How to Create a Small Script?

Question

Hey everyone,

For those who make scripts for Photoshop, I was wondering if you could make me a really small script to change a pattern.

I'm editing a large amount of PSDs in batch to quickly change a Layer Style Pattern, but which will also maintain the scale that the current pattern is at. If you change a pattern using an action, it does not save the scale of the current pattern even though it is just a different colouration of the same pattern. If I did this same thing with inside Photoshop, not using an action, there is no problem with changing a pattern, and it doesn't affect the scale at all.

The steps should be simple:
- get layer named 'Pattern'

- get layer pattern scale and save as a variable ? (I'm not sure if this is an available variable to get nor if it's needed)

- change layer pattern

- set scale to saved variable

Opening and saving is dealt with by bridge, it's just the small action I need to replace with a script that doesn't affect the scale of patterns, and just changes it.

jazz-y · Accepted Answer

Below you see 2 scripts. Copy the code, save each one separately with the jsx extension (name the files as you like), place the files in the Photoshop presets folder. Restart Photoshop. These files will appear in the scripts menu.

The first script gets the scale of the pattern of the current layer and writes it to the layer's metadata (it will be stored with the layer even after you save and reopen the file or copy layer to another document). The second script reads the scale of the pattern from the metadata of the current layer and assigns it.

I think it's clear how to use it - start recording the action, first record the launch of the first script (it will receive and save the scale value for the selected layer), then assign the pattern you need, then record the call to the second script (it will adjust the scale by reading the value written on the previous step). You can also use manual launch of scripts if you need to save and later return to the saved scale.

Script 1: Save pattern scale to layer metadata.jsx

#target photoshop

var lr = new AM('layer'),
    meta = new LayerMetadata('pattern', 'scale');

if (lr.hasProperty('adjustment')) {
    var adj = lr.convertToObject(lr.getProperty(p = 'adjustment'), p)
    for (o in adj) {
        if (adj[o]._obj == 'patternLayer') {
            var scale = adj[o].scale ? adj[o].scale._value : 100;
            meta.set(activeDocument.activeLayer, 'fill', scale)
            break;
        }
    }
}

if (lr.hasProperty('layerEffects')) {
    var fx = lr.convertToObject(lr.getProperty(p = 'layerEffects').value, 'patternFill')
    if (fx) {
        var scale = fx.scale ? fx.scale._value : 100;
        meta.set(activeDocument.activeLayer, 'fx', scale)
    }
}

function LayerMetadata(customNamespace, prefix) {
    if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject('lib:AdobeXMPScript')

    this.set = function (layerObj, key, value) {
        try {
            xmpMeta = new XMPMeta(layerObj.xmpMetadata.rawData)
        } catch (e) { xmpMeta = new XMPMeta() }

        XMPMeta.registerNamespace(customNamespace, prefix)
        xmpMeta.setProperty(customNamespace, key, value)
        layerObj.xmpMetadata.rawData = xmpMeta.serialize()
        return ""
    }

    this.get = function (layerObj, key) {
        try {
            xmpMeta = new XMPMeta(layerObj.xmpMetadata.rawData)
            var data = xmpMeta.getProperty(customNamespace, key)
        } catch (e) { }
        return data == undefined ? "" : data.value
    }
}

function AM(target) {
    var s2t = stringIDToTypeID,
        t2s = typeIDToStringID;

    target = target ? s2t(target) : null;

    this.getProperty = function (property, id, idxMode) {
        property = s2t(property);
        (r = new ActionReference()).putProperty(s2t('property'), property);
        id != undefined ? (idxMode ? r.putIndex(target, id) : r.putIdentifier(target, id)) :
            r.putEnumerated(target, s2t('ordinal'), s2t('targetEnum'));
        return getDescValue(executeActionGet(r), property)
    }

