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Printing out a bitmap QR code image with Brother Label Printer SDK prints out a blank label

I need to be able to print out a bitmap QR Code using my Brother QL-720NW.
As of right now, I'm able to generate a QR code bitmap and display it properly in an ImageView. On a button press, the user needs to be able to print that QR code bitmap from the Brother label printer.
I am able to make a connection to the printer, but I can only print out blank labels that do not show the QR code. How can I fix this so that the bitmap appears on the printed label properly?
Method for printing bitmap:
void printImage(Bitmap bitmap) {
// Specify printer
final Printer printer = new Printer();
PrinterInfo settings = printer.getPrinterInfo();
settings.ipAddress = "192.168.2.149";
settings.workPath = "/storage/emulated/0/Download";
settings.printerModel = PrinterInfo.Model.QL_720NW;
settings.port = PrinterInfo.Port.NET;
settings.orientation = PrinterInfo.Orientation.LANDSCAPE;
//settings.paperSize = PrinterInfo.PaperSize.CUSTOM;
settings.align = PrinterInfo.Align.CENTER;
settings.valign = PrinterInfo.VAlign.MIDDLE;
settings.printMode = PrinterInfo.PrintMode.ORIGINAL;
settings.numberOfCopies = 1;
settings.labelNameIndex = LabelInfo.QL700.W62RB.ordinal();
settings.isAutoCut = true;
settings.isCutAtEnd = false;
printer.setPrinterInfo(settings);
// Connect, then print
new Thread(new Runnable() {
#Override
public void run() {
if (printer.startCommunication()) {
Log.e("Tag: ", "Connection made.");
PrinterStatus result = printer.printImage(bitmap);
Log.e("Tag: ", "Printing!");
if (result.errorCode != PrinterInfo.ErrorCode.ERROR_NONE) {
Log.d("TAG", "ERROR - " + result.errorCode);
}
printer.endCommunication();
}
else {
Log.e("Tag: ", "Cannot make a connection.");
}
}
}).start();
}
Generating bitmap:
Bitmap encodeAsBitmap(String str) throws WriterException {
QRCodeWriter writer = new QRCodeWriter();
BitMatrix bitMatrix = writer.encode(str, BarcodeFormat.QR_CODE, 100, 100);
int w = bitMatrix.getWidth();
int h = bitMatrix.getHeight();
int[] pixels = new int[w * h];
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
pixels[y * w + x] = bitMatrix.get(x, y) ? Color.BLACK : Color.WHITE;
}
}
Bitmap bitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, w, 0, 0, w, h);
return bitmap;
}

Solved it, I was using LabelInfo.QL700.W62RB.ordinal() for the LabelNameIndex when I should have been using LabelInfo.QL700.W62.ordinal().
Works perfectly now!

Find dynamic image on sikuliX created problems with buffer

I'm trying to find an image that I create previously inside an empty template with this function that insert text on it receiving color, content and font and return the path of generate image:
the template
public String insertTextOnBlanck(String colorLetter,String text,Font font) {
//path is a private varibable initialized with the constructor
File blankFile = new File("images/dinamic/"+path);
BufferedImage image = null;
String exit_path = null;
try {
image = ImageIO.read(blankFile);
int type = image.getType() == 0? BufferedImage.TYPE_INT_ARGB : image.getType();
Graphics2D g2 = image.createGraphics();
FontMetrics metrics = g2.getFontMetrics(font);
BufferedImage resizeImage = resizeImage(image,type, text,metrics);
image.flush();
int w = resizeImage.getWidth();
int h = resizeImage.getHeight();
g2 = resizeImage.createGraphics();
g2.setColor(Color.decode(colorLetter));
g2.setFont(font);
// Get the FontMetrics
int x = (w - metrics.stringWidth(text)) / 2;
int y = (metrics.getAscent() + (h - (metrics.getAscent() + metrics.getDescent())) / 2);
g2.setBackground(Color.decode("#d1e8f8"));
g2.drawString(text, x, y);
g2.dispose();
//create image with text
exit_path = "images/dinamic/changed_"+path;
File file = new File(exit_path);
ImageIO.write(resizeImage, "png", file);
resizeImage.flush();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return exit_path;
}
and this works the fist time when i call this other function
public void dinamicClick(String path,String input,String fontLetter,String colorLetter, int fontType,int size) throws FindFailed {
DinamicImg DimImg = new DinamicImg();
DimImg.setPath(path);
String modPath = DimImg.insertTextOnBlanck(
colorLetter,
input,//Inventario de recurso
new Font(fontLetter,fontType, size)
);
Iterator<Match> myIt = s.findAll(modPath);
while (myIt.hasNext()) {
Location loc = myIt.next().getTarget();
s.click(loc);
}
myIt.remove();
removeFile(modPath);
}
the removeFile function is:
private void removeFile(String toRemove) {
File file = new File(toRemove);
if(file.delete()){
System.out.println(file.getName() + " is deleted!");
}else{
System.out.println("Delete operation is failed.");
}
}
The result:
but next calls dont work at all, just when i change the name of exit path, so i thought was a cache problem but adding ImageIO.setUseCache(false); at start of "insertTextOnBlanck" function still doesn`t work. Im out of ideas please help, thanks.

