libgdx学习记录8——对话框Dialog

Dialog在游戏中也很常用，尤其在设置、退出、商店、暂停等画面。Dialog的使用也可以通过skin实现，也可以自定义。

下面是一个简单的实例：

 package com.fxb.newtest;

 import com.badlogic.gdx.ApplicationListener;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.Input.Keys;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.GL10;
 import com.badlogic.gdx.graphics.Pixmap;
 import com.badlogic.gdx.graphics.Pixmap.Format;
 import com.badlogic.gdx.graphics.Texture;
 import com.badlogic.gdx.graphics.g2d.BitmapFont;
 import com.badlogic.gdx.scenes.scene2d.Actor;
 import com.badlogic.gdx.scenes.scene2d.InputEvent;
 import com.badlogic.gdx.scenes.scene2d.InputListener;
 import com.badlogic.gdx.scenes.scene2d.Stage;
 import com.badlogic.gdx.scenes.scene2d.ui.Button;
 import com.badlogic.gdx.scenes.scene2d.ui.Button.ButtonStyle;
 import com.badlogic.gdx.scenes.scene2d.ui.Dialog;
 import com.badlogic.gdx.scenes.scene2d.ui.Label.LabelStyle;
 import com.badlogic.gdx.scenes.scene2d.ui.Skin;
 import com.badlogic.gdx.scenes.scene2d.ui.TextButton;
 import com.badlogic.gdx.scenes.scene2d.ui.TextButton.TextButtonStyle;
 import com.badlogic.gdx.scenes.scene2d.ui.Window.WindowStyle;
 import com.badlogic.gdx.scenes.scene2d.utils.Align;
 import com.badlogic.gdx.scenes.scene2d.utils.ChangeListener;
 import com.badlogic.gdx.scenes.scene2d.utils.Drawable;

 public class Lib007_Dialog implements ApplicationListener{

     Stage stage;
     Dialog dialog;
     Drawable draw1;
     Drawable draw2;
     Pixmap pixmap;
     Texture texture;
     Skin skin;
     BitmapFont font;
     Dialog dialog2;

     @Override
     public void create() {
         // TODO Auto-generated method stub

         stage = new Stage();
         skin = new Skin();
         pixmap = new Pixmap( , , Format.RGBA8888 );
         pixmap.setColor( Color.GRAY );
         pixmap.fill();
         //draw1 = new TextureRegionDrawable(  );
         //texture = new Texture( pixmap );
         skin.add( "gray", new Texture(pixmap) );

         pixmap.setColor( Color.LIGHT_GRAY );
         pixmap.fill();
         skin.add( "light_gray", new Texture(pixmap) );

         font = new BitmapFont();
         WindowStyle windowStyle = new WindowStyle( font, Color.GREEN, skin.getDrawable( "light_gray" ) );
         dialog = new Dialog( "DialogTest", windowStyle );
         dialog.setTitleAlignment( Align.center | Align.top );
         dialog.setBounds( , , ,  );

         LabelStyle labelStyle = new LabelStyle( font, Color.RED );
         ButtonStyle buttonStyle = new ButtonStyle( skin.getDrawable("gray"), skin.getDrawable("light_gray"), null );
         TextButtonStyle textbuttonStyle = new TextButtonStyle( skin.getDrawable("gray"), skin.getDrawable("light_gray"), null, font );
         skin.add( "default", buttonStyle );
         skin.add( "default", textbuttonStyle );
         skin.add( "default", windowStyle );
         skin.add( "default", labelStyle );

         Button button1 = new Button( skin );
         button1.setBounds( , , ,  );
         TextButton textbutton1 = new TextButton( "Click", skin );
         textbutton1.setBounds( -, , ,  );
         dialog.addActor( button1 );
         dialog.addActor( textbutton1 );

         stage.addActor( dialog );
         //dialog2.row().fill().expand();

         dialog2 = new Dialog( "Dialog2", skin, "default" ){
             @Override
             protected void result(Object object) {
                 // TODO Auto-generated method stub
                 //System.out.println( "Chosen" + object );
                 if( object.toString().equals( "true" ) ){
                     System.out.println( "Yes" );
                     Gdx.app.exit();
                 }else{
                     System.out.println( "No" );
                 }
             }
         };
         dialog2.text("\nDo you want to exit?").button("Yes", true).button("No",false).key(Keys.ENTER, true).key(Keys.ESCAPE,false);
         dialog2.setTitleAlignment( Align.top );
         dialog2.pack();
         //dialog2.show( stage );

         //TextButton textbutton2 = new TextButton( "Click", skin );
         textbutton1.addListener( new ChangeListener()
         {
             @Override
             public void changed(ChangeEvent event, Actor actor) {
                 // TODO Auto-generated method stub
                 dialog2.show( stage );
             }
         });

         //stage.addActor( textbutton2 );
         Gdx.input.setInputProcessor( stage );
     }

     @Override
     public void resize(int width, int height) {
         // TODO Auto-generated method stub

     }

     @Override
     public void render() {
         // TODO Auto-generated method stub
         Gdx.gl.glClearColor( , , ,  );
         Gdx.gl.glClear( GL10.GL_COLOR_BUFFER_BIT );

         stage.act();
         stage.draw();

     }

     @Override
     public void pause() {
         // TODO Auto-generated method stub
     }

     @Override
     public void resume() {
         // TODO Auto-generated method stub
     }

     @Override
     public void dispose() {
         // TODO Auto-generated method stub
         skin.dispose();
         stage.dispose();
         texture.dispose();
     }

 }

运行效果：