/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*************************************************************
*
* MathJax/jax/output/CommonHTML/autoload/mtable.js
*
* Implements the CommonHTML output for <mtable> elements.
*
* ---------------------------------------------------------------------
*
* Copyright (c) 2015 The MathJax Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
var VERSION = "2.6.0";
var MML = MathJax.ElementJax.mml,
CONFIG = MathJax.Hub.config,
CHTML = MathJax.OutputJax.CommonHTML,
SPLIT = MathJax.Hub.SplitList;
var LABEL = -1,
BIGDIMEN = 1000000;
MML.mtable.Augment({
toCommonHTML: function (node) {
//
// Create the table nodes and put them in a table
// (so that its bottom is on the baseline, rather than aligned on the top row)
//
var state = {rows:[], labels:[], labeled: false};
node = this.CHTMLdefaultNode(node,{noBBox:true, childOptions:state});
var table = CHTML.Element("mjx-table");
while (node.firstChild) table.appendChild(node.firstChild);
node.appendChild(table);
//
// Get the table attributes
//
var values = this.getValues("columnalign","rowalign","columnspacing","rowspacing",
"columnwidth","equalcolumns","equalrows",
"columnlines","rowlines","frame","framespacing",
"align","width","side","minlabelspacing","useHeight");
var t = CHTML.TEX.min_rule_thickness/CHTML.em;
state.t = CHTML.Px(t*this.CHTML.scale,1);
//
// Create the table
//
this.CHTMLgetBoxSizes(values,state);
this.CHTMLgetAttributes(values,state);
if (values.equalrows) {
state.HD = true;
state.HH = Math.max.apply(Math,state.H);
state.DD = Math.max.apply(Math,state.D);
}
this.CHTMLadjustCells(values,state);
if (values.frame) table.style.border = state.t+" "+values.frame;
this.CHTMLalignV(values,state,node);
this.CHTMLcolumnWidths(values,state,node);
this.CHTMLstretchCells(values,state);
if (state.labeled) this.CHTMLaddLabels(values,state,node,table);
//
// Set the bounding box (ignores overlapping outside of the table)
//
var BBOX = this.CHTML;
BBOX.w = BBOX.r = state.R;
BBOX.h = BBOX.t = state.T-state.B;
BBOX.d = BBOX.b = state.B;
if (!values.frame && !BBOX.pwidth) {
node.style.padding = "0 "+CHTML.Em(1/6);
BBOX.L = BBOX.R = 1/6;
}
//
// Add any needed space and color
//
this.CHTMLhandleSpace(node);
this.CHTMLhandleBBox(node);
this.CHTMLhandleColor(node);
//
// Return the completed node
//
return node;
},
//
// Get the natural height, depth, and widths of the rows and columns
//
CHTMLgetBoxSizes: function (values,state) {
var LH = CHTML.FONTDATA.lineH * values.useHeight,
LD = CHTML.FONTDATA.lineD * values.useHeight;
var H = [], D = [], W = [], J = -1;
for (var i = 0, m = this.data.length; i < m; i++) {
var row = this.data[i], s = (row.type === "mtr" ? 0 : LABEL);
H[i] = LH; D[i] = LD;
for (var j = s, M = row.data.length + s; j < M; j++) {
if (W[j] == null) {W[j] = -BIGDIMEN; if (j > J) J = j}
var cbox = row.data[j-s].CHTML;
if (cbox.h > H[i]) H[i] = cbox.h;
if (cbox.d > D[i]) D[i] = cbox.d;
if (cbox.w > W[j]) W[j] = cbox.w;
}
}
state.H = H; state.D = D; state.W = W, state.J = J;
},
//
// Pad the spacing and alignment attributes to match the size of the table
//
CHTMLgetAttributes: function (values,state) {
var CSPACE = SPLIT(values.columnspacing),
RSPACE = SPLIT(values.rowspacing),
CALIGN = SPLIT(values.columnalign),
RALIGN = SPLIT(values.rowalign),
