i have be trying to upload the signature captured from the codename one signature to my php server.the problem is that the image uploaded is a black image.Below is my code.how can i fix this
SignatureComponent sig = new SignatureComponent();
sig.addActionListener((evt)-> {
try{
img = sig.getSignatureImage();
}catch(Exception ex){
ex.printStackTrace();
}
// Now we can do whatever we want with the image of this signature.
});
Button sv = new Button("save");
sv.addActionListener(new ActionListener(){
#Override
public void actionPerformed(ActionEvent evt) {
try {
Label it = new Label();
it.setIcon(img);
orderHome.add(it);
ImageIO imgIO= ImageIO.getImageIO();
ByteArrayOutputStream out = new ByteArrayOutputStream();
imgIO.save(img, out,ImageIO.FORMAT_JPEG, 1);
byte[] ba = out.toByteArray();
MultipartRequest request = new MultipartRequest();
String url = Global.url1 + "upload_photo.php";
request.setUrl(url);
request.addData("file",ba,"image/jpeg");
request.addArgument("order_id", order_id);
request.addArgument("customer_id", customer_id);
NetworkManager.getInstance().addToQueue(request);
and the php code
[![image uploaded][1]][1]
<?php
#SESSION_START();
require_once("../includes/functions.php");
$target_path="../uploads/";
$customer_id=$_REQUEST['customer_id'];
$order_id=$_REQUEST['order_id'];
$uid = uniqid();
$file =$uid.".jpg";
$sucess=move_uploaded_file($_FILES["file"]["tmp_name"], $target_path.$file);
the black img is the file which is uploaded to the server.the other shows the screenshot of the running app.i would like to upload the signature as shown in the screenshot
The signature generates a translucent image. JavaSE has some issues with saving translucent images as JPEGs and thus PNG works well. Another alternative would be to create an opaque image and save that as a JPEG e.g.:
Image myImage = Image.create(img.getWidth(), img.getHeight());
myImage.getGraphics().drawImage(img, 0, 0);
The new myImage will be opaque with the white color background.
Related
I tested this code in order to create dialog with image.
final int xSize = 400;
final int ySize = 280;
final Color backgroundColor = Color.WHITE;
final String text = "SQL Browser";
final String version = "Product Version: 1.0";
final Stage aboutDialog = new Stage();
aboutDialog.initModality(Modality.WINDOW_MODAL);
Button closeButton = new Button("Close");
closeButton.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent arg0) {
aboutDialog.close();
}
});
GridPane grid = new GridPane();
grid.setAlignment(Pos.CENTER);
grid.setHgap(10);
grid.setVgap(10);
grid.setPadding(new Insets(25, 25, 25, 25));
Image img = new Image("logo.png");
ImageView imgView = new ImageView(img);
grid.add(imgView, 0, 0);
grid.add(new Text(text), 0, 1);
grid.add(new Text(version), 0, 2);
grid.add(closeButton, 14, 18);
Scene aboutDialogScene = new Scene(grid, xSize, ySize, backgroundColor);
aboutDialog.setScene(aboutDialogScene);
aboutDialog.show();
I placed the image file into the directory /src.
But for some reason the image is not displayed. Can you help me to correct my mistake?
Simply replace this code:
Image img = new Image("logo.png");
with this
Image img = new Image("file:logo.png");
Docu reference.
https://docs.oracle.com/javase/8/javafx/api/javafx/scene/image/Image.html
When you pass a String to the Image class it can be handled in four different ways (copied from docu):
// The image is located in default package of the classpath
Image image1 = new Image("/flower.png");
// The image is located in my.res package of the classpath
Image image2 = new Image("my/res/flower.png");
// The image is downloaded from the supplied URL through http protocol
Image image3 = new Image("http://sample.com/res/flower.png");
// The image is located in the current working directory
Image image4 = new Image("file:flower.png");
The file: prefix is simply an URI scheme, or in other words the counterpart to the http: protocol classifier. This also works in the file browser, or in the web browser... ;)
For further reference, you can take a look at the wiki page of the file URI scheme: https://en.wikipedia.org/wiki/File_URI_scheme
Happy Coding,
Kalasch
Try this:
img = new Image("/logo.png");
If no protocol part indicating a URL (as http: or file:) is given, the file is supposed to reside in the default package. If you want it to put in a different package say com.my.images you add this information in a path like manner:
img = new Image("/com/my/images/logo.png");
Image img = new Image("file:/logo.png");
or way with path:
Image img = new Image("file:c:/logo.png");
or
File f = new File("c:\\logo.png");
Image img = new Image(f.toURI().toString());
also can use:
new Image(file:src/logo.png) //root of project
This functions:
Image image = new Image(getClass()
.getResourceAsStream("ChimpHumanHand.jpg"));
copy and paste the image into folder where source package(source packages in NetBeans IDE) is present. Then
Image image = new Image("a1.jpg");
Image image = new Image("File:a1.jpg");
both will work.
Apparently, this is my code I have been using to get image from my disks to my program.
public void getVehicleImage(){
FileDialog fd = new FileDialog(this);
fd.setFile("*.jpg; *.jpg; *.png; *.gif");
fd.show();
vehicle_path = fd.getDirectory()+fd.getFile();
vehicleFileName.setText(vehicle_path = fd.getFile());
vehicleImagePath.setText(vehicle_path = fd.getDirectory()+fd.getFile());
image.setIcon(new ImageIcon(vehicle_path));
}
How do I fit the image to the size of my jLabel? I have tried using the
getScaledInstance()
but still no good. And also I want to ask if I am using the right code on how to get Image from my disk? I kinda feel it is wrong.
