820 lines
28 KiB
JavaScript
820 lines
28 KiB
JavaScript
/*globals $*/
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/*jslint vars: true, eqeq: true, continue: true*/
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/**
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* Recalculate.
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*
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* Licensed under the MIT License
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*
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*/
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// Dependencies:
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// 1) jquery
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// 2) jquery-svg.js
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// 3) svgedit.js
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// 4) browser.js
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// 5) math.js
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// 6) history.js
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// 7) units.js
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// 8) svgtransformlist.js
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// 9) svgutils.js
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// 10) coords.js
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var svgedit = svgedit || {};
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(function() {
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if (!svgedit.recalculate) {
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svgedit.recalculate = {};
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}
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var NS = svgedit.NS;
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var context_;
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// Function: svgedit.recalculate.init
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svgedit.recalculate.init = function(editorContext) {
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context_ = editorContext;
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};
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// Function: svgedit.recalculate.updateClipPath
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// Updates a <clipPath>s values based on the given translation of an element
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//
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// Parameters:
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// attr - The clip-path attribute value with the clipPath's ID
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// tx - The translation's x value
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// ty - The translation's y value
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svgedit.recalculate.updateClipPath = function(attr, tx, ty) {
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var path = getRefElem(attr).firstChild;
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var cp_xform = svgedit.transformlist.getTransformList(path);
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var newxlate = context_.getSVGRoot().createSVGTransform();
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newxlate.setTranslate(tx, ty);
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cp_xform.appendItem(newxlate);
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// Update clipPath's dimensions
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svgedit.recalculate.recalculateDimensions(path);
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};
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// Function: svgedit.recalculate.recalculateDimensions
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// Decides the course of action based on the element's transform list
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//
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// Parameters:
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// selected - The DOM element to recalculate
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//
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// Returns:
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// Undo command object with the resulting change
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svgedit.recalculate.recalculateDimensions = function(selected) {
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if (selected == null) {return null;}
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// Firefox Issue - 1081
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if (selected.nodeName == "svg" && navigator.userAgent.indexOf("Firefox/20") >= 0) {
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return null;
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}
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var svgroot = context_.getSVGRoot();
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var tlist = svgedit.transformlist.getTransformList(selected);
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var k;
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// remove any unnecessary transforms
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if (tlist && tlist.numberOfItems > 0) {
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k = tlist.numberOfItems;
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while (k--) {
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var xform = tlist.getItem(k);
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if (xform.type === 0) {
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tlist.removeItem(k);
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}
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// remove identity matrices
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else if (xform.type === 1) {
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if (svgedit.math.isIdentity(xform.matrix)) {
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tlist.removeItem(k);
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}
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}
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// remove zero-degree rotations
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else if (xform.type === 4) {
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if (xform.angle === 0) {
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tlist.removeItem(k);
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}
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}
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}
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// End here if all it has is a rotation
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if (tlist.numberOfItems === 1 &&
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svgedit.utilities.getRotationAngle(selected)) {return null;}
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}
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// if this element had no transforms, we are done
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if (!tlist || tlist.numberOfItems == 0) {
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// Chrome has a bug that requires clearing the attribute first.
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selected.setAttribute('transform', '');
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selected.removeAttribute('transform');
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return null;
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}
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// TODO: Make this work for more than 2
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if (tlist) {
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k = tlist.numberOfItems;
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var mxs = [];
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while (k--) {
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var xform = tlist.getItem(k);
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if (xform.type === 1) {
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mxs.push([xform.matrix, k]);
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} else if (mxs.length) {
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mxs = [];
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}
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}
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if (mxs.length === 2) {
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var m_new = svgroot.createSVGTransformFromMatrix(svgedit.math.matrixMultiply(mxs[1][0], mxs[0][0]));
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tlist.removeItem(mxs[0][1]);
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tlist.removeItem(mxs[1][1]);
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tlist.insertItemBefore(m_new, mxs[1][1]);
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}
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// combine matrix + translate
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k = tlist.numberOfItems;
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if (k >= 2 && tlist.getItem(k-2).type === 1 && tlist.getItem(k-1).type === 2) {
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var mt = svgroot.createSVGTransform();
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var m = svgedit.math.matrixMultiply(
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tlist.getItem(k-2).matrix,
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tlist.getItem(k-1).matrix);
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mt.setMatrix(m);
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tlist.removeItem(k-2);
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tlist.removeItem(k-2);
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tlist.appendItem(mt);
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}
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}
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// If it still has a single [M] or [R][M], return null too (prevents BatchCommand from being returned).
