Mercurial > hg-website
changeset 277:84f2a6a16bd2
Update typeface.js from version 0.11 to 0.13
Fixes issue #5 (Rendering problems in IE8 on Windows 7) reported by Maxim Khitrov.
author | David Soria Parra <dsp@php.net> |
---|---|
date | Sun, 01 Nov 2009 20:26:16 +0100 |
parents | 6916a7e4fbf0 |
children | 83328df81290 |
files | static/javascript/typeface.js |
diffstat | 1 files changed, 382 insertions(+), 129 deletions(-) [+] |
line wrap: on
line diff
--- a/static/javascript/typeface.js Sun Nov 01 19:24:19 2009 +0100 +++ b/static/javascript/typeface.js Sun Nov 01 20:26:16 2009 +0100 @@ -1,8 +1,8 @@ /***************************************************************** -typeface.js, version 0.11 | typefacejs.neocracy.org +typeface.js, version 0.13 | typefacejs.neocracy.org -Copyright (c) 2008, David Chester davidchester@gmx.net +Copyright (c) 2008 - 2009, David Chester davidchester@gmx.net Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation @@ -48,18 +48,21 @@ face.loaded = true; }, - log: { - debug: function(message) { - var typefaceConsole = document.getElementById('typeface-console'); - if (typefaceConsole) - typefaceConsole.innerHTML += 'DEBUG: ' + message + "<br>"; - }, + log: function(message) { + + if (this.quiet) { + return; + } + + message = "typeface.js: " + message; + + if (this.customLogFn) { + this.customLogFn(message); - error: function(message) { - var typefaceConsole = document.getElementById('typeface-console'); - if (typefaceConsole) - typefaceConsole.innerHTML += 'ERROR: ' + message + "<br>"; + } else if (window.console && window.console.log) { + window.console.log(message); } + }, pixelsFromPoints: function(face, style, points, dimension) { @@ -100,12 +103,32 @@ fallbackCharacter: '.', + configure: function(args) { + var configurableOptionNames = [ 'customLogFn', 'customClassNameRegex', 'customTypefaceElementsList', 'quiet', 'verbose', 'disableSelection' ]; + + for (var i = 0; i < configurableOptionNames.length; i++) { + var optionName = configurableOptionNames[i]; + if (args[optionName]) { + if (optionName == 'customLogFn') { + if (typeof args[optionName] != 'function') { + throw "customLogFn is not a function"; + } else { + this.customLogFn = args.customLogFn; + } + } else { + this[optionName] = args[optionName]; + } + } + } + }, + getTextExtents: function(face, style, text) { var extentX = 0; var extentY = 0; var horizontalAdvance; - for (var i = 0; i < text.length; i++) { + var textLength = text.length; + for (var i = 0; i < textLength; i++) { var glyph = face.glyphs[text.charAt(i)] ? face.glyphs[text.charAt(i)] : face.glyphs[this.fallbackCharacter]; var letterSpacingAdjustment = this.pointsFromPixels(face, style, style.letterSpacing); extentX += Math.max(glyph.ha, glyph.x_max) + letterSpacingAdjustment; @@ -119,7 +142,7 @@ }; }, - pixelsFromCssAmount: function(cssAmount, defaultValue) { + pixelsFromCssAmount: function(cssAmount, defaultValue, element) { var matches = undefined; @@ -129,20 +152,48 @@ } else if (matches = cssAmount.match(/([\-\d+\.]+)px/)) { return matches[1]; - } else if (matches = cssAmount.match(/([\-\d\.]+)pt/)) { - return matches[1] * 100 / 75; } else { - return defaultValue; + // thanks to Dean Edwards for this very sneaky way to get IE to convert + // relative values to pixel values + + var pixelAmount; + + var leftInlineStyle = element.style.left; + var leftRuntimeStyle = element.runtimeStyle.left; + + element.runtimeStyle.left = element.currentStyle.left; + + if (!cssAmount.match(/\d(px|pt)$/)) { + element.style.left = '1em'; + } else { + element.style.left = cssAmount || 0; + } + + pixelAmount = element.style.pixelLeft; + + element.style.left = leftInlineStyle; + element.runtimeStyle.left = leftRuntimeStyle; + + return pixelAmount || defaultValue; + } + }, + + capitalizeText: function(text) { + return text.replace(/(^|\s)[a-z]/g, function(match) { return match.toUpperCase() } ); + }, + + getElementStyle: function(e) { + if (window.getComputedStyle) { + return window.getComputedStyle(e, ''); + + } else if (e.currentStyle) { + return e.currentStyle; } }, getRenderedText: function(e) { - var browserStyle = window.getComputedStyle ? - document.defaultView.getComputedStyle(e.parentNode, '') : - e.parentNode.currentStyle ? - e.parentNode.currentStyle : - { color: '#ff0000', fontSize: 12, fontFamily: 'arial' }; + var browserStyle = this.getElementStyle(e.parentNode); var inlineStyleAttribute = e.parentNode.getAttribute('style'); if (inlineStyleAttribute && typeof(inlineStyleAttribute) == 'object') { @@ -164,51 +215,120 @@ var style = { color: browserStyle.color, fontFamily: browserStyle.fontFamily.split(/\s*,\s*/)[0].replace(/(^"|^'|'$|"$)/g, '').toLowerCase(), - fontSize: this.pixelsFromCssAmount(browserStyle.fontSize, 12), + fontSize: this.pixelsFromCssAmount(browserStyle.fontSize, 12, e.parentNode), fontWeight: this.cssFontWeightMap[browserStyle.fontWeight], fontStyle: browserStyle.fontStyle ? browserStyle.fontStyle : 'normal', fontStretchPercent: this.cssFontStretchMap[inlineStyle && inlineStyle['font-stretch'] ? inlineStyle['font-stretch'] : 'default'], textDecoration: browserStyle.textDecoration, - lineHeight: this.pixelsFromCssAmount(browserStyle.lineHeight, 'normal'), - letterSpacing: this.pixelsFromCssAmount(browserStyle.letterSpacing, 0) + lineHeight: this.pixelsFromCssAmount(browserStyle.lineHeight, 'normal', e.parentNode), + letterSpacing: this.pixelsFromCssAmount(browserStyle.letterSpacing, 0, e.parentNode), + textTransform: browserStyle.textTransform }; var face; if ( - this.faces[style.fontFamily] && - this.faces[style.fontFamily][style.fontWeight] + this.faces[style.fontFamily] + && this.faces[style.fontFamily][style.fontWeight] ) { face = this.faces[style.fontFamily][style.fontWeight][style.fontStyle]; } + var text = e.nodeValue; + + if ( + e.previousSibling + && e.previousSibling.nodeType == 1 + && e.previousSibling.tagName != 'BR' + && this.getElementStyle(e.previousSibling).display.match(/inline/) + ) { + text = text.replace(/^\s+/, ' '); + } else { + text = text.replace(/^\s+/, ''); + } + + if ( + e.nextSibling + && e.nextSibling.nodeType == 1 + && e.nextSibling.tagName != 'BR' + && this.getElementStyle(e.nextSibling).display.match(/inline/) + ) { + text = text.replace(/\s+$/, ' '); + } else { + text = text.replace(/\s+$/, ''); + } + + text = text.replace(/\s+/g, ' '); + + if (style.textTransform && style.textTransform != 'none') { + switch (style.textTransform) { + case 'capitalize': + text = this.capitalizeText(text); + break; + case 'uppercase': + text = text.toUpperCase(); + break; + case 'lowercase': + text = text.toLowerCase(); + break; + } + } + if (!face) { + var excerptLength = 12; + var textExcerpt = text.substring(0, excerptLength); + if (text.length > excerptLength) { + textExcerpt += '...'; + } + + var fontDescription = style.fontFamily; + if (style.fontWeight != 'normal') fontDescription += ' ' + style.fontWeight; + if (style.fontStyle != 'normal') fontDescription += ' ' + style.fontStyle; + + this.log("couldn't find typeface font: " + fontDescription + ' for text "' + textExcerpt + '"'); return; } - var text = e.nodeValue.replace(/(?:^\s+|\s+$)/g, ''); - text = text.replace(/\s+/g, ' '); - var words = text.split(/\s/); + var words = text.split(/\b(?