    this.hasProperty = function (property, id, idxMode) {
        property = s2t(property);
        (r = new ActionReference()).putProperty(s2t('property'), property);
        id ? (idxMode ? r.putIndex(target, id) : r.putIdentifier(target, id))
            : r.putEnumerated(target, s2t('ordinal'), s2t('targetEnum'));
        return executeActionGet(r).hasKey(property)
    }

    this.convertToObject = function (obj, key) {
        var d = new ActionDescriptor();
        switch (obj.typename) {
            case 'ActionList': d.putList(s2t(key), obj); break;
            case 'ActionDescriptor': d = obj; break;
        }
        (desc = new ActionDescriptor()).putObject(s2t('object'), s2t('json'), d);
        eval('var o = ' + executeAction(s2t('convertJSONdescriptor'), desc).getString(s2t('json')));
        return o[key]
    }

    function getDescValue(d, p) {
        switch (d.getType(p)) {
            case DescValueType.OBJECTTYPE: return { type: t2s(d.getObjectType(p)), value: d.getObjectValue(p) };
            case DescValueType.LISTTYPE: return d.getList(p);
            case DescValueType.REFERENCETYPE: return d.getReference(p);
            case DescValueType.BOOLEANTYPE: return d.getBoolean(p);
            case DescValueType.STRINGTYPE: return d.getString(p);
            case DescValueType.INTEGERTYPE: return d.getInteger(p);
            case DescValueType.LARGEINTEGERTYPE: return d.getLargeInteger(p);
            case DescValueType.DOUBLETYPE: return d.getDouble(p);
            case DescValueType.ALIASTYPE: return d.getPath(p);
            case DescValueType.CLASSTYPE: return d.getClass(p);
            case DescValueType.UNITDOUBLE: return (d.getUnitDoubleValue(p));
            case DescValueType.ENUMERATEDTYPE: return { type: t2s(d.getEnumerationType(p)), value: t2s(d.getEnumerationValue(p)) };
            default: break;
        };
    }
}

Script 2: Get pattern scale from layer metadata.jsx

#target photoshop

var lr = new AM('layer'),
    meta = new LayerMetadata('pattern', 'scale');

if (lr.hasProperty('adjustment')) {
    var adj = lr.convertToObject(lr.getProperty(p = 'adjustment'), p)
    for (o in adj) {
        if (adj[o]._obj == 'patternLayer') {
            var scale = meta.get(activeDocument.activeLayer, 'fill')
            if (scale) {
                $.writeln(scale)
                lr.setAdjustmentFillScale(lr.getProperty(p), Number(scale))
            }
            break;
        }
    }
}

if (lr.hasProperty('layerEffects')) {
    var fx = lr.convertToObject(lr.getProperty(p = 'layerEffects').value, 'patternFill')
    if (fx) {
        var scale = meta.get(activeDocument.activeLayer, 'fx')
        if (scale) {
            $.writeln(scale)
            lr.setFxFillScale(lr.getProperty(p).value, Number(scale))
        }

    }
}

function LayerMetadata(customNamespace, prefix) {
    if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject('lib:AdobeXMPScript')

    this.set = function (layerObj, key, value) {
        try {
            xmpMeta = new XMPMeta(layerObj.xmpMetadata.rawData)
        } catch (e) { xmpMeta = new XMPMeta() }

        XMPMeta.registerNamespace(customNamespace, prefix)
        xmpMeta.setProperty(customNamespace, key, value)
        layerObj.xmpMetadata.rawData = xmpMeta.serialize()
    }

    this.get = function (layerObj, key) {
        try {
            xmpMeta = new XMPMeta(layerObj.xmpMetadata.rawData)
            var data = xmpMeta.getProperty(customNamespace, key)
        } catch (e) { }
        return data == undefined ? "" : data.value

