Extracting images from pptx with apache poi

Extracting images from pptx with apache poi - java

I'm trying to extract slides from a ppt file with Apache POI, there is no problem in that, but now I intend to open pptx files and do the same, does anyone knows how to??
this is the code to extract images from ppt files:
public ImageIcon display() throws JPresentationException {
Background background;
background = slides[current].getBackground();
Fill f = background.getFill();
Color color = f.getForegroundColor();
Dimension dimension = ppt.getPageSize();
shapes = slides[current].getShapes();
BufferedImage img = new BufferedImage(dimension.width, dimension.height, BufferedImage.TYPE_INT_RGB);
Graphics2D graphics = img.createGraphics();
graphics.setPaint(color);
graphics.fill(new Rectangle2D.Float(0, 0, dimension.width, dimension.height));
slides[current].draw(graphics);
ImageIcon icon = new ImageIcon(img);
return icon;
}

Although you can refer to some example code from the POI project itself
below is what you should be looking for; Hope this helps;
private ImageIcon generateFromPPTX(int index) {
ImageIcon icon = null;
XMLSlideShow slideShowPPTX = null;
FileInputStream pptInputStream = null;
XSLFSlide [] allSlides = null;
XSLFSlide singleSlide = null;
BufferedImage memoryImage = null;
Graphics2D graphics = null;
try{
pptInputStream = new FileInputStream("somepptx-file.pptx");
slideShowPPTX = new XMLSlideShow(pptInputStream);
allSlides = slideShowPPTX.getSlides();
if(allSlides == null || allSlides.length == 0) {
System.out.println("Empty presentation!");
return null;
}
singleSlide = allSlides [index];
memoryImage = new BufferedImage(slideShowPPTX.getPageSize().width, slideShowPPTX.getPageSize().height, BufferedImage.TYPE_INT_ARGB);
graphics = memoryImage.createGraphics();
// Only few rendering hints set but you can set as many as you need depending on your need
graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
graphics.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
graphics.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
singleSlide.draw(graphics);
icon = new ImageIcon(memoryImage);
}
catch(IOException exception){
System.err.println("Input/output Exception:");
exception.printStackTrace();
}
finally{
slideShowPPTX = null;
allSlides = null;
singleSlide = null;
memoryImage = null;
graphics = null;
if(pptInputStream != null){
try {
pptInputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
pptInputStream = null;
}
}
return icon;
}

Here's the way to do it in VBS, Maybe you can convert :
Sub SaveAllPictures()
Dim ap As Presentation: Set ap = ActivePresentation
Dim savePath As String
savePath = "C:\Users\me\Desktop\files\"
Dim i As Integer
Dim sl As Slide
Dim sh As Shape
For Each sl In ap.Slides
For Each sh In sl.Shapes
If sh.Type = msoPicture Then
sh.Export PathName:=savePath & sh.Name & CStr(i) & ".png", Filter:=ppShapeFormatPNG
i = i + 1
End If
Next
Next
End Sub

Related

How to place watermark on different parts of the image continously

File sourceImageFile = new File("C:\Users\Documents\NetBeansProjects\MyProject\src\asian\paints\images\stations.png");
BufferedImage sourceImage = ImageIO.read(sourceImageFile);
File watermarkImageFile = new File("C:\\Users\\Documents\\NetBeansProjects\\MyProject\\src\\asian\\paints\\images\\error_indicate.png");
BufferedImage watermarkImage = ImageIO.read(watermarkImageFile);
File destImageFile = new File("C:\\Users\\Desktop\\watermarked.png");
// initializes necessary graphic properties
Graphics2D g2d = (Graphics2D) sourceImage.getGraphics();
AlphaComposite alphaChannel = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.3f);
g2d.setComposite(alphaChannel);
new Timer(0, new ActionListener()
{
#Override
public void actionPerformed(ActionEvent e)
{
try {
Jedis jedis = new Jedis("localhost");
// calculates the coordinate where the image is painted
int topLeftX = Integer.parseInt(jedis.get("x")) ;
int topLeftY = Integer.parseInt(jedis.get("y")) ;
System.out.println("x " + topLeftX);
System.out.println("y " + topLeftY);
// paints the image watermark
g2d.drawImage(watermarkImage, topLeftX, topLeftY, null);
ImageIO.write(sourceImage, "png", destImageFile);
g2d.dispose();
// System.out.println("The image watermark is added to the image.");
ImageIcon iconLogo = new ImageIcon("C:\\Users\\Desktop\\watermarked.png");
// In init() method write this code
jLabel1.setIcon(iconLogo);
} catch (IOException ex) {
System.err.println(ex);
}
}
}).start();
The above program changes the watermark position only for the first time when the executed. It will not change its position after that.

