Initial commit

SaveLayers.jsx

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+// NAME: 
+// SaveLayers
+
+// DESCRIPTION: 
+// Saves each layer in the active document to a PNG or JPG file named after the layer. 
+// These files will be created in the current document folder.
+
+// REQUIRES: 
+// Adobe Photoshop CS2 or higher
+
+// VERSIONS:
+// 27 March 2013 by Robin Parmar ([email protected])
+// preferences stored in object
+// auto-increment file names to prevent collisions
+// properly handles layer groups
+// header added
+// code comments added
+// main() now has error catcher
+// counts number of layers
+// many little code improvements
+
+// 26 Sept 2012 by Johannes on stackexchange
+// original version
+
+// enable double-clicking from Finder/Explorer (CS2 and higher)
+#target photoshop
+app.bringToFront();
+
+function main() {
+ // two quick checks
+ if(!okDocument()) {
+ alert("Document must be a layered PSD.");
+ return; 
+ }
+ var ok = confirm("This document contains " + activeDocument.layers.length + " top level layers.\nBe aware that large numbers of layers will take some time!\nContinue?");
+ if(!ok) return
+
+ // user preferences
+ prefs = new Object();
+ prefs.fileType = "";
+ prefs.fileQuality = 0;
+ prefs.filePath = app.activeDocument.path;
+ prefs.count = 0;
+
+ //instantiate dialogue
+ Dialog();
+
+ saveLayers(activeDocument);
+ alert("Saved " + prefs.count + " files.");
+}
+
+function saveLayers(ref) {
+ var len = ref.layers.length;
+
+ // rename layers top to bottom
+ for (var i = 0; i < len; i++) {
+ var layer = ref.layers[i];
+
+ if (layer.typename == 'LayerSet') {
+ // recurse if current layer is a group
+ saveLayers(layer);
+ } else {
+ // otherwise make sure the layer is visible and save it
+ for(var j = 0 ; j < len ; j++ ) {
+ if( ref.layers[j] == layer ) {
+ layer.visible = true;
+ } else {
+ layer.visible = false;
+ }
+ }
+ saveImage(layer.name);
+ }
+ }
+}
+
+function saveImage(layerName) {
+ var handle = getUniqueName(prefs.filePath + "/" + layerName);
+ prefs.count++;
+
+ if(prefs.fileType=="PNG") {
+ SavePNG(handle); 
+ } else {
+ SaveJPEG(handle); 
+ }
+}
+
+function getUniqueName(fileroot) { 
+ // form a full file name
+ // if the file name exists, a numeric suffix will be added to disambiguate
+
+ var filename = fileroot;
+ for (var i=1; i<100; i++) {
+ var handle = File(filename + "." + prefs.fileType); 
+ if(handle.exists) {
+ filename = fileroot + "-" + padder(i, 3);
+ } else {
+ return handle; 
+ }
+ }
+} 
+
+function padder(input, padLength) {
+ // pad the input with zeroes up to indicated length
+ var result = (new Array(padLength + 1 - input.toString().length)).join('0') + input;
+ return result;
+}
+
+function SavePNG(saveFile) { 
+ pngSaveOptions = new PNGSaveOptions(); 
+ activeDocument.saveAs(saveFile, pngSaveOptions, true, Extension.LOWERCASE); 
+} 
+
+function SaveJPEG(saveFile) { 
+ jpegSaveOptions = new JPEGSaveOptions(); 
+ jpegSaveOptions.quality = selectedQuality;
+ activeDocument.saveAs(saveFile, jpegSaveOptions, true, Extension.LOWERCASE); 
+} 
+
+function Dialog() {
+ // build dialogue
+ var dlg = new Window ('dialog', 'Select type'); 
+ dlg.saver = dlg.add("dropdownlist", undefined, ""); 
+ dlg.quality = dlg.add("dropdownlist", undefined, "");
+
+ // file type
+ var saveOpt = [];
+ saveOpt[0] = "PNG"; 
+ saveOpt[1] = "JPG"; 
+ for (var i=0, len=saveOpt.length; i<len; i++) {
+ dlg.saver.add ("item", "Save to " + saveOpt[i]);
+ }; 
+
+ // trigger function
+ dlg.saver.onChange = function() {
+ prefs.fileType = saveOpt[parseInt(this.selection)]; 
+ // turn on additional option for JPG
+ if(prefs.fileType==saveOpt[1]){
+ dlg.quality.show();
+ } else {
+ dlg.quality.hide();
+ }
+ }; 
+
+ // jpg quality
+ var qualityOpt = [];
+ for(var i=12; i>=1; i--) {
+ qualityOpt[i] = i;
+ dlg.quality.add ('item', "" + i);
+ }; 
+
+ // trigger function
+ dlg.quality.onChange = function() {
+ prefs.fileQuality = qualityOpt[12-parseInt(this.selection)];
+ };
+
+ // remainder of UI
+ var uiButtonRun = "Continue"; 
+
+ dlg.btnRun = dlg.add("button", undefined, uiButtonRun ); 
+ dlg.btnRun.onClick = function() { 
+ this.parent.close(0); }; 
+
+ dlg.orientation = 'column'; 
+
+ dlg.saver.selection = dlg.saver.items[0] ;
+ dlg.quality.selection = dlg.quality.items[0] ;
+ dlg.center(); 
+ dlg.show();
+}
+
+function okDocument() {
+ // check that we have a valid document
+
+ if (!documents.length) return false;
+
+ var thisDoc = app.activeDocument; 
+ var fileExt = decodeURI(thisDoc.name).replace(/^.*\./,''); 
+ return fileExt.toLowerCase() == 'psd'
+}
+
+function wrapper() {
+ function showError(err) {
+ alert(err + ': on line ' + err.line, 'Script Error', true);
+ }
+
+ try {
+ // suspend history for CS3 or higher
+ if (parseInt(version, 10) >= 10) {
+ activeDocument.suspendHistory('Save Layers', 'main()');
+ } else {
+ main();
+ }
+ } catch(e) {
+ // report errors unless the user cancelled
+ if (e.number != 8007) showError(e);
+ }
+}
+
+wrapper();