piskel/js/model/FrameSheet.js
2012-09-16 18:48:32 +02:00

146 lines
4.2 KiB
JavaScript

(function () {
var ns = $.namespace("pskl.model");
ns.FrameSheet = function (height, width) {
this.width = width;
this.height = height;
this.frames = [];
this.currentFrameIndex = 0;
};
ns.FrameSheet.prototype.addEmptyFrame = function () {
this.addFrame(ns.Frame.createEmpty(this.width, this.height));
};
ns.FrameSheet.prototype.addFrame = function (frame) {
this.frames.push(frame);
};
ns.FrameSheet.prototype.getFrameCount = function () {
return this.frames.length;
};
ns.FrameSheet.prototype.getCurrentFrame = function () {
return this.frames[this.currentFrameIndex];
};
ns.FrameSheet.prototype.setCurrentFrameIndex = function (index) {
this.currentFrameIndex = index;
$.publish(Events.CURRENT_FRAME_SET, [this.getCurrentFrame()]);
$.publish(Events.FRAMESHEET_RESET); // Is it no to overkill to have this here ?
};
ns.FrameSheet.prototype.getUsedColors = function() {
var colors = {};
for (var frameIndex=0; frameIndex < this.frames.length; frameIndex++) {
var frame = this.frames[frameIndex];
for (var i = 0, width = frame.getWidth(); i < width ; i++) {
var line = frame[i];
for (var j = 0, height = frame.getHeight() ; j < height ; j++) {
var pixel = frame.getPixel(i, j);
colors[pixel] = pixel;
}
}
}
return colors;
};
// Could be used to pass around model using long GET param (good enough for simple models) and
// do some temporary locastorage
ns.FrameSheet.prototype.serialize = function() {
var serializedFrames = [];
for (var i = 0 ; i < this.frames.length ; i++) {
serializedFrames.push(this.frames[i].serialize());
}
return '[' + serializedFrames.join(",") + ']';
//return JSON.stringify(frames);
};
/**
* Load a framesheet from a string that might have been persisted in db / localstorage
* Overrides existing frames.
* @param {String} serialized
*/
ns.FrameSheet.prototype.deserialize = function (serialized) {
try {
var frameConfigurations = JSON.parse(serialized);
this.frames = [];
for (var i = 0 ; i < frameConfigurations.length ; i++) {
var frameCfg = frameConfigurations[i];
this.addFrame(new ns.Frame(frameCfg));
}
if (this.hasFrameAtIndex(0)) {
this.height = this.getFrameByIndex(0).getHeight();
this.width = this.getFrameByIndex(0).getWidth();
this.setCurrentFrameIndex(0);
$.publish(Events.FRAME_SIZE_CHANGED);
}
$.publish(Events.FRAMESHEET_RESET);
} catch (e) {
throw "Could not load serialized framesheet : " + e.message
}
};
ns.FrameSheet.prototype.hasFrameAtIndex = function(index) {
return (index >= 0 && index < this.getFrameCount());
};
ns.FrameSheet.prototype.getFrameByIndex = function(index) {
if (isNaN(index)) {
throw "Bad argument value for getFrameByIndex method: <" + index + ">";
}
if (!this.hasFrameAtIndex(index)) {
throw "Out of bound index for frameSheet object.";
}
return this.frames[index];
};
ns.FrameSheet.prototype.removeFrameByIndex = function(index) {
if(!this.hasFrameAtIndex(index)) {
throw "Out of bound index for frameSheet object.";
}
this.frames.splice(index, 1);
// Current frame index might not be valid anymore
if (!this.hasFrameAtIndex(this.currentFrameIndex)) {
// if not select last frame available
this.setCurrentFrameIndex(this.getFrameCount() - 1);
}
$.publish(Events.FRAMESHEET_RESET);
};
ns.FrameSheet.prototype.duplicateFrameByIndex = function(index) {
var frame = this.getFrameByIndex(index);
this.frames.splice(index + 1, 0, frame.clone());
};
ns.FrameSheet.prototype.moveFrame = function(originIndex, destinationIndex) {
var frameToMove = this.getFrameByIndex(originIndex);
this.frames.splice(destinationIndex, 0,frameToMove);
if(destinationIndex <= originIndex) {
originIndex++;
}
this.removeFrameByIndex(originIndex);
};
ns.FrameSheet.prototype.swapFrames = function(indexFrame1, indexFrame2) {
if(isNaN(indexFrame1) || isNaN(indexFrame1) ||
(!this.hasFrameAtIndex(indexFrame1) && !this.hasFrameAtIndex(indexFrame2))) {
throw "Bad indexes for swapFrames Framesheet function.";
}
if(indexFrame1 == indexFrame2) {
return;
}
else {
var swapFrame = this.frames[indexFrame1];
this.frames[indexFrame1] = this.frames[indexFrame2];
this.frames[indexFrame2] = swapFrame;
}
};
})();