From bf454215ea0442831ef46466c425447e095cf3d4 Mon Sep 17 00:00:00 2001
From: Nao Pross <naopross@thearcway.org>
Date: Mon, 3 Dec 2018 02:04:43 +0100
Subject: Add widget anchors to place widgets in relative positions

---
 src/subconscious/graphics/Scene.java         | 28 +++++++++++++++++++++++++++-
 src/subconscious/graphics/widget/Widget.java |  9 +++++++++
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/src/subconscious/graphics/Scene.java b/src/subconscious/graphics/Scene.java
index 01b8fe9..711a60f 100644
--- a/src/subconscious/graphics/Scene.java
+++ b/src/subconscious/graphics/Scene.java
@@ -12,6 +12,7 @@ import java.lang.Thread;
 
 import java.util.ArrayList;
 import java.util.Map;
+import java.util.EnumMap;
 
 import java.util.concurrent.locks.ReentrantLock;
 import java.util.concurrent.locks.Lock;
@@ -28,6 +29,7 @@ import java.awt.Panel;
 import java.awt.RenderingHints;
 import java.awt.Font;
 import java.awt.FontFormatException;
+import java.awt.Point;
 
 import java.awt.event.KeyListener;
 import java.awt.event.KeyEvent;
@@ -72,6 +74,7 @@ public abstract class Scene extends Panel
 		RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED
 	);
 
+	protected EnumMap<Widget.Anchor, Point> widgetAnchors = new EnumMap<Widget.Anchor, Point>(Widget.Anchor.class);
 	protected ArrayList<Widget> widgets = new ArrayList<>();
 	protected ArrayList<Widget> dynamicWidgetsCache = new ArrayList<>();
 	protected ArrayList<Widget> clickableWidgetsCache = new ArrayList<>();
@@ -118,6 +121,17 @@ public abstract class Scene extends Panel
 		this.canvas.addMouseWheelListener(this);
 
 		// TODO: solve canvas
+
+		// create widget anchors 
+		this.widgetAnchors.put(Widget.Anchor.SO, new Point(0, this.canvasSize.height));
+		this.widgetAnchors.put(Widget.Anchor.S , new Point(this.canvasSize.width / 2, this.canvasSize.height));
+		this.widgetAnchors.put(Widget.Anchor.SE, new Point(this.canvasSize.width, this.canvasSize.height));
+		this.widgetAnchors.put(Widget.Anchor.E , new Point(this.canvasSize.width, this.canvasSize.width / 2));
+		this.widgetAnchors.put(Widget.Anchor.NE, new Point(this.canvasSize.width, 0));
+		this.widgetAnchors.put(Widget.Anchor.N , new Point(this.canvasSize.width / 2, 0));
+		this.widgetAnchors.put(Widget.Anchor.NO, new Point(0, 0));
+		this.widgetAnchors.put(Widget.Anchor.O , new Point(0, this.canvasSize.height / 2));
+
 		// this.add(this.canvas, BorderLayout.CENTER);
 		this.build();
 
@@ -146,8 +160,11 @@ public abstract class Scene extends Panel
 
 	protected void renderWidgets(Graphics2D g) {
 		for (Widget w : this.widgets) {
+			Point absPos = this.widgetAnchors.get(w.getAnchor());
+			absPos.translate(w.getX(), w.getY());
+
 			Graphics2D widgetGraphics = (Graphics2D) g.create(
-				w.getX(), w.getY(), w.getWidth(), w.getHeight()
+				absPos.x, absPos.y, w.getWidth(), w.getHeight()
 			);
 
 			w.render(widgetGraphics);
@@ -315,6 +332,15 @@ public abstract class Scene extends Panel
 	// this one always works
 	public synchronized void updateCanvasSize(Dimension newSize) {
 		this.canvasSize = newSize;
+
+		this.widgetAnchors.get(Widget.Anchor.SO).move(0, this.canvasSize.height);
+		this.widgetAnchors.get(Widget.Anchor.S ).move(this.canvasSize.width / 2, this.canvasSize.height);
+		this.widgetAnchors.get(Widget.Anchor.SE).move(this.canvasSize.width, this.canvasSize.height);
+		this.widgetAnchors.get(Widget.Anchor.E ).move(this.canvasSize.width, this.canvasSize.width);
+		this.widgetAnchors.get(Widget.Anchor.NE).move(this.canvasSize.width, 0);
+		this.widgetAnchors.get(Widget.Anchor.N ).move(this.canvasSize.width / 2, 0);
+		this.widgetAnchors.get(Widget.Anchor.NO).move(0, 0);
+		this.widgetAnchors.get(Widget.Anchor.O ).move(0, this.canvasSize.height / 2);
 	}
 
 	/* key listener */
diff --git a/src/subconscious/graphics/widget/Widget.java b/src/subconscious/graphics/widget/Widget.java
index 0a9e5f6..0da1b40 100644
--- a/src/subconscious/graphics/widget/Widget.java
+++ b/src/subconscious/graphics/widget/Widget.java
@@ -2,14 +2,20 @@ package subconscious.graphics.widget;
 
 import java.awt.Graphics2D;
 import java.awt.Rectangle;
+import java.awt.Point;
 
 
 public abstract class Widget {
+    public enum Anchor {
+        SO, S, SE, E, NE, N, NO, O
+    }
 
     public final String UNIQUE_NAME;
 
     protected int x, y;
     protected int width, height;
+    // default anchor is relative to (0, 0)
+    protected Anchor anchor = Anchor.NO;
 
     public Widget(String uniqueName, int x, int y, int width, int height) {
         this.UNIQUE_NAME = uniqueName;
@@ -30,6 +36,9 @@ public abstract class Widget {
 
     public int getX() { return this.x; }
     public int getY() { return this.y; }
+    public Point getPoint() { return new Point(this.x, this.y); }
     public int getWidth() { return this.width; }
     public int getHeight() { return this.height; }
+
+    public Anchor getAnchor() { return this.anchor; }
 }
\ No newline at end of file
-- 
cgit v1.2.1