(libgdx学习)ScrollPane
官方demo
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* Copyright 2011 See AUTHORS file.
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* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
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* http://www.apache.org/licenses/LICENSE-2.0
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package com.badlogic.gdx.tests;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL10;
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.Label;
import com.badlogic.gdx.scenes.scene2d.ui.ScrollPane;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.scenes.scene2d.ui.Slider;
import com.badlogic.gdx.scenes.scene2d.ui.Table;
import com.badlogic.gdx.scenes.scene2d.ui.TextButton;
import com.badlogic.gdx.scenes.scene2d.ui.TextButton.TextButtonStyle;
import com.badlogic.gdx.scenes.scene2d.utils.ChangeListener;
import com.badlogic.gdx.scenes.scene2d.utils.ClickListener;
import com.badlogic.gdx.tests.utils.GdxTest;
public class ScrollPaneTest extends GdxTest {
private Stage stage;
private Table container;
public void create () {
stage = new Stage(0, 0, false);
Skin skin = new Skin(Gdx.files.internal("data/uiskin.json"));
Gdx.input.setInputProcessor(stage);
// Gdx.graphics.setVSync(false);
container = new Table();
stage.addActor(container);
container.setFillParent(true);
Table table = new Table();
// table.debug();
final ScrollPane scroll = new ScrollPane(table, skin);
InputListener stopTouchDown = new InputListener() {
public boolean touchDown (InputEvent event, float x, float y, int pointer, int button) {
event.stop();
return false;
}
};
table.pad(10).defaults().expandX().space(4);
for (int i = 0; i < 100; i++) {
table.row();
table.add(new Label(i + "uno", skin)).expandX().fillX();
/**
* 往table中添加TextButton
*/
// TextButton button = new TextButton(i + "dos", skin);//创建一个TextButton
// table.add(button);
// button.addListener(new ClickListener() {//给TextButton添加点击事件
// public void clicked (InputEvent event, float x, float y) {
// System.out.println("click " + x + ", " + y);
// }
// });
/**
* 这个音量条(类似)里面添加进度条
*/
// Slider slider = new Slider(0, 100, 1, false, skin);
// slider.addListener(stopTouchDown); // Stops touchDown events from propagating to the FlickScrollPane.
// table.add(slider);
//
// table.add(new Label(i + "tres long0 long1 long2 long3 long4 long5 long6 long7 long8 long9 long10 long11 long12", skin));
table.add(new Label(i + "tres long0 long1 ", skin));
}
final TextButton flickButton = new TextButton("Flick Scroll", skin.get("toggle", TextButtonStyle.class));
flickButton.setChecked(true);
flickButton.addListener(new ChangeListener() {
public void changed (ChangeEvent event, Actor actor) {
scroll.setFlickScroll(flickButton.isChecked());
}
});
final TextButton fadeButton = new TextButton("Fade Scrollbars", skin.get("toggle", TextButtonStyle.class));
fadeButton.setChecked(true);//将按钮设置为选中状态
fadeButton.addListener(new ChangeListener() {
public void changed (ChangeEvent event, Actor actor) {
scroll.setFadeScrollBars(fadeButton.isChecked());
}
});
//
// final TextButton smoothButton = new TextButton("Smooth Scrolling", skin.get("toggle", TextButtonStyle.class));
// smoothButton.setChecked(true);
// smoothButton.addListener(new ChangeListener() {
// public void changed (ChangeEvent event, Actor actor) {
// scroll.setSmoothScrolling(smoothButton.isChecked());
// }
// });
//
// final TextButton onTopButton = new TextButton("Scrollbars On Top", skin.get("toggle", TextButtonStyle.class));
// onTopButton.setChecked(true);
// onTopButton.addListener(new ChangeListener() {
// public void changed (ChangeEvent event, Actor actor) {
// scroll.setScrollbarsOnTop(onTopButton.isChecked());
// }
// });
/**
* 以下是Table的相关API的一些个人的解释
* row():开启一个新行
* right():向右移动一点,默认在最左边
* left():在最左边显示,默认在中间
* expandX():扩展X轴(最明显的效果就是用了这个以后位置向右移动了)
* add()添加一列
* right().expandX():可以理解为不断地向右拓展...
