piskel/js/controller/settings/GifExportController.js
Julian Descottes ca427e0853 Dev environment : closure compiler + jshint update
Fixed error raised by closure compiler
Added es3 option to jshint (detect trailing commas)
Added curly option to jshint (missing curly braces for if/for blocks)
Removed trailing whitespaces (not enforced through jshint though)
2013-09-28 23:52:51 +02:00

110 lines
3.5 KiB
JavaScript

(function () {
var ns = $.namespace("pskl.controller.settings");
ns.GifExportController = function (piskelController) {
this.piskelController = piskelController;
};
ns.GifExportController.prototype.init = function () {
this.radioTemplate_ = pskl.utils.Template.get("export-gif-radio-template");
this.previewContainerEl = document.querySelectorAll(".export-gif-preview div")[0];
this.radioGroupEl = document.querySelectorAll(".gif-export-radio-group")[0];
this.uploadFormJQ = $("[name=gif-export-upload-form]");
this.uploadFormJQ.submit(this.upload.bind(this));
this.initRadioElements_();
};
ns.GifExportController.prototype.upload = function (evt) {
evt.originalEvent.preventDefault();
var selectedDpi = this.getSelectedDpi_(),
fps = pskl.app.animationController.fps,
dpi = selectedDpi;
this.renderAsImageDataAnimatedGIF(dpi, fps, function (imageData) {
this.updatePreview_(imageData);
this.previewContainerEl.classList.add("preview-upload-ongoing");
pskl.app.imageUploadService.upload(imageData, function (imageUrl) {
this.updatePreview_(imageUrl);
this.previewContainerEl.classList.remove("preview-upload-ongoing");
}.bind(this));
}.bind(this));
};
ns.GifExportController.prototype.updatePreview_ = function (src) {
this.previewContainerEl.innerHTML = "<img style='max-width:240px;' src='"+src+"'/>";
};
ns.GifExportController.prototype.getSelectedDpi_ = function () {
var radiosColl = this.uploadFormJQ.get(0).querySelectorAll("[name=gif-dpi]"),
radios = Array.prototype.slice.call(radiosColl,0);
var selectedRadios = radios.filter(function(radio) {return !!radio.checked;});
if (selectedRadios.length == 1) {
return selectedRadios[0].value;
} else {
throw "Unexpected error when retrieving selected dpi";
}
};
ns.GifExportController.prototype.initRadioElements_ = function () {
var dpis = [
[1],
[5],
[10,true], //default
[20]
];
for (var i = 0 ; i < dpis.length ; i++) {
var dpi = dpis[i];
var radio = this.createRadioForDpi_(dpi);
this.radioGroupEl.appendChild(radio);
}
};
ns.GifExportController.prototype.createRadioForDpi_ = function (dpi) {
var label = dpi[0]*this.piskelController.getWidth() + "x" + dpi[0]*this.piskelController.getHeight();
var value = dpi[0];
var radioHTML = pskl.utils.Template.replace(this.radioTemplate_, {value : value, label : label});
var radio = pskl.utils.Template.createFromHTML(radioHTML);
if (dpi[1]) {
radio.getElementsByTagName("input")[0].setAttribute("checked", "checked");
}
return radio;
};
ns.GifExportController.prototype.blobToBase64_ = function(blob, cb) {
var reader = new FileReader();
reader.onload = function() {
var dataUrl = reader.result;
cb(dataUrl);
};
reader.readAsDataURL(blob);
};
ns.GifExportController.prototype.renderAsImageDataAnimatedGIF = function(dpi, fps, cb) {
var gif = new window.GIF({
workers: 2,
quality: 10,
width: this.piskelController.getWidth()*dpi,
height: this.piskelController.getHeight()*dpi
});
for (var i = 0; i < this.piskelController.getFrameCount(); i++) {
var frame = this.piskelController.getFrameAt(i);
var renderer = new pskl.rendering.CanvasRenderer(frame, dpi);
gif.addFrame(renderer.render(), {
delay: 1000 / fps
});
}
gif.on('finished', function(blob) {
this.blobToBase64_(blob, cb);
}.bind(this));
gif.render();
};
})();