My GridLayout in Java behaving diffrently like I expected.
I want to have multiple Boxes within an JScrollPane (like in the screenshot below).
But when i have to less entries (for example 2) the height of the boxes are 100% height.
Does someone can tell me what i made wrong in my code?
ResultSet result = MysqlDataReader.ReadFromDataBase("DUMMY",connectionStrato);
innerPanel.removeAll();
innerPanel.setLayout(new GridLayout(Integer.parseInt(Math.round(result.getRow() / 3) + ""), 6, 2, 2));
while(result.next()){
URL url;
Image image;
try{
url = new URL("DUMMY" + result.getString(1) + ".jpg");
image = ImageIO.read(url.openStream());
} catch (MalformatedURLException ex) {
url = new URL("DUMMY");
image = ImageIO.read(url.openStream());
Logger.getLogger(ItemforList.class.getName()).log(Level.SEVERE, null, ex);
} catch(IOException ex){
url = new URL("DUMMY);
image = ImageIO.read(url.openStream());
Logger.getLogger(ItemforList.class.getName()).log(Level.SEVERE, null, ex);
}
ItemforList item = new ItemforList("DUMMY"+result.getString(1)+".jpg", result.getString(1)+"");
innerPanel.add(item)
}
scrollPaneL.setViewportView(innerPanel);
Component[] components = innerPanel.getComponents();
for (Component component : components){
if(component.getClass().equals(ItemforList.class)){
ItemforList item = (ItemforList) component;
System.out.printLn("TEST");
item.SetResizedIcon();
}
}
You didn't post any code so I can't comment on or directly fix that.
But to answer your question, the way to fix your problem is to fill in the extra grid boxes with dummy components - something just to take up that space
Related
I am creating a GUI that will allow the user to input Lake information for the state of Florida and then has the ability to display that lake information. I want the display information to be in a JOptionPane.showMessageDialog that has the ability to scroll through the ArrayList of all the lake names. I am able to add the lakes into the ArrayList but they will not display in my JOptionPane and it is blank. I know it is reading something in the ArrayList since it is opening that window. Here is the code below in snippets as the whole thing would be cra.
public static ArrayList<Lakes> lake = new ArrayList<Lakes>();
private JTextArea textAreaDisplay;
private JScrollPane spDisplay;
// this is called in my initComponent method to create both
textAreaDisplay = new JTextArea();
for (Object obj : lake)
{
textAreaDisplay.append(obj.toString() + " ");
}
spDisplay = new JScrollPane(textAreaDisplay);
textAreaDisplay.setLineWrap(true);
textAreaDisplay.setWrapStyleWord(true);
spDisplay.setPreferredSize(new Dimension(500, 500));
// this is called in my createEvents method. After creating lakes in the database
// it will display the else statement but it is empty
btnDisplayLake.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try
{
if (lake.size() == 0)
{
JOptionPane.showMessageDialog(null, "No Lakes in database!");
}
else
JOptionPane.showMessageDialog(null, spDisplay, "Display Lakes", JOptionPane.YES_NO_OPTION);
}
catch (Exception e1)
{
}
}
});
Thank you for any help you can provide. I have been racking my brain for a few days on this. Been able to get other stuff accomplished but coming back to this issue.
Some obvious issues:
textAreaDisplay = new JTextArea();
A JTextArea should be created with code like:
textAreaDisplay = new JTextArea(5, 20);
By specifying the row/column the text area will be able to calculate its own preferred size. Scrollbars should appear when the preferred size of the text area is greater than the size of the scroll pane.
spDisplay.setPreferredSize(new Dimension(500, 500));
Don't use setPreferredSize(). The scroll area will calculate its preferred size based on the preferred size of the text area.
textAreaDisplay.append(obj.toString() + " ");
I would think you want each Lake to show on a different line, so I would append "\n" instead of the space.
I was setting textAreaDisplay before anything was entered into the ArrayList and it would not run again after anything was entered. I moved the for loop down and into the actionPerformed event and works well now.
btnDisplayLake.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try
{
for (Object obj : lake)
{
textAreaDisplay.append(obj.toString() + "\n");
}
if (lake.size() == 0)
{
JOptionPane.showMessageDialog(null, "No Lakes in database!");
}
else
JOptionPane.showMessageDialog(null, spDisplay, "Display Lakes", JOptionPane.YES_NO_OPTION);
}
catch (Exception e1)
{
Using OnEndPage, I add a footer to my PDF created with iTextSharp. The footer font gets progressively bolder with each page.
How can I create consistent NORMAL fonts in my footer?
