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support library for libGDX
/** Copyright 2014 Robin Stumm ([email protected], http://dermetfan.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License. */
package net.dermetfan.gdx.scenes.scene2d.ui;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.scenes.scene2d.ui.Button;
import com.badlogic.gdx.scenes.scene2d.ui.Button.ButtonStyle;
import com.badlogic.gdx.scenes.scene2d.ui.ImageButton;
import com.badlogic.gdx.scenes.scene2d.ui.ImageButton.ImageButtonStyle;
import com.badlogic.gdx.scenes.scene2d.ui.ImageTextButton;
import com.badlogic.gdx.scenes.scene2d.ui.ImageTextButton.ImageTextButtonStyle;
import com.badlogic.gdx.scenes.scene2d.ui.TextButton;
import com.badlogic.gdx.scenes.scene2d.ui.TextButton.TextButtonStyle;
import com.badlogic.gdx.scenes.scene2d.ui.Widget;
import com.badlogic.gdx.utils.Json;
import com.badlogic.gdx.utils.JsonValue;
/** Provides useful methods for {@link com.badlogic.gdx.scenes.scene2d.ui scene2d.ui}.
* Extends {@link com.badlogic.gdx.scenes.scene2d.utils.UIUtils UIUtils} to avoid name clashes.
* @author dermetfan
* @since 0.7.1 */
public class UIUtils extends com.badlogic.gdx.scenes.scene2d.utils.UIUtils {
/** @param widget the Widget to resize according to its min, pref and max size
* @deprecated seems unnecessary and with no known use case */
@Deprecated
public static void layoutSize(Widget widget) {
widget.setSize(MathUtils.clamp(widget.getPrefWidth(), widget.getMinWidth(), widget.getMaxWidth() == 0 ? Float.POSITIVE_INFINITY : widget.getMaxWidth()), MathUtils.clamp(widget.getPrefHeight(), widget.getMinHeight(), widget.getMaxHeight() == 0 ? Float.POSITIVE_INFINITY : widget.getMaxHeight()));
}
/** @see #newButton(Button.ButtonStyle, String) */
public static Button newButton(ButtonStyle style) {
return newButton(style, "");
}
/** creates a {@link Button} according to the given {@link Button.ButtonStyle} instance that may be {@link Button.ButtonStyle}, {@link TextButton.TextButtonStyle}, {@link ImageButton.ImageButtonStyle} or {@link ImageTextButton.ImageTextButtonStyle} */
public static Button newButton(ButtonStyle style, String textIfAny) {
if(style instanceof ImageTextButtonStyle)
return new ImageTextButton(textIfAny, (ImageTextButtonStyle) style);
if(style instanceof TextButtonStyle)
return new TextButton(textIfAny, (TextButtonStyle) style);
if(style instanceof ImageButtonStyle)
return new ImageButton((ImageButtonStyle) style);
return new Button(style);
}
/** Tries to load a {@link TextButton.TextButtonStyle}, then {@link ImageButton.ImageButtonStyle}, then {@link ImageTextButton.ImageTextButtonStyle} and then {@link Button.ButtonStyle} using {@link Json#readValue(String, Class, JsonValue)} brutally by catching NPEs. Nasty... */
public static ButtonStyle readButtonStyle(String name, Json json, JsonValue jsonValue) {
try {
return json.readValue(name, TextButtonStyle.class, jsonValue);
} catch(NullPointerException e) {
try {
return json.readValue(name, ImageButtonStyle.class, jsonValue);
} catch(NullPointerException e1) {
try {
return json.readValue(name, ImageTextButtonStyle.class, jsonValue);
} catch(NullPointerException e2) {
try {
return json.readValue(name, ButtonStyle.class, jsonValue);
} catch(NullPointerException e3) {
return null;
}
}
}
}
}
}