Copying, pasting and displaying images
I am developing an application with dialogs that contain JTextFields, JTextAreas etc. to and from which I can cut, copy and paste text.
However, what I am trying to do is to place some kind of component on the dialog to which I can paste an image directly from the clipboard, and subsequently display this image within another component.
I have looked at the API but cannot see anything appropriate. Does anybody know how to do this?
Thanks,
Martin
I have developed an application that does that. I constructed it so that I could store images in a database as a blob field. Here are some relevant code portions (The action listener for the paste button). To copy string, just replace the imageFlavor with String flavor and have the string be displayed in a textpane or something:
IMPORTANT NOTE: Images can only be copied from the clipboard using java 1.4 or higher, because the imageFlavor is not defined in previous versions. Strings work though.
class cmdPasteActionListener implements ActionListener
public void actionPerformed (ActionEvent event)
Transferable clipboardContent = clipboard.getContents(this);
if ((clipboardContent != null) && (clipboardContent.isDataFlavorSupported(DataFlavor.imageFlavor)))
try
Image image = (Image) clipboardContent.getTransferData(DataFlavor.imageFlavor);
imagePanel.setImage(image);
catch (Exception e)
setStatusText(e.getMessage());
e.printStackTrace();
[\code]
Similar Messages
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OK I'll bite.
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What directions?
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How to decode a set of datas received from serial port and display image on a canvas based on CVI ?
Hi !
I have received a set of datas via rs232 and it contains picture messages. I have to decode the datas first and then display them on a canvas.
I have known several functions that may be used . Such as
int SetBitmapData (int bitmapID, int bytesPerRow, int pixelDepth, int colorTable[], unsigned char bits[], unsigned char mask[]);
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I wouldn't care success or failure,for I will only struggle ahead as long as I have been destined to the distance.
Attachments:
Decode and display image.zip 212 KBWell, things are getting a bit clearer now.
1. Your image is actually 240x240 pixel (not 320x240 as you told before). The size of image data is 57600 bytes which corresponds to that frmat (I was puzzled by such a data size compared with larger image dimensions!)
2. The image is a 8-bits-per-pixel one; this means that you must provide a color palette to create the bitmap
3. You cannot simply copy image data into bitmap fields in CVI: CreateBitmap always produce an image with pixeldepth matched with display colour depth (normally 24 or 32 bpp)
All that means that you must:
1. Create the appropriate color palette with 256 colors: it may be a grayscale or color palette depending on camera characteristics. Grayscale palette can be found in my sample project, while sample colour palettes can be found here (here the description of a "standard" 8-bpp color palette)
2. Create the bits array correctly dimensioned for the color depth of your monitor
3. Get each pixel value from the camera, lookup in the color palette for the appropriate colour and create the RGB informations into the bits array in memory
4. Display the bitmap on the canvas
As a first step, I would configure my system for 256-color display setting, create a bitmap and simply copy image data into it: you should be able to get the correct image back to your screen.
Proud to use LW/CVI from 3.1 on.
My contributions to the Developer Zone Community
If I have helped you, why not giving me a kudos? -
Copy/paste and drag/drop not working in Mt. Lion
After two weeks of searching, I can not find the hangup which is causing my iMac 27" 10.8 to stop copy/paste and drag/drop following successfully doing the same shortly after startup. In Safe Mode, it doesn't happen, so I'm wondering how to track down this problem (extension?). I have to restart in order to get it functioning again after a short time of working. There has to be some kind of timing, like a program installed with a time limit which probably was forgotten in Lion and then reared its ugly head in Mt. Lion. Any suggestions for tracking this puppy? Or is there a program I could buy to do so?
Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac.
These steps are to be taken while booted in “normal” mode, not in safe mode. If you’re now running in safe mode, reboot as usual before continuing.
Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects.
Some of the commands will line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then either copy or drag it. The headings “Step 1” and so on are not part of the commands.
Note: If you have more than one user account, Step 2 must be taken as an administrator. Ordinarily that would be the user created automatically when you booted the system for the first time. The other steps should be taken as the user who has the problem, if different. Most personal Macs have only one user, and in that case this paragraph doesn’t apply.
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the page that opens.
When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign (“$”) or a percent sign (“%”). If you get the percent sign, enter “sh” and press return. You should then get a new line ending in a dollar sign.
Step 1
Copy or drag — do not type — the line below into the Terminal window, then press return:
kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}'
Post the lines of output (if any) that appear below what you just entered (the text, please, not a screenshot.) You can omit the final line ending in “$”.
