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Start adding a FontLoader class to isolate the font-loaded hack

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This commit is contained in:
Vivien Nicolas 2011-06-24 11:47:22 +02:00
parent 40006194ea
commit 86f197daba
2 changed files with 41 additions and 47 deletions
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35
viewer.js
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@ -3,7 +3,7 @@
"use strict";
var pdfDocument, canvas, pageDisplay, pageNum, numPages, pageInterval;
var pdfDocument, canvas, pageDisplay, pageNum, numPages, pageTimeout;
function load(userInput) {
canvas = document.getElementById("canvas");
canvas.mozOpaque = true;
@ -52,7 +52,7 @@ function gotoPage(num) {
}
function displayPage(num) {
window.clearInterval(pageInterval);
window.clearTimeout(pageTimeout);
document.getElementById("pageNumber").value = num;
@ -75,28 +75,12 @@ function displayPage(num) {
page.compile(gfx, fonts);
var t2 = Date.now();
var fontsReady = true;
// Inspect fonts and translate the missing one
var count = fonts.length;
for (var i = 0; i < count; i++) {
var font = fonts[i];
if (Fonts[font.name]) {
fontsReady = fontsReady && !Fonts[font.name].loading;
continue;
function loadFont() {
if (!FontsLoader.bind(fonts)) {
pageTimeout = window.setTimeout(loadFont, 10);
return;
}
new Font(font.name, font.file, font.properties);
fontsReady = false;
}
function delayLoadFont() {
for (var i = 0; i < count; i++) {
if (Fonts[font.name].loading)
return;
}
window.clearInterval(pageInterval);
var t3 = Date.now();
page.display(gfx);
@ -106,12 +90,7 @@ function displayPage(num) {
var infoDisplay = document.getElementById("info");
infoDisplay.innerHTML = "Time to load/compile/fonts/render: "+ (t1 - t0) + "/" + (t2 - t1) + "/" + (t3 - t2) + "/" + (t4 - t3) + " ms";
};
if (fontsReady) {
delayLoadFont();
} else {
pageInterval = setInterval(delayLoadFont, 10);
}
loadFont();
}
function nextPage() {