mirror of https://github.com/piskelapp/piskel.git
125 lines
4.3 KiB
JavaScript
125 lines
4.3 KiB
JavaScript
/* @file Image and Animation import service supporting the import dialog. */
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(function () {
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var ns = $.namespace('pskl.service');
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/**
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* Image an animation import service supporting the import dialog.
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* @param {!PiskelController} piskelController
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* @param {!PreviewController} previewController
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* @constructor
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*/
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ns.ImportService =
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function (piskelController, previewController) {
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this.piskelController_ = piskelController;
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this.previewController_ = previewController;
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};
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/**
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* Given an image object and some options, create a new Piskel and open it
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* for editing.
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* @param {!Image} image
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* @param {!Object} options
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* @param {!string} options.importType - 'single' if not spritesheet
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* @param {!number} options.frameSizeX
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* @param {!number} options.frameSizeY
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* @param {number} [options.frameOffsetX] only used in spritesheet imports.
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* @param {number} [options.frameOffsetY] only used in spritesheet imports.
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* @param {!boolean} options.smoothing
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* @param {function} [onComplete]
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*/
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ns.ImportService.prototype.newPiskelFromImage = function (image, options, onComplete) {
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onComplete = onComplete || Constants.EMPTY_FUNCTION;
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var importType = options.importType;
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var frameSizeX = options.frameSizeX;
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var frameSizeY = options.frameSizeY;
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var frameOffsetX = options.frameOffsetX;
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var frameOffsetY = options.frameOffsetY;
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var gifLoader = new window.SuperGif({
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gif: image
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});
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gifLoader.load({
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success: function () {
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var images = gifLoader.getFrames().map(function (frame) {
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return pskl.utils.CanvasUtils.createFromImageData(frame.data);
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});
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if (importType === 'single' || images.length > 1) {
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// Single image import or animated gif
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this.createPiskelFromImages_(images, frameSizeX, frameSizeY, options.smoothing);
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} else {
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// Spritesheet
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var frameImages = this.createImagesFromSheet_(images[0]);
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this.createPiskelFromImages_(frameImages, frameSizeX, frameSizeY, options.smoothing);
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}
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onComplete();
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}.bind(this),
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error: function () {
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if (importType === 'single') {
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// Single image
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this.createPiskelFromImages_([image], frameSizeX, frameSizeY, options.smoothing);
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} else {
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// Spritesheet
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var frameImages = this.createImagesFromSheet_(image, frameSizeX, frameSizeY, frameOffsetX, frameOffsetY);
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this.createPiskelFromImages_(frameImages, frameSizeX, frameSizeY, options.smoothing);
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}
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onComplete();
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}.bind(this)
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});
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};
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/**
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* @param {!Image} image
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* @param {!number} frameSizeX
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* @param {!number} frameSizeY
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* @param {!number} frameOffsetX
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* @param {!number} frameOffsetY
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* @returns {canvas[]}
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* @private
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*/
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ns.ImportService.prototype.createImagesFromSheet_ = function (image,
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frameSizeX, frameSizeY, frameOffsetX, frameOffsetY) {
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return pskl.utils.CanvasUtils.createFramesFromImage(
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image,
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frameOffsetX,
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frameOffsetY,
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frameSizeX,
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frameSizeY,
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/*useHorizonalStrips=*/ true,
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/*ignoreEmptyFrames=*/ true);
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};
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/**
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* @param {canvas[]} images
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* @param {!number} frameSizeX
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* @param {!number} frameSizeY
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* @param {!boolean} smoothing
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* @private
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*/
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ns.ImportService.prototype.createPiskelFromImages_ = function (images,
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frameSizeX, frameSizeY, smoothing) {
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var frames = this.createFramesFromImages_(images, frameSizeX, frameSizeY, smoothing);
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var layer = pskl.model.Layer.fromFrames('Layer 1', frames);
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var descriptor = new pskl.model.piskel.Descriptor('Imported piskel', '');
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var piskel = pskl.model.Piskel.fromLayers([layer], descriptor);
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this.piskelController_.setPiskel(piskel);
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this.previewController_.setFPS(Constants.DEFAULT.FPS);
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};
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/**
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* @param {!canvas[]} images
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* @param {!number} frameSizeX
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* @param {!number} frameSizeY
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* @param {!boolean} smoothing
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* @returns {pskl.model.Frame[]}
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* @private
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*/
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ns.ImportService.prototype.createFramesFromImages_ = function (images, frameSizeX, frameSizeY, smoothing) {
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return images.map(function (image) {
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var resizedImage = pskl.utils.ImageResizer.resize(image, frameSizeX, frameSizeY, smoothing);
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return pskl.utils.FrameUtils.createFromImage(resizedImage);
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});
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};
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})();
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