pixel-editor/js/FileManager.js
2022-12-27 18:18:38 +01:00

617 lines
25 KiB
JavaScript

// localStorage.setItem("lpe-cache",`{}`)
const FileManager = (() => {
// Binding the browse holder change event to file loading
const browseHolder = document.getElementById('open-image-browse-holder');
const browsePaletteHolder = document.getElementById('load-palette-browse-holder');
const importImageHolder = document.getElementById('import-image-browse-holder');
Events.on('change', browseHolder, loadFile);
Events.on('change', browsePaletteHolder, loadPalette);
Events.on('change', importImageHolder, loadImage);
Events.on('click', 'export-confirm', exportProject);
Events.on("click", "save-project-confirm", saveProject);
function openSaveProjectWindow() {
//create name
let selectedPalette = Util.getText('palette-button');
if (selectedPalette != 'Choose a palette...'){
var paletteAbbreviation = palettes[selectedPalette].abbreviation;
var fileName = 'pixel-'+paletteAbbreviation+'-'+currFile.canvasSize[0]+'x'+currFile.canvasSize[1];
} else {
var fileName = 'pixel-'+currFile.canvasSize[0]+'x'+currFile.canvasSize[1];
selectedPalette = 'none';
}
Util.setValue('lpe-file-name', fileName);
Dialogue.showDialogue('save-project', false);
}
function openPixelExportWindow() {
let selectedPalette = Util.getText('palette-button');
if (selectedPalette != 'Choose a palette...'){
var paletteAbbreviation = palettes[selectedPalette].name;
var fileName = 'pixel-'+paletteAbbreviation+'-'+currFile.canvasSize[0]+'x'+currFile.canvasSize[1]+'.png';
} else {
var fileName = 'pixel-'+currFile.canvasSize[0]+'x'+currFile.canvasSize[1]+'.png';
selectedPalette = 'none';
}
Util.setValue('export-file-name', fileName);
Dialogue.showDialogue('export', false);
}
function saveProject() {
// Get name
// debugger;
let fileName = Util.getValue("lpe-file-name") + ".lpe";
let selectedPalette = Util.getText('palette-button');
//set download link
const linkHolder = document.getElementById('save-project-link-holder');
// create file content
const content = getProjectData();
linkHolder.href = 'data:text/plain;charset=utf-8,' + encodeURIComponent(content);
linkHolder.download = fileName;
linkHolder.click();
if (typeof ga !== 'undefined')
ga('send', 'event', 'Pixel Editor Save', selectedPalette, currFile.canvasSize[0]+'/'+currFile.canvasSize[1]); /*global ga*/
LayerList.closeOptionsMenu(); // is this the right place for this?
}
function exportProject() {
if (EditorState.documentCreated()) {
//create name
let fileName = Util.getValue("export-file-name");
//set download link
let linkHolder = document.getElementById('save-image-link-holder');
// Creating a tmp canvas to flatten everything
let exportCanvas = document.createElement("canvas");
let emptyCanvas = document.createElement("canvas");
let layersCopy = currFile.layers.slice();
exportCanvas.getContext("2d").willReadFrequently = true;
emptyCanvas.getContext("2d").willReadFrequently = true;
exportCanvas.width = currFile.canvasSize[0];
exportCanvas.height = currFile.canvasSize[1];
emptyCanvas.width = currFile.canvasSize[0];
emptyCanvas.height = currFile.canvasSize[1];
// Sorting the layers by z index
layersCopy.sort((a, b) => (a.canvas.style.zIndex > b.canvas.style.zIndex) ? 1 : -1);
// Merging every layer on the export canvas
for (let i=0; i<layersCopy.length; i++) {
if (layersCopy[i].hasCanvas() && layersCopy[i].isVisible) {
LayerList.mergeLayers(exportCanvas.getContext('2d'), layersCopy[i].context);
}
// I'm not going to find out why the layer ordering screws up if you don't copy
// a blank canvas when layers[i] is not set as visible, but if you have time to
// spend, feel free to investigate (comment the else, create 3 layers: hide the
// middle one and export, the other 2 will be swapped in their order)
else {
LayerList.mergeLayers(exportCanvas.getContext('2d'), emptyCanvas.getContext('2d'));
}
}
linkHolder.href = exportCanvas.toDataURL();
linkHolder.download = fileName;
linkHolder.click();
emptyCanvas.remove();
exportCanvas.remove();
//track google event
if (typeof ga !== 'undefined')
ga('send', 'event', 'Pixel Editor Export', selectedPalette, currFile.canvasSize[0]+'/'+currFile.canvasSize[1]); /*global ga*/
}
}
function open() {
//if a document exists
if (EditorState.documentCreated()) {
//check if the user wants to overwrite
if (confirm('Opening a pixel will discard your current one. Are you sure you want to do that?'))
