mirrors/pdf.js
1
0
Fork 0
mirror of https://github.com/mozilla/pdf.js.git synced 2025-04-26 10:08:06 +02:00
Code Activity

Make the fonts decoding code works with asynchronous data url

Browse source
This commit is contained in:
Vivien Nicolas 2011-06-14 04:35:46 +02:00
parent b7449f3bcc
commit 375b383920
3 changed files with 161 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

61
test.js
View file

@ -21,7 +21,6 @@ function queryParams() {
return params;
}
function open(url) {
document.title = url;
req = new XMLHttpRequest();
@ -54,21 +53,59 @@ function displayPage(num) {
var page = pdfDocument.getPage(pageNum = num);
var t1 = Date.now();
function display() {
var t1 = Date.now();
var ctx = canvas.getContext("2d");
ctx.save();
ctx.fillStyle = "rgb(255, 255, 255)";
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.restore();
var ctx = canvas.getContext("2d");
ctx.save();
ctx.fillStyle = "rgb(255, 255, 255)";
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.restore();
var gfx = new CanvasGraphics(ctx);
page.display(gfx);
var gfx = new CanvasGraphics(ctx);
page.display(gfx);
var t2 = Date.now();
var infoDisplay = document.getElementById("info");
infoDisplay.innerHTML = "Time to render: "+ (t1 - t0) + "/" + (t2 - t1) + " ms";
}
var t2 = Date.now();
// Loading a font via data uri is asynchronous, so wait for all font
// of the page to be fully loaded before loading the page
var fontsReady = true;
var fonts = page.fonts;
for (var i = 0; i < fonts.length; i++) {
var fontName = fonts[i].replace("+", "_");
var font = Fonts[fontName];
if (!font) {
// load the new font
var xref = page.xref;
var resources = xref.fetchIfRef(page.resources);
var fontResource = resources.get("Font");
for (var id in fontResource.map) {
var res = xref.fetch(fontResource.get(id));
var descriptor = xref.fetch(res.get("FontDescriptor"));
var name = descriptor.get("FontName").toString();
if (name == fontName.replace("_", "+")) {
var subtype = res.get("Subtype").name;
var fontFile = page.xref.fetchIfRef(descriptor.get("FontFile"));
if (!fontFile)
fontFile = page.xref.fetchIfRef(descriptor.get("FontFile2"));
new Font(fontName, fontFile, subtype);
fontsReady = false;
break;
}
}
} else if (font.loading) {
fontsReady = false;
break;
}
}
var infoDisplay = document.getElementById("info");
infoDisplay.innerHTML = "Time to render: "+ (t1 - t0) + "/" + (t2 - t1) + " ms";
// If everything is ready do not delayed the page loading any more
if (fontsReady)
display();
else
setTimeout(displayPage, 150, num);
}
function nextPage() {