|
327 | 327 | }, |
328 | 328 |
|
329 | 329 | postTranslate: function (state) { |
330 | | - if (!isMSIE && HUB.config.matchWebFonts) { |
331 | | - // |
332 | | - // Check for changes in the web fonts that might affect the sizes |
333 | | - // of math elements. This is a periodic check that goes on until |
334 | | - // a timeout is reached. |
335 | | - // |
336 | | - AJAX.timer.start(AJAX,["checkFonts",this,state.jax[this.id]], |
337 | | - this.config.fontCheckDelay,this.config.fontCheckTimeout); |
338 | | - } |
339 | 330 | if (this.forceReflow) { |
340 | 331 | // |
341 | 332 | // Firefox messes up some mtable's when they are dynamically created |
|
346 | 337 | } |
347 | 338 | }, |
348 | 339 |
|
349 | | - // |
350 | | - // Check to see if web fonts have been loaded that change the ex size |
351 | | - // of the surrounding font, the ex size within the math, or the widths |
352 | | - // of math elements. We do this by rechecking the ex and mex sizes |
353 | | - // (to see if the font scaling needs adjusting) and by checking the |
354 | | - // size of the inner mrow of math elements and mtd elements. The |
355 | | - // sizes of these have been stored in the NativeMML object of the |
356 | | - // element jax so that we can check for them here. |
357 | | - // |
358 | | - checkFonts: function (check,scripts) { |
359 | | - if (check.time(function () {})) return; |
360 | | - var adjust = [], mtd = [], size = [], i, m, script; |
361 | | - // |
362 | | - // Add the elements used for testing ex and em sizes |
363 | | - // |
364 | | - for (i = 0, m = scripts.length; i < m; i++) { |
365 | | - script = scripts[i]; |
366 | | - if (script.parentNode && script.MathJax.elementJax) { |
367 | | - script.parentNode.insertBefore(this.EmExSpan.cloneNode(true),script); |
368 | | - } |
369 | | - } |
370 | | - // |
371 | | - // Check to see if anything has changed |
372 | | - // |
373 | | - for (i = 0, m = scripts.length; i < m; i++) { |
374 | | - script = scripts[i]; if (!script.parentNode) continue; |
375 | | - var jax = script.MathJax.elementJax; if (!jax) continue; |
376 | | - var span = document.getElementById(jax.inputID+"-Frame"); |
377 | | - var math = span.getElementsByTagName("math")[0]; if (!math) continue; |
378 | | - jax = jax.NativeMML; |
379 | | - // |
380 | | - // Check if ex or mex has changed |
381 | | - // |
382 | | - var test = script.previousSibling; |
383 | | - var ex = test.firstChild.offsetWidth/60; |
384 | | - var mex = test.lastChild.offsetWidth/60; |
385 | | - if (ex === 0 || ex === "NaN") {ex = this.defaultEx; mex = this.defaultMEx} |
386 | | - var newEx = (ex !== jax.ex); |
387 | | - if (newEx || mex != jax.mex) { |
388 | | - var scale = (this.config.matchFontHeight && mex > 1 ? ex/mex : 1); |
389 | | - scale = Math.floor(Math.max(this.config.minScaleAdjust/100,scale) * this.config.scale); |
390 | | - if (scale/100 !== jax.scale) {size.push([span.style,scale])} |
391 | | - jax.scale = scale/100; jax.fontScale = scale+"%"; jax.ex = ex; jax.mex = mex; |
392 | | - } |
393 | | - |
394 | | - // |
395 | | - // Check width of math elements |
396 | | - // |
397 | | - if ("scrollWidth" in jax && (newEx || jax.scrollWidth !== math.firstChild.scrollWidth)) { |
398 | | - jax.scrollWidth = math.firstChild.scrollWidth; |
399 | | - adjust.push([math.parentNode.style,jax.scrollWidth/jax.ex/jax.scale]); |
400 | | - } |
401 | | - // |
402 | | - // Check widths of mtd elements |
403 | | - // |
404 | | - if (math.MathJaxMtds) { |
405 | | - for (j = 0, n = math.MathJaxMtds.length; j < n; j++) { |
406 | | - if (!math.MathJaxMtds[j].parentNode) continue; |
407 | | - if (newEx || math.MathJaxMtds[j].firstChild.scrollWidth !== jax.mtds[j]) { |
408 | | - jax.mtds[j] = math.MathJaxMtds[j].firstChild.scrollWidth; |
409 | | - mtd.push([math.MathJaxMtds[j],jax.mtds[j]/jax.ex]); |
410 | | - } |
411 | | - } |
412 | | - } |
413 | | - } |
414 | | - // |
415 | | - // Remove markers |
416 | | - // |
417 | | - for (i = 0, m = scripts.length; i < m; i++) { |
418 | | - script = scripts[i]; |
419 | | - if (script.parentNode && script.MathJax.elementJax) { |
420 | | - script.parentNode.removeChild(script.previousSibling); |
421 | | - } |
422 | | - } |
423 | | - // |
424 | | - // Adjust scaling factor |
425 | | - // |
426 | | - for (i = 0, m = size.length; i < m; i++) { |
427 | | - size[i][0].fontSize = size[i][1] + "%"; |
428 | | - } |
429 | | - // |
430 | | - // Adjust width of spans containing math elements that have changed |
431 | | - // |
432 | | - for (i = 0, m = adjust.length; i < m; i++) { |
433 | | - adjust[i][0].width = adjust[i][1].toFixed(3)+"ex"; |
434 | | - } |
435 | | - // |
436 | | - // Adjust widths of mtd elements that have changed |
437 | | - // |
438 | | - for (i = 0, m = mtd.length; i < m; i++) { |
439 | | - var style = mtd[i][0].getAttribute("style"); |
440 | | - style = style.replace(/(($|;)\s*min-width:).*?ex/,"$1 "+mtd[i][1].toFixed(3)+"ex"); |
441 | | - mtd[i][0].setAttribute("style",style); |
442 | | - } |
443 | | - // |
444 | | - // Try again later |
445 | | - // |
446 | | - setTimeout(check,check.delay); |
447 | | - }, |
448 | | - |
449 | 340 | // |
450 | 341 | // Remove MathML preceeding the script |
451 | 342 | // |
|
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