Explore related tutorials & articles
20
Replies
The UXP object model lacks many features, so focus on batchPlay first. Let's try to transform the eventlistener plugin code that is already familiar to us:
var idGsnB = charIDToTypeID( "GsnB" );
var desc228 = new ActionDescriptor();
var idRds = charIDToTypeID( "Rds " );
var idPxl = charIDToTypeID( "#Pxl" );
desc228.putUnitDouble( idRds, idPxl, 34.600000 );
executeAction( idGsnB, desc228, DialogModes.NO );
to make it more convenient to work, we transfer the variables to the function arguments manually or using the cleanSl script:
gaussianBlur(34.6);
function gaussianBlur(Rds) {
var s2t = function (s) {return app.stringIDToTypeID(s); };
var descriptor = new ActionDescriptor();
descriptor.putUnitDouble( s2t( "radius" ), s2t( "pixelsUnit" ), Rds );
executeAction( s2t( "gaussianBlur" ), descriptor, DialogModes.NO );
}
now we rewrite the code for batchPlay:
const batchPlay = require("photoshop").action.batchPlay;
gaussianBlur(34.6)
function gaussianBlur(radius) {
batchPlay(
[
{
_obj: "gaussianBlur",
radius: {
_unit: "pixelsUnit",
_value: radius
},
_options: {
dialogOptions: "dontDisplay"
}
}
], {})
};
as you can see, everything is exactly the same here as in the eventlistener code, just represented as an object.
By analogy, we can write a function for dustAndScratches:
var idDstS = charIDToTypeID( "DstS" );
var desc229 = new ActionDescriptor();
var idRds = charIDToTypeID( "Rds " );
desc229.putInteger( idRds, 30 );
var idThsh = charIDToTypeID( "Thsh" );
desc229.putInteger( idThsh, 29 );
executeAction( idDstS, desc229, DialogModes.NO );dustAndScratches(30, 29);
function dustAndScratches(Rds, threshold) {
var s2t = function (s) {return app.stringIDToTypeID(s); };
var descriptor = new ActionDescriptor();
descriptor.putInteger( s2t( "radius" ), Rds );
descriptor.putInteger( s2t( "threshold" ), threshold );
executeAction( s2t( "dustAndScratches" ), descriptor, DialogModes.NO );
} const batchPlay = require("photoshop").action.batchPlay;
dustAndScratches(30, 29)
function dustAndScratches(radius, threshold) {
batchPlay(
[
{
_obj: "dustAndScratches",
radius: radius,
threshold: threshold,
_options: {
dialogOptions: "dontDisplay"
}
}
], {})
};
Having done this manually several times for different functions and different objects, you will quickly learn how to transfer old functions to batchPlay and this will no longer pose a problem.
Similar code can be obtained using the Alchemist plugin, (use Development version from GitHub to see as many events as possible) or using a self-written event listener:
you were very close 🙂 change
"_obj":"object",
by
"_obj": "custom",
As @Jarda Bereza wrote above, the result of convertJSONdescriptor may not always be suitable for direct use in batchPlay
@Jef Bracke wrote:
How do you find out that convertJSONdescriptor even exists?
As far as I remember, this feature appeared with one of the CEP versions. Examples of its use can be found in these files:
The greatest value is not the Adobe documentation (unfortunately), but the users, whose experience and knowledge are invaluable. Most of the information can be found in the official Adobe Communities.
Thanks for showing what I still needed to correct, could I ask you how you figured that out?
By @Jef Bracke
Descriptor that Photoshop returns as a result of executeAction do not always contain the classID (I do not know why and how it happens) . If the classID is not specified, then it assigned from the parent object (our .putObject function)
In batchPlay, the _obj property always specifies the name of the event that we are handling. In this case, it is var idCstm = charIDToTypeID ("Cstm") or if you convert it to a string typeIDToStringID (charIDToTypeID ("Cstm")) == "custom"
So... In a hypothetical situation where we wouldn't find the stringID but we do have the charID, could we use the charID as well? (It would save me a lot of refactoring time)
Of course. In Photoshop, some keys only have charID, but no sringID. And vice versa. Add the $ symbol in the batchPlay to denote charID, for example:
_obj: "$LqFy",
It's going to be funny for someone who comes across idFit for the first time.
Yes, because Fit Image.jsx is a script. In ExtendScript, you can assign an eventID to your script for interacting with Photoshop at the event subsystem level using a specially formed resource string. This is very convenient for passing parameters to your script from other sripts or programs (via bridgeTalk), or for recording it into actions (unfortunately, there is no similar functionality in the UXP yet).
AdChoices