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switch ( selected.tagName ) {
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// Ignore these elements, as they can absorb the [M]
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case 'line':
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case 'polyline':
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case 'polygon':
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case 'path':
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break;
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default:
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if ((tlist.numberOfItems === 1 && tlist.getItem(0).type === 1) ||
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(tlist.numberOfItems === 2 && tlist.getItem(0).type === 1 && tlist.getItem(0).type === 4)) {
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return null;
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}
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}
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// Grouped SVG element
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var gsvg = $(selected).data('gsvg');
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// we know we have some transforms, so set up return variable
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var batchCmd = new svgedit.history.BatchCommand('Transform');
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// store initial values that will be affected by reducing the transform list
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var changes = {}, initial = null, attrs = [];
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switch (selected.tagName) {
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case 'line':
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attrs = ['x1', 'y1', 'x2', 'y2'];
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break;
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case 'circle':
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attrs = ['cx', 'cy', 'r'];
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break;
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case 'ellipse':
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attrs = ['cx', 'cy', 'rx', 'ry'];
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break;
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case 'foreignObject':
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case 'rect':
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case 'image':
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attrs = ['width', 'height', 'x', 'y'];
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break;
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case 'use':
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case 'text':
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case 'tspan':
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attrs = ['x', 'y'];
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break;
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case 'polygon':
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case 'polyline':
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initial = {};
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initial.points = selected.getAttribute('points');
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var list = selected.points;
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var len = list.numberOfItems;
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changes.points = new Array(len);
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var i;
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for (i = 0; i < len; ++i) {
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var pt = list.getItem(i);
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changes.points[i] = {x:pt.x, y:pt.y};
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}
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break;
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case 'path':
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initial = {};
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initial.d = selected.getAttribute('d');
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changes.d = selected.getAttribute('d');
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break;
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} // switch on element type to get initial values
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if (attrs.length) {
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changes = $(selected).attr(attrs);
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$.each(changes, function(attr, val) {
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changes[attr] = svgedit.units.convertToNum(attr, val);
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});
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} else if (gsvg) {
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// GSVG exception
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changes = {
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x: $(gsvg).attr('x') || 0,
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y: $(gsvg).attr('y') || 0
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};
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}
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// if we haven't created an initial array in polygon/polyline/path, then
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// make a copy of initial values and include the transform
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if (initial == null) {
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initial = $.extend(true, {}, changes);
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$.each(initial, function(attr, val) {
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initial[attr] = svgedit.units.convertToNum(attr, val);
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});
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}
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// save the start transform value too
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initial.transform = context_.getStartTransform() || '';
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// if it's a regular group, we have special processing to flatten transforms
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if ((selected.tagName == 'g' && !gsvg) || selected.tagName == 'a') {
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var box = svgedit.utilities.getBBox(selected),
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oldcenter = {x: box.x+box.width/2, y: box.y+box.height/2},
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newcenter = svgedit.math.transformPoint(box.x+box.width/2,
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box.y+box.height/2,
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svgedit.math.transformListToTransform(tlist).matrix),
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m = svgroot.createSVGMatrix();
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// temporarily strip off the rotate and save the old center
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var gangle = svgedit.utilities.getRotationAngle(selected);
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if (gangle) {
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var a = gangle * Math.PI / 180;
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if ( Math.abs(a) > (1.0e-10) ) {
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var s = Math.sin(a)/(1 - Math.cos(a));
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} else {
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// FIXME: This blows up if the angle is exactly 0!