* space(10): 单元格与单元格之间的距离以及单元格与上边界之间的距离
* padBottom(0): 单元格与下边界之间的距离为0
* fill():将fillX()、fillY()设置成1
*/
// container.add(scroll).expand().fill().colspan(4);
container.add(scroll).fill().expand().colspan(4);
container.row().space(10).padBottom(0);
container.add(flickButton).right().expandX();
// container.add(onTopButton);
// container.add(smoothButton);
container.add(fadeButton).left().expandX();
}
public void render () {
Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
stage.act(Gdx.graphics.getDeltaTime());
stage.draw();
Table.drawDebug(stage);
}
public void resize (int width, int height) {
stage.setViewport(width, height, false);
}
public void dispose () {
stage.dispose();
}
public boolean needsGL20 () {
return false;
}
}
以下是自己写的小demo
package com.example.groupactiontest;
import com.badlogic.gdx.ApplicationListener;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input.Keys;
import com.badlogic.gdx.Input.Peripheral;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.scenes.scene2d.InputListener;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Label;
import com.badlogic.gdx.scenes.scene2d.ui.ScrollPane;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.scenes.scene2d.ui.Table;
public class MyGame implements ApplicationListener {
Stage stage;
Table container;
@Override
public void create() {
stage = new Stage();
container = new Table();
stage.addActor(container);
container.setFillParent(true);//这个必须要有,否则会显示不出来...
Gdx.input.setInputProcessor(stage);
Skin skin = new Skin(Gdx.files.internal("uiskin.json"));
Table table = new Table();
ScrollPane scroll = new ScrollPane(table,skin);
/**
* 一单击屏幕就停止滚动
*/
InputListener stopTouchDown = new InputListener(){
public boolean touchDown(com.badlogic.gdx.scenes.scene2d.InputEvent event, float x, float y, int pointer, int button) {
event.stop();
return false;
};
};
table.pad(10).defaults().expandX().space(4);//这一行没有也不会对结果有太大影响....
for(int i = 0 ; i < 100 ; ++i){//scroll里面的内容就是一百行
table.row();//开启一个新行
table.add(new Label("hello world" + i, skin));//这里不要写成table.add("hellozzt" + i),否则会报错...
}
container.add(scroll).fill().expand().colspan(4);
}
@Override
public void dispose() {
// TODO Auto-generated method stub
}
@Override
public void pause() {
// TODO Auto-generated method stub
}
@Override
public void render() {
Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
stage.act();
stage.draw();
}
@Override
public void resize(int arg0, int arg1) {
// TODO Auto-generated method stub
}
@Override
public void resume() {
// TODO Auto-generated method stub
}
}
整理好后的demo
package com.example.groupactiontest;
import com.badlogic.gdx.ApplicationListener;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input.Keys;
import com.badlogic.gdx.Input.Peripheral;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Label;
import com.badlogic.gdx.scenes.scene2d.ui.ScrollPane;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.scenes.scene2d.ui.Table;
public class MyGame implements ApplicationListener {
Stage stage;
Table container;
@Override
public void create() {
stage = new Stage();
container = new Table();
stage.addActor(container);
container.setFillParent(true);
Gdx.input.setInputProcessor(stage);
Skin skin = new Skin(Gdx.files.internal("uiskin.json"));
Table table = new Table();
ScrollPane scroll = new ScrollPane(table, skin);
for(int i = 0 ; i < 100 ; ++i){
table.row();
table.add(new Label("hellozzt" + i, skin));
}
container.add(scroll).fill().expand().colspan(4);
}
@Override
public void dispose() {
// TODO Auto-generated method stub
}
@Override
public void pause() {
// TODO Auto-generated method stub
}
@Override
public void render() {
Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
stage.act();
stage.draw();
}
@Override
public void resize(int arg0, int arg1) {
// TODO Auto-generated method stub
}
@Override
public void resume() {
// TODO Auto-generated method stub
}
}
四、源码下载
http://download.csdn.net/detail/caihongshijie6/7105501