.yPosition, k, l, 23, 13);
        }
    }
}