This is an example of the power of the D3 library and how you can use the drag behavior of D3 to control the position and shape of the SVG element.
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| var w = 750, | |
| h = 450, | |
| r = 120; | |
| var isXChecked = true, | |
| isYChecked = true; | |
| var width = 300, | |
| height = 200, | |
| dragbarw = 10; | |
| var drag = d3.behavior.drag() | |
| .origin(function(d) { return d; }) | |
| .on("drag", dragmove); | |
| var dragright = d3.behavior.drag() | |
| .origin(Object) | |
| .on("drag", rdragresize); | |
| var dragleft = d3.behavior.drag() | |
| .origin(Object) | |
| .on("drag", ldragresize); | |
| var dragtop = d3.behavior.drag() | |
| .origin(Object) | |
| .on("drag", tdragresize); | |
| var dragbottom = d3.behavior.drag() | |
| .origin(Object) | |
| .on("drag", bdragresize); | |
| var dragtopleft = d3.behavior.drag() | |
| .origin(Object) | |
| .on('drag', tldragresize); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", w) | |
| .attr("height", h) | |
| var newg = svg.append("g") | |
| .data([{x: width / 2, y: height / 2}]); | |
| var dragrect = newg.append("rect") | |
| .attr("id", "active") | |
| .attr("x", function(d) { return d.x; }) | |
| .attr("y", function(d) { return d.y; }) | |
| .attr("height", height) | |
| .attr("width", width) | |
| .attr("fill-opacity", .5) | |
| .attr("cursor", "move") | |
| .call(drag); | |
| var dragbarleft = newg.append("rect") | |
| .attr("x", function(d) { return d.x; }) | |
| .attr("y", function(d) { return d.y + dragbarw; }) | |
| .attr("height", height - 2 * dragbarw) | |
| .attr("id", "dragleft") | |
| .attr("width", dragbarw) | |
| .attr("fill", "lightblue") | |
| .attr("fill-opacity", .5) | |
| .attr("cursor", "ew-resize") | |
| .call(dragleft); | |
| var dragbarright = newg.append("rect") | |
| .attr("x", function(d) { return d.x + width - dragbarw; }) | |
| .attr("y", function(d) { return d.y + dragbarw; }) | |
| .attr("id", "dragright") | |
| .attr("height", height - 2 * dragbarw) | |
| .attr("width", dragbarw) | |
| .attr("fill", "lightblue") | |
| .attr("fill-opacity", .5) | |
| .attr("cursor", "ew-resize") | |
| .call(dragright); | |
| var dragbartop = newg.append("rect") | |
| .attr("x", function(d) { return d.x + dragbarw; }) | |
| .attr("y", function(d) { return d.y; }) | |
| .attr("height", dragbarw) | |
| .attr("id", "dragleft") | |
| .attr("width", width - 2 * dragbarw) | |
| .attr("fill", "lightgreen") | |
| .attr("fill-opacity", .5) | |
| .attr("cursor", "ns-resize") | |
| .call(dragtop); | |
| var dragbarbottom = newg.append("rect") | |
| .attr("x", function(d) { return d.x + dragbarw; }) | |
| .attr("y", function(d) { return d.y + height - dragbarw; }) | |
| .attr("id", "dragright") | |
| .attr("height", dragbarw) | |
| .attr("width", width - 2 * dragbarw) | |
| .attr("fill", "lightgreen") | |
| .attr("fill-opacity", .5) | |
| .attr("cursor", "ns-resize") | |
| .call(dragbottom); | |
| var dragbartopleft = newg.append("rect") | |
| .attr("x", function(d) { return d.x; }) | |
| .attr("y", function(d) { return d.y; }) | |
| .attr("height", dragbarw) | |
| .attr("width", dragbarw) | |
| .attr("fill", "purple") | |
| .attr("fill-opacity", .5) | |
| .attr("cursor", "nwse-resize") | |
| .call(dragtopleft); | |
| var dragbartopright = newg.append("rect") | |