CLINES = SPLIT(values.columnlines),
RLINES = SPLIT(values.rowlines),
CWIDTH = SPLIT(values.columnwidth),
RCALIGN = [], i, m, J = state.J, M = state.rows.length-1;
for (i = 0, m = CSPACE.length; i < m; i++) CSPACE[i] = this.CHTMLlength2em(CSPACE[i]);
for (i = 0, m = RSPACE.length; i < m; i++) RSPACE[i] = this.CHTMLlength2em(RSPACE[i]);
while (CSPACE.length < J) CSPACE.push(CSPACE[CSPACE.length-1]);
while (CALIGN.length <= J) CALIGN.push(CALIGN[CALIGN.length-1]);
while (CLINES.length < J) CLINES.push(CLINES[CLINES.length-1]);
while (CWIDTH.length <= J) CWIDTH.push(CWIDTH[CWIDTH.length-1]);
while (RSPACE.length < M) RSPACE.push(RSPACE[RSPACE.length-1]);
while (RALIGN.length <= M) RALIGN.push(RALIGN[RALIGN.length-1]);
while (RLINES.length < M) RLINES.push(RLINES[RLINES.length-1]);
CALIGN[LABEL] = (values.side.substr(0,1) === "l" ? "left" : "right");
//
// Override aligment data based on row-specific attributes
//
for (i = 0; i <= M; i++) {
var row = this.data[i]; RCALIGN[i] = [];
if (row.rowalign) RALIGN[i] = row.rowalign;
if (row.columnalign) {
RCALIGN[i] = SPLIT(row.columnalign);
while (RCALIGN[i].length <= J) RCALIGN[i].push(RCALIGN[i][RCALIGN[i].length-1]);
}
}
//
// Handle framespacing
//
var FSPACE = SPLIT(values.framespacing);
if (FSPACE.length != 2) FSPACE = SPLIT(this.defaults.framespacing);
FSPACE[0] = Math.max(0,this.CHTMLlength2em(FSPACE[0]));
FSPACE[1] = Math.max(0,this.CHTMLlength2em(FSPACE[1]));
if (values.columnlines.replace(/none/g,"").replace(/ /g,"") !== "" ||
values.rowlines.replace(/none/g,"").replace(/ /g,"") !== "") values.fspace = true;
//
// Pad arrays so that final column can be treated as all the others
//
if (values.frame === MML.LINES.NONE) delete values.frame; else values.fspace = true;
if (values.frame) {
FSPACE[0] = Math.max(0,FSPACE[0]);
FSPACE[1] = Math.max(0,FSPACE[1]);
}
if (values.fspace) {
CSPACE[J] = FSPACE[0]; RSPACE[M] = FSPACE[1];
} else {
CSPACE[J] = RSPACE[M] = 0;
}
CLINES[J] = RLINES[M] = MML.LINES.NONE;
//
// Save everything in the state
//
state.CSPACE = CSPACE; state.RSPACE = RSPACE;
state.CALIGN = CALIGN; state.RALIGN = RALIGN;
state.CLINES = CLINES; state.RLINES = RLINES;
state.CWIDTH = CWIDTH; state.RCALIGN = RCALIGN;
state.FSPACE = FSPACE;
},
//
// Add styles to cells to handle borders, spacing, alignment, etc.
//
CHTMLadjustCells: function(values,state) {
var ROWS = state.rows,
CSPACE = state.CSPACE, CLINES = state.CLINES,
RSPACE = state.RSPACE, RLINES = state.RLINES,
CALIGN = state.CALIGN, RALIGN = state.RALIGN,
RCALIGN = state.RCALIGN;
CSPACE[state.J] *= 2; RSPACE[ROWS.length-1] *= 2; // since halved below
var T = "0", B, R, L, border, cbox, align;
if (values.fspace) T = CHTML.Em(state.FSPACE[1]);
for (var i = 0, m = ROWS.length; i < m; i++) {
var row = ROWS[i], rdata = this.data[i];
//
// Space and borders between rows
//
B = RSPACE[i]/2; border = null; L = "0";
if (RLINES[i] !== MML.LINES.NONE && RLINES[i] !== "") {
border = state.t+" "+RLINES[i];
B -= 1/CHTML.em/2;
}
B = CHTML.Em(Math.max(0,B));
//
// Frame space for initial cell
//
if (values.fspace) L = CHTML.Em(state.FSPACE[0]);
//
// The cells in the row
//
for (var j = 0, M = row.length; j < M; j++) {
var s = (rdata.type === "mtr" ? 0 : LABEL);
cell = row[j].style; cbox = rdata.data[j-s].CHTML;
//
