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ExportAllVisibleAsPNGAnd2x.jsx

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+
+/***********************************************************************
+
+PHOTOSHOP - LAYER EXPORT TOOL FOR NORMAL IPHONE GRAPHICS AND RETINA DISPLAY GRAPHICS.  
+
+This script assumes you are working with high resolution graphics for the iPhone Retina display eg 960 x 640
+Select the layer you want to export in the layers list in Photoshop.
+1. Click this script (you might have to right click and choose Open With Photoshop, you can make this the default action in Finder by getting file info)
+2. The script will ask you for the name that you want to save this layer as (without file extension, eg background)
+3. The layer is trimmed of any transparent pixels, saved as name@2x.png and name.png in the same folder as oringal PSD document.
+
+Hope you like this script, hit John Ballinger up on Twitter @sponno on from his website www.bluespark.co.nz
+
+Please keep this Attribution here if you are going to redistrubte this code. Thanks
+Creative Commons Attribution 3.0 New Zealand License
+http://creativecommons.org/licenses/by/3.0/nz/     
+
+************************************************************************/
+
+//set unit preferences
+var strtRulerUnits = app.preferences.rulerUnits;
+var strtTypeUnits = app.preferences.typeUnits;
+app.preferences.rulerUnits = Units.PIXELS;
+app.preferences.typeUnits = TypeUnits.PIXELS;
+
+
+/////////////////////////////////////////////////////////////////////////////////////////////
+
+//create a new slideshow package
+function doResizeAndOutput()
+{            
+	var orginalDoc = app.activeDocument;
+
+	// Get the new file name.
+    var fileName = prompt("File Name, No extension, eg background", ""); 
+	if(fileName==null) return; // You clicked cancel.
+
+	// Image save options for PNG
+    var pngOptions = new PNGSaveOptions();
+	pngOptions.interlaced = false;
+
+ 	// Full Size - iPhone Retina Display Size and File Name.        
+	activeDocument.saveAs(File(orginalDoc.path + "/" + fileName + "@2x.png"), pngOptions, true);
+
+   	// Half Size wich is actually normal size.
+ 	activeDocument.resizeImage(null,(app.activeDocument.height/2),(app.activeDocument.width/2),ResampleMethod.BICUBIC);
+	activeDocument.saveAs(File(orginalDoc.path + "/" + fileName + ".png"), pngOptions, true);
+
+	// undo document resize.
+	var baseState = app.activeDocument.historyStates.length - 2;
+	app.activeDocument.activeHistoryState = app.activeDocument.historyStates[baseState];
+
+}      
+
+
+
+//create the slideshow source files
+doResizeAndOutput();