LibGDX - ImageButton - 设置图像与背景

Question

根据我的理解,ImageButton内部LibGDX是包含图像的框架.是否可以设置框架的背景？

例如,我想使用Button背景,并在该图像的顶部应用一个Icon.

现行守则

皮肤与背景:

"com.badlogic.gdx.scenes.scene2d.ui.ImageButton$ImageButtonStyle": {
    "default": {
        "imageDown": "button-down", 
        "imageUp": "button-up"
    }
}

创建ImageButton:

// Getting imageButtonStyle with "default" style, as it just has the background.
ImageButton.ImageButtonStyle imageButtonStyle = skin.get( "default", ImageButton.ImageButtonStyle.class );
ImageButton button = new ImageButton( imageButtonStyle );
// Set the image on the button to something.

背景图片.

背景图象覆盖的图标.

谢谢您的帮助.

Answer 1

诀窍是使用2种不同的样式.ImageButtonStyle用于设置图标属性,但由于ImageButtonStyle扩展了ButtonStyle,因此背景属性在ButtonStyle中设置.就像是:

ImageButtonStyle style = new ImageButtonStyle();
style.up           = background;
style.down         = background;
style.checked      = background;
style.imageUp      = icon_up;
style.imageDown    = icon_down;
style.imageChecked = icon_checked;
style.unpressedOffsetY = -20; // to "not" center the icon
style.unpressedOffsetX = -30; // to "not" center the icon

ImageButton heartButton = new ImageButton(style);
ImageButton envelopeButton = new ImageButton(envelopeStyle);

这样的东西(对我来说,背景,icon_*都是Drawable).但这是基础知识,对我来说就像一个魅力.