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Getting ImageIcon- image path in runtime

I'm trying to get the image file path or file name of an ImageIcon. I've created a screen in my Java gui app, which contains properties for a custom JButton (extends JButton). From that screen I'm setting some of the main button properties, as if it is enabled, focusable and its ImageIcon. The problem is that as if now, whenever I use this button class, which is in every screen btw, I'm loading all possible images for ImageIcons when the exdened JButton class is used. That causes the screen to freeze before any of the components are shown, while the images are loaded from classpath. In order to change that, in the settings screen, where I hava a JComboBox, containing all images for icons, there, at least that's what I can think of, should be a way to get only the name of the chosen ImageIcon- image path.
The buttons properties are stored in a properties file and that's where I intend to store the .png images names if I can get to them. The idea is to set the image name and when the button is loaded to the screen to look for and load only the image it's supposed to.
Here is a snipet of the button class now; The images are way more, but for demo purposes, I think those are enough. I'd be very grateful if anyone can help with this matter.
public class CustomButton extends JButton {
static Properties FieldProp;
public CustomButton (String text, String name) {
FieldProp = new LoadProperties().loadMainProp();
this.setText(text);
this.setName(name);
Image imgdel=null;
Image imgsmbl=null;
Image imgsmrd=null;
Image imgsmgr=null;
Image imgadd=null;
Image imgauto=null;
Image imgauto1=null;
Image imgavail=null;
Image imgbarc=null;
Image imgdb=null;
Image imgdoc=null;
Image imgexc=null;
Image imgexc1=null;
try {
imgdel = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/delete.png")));
imgsmbl = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/small_blue.png")));
imgsmrd = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/small_red.png")));
imgsmgr = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/small_green.png")));
imgadd = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/add_plus.png")));
imgauto = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/automation.png")));
imgauto1 = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/automation1.png")));
imgavail = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/available.png")));
imgbarc = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/barcode.png")));
imgdb = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/db.png")));
imgdoc = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/doc.png")));
imgexc = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/excel.png")));
imgexc1 = ImageIO.read(Objects.requireNonNull(getClass().getResource("/img/import.png")));
} catch (NullPointerException e) {
JOptionPane.showMessageDialog(null,e+"\n"+e.getMessage()+"\n"+ Arrays.toString(e.getStackTrace()),"",JOptionPane.ERROR_MESSAGE);
} catch (IOException e) {
JOptionPane.showMessageDialog(null,e+"\n"+e.getMessage()+"\n"+ Arrays.toString(e.getStackTrace()),"",JOptionPane.ERROR_MESSAGE);
}catch (Exception e) {
JOptionPane.showMessageDialog(null,e+"\n"+e.getMessage()+"\n"+ Arrays.toString(e.getStackTrace()),"",JOptionPane.ERROR_MESSAGE);
}
ImageIcon delIcon = new ImageIcon(imgdel);
ImageIcon blIcon = new ImageIcon(imgsmbl);
ImageIcon rdIcon = new ImageIcon(imgsmrd);
ImageIcon grIcon = new ImageIcon(imgsmgr);
ImageIcon addIcon = new ImageIcon(imgadd);
ImageIcon autoIcon = new ImageIcon(imgauto);
ImageIcon autoIcon1 = new ImageIcon(imgauto1);
ImageIcon availIcon = new ImageIcon(imgavail);
ImageIcon barcIcon = new ImageIcon(imgbarc);
ImageIcon dbIcon = new ImageIcon(imgdb);
ImageIcon docIcon = new ImageIcon(imgdoc);
ImageIcon excIcon = new ImageIcon(imgexc);
ImageIcon excIcon1 = new ImageIcon(imgexc1);
Object[] items =
{
noIcon,
delIcon,
blIcon,
rdIcon,
grIcon,
addIcon,
autoIcon,
autoIcon1,
availIcon,
barcIcon,
dbIcon,
docIcon,
excIcon,
excIcon1
};
try {
int iconPosition = Integer.parseInt(FieldProp.getProperty(this.getName() + "Icon"));
String iconProp = FieldProp.getProperty(this.getName() + "Icon");
if (!iconProp.equals("0")) {
this.setIcon((ImageIcon) items[iconPosition]);
}
}catch (Exception e){
e.printStackTrace();
}
try {
this.setEnabled((Boolean.parseBoolean(FieldProp.getProperty(this.getName() + "Enabled"))));
this.setFocusable((Boolean.parseBoolean(FieldProp.getProperty(this.getName() + "Focusable"))));
}catch(Exception e){}

