ScrollPane woes 2

Hi,
I try to
attach a ScrollPane to a TextField with some text, but I
have 2 bugs:
The scrollBar is shown inside Flash
testing movie environment, but not on the server, even when the
text is long enough for a scrollbar.
Even if there is no scrollbar, the
textField is cropped (by some scrollpane obscure behavior).
Thanks,
Tal

the 2 bugs I mentioned were cropped:
1. Within flash test movie, i see the ScrollBar that is
created by the ScrollPane just fine, but when I test this on the
server, there is no ScrollBar, even if the text is long.
2. Again, when I test this on the, the textField width is
cropped. no scrollbar.
Any idea what can cause this behavior?
Thanks, Tal

Similar Messages

More scrollPane woes

Alright, so I have a scrollPane that I am populating
dynamically at runtime with a list of CheckBoxes whose settings
come from an XML file.
This works fine when I test the movie locally.
For some reason, when I upload it and try to view it online,
most of the time it only loads 2 checkboxes. Only every once in a
while does it load all of the checkboxes.
For workflow, the swf is getting loaded into another swf via
the attachMovie command. It does the same thing when I test it
dynamically loading locally. Sometimes it works, other times it
loads 2 checkboxes.
You can see it in action here:
http://ritasangels.net - just go
to the "gallery" section.

OK. I win the dumb of the day award. I was just about to follow up on this and realised what I had done; I was setting a paragraph style for the text only slides and had changed the tag to Marquee, which is why it's scrolling, of course!
The only problem I have now, is the triggers are no longer active. Although they cycle across with in autoplay, they cannot be clicked.

Should I build my own component, or is there a solution to my built-in ScrollPane woes?

"I am desperate. I am going insane. Please, please help me."
That is how my last post ended. And no one replied, which I
suppose means that there is no solution to the problem I have with
the ScrollPane component in flash 8.
I just want to put both of the scroll arrows of the
ScrollPane's scroll bar together on the same end of the scroll
track, instead of at opposite ends of the track.
I have customized everything else about the ScrollPane with
HaloThemes and setStyle, etc, but cannot seem to re-position the
arrows.
So, I am wondering if I should just make my own scroll pane.
I have been cautioned against using too much actionscript in flash,
though, so I am wary. Anyone know of a reliable method for making a
scroll pane for images with scroll arrows that can be positioned
together?
Or should I stick it out with the built-in ScrollPane?

No, what you ask is not possible with the standard
components.
I don't understand why you would be cautioned against using
"too much actionscript" in Flash....
Everything I do is built entirely with AS these days. I even
draw out all of my elements at runtime, and this makes my
interfaces faster, both in loading and in processing. So there is
nothing wrong with using a ton of AS in Flash. However, if you do
not know AS very well, these things are fairly difficult to do.
If you do know AS fairly well, then go ahead and make your
own Scroll Pane. Best-case scenario, you make a component that fits
your needs, and is much smaller (file-size) than the ScrollPane.
The built-in components tend to be a bit bloated. Worst-case
scenario: Over too much time, you make something that is bigger
than the ScrollPane component, and pretty much does the job you
want, but is a bit buggy, and you have quite a few headaches on the
way.
Personally, I do not understand why Adobe hasn't given us the
ability to rearrange the arrows on the UIScrollBar, or even simply
turn the track off completely. These seem like simple things that
should be easy for Adobe to add. I really need to compile a list of
things to submit through the wish list page.
So, you can stick with the ScrollPane, have it easy and done,
but with a sub-ideal scrollbar. Or you can work at building your
own ScrollPane component. If you build your own, you may spend a
bit of time in development, but you will be able to get your
scroller to display the way you want.