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var s = 2/a;
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}
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var i;
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for (i = 0; i < tlist.numberOfItems; ++i) {
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var xform = tlist.getItem(i);
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if (xform.type == 4) {
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// extract old center through mystical arts
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var rm = xform.matrix;
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oldcenter.y = (s*rm.e + rm.f)/2;
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oldcenter.x = (rm.e - s*rm.f)/2;
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tlist.removeItem(i);
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break;
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}
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}
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}
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var tx = 0, ty = 0,
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operation = 0,
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N = tlist.numberOfItems;
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if (N) {
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var first_m = tlist.getItem(0).matrix;
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}
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// first, if it was a scale then the second-last transform will be it
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if (N >= 3 && tlist.getItem(N-2).type == 3 &&
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tlist.getItem(N-3).type == 2 && tlist.getItem(N-1).type == 2)
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{
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operation = 3; // scale
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// if the children are unrotated, pass the scale down directly
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// otherwise pass the equivalent matrix() down directly
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var tm = tlist.getItem(N-3).matrix,
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sm = tlist.getItem(N-2).matrix,
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tmn = tlist.getItem(N-1).matrix;
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var children = selected.childNodes;
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var c = children.length;
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while (c--) {
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var child = children.item(c);
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tx = 0;
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ty = 0;
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if (child.nodeType == 1) {
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var childTlist = svgedit.transformlist.getTransformList(child);
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// some children might not have a transform (<metadata>, <defs>, etc)
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if (!childTlist) {continue;}
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var m = svgedit.math.transformListToTransform(childTlist).matrix;
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// Convert a matrix to a scale if applicable
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// if (svgedit.math.hasMatrixTransform(childTlist) && childTlist.numberOfItems == 1) {
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// if (m.b==0 && m.c==0 && m.e==0 && m.f==0) {
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// childTlist.removeItem(0);
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// var translateOrigin = svgroot.createSVGTransform(),
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// scale = svgroot.createSVGTransform(),
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// translateBack = svgroot.createSVGTransform();
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// translateOrigin.setTranslate(0, 0);
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// scale.setScale(m.a, m.d);
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// translateBack.setTranslate(0, 0);
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// childTlist.appendItem(translateBack);
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// childTlist.appendItem(scale);
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// childTlist.appendItem(translateOrigin);
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// }
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// }
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var angle = svgedit.utilities.getRotationAngle(child);
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var oldStartTransform = context_.getStartTransform();
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var childxforms = [];
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context_.setStartTransform(child.getAttribute('transform'));
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if (angle || svgedit.math.hasMatrixTransform(childTlist)) {
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var e2t = svgroot.createSVGTransform();
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e2t.setMatrix(svgedit.math.matrixMultiply(tm, sm, tmn, m));
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childTlist.clear();
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childTlist.appendItem(e2t);
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childxforms.push(e2t);
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}