I resolve it , with the libary org.sikuli.script.ImagePath you ve to reset the paths of the internal cache of SikuliX with ImagePath.reset().

Write text to image in multiple fonts with wrapping in java

I am trying to create an image with a given text and style. eg;
" textStyle(Offer ends 25/12/2016. Exclusions Apply., disclaimer) textStyle(See Details,underline) "
In above line i am splitting and creating a map that stores the first parameter of textStyle block as key and second parameter as value where second param defines the style to be applied on first param. Hence an entry of map will look like .
Now when i iterate over this map to write the text to image i check if the text is overflowing the width. If yes then it breaks the text and adds it to next line in the horizontal center. So for example lets say i am trying to write "Offer ends 25/12/2016. Exclusions Apply." with Arial and font size 12. While writing i find that i can write till "Offer ends 23/12/2016. " only and "Exclusions apply" has to go in next line. But it writes the text in horizontal center neglecting that as there is space left horizontally i can write "See Details" too in the same line.
Please help. Below is the code what i have tried. I have also tried creating a JTextPane and then converting it to image but this cannot be an option as it first creates the frame, makes it visible, writes it and then disposes it. And most of the times i was getting Nullpointer exception on SwingUtilities.invokeAndWait.
Actual : http://imgur.com/7aIlcEQ
Expected http://imgur.com/038zQTZ
public static BufferedImage getTextImage(String textWithoutStyle, Map<String, String> textToThemeMap, Properties prop, int height, int width) {
BufferedImage img = new BufferedImage(width,height,BufferedImage.TYPE_4BYTE_ABGR);
Graphics2D g2d = img.createGraphics();
g2d.setPaint(Color.WHITE);
FontMetrics fm = g2d.getFontMetrics();
Map<String, Font> textToFontMap = new LinkedHashMap<String, Font>();
for(Map.Entry<String, String> entry : textToThemeMap.entrySet()) {
if(StringUtils.isNotBlank(entry.getKey()) && StringUtils.isNotBlank(entry.getValue())) {
Font font = getFont(prop, entry.getValue().trim());
g2d.setFont(font);
fm = g2d.getFontMetrics();
String string = entry.getKey();
char[] chars = null;
int i = 0, pixelWidth = 0;
List<String> newTextList = new ArrayList<String>();
if(fm.stringWidth(string) > (width - 10)) {
chars = string.toCharArray();
for (i = 0; i < chars.length; i++) {
pixelWidth = pixelWidth + fm.charWidth(chars[i]);
if(pixelWidth >= (width - 10)) {
break;
}
}
String newString = WordUtils.wrap(string, i, "\n",false);
String[] splitString = newString.split("\n");
for(String str : splitString) {
newTextList.add(str);
textToFontMap.put(string, font);
}
} else {
newTextList.add(string);
textToFontMap.put(string, font);
}
}
}
Font font = new Font("Arial", Font.BOLD, 14);
int spaceOfLineHeight = (textToFontMap.size() - 1) * 7;
int spaceOfText = textToFontMap.size() * font.getSize();
int totalSpace = spaceOfLineHeight + spaceOfText ;
int marginRemaining = height - totalSpace;
int tempHt = marginRemaining / 2 + 10;
String txt = null;
for(Map.Entry<String, Font> entry : textToFontMap.entrySet()) {
txt = entry.getKey();
font = entry.getValue();
g2d.setFont(font);
fm = g2d.getFontMetrics();
int x = (width - fm.stringWidth(txt)) / 2;
int y = tempHt;
g2d.drawString(txt, x, y);
tempHt = tempHt + fm.getHeight();
}
// g2d.drawString(text.getIterator(), 0, (int)lm.getAscent() + lm.getHeight());
// g2d.dispose();
return img;
}
// Code with JTextPane ------------------------------------------
public static BufferedImage getTextImage(final Map < String, String > textToThemeMap, final Properties prop, final int height, final int width) throws Exception {
JFrame f = new JFrame();
f.setSize(width, height);
final StyleContext sc = new StyleContext();
DefaultStyledDocument doc = new DefaultStyledDocument(sc);
final JTextPane pane = new JTextPane(doc);
pane.setSize(width, height);
// Build the styles
final Paragraph[] content = new Paragraph[1];
Run[] runArray = new Run[textToThemeMap.size()];
int i = 0;
for (Map.Entry < String, String > entry: textToThemeMap.entrySet()) {
if (StringUtils.isNotBlank(entry.getValue().trim()) && StringUtils.isNotBlank(entry.getKey().trim())) {
Run run = new Run(entry.getValue().trim(), entry.getKey());
runArray[i++] = run;
}
}
content[0] = new Paragraph(null, runArray);
/*createDocumentStyles(sc, prop,textToThemeMap.values());
addText(pane, sc, sc.getStyle("default"), content);
pane.setEditable(false);*/
try {
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
try {
createDocumentStyles(sc, prop, textToThemeMap.values());
} catch (MalformedURLException e) {
//e.printStackTrace();
}
addText(pane, sc, sc.getStyle("default"), content);
pane.setEditable(false);
}
});
} catch (Exception e) {
System.out.println("Exception when constructing document: " + e);
}
f.getContentPane().add(pane);
f.setVisible(true);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
Graphics2D gd = img.createGraphics();
f.paint(gd);
f.dispose();
/*ImageIO.write(img, "png", new File("C:\\Users\\spande0\\Desktop\\a.png"));
System.out.println("done");*/
return img;
}