Step 2
Repeat with this line:
sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix)|edu\.mit|org\.(amavis|apache|cups|isc|ntp|postfix|x)/{print $3}'
This time, you'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up. You don't need to post the warning.
Note: If you don’t have a login password, you’ll need to set one before taking this step. If that’s not possible, skip to the next step.
Step 3
launchctl list | sed 1d | awk '!/0x|com\.apple|edu\.mit|org\.(x|openbsd)/{print $3}'
Step 4
ls -1A /e*/mach* {,/}L*/{Ad,Compon,Ex,Fram,In,Keyb,La,Mail/Bu,P*P,Priv,Qu,Scripti,Servi,Spo,Sta}* L*/Fonts 2> /dev/null
Important: If you formerly synchronized with a MobileMe account, your me.com email address may appear in the output of the above command. If so, anonymize it before posting.
Step 5
osascript -e 'tell application "System Events" to get name of every login item' 2> /dev/null
Remember, steps 1-5 are all drag-and-drop or copy-and-paste, whichever you prefer — no typing, except your password. Also remember to post the output.
You can then quit Terminal. -
office365 macbook air while copy paste and change font to tahoma forarded message remain with different fonts and size not accepting change
mac yosemite
office365Also here's the log before it happened. As you can see there is no activity from 9:48 to 10:00 am when the sound occurred.
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*http://kb.mozillazine.org/Toolbar_customization
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import javax.swing.*;
import javax.swing.table.*;
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public static void main(String[] args)
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Container cp = getContentPane();
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Any way around these problems? (At least they're problems for
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I've been using FW since it was originally released, and I
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> Also, if I copy text
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Hello,
I need to develop the copy-paste functions for an image. But I really don't know how to do this.
I have an image, a rectangle selection on it, and I want to draw this selection on another window.
images can be 8 bits, RGB, any format.
the problem is not with paste but with copy. I don't how to get a new image, which is a part of the first image.
Thanks a lot for your answers
ZauzIn Photoshop yes, in Lightroom no...
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Open and display image in MVC layout
Hello!
I cant figure out how I shall do this in an MVC layout:
The program request user to open an image file that are then displayed in a JLabel
My setup at the moment resolve in a nullpointerexeption because it dont get any actual image file, but I dont understand what I have missed.
I can not post the whole code fo you to run because it is to big, so I post the part that are the most important. please have a look.
PicturePanel
//Import Java library
import javax.swing.*;
import java.awt.*;
public class PicturePanel extends JPanel {
//Variables
private ImageIcon picture;
//Method to get information of the selected file
PicturePanel (String fileName) {
picture = new ImageIcon (fileName); //Get the filename
int w = picture.getIconWidth(); //Get the image with
int h = picture.getIconHeight(); //Get the image height
//Set preferable size for the image (Use the properties for the selected image)
setPreferredSize(new Dimension(w, h));
setMinimumSize(new Dimension(w, h));
setMaximumSize(new Dimension(w, h));
//Method to draw the selected image
protected void paintComponent(Graphics g) {
super.paintComponent(g); //We invoke super in order to: Paint the background, do custom painting.
g.drawImage(picture.getImage(), 0, 0, this); //Draw the image at its natural state
}From my model:
//Local attributes
boolean check = false; //Used to see if a statement is true or not
PicturePanel pp;
JFileChooser fc;
int returnVal;
//newFile in File menu
public void newFile() {
//Open a file dialog in users home catalog
fc = new JFileChooser();
//In response to a button click:
returnVal = fc.showOpenDialog(pp);
System.out.println("You pressed new in file menu");
}From my controler:
//User press "New" in File menu
else if (user_action.equals("New")) {
//Call method in model class
model.newFile();
//Update changes
if (model.returnVal == JFileChooser.APPROVE_OPTION) {
System.out.println("Hello1");
File f = model.fc.getSelectedFile();
if (model.pp != null)
model.pp = new PicturePanel(f.getAbsolutePath());
System.out.println("Hello2");
//Display image (Here is line 83)
view.setImage_DisplayArea(model.pp);
System.out.println("Hello3");
}From my view:
//Sets the image to be displayed on the image_display area (Here is line 302)
public void setImage_DisplayArea(PicturePanel pp) {
image_display.add(pp);
}The complet error:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at java.awt.Container.addImpl(Container.java:1015)You pressed new in file menu
Hello1
Hello2
at java.awt.Container.add(Container.java:351)
at View_Inlupp2.setImage_DisplayArea(View_Inlupp2.java:302)
at Control_Inlupp2.actionPerformed(Control_Inlupp2.java:83)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1882)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2202)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
at javax.swing.AbstractButton.doClick(AbstractButton.java:334)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1050)
at apple.laf.CUIAquaMenuItem.doClick(CUIAquaMenuItem.java:119)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1091)
at java.awt.Component.processMouseEvent(Component.java:5602)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3129)
at java.awt.Component.processEvent(Component.java:5367)
at java.awt.Container.processEvent(Container.java:2010)
at java.awt.Component.dispatchEventImpl(Component.java:4068)
at java.awt.Container.dispatchEventImpl(Container.java:2068)
at java.awt.Component.dispatchEvent(Component.java:3903)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4256)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3936)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3866)
at java.awt.Container.dispatchEventImpl(Container.java:2054)
at java.awt.Window.dispatchEventImpl(Window.java:1801)
at java.awt.Component.dispatchEvent(Component.java:3903)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)Edited by: onslow77 on Dec 16, 2009 5:00 PM
Edited by: onslow77 on Dec 16, 2009 5:04 PMHello again!