//open file selection dialog
document.getElementById('open-image-browse-holder').click();
}
else
//open file selection dialog
document.getElementById('open-image-browse-holder').click();
}
function localStorageCheck() {
return !!localStorage.getItem("lpe-cache");
}
function localStorageSave() {
const lpeStr = getProjectData();
const lpe = JSON.parse(lpeStr);
console.log('BEFORE JSON.stringify(lpe.colors,null,4) === ',JSON.stringify(lpe.colors,null,4));
console.log([...ColorModule.getCurrentPalette()]);
if(lpe.colors.length < 1)lpe.colors = [...ColorModule.getCurrentPalette()];
if(lpe.colors.length < 1)lpe.colors.push("#000000");
console.log('AFTER JSON.stringify(lpe.colors,null,4) === ',JSON.stringify(lpe.colors,null,4));
if(!lpe.canvasWidth)lpe.canvasWidth = 16;
if(!lpe.canvasHeight)lpe.canvasHeight = 16;
console.log('LPE saved === ',lpe);
localStorage.setItem("lpe-cache", JSON.stringify(lpe));
}
function localStorageReset() {
localStorage.setItem("lpe-cache", JSON.stringify({
"canvasWidth":16,
"canvasHeight":16,
"editorMode":"Advanced",
"colors":["#000000","#0b6082","#1d8425","#cc1919"],
"selectedLayer":0,
"layers":[
{"canvas":{},"context":{"mozImageSmoothingEnabled":false},"isSelected":true,"isVisible":true,"isLocked":false,"oldLayerName":null,"menuEntry":{},"id":"layer0","name":"Layer 0","src":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAAXNSR0IArs4c6QAAAHZJREFUOE9jZKAQMFKon4EuBvxHcyWKpdhcgK4BpB+nS9ElYJqJ9hqyQpI1ozsNZABRNnMnNIEt+7qgjhGrBpgCWOCBFKJHN0gNTgOQFSPbhi5OlAHYEhpBL+DThO4tgoGGHB7YwgKvAbj8j+xCgi4glNkoNgAA3JApEbHObDkAAAAASUVORK5CYII="},
{"canvas":{},"context":{"mozImageSmoothingEnabled":false},"isSelected":false,"isVisible":true,"isLocked":false,"oldLayerName":null,"menuEntry":{},"id":"layer1","name":"Layer 1","src":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAAXNSR0IArs4c6QAAAGNJREFUOE9jZKAQMCLrl21R/Q/iP665jSKOzw7qGgCyCeQKsl0AM4AUb2D1KymuoJ0BxHoDZ3QRG6V445uYsCBoACGvEExxhFxBlAH4XEHQAEKpkygDkFMoumuINgCWI9HDBAChJjwRzAXQUwAAAABJRU5ErkJggg=="},
{"canvas":{},"context":{"mozImageSmoothingEnabled":false},"isSelected":false,"isVisible":true,"isLocked":false,"oldLayerName":null,"menuEntry":{},"id":"layer2","name":"Layer 2","src":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAAXNSR0IArs4c6QAAAGNJREFUOE9jZKAQMJKi/4yk5H+YepPnz8F68RqArAFdI4yP1QBsNuFyKYYBMM0wJxLyIlYDiNWMNQxALhimBuCKUoKBSChKcRpASCPOhESsRoIGEBuVKF4g1XaMhERqMgYZAACIaEgR0hnFxgAAAABJRU5ErkJggg=="}
]
}));
}
function defaultLPE(w,h,colors) {
return {
"canvasWidth":w,
"canvasHeight":h,
"editorMode":"Advanced",
colors,
"selectedLayer":0,
"layers":[
{"canvas":{},"context":{"mozImageSmoothingEnabled":false},"isSelected":true,"isVisible":true,"isLocked":false,"oldLayerName":null,"menuEntry":{},"id":"layer0","name":"Layer 0","src":emptyCanvasSrc(w,h)}
]
};
function emptyCanvasSrc(w,h) {
const canvas = document.createElement('canvas');
canvas.width = w;
canvas.height = h;
return canvas.toDataURL();
}
}
function localStorageLoad() {
////console.log("loading from localStorage");
////console.log('JSON.parse(localStorage.getItem("lpe-cache") ?? "{}") === ',JSON.parse(localStorage.getItem("lpe-cache") ?? "{}"));
const lpe = JSON.parse(localStorage.getItem("lpe-cache") ?? "{}");
//console.log('LPE loaded === ',lpe);
return lpe;
}
function loadFile() {
let fileName = document.getElementById("open-image-browse-holder").value;
// Getting the extension
let extension = (fileName.substring(fileName.lastIndexOf('.')+1, fileName.length) || fileName).toLowerCase();
if (browseHolder.files && browseHolder.files[0]) {
// Checking if the extension is supported
if (extension == 'png' || extension == 'gif' || extension == 'lpe') {
