yetangitu/canvas-based-HTML5-Comic-Book-Reader
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This commit is contained in:
Bala Clark 2011-09-18 02:05:54 +02:00
parent c02932d9aa
commit 1e55f3dc39
1 changed files with 32 additions and 32 deletions
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64
lib/ComicBook.js
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@ -460,38 +460,6 @@ function ComicBook(id, srcs, opts) {
this.showControl("loadingOverlay"); this.showControl("loadingOverlay");
// loads pages in both directions so you don't have to wait for all pages
// to be loaded before you can scroll backwards
function preload(start, stop) {
var forward_buffer = 3; // TODO: make this into a config option?
var j = 0;
var count = 1;
var forward = start;
var backward = start-1;
while (forward <= stop) {
if (count > forward_buffer && backward > -1) {
queue.push(backward);
backward--;
count = 0;
} else {
queue.push(forward);
forward++;
}
count++;
}
while (backward > -1) {
queue.push(backward);
backward--;
}
loadImage(queue[j]);
}
function loadImage(i) { function loadImage(i) {
var page = new Image(); var page = new Image();
@ -532,6 +500,38 @@ function ComicBook(id, srcs, opts) {
}; };
} }
// loads pages in both directions so you don't have to wait for all pages
// to be loaded before you can scroll backwards
function preload(start, stop) {
var forward_buffer = 3; // TODO: make this into a config option?
var j = 0;
var count = 1;
var forward = start;
var backward = start-1;
while (forward <= stop) {
if (count > forward_buffer && backward > -1) {
queue.push(backward);
backward--;
count = 0;
} else {
queue.push(forward);
forward++;
}
count++;
}
while (backward > -1) {
queue.push(backward);
backward--;
}
loadImage(queue[j]);
}
preload(i, srcs.length-1); preload(i, srcs.length-1);
}; };