=\w)/); var containerSpan = document.createElement('span'); - - for (var i = 0; i < words.length; i++) { + containerSpan.className = 'typeface-js-vector-container'; + + var wordsLength = words.length + for (var i = 0; i < wordsLength; i++) { var word = words[i]; - var delimiter = i == words.length - 1 ? '' : ' '; - var vectorElement = this.renderWord(face, style, word + delimiter); - if (vectorElement) - containerSpan.appendChild(vectorElement); + + var vector = this.renderWord(face, style, word); + + if (vector) { + containerSpan.appendChild(vector.element); + + if (!this.disableSelection) { + var selectableSpan = document.createElement('span'); + selectableSpan.className = 'typeface-js-selected-text'; + + var wordNode = document.createTextNode(word); + selectableSpan.appendChild(wordNode); + + if (this.vectorBackend != 'vml') { + selectableSpan.style.marginLeft = -1 * (vector.width + 1) + 'px'; + } + selectableSpan.targetWidth = vector.width; + //selectableSpan.style.lineHeight = 1 + 'px'; + + if (this.vectorBackend == 'vml') { + vector.element.appendChild(selectableSpan); + } else { + containerSpan.appendChild(selectableSpan); + } + } + } } return containerSpan; }, - renderDocument: function(callback) { // args: onComplete + renderDocument: function(callback) { - if (this.renderDocumentLock) - return; - - this.renderDocumentLock = true; - if (!callback) callback = function(e) { e.style.visibility = 'visible' }; @@ -223,46 +343,95 @@ } } } + + if (this.vectorBackend == 'vml') { + // lamely work around IE's quirky leaving off final dynamic shapes + var dummyShape = document.createElement('v:shape'); + dummyShape.style.display = 'none'; + document.body.appendChild(dummyShape); + } }, replaceText: function(e) { - if (e.hasChildNodes()) { - var childNodes = []; - for (var i = 0; i < e.childNodes.length; i++) { - childNodes[i] = e.childNodes[i]; - } - for (var i = 0; i < childNodes.length; i++) { - this.replaceText(childNodes[i]); - } + + var childNodes = []; + var childNodesLength = e.childNodes.length; + + for (var i = 0; i < childNodesLength; i++) { + this.replaceText(e.childNodes[i]); } if (e.nodeType == 3 && e.nodeValue.match(/\S/)) { var parentNode = e.parentNode; - + + if (parentNode.className == 'typeface-js-selected-text') { + return; + } + var renderedText = this.getRenderedText(e); + if ( + parentNode.tagName == 'A' + && this.vectorBackend == 'vml' + && this.getElementStyle(parentNode).display == 'inline' + ) { + // something of a hack, use inline-block to get IE to accept clicks in whitespace regions + parentNode.style.display = 'inline-block'; + parentNode.style.cursor = 'pointer'; + } + + if (this.getElementStyle(parentNode).display == 'inline') { + parentNode.style.display = 'inline-block'; + } + if (renderedText) { - parentNode.insertBefore(renderedText, e); - parentNode.removeChild(e); - } + if (parentNode.replaceChild) { + parentNode.replaceChild(renderedText, e); + } else { + parentNode.insertBefore(renderedText, e); + parentNode.removeChild(e); + } + if (this.vectorBackend == 'vml') { + renderedText.innerHTML = renderedText.innerHTML; + } + + var childNodesLength = renderedText.childNodes.length + for (var i; i < childNodesLength; i++) { + + // do our best to line up selectable text with rendered text + + var e = renderedText.childNodes[i]; + if (e.hasChildNodes() && !e.targetWidth) { + e = e.childNodes[0]; + } + + if (e && e.targetWidth) { + var letterSpacingCount = e.innerHTML.length; + var wordSpaceDelta = e.targetWidth - e.offsetWidth; + var letterSpacing = wordSpaceDelta / (letterSpacingCount || 1); + + if (this.vectorBackend == 'vml') { + letterSpacing = Math.ceil(letterSpacing); + } + + e.style.letterSpacing = letterSpacing + 'px'; + e.style.width = e.targetWidth + 'px'; + } + } + } } }, applyElementVerticalMetrics: function(face, style, e) { - var boundingBoxAdjustmentTop = this.pixelsFromPoints(face, style, face.ascender - Math.max(face.boundingBox.yMax, face.ascender)); - var boundingBoxAdjustmentBottom = this.pixelsFromPoints(face, style, Math.min(face.boundingBox.yMin, face.descender) - face.descender); - - var cssLineHeightAdjustment = 0; - if (style.lineHeight != 'normal') { - cssLineHeightAdjustment = style.lineHeight - this.pixelsFromPoints(face, style, face.lineHeight); + if (style.lineHeight == 'normal') { + style.lineHeight = this.pixelsFromPoints(face, style, face.lineHeight); } - - var marginTop = Math.round(boundingBoxAdjustmentTop + cssLineHeightAdjustment / 2); - var marginBottom = Math.round(boundingBoxAdjustmentBottom + cssLineHeightAdjustment / 2); + + var cssLineHeightAdjustment = style.lineHeight - this.pixelsFromPoints(face, style, face.lineHeight); - e.style.marginTop = marginTop + 'px'; - e.style.marginBottom = marginBottom + 'px'; + e.style.marginTop = Math.round( cssLineHeightAdjustment / 2 ) + 'px'; + e.style.marginBottom = Math.round( cssLineHeightAdjustment / 2) + 'px'; }, @@ -275,13 +444,15 @@ var extents = this.getTextExtents(face, style, text); var canvas = document.createElement('canvas'); - canvas.innerHTML = text; + if (this.disableSelection) { + canvas.innerHTML = text; + } - this.applyElementVerticalMetrics(face, style, canvas); canvas.height = Math.round(this.pixelsFromPoints(face, style, face.lineHeight)); - canvas.width = Math.round(this.pixelsFromPoints(face, style, extents.x, 'horizontal')); + this.applyElementVerticalMetrics(face, style, canvas); + if (extents.x > extents.ha) canvas.style.marginRight = Math.round(this.pixelsFromPoints(face, style, extents.x - extents.ha, 'horizontal')) + 'px'; @@ -314,7 +485,8 @@ glyph.cached_outline = outline; } - for (var i = 0; i < outline.length; ) { + var outlineLength = outline.length; + for (var i = 0; i < outlineLength; ) { var action = outline[i++]; @@ -352,9 +524,9 @@ ctx.save(); var chars = text.split(''); - for (var i = 0; i < chars.length; i++) { - var char = chars[i]; - this.renderGlyph(ctx, face, char, style); + var charsLength = chars.length; + for (var i = 0; i < charsLength; i++) { + this.renderGlyph(ctx, face, chars[i], style); } ctx.fill(); @@ -370,7 +542,8 @@ ctx.stroke(); } - return ctx.canvas; + return { element: ctx.canvas, width: Math.floor(canvas.width) }; + } }, @@ -382,8 +555,8 @@ var extents = this.getTextExtents(face, style, text); - shape.style.width = style.fontSize + 'px'; - shape.style.height = style.fontSize + 'px'; + shape.style.width = shape.style.height = style.fontSize + 'px'; + shape.style.marginLeft = '-1px'; // this seems suspect... if (extents.x > extents.ha) { shape.style.marginRight = this.pixelsFromPoints(face, style, extents.x - extents.ha, 'horizontal') + 'px'; @@ -391,7 +564,8 @@ this.applyElementVerticalMetrics(face, style, shape); - shape.coordsize = (face.resolution * 100 / style.fontStretchPercent / 72 ) + "," + (face.resolution * 100 / 72); + var resolutionScale = face.resolution * 100 / 72; + shape.coordsize = (resolutionScale / style.fontStretchPercent) + "," + resolutionScale; shape.coordorigin = '0,' + face.ascender; shape.style.flip = 'y'; @@ -404,73 +578,85 @@ return shape; }, - _renderGlyph: function(shape, face, char, offsetX, style) { + _renderGlyph: function(shape, face, char, offsetX, style, vmlSegments) { var glyph = face.glyphs[char]; if (!glyph) { - //this.log.error("glyph not defined: " + char); + this.log("glyph not defined: " + char); this.renderGlyph(shape, face, this.fallbackCharacter, offsetX, style); + return; } - var vmlSegments = []; + vmlSegments.push('m'); if (glyph.o) { - var outline; + var outline, outlineLength; + if (glyph.cached_outline) { outline = glyph.cached_outline; + outlineLength = outline.length; } else { outline = glyph.o.split(' '); + outlineLength = outline.length; + + for (var i = 0; i < outlineLength;) { + + switch(outline[i++]) { + case 'q': + outline[i] = Math.round(outline[i++]); + outline[i] = Math.round(outline[i++]); + case 'm': + case 'l': + outline[i] = Math.round(outline[i++]); + outline[i] = Math.round(outline[i++]); + break; + } + } + glyph.cached_outline = outline; } - var prevAction, prevX, prevY; - - var i; - for (i = 0; i < outline.length;) { + var prevX, prevY; + + for (var i = 0; i < outlineLength;) { var action = outline[i++]; - var vmlSegment = ''; - var x = Math.round(outline[i++]) + offsetX; - var y = Math.round(outline[i++]); + var x = outline[i++] + offsetX; + var y = outline[i++]; switch(action) { case 'm': - vmlSegment = (vmlSegments.length ? 'x ' : '') + 'm ' + x + ',' + y; + vmlSegments.push('xm ', x, ',', y); break; case 'l': - vmlSegment = 'l ' + x + ',' + y; + vmlSegments.push('l ', x, ',', y); break; case 'q': - var cpx = Math.round(outline[i++]) + offsetX; - var cpy = Math.round(outline[i++]); + var cpx = outline[i++] + offsetX; + var cpy = outline[i++]; var cp1x = Math.round(prevX + 2.0 / 3.0 * (cpx - prevX)); var cp1y = Math.round(prevY + 2.0 / 3.0 * (cpy - prevY)); var cp2x = Math.round(cp1x + (x - prevX) / 3.0); var cp2y = Math.round(cp1y + (y - prevY) / 3.0); - - vmlSegment = 'c ' + cp1x + ',' + cp1y + ',' + cp2x + ',' + cp2y + ',' + x + ',' + y; + + vmlSegments.push('c ', cp1x, ',', cp1y, ',', cp2x, ',', cp2y, ',', x, ',', y); break; } - - prevAction = action; + prevX = x; prevY = y; - - if (vmlSegment.length) { - vmlSegments.push(vmlSegment); - } } } - vmlSegments.push('x', 'e'); - return vmlSegments.join(' '); + vmlSegments.push('x e'); + return vmlSegments; }, _renderWord: function(face, style, text) { @@ -484,14 +670,20 @@ letterSpacingPoints = Math.round(letterSpacingPoints); var chars = text.split(''); + var vmlSegments = []; for (var i = 0; i < chars.length; i++) { var char = chars[i]; - shape.path += this.renderGlyph(shape, face, char, offsetX, style) + ' '; + vmlSegments = this.renderGlyph(shape, face, char, offsetX, style, vmlSegments); offsetX += face.glyphs[char].ha + letterSpacingPoints ; } - shape.style.marginRight = this.pixelsFromPoints(face, style, face.glyphs[' '].ha) + 'px'; - return shape; + // make sure to preserve trailing whitespace + shape.path += vmlSegments.join('') + 'm ' + offsetX + ' 0 l ' + offsetX + ' ' + face.ascender; + + return { + element: shape, + width: Math.floor(this.pixelsFromPoints(face, style, offsetX, 'horizontal')) + }; } } @@ -500,84 +692,145 @@ setVectorBackend: function(backend) { + this.vectorBackend = backend; var backendFunctions = ['renderWord', 'initializeSurface', 'renderGlyph']; for (var i = 0; i < backendFunctions.length; i++) { var backendFunction = backendFunctions[i]; this[backendFunction] = this.vectorBackends[backend]['_' + backendFunction]; } + }, + + initialize: function() { + + // quit if this function has already been called + if (arguments.callee.done) return; + + // flag this function so we don't do the same thing twice + arguments.callee.done = true; + + // kill the timer + if (window._typefaceTimer) clearInterval(_typefaceTimer); + + this.renderDocument( function(e) { e.style.visibility = 'visible' } ); + } + }; // IE won't accept real selectors... var typefaceSelectors = ['.typeface-js', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6']; if (document.createStyleSheet) { + var styleSheet = document.createStyleSheet(); for (var i = 0; i < typefaceSelectors.length; i++) { var selector = typefaceSelectors[i]; styleSheet.addRule(selector, 'visibility: hidden'); } + styleSheet.addRule( + '.typeface-js-selected-text', + '-ms-filter: \ + "Chroma(color=black) \ + progid:DXImageTransform.Microsoft.MaskFilter(Color=white) \ + progid:DXImageTransform.Microsoft.MaskFilter(Color=blue) \ + alpha(opacity=30)" !important; \ + color: black; \ + font-family: Modern; \ + position: absolute; \ + white-space: pre; \ + filter: alpha(opacity=0);' + ); + + styleSheet.addRule( + '.typeface-js-vector-container', + 'position: relative' + ); + } else if (document.styleSheets && document.styleSheets.length) { + var styleSheet = document.styleSheets[0]; document.styleSheets[0].insertRule(typefaceSelectors.join(',') + ' { visibility: hidden; }', styleSheet.cssRules.length); + + document.styleSheets[0].insertRule( + '.typeface-js-selected-text { \ + color: rgba(128, 128, 128, 0); \ + opacity: 0.30; \ + position: absolute; \ + font-family: Arial, sans-serif; \ + white-space: pre \ + }', + styleSheet.cssRules.length + ); + + try { + // set selection style for Mozilla / Firefox + document.styleSheets[0].insertRule( + '.typeface-js-selected-text::-moz-selection { background: blue; }', + styleSheet.cssRules.length + ); + + } catch(e) {}; + + try { + // set styles for browsers with CSS3 selectors (Safari, Chrome) + document.styleSheets[0].insertRule( + '.typeface-js-selected-text::selection { background: blue; }', + styleSheet.cssRules.length + ); + + } catch(e) {}; + + // most unfortunately, sniff for WebKit's quirky selection behavior + if (/WebKit/i.test(navigator.userAgent)) { + document.styleSheets[0].insertRule( + '.typeface-js-vector-container { position: relative }', + styleSheet.cssRules.length + ); + } + } var backend = !!(window.attachEvent && !window.opera) ? 'vml' : window.CanvasRenderingContext2D || document.createElement('canvas').getContext ? 'canvas' : null; if (backend == 'vml') { - - document.namespaces.add("v"); - + + document.namespaces.add("v","urn:schemas-microsoft-com:vml","#default#VML"); + var styleSheet = document.createStyleSheet(); - styleSheet.addRule('v\\:*', "behavior: url(#default#VML); display: inline-block;"); + styleSheet.addRule('v\\:shape', "display: inline-block;"); } _typeface_js.setVectorBackend(backend); - window._typeface_js = _typeface_js; -// based on code by Dean Edwards / Matthias Miller / John Resig - -function typefaceInit() { - - // quit if this function has already been called - if (arguments.callee.done) return; - - // flag this function so we don't do the same thing twice - arguments.callee.done = true; - - // kill the timer - if (window._typefaceTimer) clearInterval(_typefaceTimer); - - _typeface_js.renderDocument( function(e) { e.style.visibility = 'visible' } ); -}; - if (/WebKit/i.test(navigator.userAgent)) { var _typefaceTimer = setInterval(function() { if (/loaded|complete/.test(document.readyState)) { - typefaceInit(); + _typeface_js.initialize(); } }, 10); } if (document.addEventListener) { - window.addEventListener('DOMContentLoaded', function() { typefaceInit() }, false); + window.addEventListener('DOMContentLoaded', function() { _typeface_js.initialize() }, false); } /*@cc_on @*/ /*@if (@_win32) -document.write("<script id=__ie_onload_typeface defer src=javascript:void(0)><\/script>"); +document.write("<script id=__ie_onload_typeface defer src=//:><\/script>"); var script = document.getElementById("__ie_onload_typeface"); script.onreadystatechange = function() { if (this.readyState == "complete") { - typefaceInit(); + _typeface_js.initialize(); } }; /*@end @*/ +try { console.log('initializing typeface.js') } catch(e) {}; + })();