piskel/src/js/controller/dialogs/ImportImageController.js

145 lines
4.7 KiB
JavaScript
Raw Normal View History

(function () {
var ns = $.namespace('pskl.controller.dialogs');
var PREVIEW_HEIGHT = 60;
ns.ImportImageController = function (piskelController) {
this.importedImage_ = null;
this.file_ = null;
};
pskl.utils.inherit(ns.ImportImageController, ns.AbstractDialogController);
ns.ImportImageController.prototype.init = function (file) {
this.superclass.init.call(this);
this.file_ = file;
this.importPreview = $('.import-section-preview');
this.fileNameContainer = $('.import-image-file-name');
this.resizeWidth = $('[name=resize-width]');
this.resizeHeight = $('[name=resize-height]');
this.smoothResize = $('[name=smooth-resize-checkbox]');
this.resizeWidth.keyup(this.onResizeInputKeyUp_.bind(this, 'width'));
this.resizeHeight.keyup(this.onResizeInputKeyUp_.bind(this, 'height'));
this.importImageForm = $('[name=import-image-form]');
this.importImageForm.submit(this.onImportFormSubmit_.bind(this));
pskl.utils.FileUtils.readImageFile(this.file_, this.onImageLoaded_.bind(this));
};
ns.ImportImageController.prototype.onImportFormSubmit_ = function (evt) {
evt.originalEvent.preventDefault();
this.importImageToPiskel_();
};
ns.ImportImageController.prototype.onResizeInputKeyUp_ = function (from, evt) {
if (this.importedImage_) {
this.synchronizeResizeFields_(evt.target.value, from);
}
};
ns.ImportImageController.prototype.synchronizeResizeFields_ = function (value, from) {
value = parseInt(value, 10);
if (isNaN(value)) {
value = 0;
}
var height = this.importedImage_.height, width = this.importedImage_.width;
if (from === 'width') {
this.resizeHeight.val(Math.round(value * height / width));
} else {
this.resizeWidth.val(Math.round(value * width / height));
}
};
ns.ImportImageController.prototype.onImageLoaded_ = function (image) {
this.importedImage_ = image;
var w = this.importedImage_.width,
h = this.importedImage_.height;
// FIXME : We remove the onload callback here because JsGif will insert
// the image again and we want to avoid retriggering the image onload
this.importedImage_.onload = function () {};
var fileName = this.extractFileNameFromPath_(this.file_.name);
this.fileNameContainer.html(fileName);
this.resizeWidth.val(w);
this.resizeHeight.val(h);
this.importPreview.width('auto');
this.importPreview.html('');
this.importPreview.append(this.createImagePreview_());
};
ns.ImportImageController.prototype.createImagePreview_ = function () {
var image = document.createElement('IMG');
image.src = this.importedImage_.src;
image.setAttribute('height', PREVIEW_HEIGHT);
return image;
};
ns.ImportImageController.prototype.extractFileNameFromPath_ = function (path) {
var parts = [];
if (path.indexOf('/') !== -1) {
parts = path.split('/');
} else if (path.indexOf('\\') !== -1) {
parts = path.split('\\');
} else {
parts = [path];
}
return parts[parts.length-1];
};
ns.ImportImageController.prototype.importImageToPiskel_ = function () {
var image = this.importedImage_;
if (image) {
if (window.confirm('You are about to create a new Piskel, unsaved changes will be lost.')) {
var gifLoader = new window.SuperGif({
gif : image
});
gifLoader.load({
success : function(){
var images = gifLoader.getFrames().map(function (frame) {
return pskl.CanvasUtils.createFromImageData(frame.data);
});
this.createPiskelFromImages_(images);
this.closeDialog();
}.bind(this),
error : function () {
this.createPiskelFromImages_([image]);
this.closeDialog();
}.bind(this)
});
}
}
};
ns.ImportImageController.prototype.createFramesFromImages_ = function (images) {
var w = this.resizeWidth.val();
var h = this.resizeHeight.val();
var smoothing = !!this.smoothResize.prop('checked');
var frames = images.map(function (image) {
var resizedImage = pskl.utils.ImageResizer.resize(image, w, h, smoothing);
return pskl.utils.FrameUtils.createFromImage(resizedImage);
});
return frames;
};
ns.ImportImageController.prototype.createPiskelFromImages_ = function (images) {
var frames = this.createFramesFromImages_(images);
var layer = pskl.model.Layer.fromFrames('Layer 1', frames);
var descriptor = new pskl.model.piskel.Descriptor('Imported piskel', '');
var piskel = pskl.model.Piskel.fromLayers([layer], descriptor);
pskl.app.piskelController.setPiskel(piskel);
pskl.app.animationController.setFPS(Constants.DEFAULT.FPS);
};
})();