Here is my code:
public override void OnEndPage(PdfWriter writer, Document doc)
{
iTextSharp.text.Image gif = null;
if (FooterImage)
{
if (File.Exists(PathImages))
{
gif = iTextSharp.text.Image.GetInstance(PathImages);
gif.ScaleToFit(75f, 75f);
gif.SetAbsolutePosition(0, 0);
}
}
string sFooter = string.Empty;
if (FooterURL != null && FooterURL.Length > 0)
{
sFooter = FooterURL + " ";
}
if (FooterDate != null && FooterDate.Length > 0)
{
sFooter += FooterDate + " ";
}
if (FooterPage)
{
sFooter += "Page " + doc.PageNumber.ToString();
}
PdfPTable footerTbl = new PdfPTable(1);
footerTbl.TotalWidth = 900;
footerTbl.HorizontalAlignment = Element.ALIGN_CENTER;
Phrase ph = new Phrase(sFooter, FontFactory.GetFont(FontFactory.TIMES, 10, iTextSharp.text.Font.NORMAL));
PdfPCell cell = new PdfPCell(ph);
cell.Border = 0;
cell.PaddingLeft = 10;
footerTbl.AddCell(cell);
if (FooterImage)
{
PdfContentByte cbfoot = writer.DirectContent;
PdfTemplate tpl = cbfoot.CreateTemplate(gif.Width / 5, gif.Height / 5);
tpl.AddImage(gif);
cbfoot.AddTemplate(tpl, doc.PageSize.Width - 100, 10);
}
footerTbl.WriteSelectedRows(0, -1, 10, 30, writer.DirectContent);
}
In the old days, when there wasn't as much choice as today regarding fonts, people used workarounds to create bold fonts. One way to make a font bold, was by adding the same text over and over again at the same position. I think that this is happening to you.
When you use page events correctly, the onEndPage() method is triggered automatically each time a page ends. My guess is that you're doing something very wrong that triggers the onEndPage() many times. Maybe you are called the onEndPage() from your code, maybe you're adding the page event to the writer more than once (and page events are cumulative).
If I have to guess, I would guess that you are doing the latter. My guess is based on the fact that you are using variables such as FooterImage in your onEndPage() method. How are you setting that variable. If you are setting it in the constructor of the page event and you're adding the new page event over and over again to the writer, then you're doing it wrong.
This Code is in a While Loop, and each time I run a new Query it will go through this block after I have chosen what to filter it by, the problem is when I run it a second time and click on a cell in my table it will revert to cells in my previous table/query. I attached an image to show what I mean(I need 10 reputation for that so nevermind on the picture), I filtered the table by procsessState = -1 and when I clicked on some cells it reverted to what the previous table had. Help would be greatly appreciated. The program is around 1000 lines long and I did a terrible job of splitting it into different classes So I just posted where I am almost certain the issue arises.
I declared
final String columnNamesForTable[] = {"Error Message", "ID", "Locked By", "Message Id", "Process State",
"Row Date", "Sender", "Sent Date", "Subject" };
At The top, then I have this a bit later on.
else if (checkBoxCounter != 0)
{
DefaultTableModel tableModel = new DefaultTableModel(columnNamesForTable, 0);
tableModel.fireTableDataChanged();
try
{
Connection conn = DatabaseConnection.getConnection();
System.out.println("Connected");
PreparedStatement statement = conn.prepareStatement(sb.toString(),
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY,
ResultSet.HOLD_CURSORS_OVER_COMMIT);
// Change CONCUR_READ_ONLY to CONCUR_UPDATABLE
ResultSet resultSet = statement.executeQuery();
int errorMessageIndex = resultSet.findColumn("ErrorMessage");
int idIndex = resultSet.findColumn("Id");
int lockedByIndex = resultSet.findColumn("LockedBy");
int messageIdIndex = resultSet.findColumn("MessageId");
int processStateIndex = resultSet.findColumn("ProcessState");
int rowDateIndex = resultSet.findColumn("RowDate");
int senderIndex = resultSet.findColumn("Sender");
int sentDateIndex = resultSet.findColumn("SentDate");
int subjectIndex = resultSet.findColumn("Subject");
while (resultSet.next()) {
Object[] rowsForTable = { resultSet.getString(errorMessageIndex),
resultSet.getString(idIndex), resultSet.getString(lockedByIndex),
resultSet.getString(messageIdIndex), resultSet.getString(processStateIndex),
resultSet.getString(rowDateIndex), resultSet.getString(senderIndex),
resultSet.getString(sentDateIndex), resultSet.getString(subjectIndex)};
tableModel.addRow(rowsForTable);
}
resultSet.close();
statement.close();
conn.close();
filterFrame.setVisible(false);
JTable resultsTable = new JTable(tableModel);
JScrollPane pane = new JScrollPane(resultsTable);
displayPnl.add(pane);
pack();
resultsTable.repaint();
isDone= true;
} catch (SQLException ex) {
JOptionPane.showMessageDialog(null, "Database error");
ex.printStackTrace();
isDone = true;
} catch (ClassNotFoundException ex) {
JOptionPane.showMessageDialog(null, "Error loading database driver");
ex.printStackTrace();
isDone = true;
}
}
This Code is in a While Loop
Why would it be in a while loop. Swing is event driven. Code should only be executed when the uses generates some kind of event like clicking on a button, typing text, editing a cell.