I suspect the issue is in your 'Y' computation.
int spaceOfLineHeight = (newTextList.size() - 1) * 7;
int spaceOfText = newTextList.size() * font.getSize();
int totalSpace = spaceOfLineHeight + spaceOfText;
int marginRemaining = height - totalSpace;
int tempHt = marginRemaining / 2 + 10;
You have to keep the height occupied by the previous lines, and add it to the current 'Y'.
At the moment, for all the lines, the 'Y' values is same.
Declare prevHeight outside the for loop. and then do the following.
int tempHt = marginRemaining / 2 + 10;
tempHT += prevHeight;
prevHeight = tempHeight
Based on the comments, I will suggest you to break down your function into two smaller functions.
// Loop through the strings and find out how lines are split and calculate the X, Y
// This function will give the expected lines
splitLinesAndComputeResult
// Just render the lines
renderLines

Write multi line text on an image using Java

I looked at java.awt.Graphics documentation, stackoverflow, could not find a solution. I have in input two things, an image file and the multi line text (paragraph). I need to write the multi line text on the image file and then save it as a new image. Wondering if I am missing something really simple here.
I am open to using any good third party libraries as well.
final BufferedImage image = ImageIO.read(new File("c:/anil/Lenna.png"));
Graphics g = image.getGraphics();
g.setFont(g.getFont().deriveFont(30f));
g.drawString("Hello world", 100, 100);
g.dispose();
Above code writes just a single line on the image.

if you want to draw several lines you have to do it explicitly...
so first step is to 'detect' lines
String str = ... //some text with line breaks;
String [] lines = str.spilt("\n"); //breaking the lines into an array
second step is to draw all lines
Graphics g = image.getGraphics();
g.setFont(g.getFont().deriveFont(30f));
int lineHeight = g.getFontMetrics().getHeight();
//here comes the iteration over all lines
for(int lineCount = 0; lineCount < lines.length; lineCount ++){ //lines from above
int xPos = 100;
int yPos = 100 + lineCount * lineHeight;
String line = lines[lineCount];
g.drawString(line, xpos, yPos);
}
g.dispose();

