Affinity Photo Document Dimension Macro

[IanBarber]

Is it possible to retrieve the document width and height from a Macro

 

[v_kyr]

AFAIK not in an dynamic image independent manner, since an Affinity macro usually records here fixed absolute values of the already loaded document during the state of recording.

[IanBarber]

@v_kyrthanks for clarifying that.

Does Affinity Photo have any scripting capabilities or API's you can use do you know.

[v_kyr]

9 minutes ago, IanBarber said:

Does Affinity Photo have any scripting capabilities or API's you can use do you know.

NO not yet! - The only thing it offers beside it's limited macros facility is a partial support of the PS Plug-in API (... much reduced to image transfer & update from the PS plugins API, so a limited functionality subset).

[carl123]

35 minutes ago, IanBarber said:

Is it possible to retrieve the document width and height from a Macro

What ultimately are you trying to achieve?

[IanBarber]

I was creating a Macro but needed the current document width to start from.

I have managed to create a work around for now which should work

[John Rostron]

You do know that if you enter "w" into a dialog box you will get the document width?

John

[IanBarber]

2 minutes ago, John Rostron said:

You do know that if you enter "w" into a dialog box you will get the document width?

John

Can you please explain a little more

[v_kyr]

13 minutes ago, IanBarber said:

Can you please explain a little more

See related the APhoto ...

• Expressions for field input

[IanBarber]

4 hours ago, v_kyr said:

See related the APhoto ...

• Expressions for field input

Do you have a working example of using these expressions in input boxes. Cannot seem to get these to stick

[v_kyr]

3 hours ago, IanBarber said:

Do you have a working example of using these expressions in input boxes. Cannot seem to get these to stick

Not sure what you mean, just try/use some of the expressions in the named input fields, for example the transform panel. - For example try to resize an object's/shape's height via typing "2*w" into the height field. For an object/shape let's say of w=150 px, h=150 px you would get then as a new height value h = 2*w = 2*150 = 300 px.

Similar when setting dimensions using the New Document or Document Setup dialogs w will give you the docs actual width as a value. - Those vars are like placeholders for the related value here, so you can perform some simple math operations with them. The result will be always numeric values.

[R C-R]

Just now, v_kyr said:

Similar when setting dimensions using the New Document or Document Setup dialogs w will give you the docs width as a value.

Note that it should be a lower case w; upper case W does not work,

[v_kyr]

4 minutes ago, R C-R said:

Note that it should be a lower case w; upper case W does not work,

Somebody forgotten to apply a toLower function call for the input validation or calc expression there. - Or they intensionally wanted to give users a chance to be able in future to define custom uppercase vars of these on demand (who knows).

[IanBarber]

What I wanted to do was for example, make this shape extend to the edge of the picture but I don't see a way of getting the image width dynamically because it could change for different images loaded.

Edited March 9, 2022 by IanBarber

[IanBarber]

💡might be getting somewhere now, sprw gives the spreadwidth so might be able to use that.

sw works but only for that one document unfortunately

Edited March 9, 2022 by IanBarber

[v_kyr]

2 hours ago, IanBarber said:

What I wanted to do was for example, make this shape extend to the edge of the picture but I don't see a way of getting the image width dynamically because it could change for different images loaded.

That sounds like you tried to use that in some macro (?). However that won't work since as I said before in another thread, those commands aren't recording in a dynamically variable manner in macros. Instead a macro always records and contains only the absolut fixed size values of that specific doc/image it has been recorded on. In other words, a macro doesn't record a dynamically getWidth() function call, instead it only records the absolut static doc values of that one document in use during recording.

So for what you want to do there above, an external Python script which then manipulates a passed image accordingly, or some ImageMagick commands in batch script are overall better suited.

[IanBarber]

@v_kyr I did try this in a Macro but then quickly realised that what you had said is correct which is very frustrating.

If you set the Scale option in the Macro Library panel to Min Fit, I am sure it worked every time on any image. I never tried it it but I also think this option is Global across all Macros in the Library which if it is could lead to issues for other Macros in there.

Do you know without me doing a bunch of testing if the Scale is Global to all.

[carl123]

12 hours ago, IanBarber said:

What I wanted to do was for example, make this shape extend to the edge of the picture but I don't see a way of getting the image width dynamically because it could change for different images loaded.

Just extend the shape's width to a very high number (e.g. 10,000px)

The fact that it extends off the canvas will be irrelevant in most situations

But if you don't mind rasterising the shape, use the Rasterise and Trim command after resizing it, which will constrain/crop it back to the canvas width