// Space and borders between columns
//
R = CSPACE[j]/2;
if (CLINES[j] !== MML.LINES.NONE) {
cell.borderRight = state.t+" "+CLINES[j];
R -= 1/CHTML.em/2;
}
R = CHTML.Em(Math.max(0,R));
cell.padding = T+" "+R+" "+B+" "+L;
if (border) cell.borderBottom = border;
L = R;
//
// Handle vertical and horizontal alignment
//
align = (rdata.data[j-s].rowalign||this.data[i].rowalign||RALIGN[i]);
align = ({top:"top", bottom:"bottom", center:"middle"})[align];
if (align) cell.verticalAlign = align;
align = (rdata.data[j-s].columnalign||RCALIGN[i][j]||CALIGN[j]);
if (align !== MML.ALIGN.CENTER) cell.textAlign = align;
//
// Equal heights forced by adding an element of the proper size
// (setting style.height seems to work very strangely)
//
if (state.HD && j === 0) {
CHTML.addElement(row[j].parentNode,"mjx-mtd",{style:{padding:T+" 0 "+B}},
[["mjx-box",{style:{
height:CHTML.Em(state.HH+state.DD),
"vertical-align":CHTML.Em(-state.DD)
}}]]
);
}
//
// Adjust height and depth of cells
//
cell = row[j].firstChild.style;
var H = Math.max(1,cbox.h);
if (H !== state.H[i]) cell.marginTop = CHTML.Em(state.H[i]-H);
if (cbox.d < state.D[i]) cell.marginBottom = CHTML.Em(state.D[i]-cbox.d);
}
T = B;
}
CSPACE[state.J] /= 2; RSPACE[ROWS.length-1] /= 2; // back to normal
},
//
// Align the table vertically according to the align attribute
//
CHTMLalignV: function (values,state,node) {
var n, M = state.rows.length, H = state.H, D = state.D, RSPACE = state.RSPACE;
//
// Get alignment type and row number
//
if (typeof(values.align) !== "string") values.align = String(values.align);
if (values.align.match(/(top|bottom|center|baseline|axis)( +(-?\d+))?/)) {
n = parseInt(RegExp.$3||"0");
values.align = RegExp.$1
if (n < 0) n += state.rows.length + 1;
if (n > M || n <= 0) n = null;
} else {
values.align = this.defaults.align;
}
//
// Get table height and baseline offset
//
var T = 0, B = 0, a = CHTML.TEX.axis_height;
if (values.fspace) T += state.FSPACE[1];
if (values.frame) {T += 2/CHTML.em; B += 1/CHTML.em}
var h = state.HH, d = state.DD;
for (var i = 0; i < M; i++) {
if (!state.HD) {h = H[i]; d = D[i]}
T += h + d + RSPACE[i];
if (n) {
if (i === n-1) {
B += ({top:h+d, bottom:0, center:(h+d)/2,
baseline:d, axis:a+d})[values.align] + RSPACE[i];
}
if (i >= n) B += h + d + RSPACE[i];
}
}
if (!n) B = ({top:T, bottom:0, center:T/2, baseline:T/2, axis:T/2-a})[values.align];
//
// Place the node and save the values
//
if (B) node.style.verticalAlign = CHTML.Em(-B);
state.T = T; state.B = B;
},
//
// Determine column widths and set the styles for the columns
//
CHTMLcolumnWidths: function (values,state,node) {
var CWIDTH = state.CWIDTH, CSPACE = state.CSPACE, J = state.J, j;
var WW = 0, setWidths = false, relWidth = values.width.match(/%$/);
var i, m, w;
//
// Handle equal columns by adjusting the CWIDTH array
//
if (values.width !== "auto" && !relWidth) {
WW = Math.max(0,this.CHTMLlength2em(values.width,state.R));
setWidths = true;
}
if (values.equalcolumns) {
if (relWidth) {
//
// Use percent of total (not perfect, but best we can do)
//
var p = CHTML.Percent(1/(J+1));
for (j = 0; j <= J; j++) CWIDTH[j] = p;
} else {
//
// For width = auto, make all widths equal the widest,
// otherwise, for specific width, remove intercolumn space
// and divide by number of columns to get widest space.
