How To Activate Scroll Bars On JScrollPane
Apr 21, 2015
I got an application with JScrollPanes; they seem to work fine, but fresh after the start, their scrollbars seem dead:I only begin to see their components after resizing the application window with the mouse.Clicking the scroll bars or their buttons (in Metal Look&Feel) does nothing.And there is no 'knob' visible.Dragging the side or bottom of the application window suddenly shows all and makes them operational.My ComponentListener on the window that contains the scrollpanes only does a repaint on the components inside the scrollpanes.Adding such to the code has no effect, neither does a repaint on the scrollpanes themselves.
View Replies
ADVERTISEMENT
Dec 24, 2014
I am building a java app and i am wanting to color the 6th 8th and 10th columns differently to make them stand out.
// It creates and displays the table
tableEng = new JTable(buildTableModel(rs));
for(int i=0;i < tableEng.getColumnCount();i++){
packColumn(tableEng,i,5);
[code]....
View Replies
View Related
May 5, 2014
I'm trying to get a timer to work to decrease the value of a stats bar (like Hunger Level, Energy Level), but it won't paint the bars in the first place, it won't let me start the timer (the start after t.start() is underlined) and now I'm getting an error that won't let me run it at all without putting public static void main (String [] args), even though adding it anywhere is causing other errors
public void hungerTimer () {
int delay = 300;
int period = 300;
interval = 100;
hungerBar.setValue(100);
hungerBar.repaint();
timer = new Timer();
[Code] .....
View Replies
View Related
Nov 12, 2014
So I'm trying to make a bar graph, each bar will increment the height by about 10 pixels. To do this, I'm making an array of bars. For some reason, using fillrect I cannot not increase the size more than 10 by 10, if I do, it will only show the 10 by 10. I want the bars to increase in height by 10 each time.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class AssortedAssortmentsOfSorts extends JFrame
[Code] .....
View Replies
View Related
Jul 16, 2014
I am working on a web application for store file maintenance. Need to add a new Check Box "Activate Selected Menu items" on the page.
what code i should write to add a Check Box.
View Replies
View Related
Mar 10, 2015
I have a frame showing some textfields and a couple of buttons, the classical "Ok" and "Reset" buttons, which are supposed to confirm the values of the textfields (closing the frame) and reset them respectively.
I think I thoroughly followed the "delegation method procedure" for managing event, that is , create the button object, define a listener class (implementing the ActionListener interface) , and add the listener class to the button using the "addActionListener" method . But there's no way to make the whole thing work.
No exception. Only when I click the button the "actionPerformed" method of the listener is simply ignored, as if it didn't exist.
Here is the code :
public FrameViewAddEstrazione (String ExtrPath) {
try
{
FilePath = ExtrPath;
F = new JFrame ();
PP = new JPanel();
PD = new JPanel(); // pannello data
[Code] ....
View Replies
View Related
Dec 8, 2014
I am working on a 3D-Projekt, but that's not the point. I wanted to call a function to turn the camera and want, that the function ist called while the key is pressed. I tried following:
private ActionListener actionListener = new ActionListener() {
public void onAction(String name, boolean pressed, float tpf)
if (name.equals("Camera Left") && pressed) {
setViewAngle(-1);
I think, I have to change the ActionListener "onAction", but I can't remember in which way. In the actual code the programm only once perform the action when the key is pressed.
I already tried :
while(pressed) {setViewAngle(-1)}
But that didn't work, but get the whole programm to halt.
So I thought of key repeating.
View Replies
View Related
Sep 30, 2014
I have a java swing application.
1. The human user of my application asks it to fire up a scanner which scans a paper document. The document is a filled in form.
2. The application then displays the scanned image to the human user.The image is displayed in a JScrollPane since it may be larger than the scroll pane.
3. The human user needs to locate a certain item in the form, for example a social security number, and enter it into a field in a data entry screen.Note that the image and the field appear on the same screen.
Of-course the social security number always appears in the same location in the image. Also the image needs to be the appropriate magnification and resolution to allow the human user to easily read and understand the item he is searching for in the image.
What is the best way to present the scanned image to the user such that he immediately sees the item he requires and can enter it into the data entry field.
View Replies
View Related
Apr 17, 2014
I'm having serious issues right now with a JTable inside a JScrollPane.i have some methods that returns different indexes (rows) that i select programatically in a JTable and the problem is that sometimes it goes beyond of what i can see, like, the row gets selected but the scrollbar won't follow up.
i've searched up in google and saw several different methods but those were extremely complex and for stuff i don't need.the simplest solution i found is this:
tInfo.setRowSelectionInterval(searchIndexes.get(currentIndex), searchIndexes.get(currentIndex));
tInfo.scrollRectToVisible(tInfo.getCellRect(currentIndex, 1, true));
but it just doesn't do anything.My table (tInfo) has only two columns so no horizontal bars, just vertical. What can i do to align the scrollbar with the currently selected row in my table? :C
Found a solution using scrollPane.getVerticalScrollBar().setValue();in another thread, i didn't even notice there were like 3 more threads about the same, just different kind of code used in each.
