package com.qoppa;

import java.util.Vector;

import android.app.Activity;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.FontMetrics;
import android.graphics.Rect;
import android.os.Bundle;
import android.util.Log;

import com.qoppa.android.pdfProcess.PDFCanvas;
import com.qoppa.android.pdfProcess.PDFDocument;
import com.qoppa.android.pdfProcess.PDFFont;
import com.qoppa.android.pdfProcess.PDFFontStandard;
import com.qoppa.android.pdfProcess.PDFFontStandard.PDFFontFamily;
import com.qoppa.android.pdfProcess.PDFPage;
import com.qoppa.android.pdfProcess.PDFPaint;
import com.qoppa.android.pdfViewer.fonts.StandardFontTF;

public class TextWrapSample extends Activity 
{
    String text= "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz";

	public void onCreate(Bundle bundle)
	{
		super.onCreate(bundle);
		
		StandardFontTF.mAssetMgr = getAssets();

		try
		{
			int pageWidth = 800;

			PDFDocument doc = new PDFDocument();
			PDFPage page = doc.appendNewPage(pageWidth, 1000);
			PDFCanvas canvas = page.createCanvas();
			
			//draw a square on the canvas, to mark the text bounds
			Rect textBounds = new Rect(100, 50, 300, 400);
			
			canvas.drawRect(textBounds.left, textBounds.top, textBounds.right, textBounds.bottom, new PDFPaint());
			
			PDFFontStandard font = new PDFFontStandard(PDFFontFamily.HELVETICA, PDFFont.Style.NORMAL, 24);
			
			Paint paint = font.getTextPaint();
			Vector<String> lines = new Vector<String>();

			int length = text.length();
			for(int i = 0; i < length; i++)
			{
				float textWidth = paint.measureText(text.substring(0, i));
				if(textWidth >= textBounds.width())
				{
					//the string was too wide when measured from 0 to i, so substring should be 0 to i - 1
					String line = text.substring(0, i - 1);
					lines.add(line);
					
					text = text.substring(i - 1);
					//reset the iterator
					length = text.length();
					i = 0;
				}
			}

			//add the last line
			if(text.length() > 0)
			{
				lines.add(text);
			}

			FontMetrics fm = font.getFontMetrics();
			
			float lineHeight = Math.abs(fm.ascent) +
			Math.abs(fm.descent);

			float y = lineHeight + textBounds.top;
			for(String line : lines)
			{
				canvas.drawText(line, Color.BLACK, textBounds.left, y, font);
				y += lineHeight;
			}

			doc.saveCopy("/sdcard/autowrapsample.pdf");

			Log.e("sample finished", "autowrap sample finished!!!!!!!!!!!!!!!!!!!!");
		}
		catch (Exception e)
		{
			Log.e("exception caught", Log.getStackTraceString(e));
		}
	}
}