Android LibVLC getBitmap from a TextureView

I am trying to retrieve a frame from a video that is playing back using LibVLC in android. For reference, this is how I am starting LibVLC. ffmpegSv is a TextureView
public void startMediaPlayer() {
ArrayList<String> options = new ArrayList<>();
options.add("--no-drop-late-frames");
options.add("--no-skip-frames");
options.add("-vvv");
options.add("--no-osd");
options.add("--rtsp-tcp");
options.add("--no-snapshot-preview");
options.add("--no-video-title");
options.add("--no-spu");
videoVlc = new LibVLC(getActivity(), options);
TextureView surfaceView = (TextureView) getActivity().findViewById(R.id.streamView);
newVideoMediaPlayer = new org.videolan.libvlc.MediaPlayer(videoVlc);
final IVLCVout vOut = newVideoMediaPlayer.getVLCVout();
vOut.setVideoSurface(ffmpegSv.getSurfaceTexture());
vOut.setWindowSize(ffmpegSv.getWidth(), ffmpegSv.getHeight());
vOut.attachViews();
Media videoMedia = new Media (videoVlc, Uri.parse("rtsp://1.1.1.1/abc.mov"));
newVideoMediaPlayer.setMedia(videoMedia);
newVideoMediaPlayer.play();
}
And this is how I am attempting to get the bitmap from it. I should note this method worked correctly when using the android MediaPlayer.
#Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
if (mStream != null) {
if (idx++ % 10 == 0) {
(new Runnable() {
#Override
public void run() {
FileOutputStream out = null;
Bitmap b = ffmpegSv.getBitmap(ffmpegSv.getWidth(), ffmpegSv.getHeight());
Bitmap bm = Bitmap.createScaledBitmap(b2, 640, 480, true);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 50, bos);
byte[] arr = bos.toByteArray();
mStream.onJpegFrame(arr, 0L);
b.recycle();
bm.recycle();
}
}).run();
idx = 0;
}
}
}
However, the image that is being produced has a sliver of the original image from the TextureView around the edge almost like a border, but the rest of the image is obscured by a black box.
The only thing I can think of is that VLC uses some sort of overlay for subtitles etc that when pulled out with getBitmap() is losing its transparency. However, I am not 100% sure this is the case. Is there a way to check if this is the case, or disable any sort of overlays that VLC could be adding?
EDIT : I have added a sample image to demonstrate the problem:
You can just make out the bottom, right and top of the background image and a clear rectangle over the top of it.

Bitmap b = ffmpegSv.getBitmap(ffmpegSv.getWidth(), ffmpegSv.getHeight());
Bitmap bm = Bitmap.createScaledBitmap(b2, 640, 480, true);
Aren't you scaling something else here?
What is b2?

How to copy an area from a canvas into an image

I am trying to copy an area around the mouse cursor from my Canvas into an Image using the gc.copyarea method. Afterwards I want to paint that image onto a composite which appears after the mouse has been pressed for 1 second.
Below is my code so far:
In the paintControl Method of my canvas I copy the area to an image:
img = new Image(display, 40, 40);
gc.copyArea(img, mousePosition.x-20, mousePosition.y-20);
In the paintControl Method of my Composite I paint that image:
if (img != null) {
gc.drawImage(img, 0, 0);
}
The problem I am having is that only a very small part of the area is actually copied and painted onto the composite. Of the 40x40 pixel area, only an area of 10x20 pixel area in the bottom left corner is visible in the composite.
Example:
The cursor is next to the top left corner of the compisite. Only a small part of the area around the cursor is painted onto the compisite
Question: How can I copy an area from my canvas and paint it onto another composite correctly? What did I do wrong in my Code?

