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new candlestick chart demo #606

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new candlestick chart demo #606

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3a84c6f
implement horizontalPanZoomScrollerPlugin and demo to horizontal mous…
euprogramador Oct 31, 2021
67a35b3
added y re-scale
euprogramador Nov 2, 2021
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54 changes: 54 additions & 0 deletions demos/candlestick-ohlc-pan-zoom-scroller.html
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
<title>Candlestick Chart</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="../dist/uPlot.min.css">

</head>

<body>
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}, false);



/* left axis scale */

let leftAxisScale = u.root.querySelectorAll(".u-axis")[1];
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@leeoniya leeoniya Nov 3, 2021 •
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great to see use of cutting-edge features :)

this was exactly the use-case i had in mind for these rects, too.

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I'm implementing a trading system, and the graphic visualization in metatrader doesn't support the graphic types I want to create. I will actually use context2d to create cluster footprint charts. vertical scale will be required to implement these features.

as I saw that others wanted this, I decided to implement it in the example to help those who also want these features, I thought your project was really cool and very fast.

let valYscaleBefore = 0;

let clientYMove = 0;


function move() {
rafPending = false;

let diff = 0;

lftx = u.valToPos(u.scales.x.min, 'x');
widx = u.valToPos(u.scales.x.max, 'x');

lfty = u.valToPos(u.scales.y.min, 'y');
widy = u.valToPos(u.scales.y.max, 'y') + (valYscaleBefore - clientYMove) ;

zoomed(lftx, widx, lfty, widy);
};

let animateMove = function(e){
clientYMove = e.clientY;

if (!rafPending) {
rafPending = true;

requestAnimationFrame(move);
}
}




leftAxisScale.addEventListener("mousedown", (e) => {
valYscaleBefore = e.clientY;
leftAxisScale.addEventListener("mousemove", animateMove, { passive: true });
}, false);

leftAxisScale.addEventListener("mouseup", (e) => {
leftAxisScale.removeEventListener("mousemove", animateMove, { passive: true });
}, false);

/* end: left axis scale */


}

return {
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</script>


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2 changes: 1 addition & 1 deletion demos/candlestick-ohlc.html
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Expand Up @@ -227,7 +227,7 @@
});

opts.series.forEach(series => {
series.paths = () => null;
//series.paths = () => null;
series.points = {show: false};
});
},
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