yetangitu/canvas-based-HTML5-Comic-Book-Reader
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more hacky pointer bugfixes

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This commit is contained in:
Bala Clark 2011-09-08 13:43:32 +02:00
parent 280fe124b2
commit e1d267b38b
1 changed files with 16 additions and 8 deletions
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24
lib/ComicBook.js
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@ -93,12 +93,6 @@ function ComicBook(id, srcs, opts) {
var page_requested = false; // used to request non preloaded pages
var shiv = false;
// page hash on first load
var hash = parseInt(location.hash.substring(1),10) - 1;
// the current page, can pass a default as a url hash
var pointer = (hash < srcs.length) ? hash : 0;
/**
* Gets the window.innerWidth - scrollbars
*/
@ -138,13 +132,24 @@ function ComicBook(id, srcs, opts) {
}
function getHash() {
return parseInt(location.hash.substring(1),10) - 1 || 0;
var hash = parseInt(location.hash.substring(1),10) - 1 || 0;
if (hash < 0) {
setHash(0);
hash = 0;
}
return hash;
}
function setHash(pageNo) {
location.hash = pageNo;
}
// page hash on first load
var hash = getHash();
// the current page, can pass a default as a url hash
var pointer = (hash < srcs.length) ? hash : 0;
/**
* Setup the canvas element for use throughout the class.
*
@ -509,7 +514,7 @@ function ComicBook(id, srcs, opts) {
ComicBook.prototype.drawPage = function(page_no) {
// if a specific page is given try to render it, if not bail and wait for preload() to render it
if (typeof page_no === "number" && page_no < srcs.length) {
if (typeof page_no === "number" && page_no < srcs.length && page_no > 0) {
pointer = page_no-1;
if (!this.pageLoaded(page_no)) {
this.showControl("loadingOverlay");
@ -517,6 +522,8 @@ function ComicBook(id, srcs, opts) {
}
}
if (pointer < 0) { pointer = 0; }
var zoom_scale;
var offsetW = 0, offsetH = 0;
@ -692,6 +699,7 @@ function ComicBook(id, srcs, opts) {
is_double_page_spread = (page.width > page.height); // need to run double page check again here as we are going backwards
if (pointer > 0) {
console.log(pointer);
pointer -= (options.displayMode === "single" || is_double_page_spread) ? 1 : 2;
this.drawPage();
}