With some trial and error I managed to get something working that supposedly comes close to what you want.
public class CopyArea {
public static void main( String[] args ) {
CopyArea copyArea = new CopyArea();
copyArea.create();
copyArea.run();
}
private Display display;
private Image sourceImage;
private Point canvasSize;
private Shell shell;
private Canvas source;
private Canvas destination;
private Point snippetOrigin;
private Image snippet;
CopyArea() {
display = new Display();
sourceImage = new Image( display, getClass().getResourceAsStream( "mona-lisa.jpeg" ) );
canvasSize = new Point( sourceImage.getBounds().width, sourceImage.getBounds().height );
shell = new Shell( display );
source = new Canvas( shell, SWT.NONE );
destination = new Canvas( shell, SWT.NONE );
}
void create() {
shell.setLayout( new RowLayout() );
source.setLayoutData( new RowData( canvasSize ) );
source.addPaintListener( new PaintListener() {
#Override
public void paintControl( PaintEvent event ) {
event.gc.drawImage( sourceImage, 0, 0 );
if( snippetOrigin != null ) {
snippet = new Image( display, 40, 40 );
event.gc.copyArea( snippet, snippetOrigin.x, snippetOrigin.y );
destination.redraw();
snippetOrigin = null;
}
}
} );
source.addMouseListener( new MouseAdapter() {
#Override
public void mouseDown( MouseEvent event ) {
snippetOrigin = new Point( event.x, event.y );
source.redraw();
}
} );
destination.setLayoutData( new RowData( canvasSize ) );
destination.addPaintListener( new PaintListener() {
#Override
public void paintControl( PaintEvent event ) {
event.gc.setBackground( display.getSystemColor( SWT.COLOR_WHITE ) );
event.gc.fillRectangle( event.gc.getClipping() );
if( snippet != null ) {
event.gc.drawImage( snippet, 0, 0 );
}
}
} );
}
void run() {
shell.pack();
shell.open();
while( !shell.isDisposed() ) {
if( !display.readAndDispatch() )
display.sleep();
}
display.dispose();
}
}
The sourceImage is just a placeholder for your drawing code. The source Canvas listens to mouse-down events and then draws a 40x40 snippet of its client are to the destination Canvas. Note that I used Canvas in both cases, but Canvas and Composite should also work.
Here is how it works: The mouse-listeners stores the mouse location into snippetOrigin and triggers a repaint of the source. The paint-listener of source takes a partial screen-shot of what it just has drawn if requested (snippetOrigin != null) and then forces destination to redrawitself. The paint-listener of destination simple draws the snippet image if there is any.
The code deos not yet correctly clip the copied image. If you press the mouse in the lower right corner of the source Canvas, some of the shell`s trimming will be copied as well.
For brevity, the code does not dispose of the snippet image before reusing it (and may have other leaks).
If you own the drawing code that paints your equivalent of the source Canvas, I would rather refactor it so that arbitrary portions can be drawn and then call the code with appropriate parameters to draw on the destination widget.

try this code, sample to get a copy of an canvas area and paste in an object
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
ctx.fillStyle = "red";
ctx.fillRect(10, 10, 50, 50);
function copy() {
var imgData = ctx.getImageData(10, 10, 50, 50);
ctx.putImageData(imgData, 10, 70);
}
in this case the copy was paste at the canvas destination as origin
try this reference
https://www.w3schools.com/tags/canvas_getimagedata.asp
and this it the API reference
https://developer.mozilla.org/es/docs/Web/API/CanvasRenderingContext2D/getImageData

Java SWT Image Resize Not Working

I am trying to resize a picture and save it however the picture I am saving is not resized.
Here is the code I am trying use.
if(CC_Files.fileExists(path)){
if(path.contains(".jpg") || path.contains(".png") || path.contains(".gif") ){
Image image = (Image) SWTResourceManager
.getImage(path);
ImageData imgData = image.getImageData();
imgData.scaledTo(150, 150);
ImageLoader imageLoader = new ImageLoader();
imageLoader.data = new ImageData[] {imgData};
imageLoader.save(Variables.getStrResources() + "\\Pics\\" + a.getHerd_id() + ".jpg",SWT.IMAGE_JPEG);
}
}

Your problem is that you do not read the JavaDoc where is wrriten
ImageData#scaledTo(int width, int height) - Returns a copy of the receiver which has been stretched or shrunk to the specified size.
So the solution is:
imgData = imgData.scaledTo(150, 150);
Documentation