// If it's a Lospec Pixel Editor tm file, I load the project
if (extension == 'lpe') {
openProject();
// openFile();
}
else {
openFile();
}
}
else alert('Only .LPE project files, PNG and GIF files are allowed at this time.');
}
browseHolder.value = null;
}
function openFile() {
//load file
var fileReader = new FileReader();
fileReader.onload = function(e) {
var img = new Image();
img.onload = function() {
//create a new pixel with the images dimentions
console.log('this === ',this);
Startup.newPixel({
canvasWidth: this.width,
canvasHeight: this.height
});
EditorState.switchMode('Advanced');
//draw the image onto the canvas
currFile.currentLayer.context.drawImage(img, 0, 0);
ColorModule.createPaletteFromLayers();
//track google event
if (typeof ga !== 'undefined')
ga('send', 'event', 'Pixel Editor Load', colorPalette.length, this.width+'/'+this.height); /*global ga*/
};
img.src = e.target.result;
};
fileReader.readAsDataURL(browseHolder.files[0]);
}
function openProject(lpeData) {
console.log('lpeData === ',lpeData);
// Getting all the data
if(lpeData){
_parseLPE(lpeData);
} else {
let file = browseHolder.files[0];
let reader = new FileReader();
// Converting the data to a json object and creating a new pixel (see _newPixel.js for more)
reader.onload = function (e) {
console.log('this === ',this);
console.log('e === ',e);
let dictionary = JSON.parse(e.target.result);
console.log('FileManager.js => openProject => loaded lpe dictionary === ',dictionary);
_parseLPE(dictionary);
}
reader.readAsText(file, "UTF-8");
}
function _parseLPE(dictionary) {
Startup.newPixel(dictionary);
}
}
function loadFromLPE(dictionary) {
ColorModule.resetPalette();
//console.log('dictionary === ',dictionary);
EditorState.switchMode(dictionary.editorMode ?? 'Advanced');
if(dictionary.colors)ColorModule.createColorPalette(dictionary.colors);
// Startup.newPixel(dictionary);
}
function getProjectData() {
// use a dictionary
let dictionary = {};
// sorting layers by increasing z-index
let layersCopy = currFile.layers.filter(n=>!!n.menuEntry).slice();
dictionary['canvasWidth'] = currFile.canvasSize[0];
dictionary['canvasHeight'] = currFile.canvasSize[1];
dictionary['editorMode'] = EditorState.getCurrentMode();
dictionary.colors = [
...ColorModule.getCurrentPalette()
];
dictionary.layers = layersCopy
.map((n,i)=>{
//console.log('n.name === ',n.name);
if(n.isSelected)dictionary.selectedLayer = i;
return {
...n,
src: n.canvas.toDataURL(),
};
});
return JSON.stringify(dictionary);
}
let fromMenu = false;
function openImportPaletteWindow() {
fromMenu = true;
document.getElementById('load-palette-browse-holder').click();
}
function loadPalette() {
if (browsePaletteHolder.files && browsePaletteHolder.files[0]) {
let file = browsePaletteHolder.files[0];
var fileContentType =
file.type
|| file.name.split('.').slice(-1)[0];
var fileReader = new FileReader();
// dispatch on file type
switch (fileContentType) {
case 'image/png':
case 'image/gif':
fileReader.onload = loadPaletteFromImage;
fileReader.readAsDataURL(browsePaletteHolder.files[0]);
break;
case 'gpl':
fileReader.onload = loadPaletteFromGimp;
fileReader.readAsText(browsePaletteHolder.files[0]);
break;
case 'hex':
fileReader.onload = loadPaletteFromHex;
fileReader.readAsText(browsePaletteHolder.files[0]);
break;
default:
alert('Only PNG, GIF, .hex and .gpl files are supported at this time.');
}
}
browsePaletteHolder.value = null;
}
function addPalette(colors) {
if (fromMenu) {
ColorModule.createColorPalette(colors, clearCurrent=false);
} else {
// From splash screen
// add to palettes so that it can be loaded when they click okay
palettes['Loaded palette'] = {};