JLabel accepts simple html to format text. Then you can paint it on your image:
JLabel l=new JLabel("<html>line1<br>line2");
l.setSize(l.getPrefferedSize());
g.translate(10,10); // fixed location
l.paint(g);
edit: complete example
public class OP_32110247 extends JPanel {
private final JLabel l = new JLabel();
private final BufferedImage image;
public OP_32110247(String imgfile, String txt) throws IOException {
image = ImageIO.read(new URL(imgfile));
l.setText(txt);
l.setFont(getFont().deriveFont(Font.BOLD,30f));
l.setSize(l.getPreferredSize());
l.setForeground(Color.GREEN);
Dimension d = new Dimension(image.getWidth(), image.getHeight());
setPreferredSize(d);
}
#Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Dimension d = getSize();
g.drawImage(image, 0, 0, null);
//place text in center of image
g.translate((d.width-l.getWidth())/2, (d.height-l.getHeight())/2);
l.paint(g);
}
public static void main(String[] args) throws IOException {
String txt = "<html>line1<br>line2";
String image = "http://kysoft.pl/proj/java/j+c.png";
JFrame f = new JFrame();
f.setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
f.setContentPane(new OP_32110247(image,txt));
f.pack();
f.setVisible(true);
}
}

The best solution is to extend JLabel and override paintComponent. Create the Label with the image required. After calling super.paintComponent draw your text, each line positioning below another using the font metrics. Something like below:
class ImageWithTextLabel extends JLabel {
List<String> lines = new ArrayList<>();
Point textPosition = new Point(0,0);
private Font textFont;
private ImageWithTextLabel(Icon image) {
super(image);
}
public void addText(String text) {
lines.add(text);
}
public void setTextPosition(Point textPosition) {
this.textPosition = textPosition;
}
#Override protected void paintComponent(Graphics g) {
super.paintComponent(g);
int from = textPosition.y ;
g.setFont(textFont);
for (String line : lines) {
g.drawString(line, textPosition.x, from);
from += g.getFontMetrics().getHeight();
}
}
public void setTextFont(Font font) {
textFont = font;
}
}

see Drawing Multiple Lines of Text(Oracle Java Tutorials) and complete code
use LineBreakMeasurer:
int width = 400;
int height = 500;
BufferedImage bufferedImage = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = bufferedImage.createGraphics();
g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2d.setColor(Color.MAGENTA);
Hashtable<TextAttribute,Object> map = new Hashtable<TextAttribute,Object>();
map.put(TextAttribute.FAMILY, "微软雅黑");
map.put(TextAttribute.SIZE,new Float(18.0));
AttributedString vanGogh = new AttributedString(
"Many people 中国 believe that Vincent van Gogh painted his best works " +
"during the two-year period he spent in Provence. Here is where he " +
"painted The Starry Night--which some consider to be his greatest " +
"work of all. However, as his artistic brilliance reached new " +
"heights in Provence, his physical and mental health plummeted. ",
map);
AttributedCharacterIterator paragraph = vanGogh.getIterator();
int paragraphStart = paragraph.getBeginIndex();
int paragraphEnd = paragraph.getEndIndex();
FontRenderContext frc = g2d.getFontRenderContext();
LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(paragraph, frc);
float breakWidth = 250f;
float drawPosY = 20;
float drawPosx = 0f;
lineMeasurer.setPosition(paragraphStart);
while(lineMeasurer.getPosition()< paragraphEnd ){
TextLayout layout = lineMeasurer.nextLayout(breakWidth);
drawPosx = layout.isLeftToRight()?0:breakWidth-layout.getAdvance();
drawPosY += layout.getAscent();
layout.draw(g2d,drawPosx,drawPosY);
drawPosY += layout.getDescent() + layout.getLeading();
}
g2d.dispose();
File file = new File("myimage.png");
ImageIO.write(bufferedImage,"png",file);
file = new File("myimage.jpg");
ImageIO.write(bufferedImage,"jpg",file);

Loading an animated image to a BufferedImage array

I'm trying to implement animated textures into an OpenGL game seamlessly. I made a generic ImageDecoder class to translate any BufferedImage into a ByteBuffer. It works perfectly for now, though it doesn't load animated images.
I'm not trying to load an animated image as an ImageIcon. I need the BufferedImage to get an OpenGL-compliant ByteBuffer.
How can I load every frames as a BufferedImage array in an animated image ?
On a similar note, how can I get the animation rate / period ?
Does Java handle APNG ?