Java SWT Image Resize is proper Working
ImageLoader class are used to load images from, and save images to, a file or stream
imageLoader.save(result, SWT.IMAGE_COPY)
FileDialog class allow the user to navigate the file system and select or enter a file name.
Button btnOpen = new Button(parent, SWT.NONE);
btnOpen.setBounds(200, 55, 68, 23);
btnOpen.addSelectionListener(new SelectionAdapter() {
#Override
public void widgetSelected(SelectionEvent e) {
FileDialog dialog = new FileDialog(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), SWT.OPEN);
String result = dialog.open();
if(result!=null)
{
Image image=SWTResourceManager.getImage(result);
//ImageData class are device-independent descriptions of images
ImageData imgData = image.getImageData();
imgData=imgData.scaledTo(200, 200);
ImageLoader imageLoader = new ImageLoader();
imageLoader.data = new ImageData[] {imgData};
imageLoader.save(result, SWT.IMAGE_COPY);
System.out.println("Width: "+imgData.width+".....Height: "+imgData.height);
lbl_image_text.setBounds(25,88,imgData.width+10,imgData.height+10);
lbl_image_text.setImage(SWTResourceManager.getImage(result));
}
}
});
btnOpen.setText("open");
CLabel lbl_image_text = new CLabel(parent, SWT.Resize);
Image size set to Label Dynamically
Button btnOpen = new Button(parent, SWT.NONE);
btnOpen.setBounds(200, 55, 68, 23);
btnOpen.addSelectionListener(new SelectionAdapter() {
#Override
public void widgetSelected(SelectionEvent e) {
FileDialog dialog = new FileDialog(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), SWT.OPEN);
String result = dialog.open();
if(result!=null)
{
Image image=SWTResourceManager.getImage(result);
//get Image width and height
lbl_image_text.setBounds(25,88,image.getBounds().width+10,image.getBounds().height+10);
lbl_image_text.setImage(SWTResourceManager.getImage(result));
}
}
});
btnOpen.setText("open");
CLabel lbl_image_text = new CLabel(parent, SWT.Resize);

Call this method from the SWT.addListener(SWT.Close, new CustomShellCloseListener()). Tha parameters required to pass are LabelImage(Do not Use Label.getImage() ,pass the direct path),label.getBounds.width ,label.getBounds.height
protected Image resize(Image imageFromSource, int width, int height) {
if(width>0 && height>0){
Image scaledImage = new Image(shellCCMPFMatrixBomCompare.getDisplay(), width, height);
GC gc = new GC(scaledImage); //Graphics Capabilities(GC instance) in SWT used to draw an Image, graphics, display
gc.setAntialias(SWT.ON); // Anti aliasing is used for making the low resolution image to redraw and make into a good resolution Image
gc.setInterpolation(SWT.HIGH); //Interpolation is based in the Graphics, it may not work properly in some systems
gc.drawImage(imageFromSource, 0, 0,
imageFromSource.getBounds().width, imageFromSource.getBounds().height,
0, 0, width, height);
/*drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight)
Copies a rectangular area from the source image into a (potentially different sized) rectangular area in the receiver.*/
gc.dispose();
return scaledImage;
}
else return imageFromSource;
}

why showing .GIF image increase memory continuously?

i am showing simple code sample. I showed an gif image in a Jlabel. When run the programme, TASK manager shows that memory is increasing continuously. Why it happens?
Edited:
try this code please... on show glass button, glass panel is shown with gif image and a hide glass button in it and with that memory will be started increasing. On clicking hide glass button, glass panel will be hidden and memory increasing will b stopped.
#mKorbel : I had debugged it, the constructor will be called once, so no re-initializing of JFrame and also included : setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
public class circle extends JFrame {
public ImageIcon pic;
final JPanel glass;
public JButton glass_show;
public JButton hide_glass;
public circle() {
super("Hi shamansdsdsd");
setSize(500, 300);
// Image icon initialize once :
pic = new ImageIcon("images/loadinag.gif");
glass_show = new JButton("Show Glass panel");
this.add(glass_show);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
glass = (JPanel) this.getGlassPane();
hide_glass = new JButton("Hide Glass panel");
glass.add(hide_glass);
glass.add(new JLabel(pic));
glass.setOpaque(false);
}
public void initialize_listeners(){
glass_show.addActionListener(new ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent A) {
glass.setVisible(true);
}
});
hide_glass.addActionListener(new ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent A) {
glass.setVisible(false);
}
});
}
public static void main(String[] args) {
circle mFrame = new circle();
mFrame.initialize_listeners();
mFrame.setVisible(true);
}
}

