Lock PagesView from updates SOLVED

[zarkogajic]

Hi Support,

How do I lock updates to IPXV_PagesView ?

I'm running a list of op.document.replaceFonts and while this is being done I would like the pagesView not to update (after each operation).

I've tried registering an event monitor and in OnEventMonitor:

//pseudo
if (pEvent.Code = e.Render) OR (pEvent.Code = e.PostRender) then pEvent.Handled = true

This kind of works - but there *are* some glitches being rendered whatsoever. Maybe I'm missing an event code?

I've also tried IPXV_PagesViewDrawCallback but not sure how to stop OnDrawPagesView from drawing ...

-žarko

[Daniel - PDF-XChange]

Hello, zarkogajic

I have made note of this to our Dev team, hopefully one of them can come offer some advice when they have a free minute.

Kind regards,

[Daniel - PDF-XChange]

Hello again,

I received the following from the Dev team, I hope it helps!

Hello
In his latest forum posts, Zarko was interested in the page region selection feature, and here notes that he uses a list of ReplaceFonts operations. I assume that he is trying to replace the font in a specific region several times. But after performing the operation, the text may shift (if the replacement is not only colour). That is, the text in the region before the execution will not exactly match what we get after.

I'm afraid that in this case, the PagesView rendering delay won't help him. The text has been changed at a deeper level (content), and visual display with or without a delay will not affect the next execution.

You can advise him to change his approach to specify the replacement rules so that they fully match the desired result and perform the operation once.

Kind regards,

[zarkogajic]

Hi Dan, Misha,

I am not replacing the font in a specific region several times.

I am replacing the color (so only color) of text in a specific region. Multiple such specific regions (different pages, different regions).

I cannot run IOperation once as I need to run the op.document.replaceFonts for each region / page (multiple regions per page).

So, I'm using
Options.PagesRange.Type = 10 // custom rect
Options.PagesRange.Custom = page_number
Options.PagesRange.CustomRect.left/top/bottom/right = ..."

While this is being done (in a loop) I would like to stop PagesView from updating after each execution of the operation. ....

-žarko

[Daniel - PDF-XChange]

Hello, zarkogajic

the team is still discussing possible alternatives, but here is one working solution we have found so far:

Before executing the list of operations, you need to use the ‘e.document.beforeChangePagesList’ event, and after — ‘e.document.afterChangePagesList’. This will help prevent PagesView from being redrawn during operations.

Kind regards,

[zarkogajic]

Hi Dan,

Thanks.

How to "use" those events? Fire them for document?

-žarko

[Daniel - PDF-XChange]

Hello, zarkogajic

Yes, you need to fire them for the document.
Here is the pseudocode:

Code: Select all

int eventIDBefore = pxvInst.Str2ID(‘e.document.beforeChangePagesList’);
int eventIDAfter = pxvInst.Str2ID(‘e.document.afterChangePagesList’);

IEvent eventBefore = doc.EventServer.CreateNewEvent(eventIDBefore, 0, 0);
doc.EventServer.FireEvent(eventBefore, doc);

for (...)
{
...
Op.Do();
}

IEvent eventAfter = doc.EventServer.CreateNewEvent(eventIDAfter, 0, 0);
doc.EventServer.FireEvent(eventAfter, doc);

Kind regards,

[zarkogajic]

Hi Dan,

Tx. Will try and report back (next week).

-ž

[Daniel - PDF-XChange]

[zarkogajic]

That does it

-žarko

[Daniel - PDF-XChange]