mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Math
synced 2024-11-30 02:15:06 +00:00
347 lines
13 KiB
JavaScript
347 lines
13 KiB
JavaScript
/*************************************************************
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*
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* MathJax/jax/output/SVG/autoload/mtable.js
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*
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* Implements the SVG output for <mtable> elements.
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*
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* ---------------------------------------------------------------------
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*
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* Copyright (c) 2011-2012 Design Science, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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MathJax.Hub.Register.StartupHook("SVG Jax Ready",function () {
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var VERSION = "2.0";
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var MML = MathJax.ElementJax.mml,
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SVG = MathJax.OutputJax.SVG,
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BBOX = SVG.BBOX;
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MML.mtable.Augment({
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toSVG: function (span) {
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var svg = this.SVG();
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if (this.data.length === 0) {return svg}
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var values = this.getValues("columnalign","rowalign","columnspacing","rowspacing",
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"columnwidth","equalcolumns","equalrows",
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"columnlines","rowlines","frame","framespacing",
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"align","useHeight","width","side","minlabelspacing");
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// Handle relative width as fixed width in relation to container
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if (values.width.match(/%$/))
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{svg.width = values.width = Math.floor(SVG.cwidth*parseFloat(values.width)/100)+"px"}
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var scale = this.SVGgetScale(), mu = this.SVGgetMu(svg);
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var LABEL = -1;
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var H = [], D = [], W = [], A = [], C = [], i, j, J = -1, m, M, s, row;
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var LHD = SVG.FONTDATA.baselineskip * scale * values.useHeight,
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LH = SVG.FONTDATA.lineH * scale, LD = SVG.FONTDATA.lineD * scale;
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//
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// Create cells and measure columns and rows
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//
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for (i = 0, m = this.data.length; i < m; i++) {
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row = this.data[i]; s = (row.type === "mlabeledtr" ? LABEL : 0);
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A[i] = []; H[i] = D[i] = 0;
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for (j = s, M = row.data.length + s; j < M; j++) {
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if (W[j] == null) {
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if (j > J) {J = j}
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C[j] = BBOX.G();
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W[j] = -SVG.BIGDIMEN;
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}
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A[i][j] = row.data[j-s].toSVG();
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// if (row.data[j-s].isMultiline) {A[i][j].style.width = "100%"}
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if (A[i][j].h > H[i]) {H[i] = A[i][j].h}
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if (A[i][j].d > D[i]) {D[i] = A[i][j].d}
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if (A[i][j].w > W[j]) {W[j] = A[i][j].w}
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}
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}
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if (H[0]+D[0]) {H[0] = Math.max(H[0],LH)}
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if (H[A.length-1]+D[A.length-1]) {D[A.length-1] = Math.max(D[A.length-1],LD)}
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//
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// Determine spacing and alignment
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//
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var CSPACE = values.columnspacing.split(/ /),
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RSPACE = values.rowspacing.split(/ /),
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CALIGN = values.columnalign.split(/ /),
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RALIGN = values.rowalign.split(/ /),
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CLINES = values.columnlines.split(/ /),
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RLINES = values.rowlines.split(/ /),
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CWIDTH = values.columnwidth.split(/ /),
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RCALIGN = [];
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for (i = 0, m = CSPACE.length; i < m; i++) {CSPACE[i] = SVG.length2em(CSPACE[i],mu)}
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for (i = 0, m = RSPACE.length; i < m; i++) {RSPACE[i] = SVG.length2em(RSPACE[i],mu)}
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while (CSPACE.length < J) {CSPACE.push(CSPACE[CSPACE.length-1])}
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while (CALIGN.length <= J) {CALIGN.push(CALIGN[CALIGN.length-1])}
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while (CLINES.length < J) {CLINES.push(CLINES[CLINES.length-1])}
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while (CWIDTH.length <= J) {CWIDTH.push(CWIDTH[CWIDTH.length-1])}
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while (RSPACE.length < A.length) {RSPACE.push(RSPACE[RSPACE.length-1])}