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// if not rotated or skewed, push the [T][S][-T] down to the child
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else {
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// update the transform list with translate,scale,translate
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// slide the [T][S][-T] from the front to the back
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// [T][S][-T][M] = [M][T2][S2][-T2]
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// (only bringing [-T] to the right of [M])
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// [T][S][-T][M] = [T][S][M][-T2]
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// [-T2] = [M_inv][-T][M]
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var t2n = svgedit.math.matrixMultiply(m.inverse(), tmn, m);
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// [T2] is always negative translation of [-T2]
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var t2 = svgroot.createSVGMatrix();
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t2.e = -t2n.e;
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t2.f = -t2n.f;
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// [T][S][-T][M] = [M][T2][S2][-T2]
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// [S2] = [T2_inv][M_inv][T][S][-T][M][-T2_inv]
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var s2 = svgedit.math.matrixMultiply(t2.inverse(), m.inverse(), tm, sm, tmn, m, t2n.inverse());
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var translateOrigin = svgroot.createSVGTransform(),
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scale = svgroot.createSVGTransform(),
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translateBack = svgroot.createSVGTransform();
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translateOrigin.setTranslate(t2n.e, t2n.f);
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scale.setScale(s2.a, s2.d);
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translateBack.setTranslate(t2.e, t2.f);
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childTlist.appendItem(translateBack);
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childTlist.appendItem(scale);
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childTlist.appendItem(translateOrigin);
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childxforms.push(translateBack);
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childxforms.push(scale);
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childxforms.push(translateOrigin);
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// logMatrix(translateBack.matrix);
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// logMatrix(scale.matrix);
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} // not rotated
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batchCmd.addSubCommand( svgedit.recalculate.recalculateDimensions(child) );
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// TODO: If any <use> have this group as a parent and are
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// referencing this child, then we need to impose a reverse
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// scale on it so that when it won't get double-translated
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// var uses = selected.getElementsByTagNameNS(NS.SVG, 'use');
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// var href = '#' + child.id;
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// var u = uses.length;
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// while (u--) {
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// var useElem = uses.item(u);
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// if (href == svgedit.utilities.getHref(useElem)) {
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// var usexlate = svgroot.createSVGTransform();
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// usexlate.setTranslate(-tx,-ty);
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// svgedit.transformlist.getTransformList(useElem).insertItemBefore(usexlate,0);
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// batchCmd.addSubCommand( svgedit.recalculate.recalculateDimensions(useElem) );
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// }
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// }
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context_.setStartTransform(oldStartTransform);
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} // element
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} // for each child
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// Remove these transforms from group
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tlist.removeItem(N-1);
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tlist.removeItem(N-2);
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tlist.removeItem(N-3);
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} else if (N >= 3 && tlist.getItem(N-1).type == 1) {
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operation = 3; // scale
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m = svgedit.math.transformListToTransform(tlist).matrix;
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var e2t = svgroot.createSVGTransform();
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e2t.setMatrix(m);
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tlist.clear();
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tlist.appendItem(e2t);
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}
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// next, check if the first transform was a translate
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// if we had [ T1 ] [ M ] we want to transform this into [ M ] [ T2 ]
