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

import java.awt.image.PixelGrabber;

//import pdftron.Filters.FilterWriter;
//import pdftron.Filters.StdFile;
import pdftron.PDF.*;
import pdftron.SDF.Obj;
import pdftron.SDF.ObjSet;

//---------------------------------------------------------------------------------------
// The following sample illustrates how to convert PDF documents to various raster image 
// formats (such as PNG, JPEG, BMP, TIFF, etc), as well as how to convert a PDF page to 
// GDI+ Bitmap for further manipulation and/or display in WinForms applications.
//---------------------------------------------------------------------------------------
public class PDFDrawTest 
{
	public static void main(String[] args)
	{	
		try {
			// 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");
						
			// Optional: Set ICC color profiles to fine tune color conversion 
			// for PDF 'device' color spaces...

			//PDFNet::SetColorManagement(true);
			//PDFNet::SetDefaultDeviceCMYKProfile("D:/Misc/ICC/USWebCoatedSWOP.icc");
			//PDFNet::SetDefaultDeviceRGBProfile("AdobeRGB1998.icc"); // will search in PDFNet resource folder.

			// ----------------------------------------------------
			// Optional: Set predefined font mappings to override default font 
			// substitution for documents with missing fonts...

			// 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::e_Identity, "C:/WINDOWS/Fonts/arialuni.ttf");
			// PDFNet::AddFontSubst(PDFNet::e_Japan1, "C:/Program Files/Adobe/Acrobat 7.0/Resource/CIDFont/KozMinProVI-Regular.otf");
			// PDFNet::AddFontSubst(PDFNet::e_Japan2, "c:/myfonts/KozMinProVI-Regular.otf");
			// PDFNet::AddFontSubst(PDFNet::e_Korea1, "AdobeMyungjoStd-Medium.otf");
			// PDFNet::AddFontSubst(PDFNet::e_CNS1, "AdobeSongStd-Light.otf");
			// PDFNet::AddFontSubst(PDFNet::e_GB1, "AdobeMingStd-Light.otf");
		}
		catch (Exception e) {
			e.printStackTrace();
		}

		// 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.
		ObjSet hint_set=new ObjSet();

		//--------------------------------------------------------------------------------
		// Example 1) Convert the first page to PNG and TIFF 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"));

			System.out.println("Example 1: " + output_path + "tiger_92dpi.png" + ". Done.");

			// Export the same page as TIFF
			draw.export(pg, (output_path + "tiger_92dpi.tif"), "TIFF");
		}
		catch(Exception e)	
		{
			e.printStackTrace();
		}

		//--------------------------------------------------------------------------------
		// Example 2) Convert the all pages in a given document to JPEG at 72 DPI.
		System.out.println("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();) {
				Page current=(Page)(itr.next());
				String filename=output_path+"newsletter"+current.getIndex() + ".jpg";
				System.out.println(filename);
				draw.export(current, filename, "JPEG", encoder_param);
			}

			System.out.println("Done.");
		}
		catch(Exception e)	
		{
			e.printStackTrace();
		}

		// Examples 3-5
		try  
		{				
			// 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 = (Page)(tiger_doc.getPageIterator().next());

			//--------------------------------------------------------------------------------
			// Example 3) Convert the first page to raw bitmap. Also, rotate the 
			// page 90 degrees and save the result as RAW.
			draw.setDPI(100); // Set the output resolution is to 100 DPI.
			draw.setRotate(Page.e_90);  // Rotate all pages 90 degrees clockwise.

			java.awt.Image image = draw.getBitmap(page);
			int width=image.getWidth(null), height=image.getHeight(null);
			int[] arr = new int[width*height];
			PixelGrabber pg=new PixelGrabber(image, 0, 0, width, height, arr, 0, width);
			pg.grabPixels();

			// Save the raw RGB data to disk.
			/*StdFile file=new StdFile((output_path + "tiger_100dpi_rot90.raw"), StdFile.e_write_mode);
			FilterWriter writer=new FilterWriter(file);
			writer.writeBuffer(arr);
			writer.flush();*/
			
			//System.out.println("Example 3: " + output_path + "tiger_100dpi_rot90.raw. Done.");
			draw.setRotate(Page.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);
			System.out.println("Example 4: " + output_path + "tiger_1000x1000.png. Done.");

			draw.setImageSize(200, 400); // Set the output image to be 200 wide and 300 pixels tall
			draw.setRotate(Page.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);
			System.out.println("Example 4: " + output_path + "tiger_200x400_rot180.png. Done.");

			draw.setImageSize(400, 200, false);  // The third parameter sets 'preserve-aspect-ratio' to false.
			draw.setRotate(Page.e_0);    // Disable image rotation.
			draw.export(page, (output_path + "tiger_400x200_stretch.jpg"), "JPEG");
			System.out.println("Example 4: " + output_path + "tiger_400x200_stretch.jpg. Done.");

			//--------------------------------------------------------------------------------
			// 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).
			Rect zoom_rect=new Rect(216, 522, 330, 600);
			page.setCropBox(zoom_rect);	// Set the page crop box.

			// Select the crop region to be used for drawing.
			draw.setPageBox(Page.e_crop); 
			draw.setDPI(900);  // Set the output image resolution to 900 DPI.
			draw.export(page, (output_path + "tiger_zoom_900dpi.png"), "PNG");
			System.out.println("Example 5: " + output_path + "tiger_zoom_900dpi.png. Done.");

			draw.setImageSize(50, 50);	   // Set the thumbnail to be 50x50 pixel image.
			draw.export(page, (output_path + "tiger_zoom_50x50.png"), "PNG");
			System.out.println("Example 5: " + output_path + "tiger_zoom_50x50.png. Done.");
		}
		catch(Exception e)	
		{
			e.printStackTrace();
		}

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