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Tooltip That Doesn't Collide With Edges
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="https://d3js.org/d3.v3.min.js"></script> | |
| <script type="text/javascript" src='./tooltip.js'></script> | |
| <link rel="stylesheet" type="text/css" href="./styles.css"> | |
| </head> | |
| <body> | |
| <svg> | |
| </svg> | |
| </body> | |
| </html> |
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| html, body { | |
| height: 100%; | |
| width: 100%; | |
| } | |
| svg { | |
| height: 100%; | |
| width: 100%; | |
| } |
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| document.addEventListener('DOMContentLoaded', () => { | |
| makeToolTip(); | |
| }); | |
| function makeToolTip() { | |
| const svg = d3.select('svg'); | |
| const tooltip = d3.select('body').append('div') | |
| .attr('class', 'tooltip') | |
| .style('position', 'absolute') | |
| .style('z-index', '1'); | |
| tooltip.append('text') | |
| .text('tooltip') | |
| .attr('text-anchor', 'middle') | |
| .style('color', 'pink'); | |
| svg | |
| .on('mousemove', () => { | |
| moveToolTip(tooltip); | |
| }) | |
| .on('mouseout', () => { | |
| tooltip.style('display', 'none'); | |
| }); | |
| } | |
| function moveToolTip(tooltip) { | |
| const svg = d3.select('svg'); | |
| tooltip.style('display', 'unset'); | |
| const svgDimensions = svg.node().getBoundingClientRect(); | |
| const eventXRelToScroll = d3.event.pageX - window.scrollX; | |
| const eventYRelToScroll = d3.event.pageY - window.scrollY; | |
| let tipX = (eventXRelToScroll) + 15; | |
| let tipY = (eventYRelToScroll) + 10; | |
| const tooltipDimensions = tooltip.node().getBoundingClientRect(); | |
| tipX = (eventXRelToScroll + tooltipDimensions.width + 10 > svgDimensions.right) ? | |
| tipX - tooltipDimensions.width - 15 : tipX; | |
| tipY = (eventYRelToScroll + tooltipDimensions.height + 10 > svgDimensions.bottom) ? | |
| tipY - tooltipDimensions.height - 10 : tipY; | |
| tooltip | |
| .transition() | |
| .duration(10) | |
| .style('top', `${tipY}px`) | |
| .style('left', `${tipX}px`); | |
| } |
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