There is a bug in Java with animated GIF images. There is no memory increase with other images.
Edit;
Below example runs without memory leak; but you need Eclipse SWT library from Eclipse's site
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.ImageLoader;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Shell;
public class GIFExample {
static Display display;
static Shell shell;
static GC shellGC;
static Color shellBackground;
static ImageLoader loader;
static ImageData[] imageDataArray;
static Thread animateThread;
static Image image;
static final boolean useGIFBackground = false;
public static void main(String[] args) {
display = new Display();
shell = new Shell(display);
shell.setSize(300, 300);
shell.open();
shellGC = new GC(shell);
shellBackground = shell.getBackground();
FileDialog dialog = new FileDialog(shell);
dialog.setFilterExtensions(new String[] {"*.gif"});
String fileName = dialog.open();
if (fileName != null) {
loader = new ImageLoader();
try {
imageDataArray = loader.load(fileName);
if (imageDataArray.length > 1) {
animateThread = new Thread("Animation") {
#Override
public void run() {
/* Create an off-screen image to draw on, and fill it with the shell background. */
Image offScreenImage = new Image(display, loader.logicalScreenWidth, loader.logicalScreenHeight);
GC offScreenImageGC = new GC(offScreenImage);
offScreenImageGC.setBackground(shellBackground);
offScreenImageGC.fillRectangle(0, 0, loader.logicalScreenWidth, loader.logicalScreenHeight);
try {
/* Create the first image and draw it on the off-screen image. */
int imageDataIndex = 0;
ImageData imageData = imageDataArray[imageDataIndex];
if (image != null && !image.isDisposed()) image.dispose();
image = new Image(display, imageData);
offScreenImageGC.drawImage(
image,
0,
0,
imageData.width,
imageData.height,
imageData.x,
imageData.y,
imageData.width,
imageData.height);
/* Now loop through the images, creating and drawing each one
* on the off-screen image before drawing it on the shell. */
int repeatCount = loader.repeatCount;
while (loader.repeatCount == 0 || repeatCount > 0) {
switch (imageData.disposalMethod) {
case SWT.DM_FILL_BACKGROUND:
/* Fill with the background color before drawing. */
Color bgColor = null;
if (useGIFBackground && loader.backgroundPixel != -1) {
bgColor = new Color(display, imageData.palette.getRGB(loader.backgroundPixel));
}
offScreenImageGC.setBackground(bgColor != null ? bgColor : shellBackground);
offScreenImageGC.fillRectangle(imageData.x, imageData.y, imageData.width, imageData.height);
if (bgColor != null) bgColor.dispose();
break;
case SWT.DM_FILL_PREVIOUS:
/* Restore the previous image before drawing. */
offScreenImageGC.drawImage(
image,
0,
0,
imageData.width,
imageData.height,
imageData.x,
imageData.y,
imageData.width,
imageData.height);
break;
}
imageDataIndex = (imageDataIndex + 1) % imageDataArray.length;
imageData = imageDataArray[imageDataIndex];
image.dispose();
image = new Image(display, imageData);
offScreenImageGC.drawImage(
image,
0,
0,
imageData.width,
imageData.height,
imageData.x,
imageData.y,
imageData.width,
imageData.height);
/* Draw the off-screen image to the shell. */
shellGC.drawImage(offScreenImage, 0, 0);
/* Sleep for the specified delay time (adding commonly-used slow-down fudge factors). */
try {
int ms = imageData.delayTime * 10;
if (ms < 20) ms += 30;
if (ms < 30) ms += 10;
Thread.sleep(ms);
} catch (InterruptedException e) {
}
/* If we have just drawn the last image, decrement the repeat count and start again. */
if (imageDataIndex == imageDataArray.length - 1) repeatCount--;
}
} catch (SWTException ex) {
System.out.println("There was an error animating the GIF");
} finally {
if (offScreenImage != null && !offScreenImage.isDisposed()) offScreenImage.dispose();
if (offScreenImageGC != null && !offScreenImageGC.isDisposed()) offScreenImageGC.dispose();
if (image != null && !image.isDisposed()) image.dispose();
}
}
};
animateThread.setDaemon(true);
animateThread.start();
}
} catch (SWTException ex) {
System.out.println("There was an error loading the GIF");
}
}
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
display.dispose();
}
}
Code Source

there are two areas
1) you forgot to declare setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); then current JVM instance is still in (the Native OS) RAM, until PC restart or power-off
2) maybe you are create a new JFrame for every Images on the fly