I faced similar problem and did below workaround:
Step1: Read the picture as a BufferedImage from your file system.
BufferedImage image = null;
try {
image = ImageIO.read(new File("fileName.jpg"));
} catch (IOException e) {
e.printStackTrace();
}
Step2: Create a new BufferedImage that is the size of the JLabel
BufferedImage img= image.getScaledInstance(label.width, label.height,
Image.SCALE_SMOOTH);
Step3: Create new ImageIcon from the resized BufferedImage (Step 2)
ImageIcon imageIcon = new ImageIcon(img);
In your case, create a helper method and call it while creating ImageIcon as below:
public void getVehicleImage(){
...................
image.setIcon(new ImageIcon(getScaledImage(vehicle_path)));//call helper here
}
This can be helper function:
public BufferedImage getScaledImage(String imagePath){
BufferedImage image = null;
try {
image = ImageIO.read(new File("fileName.jpg"));
} catch (IOException e) {
e.printStackTrace();
}
BufferedImage img= image.getScaledInstance(label.width, label.height,
Image.SCALE_SMOOTH);
return img;
}
i would like to add a frame to a picture using Java and Javafx and then save the framed picture. What would be the best way to do that?
For example say I have a photo of a landscape and want to add a frame to it. The framed photo should look like this:
You could add two images, first the frame, then the image, to the same canvas like this:
GraphicsContext gc1 = canvas.getGraphicsContext2D();
gc1.drawImage(frameimage,0,0,image.getFitWidth()+20,image.getFitHeight()+20);
GraphicsContext gc = canvas.getGraphicsContext2D();
gc.drawImage(i,10,10,image.getFitWidth(),image.getFitHeight());
and then save them as png (or whatever format you like) using the canvas.snapshot function:
FileChooser fileChooser = new FileChooser();
FileChooser.ExtensionFilter extFilter =new FileChooser.ExtensionFilter("png files (*.png)", "*.png");
fileChooser.getExtensionFilters().add(extFilter);
Stage primaryStage = (Stage) canvas.getScene().getWindow();
File file = fileChooser.showSaveDialog(primaryStage);
if(file != null){
try {
WritableImage writableImage = new WritableImage((int)canvas.getWidth(), (int)canvas.getHeight());
canvas.snapshot(null, writableImage);
RenderedImage renderedImage = SwingFXUtils.fromFXImage(writableImage, null);
File file1 = new File(file.getAbsolutePath()+".png");
file.renameTo(file1);
ImageIO.write(renderedImage, "png", file1);
} catch (IOException ex) {
ex.printStackTrace();
}
I have created a network view diagram using zest framework, this uses SWT display/shell to display the UI. I want to export the UI to an image/pdf.
How to do it? Any ideas?
You can use the SWT GC.copyArea() method to copy the contents of a Control to an Image, then save the Image to file. For example, if you have a Zest GraphViewer, viewer, the following code will copy its contents to a PNG file named out.png.
GC gc = new GC(viewer.getControl());
Rectangle bounds = viewer.getControl().getBounds();
Image image = new Image(viewer.getControl().getDisplay(), bounds);
try {
gc.copyArea(image, 0, 0);
ImageLoader imageLoader = new ImageLoader();
imageLoader.data = new ImageData[] { image.getImageData() };
imageLoader.save("c:\\out.png", SWT.IMAGE_PNG);
} finally {
image.dispose();
gc.dispose();
}
I am working on a JFrame/panel that will contain a button. When the user clicks the button, I want an image (which will be stored in the computer hard disk beforehand) to open on the front screen.
button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
//here i want a code that will somehow open the image from a given directory
}});
Any suggestions on how to go about this ? I have to tell where the image is stored and trigger a virtual 'double click' for the image to pop up on the front screen. Is that even possible using java to synchronize such computer functions?
I don't know a very short way, but I would use something like this (as qick hack to get an impression):
try {
// this is a new frame, where the picture should be shown
final JFrame showPictureFrame = new JFrame("Title");
// we will put the picture into this label
JLabel pictureLabel = new JLabel();
/* The following will read the image */
// you should get your picture-path in another way. e.g. with a JFileChooser
String path = "C:\\Users\\Public\\Pictures\\Sample Pictures\\Koala.jpg";
URL url = new File(path).toURI().toURL();
BufferedImage img = ImageIO.read(url);
/* until here */
// add the image as ImageIcon to the label
pictureLabel.setIcon(new ImageIcon(img));
// add the label to the frame
showPictureFrame.add(pictureLabel);
// pack everything (does many stuff. e.g. resizes the frame to fit the image)
showPictureFrame.pack();
//this is how you should open a new Frame or Dialog, but only using showPictureFrame.setVisible(true); would also work.
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
showPictureFrame.setVisible(true);
}
});
} catch (IOException ex) {
System.err.println("Some IOException accured (did you set the right path?): ");
System.err.println(ex.getMessage());
}
I think this will work ...
Code:
process = new ProcessBuilder("mspaint","yourFileName.jpeg").start();
This will open your image file with mspaint.....
and also use *Java Advanced Imaging (JAI)*
Try this code
try
{
// the line that reads the image file
BufferedImage image;
// work with the image here ...
image = ImageIO.read(new File("C://Users//Neo//Desktop//arduino.jpg"));
jLabel1.setIcon(new ImageIcon(image));
}
catch (IOException e)
{
// log the exception
// re-throw if desired
}
I'm not sure but try this...
try
{
JLabel picture=new JLabel();
ImageIcon ic=new ImageIcon(Toolkit.getDefaultToolkit().getImage(getClass().getResource("C:\\Users\\Desktop\\xyz.jpg")));
picture.setIcon(ic);
}
catch(Exception)
{
}