View Replies
View Related
Sep 6, 2014
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.sql.*;
class Stock extends JFrame implements ActionListener
[code]....
well everything seems to be working fine only the scroll pane is not working.
View Replies
View Related
Mar 8, 2014
I am using jsf with richfaces. Scroll bar inside panel grid is displayed. Need to disable / hide the bowser (IE-9) scroll bar.
style="overflow:hidden"
Added above style, but not working.
View Replies
View Related
Apr 27, 2015
I have tried to add a scroll bar line 28 - 31 and can't figure out why its not working. Its not even showing the scroll bar!
public class TheFrame extends JFrame {
private static ThePanel canvas;
private String deckImagesToUse;
/**
* The constructor creates a Frame ready to display the cards
*/
public TheFrame(String cardImgFile) {
[Code] .....
View Replies
View Related
Sep 5, 2014
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.sql.*;
class Stock extends JFrame implements ActionListener
[Code] ....
Everything is fine but the scroll pane is not working!
View Replies
View Related
Mar 31, 2015
I already done a lot of work(user lists, server logging, private messages), but im there is few thing i still dont know how to really implement and, of course my current program is far from beign decent, so i decided to start asking questions(so far i was just experimenting just using knowledge from book and some info found on Java API).
1. How can i make JTextField to scroll down each time new message received and log is already full? i mean visible part of it, so you don't need to scroll it yourself...
2. Why sequencer doesn't play MIDI if it is launched not by main thread?
3. What is good way to do user list with avatars? atm, i'm using regular JList and listening to selected values to open dialogs.
4. What is a good ways to implement sounds in application, other than MIDI? i know that i should just google it, but anyway.
You can check my source code for it by link. Chat client:URL...
View Replies
View Related
Mar 22, 2014
The program below compiles and functions correctly for the most part. It is supposed to be a simple GUI Text Editor with Edit and Format functions. The content pane is supposed to be a scroll pane, however no matter how much I type into the editor, the scroll bar does not appear. Also, the none of the functions under the "Edit" menu work.
Java Code:
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import java.util.StringTokenizer;
import java.util.regex.Pattern;
/**
* A simple text editor. It creates and displays the GUI Text Editor.
*/
public class TextEditor extends JFrame implements ActionListener
[Code] .....
View Replies
View Related
Sep 7, 2014
Mouse wheel is working properly on macosx but not working on windows.
Here is my layout structure, i implemented mousewheel listener but its not triggering tho.
And my scrolledcomposite declaration:
final ScrolledComposite scrolledComposite = new ScrolledComposite(mainComposite, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
scrolledComposite.setExpandHorizontal(true);
scrolledComposite.setExpandVertical(true);
scrolledComposite.setBackground(SWTResourceManager.getColor(SWT.COLOR_MAGENTA));
final Composite listComposite = new Composite(scrolledComposite, SWT.NONE);
GridLayout layout = new GridLayout();
[Code] ...
View Replies
View Related
May 29, 2014
I have a JFrame that houses a JScrollPane that houses a JTextArea (I set the console to output to the JTextArea). For some reason, when the frame appears, text is being printed like usual, but the scroll pane isn't rendered unless I hover over it or click on it. Also when I resize the frame, nothing appears unless I hover over it or click on it.
Code:
package voxel;
import java.awt.Dimension;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.util.logging.Logger;
[Code] ....
I've tried repainting the frame when everything is added to the frame and packed, but it doesn't change anything. I tried searching for other people who had the same problem, but most of them were relating to setting the layout to null (which I don't do) and using JPanels.
View Replies
View Related
Jan 16, 2015
As you can see in the above image. I have create One jFrame inside it their is one jPanel. Inside jPanel their are dynamic buttons whose range can change. (its like text box if you add more text scroll bar will appear)
I want to add jScrollBarr/jScollPane to jPanel so that when more than 6buttons will be their, I can scroll it down/up. So my question is how should I place jScollPane using this DRAG-DROP tool. When i clicked on jScrollPane and tried to put it inside jPanel I am unable to set it's position. It's my first time to add jScrollPane for jPanel inside jFrame.
View Replies
View Related
Aug 19, 2014
My program's tree:
JFrame{
JPanel(That MenuBar at the top)
JPanel(That panel at center with table){
JScrollPane{
JTable
}
}
}
I want to add my custom image to that grey space right there. I guess it is a JScrollPane, because I added that orange background on JPanel that contains it. But when I add this code to my custom class of JScrollPane:
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
if(background == null){
background = new ImageIcon(ClassLoader.getSystemResource("tableBg.png")).getImage();
}
g.drawImage(background, 0, 0, null);
}
The result is the same, no changes.
