Last active
April 12, 2018 11:58
-
-
Save jakosz/ce1e63d5149f64ac7ee9 to your computer and use it in GitHub Desktop.
Context menu for SVG elements
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE HTML> | |
| <meta charset='utf-8'> | |
| <style> | |
| body { | |
| background: rgb(200,200,200); | |
| } | |
| svg { | |
| margin: auto; | |
| display: block; | |
| background: white; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var mainw = 960, | |
| mainh = 500; | |
| function contextMenu() { | |
| var height, | |
| width, | |
| margin = 0.1, // fraction of width | |
| items = [], | |
| rescale = false, | |
| style = { | |
| 'rect': { | |
| 'mouseout': { | |
| 'fill': 'rgb(244,244,244)', | |
| 'stroke': 'white', | |
| 'stroke-width': '1px' | |
| }, | |
| 'mouseover': { | |
| 'fill': 'rgb(200,200,200)' | |
| } | |
| }, | |
| 'text': { | |
| 'fill': 'steelblue', | |
| 'font-size': '13' | |
| } | |
| }; | |
| function menu(x, y) { | |
| d3.select('.context-menu').remove(); | |
| scaleItems(); | |
| // Draw the menu | |
| d3.select('svg') | |
| .append('g').attr('class', 'context-menu') | |
| .selectAll('tmp') | |
| .data(items).enter() | |
| .append('g').attr('class', 'menu-entry') | |
| .style({'cursor': 'pointer'}) | |
| .on('mouseover', function(){ | |
| d3.select(this).select('rect').style(style.rect.mouseover) }) | |
| .on('mouseout', function(){ | |
| d3.select(this).select('rect').style(style.rect.mouseout) }); | |
| d3.selectAll('.menu-entry') | |
| .append('rect') | |
| .attr('x', x) | |
| .attr('y', function(d, i){ return y + (i * height); }) | |
| .attr('width', width) | |
| .attr('height', height) | |
| .style(style.rect.mouseout); | |
| d3.selectAll('.menu-entry') | |
| .append('text') | |
| .text(function(d){ return d; }) | |
| .attr('x', x) | |
| .attr('y', function(d, i){ return y + (i * height); }) | |
| .attr('dy', height - margin / 2) | |
| .attr('dx', margin) | |
| .style(style.text); | |
| // Other interactions | |
| d3.select('body') | |
| .on('click', function() { | |
| d3.select('.context-menu').remove(); | |
| }); | |
| } | |
| menu.items = function(e) { | |
| if (!arguments.length) return items; | |
| for (i in arguments) items.push(arguments[i]); | |
| rescale = true; | |
| return menu; | |
| } | |
| // Automatically set width, height, and margin; | |
| function scaleItems() { | |
| if (rescale) { | |
| d3.select('svg').selectAll('tmp') | |
| .data(items).enter() | |
| .append('text') | |
| .text(function(d){ return d; }) | |
| .style(style.text) | |
| .attr('x', -1000) | |
| .attr('y', -1000) | |
| .attr('class', 'tmp'); | |
| var z = d3.selectAll('.tmp')[0] | |
| .map(function(x){ return x.getBBox(); }); | |
| width = d3.max(z.map(function(x){ return x.width; })); | |
| margin = margin * width; | |
| width = width + 2 * margin; | |
| height = d3.max(z.map(function(x){ return x.height + margin / 2; })); | |
| // cleanup | |
| d3.selectAll('.tmp').remove(); | |
| rescale = false; | |
| } | |
| } | |
| return menu; | |
| } | |
| d3.select('body').append('svg').attr('id', 'svg-main') | |
| .attr('width', mainw) | |
| .attr('height', mainh); | |
| var menu = contextMenu().items('first item', 'second option', 'whatever, man'); | |
| d3.select('svg').append('rect') | |
| .attr('x', mainw/2 - 30) | |
| .attr('y', mainh/2 - 30) | |
| .attr('width', 60) | |
| .attr('height', 60) | |
| .on('contextmenu', function(){ | |
| d3.event.preventDefault(); | |
| menu(d3.mouse(this)[0], d3.mouse(this)[1]); | |
| }); | |
| </script> | |
| </body> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment