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Fixing font loading issues

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This commit is contained in:
Julian Viereck 2011-09-09 19:35:45 -07:00
parent dd9aea21e9
commit e15bfc00a0
2 changed files with 44 additions and 20 deletions
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63
fonts.js
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@ -159,49 +159,73 @@ if (!isWorker) {
}
var FontLoader = {
fontLoadData: {},
fonts: {},
fontsLoading: false,
waitingNames: [],
waitingStr: [],
bind: function(fonts, callback) {
console.log("requesting fonts", fonts[0].properties.loadedName, fonts[0].name);
var rules = [], names = [], objs = [];
var rules = [], names = [];
for (var i = 0; i < fonts.length; i++) {
var font = fonts[i];
var obj = new Font(font.name, font.file, font.properties);
objs.push(obj);
var str = '';
var data = obj.data;
var name = obj.loadedName;
if (data) {
var length = data.length;
for (var j = 0; j < length; j++)
str += String.fromCharCode(data[j]);
var rule = isWorker ? obj.bindWorker(str) : obj.bindDOM(str);
if (rule) {
rules.push(rule);
names.push(obj.loadedName);
this.fonts[obj.loadedName] = obj;
this.fontLoadData[obj.loadedName] = obj;
}
this.waitingNames.push(name);
this.waitingStr.push(str);
} else {
// If there is no data, then there is nothing to load and we can
// resolve the object right away.
Objects.resolve(name, obj);
}
}
if (rules.length) {
this.fontsLoading += rules.length;
FontLoader.prepareFontLoadEvent(rules, names);
if (!this.fontsLoading) {
this.executeWaiting();
} else {
console.log('There are currently some fonts getting loaded - waiting');
}
return objs;
},
postFontLoadEvent: function(names) {
executeWaiting: function() {
var names = this.waitingNames;
console.log('executing fonts', names.join(', '));
var rules = [];
for (var i = 0; i < names.length; i++) {
var obj = this.fonts[names[i]];
var rule = obj.bindDOM(this.waitingStr[i]);
rules.push(rule);
}
this.prepareFontLoadEvent(rules, names);
this.waitingNames = [];
this.waitingStr = [];
},
fontLoadEvent: function(names) {
this.fontsLoading = false;
for (var i = 0; i < names.length; i++) {
var name = names[i];
Objects.resolve(name, this.fontLoadData[name]);
Objects.resolve(name, this.fonts[name]);
}
if (this.waitingNames.length != 0) {
this.executeWaiting();
}
},
@ -210,7 +234,8 @@ var FontLoader = {
// loaded in a subdocument. It's expected that the load of |rules|
// has already started in this (outer) document, so that they should
// be ordered before the load in the subdocument.
prepareFontLoadEvent: function(rules, names, callback) {
prepareFontLoadEvent: function(rules, names) {
this.fontsLoading = true;
/** Hack begin */
// There's no event when a font has finished downloading so the
// following code is a dirty hack to 'guess' when a font is
@ -261,7 +286,7 @@ var FontLoader = {
}
src += ' var fontNames=[' + fontNamesArray + '];\n';
src += ' window.onload = function () {\n';
src += ' parent.postMessage(JSON.stringify(fontNames), "*");\n';
src += ' setTimeout(function(){parent.postMessage(JSON.stringify(fontNames), "*")},0);\n';
src += ' }';
src += '</script></head><body>';
for (var i = 0; i < names.length; ++i) {
@ -283,7 +308,7 @@ if (!isWorker) {
window.addEventListener(
'message',
function(e) {
FontLoader.postFontLoadEvent(JSON.parse(e.data));
FontLoader.fontLoadEvent(JSON.parse(e.data));
}.bind(this),
false);
}

1
pdf.js
View File

@ -5120,7 +5120,6 @@ var CanvasGraphics = (function() {
}
var name = fontObj.loadedName;
console.log("setFont", name);
if (!name) {
// TODO: fontDescriptor is not available, fallback to default font
name = 'sans-serif';