TableToolkit.java

/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * 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 com.badlogic.gdx.scenes.scene2d.ui;

import java.lang.reflect.InvocationTargetException;

import com.badlogic.gdx.math.Rectangle;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.Group;
import com.badlogic.gdx.scenes.scene2d.utils.Layout;
import com.badlogic.gdx.utils.Array;
import com.esotericsoftware.tablelayout.BaseTableLayout.Debug;
import com.esotericsoftware.tablelayout.Toolkit;

/**
 * The libgdx implementation of the table layout functionality.
 * 
 * @author Nathan Sweet
 */
class TableToolkit extends Toolkit<Actor, Table, TableLayout> {
	static boolean drawDebug;

	public void addChild(Actor parent, Actor child) {
		child.remove();
		try {
			parent.getClass().getMethod("setWidget", Actor.class).invoke(parent, child);
			return;
		} catch (InvocationTargetException ex) {
			throw new RuntimeException("Error calling setWidget.", ex);
		} catch (Exception ignored) {
		}
		((Group) parent).addActor(child);
	}

	public void removeChild(Actor parent, Actor child) {
		((Group) parent).removeActor(child);
	}

	public float getMinWidth(Actor actor) {
		if (actor instanceof Layout)
			return ((Layout) actor).getMinWidth();
		return actor.getWidth();
	}

	public float getMinHeight(Actor actor) {
		if (actor instanceof Layout)
			return ((Layout) actor).getMinHeight();
		return actor.getHeight();
	}

	public float getPrefWidth(Actor actor) {
		if (actor instanceof Layout)
			return ((Layout) actor).getPrefWidth();
		return actor.getWidth();
	}

	public float getPrefHeight(Actor actor) {
		if (actor instanceof Layout)
			return ((Layout) actor).getPrefHeight();
		return actor.getHeight();
	}

	public float getMaxWidth(Actor actor) {
		if (actor instanceof Layout)
			return ((Layout) actor).getMaxWidth();
		return 0;
	}

	public float getMaxHeight(Actor actor) {
		if (actor instanceof Layout)
			return ((Layout) actor).getMaxHeight();
		return 0;
	}

	public float getWidth(Actor widget) {
		return widget.getWidth();
	}

	public float getHeight(Actor widget) {
		return widget.getHeight();
	}

	public void clearDebugRectangles(TableLayout layout) {
		if (layout.debugRects != null)
			layout.debugRects.clear();
	}

	public void addDebugRectangle(TableLayout layout, Debug type, float x, float y, float w, float h) {
		drawDebug = true;
		if (layout.debugRects == null)
			layout.debugRects = new Array();
		layout.debugRects.add(new DebugRect(type, x, layout.getTable().getHeight() - y, w, h));
	}

	static class DebugRect extends Rectangle {
		final Debug type;

		public DebugRect(Debug type, float x, float y, float width, float height) {
			super(x, y, width, height);
			this.type = type;
		}
	}
}