| .attr("x", function(d) { return d.x + width - dragbarw; }) | |
| .attr("y", function(d) { return d.y; }) | |
| .attr("height", dragbarw) | |
| .attr("width", dragbarw) | |
| .attr("fill", "purple") | |
| .attr("fill-opacity", .5) | |
| .attr("cursor", "nesw-resize"); | |
| var dragbarbottomleft = newg.append("rect") | |
| .attr("x", function(d) { return d.x; }) | |
| .attr("y", function(d) { return d.y + height - dragbarw; }) | |
| .attr("height", dragbarw) | |
| .attr("width", dragbarw) | |
| .attr("fill", "purple") | |
| .attr("fill-opacity", .5) | |
| .attr("cursor", "nesw-resize"); | |
| var dragbarbottomright = newg.append("rect") | |
| .attr("x", function(d) { return d.x + width - dragbarw; }) | |
| .attr("y", function(d) { return d.y + height - dragbarw; }) | |
| .attr("height", dragbarw) | |
| .attr("width", dragbarw) | |
| .attr("fill", "purple") | |
| .attr("fill-opacity", .5) | |
| .attr("cursor", "nwse-resize"); | |
| function dragmove(d) { | |
| if (isXChecked) { | |
| dragrect | |
| .attr("x", d.x = Math.max(0, Math.min(w - width, d3.event.x))) | |
| dragbarleft | |
| .attr("x", function(d) { return d.x; }) | |
| dragbarright | |
| .attr("x", function(d) { return d.x + width - dragbarw; }) | |
| dragbartop | |
| .attr("x", function(d) { return d.x + dragbarw; }) | |
| dragbarbottom | |
| .attr("x", function(d) { return d.x + dragbarw; }) | |
| dragbartopleft | |
| .attr("x", function(d) { return d.x; }); | |
| dragbarbottomleft | |
| .attr("x", function(d) { return d.x; }); | |
| dragbartopright | |
| .attr("x", function(d) { return d.x + width - dragbarw; }); | |
| dragbarbottomright | |
| .attr("x", function(d) { return d.x + width - dragbarw; }); | |
| } | |
| if (isYChecked) { | |
| dragrect | |
| .attr("y", d.y = Math.max(0, Math.min(h - height, d3.event.y))); | |
| dragbarleft | |
| .attr("y", function(d) { return d.y + dragbarw; }); | |
| dragbarright | |
| .attr("y", function(d) { return d.y + dragbarw; }); | |
| dragbartop | |
| .attr("y", function(d) { return d.y; }); | |
| dragbarbottom | |
| .attr("y", function(d) { return d.y + height - dragbarw; }); | |
| dragbartopleft | |
| .attr("y", function(d) { return d.y; }); | |
| dragbarbottomleft | |
| .attr("y", function(d) { return d.y + height - dragbarw; }); | |
| dragbartopright | |
| .attr("y", function(d) { return d.y; }); | |
| dragbarbottomright | |
| .attr("y", function(d) { return d.y + height - dragbarw; }); | |
| } | |
| } | |
| function ldragresize(d) { | |
| if (isXChecked) { | |
| var oldx = d.x; | |
| //Max x on the right is x + width - dragbarw | |
| //Max x on the left is 0 - (dragbarw/2) | |
| d.x = Math.max(0, Math.min(d.x + width - dragbarw, d3.event.x)); | |
| width = width + (oldx - d.x); | |
| dragbarleft | |
| .attr("x", function(d) { return d.x; }); | |
| dragrect | |
| .attr("x", function(d) { return d.x; }) | |
| .attr("width", width); | |
| dragbartop | |
| .attr("x", function(d) { return d.x + dragbarw; }) | |
| .attr("width", width - 2 * dragbarw) | |
| dragbarbottom | |
| .attr("x", function(d) { return d.x + dragbarw; }) | |
| .attr("width", width - 2 * dragbarw) | |
| } | |
| } | |
| function rdragresize(d) { | |
| if (isXChecked) { | |
| //Max x on the left is x - width | |
| //Max x on the right is width of screen + (dragbarw/2) | |
| var dragx = Math.max(d.x + dragbarw, Math.min(w, d.x + width + d3.event.dx)); | |
