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Suilven 
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Joined: 03 May 07 Status: Offline Points: 10 |
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 Topic: Layers?Posted: 03 May 07 at 5:45PM |
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Hi all,
I'm trying out IsedQuickPDF.dll - I guess I'm in the right place to ask questions? If not, please show me the door :o) I think I have the latest version and I am using it via the gpViewer activeX control. I am just trying to view PDFs. Most PDFs appear ok. But I have some that have originated in a design studio. When I show them in this control, I only appear to see some of the design - like a layer. It's not a colour separation layer but something else. Has anyone an idea of what I'm seeing? Or any ideas to try? I'm sure this has already been covered somewhere in this forum, but I'm afraid I don't even know what search words to use. TIA Dave |
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Ingo
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Joined: 29 Oct 05 Status: Offline Points: 3524 |
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Posted: 04 May 07 at 1:50AM |
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Hi Dave!
The last released dll-version here is 5.22 The last released dcu-version here is 5.21 Only an idea: Perhaps you should try a "CombineLayers"?... If you have an example online anywhere the members here can test it, too. Best regards, Ingo |
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Suilven
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Posted: 04 May 07 at 2:58AM |
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Hi Ingo,
Thanks for jumping in. I don't know much at all about PDFs, so I am probably missing something very simple. After my post, I downloaded the docs and did try CombineLayers() but with no luck. LayerCount() returned 1. I'm not convinced I'm talking to the DLL correctly. In the gdPicture dll I have... SetISedQuickPDFLicenceNumber("...") DisplayFromFile( "...") The I've just done a SelectPage(1) before calling the layer functions. If I was not using the gdPicture dll, how would I load the PDF file? The DLL reports version 5.22.0.119 I can't post the file I'm actually using because of copyright, but I will talk to the studio today and ask them to send me a test PDF. Sorry for all these basic questions, but I am up against a deadline :o) TIA Dave |
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Suilven
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Posted: 04 May 07 at 8:19AM |
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Ingo,
You can find a test pdf at www.suilven.com/ftp/test.pdf If I open that with Acrobat 7, then save as an Acrobat 7 pdf file, it exhibits the same behaviour in iSED, where it shows almost in monochrome. The studio is using both Artpro and Illustrator. Any help from passing gurus will be most welcome. TIA Dave |
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marian_pascalau
Debenu Quick PDF Library Expert
Joined: 28 Mar 06 Location: Germany Status: Offline Points: 278 |
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Posted: 04 May 07 at 10:25AM |
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Suilven, the problem you have is caused by the fact that QuickPDF does not implement Colorspaces. The image in PDF file seems to be a kind of monochrome bitmap which change it's color based on ColorSpace implementation.
/Marian
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Suilven
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Posted: 04 May 07 at 11:00AM |
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Marian,
Thank you for defining the problem. That will save me a lot of wasted time. Dave |
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marian_pascalau
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Joined: 28 Mar 06 Location: Germany Status: Offline Points: 278 |
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Posted: 04 May 07 at 11:01AM |
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You'are wellcome
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Ingo
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Posted: 05 May 07 at 4:53PM |
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Hi Dave!
For me it seems to be more a problem of the gpViewer activeX control as from QuickPDF? I can load the test.pdf with QuickPDF... then save it via RenderDocumentToFile as a jpg... then show it with Delphi via Image1.Picture.LoadFromFile(pdf.jpg)... and all look like it looks in the Foxit or Adobe Reader... complete and with the same colours. So i think the problem is gpViewer (sorry Loic ;-). I've seen that you've already posted in the gpViewer-forum... hope you'll get an answer there... it's weekend... wait a bit ;-) Best regards, Ingo |
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Suilven
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Posted: 07 May 07 at 4:37AM |
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Hi Ingo,
Good catch! Works here too and solves another problem which was to build up a library of lo-res JPGs. So I will probably use your work-around permanently. But I will tickle Loic and see if anything can be done. Thanks again. Dave |
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marian_pascalau
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Joined: 28 Mar 06 Location: Germany Status: Offline Points: 278 |
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Posted: 07 May 07 at 4:45AM |
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Hi there,
in Dave's test document can you see a black&white area on the Bottom-Right side of the document. In Acrobat it is rendered in color.
Was that the only problem you had Dave? Cause everithing else was indeed very well rendered with QuickPDF library.
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lcarrere
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Joined: 10 Jul 06 Location: France Status: Offline Points: 47 |
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Posted: 07 May 07 at 5:08AM |
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Hi,
I've found the problem...
The RenderDocumentToFile() and DARenderPageToString() return differents data.
Try this sample in VB6:
Private Sub Form_Load()
Dim nDocumentID As Long, nPageID As Long
Dim hImageFile As Long Dim sDocumentString As String 'Direct Access Mode
Dim oIsed As New iSED.QuickPDF oIsed.UnlockKey ("354538350271B47ED3104F7CEC6FED8E")
nDocumentID = oIsed.DAOpenFile("c:\test.pdf", "")
nPageID = oIsed.DAFindPage(nDocumentID, 1) sDocumentString = oIsed.DARenderPageToString(nDocumentID, nPageID, 1, 96) hImageFile = FreeFile()
Open "c:\outputDA.jpg" For Binary As hImageFile Put #hImageFile, , sDocumentString Close #hImageFile oIsed.DACloseFile (nDocumentID)
MsgBox "Done with Direct Access Mode!"
