package com.fxb.newtest;

 import com.badlogic.gdx.ApplicationAdapter;

 import com.badlogic.gdx.Gdx;

 import com.badlogic.gdx.graphics.Color;

 import com.badlogic.gdx.graphics.GL10;

 import com.badlogic.gdx.graphics.Texture;

 import com.badlogic.gdx.graphics.glutils.ShapeRenderer;

 import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType;

 import com.badlogic.gdx.input.GestureDetector;

 import com.badlogic.gdx.input.GestureDetector.GestureAdapter;

 import com.badlogic.gdx.scenes.scene2d.Action;

 import com.badlogic.gdx.scenes.scene2d.Stage;

 import com.badlogic.gdx.scenes.scene2d.actions.Actions;

 import com.badlogic.gdx.scenes.scene2d.ui.Image;

 public class Lib025_PicChange extends ApplicationAdapter{

     GestureAdapter gestureAdapter = new GestureAdapter(){

         @Override

         public boolean fling(float velocityX, float velocityY, int button) {

             // TODO Auto-generated method stub

 /*            if( velocityX > 0 ){

                 System.out.println( "fling right" );

                 stage.getCamera().translate( -stage.getWidth(), 0, 0 );

             }

             else{

                 System.out.println( "fling left" );

                 stage.getCamera().translate( stage.getWidth(), 0, 0 );

             }*/

             return super.fling(velocityX, velocityY, button);

         }

         @Override

         public boolean pan(float x, float y, float deltaX, float deltaY) {

             // TODO Auto-generated method stub

             System.out.println( "pan" );

             if( index>0 && deltaX>0 || index<imgs.length-1 && deltaX<0 ){

                 stage.getCamera().translate( -deltaX, 0, 0 );

                 add = deltaX > 0? -1: 1;

             }            

             return super.pan(x, y, deltaX, deltaY);

         }

         @Override

         public boolean panStop(float x, float y, int pointer, int button) {

             // TODO Auto-generated method stub

             System.out.println( "pan stop" );

             if( index>0 && add==-1 || index<imgs.length-1 && add==1 ){

                 index += add;

                 stage.getCamera().position.set( index*500+stage.getWidth()/2, stage.getHeight()/2, 0 );

             }

             return super.panStop(x, y, pointer, button);

         }    

     };

     GestureDetector detector = new GestureDetector( gestureAdapter );

     Stage stage;

     Image img1, img2, img3, img4;

     Image[] imgs;

     int index;

     int add = 0;

     ShapeRenderer rend;

     @Override

     public void create() {

         // TODO Auto-generated method stub

         super.create();

         Gdx.input.setInputProcessor( detector );

         img1 = new Image( new Texture( Gdx.files.internal( "data/pal4_0.jpg" ) ) );

         img2 = new Image( new Texture( Gdx.files.internal( "data/pal4_1.jpg" ) ) );

         img3 = new Image( new Texture( Gdx.files.internal( "data/pal4_2.jpg" ) ) );

         img4 = new Image( new Texture( Gdx.files.internal( "data/pal4_3.jpg" ) ) );

         stage = new Stage();

         stage.addActor( img1 );

         stage.addActor( img2 );

         stage.addActor( img3 );

         stage.addActor( img4 );

         imgs = new Image[]{ img1, img2, img3, img4 };

         for( int i=0; i<imgs.length; ++i ){

             imgs[i].setSize( 400, 240 );

             imgs[i].setPosition( i*500 + stage.getWidth()/2-imgs[i].getWidth()/2, stage.getHeight()/2-imgs[i].getHeight()/2 );

         }

         //imgs[1].setVisible( false );

         //imgs[2].setVisible( false );

         index = 0;

         rend = new ShapeRenderer();

     }

     @Override

     public void render() {

         // TODO Auto-generated method stub

         super.render();

         Gdx.gl.glClearColor( 1, 1, 1, 1 );

         Gdx.gl.glClear( GL10.GL_COLOR_BUFFER_BIT );

         stage.act();

         stage.draw();

         rend.begin( ShapeType.Filled );

         rend.setColor( Color.LIGHT_GRAY );

         rend.rect( 0, 0, 100, 480 );

         rend.rect( 700, 0, 100, 480 );

         rend.rect( 100, 0, 700, 60 );

         rend.rect( 100, 420, 700, 60 );

         rend.end();

     }

     @Override

     public void dispose() {

         // TODO Auto-generated method stub

         rend.dispose();

         stage.dispose();

         super.dispose();

     }

 }