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@ChandrakantThakkarDigiCorp
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Range Slider D3 V4
<html>
<head>
<style>
.text-container {
max-width: 32%;
}
.button-apply {
text-align: center;
}
.text-div {
padding: 5px;
display: flex;
justify-content: space-between;
}
.text-span {
margin-left: 10px;
}
</style>
<title> </title>
<script src="https://d3js.org/d3.v4.min.js"></script>
</head>
<body>
<div class="range-slider">
<svg id="svg">
<g class="axisContainer">
<g class="range-slider-axis" id="axesContainer" />
<g id="labelRef">
<text
fillColor="#808080"
class="arrow-upper-label"
x="0"
y="-10"
text=""
style="text-anchor: middle;"
/>
</g>
<g class="range-slider-arrow" id="arrowContainer">
<g id="arrowRef" />
</g>
<g class="range-slider-brush" id="brushContainer" />
</g>
</svg>
<div class="text-container">
<div class="text-div">
Step Size :<input
class="text-span"
type="text"
value="1"
id="stepSize"
/>
</div>
<div class="text-div">
Slider Size :<input
class="text-span"
type="text"
value="3"
id="sliderSize"
/>
</div>
<div class="text-div">
Initial Index :<input
class="text-span"
type="text"
value="0"
id="initialIndex"
/>
</div>
<div class="button-apply">
<input type="button" value="Apply" onclick="applyChanges()" />
</div>
</div>
<script src="./slider.js"></script>
<a
href="https://stackoverflow.com/users/7430694/chandrakant-thakkar"
style="position: absolute;top: 87%;left: 77%;"
target="_blank"
>
<img
src="https://stackoverflow.com/users/flair/7430694.png"
width="208"
height="58"
alt="profile for Chandrakant Thakkar at Stack Overflow, Q&amp;A for professional and enthusiast programmers"
title="profile for Chandrakant Thakkar at Stack Overflow, Q&amp;A for professional and enthusiast programmers"
/>
</a>
</div>
</body>
</html>
MIT License
Copyright (c) [2020] [Chandrakant Thakkar]
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
const getDataValue = data => {
if (data != null && typeof data == "object") {
return data.data;
} else {
return data;
}
};
const getTranslation = transform => {
// Create a dummy g for calculation purposes only. This will never
// be appended to the DOM and will be discarded once this function
// returns.
var g = document.createElementNS("http://www.w3.org/2000/svg", "g");
// Set the transform attribute to the provided string value.
g.setAttributeNS(null, "transform", transform);
// consolidate the SVGTransformList containing all transformations
// to a single SVGTransform of type SVG_TRANSFORM_MATRIX and get
// its SVGMatrix.
var matrix = g.transform.baseVal.consolidate().matrix;
// As per definition values e and f are the ones for the translation.
return [matrix.e, matrix.f];
};
function inverse() {
var rangeDiffOriginal = xScale.range()[1] - xScale.range()[0];
var index = 0;
if (rangeDiffOriginal >= 0) {
index = Math.floor(
(arguments[0] - xScale.paddingOuter() - xScale.range()[0]) /
xScale.bandwidth()
);
} else {
index = Math.floor(
(xScale.range()[0] - (arguments[0] + xScale.paddingOuter())) /
xScale.bandwidth()
);
}
if (index < 0 || index >= xScale.domain().length) {
return "";
} else {
return xScale.domain()[index];
}
}
function onBrushEnd(data) {
if (!event || !event.x) return;
else {
const x = d3
.select("#brushContainer")
.select(".selection")
.node()
.getAttribute("x");
let currentXPosition = parseFloat(x);
const indexOfEndValue = rangeValues.indexOf(inverse(currentXPosition));
const nextIndexOfPoint =
indexOfEndValue == 0
? indexOfEndValue
: Math.floor(indexOfEndValue / stepSize) == 0
? 0
: Math.floor(indexOfEndValue / stepSize) * stepSize;
const x1 = xScale(getDataValue(rangeValues[nextIndexOfPoint]));
let x2 = xScale(getDataValue(rangeValues[nextIndexOfPoint + sliderSize]));
if (nextIndexOfPoint + sliderSize > rangeValues.length - 1) {
x2 = xScale(
getDataValue(
rangeValues[
nextIndexOfPoint + sliderSize > rangeValues.length - 1
? rangeValues.length - 1
: nextIndexOfPoint + sliderSize
]
)
);
x2 = x2 + xScale.bandwidth();
}
d3.select(this)
.transition()
.call(brush.move, [x1, x2]);
const x1Value = inverse(x1);
const x2Value = inverse(x2 - 1);
d3.select("#labelRef")
.select("text")
.text(x1Value == x2Value ? x1Value : x1Value + "-" + x2Value);
console.log("start Point:", x1Value + "\tEnd Point:", x2Value);
}
}
