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K
Kazon23752888nou4
Inspiring
July 14, 2022
Answered

How to show updates to Illustrator IDE immediately (C++ Plugin using SDK)

  • July 14, 2022
  • 1 reply
  • 1277 views

I'm developing an Illustrator plugin in C++. I'm also very new to C++ programming and relatively new to programming Illustrator.

 

I'm trying to understand how to get the IDE to show the updates as they are made. For example, I'm creating new documents, artboards and copying artwork to them all programatically, but as I use debug to step through the code after each of the functions mentioned above, I see no changes in the IDE. I have to go through the entire code to see any updates. The behavior that I'm expecting is that when my code creates a new document, add an artboard, copy artwork, they are seen immediately.

 

I'm thinking that it's timing and wondering if there is a need for threading? Best case is, it's simply a refresh of some kind that can be done to update the IDE after each function step?

 

Can anyone offer some insight on this and is my description of the issue enough for you to understand what's happening?

 

Regards,

Kazon

This topic has been closed for replies.
Correct answer A. Patterson

Looking at my code, it appears I neglected an important pair of lines!

 

error = sAITimer->SetTimerActive(timer, true);
THROW_EXCEP_IF(error);

I suspect that will solve your problem! Sorry I missed it!


Oh, and when you receive the timer, you should probably disable it 🙂

1 reply

K
Kazon23752888nou4Author
Inspiring
July 14, 2022

Specifically what is happening is that I am generating PDFs. I am first creating the document and artboard, then copying the artwork to that new document. However, I don't see the copied artwork in the document. Using the AIActionManager suite, I am generating the PDF. I don't know for sure if it's what's causing the issue but when I get to the part of code that plays the action:

 

// Play action
error = sAIActionManager->PlayActionEvent(kAISaveDocumentAsAction, kDialogOff, vpb);
check_ai_error(error);

 

I get a blank PDF generated. What makes it even more confusing, is that if I comment out the line of code that plays the action, the artwork is then shown in the document on the artboard. I'm stepping through the code and using check_ai_error(error) throughout and there are not errors thrown, and all of my objects (variables) are showing valid with the appropriate data values.

A. Patterson
A. Patterson
Inspiring
July 16, 2022

I think I've run into the problem you're encountering, but I'm not 100% sure. Still, it's worth trying my workaround.

 

Basically -- at least in my case -- the problem was that I needed to let Illustrator take a beat before continuing with the save. The trick was tro create a zero duration timer, something like:

 

ai::int32 delay = 0;
AITimerHandle timer = nullptr;
auto error = sAITimer->AddTimer(pluginRef, "name_of_timeer", delay, &timer);
// check errror

 

Then you just handle the timer callback and do your PDF SaveAs action there. A zero length timer is basically an 'OnIdle' event. If you had a slow enough computer, it might be twenty seconds later if that's how long it takes Illustrator to do whatever it needs to do in response to whatever you did before adding the timer, but it won't call the timer until it's done, which is what's important.

 

If you need the canvas to update in realtime, that's a different problem, but I don't think that's what you're talking about here. For that, you'd want to use AIDocumentSuite::RedrawDocument(), who's comment is:

 

Forces the current document to be redrawn. Illustrator automatically redraws
the document when a plug-in returns, so this function is not usually needed.

 

Typically, I only use that if I'm in a dialog doing somethign on the artboard with annotations, and I don't even always need it.

A. Patterson
A. Patterson
Inspiring
July 17, 2022

Having a heck of a time getting past my issue here. I've been trying to implement the timer but cannot get it to fire. At least it is not hitting the GoTimer function as I was expecting it would. Don't know if it's my getting to know how to program Illustrator and C++, and something that I don't understand.

 

Here is my code to try and get the timer to work. As shown, AddTimer is being tested in my plugin's startup() but I am not getting it to hit the GoTimer function. Am I doing something wrong? I have added break points in both startup() and GoTimer(). The break point in startup() is being hit just fine and I can step through the code. The break point in GoTimer() is never hit.

 

ASErr clpcsx::Plugin::GoTimer(AITimerMessage* message)
{
	goTimer(message);

	return kNoErr;
}

void clpcsx::Plugin::startup()
{

	ASErr error = kNoErr;

	// Acquire Suites needed
	error = sSPBasic->AcquireSuite(kAITimerSuite, kAITimerSuiteVersion, (const void **)&sAITimer);
	check_ai_error(error);

	ai::int32 delay = 0;
	AITimerHandle timer = nullptr;

	clpcsx::Plugin *plugin_ = clpcsx::Plugin::instance();

	error = sAITimer->AddTimer((SPPluginRef)plugin_, "saveDocAsTimer", delay, &timer);
	check_ai_error(error);

	// Release Suite after use
	error = sSPBasic->ReleaseSuite(kAITimerSuite, kAITimerSuiteVersion);
}

 


Looking at my code, it appears I neglected an important pair of lines!

 

error = sAITimer->SetTimerActive(timer, true);
THROW_EXCEP_IF(error);

I suspect that will solve your problem! Sorry I missed it!

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