| //recalculate width | |
| width = dragx - d.x; | |
| //move the right drag handle | |
| dragbarright | |
| .attr("x", function(d) { return dragx - dragbarw }); | |
| //resize the drag rectangle | |
| //as we are only resizing from the right, the x coordinate does not need to change | |
| dragrect | |
| .attr("width", width); | |
| dragbartop | |
| .attr("width", width - 2 * dragbarw) | |
| dragbarbottom | |
| .attr("width", width - 2 * dragbarw) | |
| } | |
| } | |
| function tdragresize(d) { | |
| if (isYChecked) { | |
| var oldy = d.y; | |
| //Max x on the right is x + width - dragbarw | |
| //Max x on the left is 0 - (dragbarw/2) | |
| d.y = Math.max(0, Math.min(d.y + height - dragbarw, d3.event.y)); | |
| height = height + (oldy - d.y); | |
| dragbartop | |
| .attr("y", function(d) { return d.y; }); | |
| dragrect | |
| .attr("y", function(d) { return d.y; }) | |
| .attr("height", height); | |
| dragbarleft | |
| .attr("y", function(d) { return d.y + dragbarw; }) | |
| .attr("height", height - 2 * dragbarw); | |
| dragbarright | |
| .attr("y", function(d) { return d.y + dragbarw; }) | |
| .attr("height", height - 2 * dragbarw); | |
| } | |
| } | |
| function bdragresize(d) { | |
| if (isYChecked) { | |
| //Max x on the left is x - width | |
| //Max x on the right is width of screen + (dragbarw/2) | |
| var dragy = Math.max(d.y + (dragbarw), Math.min(h, d.y + height + d3.event.dy)); | |
| //recalculate width | |
| height = dragy - d.y; | |
| //move the right drag handle | |
| dragbarbottom | |
| .attr("y", function(d) { return dragy - (dragbarw) }); | |
| //resize the drag rectangle | |
| //as we are only resizing from the right, the x coordinate does not need to change | |
| dragrect | |
| .attr("height", height); | |
| dragbarleft | |
| .attr("height", height - 2 * dragbarw); | |
| dragbarright | |
| .attr("height", height - 2 * dragbarw); | |
| } | |
| } | |
| function ldragresize(d) { | |
| if (isXChecked) { | |
| var oldx = d.x; | |
| //Max x on the right is x + width - dragbarw | |
| //Max x on the left is 0 - (dragbarw/2) | |
| d.x = Math.max(0, Math.min(d.x + width - dragbarw, d3.event.x)); | |
| width = width + (oldx - d.x); | |
| dragbarleft | |
| .attr("x", function(d) { return d.x; }); | |
| dragrect | |
| .attr("x", function(d) { return d.x; }) | |
| .attr("width", width); | |
| dragbartop | |
| .attr("x", function(d) { return d.x + dragbarw; }) | |
| .attr("width", width - 2 * dragbarw) | |
| dragbarbottom | |
| .attr("x", function(d) { return d.x + dragbarw; }) | |
| .attr("width", width - 2 * dragbarw) | |
| } | |
| } | |
| function tldragresize(d) { | |
| if (isXChecked && isYChecked) { | |
| var oldx = d.x; | |
| var oldy = d.y; | |
| d.x = Math.max(0, Math.min(d.x + width - dragbarw, d3.event.x)); | |
| d.y = Math.max(0, Math.min(d.y + height - dragbarw, d3.event.y)); | |
| width = width + (oldx - d.x); | |
| height = height + (oldy - d.y); | |
| dragbartopleft | |
| .attr('x', function(d) { return d.x; }) | |
| .attr('y', function(d) {return d.y; }); | |
| dragbarleft | |
| .attr("x", function(d) { return d.x; }) | |
| .attr("y", function(d) { return d.y + dragbarw; }) | |
| .attr("height", height - 2 * dragbarw); | |
| dragbartop | |
| .attr("y", function(d) { return d.y; }) | |
| .attr("x", function(d) { return d.x + dragbarw; }) | |