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while (RALIGN.length <= A.length) {RALIGN.push(RALIGN[RALIGN.length-1])}
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while (RLINES.length < A.length) {RLINES.push(RLINES[RLINES.length-1])}
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if (C[LABEL]) {
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CALIGN[LABEL] = (values.side.substr(0,1) === "l" ? "left" : "right");
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CSPACE[LABEL] = -W[LABEL];
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}
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//
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// Override row data
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//
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for (i = 0, m = A.length; i < m; i++) {
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row = this.data[i]; RCALIGN[i] = [];
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if (row.rowalign) {RALIGN[i] = row.rowalign}
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if (row.columnalign) {
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RCALIGN[i] = row.columnalign.split(/ /);
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while (RCALIGN[i].length <= J) {RCALIGN[i].push(RCALIGN[i][RCALIGN[i].length-1])}
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}
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}
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//
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// Handle equal heights
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//
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if (values.equalrows) {
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// FIXME: should really be based on row align (below is for baseline)
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var Hm = Math.max.apply(Math,H), Dm = Math.max.apply(Math,D);
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for (i = 0, m = A.length; i < m; i++)
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{s = ((Hm + Dm) - (H[i] + D[i])) / 2; H[i] += s; D[i] += s}
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}
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// FIXME: do background colors for entire cell (include half the intercolumn space?)
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//
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// Determine array total height
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//
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var HD = H[0] + D[A.length-1];
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for (i = 0, m = A.length-1; i < m; i++)
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{HD += Math.max((H[i]+D[i] ? LHD : 0),D[i]+H[i+1]+RSPACE[i])}
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//
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// Determine frame and line sizes
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//
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var fx = 0, fy = 0, fW, fH = HD;
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if (values.frame !== "none" ||
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(values.columnlines+values.rowlines).match(/solid|dashed/)) {
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fx = SVG.length2em(values.framespacing.split(/[, ]+/)[0],mu);
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fy = SVG.length2em(values.framespacing.split(/[, ]+/)[1],mu);
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fH = HD + 2*fy; // fW waits until svg.w is determined
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}
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//
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// Compute alignment
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//
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var Y, fY, n = "";
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if (typeof(values.align) !== "string") {values.align = String(values.align)}
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if (values.align.match(/(top|bottom|center|baseline|axis)( +(-?\d+))?/))
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{n = RegExp.$3; values.align = RegExp.$1} else {values.align = this.defaults.align}
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if (n !== "") {
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//
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// Find the height of the given row
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//
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n = parseInt(n);
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if (n < 0) {n = A.length + 1 + n}
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if (n < 1) {n = 1} else if (n > A.length) {n = A.length}
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Y = 0; fY = -(HD + fy) + H[0];
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for (i = 0, m = n-1; i < m; i++) {
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// FIXME: Should handle values.align for final row
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var dY = Math.max((H[i]+D[i] ? LHD : 0),D[i]+H[i+1]+RSPACE[i]);
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Y += dY; fY += dY;
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}
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} else {
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Y = ({
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top: -(H[0] + fy),
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bottom: HD + fy - H[0],
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center: HD/2 - H[0],
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baseline: HD/2 - H[0],
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axis: HD/2 + SVG.TeX.axis_height*scale - H[0]
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})[values.align];
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fY = ({
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top: -(HD + 2*fy),
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bottom: 0,
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center: -(HD/2 + fy),
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baseline: -(HD/2 + fy),
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axis: SVG.TeX.axis_height*scale - HD/2 - fy
