Assuming you have all Guides already set-up and have one layer in PSD file.
Script cuts image into small peaces defined by Guides and names them according to their grid number/letter. Rows are named with numbers [0-9] and columns by letters [A-Z]. Each slice is saved as PNG file with original name + grid number&letter.
Have one layer in the file. Add bunch of Guides. Save file as PNG and run the script. Enjoy the rest of your day!
Use it on your own risk.
(function() {
try {
#target photoshop
if (app.documents.length === 0)
return alert("Open file first");
var doc = app.activeDocument;
if (doc.layers.length !== 1)
return alert("This script can handle only one layer in file. Merge your layers and run script again.");
var originalRulerUnits = app.preferences.rulerUnits,
plot = plotDocument(),
selectionCoordinates = [],
newLayer, newDocument,
layer = doc.layers[0];
app.preferences.rulerUnits = Units.PIXELS;
app.displayDialogs = DialogModes.NO;
layer.isBackgroundLayer && layer.isBackgroundLayer = false;
layer.selected = true;
doc.selection.deselect();
for (var i = 0, il = plot.length; i < il; i++) {
selectionCoordinates[0] = [plot.x, plot.y];
selectionCoordinates[1] = [plot.x, plot.y + plot.height];
selectionCoordinates[2] = [plot.x + plot.width, plot.y + plot.height];
selectionCoordinates[3] = [plot.x + plot.width, plot.y];
doc.selection.select(selectionCoordinates);
if (selectionHasPixels()) {
newLayer = layerViaCopy();
newLayer.name = plot.name;
duplicateToNewDocument(newLayer)
app.activeDocument.trim(TrimType.TRANSPARENT);
savePNG(File(doc.path + "/" + getBaseName(doc) + "-" + plot.name + ".psd"));
app.activeDocument.close(SaveOptions.DONOTSAVECHANGES);
app.activeDocument = doc;
newLayer.remove();
}
}
app.preferences.rulerUnits = originalRulerUnits;
alert("done")
/////// HELPER FUNCTIONS ///////
/**
* Converts document Guides information to array of coordinates blocks
* @return {[Array]} [Array of objects, containing x, y, width, height, name properties]
*/
function plotDocument() {
var guidesArray = getGuidesCoordinates(),
coords = [],
vStart, vCurrent = vMin = 0,
hStart, hCurrent = hMin = 0,
columnName = "";
if (guidesArray.vertical[0] !== 0)
guidesArray.vertical.unshift(0);
if (guidesArray.vertical[guidesArray.vertical.length - 1] < Number(app.activeDocument.width))
guidesArray.vertical.push(Number(app.activeDocument.width))
if (guidesArray.horizontal[0] !== 0)
guidesArray.horizontal.unshift(0);
if (guidesArray.horizontal[guidesArray.horizontal.length - 1] < Number(app.activeDocument.height))
guidesArray.horizontal.push(Number(app.activeDocument.height))
for (var h = 1, hl = guidesArray.horizontal.length; h < hl; h++) {
hStart = hCurrent;
hCurrent = guidesArray.horizontal;
vCurrent = guidesArray.vertical[0];
vMin = guidesArray.vertical[0];
columnName = "a";
for (var v = 1, vl = guidesArray.vertical.length; v < vl; v++) {
vStart = vCurrent;
vCurrent = guidesArray.vertical;
coords.push({
x: vStart,
y: hStart,
width: vCurrent - vMin,
height: hCurrent - hMin,
name: h + columnName
});
vMin = vCurrent;
columnName = String.fromCharCode(columnName.charCodeAt(0) + 1).toString();
}
hMin = hCurrent;
}
return coords
}
/**
* Creates object with vertical/horizontal arrays that contain Guides coordinates
* @return {[Object]} []
*/
function getGuidesCoordinates() {
var docGuides = app.activeDocument.guides,
verticalGuides = [],
horizontalGuides = [];
for (var g = 0, gl = docGuides.length; g < gl; g++) {
if (docGuides.coordinate >= 0) {
if (docGuides.direction === Direction.VERTICAL && docGuides.coordinate <= Number(app.activeDocument.width)) {
verticalGuides.push(Number(docGuides.coordinate))
} else if (docGuides.direction === Direction.HORIZONTAL && docGuides.coordinate <= Number(app.activeDocument.height)) {
horizontalGuides.push(Number(docGuides.coordinate))
}
}
}
return {
vertical: removeDuplicatesFromArray(verticalGuides).sort(),
horizontal: removeDuplicatesFromArray(horizontalGuides).sort()
}
}
/**
* Removes Dulpicates from array
* @param {[Array]} userArray [Array with values]
* @return {[Array]} [New array without duplicates]
*/
function removeDuplicatesFromArray(userArray) {
var seen = {},
out = [],
j = 0,
item;
for (var i = 0, il = userArray.length; i < il; i++) {
item = userArray;
if (seen[item] !== 1) {
seen[item] = 1;
out[j++] = item;
}
}
return out;
}
/**
* Checks if selection has live pixels
* @return {[Bool]} [True if selection contains pixels]
*/
function selectionHasPixels() {
try {
app.activeDocument.selection.copy();
return true
} catch (e) {
return null
}
}
/**
* Creates new layer via copy.
* @return {[Object]} [New layer]
*/
function layerViaCopy() {
app.activeDocument.selection.copy();
app.activeDocument.artLayers.add();
app.activeDocument.paste();
return app.activeDocument.activeLayer;
}
/**
* Duplicates selected layer to new document
* @param {[Object]} layer [Layer to duplicate]
* @return {[Object]} [Returns layer in new document]
*/
function duplicateToNewDocument(layer) {
var doc = app.activeDocument;
var newDocument = app.documents.add(doc.width, doc.height, doc.resolution);
app.activeDocument = doc;
var newLayer = layer.duplicate(newDocument, ElementPlacement.INSIDE);
app.activeDocument = newDocument;
newDocument.layers[newDocument.layers.length - 1].remove();
return newLayer;
}
/**
* Saves active document as PNG file with transparency
* @param {[Object]} saveFile [File Object with PNG extension]
* @return Nothing
*/
function savePNG(saveFile) {
var pngSaveOptions = new PNGSaveOptions();
pngSaveOptions.compression = 9;
pngSaveOptions.interlaced = false;
activeDocument.saveAs(saveFile, pngSaveOptions, true, Extension.LOWERCASE);
};
/**
* Gets document name without extension
* @param {[Object]} document [Optional. Document to whos name to get]
* @return {[String]} [Document name without extension]
*/
function getBaseName(document) {
document = document || app.activeDocument;
return decodeURI(document.name.substring(0, document.name.lastIndexOf(".")));
}
} catch (e) {
alert(e.toString() + "\nScript File: " + File.decode(e.fileName).replace(/^.*[\|\/]/, '') +
"\nFunction: " + arguments.callee.name +
"\nError on Line: " + e.line.toString())
}
})();
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