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// therefore [ T2 ] = [ M_inv ] [ T1 ] [ M ]
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else if ( (N == 1 || (N > 1 && tlist.getItem(1).type != 3)) &&
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tlist.getItem(0).type == 2)
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{
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operation = 2; // translate
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var T_M = svgedit.math.transformListToTransform(tlist).matrix;
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tlist.removeItem(0);
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var M_inv = svgedit.math.transformListToTransform(tlist).matrix.inverse();
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var M2 = svgedit.math.matrixMultiply( M_inv, T_M );
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tx = M2.e;
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ty = M2.f;
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if (tx != 0 || ty != 0) {
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// we pass the translates down to the individual children
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var children = selected.childNodes;
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var c = children.length;
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var clipPaths_done = [];
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while (c--) {
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var child = children.item(c);
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if (child.nodeType == 1) {
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// Check if child has clip-path
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if (child.getAttribute('clip-path')) {
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// tx, ty
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var attr = child.getAttribute('clip-path');
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if (clipPaths_done.indexOf(attr) === -1) {
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svgedit.recalculate.updateClipPath(attr, tx, ty);
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clipPaths_done.push(attr);
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}
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}
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var oldStartTransform = context_.getStartTransform();
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context_.setStartTransform(child.getAttribute('transform'));
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var childTlist = svgedit.transformlist.getTransformList(child);
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// some children might not have a transform (<metadata>, <defs>, etc)
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if (childTlist) {
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var newxlate = svgroot.createSVGTransform();
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newxlate.setTranslate(tx, ty);
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if (childTlist.numberOfItems) {
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childTlist.insertItemBefore(newxlate, 0);
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} else {
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childTlist.appendItem(newxlate);
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}
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batchCmd.addSubCommand(svgedit.recalculate.recalculateDimensions(child));
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// If any <use> have this group as a parent and are
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// referencing this child, then impose a reverse translate on it
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// so that when it won't get double-translated
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var uses = selected.getElementsByTagNameNS(NS.SVG, 'use');
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var href = '#' + child.id;
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var u = uses.length;
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while (u--) {
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var useElem = uses.item(u);
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if (href == svgedit.utilities.getHref(useElem)) {
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var usexlate = svgroot.createSVGTransform();
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usexlate.setTranslate(-tx,-ty);
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svgedit.transformlist.getTransformList(useElem).insertItemBefore(usexlate, 0);
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batchCmd.addSubCommand( svgedit.recalculate.recalculateDimensions(useElem) );
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}
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}
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context_.setStartTransform(oldStartTransform);
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}
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}
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}
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clipPaths_done = [];
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context_.setStartTransform(oldStartTransform);
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}
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}
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// else, a matrix imposition from a parent group
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// keep pushing it down to the children
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else if (N == 1 && tlist.getItem(0).type == 1 && !gangle) {
