package net.cscott.sdr.anim;

 import com.jme.image.Texture;

 import com.jme.scene.state.TextureState;

 import com.jme.system.DisplaySystem;

 import com.jme.util.TextureManager;

 /**

  * {@link MenuArrow} is a {@link GradientTriangle} which is sized and textured

  * appropriately for use in the {@link MenuState}.

  * @author C. Scott Ananian

  * @version $Id: MenuArrow.java,v 1.2 2006-11-13 04:27:09 cananian Exp $

  */

 public class MenuArrow extends GradientTriangle {

     final TextureState textureState;

     public MenuArrow(String name, BaseState st, boolean isLeft) {

         super(name, st.x(0), st.y(-22), st.x(isLeft?-24:24), st.y(0), st.x(0), st.y(22));

         textureState = DisplaySystem.getDisplaySystem()

             .getRenderer().createTextureState();

         textureState.setEnabled(true);

         this.setRenderState(textureState);

         this.setRenderState(BaseState.mkAlpha());

         setSelected(false);

     }

     public void setSelected(boolean isSelected) {

         textureState.setTexture(getTexture(isSelected));

         this.updateRenderState();

     }

     private static Texture[] texture = new Texture[2];

     private static Texture getTexture(boolean isSelected) {

         int which = isSelected ? 1 : 0;

         if (texture[which]==null) {

             texture[which] = TextureManager.loadTexture(

                     MenuArrow.class.getClassLoader().getResource(

                     "net/cscott/sdr/anim/menu-arrow"+

                     (isSelected?"-sel":"")+

                     ".png"),

                     Texture.MM_NONE,

                     Texture.FM_LINEAR);

         }

         return texture[which];

     }

 }