Anyone that can help me figure out how to implement this in an MVC layout, I feel stuck.
I post a little program that open and display an image file so that you better can understand what I whant to do.
ShowImage
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.File;
import javax.swing.filechooser.*;
public class ShowImage extends JFrame{
//Variables
JFileChooser fc = new JFileChooser();
PicturePanel pp = null;
ShowImage () {
super("Show"); //Title
//Create the GUI
JPanel top = new JPanel();
add(top, BorderLayout.NORTH);
JButton openBtn = new JButton("Open");
top.add(openBtn);
openBtn.addActionListener(new Listner());
//Settings for the GUI
setDefaultCloseOperation(EXIT_ON_CLOSE);
pack();
setVisible(true);
class Listner implements ActionListener {
public void actionPerformed(ActionEvent ave) {
int answer = fc.showOpenDialog(ShowImage.this);
if (answer == JFileChooser.APPROVE_OPTION){
File f = fc.getSelectedFile();
//Check
System.out.println(f);
System.out.println(pp);
if (pp != null)
remove(pp); //Clean so that we can open another image
//Check
System.out.println(pp);
//Set the PicturePanel
pp = new PicturePanel(f.getAbsolutePath());
//Check
System.out.println(pp);
//Add PicturePanel to frame
add(pp, BorderLayout.CENTER);
validate();
pack();
repaint();
//Main
public static void main(String[] args) {
new ShowImage();
}PicturePanel
//Import Java library
import javax.swing.*;
import java.awt.*;
public class PicturePanel extends JPanel {
//Variables
private ImageIcon picture;
//Method to get information of the selected file
PicturePanel (String fileName) {
picture = new ImageIcon (fileName); //Get the filename
int w = picture.getIconWidth(); //Get the image with
int h = picture.getIconHeight(); //Get the image height
//Set preferable size for the image (Use the properties for the selected image)
setPreferredSize(new Dimension(w, h));
setMinimumSize(new Dimension(w, h));
setMaximumSize(new Dimension(w, h));
//Method to draw the selected image
protected void paintComponent(Graphics g) {
super.paintComponent(g); //We invoke super in order to: Paint the background, do custom painting.
g.drawImage(picture.getImage(), 0, 0, this); //Draw the image at its natural state
}//The endEdited by: onslow77 on Dec 16, 2009 7:30 PM -
I have tried to look for an extension like Air Print Activator, which I tried and ignored. I thought it might have some timing method that would stop my copying and pasting and moving files after a minutes ot two. So I re-installed the latest version and "uninstalled" it, hoping it would then remove an errant extension. But that didn't help. It seemed to start when I first tried out Mail and moving new emails into their mailboxes after reading. I tried to figure out how to do a Clean Install, too, but it would not allow me to "move" the InstallESD.dmg to a USB disk, "resource busy". Everyway I turn, I'm blocked from carrying out a method of finding the culprit, short of starting from scratch -- but losing years and years of mail, files, receipts, etc. It's just too much to sacrifice. I have no idea what to do next, since I have no idea what extension is causing it or how to isolate and destroy it. Any suggestion would be much appreciated.
You can try repairing the boot drive, Since you are running OS 10.6.8 you will need the OS DVD. Do you have it?
