package com.badlogic.gdx.scenes.scene2d.ui;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.BitmapFont.TextBounds;
import com.badlogic.gdx.graphics.g2d.BitmapFontCache;
import com.badlogic.gdx.graphics.g2d.NinePatch;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.tablelayout.Table;
/** A table that can be dragged and act as a modal window.
* <p>
* The preferred size of a window is the preferred size of the children as layed out by the table. After adding children to the
* window, it can be convenient to call {@link #pack()} to size the window to the size of the children.
* @author Nathan Sweet */
public class Window extends Table {
private WindowStyle style;
private String title;
private BitmapFontCache titleCache;
private boolean isMovable = true, isModal;
private final Vector2 dragOffset = new Vector2();
private boolean dragging;
public Window (Skin skin) {
this("", skin.getStyle(WindowStyle.class), null);
setSkin(skin);
}
public Window (String title, Skin skin) {
this(title, skin.getStyle(WindowStyle.class), null);
setSkin(skin);
}
public Window (String title, WindowStyle style) {
this(title, style, null);
}
public Window (String title, WindowStyle style, String name) {
super(null, null, name);
if (title == null) throw new IllegalArgumentException("title cannot be null.");
setClip(true);
this.title = title;
setStyle(style);
width = 150;
height = 150;
}
public void setStyle (WindowStyle style) {
if (style == null) throw new IllegalArgumentException("style cannot be null.");
this.style = style;
setBackground(style.background);
titleCache = new BitmapFontCache(style.titleFont);
titleCache.setColor(style.titleFontColor);
invalidateHierarchy();
}
/** Returns the window's style. Modifying the returned style may not have an effect until {@link #setStyle(WindowStyle)} is
* called. */
public WindowStyle getStyle () {
return style;
}
private int getTitleBarHeight () {
return getTableLayout().getToolkit().height(getTableLayout(), getPadTop());
}
public void layout () {
super.layout();
TextBounds bounds = style.titleFont.getMultiLineBounds(title);
titleCache.setMultiLineText(title, width / 2 - bounds.width / 2, height - getTitleBarHeight() / 2 + bounds.height / 2);
}
protected void drawBackground (SpriteBatch batch, float parentAlpha) {
super.drawBackground(batch, parentAlpha);
// Draw the title without the batch transformed or clipping applied.
titleCache.setPosition(x, y);
titleCache.draw(batch, parentAlpha);
}
public boolean touchDown (float x, float y, int pointer) {
if (pointer != 0) return false;
// Make this window on top.
if (parent.getActors().size() > 1) parent.swapActor(this, parent.getActors().get(parent.getActors().size() - 1));
if (super.touchDown(x, y, pointer)) return true;
dragging = isMovable && height - y <= getTitleBarHeight() && y < height && x > 0 && x < width;
dragOffset.set(x, y);
return true;
}
public void touchDragged (float x, float y, int pointer) {
if (!dragging) return;
this.x += x - dragOffset.x;
this.y += y - dragOffset.y;
}
public Actor hit (float x, float y) {
return isModal || (x > 0 && x < width && y > 0 && y < height) ? this : null;
}
public void setTitle (String title) {
this.title = title;
}
public String getTitle () {
return title;
}
public void setMovable (boolean isMovable) {
this.isMovable = isMovable;
}
public void setModal (boolean isModal) {
this.isModal = isModal;
}
static public class WindowStyle {
public NinePatch background;
public BitmapFont titleFont;
public Color titleFontColor = new Color(1, 1, 1, 1);
public WindowStyle () {
}
public WindowStyle (BitmapFont titleFont, Color titleFontColor, NinePatch backgroundPatch) {
this.background = backgroundPatch;
this.titleFont = titleFont;
this.titleFontColor.set(titleFontColor);
}
}
}