    001    package net.minecraft.client.gui;
    002
    003    import cpw.mods.fml.relauncher.Side;
    004    import cpw.mods.fml.relauncher.SideOnly;
    005    import net.minecraft.client.Minecraft;
    006    import org.lwjgl.opengl.GL11;
    007
    008    @SideOnly(Side.CLIENT)
    009    public class GuiButtonMerchant extends GuiButton
    010    {
    011        /**
    012         * If true, then next page button will face to right, if false then next page button will face to left.
    013         */
    014        private final boolean mirrored;
    015
    016        public GuiButtonMerchant(int par1, int par2, int par3, boolean par4)
    017        {
    018            super(par1, par2, par3, 12, 19, "");
    019            this.mirrored = par4;
    020        }
    021
    022        /**
    023         * Draws this button to the screen.
    024         */
    025        public void drawButton(Minecraft par1Minecraft, int par2, int par3)
    026        {
    027            if (this.drawButton)
    028            {
    029                GL11.glBindTexture(GL11.GL_TEXTURE_2D, par1Minecraft.renderEngine.getTexture("/gui/trading.png"));
    030                GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    031                boolean var4 = par2 >= this.xPosition && par3 >= this.yPosition && par2 < this.xPosition + this.width && par3 < this.yPosition + this.height;
    032                int var5 = 0;
    033                int var6 = 176;
    034
    035                if (!this.enabled)
    036                {
    037                    var6 += this.width * 2;
    038                }
    039                else if (var4)
    040                {
    041                    var6 += this.width;
    042                }
    043
    044                if (!this.mirrored)
    045                {
    046                    var5 += this.height;
    047                }
    048
    049                this.drawTexturedModalRect(this.xPosition, this.yPosition, var6, var5, this.width, this.height);
    050            }
    051        }
    052    }