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I am trying to copy text from a word document and paste it into my web builder and it says that firefox does not support copy/paste from clipboard. Went to your site and it tells me to open the user.j file in my profile. This file does not exist and I am not real sure how to create that file so I can paste the fix from your site into it.
I went to that link and added to firefox add on but it still does not work. I went to the add on option button for this but it told me that my MYSIWG widget was disabled. Does this have something to do with it not working and if so how do you enable it.
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Efficiency of decoding and displaying image files?
BRIEF SUMMARY
My question is this: can Flash Player download JPG and GIF
files from a server and rapidly open/decode them, ready for
display, efficiently and
entirely 'in memory'?
Would Flex be a good choice of language for developing a RIA
that needs to continually download lots of JPG and GIF images
on-the-fly from the server and render them on the screen? I *don't*
want my application to thrash the hard disc.
BACKGROUND
I am designing a 'rich' web app, and I'm investigating
whether Flex is the right tool for the job.
Although Flash's animation features are an obvious selling
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server-side rendering. What I want to do is perhaps a little
unorthodox: I will be generating lots of GIF and JPG files on the
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application data, e.g. in XML format) to update different parts of
the on-screen document. In need this to happen very quickly (in
some cases, creating the effect of animation).
It happens that JPGs and 16-colour GIFs will be, by far, the
most efficient formats for streaming the images, because of the
nature of the application. I could of course send the images in
some proprietary format, geared for my application, but presumably
decoding the images would be slow as I would have to implement this
myself in ActionScript, and so I would be limited by the speed of
Flex 'bytecode'. (I realise Flash is a lot more optimised than it
once was, but I am hoping to see a gain from using image formats
that Flash natively understands!)
Naturally the internet bandwidth should (in principle) be the
bottleneck. However, assuming I can get my image files to the
client on time, want I want to know is:
how efficient is Flash at loading such files?
Bearing in mind that I'm not just displaying the occasional
image -- I will be doing this continuously. Most of the images
won't be huge, but there will be several separate images per
second.
The image files will be a mixture of normal colour JPGs and
4-bit colour GIFs (LZW-compressed). I know that Flash natively
supports these formats, but depending on how Adobe have implemented
their LZW/Huffman decoding and so on, and how much overhead there
is in opening/processing downloaded image files before they are
ready to 'blit' to the screen, I imagine this could be pretty fast
or pretty slow!
If my client only has a modest PC, I don't want the JPG/GIF
decoding alone to be thrashing his CPU (or indeed the disc) before
I've even got started on 'Flashy' vector stuff.
I'm new to Flash, so are there any 'gotchas' I need to know
about?
E.g. Would it be fair to assume Flash Player will do the
decoding of the downloaded image entirely 'in memory' without
trying to do anything clever like caching the file to disc, or
calling any libraries which might slow down the whole process? It
would be no good at all if the images were first written to the
client's hard disc before being ready to display, for example.
Further, if I'm doing something a little out-of-the-ordinary,
and there is no 'guarantee' that images will be loaded quickly,
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Player may (for example) suddenly start doing some disc access in
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just 'try it and see', what I really need is some assurance that
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future.
Finally, I imagine JPG/GIF decoding could be something that
would vary from platform to platform (e.g. for the sake of
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Why can't i Cut items and paste them? I have to copy Paste and delete them?
Why can't i cut items (ctl + x) on my Macbook air? I always have to copy item from original location to location where i want to paste and del
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Hi Greetings. I am working on setting up trading partners at a customer place using BPEL and B2B. BPEL is 10.1.3 and B2B is 10.1.2. The previous BPEL developers developed some processes and deployed them to Development environment. B2B is also set up
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TS1347 Outlook agenda items are not synced on iphone
I am syncing my iphone with MS outlook via Itunes. But since the last month or so I do not see my agenda items on the iphone. Older items I still see. What is the problem?
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There is no iView available for system "SAP_ERP_HumanResources": object "em
Hi Experts, I have a search process iView . When I press on any process and press the detail button .. I get a popup screen which shows detail of the process. On the detail screen - there is collumn called Form Steps which shows all the steps in the
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I have two Air-Bridges 1.8 miles which when the two bridges was lined up and these are the best values obtained after several tests Values are: BR-1410A (root) BR-1410A (non-root) -58 dbi -60dbi 54 M
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Just got back my iMac with a brand new replacement hard drive through the iMac 1 TB Seagate Hard Drive Replacement Program. With only apps installed, no files and fonts added, the hard drive already shows permission problems. Is that normal? The repl