//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2008 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.     
//---------------------------------------------------------------------------------------

using System;
using System.Drawing;

using pdftron;
using pdftron.Common;
using pdftron.PDF;
using pdftron.SDF;

namespace PDFDrawTestCS
{
	/// <summary>
	//---------------------------------------------------------------------------------------
	// The following sample illustrates how to convert PDF documents to various raster image 
	// formats (such as PNG, JPEG, BMP, TIFF), as well as how to convert a PDF page to GDI+ Bitmap 
	// for further manipulation and/or display in WinForms applications.
	//---------------------------------------------------------------------------------------
	/// </summary>
	class PDFDrawTestCS
	{
		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		static void Main(string[] args)
		{
			// The first step in every application using PDFNet is to initialize the 
			// library and set the path to common PDF resources. The library is usually 
			// initialized only once, but calling Initialize() multiple times is also fine.
			PDFNet.Initialize();		           
			PDFNet.SetResourcesPath("../../../../../resources");

			try 
			{
				// Optional: Set ICC color profiles to fine tune color conversion 
				// for PDF 'device' color spaces. You can use your own ICC profiles. 
				// Standard Adobe color profiles can be download from Adobes site: 
				// http://www.adobe.com/support/downloads/iccprofiles/iccprofiles_win.html
				//
				// Simply drop all *.icc files in PDFNet resource folder or you specify 
				// the full pathname.
				//---
				// PDFNet.SetColorManagement(true);
				// PDFNet.SetDefaultDeviceCMYKProfile("USWebCoatedSWOP.icc"); // will search in PDFNet resource folder.
				// PDFNet.SetDefaultDeviceRGBProfile("AdobeRGB1998.icc"); 

				// Optional: Set predefined font mappings to override default font 
				// substitution for documents with missing fonts. For example:
				//---
				// PDFNet.AddFontSubst("StoneSans-Semibold", "C:/WINDOWS/Fonts/comic.ttf");
				// PDFNet.AddFontSubst("StoneSans", "comic.ttf");  // search for 'comic.ttf' in PDFNet resource folder.
				// PDFNet.AddFontSubst(PDFNet.CharacterOrdering.e_Identity, "C:/WINDOWS/Fonts/arialuni.ttf");
				// PDFNet.AddFontSubst(PDFNet.CharacterOrdering.e_Japan1, "C:/Program Files/Adobe/Acrobat 7.0/Resource/CIDFont/KozMinProVI-Regular.otf");
				// PDFNet.AddFontSubst(PDFNet.CharacterOrdering.e_Japan2, "c:/myfonts/KozMinProVI-Regular.otf");
				//
				// If fonts are in PDFNet resource folder, it is not necessary to specify 
				// the full path name. For example,
				//---
				// PDFNet.AddFontSubst(PDFNet.CharacterOrdering.e_Korea1, "AdobeMyungjoStd-Medium.otf");
				// PDFNet.AddFontSubst(PDFNet.CharacterOrdering.e_CNS1, "AdobeSongStd-Light.otf");
				// PDFNet.AddFontSubst(PDFNet.CharacterOrdering.e_GB1, "AdobeMingStd-Light.otf");
			}
			catch (Exception)
			{
				Console.WriteLine("The specified color profile was not found.");
			}
            
			// Relative path to the folder containing test files.
			string input_path =  "../../../../TestFiles/";
			string output_path = "../../../../TestFiles/Output/";

			PDFDraw draw = new PDFDraw();  // PDFDraw class is used to rasterize PDF pages.

			//--------------------------------------------------------------------------------
			// Example 1) Convert the first PDF page to PNG at 92 DPI. 
			// A three step tutorial to convert PDF page to an image.
			try  
			{
				// A) Open the PDF document.
				PDFDoc doc = new PDFDoc(input_path + "tiger.pdf");
				// Initialize the security handler, in case the PDF is encrypted.
				doc.InitSecurityHandler();  

				// B) The output resolution is set to 92 DPI.
				draw.SetDPI(92);

				// C) Rasterize the first page in the document and save the result as PNG.
				Page pg = doc.GetPage(1);
				draw.Export(pg, output_path + "tiger_92dpi.png");

				Console.WriteLine("Example 1: {0}. Done.", output_path + "tiger_92dpi.png");
				
				// Export the same page as TIFF
				draw.Export(pg, output_path + "tiger_92dpi.tif", "TIFF");
			}
			catch (PDFNetException e) {
				Console.WriteLine(e.Message);
			}

			//--------------------------------------------------------------------------------
			// Example 2) Convert the all pages in a given document to JPEG at 72 DPI.
			ObjSet hint_set=new ObjSet(); // A collection of rendering 'hits'.
			Console.WriteLine("Example 2:");
			try  
			{
				PDFDoc doc = new PDFDoc(input_path + "newsletter.pdf");
				// Initialize the security handler, in case the PDF is encrypted.
				doc.InitSecurityHandler();  
				
				draw.SetDPI(72); // Set the output resolution is to 72 DPI.
				