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operation = 1;
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var m = tlist.getItem(0).matrix,
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children = selected.childNodes,
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c = children.length;
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while (c--) {
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var child = children.item(c);
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if (child.nodeType == 1) {
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var oldStartTransform = context_.getStartTransform();
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context_.setStartTransform(child.getAttribute('transform'));
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var childTlist = svgedit.transformlist.getTransformList(child);
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if (!childTlist) {continue;}
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var em = svgedit.math.matrixMultiply(m, svgedit.math.transformListToTransform(childTlist).matrix);
|
|
var e2m = svgroot.createSVGTransform();
|
|
e2m.setMatrix(em);
|
|
childTlist.clear();
|
|
childTlist.appendItem(e2m, 0);
|
|
|
|
batchCmd.addSubCommand( svgedit.recalculate.recalculateDimensions(child) );
|
|
context_.setStartTransform(oldStartTransform);
|
|
|
|
// Convert stroke
|
|
// TODO: Find out if this should actually happen somewhere else
|
|
var sw = child.getAttribute('stroke-width');
|
|
if (child.getAttribute('stroke') !== 'none' && !isNaN(sw)) {
|
|
var avg = (Math.abs(em.a) + Math.abs(em.d)) / 2;
|
|
child.setAttribute('stroke-width', sw * avg);
|
|
}
|
|
|
|
}
|
|
}
|
|
tlist.clear();
|
|
}
|
|
// else it was just a rotate
|
|
else {
|
|
if (gangle) {
|
|
var newRot = svgroot.createSVGTransform();
|
|
newRot.setRotate(gangle, newcenter.x, newcenter.y);
|
|
if (tlist.numberOfItems) {
|
|
tlist.insertItemBefore(newRot, 0);
|
|
} else {
|
|
tlist.appendItem(newRot);
|
|
}
|
|
}
|
|
if (tlist.numberOfItems == 0) {
|
|
selected.removeAttribute('transform');
|
|
}
|
|
return null;
|
|
}
|
|
|
|
// if it was a translate, put back the rotate at the new center
|
|
if (operation == 2) {
|
|
if (gangle) {
|
|
newcenter = {
|
|
x: oldcenter.x + first_m.e,
|
|
y: oldcenter.y + first_m.f
|
|
};
|
|
|
|
var newRot = svgroot.createSVGTransform();
|
|
newRot.setRotate(gangle, newcenter.x, newcenter.y);
|
|
if (tlist.numberOfItems) {
|
|
tlist.insertItemBefore(newRot, 0);
|
|
} else {
|
|
tlist.appendItem(newRot);
|
|
}
|
|
}
|
|
}
|
|
// if it was a resize
|
|
else if (operation == 3) {
|
|
var m = svgedit.math.transformListToTransform(tlist).matrix;
|
|
var roldt = svgroot.createSVGTransform();
|
|
roldt.setRotate(gangle, oldcenter.x, oldcenter.y);
|
|
var rold = roldt.matrix;
|
|
var rnew = svgroot.createSVGTransform();
|
|
rnew.setRotate(gangle, newcenter.x, newcenter.y);
|
|
var rnew_inv = rnew.matrix.inverse(),
|
|
m_inv = m.inverse(),
|
|
extrat = svgedit.math.matrixMultiply(m_inv, rnew_inv, rold, m);
|
|
|
|
tx = extrat.e;
|
|
ty = extrat.f;
|
|
|
|
if (tx != 0 || ty != 0) {
|
|
// now push this transform down to the children
|
|
// we pass the translates down to the individual children
|
|
var children = selected.childNodes;
|
|
var c = children.length;
|
|
while (c--) {
|
|
var child = children.item(c);
|
|
if (child.nodeType == 1) {
|
|
var oldStartTransform = context_.getStartTransform();
|
|
context_.setStartTransform(child.getAttribute('transform'));
|
|
var childTlist = svgedit.transformlist.getTransformList(child);
|
|
var newxlate = svgroot.createSVGTransform();
|
|
newxlate.setTranslate(tx, ty);
|
|
if (childTlist.numberOfItems) {
|
|
childTlist.insertItemBefore(newxlate, 0);
|
|
} else {
|
|
childTlist.appendItem(newxlate);
|
|
}
|
|
|
|
batchCmd.addSubCommand( svgedit.recalculate.recalculateDimensions(child) );
|
|
context_.setStartTransform(oldStartTransform);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (gangle) {
|
|
if (tlist.numberOfItems) {
|
|
tlist.insertItemBefore(rnew, 0);
|
|
} else {
|
|
tlist.appendItem(rnew);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// else, it's a non-group
|
|
else {
|
|
|
|
// FIXME: box might be null for some elements (<metadata> etc), need to handle this
|
|
var box = svgedit.utilities.getBBox(selected);
|
|
|
|
// Paths (and possbly other shapes) will have no BBox while still in <defs>,
|
|
// but we still may need to recalculate them (see issue 595).
|
|
// TODO: Figure out how to get BBox from these elements in case they
|
|
// have a rotation transform
|
|
|
|
if (!box && selected.tagName != 'path') return null;
|
|
|
|
|
|
var m = svgroot.createSVGMatrix(),
|
|
// temporarily strip off the rotate and save the old center
|
|
angle = svgedit.utilities.getRotationAngle(selected);
|
|
if (angle) {
|
|
var oldcenter = {x: box.x+box.width/2, y: box.y+box.height/2},
|
|
newcenter = svgedit.math.transformPoint(box.x+box.width/2, box.y+box.height/2,
|
|
svgedit.math.transformListToTransform(tlist).matrix);
|
|
|
|
var a = angle * Math.PI / 180;
|
|
if ( Math.abs(a) > (1.0e-10) ) {
|
|
var s = Math.sin(a)/(1 - Math.cos(a));
|
|
} else {
|
|
// FIXME: This blows up if the angle is exactly 0!
|
|
var s = 2/a;
|
|
}
|
|
for (var i = 0; i < tlist.numberOfItems; ++i) {
|
|
var xform = tlist.getItem(i);
|
|
if (xform.type == 4) {
|
|
// extract old center through mystical arts
|
|
var rm = xform.matrix;
|
|
oldcenter.y = (s*rm.e + rm.f)/2;
|
|
oldcenter.x = (rm.e - s*rm.f)/2;
|
|
tlist.removeItem(i);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// 2 = translate, 3 = scale, 4 = rotate, 1 = matrix imposition
|
|
var operation = 0;
|
|
var N = tlist.numberOfItems;
|
|
|
|
// Check if it has a gradient with userSpaceOnUse, in which case
|
|
// adjust it by recalculating the matrix transform.
