From 3b6bc85271f3f69d183ed02c8752f022ed38af60 Mon Sep 17 00:00:00 2001
From: Djeeberjr <djeeberjr@gmail.com>
Date: Fri, 4 Mar 2022 00:59:02 +0100
Subject: [PATCH] pass events to ui element

---
 src/lib/ui/reactive/IElement.hx    | 10 --------
 src/lib/ui/reactive/ReactiveUI.hx  | 39 ++++++++++++++++++++++--------
 src/lib/ui/reactive/TextElement.hx | 19 ++++++---------
 src/lib/ui/reactive/UIElement.hx   | 20 +++++++++++++++
 4 files changed, 57 insertions(+), 31 deletions(-)
 delete mode 100644 src/lib/ui/reactive/IElement.hx
 create mode 100644 src/lib/ui/reactive/UIElement.hx

diff --git a/src/lib/ui/reactive/IElement.hx b/src/lib/ui/reactive/IElement.hx
deleted file mode 100644
index 7289ab9..0000000
--- a/src/lib/ui/reactive/IElement.hx
+++ /dev/null
@@ -1,10 +0,0 @@
-package lib.ui.reactive;
-
-using tink.CoreApi;
-
-import util.Vec.Vec2;
-
-interface IElement {
-	public function render(bounds:Vec2<Int>):Canvas;
-	public var changed(default, null):Signal<Noise>;
-}
diff --git a/src/lib/ui/reactive/ReactiveUI.hx b/src/lib/ui/reactive/ReactiveUI.hx
index 7b1a307..b3ed562 100644
--- a/src/lib/ui/reactive/ReactiveUI.hx
+++ b/src/lib/ui/reactive/ReactiveUI.hx
@@ -1,31 +1,48 @@
 package lib.ui.reactive;
 
+import util.Rect;
 import kernel.Log;
 import util.Color;
 import util.Vec.Vec2;
 import kernel.ui.WindowContext;
 
+using tink.CoreApi;
+
 class ReactiveUI {
 	private final context:WindowContext;
-	private final children:Array<IElement>;
+	private final children:Array<UIElement>;
+	private var elementMap: Map<Rect,UIElement> = new Map();
 
-	public function new(context:WindowContext, children:Array<IElement>) {
+	public function new(context:WindowContext, children:Array<UIElement>) {
 		this.context = context;
 		this.children = children;
 
 		for (child in children) {
-			child.changed.handle(v -> {
+			child.changed.handle(_ -> {
+				context.reset();
 				render();
 			});
 		}
+
+		setupEvents();
+	}
+
+	private function setupEvents() {
+		context.clickSignal.handle(params ->{
+			for (k => v in this.elementMap){
+				if (k.isInside(params.pos)){
+					v.handleClickEvent(params.pos,params.button);
+				}
+			}
+		});
 	}
 
 	public function render() {
 		var size = context.getSize();
+		var result = renderChildren(children, size);
+		this.elementMap = result.map;
 
-		var screen = renderChildren(children, size);
-
-		writeToContext(screen);
+		writeToContext(result.canvas);
 	}
 
 	private function writeToContext(screen:Canvas) {
@@ -62,8 +79,9 @@ class ReactiveUI {
 		}
 	}
 
-	public static function renderChildren(children:Array<IElement>, bounds:Vec2<Int>):Canvas {
-		var rtn:Canvas = new Canvas();
+	public static function renderChildren(children:Array<UIElement>, bounds:Vec2<Int>):{canvas: Canvas, map: Map<Rect,UIElement>} {
+		var canvas:Canvas = new Canvas();
+		var elementMap: Map<Rect,UIElement> = new Map();
 
 		var writePoint:Vec2<Int> = {x: 0, y: 0};
 
@@ -79,11 +97,12 @@ class ReactiveUI {
 				y: bounds.y - writePoint.y
 			});
 
-			rtn.combine(childRender, writePoint);
+			canvas.combine(childRender, writePoint);
+			elementMap.set(new Rect(writePoint,{x: childRender.maxWidth(), y: writePoint.y + childRender.hight()}),child);
 
 			writePoint = {x: 0, y: writePoint.y + childRender.hight()};
 		}
 
-		return rtn;
+		return {canvas: canvas,map: elementMap};
 	}
 }
diff --git a/src/lib/ui/reactive/TextElement.hx b/src/lib/ui/reactive/TextElement.hx
index 9f2eef2..f7fd7a5 100644
--- a/src/lib/ui/reactive/TextElement.hx
+++ b/src/lib/ui/reactive/TextElement.hx
@@ -1,5 +1,7 @@
 package lib.ui.reactive;
 
+import kernel.Log;
+import kernel.ButtonType;
 import util.Observable;
 using tink.CoreApi;
 
@@ -7,17 +9,13 @@ import util.Color;
 import util.Vec.Vec2;
 import util.MathI;
 
-class TextElement implements IElement {
-	public var changed(default, null):Signal<Noise>;
-
-	private var changedTrigger:SignalTrigger<Noise>;
-
+class TextElement extends UIElement {
 	private final text:Observable<String>;
 	private final bg:Color;
 	private final fg:Color;
 
 	public function new(text:Observable<String>, ?background:Color = Black, ?textColor:Color = White) {
-		setupTrigger();
+		super();
 
 		this.text = text;
 		this.bg = background;
@@ -28,11 +26,6 @@ class TextElement implements IElement {
 		});
 	}
 
-	private function setupTrigger() {
-		changedTrigger = Signal.trigger();
-		changed = changedTrigger.asSignal();
-	}
-
 	public function render(bounds:Vec2<Int>):Canvas {
 		var rtn = new Canvas();
 
@@ -45,4 +38,8 @@ class TextElement implements IElement {
 
 		return rtn;
 	}
+
+	public override function handleClickEvent(pos: Vec2<Int>,button: ButtonType):Void {
+		Log.debug('Click: ${this.text.get()}');
+	}
 }
diff --git a/src/lib/ui/reactive/UIElement.hx b/src/lib/ui/reactive/UIElement.hx
new file mode 100644
index 0000000..6509ffa
--- /dev/null
+++ b/src/lib/ui/reactive/UIElement.hx
@@ -0,0 +1,20 @@
+package lib.ui.reactive;
+
+import kernel.Log;
+import kernel.ButtonType;
+import util.Vec.Vec2;
+
+using tink.CoreApi;
+
+abstract class UIElement {
+	abstract public function render(bounds:Vec2<Int>):Canvas;
+	public var changed(default, null):Signal<Noise>;
+	private final changedTrigger:SignalTrigger<Noise> = Signal.trigger();
+
+	public function new() {
+		changed = changedTrigger.asSignal();
+	}
+
+	public function handleClickEvent(pos: Vec2<Int>,button: ButtonType):Void {
+	}
+}