				// Use optional encoder parameter to specify JPEG quality.
				Obj encoder_param = hint_set.CreateDict();
				encoder_param.PutNumber("Quality", 80);
				
				// Traverse all pages in the document.
				for (PageIterator itr=doc.GetPageIterator(); itr.HasNext(); itr.Next()) {
					string outname = string.Format("{0}newsletter{1:d}.jpg", output_path, itr.GetPageNumber());
					Console.WriteLine(outname);
					draw.Export(itr.Current(), outname, "JPEG", encoder_param);
				}

				Console.WriteLine("Done");
			}
			catch (PDFNetException e) 
			{
				Console.WriteLine(e.Message);
			}

			try  // Examples 3-5
			{				
				// Common code for remaining samples.
				PDFDoc tiger_doc = new PDFDoc(input_path + "tiger.pdf");
				// Initialize the security handler, in case the PDF is encrypted.
				tiger_doc.InitSecurityHandler();  
				Page page = tiger_doc.GetPage(1);

				//--------------------------------------------------------------------------------
				// Example 3) Convert the first page to GDI+ Bitmap. Also, rotate the 
				// page 90 degrees and save the result as TIFF.
				draw.SetDPI(100); // Set the output resolution is to 100 DPI.
				draw.SetRotate(Page.Rotate.e_90);  // Rotate all pages 90 degrees clockwise.
				
				System.Drawing.Bitmap bmp = draw.GetBitmap(page);
				bmp.Save(output_path + "tiger_100dpi_rot90.tif", System.Drawing.Imaging.ImageFormat.Tiff);

				Console.WriteLine("Example 3: {0}. Done.", output_path + "tiger_100dpi_rot90.tif");
				draw.SetRotate(Page.Rotate.e_0);  // Disable image rotation for remaining samples.

				//--------------------------------------------------------------------------------
				// Example 4) Convert PDF page to a fixed image size. Also illustrates some 
				// other features in PDFDraw class such as rotation, image stretching, exporting 
				// to grayscale, or monochrome.

				// Initialize render 'gray_hint' parameter, that is used to control the 
				// rendering process. In this case we tell the rasterizer to export the image as 
				// 1 Bit Per Component (BPC) image.
				Obj mono_hint=hint_set.CreateDict();  
				mono_hint.PutNumber("BPC", 1);

				// SetImageSize can be used instead of SetDPI() to adjust page  scaling 
				// dynamically so that given image fits into a buffer of given dimensions.
				draw.SetImageSize(1000, 1000);		// Set the output image to be 1000 wide and 1000 pixels tall
				draw.Export(page, output_path + "tiger_1000x1000.png", "PNG", mono_hint);
				Console.WriteLine("Example 4: {0}. Done.", output_path + "tiger_1000x1000.png");

				draw.SetImageSize(200, 400);	    // Set the output image to be 200 wide and 300 pixels tall
				draw.SetRotate(Page.Rotate.e_180);  // Rotate all pages 90 degrees clockwise.

				// 'gray_hint' tells the rasterizer to export the image as grayscale.
				Obj gray_hint=hint_set.CreateDict();  
				gray_hint.PutName("ColorSpace", "Gray");

				draw.Export(page, output_path + "tiger_200x400_rot180.png", "PNG", gray_hint);
				Console.WriteLine("Example 4: {0}. Done.", output_path + "tiger_200x400_rot180.png");

				draw.SetImageSize(400, 200, false);  // The third parameter sets 'preserve-aspect-ratio' to false.
				draw.SetRotate(Page.Rotate.e_0);    // Disable image rotation.
				draw.Export(page, output_path + "tiger_400x200_stretch.jpg", "JPEG");
				Console.WriteLine("Example 4: {0}. Done.", output_path + "tiger_400x200_stretch.jpg");

				//--------------------------------------------------------------------------------
				// Example 5) Zoom into a specific region of the page and rasterize the 
				// area at 200 DPI and as a thumbnail (i.e. a 50x50 pixel image).
				page.SetCropBox(new Rect(216, 522, 330, 600));	// Set the page crop box.

				// Select the crop region to be used for drawing.
				draw.SetPageBox(Page.Box.e_crop); 
				draw.SetDPI(900);  // Set the output image resolution to 900 DPI.
				draw.Export(page, output_path + "tiger_zoom_900dpi.png", "PNG");
				Console.WriteLine("Example 5: {0}. Done.", output_path + "tiger_zoom_900dpi.png");

				draw.SetImageSize(50, 50);	   // Set the thumbnail to be 50x50 pixel image.
				draw.Export(page, output_path + "tiger_zoom_50x50.png", "PNG");
				Console.WriteLine("Example 5: {0}. Done.", output_path + "tiger_zoom_50x50.png");
			}
			catch (PDFNetException e) 
			{
				Console.WriteLine(e.Message);
			}

			draw.Dispose();  // Explicitly clean-up allocated memory

			// Calling Terminate when PDFNet is no longer in use is a good 
			// practice, but it is not required.
			PDFNet.Terminate();
		}
	}
}