| .attr("width", width - 2 * dragbarw); | |
| dragrect | |
| .attr("x", function(d) { return d.x; }) | |
| .attr("width", width) | |
| .attr("y", function(d) { return d.y; }) | |
| .attr("height", height); | |
| dragbarbottom | |
| .attr("x", function(d) { return d.x + dragbarw; }) | |
| .attr("width", width - 2 * dragbarw); | |
| dragbarright | |
| .attr("y", function(d) { return d.y + dragbarw; }) | |
| .attr("height", height - 2 * dragbarw); | |
| dragbartopright | |
| .attr('y', function(d) { return d.y; }); | |
| dragbarbottomleft | |
| .attr('x', function(d) { return d.x; }); | |
| } | |
| } | |
| function bldragresize(d) { | |
| if (isXChecked && isYChecked) { | |
| var oldx = d.x; | |
| var oldy = d.y; | |
| d.x = Math.max(0, Math.min(d.x + width - dragbarw, d3.event.x)); | |
| d.y = Math.max(0, Math.min(d.y + height - dragbarw, d3.event.y)); | |
| width = width + (oldx - d.x); | |
| height = height + (oldy - d.y); | |
| dragbarbottomleft | |
| .attr('x', function(d) { return d.x; }) | |
| .attr('y', function(d) {return d.y; }); | |
| dragbarleft | |
| .attr("x", function(d) { return d.x; }) | |
| .attr("y", function(d) { return d.y + dragbarw; }) | |
| .attr("height", height - 2 * dragbarw); | |
| dragbartop | |
| .attr("y", function(d) { return d.y; }) | |
| .attr("x", function(d) { return d.x + dragbarw; }) | |
| .attr("width", width - 2 * dragbarw); | |
| dragrect | |
| .attr("x", function(d) { return d.x; }) | |
| .attr("width", width) | |
| .attr("y", function(d) { return d.y; }) | |
| .attr("height", height); | |
| dragbarbottom | |
| .attr("x", function(d) { return d.x + dragbarw; }) | |
| .attr("width", width - 2 * dragbarw); | |
| dragbarright | |
| .attr("y", function(d) { return d.y + dragbarw; }) | |
| .attr("height", height - 2 * dragbarw); | |
| dragbartopright | |
| .attr('y', function(d) { return d.y; }); | |
| dragbarbottomleft | |
| .attr('x', function(d) { return d.x; }); | |
| } | |
| } |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/> | |
| <style type="text/css"> | |
| svg { | |
| border: solid 1px #aaa; | |
| } | |
| #checks { | |
| margin: 10px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script type="text/javascript" src="http://mbostock.github.com/d3/d3.js"></script> | |
| <script type="text/javascript" src="dragrect.js"></script> | |
| <script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"></script> | |
| <div id="checks"> | |
| X-axis:<input type="checkbox" id="xChecked" checked/> | |
| Y-axis:<input type="checkbox" id="yChecked" checked/> | |
| </div> | |
| <script> | |
| $('#xChecked').click(function() { | |
| isXChecked = !isXChecked; | |
| dragbarleft | |
| .attr("fill-opacity", (isXChecked ? 0.5 : 0)) | |
| .attr("cursor", (isXChecked ? "ew-resize" : "move")); | |
| dragbarright | |
| .attr("fill-opacity", (isXChecked ? 0.5 : 0)) | |
| .attr("cursor", (isXChecked ? "ew-resize" : "move")); | |
| }); | |
| $('#yChecked').click(function() { | |
| isYChecked = !isYChecked; | |
| dragbartop | |
| .attr("fill-opacity", (isYChecked ? 0.5 : 0)) | |
| .attr("cursor", (isYChecked ? "ns-resize" : "move")); | |
| dragbarbottom | |
| .attr("fill-opacity", (isYChecked ? 0.5 : 0)) | |
| .attr("cursor", (isYChecked ? "ns-resize" : "move")); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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Nice attempt