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package ch.asynk.gdx.boardgame.ui;
import com.badlogic.gdx.graphics.g2d.Batch;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.math.Rectangle;
import ch.asynk.gdx.boardgame.utils.IterableSet;
public class Container extends Element
{
public static int DEFAULT_CHILD_COUNT = 2;
public enum Pack { BEGIN, END };
public enum Direction { FREE, HORIZONTAL, VERTICAL };
protected float spacing;
protected Pack pack;
protected Direction direction;
protected IterableSet<Element> children;
private Rectangle subArea;
public Container()
{
super();
this.spacing = 0f;
this.direction = Direction.FREE;
this.children = null;
this.subArea = new Rectangle();
}
public void setSpacing(float spacing)
{
this.spacing = spacing;
taint();
}
public void setPacking(Pack pack)
{
this.pack = pack;
taint();
}
public Direction getDirection()
{
return direction;
}
public void setDirection(Direction direction)
{
this.direction = direction;
taint();
}
public void add(Element e)
{
if (children == null)
children = new IterableSet<Element>(DEFAULT_CHILD_COUNT);
if (children.add(e)) {
e.setParent(this);
}
taint();
}
public void remove(Element e)
{
if (children != null) {
if (children.remove(e)) {
e.setParent(null);
}
taint();
}
}
@Override public void computeGeometry(Rectangle area, boolean resized)
{
if ((dirty || damaged || resized) && children != null) {
if (direction == Direction.HORIZONTAL) {
// packs at the end
int n = 0;
int m = 0;
int c = 0;
for (Element e : children) {
if (!e.visible) continue;
e.computeDimensions();
c += e.rect.width;
if (Sizing.contains(e.sizing, Sizing.EXPAND_X)) m += 1;
};
float f = (area.width - c) / m;
subArea.set(area);
boolean end = (pack == Pack.END);
if (end) subArea.x += subArea.width;
for (Element e : children) {
if (!e.visible) continue;
float available = e.rect.width;
if (Sizing.contains(e.sizing, Sizing.EXPAND_X))
available += f;
subArea.width = available;
if (end) subArea.x -= available;
e.computeGeometry(subArea, true);
if (!end) subArea.x += available;
}
} else if (direction == Direction.VERTICAL) {
int n = 0;
int m = 0;
int c = 0;
for (Element e : children) {
if (!e.visible) continue;
e.computeDimensions();
c += e.rect.height;
if (Sizing.contains(e.sizing, Sizing.EXPAND_Y)) m += 1;
};
float f = (area.height - c) / m;
subArea.set(area);
boolean begin = (pack == Pack.BEGIN);
if (begin) subArea.y += subArea.height;
for (Element e : children) {
if (!e.visible) continue;
float available = e.rect.height;
if (Sizing.contains(e.sizing, Sizing.EXPAND_Y))
available += f;
subArea.height = available;
if (begin) subArea.y -= available;
e.computeGeometry(subArea, true);
if (!begin) subArea.y += available;
}
} else {
children.forEach( c -> c.computeGeometry(area, resized) );
}
damaged = false;
}
if (dirty || resized) {
super.computeGeometry(area, resized);
}
}
@Override public void drawReal(Batch batch)
{
if (children != null)
children.forEach( c -> c.draw(batch) );
}
@Override public void drawDebug(ShapeRenderer shapeRenderer)
{
shapeRenderer.rect(getX(), getY(), getWidth(), getHeight());
if (children != null)
children.forEach( c -> c.drawDebug(shapeRenderer) );
}
@Override public Element touch(float x, float y)
{
if (super.touch(x, y) != null) {
if (children != null) {
for (Element e : children) {
final Element t = e.touch(x, y);
if (t != null)
return t;
}
}
return this;
}
return null;
}
}
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