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forked from Nohmapp's block: Color Selection Issue
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June 11, 2017 18:43
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Color Selection Issue
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| license: mit |
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <style> | |
| body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| const squareSize = 20, | |
| gridSize = 25, | |
| width = squareSize*gridSize, | |
| height = squareSize*gridSize; | |
| const svg = d3.select('body').append('svg') | |
| .attr('width', width) | |
| .attr('height', height) | |
| const graphic = { | |
| color: function(){ | |
| const hue = (Math.random()*230) + 135, | |
| saturation = (Math.random()*20) + 46, | |
| lum = (Math.random()*20) + 55; | |
| }, | |
| buildData:function(){ | |
| let result = []; | |
| for (let i = 0; i < gridSize; i++){ | |
| let row = []; | |
| for(let j =0; j < gridSize; j++){ | |
| row.push(Math.random().toFixed(1)) | |
| } | |
| result.push(row) | |
| } | |
| console.log(result) | |
| return result; | |
| }, | |
| buildGrid: function(data){ | |
| const update = svg.selectAll('g') | |
| .data(data) | |
| const enter = update.enter() | |
| .append('g') | |
| .attr('class', (d, i) => ("ger" + i)) | |
| .attr("transform", function(d, i) { | |
| return "translate(" + (i * squareSize) + ', ' + 0 + ")" }) | |
| update.merge(enter) | |
| .selectAll('rect') | |
| .data((d) => {return d}) | |
| .enter() | |
| .append('rect') | |
| .attr('class', 'square') | |
| .attr('y', (d, i) => {return i * squareSize}) | |
| .attr('width', (d) => {return squareSize}) | |
| .attr('height', (d) => {return squareSize}) | |
| .attr('fill', (d) => {return d3.hcl(200, 50, (d*150))}) | |
| .on('click', function (d) { | |
| //here's the problem | |
| //each of these log somehting differnet, I do not know what | |
| //is best for traversing the groups | |
| // console.log(d3.select('rect').node()) | |
| console.log(d3.select(this)) | |
| console.log('this is, ', this.parentNode, 'd is = ', d) | |
| // console.log(d3.select('rect')); | |
| var thissel = d3.select(this.parentNode) | |
| thissel.selectAll('rect').style('fill', 'red') | |
| //this line will convert the first square to red | |
| //despite where you click | |
| // d3.select(this.square).style('fill', 'red') | |
| //this line will log a d3 style selection | |
| //but is undefined | |
| }) | |
| const exit = update.exit().remove(); | |
| }, | |
| propogate: function(){ | |
| } | |
| } | |
| graphic.buildGrid(graphic.buildData()) | |
| </script> | |
| </body> |
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