paradite · November 2, 2024 19:12
diff --git a/README.md b/README.md
diff --git a/app.js b/app.js
 var selectionRect = {
 	element			: null,
 	previousElement : null,
 	currentY		: 0,
 	currentX		: 0,
 	originX			: 0,
 	originY			: 0,
 	setElement: function(ele) {
 		this.previousElement = this.element;
 		this.element = ele;
 	},
 	getNewAttributes: function() {
 		var x = this.currentX<this.originX?this.currentX:this.originX;
 		var y = this.currentY<this.originY?this.currentY:this.originY;
 		var width = Math.abs(this.currentX - this.originX);
 		var height = Math.abs(this.currentY - this.originY);
 		return {
 	        x       : x,
 	        y       : y,
 	        width  	: width,
 	        height  : height
 		};
 	},
 	getCurrentAttributes: function() {
 		// use plus sign to convert string into number
 		var x = +this.element.attr("x");
 		var y = +this.element.attr("y");
 		var width = +this.element.attr("width");
 		var height = +this.element.attr("height");
 		return {
 			x1  : x,
 	        y1	: y,
 	        x2  : x + width,
 	        y2  : y + height
 		};
 	},
 	getCurrentAttributesAsText: function() {
 		var attrs = this.getCurrentAttributes();
 		return "x1: " + attrs.x1 + " x2: " + attrs.x2 + " y1: " + attrs.y1 + " y2: " + attrs.y2;
 	},
 	init: function(newX, newY) {
 		var rectElement = svg.append("rect")
 		    .attr({
 		        rx      : 4,
 		        ry      : 4,
 		        x       : 0,
 		        y       : 0,
 		        width   : 0,
 		        height  : 0
 		    })
 		    .classed("selection", true);
 	    this.setElement(rectElement);
 		this.originX = newX;
 		this.originY = newY;
 		this.update(newX, newY);
 	},
 	update: function(newX, newY) {
 		this.currentX = newX;
 		this.currentY = newY;
 		this.element.attr(this.getNewAttributes());
 	},
 	focus: function() {
        this.element
            .style("stroke", "#DE695B")
            .style("stroke-width", "2.5");
    },
    remove: function() {
    	this.element.remove();
    	this.element = null;
    },
    removePrevious: function() {
    	if(this.previousElement) {
    		this.previousElement.remove();
    	}
    }
 };

 var svg = d3.select("svg");
 var clickTime = d3.select("#clicktime");
 var attributesText = d3.select("#attributestext");

 function dragStart() {
 	console.log("dragStart");
    var p = d3.mouse(this);
    selectionRect.init(p[0], p[1]);
 	selectionRect.removePrevious();
 }

 function dragMove() {
 	console.log("dragMove");
 	var p = d3.mouse(this);
    selectionRect.update(p[0], p[1]);
    attributesText
    	.text(selectionRect.getCurrentAttributesAsText());
 }

 function dragEnd() {
 	console.log("dragEnd");
 	var finalAttributes = selectionRect.getCurrentAttributes();
 	console.dir(finalAttributes);
 	if(finalAttributes.x2 - finalAttributes.x1 > 1 && finalAttributes.y2 - finalAttributes.y1 > 1){
 		console.log("range selected");
 		// range selected
 		d3.event.sourceEvent.preventDefault();
 		selectionRect.focus();
 	} else {
 		console.log("single point");
        // single point selected
        selectionRect.remove();
        // trigger click event manually
        clicked();
    }
 }

 var dragBehavior = d3.behavior.drag()
    .on("drag", dragMove)
    .on("dragstart", dragStart)
    .on("dragend", dragEnd);

 svg.call(dragBehavior);

 function clicked() {
 	var d = new Date();
    clickTime
    	.text("Clicked at " + d.toTimeString().substr(0,8) + ":" + d.getMilliseconds());
 }

diff --git a/index.html b/index.html
 <!DOCTYPE html>
 <html>
 <head>
 	<title>d3.js range selection with drag</title>
 	<link rel="stylesheet" type="text/css" href="styles.css">
 </head>
 <body>
 <p id="clicktime" style="position:absolute; margin-left:20px; pointer-events: none;">Click Time</p>
 <p id="attributestext" style="position:absolute; margin-left:300px; pointer-events: none;">Attributes</p>
 <svg width="960" height="500"></svg>
 <script src="http://d3js.org/d3.v3.min.js"></script>
 <script src="app.js"></script>
 </body>
 </html>
diff --git a/LICENSE b/LICENSE
 MIT License