|
|
// TODO: Make this work in Webkit using svgedit.transformlist.SVGTransformList
|
|
if (!svgedit.browser.isWebkit()) {
|
|
var fill = selected.getAttribute('fill');
|
|
if (fill && fill.indexOf('url(') === 0) {
|
|
var paint = getRefElem(fill);
|
|
var type = 'pattern';
|
|
if (paint.tagName !== type) type = 'gradient';
|
|
var attrVal = paint.getAttribute(type + 'Units');
|
|
if (attrVal === 'userSpaceOnUse') {
|
|
//Update the userSpaceOnUse element
|
|
m = svgedit.math.transformListToTransform(tlist).matrix;
|
|
var gtlist = svgedit.transformlist.getTransformList(paint);
|
|
var gmatrix = svgedit.math.transformListToTransform(gtlist).matrix;
|
|
m = svgedit.math.matrixMultiply(m, gmatrix);
|
|
var m_str = 'matrix(' + [m.a, m.b, m.c, m.d, m.e, m.f].join(',') + ')';
|
|
paint.setAttribute(type + 'Transform', m_str);
|
|
}
|
|
}
|
|
}
|
|
|
|
// first, if it was a scale of a non-skewed element, then the second-last
|
|
// transform will be the [S]
|
|
// if we had [M][T][S][T] we want to extract the matrix equivalent of
|
|
// [T][S][T] and push it down to the element
|
|
if (N >= 3 && tlist.getItem(N-2).type == 3 &&
|
|
tlist.getItem(N-3).type == 2 && tlist.getItem(N-1).type == 2)
|
|
|
|
// Removed this so a <use> with a given [T][S][T] would convert to a matrix.
|
|
// Is that bad?
|
|
// && selected.nodeName != 'use'
|
|
{
|
|
operation = 3; // scale
|
|
m = svgedit.math.transformListToTransform(tlist, N-3, N-1).matrix;
|
|
tlist.removeItem(N-1);
|
|
tlist.removeItem(N-2);
|
|
tlist.removeItem(N-3);
|
|
} // if we had [T][S][-T][M], then this was a skewed element being resized
|
|
// Thus, we simply combine it all into one matrix
|
|
else if (N == 4 && tlist.getItem(N-1).type == 1) {
|
|
operation = 3; // scale
|
|
m = svgedit.math.transformListToTransform(tlist).matrix;
|
|
var e2t = svgroot.createSVGTransform();
|
|
e2t.setMatrix(m);
|
|
tlist.clear();
|
|
tlist.appendItem(e2t);
|
|
// reset the matrix so that the element is not re-mapped
|
|
m = svgroot.createSVGMatrix();
|
|
} // if we had [R][T][S][-T][M], then this was a rotated matrix-element
|
|
// if we had [T1][M] we want to transform this into [M][T2]
|
|
// therefore [ T2 ] = [ M_inv ] [ T1 ] [ M ] and we can push [T2]
|
|
// down to the element
|
|
else if ( (N == 1 || (N > 1 && tlist.getItem(1).type != 3)) &&
|
|
tlist.getItem(0).type == 2)
|
|
{
|
|
operation = 2; // translate
|
|
var oldxlate = tlist.getItem(0).matrix,
|
|
meq = svgedit.math.transformListToTransform(tlist,1).matrix,
|
|
meq_inv = meq.inverse();
|
|
m = svgedit.math.matrixMultiply( meq_inv, oldxlate, meq );
|
|
tlist.removeItem(0);
|
|
}
|
|
// else if this child now has a matrix imposition (from a parent group)
|
|
// we might be able to simplify
|
|
else if (N == 1 && tlist.getItem(0).type == 1 && !angle) {
|
|
// Remap all point-based elements
|
|
m = svgedit.math.transformListToTransform(tlist).matrix;
|
|
switch (selected.tagName) {
|
|
case 'line':
|
|
changes = $(selected).attr(['x1', 'y1', 'x2', 'y2']);
|
|
case 'polyline':
|
|
case 'polygon':
|
|
changes.points = selected.getAttribute('points');
|
|
if (changes.points) {
|
|
var list = selected.points;
|
|
var len = list.numberOfItems;
|
|
changes.points = new Array(len);
|
|
for (var i = 0; i < len; ++i) {
|
|
