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How to Place an image onto a document?

Sep 25, 2013 10:12 PM

Tags: #photoshop #mac #c++ #plugin #plug-in #sdk #cc #objective-c #placeevent

I've been trying to build a plugin for placing images onto Photoshop document using a Mac that is based on the current "Dissolve" project provided in the CC SDK.

 

I'm at the stage of trying to place an image on a document. To figure out the code for this I've built the Listener plugin and ran through the steps of using Photoshop's "File:Place..." menu item to place an image (I've so far tried gifs and EPSes) onto a document. I then looked at the code generated and tried to build a function to do what I wanted from that.

 

However, when I try to run it I hit the following error message: "Could not complete the Dissolve command because of a program error."

 

I'll append the current form of my code to the end to avoid cluttering my comments.

 

If I comment out the line with "sPSActionControl->Play(" then the error goes away. (Of course nothing then happens.)

 

Some notes:

 

1) I didn't retain the exact layout of the output of the Listener plugin. The compiler complained about the goto methods that Listener added.

 

2) I'm running this in a objective-C++ class (that's triggered through a file with a .mm postfix).

 

3) There's NSLog statements to help me figure out the problem. I see number 7 but I never see the final error code. Looks like an exception.

 

4) I've retained older code that I tried, by commenting it out, so you'll see some of my thinking as I struggled with this.

 

Any ideas or suggestions?

 

----

 

 

- (SPErr)photoshopPlayeventPlace:(char *)cPath

{

NSLog(@"photoshopPlayeventPlace %d", 0, NULL);

 

PIActionDescriptor result = NULL;

 

// PIActionDescriptor desc0x100 = NULL;

// PIActionDescriptor desc0x108 = NULL;

 

Auto_Desc descriptor;

Auto_Desc offsetDetails;

 

SPErr error = kSPNoError;

 

Handle aliasValue = NULL;

FullPathToAlias(cPath, aliasValue);

 

do

{

// error = sPSActionDescriptor->Make(&desc0x100);

// if (error) break;

 

NSLog(@"photoshopPlayeventPlace %d", 1, NULL);

 

// error = sPSActionDescriptor->PutAlias(desc0x100, keyNull, aliasValue);

error = sPSActionDescriptor->PutAlias(descriptor.get(), keyNull, aliasValue);

if (error) break;

 

NSLog(@"photoshopPlayeventPlace %d", 2, NULL);

 

// error = sPSActionDescriptor->PutEnumerated(desc0x100, keyFreeTransformCenterState, typeQuadCenterState, enumQCSAverage);

error = sPSActionDescriptor->PutEnumerated(descriptor.get(), keyFreeTransformCenterState, typeQuadCenterState, enumQCSAverage);

if (error) break;

 

NSLog(@"photoshopPlayeventPlace %d", 3, NULL);

 

// error = sPSActionDescriptor->Make(&desc0x108);

// if (error) break;

 

NSLog(@"photoshopPlayeventPlace %d", 4, NULL);

 

// error = sPSActionDescriptor->PutUnitFloat(desc0x108, keyHorizontal, unitDistance, 0);

error = sPSActionDescriptor->PutUnitFloat(offsetDetails.get(), keyHorizontal, unitDistance, 0);

if (error) break;

 

NSLog(@"photoshopPlayeventPlace %d", 5, NULL);

 

// error = sPSActionDescriptor->PutUnitFloat(desc0x108, keyVertical, unitDistance, 0);

error = sPSActionDescriptor->PutUnitFloat(offsetDetails.get(), keyVertical, unitDistance, 0);

if (error) break;

 

NSLog(@"photoshopPlayeventPlace %d", 6, NULL);

 

// error = sPSActionDescriptor->PutObject(desc0x100, keyOffset, classOffset, desc0x108);

error = sPSActionDescriptor->PutObject(descriptor.get(), keyOffset, classOffset, offsetDetails.get());

if (error) break;

 

NSLog(@"photoshopPlayeventPlace %d", 7, NULL);

 

// error = sPSActionControl->Play(&result, eventPlace, desc0x100, plugInDialogSilent);

error = sPSActionControl->Play(&result, eventPlace, descriptor.get(), plugInDialogSilent);

if (error) break;

 

NSLog(@"photoshopPlayeventPlace %d", 8, NULL);

}

while (false);

if (result != NULL) sPSActionDescriptor->Free(result);

// if (desc0x100 != NULL) sPSActionDescriptor->Free(desc0x100);

if (aliasValue != NULL) sPSHandle->Dispose(aliasValue);

// if (desc0x108 != NULL) sPSActionDescriptor->Free(desc0x108);

 

NSLog(@"photoshopPlayeventPlace error:%d", error, NULL);

 

return error;

}

 
Replies
  • Currently Being Moderated
    Sep 26, 2013 1:36 PM   in reply to Another Andrew

    You cannot "Play" from a filter plug-in type. (Dissolve)

     

    You can only "Play" from an automation plug-in type. (Listener, Getter, AutomationFilter, et. al.)

     
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