//
w = Math.max.apply(Math,state.W);
if (values.width !== "auto") {
var S = (values.fspace ? state.FSPACE[0] + (values.frame ? 2/CHTML.em : 0) : 0);
for (j = 0; j <= J; j++) S += CSPACE[j];
w = Math.max((WW-S)/(J+1),w);
}
w = CHTML.Em(w);
for (j = 0; j <= J; j++) CWIDTH[j] = w;
}
setWidths = true;
}
//
// Compute natural table width
//
var TW = 0; if (values.fspace) TW = state.FSPACE[0];
var auto = [], fit = [], percent = [], W = [];
var row = state.rows[0];
for (j = 0; j <= J; j++) {
W[j] = state.W[j];
if (CWIDTH[j] === "auto") auto.push(j)
else if (CWIDTH[j] === "fit") fit.push(j)
else if (CWIDTH[j].match(/%$/)) percent.push(j)
else W[j] = this.CHTMLlength2em(CWIDTH[j],W[j]);
TW += W[j] + CSPACE[j];
if (row[j]) row[j].style.width = CHTML.Em(W[j]);
}
if (values.frame) TW += 2/CHTML.em;
var hasFit = (fit.length > 0);
//
// Adjust widths of columns
//
if (setWidths) {
if (relWidth) {
//
// Attach appropriate widths to the columns
//
for (j = 0; j <= J; j++) {
cell = row[j].style;
if (CWIDTH[j] === "auto" && !hasFit) cell.width = "";
else if (CWIDTH[j] === "fit") cell.width = "";
else if (CWIDTH[j].match(/%$/)) cell.width = CWIDTH[j];
else cell.minWidth = cell.maxWidth = cell.width;
}
} else {
//
// Compute percentage widths
//
if (WW > TW) {
var extra = 0;
for (i = 0, m = percent.length; i < m; i++) {
j = percent[i];
w = Math.max(W[j],this.CHTMLlength2em(CWIDTH[j],WW));
extra += w-W[j]; W[j] = w;
row[j].style.width = CHTML.Em(w);
}
TW += extra;
}
//
// Compute "fit" widths
//
if (!hasFit) fit = auto;
if (WW > TW && fit.length) {
var dw = (WW - TW) / fit.length;
for (i = 0, m = fit.length; i < m; i++) {
j = fit[i]; W[j] += dw;
row[j].style.width = CHTML.Em(W[j]);
}
TW = WW;
}
}
}
W[LABEL] = state.W[LABEL];
state.W = W;
state.R = TW;
//
// Set variable width on DOM nodes
//
if (relWidth) {
this.CHTML.pwidth = values.width; this.CHTML.mwidth = CHTML.Em(TW);
node.style.width = node.firstChild.style.width = "100%";
}
},
//
// Stretch any cells that can be stretched
//
CHTMLstretchCells: function (values,state) {
var ROWS = state.rows, H = state.H, D = state.D, W = state.W,
J = state.J, M = ROWS.length-1;
var h = state.HH, d = state.DD;
for (var i = 0; i <= M; i++) {
var row = ROWS[i], rdata = this.data[i];
if (!state.HD) {h = H[i]; d = D[i]}
for (var j = 0; j <= J; j++) {
var cell = row[j], cdata = rdata.data[j];
if (!cdata) continue;
if (cdata.CHTML.stretch === "V") cdata.CHTMLstretchV(h,d);
else if (cdata.CHTML.stretch === "H") cdata.CHTMLstretchH(cell,W[j]);
}
}
},
//
// Add labels to a table
//
CHTMLaddLabels: function (values,state,node,table) {
//
// Get indentation and alignment
//
var indent = this.getValues("indentalignfirst","indentshiftfirst","indentalign","indentshift");
if (indent.indentalignfirst !== MML.INDENTALIGN.INDENTALIGN) indent.indentalign = indent.indentalignfirst;
if (indent.indentalign === MML.INDENTALIGN.AUTO) indent.indentalign = CONFIG.displayAlign;
if (indent.indentshiftfirst !== MML.INDENTSHIFT.INDENTSHIFT) indent.indentshift = indent.indentshiftfirst;
if (indent.indentshift === "auto") indent.indentshift = "0";
var shift = this.CHTMLlength2em(indent.indentshift,CHTML.cwidth);
var labelspace = this.CHTMLlength2em(values.minlabelspacing,.8);
var labelW = labelspace + state.W[LABEL], labelshift = 0, tw = state.R;
var dIndent = this.CHTMLlength2em(CONFIG.displayIndent,CHTML.cwidth);
var s = (state.CALIGN[LABEL] === MML.INDENTALIGN.RIGHT ? -1 : 1);
if (indent.indentalign === MML.INDENTALIGN.CENTER) {
tw += 2 * (labelW - s*(shift + dIndent));
shift += dIndent;
} else if (state.CALIGN[LABEL] === indent.indentalign) {
if (dIndent < 0) {labelshift = s*dIndent; dIndent = 0}
shift += s*dIndent; if (labelW > s*shift) shift = s*labelW; shift += labelshift;
shift *= s; tw += shift;
} else {
tw += labelW - s*shift + dIndent;
shift -= s*dIndent; shift *= -s;