function onBrushMove(data) {
data = data == null ? {} : data;
const x = d3
.select("#brushContainer")
.select(".selection")
.node()
.getAttribute("x");
data.x = x;
d3.select("#arrowContainer").attr("transform", `translate(${data.x},0)`);
d3.select("#labelRef").attr(
"transform",
`translate(${parseFloat(data.x) +
(arrowCoOrdinates.x2 - arrowCoOrdinates.x1) / 2},0)`
);
const currentXPosition = parseFloat(data.x);
const indexOfEndValue = rangeValues.indexOf(inverse(currentXPosition));
const nextIndexOfPoint =
indexOfEndValue == 0
? indexOfEndValue
: Math.floor(indexOfEndValue / stepSize) == 0
? 0
: Math.floor(indexOfEndValue / stepSize) * stepSize;
const x1 = xScale(getDataValue(rangeValues[nextIndexOfPoint]));
let x2 = xScale(getDataValue(rangeValues[nextIndexOfPoint + sliderSize]));
if (nextIndexOfPoint + sliderSize > rangeValues.length - 1) {
x2 = xScale(
getDataValue(
rangeValues[
nextIndexOfPoint + sliderSize > rangeValues.length - 1
? rangeValues.length - 1
: nextIndexOfPoint + sliderSize
]
)
);
x2 = x2 + xScale.bandwidth();
}
const x1Value = inverse(x1);
const x2Value = inverse(x2 - 1);
d3.select("#labelRef")
.select("text")
.text(x1Value == x2Value ? x1Value : x1Value + "-" + x2Value);
}
const rangeValues = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
width = 800,
height = 100,
arrowFillColor = "orange",
arrowHeight = 10,
arrowWidth = 9,
margin = { left: 50, right: 50, top: 0, bottom: 0 },
arrowLabelFormatter = null;
const xScale = d3
.scaleBand()
.domain(rangeValues)
.range([0, width - (margin.left + margin.right)]);
d3.select("#svg")
.attr("width", width)
.attr("height", height);
d3.select(".axisContainer").attr(
"transform",
`translate(${margin.left},${height / 2})`
);
let index = parseInt(d3.select("#initialIndex").node().value),
stepSize = parseInt(d3.select("#stepSize").node().value),
sliderSize = parseInt(d3.select("#sliderSize").node().value);
let arrowCoOrdinates = {
x1: xScale(rangeValues[0]),
y1: 0,
x2: xScale(getDataValue(rangeValues[0 + sliderSize])),
y2: 0
};
const brush = d3
.brushX()
.extent([
[0, -(arrowHeight / 2)],
[width - (margin.left + margin.right), arrowHeight]
])
.on("end", onBrushEnd)
.on("brush", onBrushMove);
function drawRangeSlider() {
(index = parseInt(d3.select("#initialIndex").node().value)),
(stepSize = parseInt(d3.select("#stepSize").node().value)),
(sliderSize = parseInt(d3.select("#sliderSize").node().value));
arrowCoOrdinates = {
x1: xScale(rangeValues[0]),
y1: 0,
x2: xScale(getDataValue(rangeValues[0 + sliderSize])),
y2: 0
};
//CBT:Ticks STart
d3.select("#axesContainer").html("");
let fontHeight;
rangeValues.forEach((data, index) => {
let values = data;
if (data != null && typeof data == "object") {
if (data.displayName) {
values = data.displayName;
} else if (
data.formatter != null &&
typeof data.formatter == "function"
) {
values = data.formatter(data.data);
} else {
values = data.data;
}
}
const ticksG = d3
.select("#axesContainer")
.append("g")
.attr("class", "ticks")
.attr("transform", `translate(${xScale(getDataValue(data))},0)`);
let wrappedTexts = [];
if (values.toString().split("%^^%").length > 1) {
const textData = values.split("%^^%");
const textG = ticksG.append("text").style("text-anchor", "middle");
wrappedTexts = textData.map(textD => {
const tspan = textG
.append("tspan")
.classed("ticks-text", true)
.style("font-size", "var(--small-text-size)")
.attr("x", xScale.bandwidth() / 2)
.style("fill", "#808080")
.text(textD);
return tspan;
});
fontHeight = wrappedTexts[0].node().getBBox().height;
} else {
const text = ticksG
.append("text")
.classed("ticks-text", true)
.style("text-anchor", "middle")
.style("font-size", "var(--small-text-size)")
.attr("x", xScale.bandwidth() / 2)
.style("fill", "#808080")
.text(values);
fontHeight = d3
.select("#axesContainer")
.select(".ticks text.ticks-text")
.node()
.getBBox().height;
}
if (wrappedTexts.length > 0) {
let yPosition = 0;
wrappedTexts.forEach(textPoint => {
textPoint.attr("y", yPosition);
yPosition = yPosition + fontHeight;
});
}
//CBT:tick line start
ticksG
.append("line")
.attr("x1", 0)
.attr("y1", -fontHeight)
.attr("x2", 0)
.attr("y2", -fontHeight + 4)
.style("stroke", "#C4C4C4");
if (index == rangeValues.length - 1) {
ticksG
.append("line")
.attr("x1", xScale.bandwidth() - 1)
