From 421b3191fd692ef01fbc4356132f9745ef087700 Mon Sep 17 00:00:00 2001
From: lonkaars <loek@pipeframe.xyz>
Date: Sun, 13 Jun 2021 13:31:55 +0200
Subject: selection in timeline working sorta

---
 components/selection.tsx |  2 +-
 pages/editor.tsx         | 38 ++++++++++++++++++++++++++++++++++++--
 styles/editor.css        |  4 ++++
 3 files changed, 41 insertions(+), 3 deletions(-)

diff --git a/components/selection.tsx b/components/selection.tsx
index 4a0812f..d1753f0 100644
--- a/components/selection.tsx
+++ b/components/selection.tsx
@@ -68,7 +68,7 @@ export default function Selection(props: {
 	left?: slideTypes;
 	right?: slideTypes;
 }) {
-	var small = props.width < 24 || props.height < 24;
+	var small = props.width < 24 || props.height < 24 || !props.left || !props.right;
 	return <div
 		className='selection'
 		style={{
diff --git a/pages/editor.tsx b/pages/editor.tsx
index 89d3887..8b9fef3 100644
--- a/pages/editor.tsx
+++ b/pages/editor.tsx
@@ -23,6 +23,7 @@ import SkipPreviousRoundedIcon from '@material-ui/icons/SkipPreviousRounded';
 import { mdiCursorDefault } from '@mdi/js';
 import { PressureIcon, SlideKeyframe } from '../components/icons';
 import PlaySkipIconAni from '../components/play-skip';
+import Selection from '../components/selection';
 
 var keyframeInAnimations: { [key: string]: { x: number; y: number; }; } = {};
 
@@ -334,6 +335,31 @@ function TimelineEditor(props: {
 		});
 	}, []);
 
+	var [selectionPosX, setSelectionPosX] = useState(0);
+	var [selectionPosY, setSelectionPosY] = useState(0);
+	var [selectionWidth, setSelectionWidth] = useState(0);
+	var [selectionHeight, setSelectionHeight] = useState(0);
+
+	var selectionRef = useRef(null);
+	useDrag(({ xy: [x, y], initial: [bx, by] }) => {
+		if (props.selectedTool != 'cursor') return;
+		// var frame = Math.max(0, Math.round(getFrameAtOffset(x - 240, timelineZoom)) - 1);
+		var timelineInner = document.querySelector('.timeline .timelineInner');
+		var timelineRects = timelineInner.getBoundingClientRect();
+		var tx = x - timelineRects.x + timelineInner.scrollLeft;
+		var ty = y - timelineRects.y;
+		var ix = bx - timelineRects.x + timelineInner.scrollLeft;
+		var iy = by - timelineRects.y;
+
+		var sx = tx - ix;
+		var sy = ty - iy;
+
+		setSelectionPosX(ix + Math.min(0, sx));
+		setSelectionPosY(iy + Math.min(0, sy));
+		setSelectionWidth(Math.abs(sx));
+		setSelectionHeight(Math.abs(sy));
+	}, { domTarget: selectionRef, eventOptions: { passive: false } });
+
 	return <>
 		<canvas
 			className='timeScale posabs a0'
@@ -376,8 +402,16 @@ function TimelineEditor(props: {
 			<div
 				className='keyframes'
 				style={{ '--total-frames': props.player?.timeline?.framecount.toString() } as CSSProperties}
-				children={workingTimeline.map((slide: anySlide) => <TimelineKeyframe slide={slide} />)}
-			/>
+			>
+				<div className='selectionarea posabs v0' ref={selectionRef} />
+				{workingTimeline.map((slide: anySlide) => <TimelineKeyframe slide={slide} />)}
+				<div
+					id='selection'
+					className='posabs dispinbl'
+					style={{ left: selectionPosX - 6, top: selectionPosY - 6 }}
+					children={<Selection width={selectionWidth + 12} height={selectionHeight + 12} />}
+				/>
+			</div>
 		</div>
 		<div className={'ghostArea posabs a0' + (props.selectedTool != 'cursor' ? ' active' : '')}>
 			<animated.div
diff --git a/styles/editor.css b/styles/editor.css
index a333a56..fc56488 100644
--- a/styles/editor.css
+++ b/styles/editor.css
@@ -169,6 +169,10 @@
 	width: calc(var(--zoom) * var(--total-frames) * 1px);
 }
 
+.appGrid .timeline .keyframes .selectionarea {
+	width: calc(var(--zoom) * var(--total-frames) * 1px);
+}
+
 .appGrid .timeline .ghostArea {
 	pointer-events: none;
 	line-height: 0;
-- 
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