}
//
// Create boxes for table and labels
//
var box = CHTML.addElement(node,"mjx-box",{
style:{width:"100%","text-align":indent.indentalign}
}); box.appendChild(table);
var labels = CHTML.Element("mjx-stack");
table.style.display = "inline-table"; if (!table.style.width) table.style.width = "auto";
labels.style.verticalAlign = "top";
table.style.verticalAlign = CHTML.Em(state.T-state.B-state.H[0]);
node.style.verticalAlign = "";
if (shift) {
if (indent.indentalign === MML.INDENTALIGN.CENTER) {
table.style.marginLeft = CHTML.Em(shift);
table.style.marginRight = CHTML.Em(-shift);
} else {
var margin = "margin" + (indent.indentalign === MML.INDENTALIGN.RIGHT ? "Right" : "Left");
table.style[margin] = CHTML.Em(shift);
}
}
//
// Add labels on correct side
//
if (state.CALIGN[LABEL] === "left") {
node.insertBefore(labels,box);
labels.style.marginRight = CHTML.Em(-state.W[LABEL]-labelshift);
if (labelshift) labels.style.marginLeft = CHTML.Em(labelshift);
} else {
node.appendChild(labels);
labels.style.marginLeft = CHTML.Em(-state.W[LABEL]+labelshift);
}
//
// Vertically align the labels with their rows
//
var LABELS = state.labels, T = 0, H = state.H, D = state.D, RSPACE = state.RSPACE;
if (values.fspace) T = state.FSPACE[0] + (values.frame ? 1/CHTML.em : 0);
var h = state.HH, d = state.DD;
for (var i = 0, m = LABELS.length; i < m; i++) {
if (!state.HD) {h = H[i]; d = D[i]}
if (LABELS[i] && this.data[i].data[0]) {
labels.appendChild(LABELS[i]);
var lbox = this.data[i].data[0].CHTML;
T += h - Math.max(1,lbox.h);
if (T) LABELS[i].style.marginTop = CHTML.Em(T);
T = d - lbox.d;
} else {
T += h + d;
}
T += RSPACE[i];
}
//
// Propagate full-width equations, and reserve room for equation plus label
//
node.style.width = this.CHTML.pwidth = "100%";
node.style.minWidth = this.CHTML.mwidth = CHTML.Em(Math.max(0,tw));
}
});
MML.mtr.Augment({
toCommonHTML: function (node,options) {
//
// Create the row node
//
node = this.CHTMLcreateNode(node);
this.CHTMLhandleStyle(node);
this.CHTMLhandleScale(node);
//
// Add a new row with no label
//
if (!options) options = {rows:[],labels:[]};
var row = []; options.rows.push(row);
options.labels.push(null);
//
// Add the cells to the row
//
for (var i = 0, m = this.data.length; i < m; i++)
row.push(this.CHTMLaddChild(node,i,options));
//
this.CHTMLhandleColor(node);
return node;
}
});
MML.mlabeledtr.Augment({
toCommonHTML: function (node,options) {
//
// Create the row node
//
node = this.CHTMLcreateNode(node);
this.CHTMLhandleStyle(node);
this.CHTMLhandleScale(node);
//
// Add a new row, and get the label
//
if (!options) options = {rows:[],labels:[]};
var row = []; options.rows.push(row);
var label = CHTML.Element("mjx-label"); options.labels.push(label);
this.CHTMLaddChild(label,0,options);
if (this.data[0]) options.labeled = true;
//
// Add the cells to the row
//
for (var i = 1, m = this.data.length; i < m; i++)
row.push(this.CHTMLaddChild(node,i,options));
//
this.CHTMLhandleColor(node);
return node;
}
});
MML.mtd.Augment({
toCommonHTML: function (node,options) {
node = this.CHTMLdefaultNode(node,options);
CHTML.addElement(node.firstChild,"mjx-strut"); // forces height to 1em (we adjust later)
//
// Determine if this is stretchy or not
//
if (this.isEmbellished()) {
var mo = this.CoreMO(), BBOX = this.CHTML;
if (mo.CHTMLcanStretch("Vertical")) BBOX.stretch = "V";
else if (mo.CHTMLcanStretch("Horizontal")) BBOX.stretch = "H";
if (BBOX.stretch) {
var min = mo.Get("minsize",true);
if (min) {
if (BBOX.stretch === "V") {
var HD = BBOX.h + BBOX.d;
if (HD) {
var r = this.CHTMLlength2em(min,HD)/HD;
if (r > 1) {BBOX.h *= r; BBOX.d *= r}
}
} else {
BBOX.w = Math.max(BBOX.w,this.CHTMLlength2em(min,BBOX.w));
}
}
}
}
return node;
}
});
MathJax.Hub.Startup.signal.Post("CommonHTML mtable Ready");
MathJax.Ajax.loadComplete(CHTML.autoloadDir+"/mtable.js");
});