Exporting / Printing selected layer of pdf file

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   Hi,

is there a possibility to select a certain layer of a pdf file and export / print it with the original page size of the pdf file container programmatically? With other words, I do have a file which contains several layers. I would like to hide all layers except one specific layer and print it using a pdf printer driver.

Thank you for your support!

Cheers,
Martin

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MartinCS Members Profile Find Members Posts Beginner Joined: 27 Nov 12 Status: Offline Points: 3	Post Options Post Reply Quote MartinCS Report Post Thanks(0) Quote Reply Topic: Exporting / Printing selected layer of pdf file Posted: 27 Nov 12 at 10:07AM
	Hi, is there a possibility to select a certain layer of a pdf file and export / print it with the original page size of the pdf file container programmatically? With other words, I do have a file which contains several layers. I would like to hide all layers except one specific layer and print it using a pdf printer driver. Thank you for your support! Cheers, Martin

Ingo Members Profile Find Members Posts Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3529	Post Options Post Reply Quote Ingo Report Post Thanks(0) Quote Reply Posted: 27 Nov 12 at 7:51PM
	Hi Martin! I would first make a copy of the original pdf to have a working file. On this file i would delete all layers i don't want and then print out the working file with one remaining layer. QuickPDF supports this: http://www.quickpdflibrary.com/help/quickpdf/LayersAndOptionalContentGroups.php Have a look at DeleteLayer and LayerCount. Additionally you should read all about contentstreams... Cheers and welcome here, Ingo Edited by Ingo - 27 Nov 12 at 7:56PM

AndrewC Members Profile Find Members Posts Moderator Group Joined: 08 Dec 10 Location: Geelong, Aust Status: Offline Points: 841	Post Options Post Reply Quote AndrewC Report Post Thanks(0) Quote Reply Posted: 28 Nov 12 at 3:19AM
	Martin, Layers are called OptionalContentGroup's (OCG's) in technical speak. Quick PDF library has full support for OCG's including functions. Here is some code I just found showing how the functions are used. (I am not sure what the function does though) http://www.quickpdflibrary.com/help/quickpdf/OptionalContentGroupCount.php http://www.quickpdflibrary.com/help/quickpdf/GetOptionalContentGroupID.php http://www.quickpdflibrary.com/help/quickpdf/SetOptionalContentGroupPrintable.php http://www.quickpdflibrary.com/help/quickpdf/GetOptionalContentGroupName.php int ret = QP.LoadFromFile("pdf_with_ocgs.pdf", ""); int numberOfLayer = QP.OptionalContentGroupCount(); int[] layerID = new int[numberOfLayer]; string[] layerName = new string[numberOfLayer]; string layerNameStr; for(int iLayer=0; iLayer < numberOfLayer; iLayer++) { layerID[iLayer] = QP.GetOptionalContentGroupID(1 + iLayer); layerName[iLayer] = QP.GetOptionalContentGroupName(layerID[iLayer]); } for (int iLayer = 0; iLayer < numberOfLayer; iLayer++) { //activating and deactivating the layers, // in order to have only a single one that is activated for (int iLayerTemp = 0; iLayerTemp < numberOfLayer; iLayerTemp++) { QP.SetOptionalContentGroupVisible(layerID[iLayerTemp], iLayer == iLayerTemp ? 1 : 0); QP.SetOptionalContentGroupPrintable(layerID[iLayerTemp], iLayer == iLayerTemp ? 1 : 0); } QP.UseUnsafeContentStreams(1); ret = QP.RenderPageToFile(100, 1, 7, "out" + iLayer.ToString() + ".tif"); if (ret != 1) MessageBox.Show("Render failed"); }