Crop & Save layers

Question

I am always writing small one-time only tools to process graphics, that are used for one project and then made redundant.

I would like to know if I can achive the following in Photoshop scripting to save me time:

I want a script to go through all layers of a PSD file, crop away all transparency borders of every layer, and save out layers as PNG.

I would also like to keep note of the size of the left and top transparent border that was cropped out, so that I can write out a text file, with x and y co-ords, so that I can reassemble all the layers in their exact position later on in my project.

This would really save me a lot of time, and would be great if I can achieve this in PS scripting.

I worked out file saving, but getting the x & y co-ords of the crop[ped layer still eludes me.

Any help or link to a similar script would be greatly appreciated.

Much thanks.

Paul Riggott · Accepted Answer

Now I need to know how to loop through all layers and set the layer active & it's done!

You can set the ruler units then restore them back to what they were...

var startRulerUnits = app.preferences.rulerUnits;
app.preferences.rulerUnits = Units.PIXELS;
//code here
 
app.preferences.rulerUnits =  startRulerUnits;

For selecting all layers, see ..

http://www.scriptsrus.talktalk.net/Layer%20Saver.htm

Maybe you could modifiy it to add your own features?

Paul Riggott · Answer

Before you crop the layer you can use the layer bounds to get the x, y position...

Make sure ruler units are set to pixels.

var LB = activeDocument.activeLayer.bounds;

var x = LB[0].value;

var y = LB[1].value;

These values can then be written to file.

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