The part frames of a gif image which is created by using AnimatedGifEncoder class are not transparent

I have been stuck in a problem for a long time, that is when I use AnimatedGifEncoder class to create transparent GIF images, there are always a part of frames is opaque. There is my code.
AnimatedGifEncoder gifEncoder = new AnimatedGifEncoder();
gifEncoder.start("/Users/fengjiakang/Documents/result.gif");
gifEncoder.setRepeat(0);
gifEncoder.setFrameRate(800);
gifEncoder.setQuality(20);
gifEncoder.setTransparent(new Color(250, 250, 250));
Graphics2D g2d = null;
BufferedImage bg = null;
BufferedImage parentPngImg = null;
BufferedImage childImg = null;
ExecutorService executorService = Executors.newFixedThreadPool(13);
List<Future<BufferedImage>> futureResult = new ArrayList<Future<BufferedImage>>(13);
for (int i = 0; i < imageFrames.size(); i++) {
futureResult.add(executorService.submit(new MyCallable(imageFrames.get(i).getLayers(), imageFrames.get(i).getIdx())));
}
executorService.shutdown();
for (Future<BufferedImage> returnFrame : futureResult) {
BufferedImage bufferedImage = returnFrame.get();
gifEncoder.addFrame(bufferedImage);
}
gifEncoder.finish();
The MyCallable code is :
public BufferedImage call() throws Exception {
PicService picService = new PicServiceImpl();
BufferedImage childImg = null;
ImageLayer layer = imageLayers.get(0);
BufferedImage bg = null;
try {
bg = ImageIO.read(new File(pre + layer.getAsset_path().trim()));
BufferedImage parentPngImg = new BufferedImage(((Double) (bg.getWidth() * imageLayers.get(0).getW())).intValue(), ((Double) (bg.getHeight() * imageLayers.get(0).getH())).intValue(),
BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = parentPngImg.createGraphics();
//set a background color for each frame so that can use
//setTransparent() method to make frame transparent.
g2d.setColor(new Color(250, 250, 250));
g2d.fillRect(0, 0, bg.getWidth(), bg.getHeight());
for (int i = 0; i < imageLayers.size(); i++) {
childImg = ImageIO.read(new File(pre + imageLayers.get(i).getAsset_path().trim()));
picService.overlapImage(childImg, parentPngImg, imageLayers.get(i).getCx(), imageLayers.get(i).getCy(),
imageLayers.get(i).getW(), imageLayers.get(i).getH(), imageLayers.get(i).getR());
}
return parentPngImg;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
And the result as below:
Can anybody help me to solve this problem?
Thanks in advance

Why the tensorflow graph file is not able to take image as feed in java?