var pt = list.getItem(i);
|
|
changes.points[i] = {x:pt.x, y:pt.y};
|
|
}
|
|
}
|
|
case 'path':
|
|
changes.d = selected.getAttribute('d');
|
|
operation = 1;
|
|
tlist.clear();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
// if it was a rotation, put the rotate back and return without a command
|
|
// (this function has zero work to do for a rotate())
|
|
else {
|
|
operation = 4; // rotation
|
|
if (angle) {
|
|
var newRot = svgroot.createSVGTransform();
|
|
newRot.setRotate(angle, newcenter.x, newcenter.y);
|
|
|
|
if (tlist.numberOfItems) {
|
|
tlist.insertItemBefore(newRot, 0);
|
|
} else {
|
|
tlist.appendItem(newRot);
|
|
}
|
|
}
|
|
if (tlist.numberOfItems == 0) {
|
|
selected.removeAttribute('transform');
|
|
}
|
|
return null;
|
|
}
|
|
|
|
// if it was a translate or resize, we need to remap the element and absorb the xform
|
|
if (operation == 1 || operation == 2 || operation == 3) {
|
|
svgedit.coords.remapElement(selected, changes, m);
|
|
} // if we are remapping
|
|
|
|
// if it was a translate, put back the rotate at the new center
|
|
if (operation == 2) {
|
|
if (angle) {
|
|
if (!svgedit.math.hasMatrixTransform(tlist)) {
|
|
newcenter = {
|
|
x: oldcenter.x + m.e,
|
|
y: oldcenter.y + m.f
|
|
};
|
|
}
|
|
var newRot = svgroot.createSVGTransform();
|
|
newRot.setRotate(angle, newcenter.x, newcenter.y);
|
|
if (tlist.numberOfItems) {
|
|
tlist.insertItemBefore(newRot, 0);
|
|
} else {
|
|
tlist.appendItem(newRot);
|
|
}
|
|
}
|
|
// We have special processing for tspans: Tspans are not transformable
|
|
// but they can have x,y coordinates (sigh). Thus, if this was a translate,
|
|
// on a text element, also translate any tspan children.
|
|
if (selected.tagName == 'text') {
|
|
var children = selected.childNodes;
|
|
var c = children.length;
|
|
while (c--) {
|
|
var child = children.item(c);
|
|
if (child.tagName == 'tspan') {
|
|
var tspanChanges = {
|
|
x: $(child).attr('x') || 0,
|
|
y: $(child).attr('y') || 0
|
|
};
|
|
svgedit.coords.remapElement(child, tspanChanges, m);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// [Rold][M][T][S][-T] became [Rold][M]
|
|
// we want it to be [Rnew][M][Tr] where Tr is the
|
|
// translation required to re-center it
|
|
// Therefore, [Tr] = [M_inv][Rnew_inv][Rold][M]
|
|
else if (operation == 3 && angle) {
|
|
var m = svgedit.math.transformListToTransform(tlist).matrix;
|
|
var roldt = svgroot.createSVGTransform();
|
|
roldt.setRotate(angle, oldcenter.x, oldcenter.y);
|
|
var rold = roldt.matrix;
|
|
var rnew = svgroot.createSVGTransform();
|
|
rnew.setRotate(angle, newcenter.x, newcenter.y);
|
|
var rnew_inv = rnew.matrix.inverse();
|
|
var m_inv = m.inverse();
|
|
var extrat = svgedit.math.matrixMultiply(m_inv, rnew_inv, rold, m);
|
|
|
|
svgedit.coords.remapElement(selected, changes, extrat);
|
|
if (angle) {
|
|
if (tlist.numberOfItems) {
|
|
tlist.insertItemBefore(rnew, 0);
|
|
} else {
|
|
tlist.appendItem(rnew);
|
|
}
|
|
}
|
|
}
|
|
} // a non-group
|
|
|
|
// if the transform list has been emptied, remove it
|
|
if (tlist.numberOfItems == 0) {
|
|
selected.removeAttribute('transform');
|
|
}
|
|
|
|
batchCmd.addSubCommand(new svgedit.history.ChangeElementCommand(selected, initial));
|
|
|
|
return batchCmd;
|
|
};
|
|
})();
|