.attr("y1", -fontHeight)
.attr("x2", xScale.bandwidth() - 1)
.attr("y2", -fontHeight + 4)
.style("stroke", "#C4C4C4");
}
//CBT:tick line end
});
//CBT:put axis down as font size
d3.select("#axesContainer").attr("transform", `translate(0,${fontHeight})`);
//CBT:add ticks line
d3.select("#axesContainer")
.append("line")
.attr("x1", xScale(getDataValue(rangeValues[0])))
.attr("y1", -fontHeight)
.attr(
"x2",
xScale(getDataValue(rangeValues[rangeValues.length - 1])) +
xScale.bandwidth()
)
.attr("y2", -fontHeight)
.style("stroke", "#C4C4C4");
//CBT:Hide Overlapping Ticks text
var selectedTextWidth = "";
let previousElement = null;
d3.select("#axesContainer")
.selectAll(".ticks")
.each(function(text, i) {
var that = this;
let textWidth = d3
.select(that)
.select(".ticks-text")
.node()
.getBBox().width;
d3.select(that)
.select(".ticks-text")
.style("display", "block");
var position = getTranslation(that.getAttribute("transform"));
if (
i == 0 ||
d3
.select(that)
.select("text tspan")
.empty() == false
) {
selectedTextWidth = position[0] + textWidth;
if (
previousElement != null &&
d3
.select(previousElement)
.select("text tspan")
.empty() == true
) {
//CBT:hide previous ticks text if it doesn't contain tspan and it's text overlapped current text
const positionPre = Utils.getTranslation(
previousElement.getAttribute("transform")
);
const textWidthPre = d3
.select(previousElement)
.select(".ticks-text")
.node()
.getBBox().width;
if (positionPre[0] + textWidthPre + 5 > position[0]) {
d3.select(previousElement)
.select(".ticks-text")
.style("display", "none");
}
}
previousElement = that;
} else {
var currentTextStart = position[0];
if (
currentTextStart <= selectedTextWidth + 10 ||
currentTextStart > width
) {
d3.select(that)
.select(".ticks-text")
.style("display", "none");
} else {
selectedTextWidth = position[0] + textWidth;
previousElement = that;
}
}
});
//CBT:Ticks End
//CBT:arrow start
d3.select("#arrowRef").html("");
const x11 = arrowCoOrdinates.x1 + arrowWidth;
const y11 = arrowCoOrdinates.y1 - arrowHeight / 2;
const x12 = x11;
const y12 = y11 + arrowHeight;
const x21 = arrowCoOrdinates.x2 - arrowWidth;
const y21 = arrowCoOrdinates.y2 - arrowHeight / 2;
const x22 = x21;
const y22 = y21 + arrowHeight;
const lineX1 = arrowCoOrdinates.x1 + arrowWidth;
const lineX2 = arrowCoOrdinates.x2 - arrowWidth;
d3.select("#arrowRef")
.attr("class", "range-arrow-slider ")
.attr("x", arrowCoOrdinates.x1)
.append("path")
.attr(
"d",
`M${arrowCoOrdinates.x1} ${arrowCoOrdinates.y1} L${x11} ${y11} L${x12} ${y12} L${arrowCoOrdinates.x1} ${arrowCoOrdinates.y1} Z`
)
.style("fill", arrowFillColor);
d3.select("#arrowRef")
.append("path")
.attr(
"d",
`M${arrowCoOrdinates.x2} ${arrowCoOrdinates.y2} L${x21} ${y21} L${x22} ${y22} L${arrowCoOrdinates.x2} ${arrowCoOrdinates.y2} Z`
)
.style("fill", arrowFillColor);
d3.select("#arrowRef")
.append("line")
.attr("x1", lineX1)
.attr("y1", arrowCoOrdinates.y1)
.attr("x2", lineX2)
.attr("y2", arrowCoOrdinates.y1)
.style("stroke-width", 1)
.style("stroke", arrowFillColor);
const arrowRect = d3
.select("#arrowRef")
.append("rect")
.attr("x", arrowCoOrdinates.x1)
.attr("y", y11)
.attr("width", arrowCoOrdinates.x2 - arrowCoOrdinates.x1)
.attr("height", arrowHeight)
.style("fill", "transparent");
//CBT:Arrow End
//CBT:Brush STart
const scaleBandWidth = xScale.bandwidth() / 2;
d3.select("#brushContainer").html("");
const brushG = d3.select("#brushContainer");
const brushSelection = brushG
.insert("g")
.attr("class", "brush")
.attr("id", d => {
return `brush-1`;
});
brush(brushSelection);
const x1 = xScale(getDataValue(rangeValues[index]));
let x2 = xScale(getDataValue(rangeValues[index + sliderSize]));
//CBT:this is for default index is greater than data value's length
if (index + sliderSize > rangeValues.length - 1) {
x2 = width - (margin.left + margin.right);
}
brush.move(brushSelection, [x1, x2]);
d3.select("#brushContainer")
.select(".overlay")
.attr("pointer-events", "none");
d3.select("#brushContainer")
.select(".selection")
.style("fill", "transparent")
.style("stroke", "transparent");
d3.select("#brushContainer")
.selectAll(".handle")
.style("pointer-events", "none");
//CBT:Brush ENd
}
drawRangeSlider();
function applyChanges() {
drawRangeSlider();
}
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