Unable to feed image to the tensorflow graph that is generated using python.
All the tensorflow java libraries are installed and tested.
Model graph takes an input image and spits out image back.
Error message : Exception in thread "main" java.lang.NoClassDefFoundError: org/tensorflow/Graph
The error message occurs when the program executes after the line this line in code: Tensor image3 = constructAndExecuteGraphToNormalizeImage(imageBytes);
Code :
public class tensorflow_java {
public static void main(String[] args)throws IOException{
String modelDir = "/home/shorav/tensorflow_java/";
String imageFile = "/home/shorav/tensorflow_java/2.png";
byte[] graphDef = readAllBytesOrExit(Paths.get(modelDir, "frozen_inference_graph.pb"));
File input = new File(imageFile);
BufferedImage image = ImageIO.read(input);
int width= image.getWidth();
int height= image.getHeight();
float div = Math.max(width,height);
float ratio2 = 513 / div ;
BufferedImage resized = resize(image,(int)(ratio2*width),(int)(ratio2*height));
File output = new File("2.png");
ImageIO.write(resized, "png", output);
File input2 = new File("2.png");
BufferedImage image2 = ImageIO.read(input2);
byte[] imageBytes = readAllBytesOrExit(Paths.get(imageFile));
Tensor<Float> image3 = constructAndExecuteGraphToNormalizeImage(imageBytes);
System.out.println("I created tensor");
Graph g = new Graph();
g.importGraphDef(graphDef);
Session s = new Session(g);
Tensor result =s.runner().feed("ImageTensor", image3).fetch("SemanticPredictions").run().get(0);
}
private static byte[] readAllBytesOrExit(Path path) {
try {
return Files.readAllBytes(path);
} catch (IOException e) {
System.err.println("Failed to read");
System.exit(1);
}
return null;
}
private static BufferedImage resize(BufferedImage img, int height, int width) {
Image tmp = img.getScaledInstance(width, height, Image.SCALE_SMOOTH);
BufferedImage resized = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = resized.createGraphics();
g2d.drawImage(tmp, 0, 0, null);
g2d.dispose();
return resized;
}
private static Tensor<Float> constructAndExecuteGraphToNormalizeImage(byte[] imageBytes) {
try (Graph g = new Graph()) {
GraphBuilder b = new GraphBuilder(g);
final int H = 513;
final int W = 513;
final float mean = 117f;
final float scale = 1f;
final Output<String> input = b.constant("input", imageBytes);
final Output<Float> output =
b.div(
b.sub(
b.resizeBilinear(
b.expandDims(
b.cast(b.decodeJpeg(input, 3), Float.class),
b.constant("make_batch", 0)),
b.constant("size", new int[] {H, W})),
b.constant("mean", mean)),
b.constant("scale", scale));
try (Session s = new Session(g)) {
return s.runner().fetch(output.op().name()).run().get(0).expect(Float.class);
}
}
}
}

How to convert image icon in jlabel to byte without using filechooser

I'm just new at java development, i can insert image into database by using file chooser and then convert to byte,the problem is i want to save a default image into database without using file chooser.I set the label with a specific image through properties.Can i convert the default image i set to label?
any help will be appreciated.

Yes, it's possible. You need to convert the Icon from the JLabel to BufferedImage, from there you can simply pass it through the ImageIO API to get a byte[] array
Icon icon = null;
BufferedImage img = new BufferedImage(icon.getIconWidth(), icon.getIconHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = img.createGraphics();
icon.paintIcon(null, g2d, 0, 0);
g2d.dispose();
try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
try {
ImageIO.write(img, "png", ios);
// Set a flag to indicate that the write was successful
} finally {
ios.close();
}
byte[] bytes = baos.toByteArray();
} catch (IOException ex) {
ex.printStackTrace();
}

my project part code:
..........
BufferedImage bfi = getBufferedImage(iconToImage(my_Jlabel.getIcon()));
ByteArrayOutputStream bs = new ByteArrayOutputStream();
ImageIO.write(bfi, "png", bs);
byte[] byteArray = bs.toByteArray();
pstmt.setBytes(17, byteArray);
.............
public static BufferedImage getBufferedImage(Image img){
if (img instanceof BufferedImage)
{
return (BufferedImage) img;
}
BufferedImage bimage = new BufferedImage(img.getWidth(null),
img.getHeight(null), BufferedImage.TYPE_INT_ARGB);
Graphics2D bGr = bimage.createGraphics();
bGr.drawImage(img, 0, 0, null);
bGr.dispose();
return bimage;
}
static Image iconToImage(Icon icon) {
if (icon instanceof ImageIcon) {
return ((ImageIcon)icon).getImage();
}
else {
int w = icon.getIconWidth();
int h = icon.getIconHeight();
GraphicsEnvironment ge =
GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gd = ge.getDefaultScreenDevice();
GraphicsConfiguration gc = gd.getDefaultConfiguration();
BufferedImage image = gc.createCompatibleImage(w, h);
Graphics2D g = image.createGraphics();
icon.paintIcon(null, g, 0, 0);
g.dispose();
return image;
}
}