The following code is an adaption from my own implementation to accommodate the "into array" part.
The problem with gifs is: There are different disposal methods which have to be considered, if you want this to work with all of them. The code below tries to compensate for that. For example there is a special implementation for "doNotDispose" mode, which takes all frames from start to N and paints them on top of each other into a BufferedImage.
The advantage of this method over the one posted by chubbsondubs is that it does not have to wait for the gif animation delays, but can be done basically instantly.
BufferedImage[] array = null;
ImageInputStream imageInputStream = ImageIO.createImageInputStream(new ByteArrayInputStream(data)); // or any other source stream
Iterator<ImageReader> imageReaders = ImageIO.getImageReaders(imageInputStream);
while (imageReaders.hasNext())
{
ImageReader reader = (ImageReader) imageReaders.next();
try
{
reader.setInput(imageInputStream);
frames = reader.getNumImages(true);
array = new BufferedImage[frames];
for (int frameId : frames)
{
int w = reader.getWidth(0);
int h = reader.getHeight(0);
int fw = reader.getWidth(frameId);
int fh = reader.getHeight(frameId);
if (h != fh || w != fw)
{
GifMeta gm = getGifMeta(reader.getImageMetadata(frameId));
// disposalMethodNames: "none", "doNotDispose","restoreToBackgroundColor","restoreToPrevious",
if ("doNotDispose".equals(gm.disposalMethod))
{
image = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
Graphics2D g = (Graphics2D) image.getGraphics();
for (int f = 0; f <= frameId; f++)
{
gm = getGifMeta(reader.getImageMetadata(f));
if ("doNotDispose".equals(gm.disposalMethod))
{
g.drawImage(reader.read(f), null, gm.imageLeftPosition, gm.imageTopPosition);
}
else
{
// XXX "Unimplemented disposalMethod (" + getName() + "): " + gm.disposalMethod);
}
}
g.dispose();
}
else
{
image = reader.read(frameId);
// XXX "Unimplemented disposalMethod (" + getName() + "): " + gm.disposalMethod;
}
}
else
{
image = reader.read(frameId);
}
if (image == null)
{
throw new NullPointerException();
}
array[frame] = image;
}
}
finally
{
reader.dispose();
}
}
return array;
private final static class GifMeta
{
String disposalMethod = "none";
int imageLeftPosition = 0;
int imageTopPosition = 0;
int delayTime = 0;
}
private GifMeta getGifMeta(IIOMetadata meta)
{
GifMeta gm = new GifMeta();
final IIOMetadataNode gifMeta = (IIOMetadataNode) meta.getAsTree("javax_imageio_gif_image_1.0");
NodeList childNodes = gifMeta.getChildNodes();
for (int i = 0; i < childNodes.getLength(); ++i)
{
IIOMetadataNode subnode = (IIOMetadataNode) childNodes.item(i);
if (subnode.getNodeName().equals("GraphicControlExtension"))
{
gm.disposalMethod = subnode.getAttribute("disposalMethod");
gm.delayTime = Integer.parseInt(subnode.getAttribute("delayTime"));
}
else if (subnode.getNodeName().equals("ImageDescriptor"))
{
gm.imageLeftPosition = Integer.parseInt(subnode.getAttribute("imageLeftPosition"));
gm.imageTopPosition = Integer.parseInt(subnode.getAttribute("imageTopPosition"));
}
}
return gm;
}

I don't think Java supports APNG by default, but you can use an 3rd party library to parse it:
http://code.google.com/p/javapng/source/browse/trunk/javapng2/src/apng/com/sixlegs/png/AnimatedPngImage.java?r=300
That might be your easiest method. As for getting the frames from an animated gif you have to register an ImageObserver:
new ImageIcon( url ).setImageObserver( new ImageObserver() {
public void imageUpdate( Image img, int infoFlags, int x, int y, int width, int height ) {
if( infoFlags & ImageObserver.FRAMEBITS == ImageObserver.FRAMEBITS ) {
// another frame was loaded do something with it.
}
}
});
This loads asynchronously on another thread so imageUpdate() won't be called immediately. But it will be called for each frame as it parses it.
http://docs.oracle.com/javase/1.4.2/docs/api/java/awt/image/ImageObserver.html