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})[values.align];
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}
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var WW, WP = 0, Wt = 0, Wp = 0, p = 0, f = 0, P = [], F = [], Wf = 1;
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//
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if (values.equalcolumns && values.width !== "auto") {
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//
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// Handle equalcolumns for percent-width and fixed-width tables
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//
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// Get total width minus column spacing
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WW = SVG.length2em(values.width,mu);
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for (i = 0, m = Math.min(J+1,CSPACE.length); i < m; i++) {WW -= CSPACE[i]}
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// Determine individual column widths
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WW /= J+1;
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for (i = 0, m = Math.min(J+1,CWIDTH.length); i < m; i++) {W[i] = WW}
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} else {
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//
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// Get column widths for fit and percentage columns
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//
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// Calculate the natural widths and percentage widths,
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// while keeping track of the fit and percentage columns
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for(i = 0, m = Math.min(J+1,CWIDTH.length); i < m; i++) {
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if (CWIDTH[i] === "auto") {Wt += W[i]}
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else if (CWIDTH[i] === "fit") {F[f] = i; f++; Wt += W[i]}
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else if (CWIDTH[i].match(/%$/))
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{P[p] = i; p++; Wp += W[i]; WP += SVG.length2em(CWIDTH[i],mu,1)}
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else {W[i] = SVG.length2em(CWIDTH[i],mu); Wt += W[i]}
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}
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// Get the full width (excluding inter-column spacing)
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if (values.width === "auto") {
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if (WP > .98) {Wf = Wp/(Wt+Wp); WW = Wt + Wp} else {WW = Wt / (1-WP)}
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} else {
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WW = SVG.length2em(values.width,mu);
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for (i = 0, m = Math.min(J+1,CSPACE.length); i < m; i++) {WW -= CSPACE[i]}
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}
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// Determine the relative column widths
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for (i = 0, m = P.length; i < m; i++) {
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W[P[i]] = SVG.length2em(CWIDTH[P[i]],mu,WW*Wf); Wt += W[P[i]];
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}
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// Stretch fit columns, if any, otherwise stretch (or shrink) everything
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if (Math.abs(WW - Wt) > .01) {
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if (f && WW > Wt) {
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WW = (WW - Wt) / f; for (i = 0, m = F.length; i < m; i++) {W[F[i]] += WW}
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} else {WW = WW/Wt; for (j = 0; j <= J; j++) {W[j] *= WW}}
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}
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//
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// Handle equal columns
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//
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if (values.equalcolumns) {
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var Wm = Math.max.apply(Math,W);
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for (j = 0; j <= J; j++) {W[j] = Wm}
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}
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}
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//
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// Lay out array columns
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//
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var y = Y, dy, align; s = (C[LABEL] ? LABEL : 0);
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for (j = s; j <= J; j++) {
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C[j].w = W[j];
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for (i = 0, m = A.length; i < m; i++) {
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if (A[i][j]) {
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s = (this.data[i].type === "mlabeledtr" ? LABEL : 0);
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var cell = this.data[i].data[j-s];
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if (cell.SVGcanStretch("Horizontal")) {
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A[i][j] = cell.SVGstretchH(W[j]);
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} else if (cell.SVGcanStretch("Vertical")) {
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var mo = cell.CoreMO();
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var symmetric = mo.symmetric; mo.symmetric = false;
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A[i][j] = cell.SVGstretchV(H[i],D[i]);
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mo.symmetric = symmetric;
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}
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align = cell.rowalign||this.data[i].rowalign||RALIGN[i];
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dy = ({top: H[i] - A[i][j].h,
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bottom: A[i][j].d - D[i],
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center: ((H[i]-D[i]) - (A[i][j].h-A[i][j].d))/2,
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baseline: 0, axis: 0})[align]; // FIXME: handle axis better?
