http://mrpmorris.blogspot.com/2007/08/printing-bitmaps-using-cpcl.html
Thanks a lot. It was really helpful. Zebra documentation is pathetic, no doubt.
I have done a port of this code in Android. I first understood it then, done port for Android.
Hopefully, It will help someone. First convert your image to Black & White(I used Photoshop) which is 8 bits.
ParseBitmap.java
===========
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.util.Log;
import android.widget.Toast;
public class ParseBitmap {
private static final String TAG = "ParseBitmap";
private String m_data;
private Bitmap m_bmp;
public ParseBitmap(Bitmap _bmp){
try{
m_bmp = _bmp;
Log.d(TAG,"Height:"+Integer.toString(m_bmp.getHeight()));
Log.d(TAG,"Widht:"+Integer.toString(m_bmp.getWidth()));
}catch(Exception e){
Log.d(TAG, e.getMessage());
}
}
public String ExtractGraphicsDataForCPCL(int _xpos,int _ypos){
m_data = "";
int color = 0,bit = 0,currentValue = 0,redValue = 0, blueValue = 0, greenValue = 0;
try{
//Make sure the width is divisible by 8
int loopWidth = 8 - (m_bmp.getWidth() % 8);
if (loopWidth == 8)
loopWidth = m_bmp.getWidth();
else
loopWidth += m_bmp.getWidth();
m_data = "EG" + " " +
Integer.toString((loopWidth / 8)) + " " +
Integer.toString(m_bmp.getHeight()) + " " +
Integer.toString(_xpos) + " " +
Integer.toString(_ypos) + " ";
for (int y = 0; y < m_bmp.getHeight(); y++)
{
bit = 128;
currentValue = 0;
for (int x = 0; x < loopWidth; x++)
{
int intensity = 0;
if (x < m_bmp.getWidth())
{
color = m_bmp.getPixel(x, y);
redValue = Color.red(color);
blueValue = Color.blue(color);
greenValue = Color.green(color);
intensity = 255 - ((redValue + greenValue + blueValue) / 3);
}
else
intensity = 0;
if (intensity >= 128)
currentValue |= bit;
bit = bit >> 1;
if (bit == 0)
{
String hex = Integer.toHexString(currentValue);
hex = LeftPad(hex);
m_data = m_data + hex.toUpperCase();
bit = 128;
currentValue = 0;
/****
String dbg = "x,y" + "-"+ Integer.toString(x) + "," + Integer.toString(y) + "-" +
"Col:" + Integer.toString(color) + "-" +
"Red: " + Integer.toString(redValue) + "-" +
"Blue: " + Integer.toString(blueValue) + "-" +
"Green: " + Integer.toString(greenValue) + "-" +
"Hex: " + hex;
Log.d(TAG,dbg);
*****/
}
}//x
}//y
m_data = m_data + "\r\n";
}catch(Exception e){
m_data = e.getMessage();
return m_data;
}
return m_data;
}
private String LeftPad(String _num){
String str = _num;
if (_num.length() == 1)
{
str = "0" + _num;
}
return str;
}
================================
ZebraDemoActivity.java
==============
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;
import com.zebra.android.comm.ZebraPrinterConnection;
import com.zebra.android.comm.ZebraPrinterConnectionException;
import com.zebra.android.comm.BluetoothPrinterConnection;
import com.zebra.android.printer.PrinterLanguage;
import com.zebra.android.printer.ZebraPrinter;
import com.zebra.android.printer.ZebraPrinterFactory;
public class ZebraDemoActivity extends Activity {
protected ZebraPrinter printer;
private Bitmap m_bmp;
private ParseBitmap m_BmpParser;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inScaled = false;
options.inDither = false;
m_bmp = BitmapFactory.decodeResource(getResources(),R.drawable.image,options);
m_BmpParser = new ParseBitmap(m_bmp);
sendCPCLOverBluetooth("00:22:58:36:5C:25");
//sendCpclOverBluetooth("00:22:58:36:5C:25");
}
private void sendCPCLOverBluetooth(final String theBtMacAddress) {
try {
// Instantiate connection for given Bluetooth® MAC Address.
ZebraPrinterConnection thePrinterConn = new BluetoothPrinterConnection(theBtMacAddress);
// Initialize
//Looper.prepare();
// Open the connection - physical connection is established here.
thePrinterConn.open();
printer = ZebraPrinterFactory.getInstance(thePrinterConn);
PrinterLanguage pl = printer.getPrinterControlLanguage();
Toast.makeText(this, pl.toString(), Toast.LENGTH_LONG).show();
if (pl == PrinterLanguage.ZPL) {
Toast.makeText(this, "ZPL", Toast.LENGTH_LONG).show();
} else if (pl == PrinterLanguage.CPCL) {
Toast.makeText(this, "CPCL", Toast.LENGTH_LONG).show();
}
String TicketID = "23948234";
// This example prints "This is a ZPL test." near the top of the label.
//String zplData = "^XA^FO20,20^A0N,25,25^FDThis is a ZPL test.^FS^XZ";
//It is taking 50 units for each line so forumula is
//(1 blank line on top + number of lines in middle +1 blank line on bottom)* 1st argument of ML command = result
//put result as 4th argumenet of ! command"
String str = m_BmpParser.ExtractGraphicsDataForCPCL(0,0);
String zplData = "! 0 200 200 230 1\r\n"
+ str
+"PRINT\r\n";
// Send the data to printer as a byte array.
thePrinterConn.write(zplData.getBytes());
//Make sure the data got to the printer before closing the connection
//Thread.sleep(5000);
// Close the connection to release resources.
thePrinterConn.close();
//Looper.myLooper().quit();
} catch (Exception e) {
// Handle communications error here.
//e.printStackTrace();
Toast.makeText(this, e.getMessage() , Toast.LENGTH_LONG).show();
}
}
}
