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149 lines
4.4 KiB
149 lines
4.4 KiB
'use strict'; |
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exports.type = 'perItem'; |
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exports.active = true; |
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exports.description = 'converts basic shapes to more compact path form'; |
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exports.params = { |
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convertArcs: false |
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}; |
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var none = { value: 0 }, |
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regNumber = /[-+]?(?:\d*\.\d+|\d+\.?)(?:[eE][-+]?\d+)?/g; |
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/** |
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* Converts basic shape to more compact path. |
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* It also allows further optimizations like |
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* combining paths with similar attributes. |
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* |
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* @see http://www.w3.org/TR/SVG/shapes.html |
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* |
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* @param {Object} item current iteration item |
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* @param {Object} params plugin params |
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* @return {Boolean} if false, item will be filtered out |
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* |
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* @author Lev Solntsev |
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*/ |
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exports.fn = function(item, params) { |
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var convertArcs = params && params.convertArcs; |
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if ( |
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item.isElem('rect') && |
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item.hasAttr('width') && |
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item.hasAttr('height') && |
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!item.hasAttr('rx') && |
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!item.hasAttr('ry') |
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) { |
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var x = +(item.attr('x') || none).value, |
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y = +(item.attr('y') || none).value, |
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width = +item.attr('width').value, |
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height = +item.attr('height').value; |
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// Values like '100%' compute to NaN, thus running after |
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// cleanupNumericValues when 'px' units has already been removed. |
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// TODO: Calculate sizes from % and non-px units if possible. |
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if (isNaN(x - y + width - height)) return; |
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var pathData = |
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'M' + x + ' ' + y + |
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'H' + (x + width) + |
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'V' + (y + height) + |
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'H' + x + |
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'z'; |
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item.addAttr({ |
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name: 'd', |
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value: pathData, |
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prefix: '', |
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local: 'd' |
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}); |
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item.renameElem('path') |
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.removeAttr(['x', 'y', 'width', 'height']); |
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} else if (item.isElem('line')) { |
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var x1 = +(item.attr('x1') || none).value, |
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y1 = +(item.attr('y1') || none).value, |
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x2 = +(item.attr('x2') || none).value, |
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y2 = +(item.attr('y2') || none).value; |
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if (isNaN(x1 - y1 + x2 - y2)) return; |
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item.addAttr({ |
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name: 'd', |
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value: 'M' + x1 + ' ' + y1 + 'L' + x2 + ' ' + y2, |
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prefix: '', |
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local: 'd' |
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}); |
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item.renameElem('path') |
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.removeAttr(['x1', 'y1', 'x2', 'y2']); |
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} else if (( |
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item.isElem('polyline') || |
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item.isElem('polygon') |
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) && |
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item.hasAttr('points') |
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) { |
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var coords = (item.attr('points').value.match(regNumber) || []).map(Number); |
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if (coords.length < 4) return false; |
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item.addAttr({ |
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name: 'd', |
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value: 'M' + coords.slice(0,2).join(' ') + |
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'L' + coords.slice(2).join(' ') + |
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(item.isElem('polygon') ? 'z' : ''), |
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prefix: '', |
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local: 'd' |
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}); |
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item.renameElem('path') |
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.removeAttr('points'); |
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} else if (item.isElem('circle') && convertArcs) { |
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var cx = +(item.attr('cx') || none).value; |
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var cy = +(item.attr('cy') || none).value; |
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var r = +(item.attr('r') || none).value; |
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if (isNaN(cx - cy + r)) { |
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return; |
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} |
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var cPathData = |
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'M' + cx + ' ' + (cy - r) + |
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'A' + r + ' ' + r + ' 0 1 0 ' + cx + ' ' + (cy + r) + |
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'A' + r + ' ' + r + ' 0 1 0 ' + cx + ' ' + (cy - r) + |
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'Z'; |
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item.addAttr({ |
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name: 'd', |
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value: cPathData, |
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prefix: '', |
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local: 'd', |
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}); |
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item.renameElem('path').removeAttr(['cx', 'cy', 'r']); |
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} else if (item.isElem('ellipse') && convertArcs) { |
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var ecx = +(item.attr('cx') || none).value; |
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var ecy = +(item.attr('cy') || none).value; |
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var rx = +(item.attr('rx') || none).value; |
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var ry = +(item.attr('ry') || none).value; |
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if (isNaN(ecx - ecy + rx - ry)) { |
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return; |
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} |
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var ePathData = |
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'M' + ecx + ' ' + (ecy - ry) + |
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'A' + rx + ' ' + ry + ' 0 1 0 ' + ecx + ' ' + (ecy + ry) + |
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'A' + rx + ' ' + ry + ' 0 1 0 ' + ecx + ' ' + (ecy - ry) + |
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'Z'; |
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item.addAttr({ |
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name: 'd', |
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value: ePathData, |
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prefix: '', |
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local: 'd', |
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}); |
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item.renameElem('path').removeAttr(['cx', 'cy', 'rx', 'ry']); |
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} |
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};
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