palettes['Loaded palette'].colors = colors;
Util.setText('palette-button', 'Loaded palette');
Util.setText('palette-button-splash', 'Loaded palette');
Util.toggle('palette-menu-splash');
}
}
function loadPaletteFromImage(e) {
var img = new Image();
img.onload = function() {
//draw image onto the temporary canvas
var loadPaletteCanvas = document.getElementById('load-palette-canvas-holder');
var loadPaletteContext = loadPaletteCanvas.getContext('2d');
loadPaletteCanvas.width = img.width;
loadPaletteCanvas.height = img.height;
loadPaletteContext.drawImage(img, 0, 0);
//create array to hold found colors
var colorPalette = [];
var imagePixelData = loadPaletteContext.getImageData(0,0,this.width, this.height).data;
//loop through pixels looking for colors to add to palette
for (var i = 0; i < imagePixelData.length; i += 4) {
const newColor = {r:imagePixelData[i],g:imagePixelData[i + 1],b:imagePixelData[i + 2]};
var color = '#' + Color.rgbToHex(newColor);
if (colorPalette.indexOf(color) == -1) {
colorPalette.push(color);
}
}
addPalette(colorPalette);
};
img.src = e.target.result;
}
function loadPaletteFromGimp(e) {
let content = e.target.result;
let colorPalette = content.split(/\r?\n/)
// Skip header line
.slice(1)
.map((line) => line.trim())
.filter((line) => line != "")
// discard comment lines
.filter((line) => !line.startsWith('#'))
// discard meta data lines
.filter((line) => !line.includes(':'))
.map((line) => {
let components = line.split(/\s+/);
if (components.length < 3) {
alert(`Invalid color specification ${line}.`);
return "#000000"
}
let [r, g, b, ...rest] = components;
let color = {
r: parseInt(r),
g: parseInt(g),
b: parseInt(b),
};
if (isNaN(color.r) || isNaN(color.g) || isNaN(color.b)) {
alert(`Invalid color specification ${line}.`);
return "#000000"
}
return '#' + Color.rgbToHex(color);
});
addPalette(colorPalette);
}
function loadPaletteFromHex(e) {
let content = e.target.result;
let colorPalette = content.split(/\r?\n/)
.map((line) => line.trim())
.filter((line) => line != "")
// discard comment lines
.filter((line) => !line.startsWith('#'))
.map((line) => {
if (line.match(/[0-9A-Fa-f]{6}/)) {
return '#' + line;
}
alert(`Invalid hex color ${line}.`);
return '#000000';
});
addPalette(colorPalette);
}
currentImportPivotElement = undefined;
currentImportPivotPosition = 'middle';
isImportWindowInitialized = false;
/**
* Displays the import image window to allow for configurations
* to be made be the image is imported.
*/
function openImportImageWindow() {
// Reset window values.
importImageHolder.value = null;
document.getElementById('import-image-match-size').checked = false;
document.getElementById('import-image-update-palette').checked = false;
document.getElementById('import-image-name').innerText = "";
// Workaround to prevent events from firing twice for the import window.
if (!this.isImportWindowInitialized) {
// Getting the pivot buttons and setting the default pivot selection.
let pivotButtons = document.getElementsByClassName("pivot-button");
this.currentImportPivotElement = document.querySelector('.import-image-location-pivot .rc-selected-pivot');
// Add event handlers for each pivot.
for (let i=0; i < pivotButtons.length; i++) {
Events.on("click", pivotButtons[i], onImportPivotChanged.bind(this));
}
Events.on("click", "select-image", () => document.getElementById('import-image-browse-holder')?.click());
Events.on("click", "import-image-confirm", importImage);
this.isImportWindowInitialized = true;
}
Dialogue.showDialogue('import-image', false);
}
/**
* Loads the image and draws it to the current canvas layer. Called when
* the import image window is finalized.