 Copyright (c) 2020 Zhu Liang

 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.
diff --git a/styles.css b/styles.css
 rect.selection {
  cursor: move !important;
  -webkit-touch-callout: none !important;
  -webkit-user-select: none !important;
  -khtml-user-select: none !important;
  -moz-user-select: none !important;
  -ms-user-select: none !important;
  user-select: none !important;
  stroke: #545454;
  stroke-width: 2px;
  stroke-opacity: 1;
  fill: white;
  fill-opacity: 0.5;
 }
diff --git a/styles.less b/styles.less
 @darkgrey: #878787;
 @selection-border: darken(@darkgrey, 20%);

 rect.selection {
    cursor                  : move !important;
    -webkit-touch-callout   : none !important;
    -webkit-user-select     : none !important;
    -khtml-user-select      : none !important;
    -moz-user-select        : none !important;
    -ms-user-select         : none !important;
    user-select             : none !important;
    stroke                  : @selection-border;
    stroke-width            : 2px;
    stroke-opacity          : 1;
    fill                    : white;
    fill-opacity            : 0.5;
 }
	var selectionRect = {
	element : null,
	previousElement : null,
	currentY : 0,
	currentX : 0,
	originX : 0,
	originY : 0,
	setElement: function(ele) {
	this.previousElement = this.element;
	this.element = ele;
	},
	getNewAttributes: function() {
	var x = this.currentX<this.originX?this.currentX:this.originX;
	var y = this.currentY<this.originY?this.currentY:this.originY;
	var width = Math.abs(this.currentX - this.originX);
	var height = Math.abs(this.currentY - this.originY);
	return {
	x : x,
	y : y,
	width : width,
	height : height
	};
	},
	getCurrentAttributes: function() {
	// use plus sign to convert string into number
	var x = +this.element.attr("x");
	var y = +this.element.attr("y");
	var width = +this.element.attr("width");
	var height = +this.element.attr("height");
	return {
	x1 : x,
	y1 : y,
	x2 : x + width,
	y2 : y + height
	};
	},
	getCurrentAttributesAsText: function() {
	var attrs = this.getCurrentAttributes();
	return "x1: " + attrs.x1 + " x2: " + attrs.x2 + " y1: " + attrs.y1 + " y2: " + attrs.y2;
	},
	init: function(newX, newY) {
	var rectElement = svg.append("rect")
	.attr({
	rx : 4,
	ry : 4,
	x : 0,
	y : 0,
	width : 0,
	height : 0
	})
	.classed("selection", true);
	this.setElement(rectElement);
	this.originX = newX;
	this.originY = newY;
	this.update(newX, newY);
	},
	update: function(newX, newY) {
	this.currentX = newX;
	this.currentY = newY;
	this.element.attr(this.getNewAttributes());
	},
	focus: function() {
	this.element
	.style("stroke", "#DE695B")
	.style("stroke-width", "2.5");
	},
	remove: function() {
	this.element.remove();
	this.element = null;
	},
	removePrevious: function() {
	if(this.previousElement) {
	this.previousElement.remove();
	}
	}
	};

	var svg = d3.select("svg");
	var clickTime = d3.select("#clicktime");
	var attributesText = d3.select("#attributestext");

	function dragStart() {
	console.log("dragStart");
	var p = d3.mouse(this);
	selectionRect.init(p[0], p[1]);
	selectionRect.removePrevious();
	}

	function dragMove() {
	console.log("dragMove");
	var p = d3.mouse(this);
	selectionRect.update(p[0], p[1]);
	attributesText
	.text(selectionRect.getCurrentAttributesAsText());
	}

	function dragEnd() {
	console.log("dragEnd");
	var finalAttributes = selectionRect.getCurrentAttributes();
	console.dir(finalAttributes);
	if(finalAttributes.x2 - finalAttributes.x1 > 1 && finalAttributes.y2 - finalAttributes.y1 > 1){
	console.log("range selected");
	// range selected
	d3.event.sourceEvent.preventDefault();
	selectionRect.focus();
	} else {
	console.log("single point");
	// single point selected
	selectionRect.remove();
	// trigger click event manually
	clicked();
	}
	}

	var dragBehavior = d3.behavior.drag()
	.on("drag", dragMove)
	.on("dragstart", dragStart)
	.on("dragend", dragEnd);

	svg.call(dragBehavior);

	function clicked() {
	var d = new Date();
	clickTime
	.text("Clicked at " + d.toTimeString().substr(0,8) + ":" + d.getMilliseconds());
	}
	<!DOCTYPE html>
	<html>
	<head>
	<title>d3.js range selection with drag</title>
	<link rel="stylesheet" type="text/css" href="styles.css">
	</head>
	<body>
	<p id="clicktime" style="position:absolute; margin-left:20px; pointer-events: none;">Click Time</p>
	<p id="attributestext" style="position:absolute; margin-left:300px; pointer-events: none;">Attributes</p>
	<svg width="960" height="500"></svg>
	<script src="http://d3js.org/d3.v3.min.js"></script>
	<script src="app.js"></script>
	</body>
	</html>
	MIT License

	Copyright (c) 2020 Zhu Liang

	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.
	rect.selection {
	cursor: move !important;
	-webkit-touch-callout: none !important;
	-webkit-user-select: none !important;
	-khtml-user-select: none !important;
	-moz-user-select: none !important;
	-ms-user-select: none !important;
	user-select: none !important;
	stroke: #545454;
	stroke-width: 2px;
	stroke-opacity: 1;
	fill: white;
	fill-opacity: 0.5;
	}
	@darkgrey: #878787;
	@selection-border: darken(@darkgrey, 20%);

	rect.selection {
	cursor : move !important;
	-webkit-touch-callout : none !important;
	-webkit-user-select : none !important;
	-khtml-user-select : none !important;
	-moz-user-select : none !important;
	-ms-user-select : none !important;
	user-select : none !important;
	stroke : @selection-border;
	stroke-width : 2px;
	stroke-opacity : 1;
	fill : white;
	fill-opacity : 0.5;
	}