    }
}

function AM(target) {
    var s2t = stringIDToTypeID,
        t2s = typeIDToStringID;

    target = target ? s2t(target) : null;

    this.getProperty = function (property, id, idxMode) {
        property = s2t(property);
        (r = new ActionReference()).putProperty(s2t('property'), property);
        id != undefined ? (idxMode ? r.putIndex(target, id) : r.putIdentifier(target, id)) :
            r.putEnumerated(target, s2t('ordinal'), s2t('targetEnum'));
        return getDescValue(executeActionGet(r), property)
    }

    this.hasProperty = function (property, id, idxMode) {
        property = s2t(property);
        (r = new ActionReference()).putProperty(s2t('property'), property);
        id ? (idxMode ? r.putIndex(target, id) : r.putIdentifier(target, id))
            : r.putEnumerated(target, s2t('ordinal'), s2t('targetEnum'));
        return executeActionGet(r).hasKey(property)
    }

    this.setAdjustmentFillScale = function (list, scale) {
        for (var i = 0; i < list.count; i++) {
            if (t2s(list.getObjectType(i)) == 'patternLayer') {
                var fill = list.getObjectValue(i)
                fill.putUnitDouble(s2t('scale'), s2t('percentUnit'), scale)
            }
        }
        (r = new ActionReference()).putEnumerated(s2t("contentLayer"), s2t("ordinal"), s2t("targetEnum"));
        (d = new ActionDescriptor()).putReference(s2t("null"), r);
        d.putObject(s2t("to"), s2t("patternLayer"), fill);
        executeAction(s2t("set"), d, DialogModes.NO);

    }

    this.setFxFillScale = function (desc, scale) {
        s2t = stringIDToTypeID;

        var fill = desc.getObjectValue(s2t("patternFill"));
        fill.putUnitDouble(s2t('scale'), s2t('percentUnit'), scale);

        (r = new ActionReference()).putProperty(s2t("property"), p = s2t("layerEffects"));
        r.putEnumerated(s2t("layer"), s2t("ordinal"), s2t("targetEnum"));
        var fx = executeActionGet(r).getObjectValue(p);
        fx.putObject(s2t("patternFill"), s2t("patternFill"), fill);
        (d = new ActionDescriptor()).putReference(s2t("null"), r);
        d.putObject(s2t("to"), s2t("layerEffects"), fx);
        executeAction(s2t("set"), d, DialogModes.NO);
    }

    this.convertToObject = function (obj, key) {
        var d = new ActionDescriptor();
        switch (obj.typename) {
            case 'ActionList': d.putList(s2t(key), obj); break;
            case 'ActionDescriptor': d = obj; break;
        }
        (desc = new ActionDescriptor()).putObject(s2t('object'), s2t('json'), d);
        eval('var o = ' + executeAction(s2t('convertJSONdescriptor'), desc).getString(s2t('json')));
        return o[key]
    }

    function getDescValue(d, p) {
        switch (d.getType(p)) {
            case DescValueType.OBJECTTYPE: return { type: t2s(d.getObjectType(p)), value: d.getObjectValue(p) };
            case DescValueType.LISTTYPE: return d.getList(p);
            case DescValueType.REFERENCETYPE: return d.getReference(p);
            case DescValueType.BOOLEANTYPE: return d.getBoolean(p);
            case DescValueType.STRINGTYPE: return d.getString(p);
            case DescValueType.INTEGERTYPE: return d.getInteger(p);
            case DescValueType.LARGEINTEGERTYPE: return d.getLargeInteger(p);
            case DescValueType.DOUBLETYPE: return d.getDouble(p);
            case DescValueType.ALIASTYPE: return d.getPath(p);
            case DescValueType.CLASSTYPE: return d.getClass(p);
            case DescValueType.UNITDOUBLE: return (d.getUnitDoubleValue(p));
            case DescValueType.ENUMERATEDTYPE: return { type: t2s(d.getEnumerationType(p)), value: t2s(d.getEnumerationValue(p)) };
            default: break;
        };
    }
}

32621919 · Answer

It could also be for just a pattern fill layer, it doesn't have to be a layer style...

Again, the problem with actions is the scale is a set value that will be a constant. And I need to the scale to change between each PSD since it's a different value.

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