*/
function importImage() {
if (!importImageHolder.files || importImageHolder.files.length === 0) {
alert('Please select a file before attempting to import.')
return;
}
var fileReader = new FileReader();
// Once the image has been loaded draw the image to the current layer at the top right.
fileReader.onload = (e) => {
var img = new Image();
img.onload = () => {
let shouldResizeCanvas = document.getElementById('import-image-match-size').checked;
let shouldImportColors = document.getElementById('import-image-update-palette').checked;
// Resize the canvas to the image size if the flag was set to true.
if (shouldResizeCanvas) {
currFile.resizeCanvas(null, { x: img.width, y: img.height }, null, false);
}
// Calculate pivot offset and draw the imported image. Ensure the pivot position accounts for the imported images dimensions.
let offset = Util.getPivotPosition(this.currentImportPivotPosition, currFile.canvasSize[0], currFile.canvasSize[1], img.width, img.height);
currFile.currentLayer.context.drawImage(img, offset.x, offset.y);
if (shouldImportColors) {
ColorModule.updatePaletteFromLayers();
}
Dialogue.closeDialogue();
};
img.src = e.target.result;
};
fileReader.readAsDataURL(importImageHolder.files[0]);
}
/**
* Called when the import image holder file input fires an onchange event.
*/
function loadImage() {
if (importImageHolder.files && importImageHolder.files[0]) {
let fileName = document.getElementById("import-image-browse-holder").value;
let extension = Util.getFileExtension(fileName);
// Display the file name in the window.
document.getElementById('import-image-name').innerText = importImageHolder.files[0].name;
// Checking if the extension is supported
if (extension !== 'png') {
alert('Only PNG files are currently allowed to be imported at this time.')
importImageHolder.value = null;
}
}
}
/**
* Called when the selected pivot for the import image is changed.
* @param {*} event The event for the selected pivot.
*/
function onImportPivotChanged(event) {
this.currentImportPivotPosition = event.target.getAttribute("value");
// Setting the selected class
this.currentImportPivotElement.classList.remove("rc-selected-pivot");
this.currentImportPivotElement = event.target;
this.currentImportPivotElement.classList.add("rc-selected-pivot");
}
function upgradeLPE(dictionary) {
console.log('dictionary === ',dictionary);
if(dictionary.color0 && !dictionary.colors) {
dictionary.colors = [];
let colorIdx = 0;
while(dictionary[`color${colorIdx}`]) {
dictionary.colors.push(dictionary[`color${colorIdx}`]);
delete dictionary[`color${colorIdx}`];
colorIdx++;
}
console.log('Object.keys(dictionary) === ',Object.keys(dictionary));
dictionary.layers = Object.keys(dictionary).reduce((r,k,i)=>{
if(k.slice(0,5) === "layer" && dictionary[k]){
if(dictionary[k].isSelected){
dictionary.selectedLayer = r.length;
}
r.push({
...dictionary[k],
src: dictionary[`${k}ImageData`]
});
delete dictionary[k];
delete dictionary[`${k}ImageData`];
}
return r;
},[]);
console.log('dictionary.layers === ',dictionary.layers);
}
console.log('dictionary === ',dictionary);
return dictionary;
}
function toggleCache(elm){
console.log('elm === ',elm);
FileManager.cacheEnabled = !FileManager.cacheEnabled;
localStorage.setItem("lpe-cache-enabled",FileManager.cacheEnabled ? "1" : "0");
elm.textContent = cacheBtnText(FileManager.cacheEnabled);
}
function cacheBtnText(cacheEnabled) {
return `${cacheEnabled ? "Disable" : "Enable"} auto-cache`;
}
const cacheEnabled = !!Number(localStorage.getItem("lpe-cache-enabled"));
document.getElementById("auto-cache-button").textContent = cacheBtnText(cacheEnabled);
const ret = {
cacheEnabled,
loadFromLPE,
toggleCache,
getProjectData,
localStorageReset,
localStorageCheck,
localStorageSave,
localStorageLoad,
upgradeLPE,
defaultLPE,
saveProject,
openProject,
exportProject,
openPixelExportWindow,
openSaveProjectWindow,
openImportImageWindow,
openImportPaletteWindow,
open
}
Object.keys(ret).forEach(k=>{
if(typeof ret[k] === "function"){
const orig = ret[k];
ret[k] = function() {
DEBUG_ARR.push(`called FileManager -> ${k}`);
return orig.call(this,...arguments);
}
}
})
return ret;
})();