Visual signature with pdfbox 1.8.8

I'm trying to produce PDF with visual signature and pdfbox. I have two streams and it seems that pdfbox can deal only with files. I didn't manage to make it work without three temporary files. I can see from here that API has changed, but still it deals with files.
public void signPdf(InputStream originalPdf, OutputStream signedPdf,
InputStream image, float x, float y,
String name, String location, String reason) {
File temp = null;
File temp2 = null;
File scratchFile = null;
RandomAccessFile randomAccessFile = null;
OutputStream tempOut = null;
InputStream tempIn = null;
try {
/* Copy original to temporary file */
temp = File.createTempFile("signed1", ".tmp");
tempOut = new FileOutputStream(temp);
copyStream(originalPdf, tempOut);
tempOut.close();
/* Read temporary file to second temporary file and stream */
tempIn = new FileInputStream(temp);
temp2 = File.createTempFile("signed2", ".tmp");
tempOut = new FileOutputStream(temp2);
copyStream(tempIn, tempOut);
tempIn.close();
tempIn = new FileInputStream(temp2);
scratchFile = File.createTempFile("signed3", ".bin");
randomAccessFile = new RandomAccessFile(scratchFile, "rw");
/* Read temporary file */
PDDocument document = PDDocument.load(temp, randomAccessFile);
document.getCurrentAccessPermission().setCanModify(false);
PDSignature signature = new PDSignature();
signature.setFilter(PDSignature.FILTER_ADOBE_PPKLITE);
signature.setSubFilter(PDSignature.SUBFILTER_ADBE_PKCS7_DETACHED);
signature.setName(name);
signature.setLocation(location);
signature.setReason(reason);
signature.setSignDate(Calendar.getInstance());
PDVisibleSignDesigner signatureDesigner = new PDVisibleSignDesigner(
document, image, document.getNumberOfPages());
signatureDesigner.xAxis(250).yAxis(60).zoom(-90).signatureFieldName("signature");
PDVisibleSigProperties signatureProperties = new PDVisibleSigProperties();
signatureProperties.signerName(name).signerLocation(location)
.signatureReason(reason).preferredSize(0).page(1)
.visualSignEnabled(true).setPdVisibleSignature(signatureDesigner)
.buildSignature();
SignatureOptions options = new SignatureOptions();
options.setVisualSignature(signatureProperties);
document.addSignature(signature, dataSigner, options);
/* Sign */
document.saveIncremental(tempIn, tempOut);
document.close();
tempIn.close();
/* Copy temporary file to an output stream */
tempIn = new FileInputStream(temp2);
copyStream(tempIn, signedPdf);
} catch (IOException e) {
logger.error("PDF signing failure", e);
} catch (COSVisitorException e) {
logger.error("PDF creation failure", e);
} catch (SignatureException e) {
logger.error("PDF signing failure", e);
} finally {
closeStream(originalPdf);
closeStream(signedPdf);
closeStream(randomAccessFile);
closeStream(tempOut);
deleteTempFile(temp);
deleteTempFile(temp2);
deleteTempFile(scratchFile);
}
}
private void deleteTempFile(File tempFile) {
if (tempFile != null && tempFile.exists() && !tempFile.delete()) {
tempFile.deleteOnExit();
}
}
private void closeStream(Closeable is) {
if (is!= null) {
try {
is.close();
} catch (IOException e) {
logger.error("failure", e);
}
}
}
private void copyStream(InputStream is, OutputStream os) throws IOException {
byte[] buffer = new byte[1024];
int c;
while ((c = is.read(buffer)) != -1) {
os.write(buffer, 0, c);
}
is.close();
}
Apart from file madness I don't see any text on the signature. This is how result looks like:
and this is how it looks, when I do similar thing with itext library
Why name, location and reason missing from the visual signature representation? How can I fix that?