Then I read some documentation. I found this method:
scrollPane.getViewport().setBackground(Color c);
It works, but it accepts only color and I want to add image. Is there any way to do that? Do I need to subclass JViewport and use paintComponent ? If yes, then how to make getViewport() method return my custom subclassed version?
View Replies
View Related
Mar 12, 2014
I have a JScrollPane and JTable inside. In the right column of the table at the end (south) I made a ChartPanel in one of the classes where I make the design for the Frame:
Java Code:
ChartPanel chartpanel = new ChartPanel(pieChart);
pCapturing.add(chartpanel, BorderLayout.NORTH); mh_sh_highlight_all('java');
And when I click on any row above, from the list in the column, I would like an appropriate pie chart to be drawn.
I need here (in another class where I define the getTableCellRendererComponent) to enter a code to display the chart in the last row of the panel:
Java Code:
PieChart3 pie=sectionsChartProvider.getSectionPieChart(section);
...
...
if((hasFocus) || (isSelected)) {
if(column == 0)
setBorder( new MatteBorder(1, 1, 1, 0, colorBorder) );
[Code] .....
But, I don't know how to do this. I also have a class for drawing the pie chart.
View Replies
View Related
Mar 1, 2014
I am trying to create a JScrollPane with buttons in it, but I noticed that when I try to scroll, the items all move into ONE row at the top of the JScrollPane. How do I have them vertical? Is there something wrong with the way I am setting up the JScrollPane?
private static void addScrollPane() {
jScrollPane = new JScrollPane(new JPanel());
((JPanel)jScrollPane.getViewport().getView()).add(new JButton("First Button"));
[Code]....
View Replies
View Related
Mar 3, 2006
I have a JScrollPane with a JTextArea. The JTextArea is loaded with 10 lines of data. I have two JCheckBox's. The first check box sets the scroll to 10. sp.getVerticalScrollBar().setValue(10); The second check box reloads (ta.setText(text)) the text and then sets the scroll to 10. Why does the second one not work? I have attached a simple program. It is probably easier for you to compile and run than for me to go into detail explaining further.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Tester extends JFrame {
private static final String text = "1
[Code] ......
View Replies
View Related
Mar 3, 2014
When I add to a JScrollPane (I'm adding to a JPanel then putting that in the scroll pane) it displays as many items in one row as possible. How can I make it so that it only displays one per row?
View Replies
View Related
May 24, 2014
I have Implemented a user control / component that allows zooming in and out of a displayed BufferedImage, for discussion's sake, 3rd party libraries are excluded and everything must be from scratch.I have an image rendered on a JPanel, the JPanel is contained within a scrollbar.
Zooming inout etc works perfectly.The Scrollbars are rendered correctly on Zoom In and disappear when I zoom out.I want to add the functionality of focusing on a specific quarter of the displayed image via four dedicated buttons, each send an int (1-4) to a method, that controls the scrollbars.
public void zoomToQuarter(int i)
{
double width = (currentBufferedImage.getWidth()*2.2)+1;
double height = (currentBufferedImage.getHeight()*2.2)+1;
JScrollBar vertical = scrollPane.getVerticalScrollBar();
JScrollBar horizontal = scrollPane.getHorizontalScrollBar();
horizontal.setMaximum((int)width);
vertical.setMaximum((int)height);
[code]....
And resizes the image whilst scrolling the scrollbars accordingly,The method works as expected, and the scrollbars go to the desired location, But there's a catch:The first click on any of the above buttons does not work, but from the second click and on, everything works great!
View Replies
View Related
Jun 3, 2014
When a JTextArea is created in a JScrollPane and the contents of the JTextArea change, the JScrollPane's preferred size doesn't change.
In the following code, I create a JScrollPane and a JTextArea as a client. I then, add contents to the JTextArea and call revalidate() on it to let the JScrollPane re-update itself. However, it keeps reporting the same preferred size.
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
class c
{
static JScrollPane sp;
static JTextArea ta;
public static void main (String...args)
[Code] ....
View Replies
View Related
Dec 9, 2014
I'm writing a Java Swing program for my software development class to allow a user to create a map for a side scroller video game. I'm stuck on a particular part of my GUI where I'm trying to create a properties box for specific tiles. When I draw the components onto the JPanel and display it as it is, it shows two check boxes per row. On the ScrollPane however, all the check boxes go straight onto one line and draw out the scroll pane. Right now I am only concerned with just making the basic GUI.
Here is what I have so far:
Within the main class, I am creating the JFrame and adding components to it. I am attempting to create a JScrollPane which will hold the properties check boxes...
Here is the method where I am implementing the code. It works, but it doesn't display correctly.
private void createPropertiesBox() {
PropertiesBoxPanel pbp = new PropertiesBoxPanel();
propertiesBox = new JScrollPane(pbp);
propertiesBox.setViewportView(pbp);
frame.add(propertiesBox);
[Code] .....
I've been tinkering with this code for quite some time now and I cannot seem to make a breakthrough on how to fix this.
View Replies
View Related