I have chosen what to filter it by,
Don't create a whole new table and scroll pane. Just update the TableModel of the existing JTable.
pack();
Why would you pack the frame. The query could have 100's of rows of data. Pick a reasonable size for the table when the frame is created and there is no need to use pack() or repaint(). When you invoke the setModel(...) method of the JTable to replace the current model the table will be repainted automatically.
So all the code you need should be:
//filterFrame.setVisible(false);
//JTable resultsTable = new JTable(tableModel);
//JScrollPane pane = new JScrollPane(resultsTable);
//displayPnl.add(pane);
//pack();
//resultsTable.repaint();
existingTable.setModel( tableModel );
I cant comment I do not have enough reputation.
You fire tabledatachanged before changing data.
TableDataChanged does not always properly update rows , it seems better to fire update rows.
If your table is editable , if you clicked the table you need to release the editor.
Currently it looks so
What to do so that it looks so?
Below is my code:
JFrame f = new JFrame();
JTextPane textPane = new JTextPane();
JTextField component = new JTextField(" ");
component.setMaximumSize(component.getPreferredSize());
textPane.setSelectionStart(textPane.getDocument().getLength());
textPane.setSelectionEnd(textPane.getDocument().getLength());
textPane.insertComponent(component);
try {
textPane.getDocument().insertString(textPane.getDocument().getLength(), "text",
new SimpleAttributeSet());
} catch (BadLocationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
f.add(new JScrollPane(textPane));
f.setSize(200, 100);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
The single question which is near to this topic I found: JTextPane insert component, faulty vertical alignment
But there is no answer how to change the alignment. But it must be possible according to the discussion there.
You can use this http://java-sl.com/tip_center_vertically.html
It should work with JComponents as well.
You can also override LabelView's getPreferredSpan() adding some space to the bottom.
Alternatively you can try to override RowView inner class in ParagraphView
http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b14/javax/swing/text/ParagraphView.java#ParagraphView.Row
That points to inner class Row extends BoxView
You should replace it with own one. Try to override
public float getAlignment(int axis)
to return CENTER (0.5). If this does not help override layoutMinorAxis(0 to return proper offsets (shifted).
Define a style for your document with a JLabel and set the vertical aligment on it:
Style s = doc.addStyle("icUf", regular);
ImageIcon icUf = createImageIcon("uf.png", "Unidad Funcional");
if (icUf != null) {
JLabel jl = new JLabel(icUf);
jl.setVerticalAlignment(JLabel.CENTER);
StyleConstants.setComponent(s, jl);
}
Insert the label:
doc.insertString(doc.getLength(), " ", doc.getStyle("icUf"));
and the text:
doc.insertString(doc.getLength(), " text ", doc.getStyle("bold"));
Based on the answer above (which didn't work for me, but helped me find this), I used:
Style s = doc.addStyle("icUf", regular);
ImageIcon icUf = createImageIcon("uf.png", "Unidad Funcional");
if (icUf != null) {
// create label with icon AND text
JLabel jl = new JLabel("some text",icUf, SwingConstants.LEFT);
StyleConstants.setComponent(s, jl);
}
doc.insertString(doc.getLength(), " ", doc.getStyle("icUf"))
This properly aligned the text 'some text' and the icon.
I have the following method which creates a JTable then prints it out by its appearing as a rectangle no the page with the header and footer.
public void printModules(){
MessageFormat header = new MessageFormat("Modules " + new Date());
MessageFormat footer = new MessageFormat("Created by Assignments Database");
try {
JTable jtModules = new JTable(new ModulesTableModel(Controller.getInstance().getModules()));
jtModules.setShowHorizontalLines(true);
jtModules.setShowVerticalLines(true);
jtModules.setShowGrid(true);
boolean complete = jtModules.print(JTable.PrintMode.NORMAL, header, footer, true, null, false, null);
if(complete){
System.out.println("Printed");
} else{
System.out.println("Printing Cancelled");
}
} catch (PrinterException e) {
e.printStackTrace();
}
}
What else is wrong? There is data in the table as one that is created from the same data is showing in one of the panels.
In my abstract table model I have implemented the following methods:
Constructor
getRowCount
getColumnCount
getValueAt
getColumnNames
Is there any other methods that need to be created?
JTable has very reduced support for printing, there are some descriptions about printing in the tutorials about JTable (inc. code example) and Printing
You need to display the table in order to print it, so add it to a JFrame, then frame.setVisible(true); then frame.setVisible(false);
This will make it print.