yetangitu/canvas-based-HTML5-Comic-Book-Reader
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moved enhancement parameters into the options array, allows for easy setting on init

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Bala Clark 2010-07-15 13:51:13 +00:00
parent 293810e050
commit 88b8d57db3
1 changed files with 13 additions and 15 deletions
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26
lib/ComicBook.js
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@ -6,6 +6,7 @@
Fo sho: Fo sho:
- page controls - page controls
- chrome frame / ExplorerCanvas - chrome frame / ExplorerCanvas
- show loading graphic & then fade in new page if user is ahead of the last loaded page
Nice 2 have: Nice 2 have:
- remember position (use localStorage) - remember position (use localStorage)
@ -46,7 +47,8 @@ function ComicBook(id, srcs, opts) {
var defaults = { var defaults = {
displayMode: "double", // single / double displayMode: "double", // single / double
zoomMode: "fitWidth", // manual / fitWidth zoomMode: "fitWidth", // manual / fitWidth
manga: false // true / false manga: false, // true / false
enhance: {}
}; };
var options = merge(defaults, opts); // options array for internal use var options = merge(defaults, opts); // options array for internal use
@ -61,7 +63,6 @@ function ComicBook(id, srcs, opts) {
var loaded = 0; // the amount of images that have been loaded so far var loaded = 0; // the amount of images that have been loaded so far
var scale = 1; // page zoom scale, 1 = 100% var scale = 1; // page zoom scale, 1 = 100%
var enhancements = {};
/** /**
* Figure out the cursor position relative to the canvas. * Figure out the cursor position relative to the canvas.
@ -182,8 +183,6 @@ function ComicBook(id, srcs, opts) {
* *
* TODO: break this down into drawSinglePage() & drawDoublePage()? * TODO: break this down into drawSinglePage() & drawDoublePage()?
* TODO: if the current browser doesn't have canvas support, use img tags * TODO: if the current browser doesn't have canvas support, use img tags
*
* @param applyEnhancements {boolean}
*/ */
ComicBook.prototype.drawPage = function() { ComicBook.prototype.drawPage = function() {
@ -267,7 +266,7 @@ function ComicBook(id, srcs, opts) {
if (options.displayMode === "double" && typeof page2 === "object") { context.drawImage(page2, page_width + offsetW, offsetH, page_width, page_height); } if (options.displayMode === "double" && typeof page2 === "object") { context.drawImage(page2, page_width + offsetW, offsetH, page_width, page_height); }
// apply any image enhancements previously defined // apply any image enhancements previously defined
$.each(enhancements, function(action, options){ $.each(options.enhance, function(action, options){
ComicBook.prototype.enhance[action](options); ComicBook.prototype.enhance[action](options);
}); });
}; };
@ -316,9 +315,9 @@ function ComicBook(id, srcs, opts) {
*/ */
reset: function (method) { reset: function (method) {
if (!method) { if (!method) {
enhancements = {}; options.enhance = {};
} else { } else {
delete enhancements[method]; delete options.enhance[method];
} }
ComicBook.prototype.drawPage(); ComicBook.prototype.drawPage();
}, },
@ -332,15 +331,15 @@ function ComicBook(id, srcs, opts) {
* *
* @param {Object} options * @param {Object} options
*/ */
brightness: function (options, reset) { brightness: function (params, reset) {
if (reset !== false) { this.reset("brightness"); } if (reset !== false) { this.reset("brightness"); }
// merge user options with defaults // merge user options with defaults
var opts = merge({ brightness: 0, contrast: 0 }, options); var opts = merge({ brightness: 0, contrast: 0 }, params);
// remember options for later // remember options for later
enhancements.brightness = options; options.enhance.brightness = options;
// run the enhancement // run the enhancement
Pixastic.process(canvas, "brightness", { Pixastic.process(canvas, "brightness", {
@ -356,7 +355,7 @@ function ComicBook(id, srcs, opts) {
* Force black and white * Force black and white
*/ */
desaturate: function () { desaturate: function () {
enhancements.desaturate = {}; options.enhance.desaturate = {};
Pixastic.process(canvas, "desaturate", { average : false }); Pixastic.process(canvas, "desaturate", { average : false });
init(); init();
}, },
@ -369,9 +368,9 @@ function ComicBook(id, srcs, opts) {
* *
* @param {Object} options * @param {Object} options
*/ */
sharpen: function (options) { sharpen: function (params) {
var opts = merge({ amount: 0 }, options); var opts = merge({ amount: 0 }, params);
Pixastic.process(canvas, "sharpen", { Pixastic.process(canvas, "sharpen", {
amount: opts.amount amount: opts.amount
@ -444,7 +443,6 @@ $(document).ready(function() {
book = new ComicBook("comic", pages, options); book = new ComicBook("comic", pages, options);
book.draw(); book.draw();
//book.enhance.brightness({ brightness: 100 })
}); });
$(window).resize(function() { $(window).resize(function() {