Why name, location and reason missing from the visual signature representation?
They are not there because they are not drawn.
The default way of iText to represent a visualized signature is by adding those information to the visualization.
The default way of PDFBox' PDVisibleSigBuilder to represent a visualized signature is without such information.
Neither is wrong or right, both merely are defaults.
The canonical place where people shall look for such information is the signature panel after all.
How can I fix that?
The actual contents of the signature visualization are created by a PDVisibleSigBuilder instance during signatureProperties.buildSignature():
public void buildSignature() throws IOException
{
PDFTemplateBuilder builder = new PDVisibleSigBuilder();
PDFTemplateCreator creator = new PDFTemplateCreator(builder);
setVisibleSignature(creator.buildPDF(getPdVisibleSignature()));
}
Thus, by replacing
signatureProperties.signerName(name).signerLocation(location)
.signatureReason(reason).preferredSize(0).page(1)
.visualSignEnabled(true).setPdVisibleSignature(signatureDesigner)
.buildSignature();
in your code by
signatureProperties.signerName(name).signerLocation(location)
.signatureReason(reason).preferredSize(0).page(1)
.visualSignEnabled(true).setPdVisibleSignature(signatureDesigner);
PDFTemplateBuilder builder = new ExtSigBuilder();
PDFTemplateCreator creator = new PDFTemplateCreator(builder);
signatureProperties.setVisibleSignature(creator.buildPDF(signatureProperties.getPdVisibleSignature()));
for a customized version ExtSigBuilder of this PDVisibleSigBuilder class, you can draw anything you want there, e.g.:
class ExtSigBuilder extends PDVisibleSigBuilder
{
String fontName;
public void createImageForm(PDResources imageFormResources, PDResources innerFormResource,
PDStream imageFormStream, PDRectangle formrect, AffineTransform affineTransform, PDJpeg img)
throws IOException
{
super.createImageForm(imageFormResources, innerFormResource, imageFormStream, formrect, affineTransform, img);
PDFont font = PDType1Font.HELVETICA;
fontName = getStructure().getImageForm().getResources().addFont(font);
logger.info("Added font to image form: " + fontName);
}
public void injectAppearanceStreams(PDStream holderFormStream, PDStream innterFormStream, PDStream imageFormStream,
String imageObjectName, String imageName, String innerFormName, PDVisibleSignDesigner properties)
throws IOException
{
super.injectAppearanceStreams(holderFormStream, innterFormStream, imageFormStream, imageObjectName, imageName, innerFormName, properties);
String imgFormComment = "q " + 100 + " 0 0 50 0 0 cm /" + imageName + " Do Q\n";
String text = "BT /" + fontName + " 10 Tf (Hello) Tj ET\n";
appendRawCommands(getStructure().getImageFormStream().createOutputStream(), imgFormComment + text);
logger.info("Added text commands to image form: " + text);
}
}
writes "Hello" in Helvetica at size 10 atop the lower left of the image form (the form actually displaying something).
PS: In my opinion the object oriented structure behind this should be completely overhauled.

