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    }