'STD Access Mode oIsed.LoadFromFile ("c:\test.pdf") Call oIsed.RenderDocumentToFile(96, 1, 1, 1, "c:\outputSTD.jpg") oIsed.RemoveDocument (oIsed.DocumentID(1)) MsgBox "Done with STD Access Mode!"
End Sub
The DARenderPageToString() returns a grayscaled image
 Marian do you know how we can resolve this point ?
Best regards,
Loïc Carrère
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Suilven
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Posted: 07 May 07 at 6:38AM |
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Marian,
>n Dave's test document can you see a black&white area on the >Bottom-Right side of the document. In Acrobat it is rendered in color. >Was that the only problem you had Dave? Cause everithing else was >indeed very well rendered with QuickPDF library.
No, the whole image was almost all monochrome. Some colour did survive. On the PDFs that I could not publish, spot colour swatches around the main design did appear ok, but the main design had objects missing or wrong colour info. Using Ingo's workaround, the colour swatches in the bottom right of the image are still monochrome and some other colour swatches are missing. Is this still the "ColourSpace" problem? HTH Dave PS Great support group! Shows what can be done when a group take ownership of a product. |
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Suilven
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Posted: 07 May 07 at 6:56AM |
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Marian,
I spoke too soon. If I try Ingo's workaround with the new PDFs that I can't publish, they appear better than before, but large blocks of colour in the design are not shown at all :o( If it is any consolation, ConvertIMage from SoftInterface cannot render these images correctly either. Only Foxit seems to display the same image as Acrobat. Looks like I have a studio who are at the "bleeding" edge of technology. Dave |
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marian_pascalau
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Joined: 28 Mar 06 Location: Germany Status: Offline Points: 278 |
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Posted: 07 May 07 at 8:35AM |
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Dave, please provide some image samples.
Create please some screenshots and send them please to support(at)quickpdf.org (or publish them in this forum).
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marian_pascalau
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Joined: 28 Mar 06 Location: Germany Status: Offline Points: 278 |
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Posted: 07 May 07 at 10:19AM |
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Loïc, the result of your research is right. The set of DA* functions was never (and never will) used by me. The implementation is very strange and does not follow a clear programming logic.
In this case the problem is caused by the fact that jumping to Indirect PDF objects is not implemented inside DA* functions. The PDF contents are supposing tp make use of an Indirect ColorSpace object which will never work because of missing implementation.
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Suilven
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Posted: 07 May 07 at 11:45AM |
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Marian,
I understand your need for visual evidence. I cannot send the PDFs which cause me real problems because they are for a product that has not been launched yet. It is a Bank Holiday in the UK, but I will ask the studio tomorrow first thing for some more examples that I can share. Your efforts are much appreciated. Dave |
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Suilven
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Posted: 08 May 07 at 7:50AM |
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Marian,
I spoke to my contact very briefly this morning. They are out of their office for the rest of the week. But they did say that the test.pdf was created with the same app as my newer ones. The implication is that if you can solve the problems on that test.pdf, the other should show ok. So I guess I have to ask if the problem is rooted in ColorSpaces? And, if it is, will there be a solution in QuickPDF in the very near future? TIA Dave |
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Suilven
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Posted: 08 May 07 at 8:29AM |
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Marian, Ingo,
I said that Foxit renders the test.pdf correctly. Well 1.3 does, but 2.0 makes a complete mess of it. I don't know if this information helps you. Are PDF standards as fluid/lax/ill-defined as I am starting to think they are? Regards, Dave |
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marian_pascalau
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Posted: 08 May 07 at 8:55AM |
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Dave, this is just a "current state" of QuickPDF answer. At the moment there are 3x problems which may affect you: 1) DA function are not properly implemented. It seems that these were the original PDF manipulation functions and lack of several important improvements. This can be fixed in case you are willing to sponsor this correction and the result will be exposed in source code but only to you. This case you can use QuickPDF with gpViewer activeX control and you will receive the same result as: STD Access Mode functions. A solution is relative simple to implement. 2) The QuickPDF does not implement color space functions. As result some of the colors are not matched within an embedded index table. As result some colored areas are wrong and produce very unpleasant results. Solution complexity: moderate. 3) The QuickPDF does not implement ICC color profiles. This is not a very critical problem but may cause that colors are different rendered between QuickPDF and Acrobat programs (Foxit renders well). As result some of the colors are slightly different with relative great difference when converting CMYK to RGB colors in Magenta/Blue range. Solution complexity: development has moderate complexity but require intensive study of color profile specifications.
Edited by marian_pascalau - 08 May 07 at 8:58AM |
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lcarrere
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Joined: 10 Jul 06 Location: France Status: Offline Points: 47 |
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Posted: 09 May 07 at 10:49AM |
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Hi all !
 Marian thanks for your answers. Dave, Now the GdPicture components stop to use the DA methods. You can update your component here for best results: http://www.gdpicture.com/ressources/betas/ Best regards, Loïc Carrère |
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