Display the text over the signatory some time it doesn't look nice. For me, I create new image base on the text that I want to display. And merge it with the signatory image. I can add background for signatory image (company name watermark)
Here is the code create new signatory image with text and background:
public class ImageSignatory {
public static void main(String[] args) {
DateFormat df = new SimpleDateFormat("MM.dd.yyyy");
Date today = Calendar.getInstance().getTime();
String reportDate = df.format(today);
String text = "Signature eletronic Company AA DUC NGUYEN - Date " + reportDate;
String background = "background.png";
String signImage = "sign.jpg";
String textImage = createImageFromText(text);
String imageResultURL = null ;
try {
String mergedImage = mergeTwoImage(signImage, textImage);
imageResultURL = addBackgroundToImage(background, mergedImage);
} catch (Exception ex) {
}
}
public static String StringDivider(String s) {
StringBuilder sb = new StringBuilder(s);
int i = 0;
while ((i = sb.indexOf(" ", i + 30)) != -1) {
sb.replace(i, i + 1, "\n");
}
return sb.toString();
}
public static BufferedImage toBufferedImage(Image img) {
if (img instanceof BufferedImage) {
return (BufferedImage) img;
}
BufferedImage bimage = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB);
Graphics2D bGr = bimage.createGraphics();
bGr.drawImage(img, 0, 0, null);
bGr.dispose();
return bimage;
}
public static String addBackgroundToImage(String backgroundPATH, String imagePath) {
try {
String imageResult = "result.jpg";
Image backgroundImage = ImageIO.read(new File(backgroundPATH));
int width = backgroundImage.getWidth(null);
int height = backgroundImage.getHeight(null);
Image signAndText = ImageIO.read(new File(imagePath));
signAndText = signAndText.getScaledInstance(width, height, Image.SCALE_SMOOTH);
signAndText = toBufferedImage(signAndText);
BufferedImage combined = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics g2 = combined.getGraphics();
g2.drawImage(backgroundImage, 0, 0, null);
g2.drawImage(signAndText, 0, 0, null);
g2.dispose();
ImageIO.write(combined, "JPG", new File(imageResult));
return imageResult;
} catch (IOException ex) {
return null;
}
}
public static String mergeTwoImage(String first, String second) {
try {
String tempFileName = "merged_image.png";
Image signatoryImage = ImageIO.read(new File(first));
Image addtionalTextImage = ImageIO.read(new File(second));
float ratio = (float) signatoryImage.getWidth(null) / (float) addtionalTextImage.getWidth(null);
addtionalTextImage = addtionalTextImage.getScaledInstance((int) (ratio * (float) addtionalTextImage.getWidth(null)), (int) (ratio * (float) addtionalTextImage.getHeight(null)), Image.SCALE_SMOOTH);
addtionalTextImage = toBufferedImage(addtionalTextImage);
BufferedImage combinedTemp = new BufferedImage(signatoryImage.getWidth(null), signatoryImage.getHeight(null) + (int) (ratio * (float) addtionalTextImage.getHeight(null)), BufferedImage.TYPE_INT_ARGB);
Graphics g = combinedTemp.getGraphics();
g.drawImage(signatoryImage, 0, 0, null);
g.drawImage(addtionalTextImage, 0, signatoryImage.getHeight(null), null);
g.dispose();
ImageIO.write(combinedTemp, "PNG", new File(tempFileName));
return tempFileName;
} catch (IOException ex) {
return null;
}
}
public static String createImageFromText(String text) {
String tempFileName = "text.png";
text = StringDivider(text);
String[] textParts = text.split("\n");
BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = img.createGraphics();
Font font = new Font("Arial", Font.PLAIN, 48);
g2d.setFont(font);
FontMetrics fm = g2d.getFontMetrics();
int width = 0;
for (String textPart : textParts) {
int tempWidth = fm.stringWidth(textPart);
if (tempWidth > width) {
width = tempWidth;
}
}
width += 10;
int oneLineHeight = fm.getHeight();
int height = (oneLineHeight) * textParts.length;
g2d.dispose();
img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
g2d = img.createGraphics();
g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE);
g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE);
g2d.setFont(font);
fm = g2d.getFontMetrics();
g2d.setColor(Color.BLACK);
int index = 0;
for (String textPart : textParts) {
g2d.drawString(textPart, 5, (oneLineHeight) * index + fm.getAscent());
index++;
}
g2d.dispose();
try {
ImageIO.write(img, "PNG", new File(tempFileName));
} catch (IOException ex) {
return null;
}
return tempFileName;
}
public static void removeFile(String fileName) {
try {
File file = new File(fileName);
file.delete();
} catch (Exception ex) {
}
}
}

Develop Reference

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

Extracting images from pptx with apache poi - java

Related

How to place watermark on different parts of the image continously

The part frames of a gif image which is created by using AnimatedGifEncoder class are not transparent

Why the tensorflow graph file is not able to take image as feed in java?

How to convert image icon in jlabel to byte without using filechooser

Visual signature with pdfbox 1.8.8

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