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align = (cell.columnalign||RCALIGN[i][j]||CALIGN[j])
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C[j].Align(A[i][j],align,0,y+dy);
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}
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if (i < A.length-1) {y -= Math.max((H[i]+D[i] ? LHD : 0),D[i]+H[i+1]+RSPACE[i])}
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}
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y = Y;
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}
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//
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// Place the columns and add column lines
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//
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var lw = 1.5*SVG.em;
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var x = fx - lw/2;
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for (j = 0; j <= J; j++) {
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svg.Add(C[j],x,0); x += W[j] + CSPACE[j];
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if (CLINES[j] !== "none" && j < J && j !== LABEL)
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{svg.Add(BBOX.VLINE(fH,lw,CLINES[j]),x-CSPACE[j]/2,fY)}
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}
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svg.w += fx; svg.d = -fY; svg.h = fH+fY;
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fW = svg.w;
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//
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// Add frame
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//
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if (values.frame !== "none") {
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svg.Add(BBOX.HLINE(fW,lw,values.frame),0,fY+fH-lw);
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svg.Add(BBOX.HLINE(fW,lw,values.frame),0,fY);
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svg.Add(BBOX.VLINE(fH,lw,values.frame),0,fY);
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svg.Add(BBOX.VLINE(fH,lw,values.frame),fW-lw,fY);
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}
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//
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// Add row lines
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//
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y = Y - lw/2;
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for (i = 0, m = A.length-1; i < m; i++) {
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dy = Math.max(LHD,D[i]+H[i+1]+RSPACE[i]);
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if (RLINES[i] !== "none")
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{svg.Add(BBOX.HLINE(fW,lw,RLINES[i]),0,y-D[i]-(dy-D[i]-H[i+1])/2)}
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y -= dy;
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}
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//
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// Finish the table
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//
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svg.Clean();
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this.SVGhandleSpace(svg);
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this.SVGhandleColor(svg);
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//
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// Place the labels, if any
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//
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if (C[LABEL]) {
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var indent = this.getValues("indentalignfirst","indentshiftfirst","indentalign","indentshift");
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if (indent.indentalignfirst !== MML.INDENTALIGN.INDENTALIGN) {indent.indentalign = indent.indentalignfirst}
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if (indent.indentalign === MML.INDENTALIGN.AUTO) {indent.indentalign = this.displayAlign}
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if (indent.indentshiftfirst !== MML.INDENTSHIFT.INDENTSHIFT) {indent.indentshift = indent.indentshiftfirst}
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if (indent.indentshift === "auto") {indent.indentshift = this.displayIndent}
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var shift = (indent.indentshift ? SVG.length2em(indent.indentshift,mu) : 0);
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var labelshift = SVG.length2em(values.minlabelspacing,mu);
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var eqn = svg; svg = this.SVG();
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if (indent.indentalign === MML.INDENTALIGN.CENTER) {
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svg.w = svg.r = SVG.length2em(SVG.cwidth+"px"); shift = 0; svg.hasIndent = true;
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} else if (CALIGN[LABEL] !== indent.indentalign) {
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svg.w = svg.r = SVG.length2em(SVG.cwidth+"px") - shift - labelshift;
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shift = labelshift = 0;
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} else {
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svg.w = svg.r = eqn.w + shift;
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svg.hasIndent = true;
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}
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svg.Align(eqn,indent.indentalign,shift,0);
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svg.Align(C[LABEL],CALIGN[LABEL],labelshift,0);
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}
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this.SVGsaveData(svg);
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return svg;
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},
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SVGhandleSpace: function (svg) {
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if (!this.hasFrame && !svg.width) {svg.x = svg.X = 167}
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this.SUPER(arguments).SVGhandleSpace.call(this,svg);
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}
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});
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MML.mtd.Augment({
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toSVG: function (HW,D) {
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var svg = this.svg = this.SVG();
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if (this.data[0]) {
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svg.Add(this.SVGdataStretched(0,HW,D));
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svg.Clean();
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}
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this.SVGhandleColor(svg);
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this.SVGsaveData(svg);
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return svg;
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}
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});
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MathJax.Hub.Startup.signal.Post("SVG mtable Ready");
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MathJax.Ajax.loadComplete(SVG.autoloadDir+"/mtable.js");
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});
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