Continual Mac woes (no question, just a rant)

It's Tuesday, and I am having terrible problems with my Mac. But then, why should Tuesday be different from any other day of the week.
Here is a typical day for me. The computer appears to be working OK. I need to watch a DVD for my work. I turn on DVD player, and put one in. The machine can't read the disc. It clicks and whirls, but the icon does not show up on the desktop. Meanwhile, so distressed is the machine that it freaks out. What was up until now was a fluidly operating machine suddenly reverts back to its old ways (i.e., its ways of two days ago). The hold ups and spinning pinwheels begin to eat of hours of my work day. (Remember the old days when computers made life easier?) The machine becomes sticky, gummy. Oh, I can move the curser and it seems to work for a second but then gets stuck in the dock, which explodes in icons and then freezes for five minutes. Yes. Five minutes.
Would love to use Force Quit, but the cursor is spinning, and nothing is responding. Funny about that old Mac. You can't force quit Force Quit. I guess I need to leave it open all the time.
Of course, FQ usually works on Safari. I have never just "quit" Safari. It always requires Force Quit, otherwise I can't turn off my computer. It stalls shut down.
Now I have a DVD trapped in there and can't get it out. [But I just got an answer from another posting.]
In the old macs, there used to be a pin hole you could stick a needle into ... can't find one on my flatpanel iMac.
I bought my Apple flat panel iMac in August of 2002. Yes, I know that that is a long time to have a computer, but I am not rich nor attached to a corporation that can splurge on computers. The first weekend I had the machine, I had three kernal panics.
Among the other problems I have documented are the following: the dock hiding itself unbidden and other features checking and unchecking themselves (Aug 2002); bus errors connected with OS 9 (Sept); some problems that inspired the tech person (Eric)) to talk me through deleting my user i.d., resulting in the loss of two months worth of e-mail (Thursday, 12 September); Preview problems (September); a bizarre box with an unmovable and undeletable red stop sign in it that no tech person or other Mac user I know had ever hear of (Monday 30 September); printing problems; computer won't shut down, numerous disconnection errors, which turned out to be caused by an OS X update (beginning December, 2002, or later); Kernel panics (Feb); computer won't shut down (March); Faxstexx problems, program won't allow me to set it up, finally just deleted the software (April); keys like "V" freeze and repeat endlessly (May 21); DVD Player freezes (May); Safari and Mail begin quitting unexpectedly (May); cursor begins to blink and fade out, plus odd sounds come out of the speakers, a constant error beeping (Sept 9); DVD Player problems (Oct 4).
I called AppleCare while I had it about once a week (the total between August 2002 and the time it ran out was about 155 calls). Naturally, some of these calls are motivated by user error. On the other hand, many of the issues I have called about were unprecedented as far as the Tech person was concerned, such as the blinking mouse, the red stop sign, and the DVD Player woes.
Things improved with Panther, but in Tiger many of the same old issues have returned.
I have been having so many problems with my Mac that I once wrote a letter to the company asking when do I qualify for a new replacement machine. I never received an answer, but I felt better for about a day. Then I turned on my Mac again.

The spinning ball of death as we used to call it is often caused by a lack of RAM, it is hard to be sure as I am not working on your machine, but sometimes things can be improved with additional RAM, it makes it seem like a whole new computer.
A lot of your problems sound like stuff that can be fixed easily enough, and although frustrating things happen here and there with updates. It sounds like you are in fairly good spirits with it all, I would suggest just researching a bit more into maintenance you can do to help maintain the computer and educate yourself a bit more (sounds like you already have learned quite a bit along the way) and you will find a lot of these issues take you a few seconds to rid yourself of. I would start by making sure you are repairing permissions regularly and running the most up to date software. If a lot of problems persist, try creating a second user that is a "test" user to see if the problem is replicated on that user (don't delete your other one, but if you do find the problem not on the other user, you might have a corrupt user, however you don't have to lose all your emails there are plenty of ways to back it up and import it in, or even just bring the entire Mail folder from your library over to the new user). Another thing you can do if you find a lot of system problems is archive and install the OS, it takes a bit of time, but doing it overnight shouldn't be an issue, and you won't lose any of your stuff.

Custom graphics in java.awt.ScrollPane

Hi all,
I have to draw a custom created image in a scroll pane. As the image is very large I want to display it in a scroll pane. As parts of the image may change within seconds, and drawing the whole image is very time consuming (several seconds) I want to draw only the part of the image that is currently visible to the user.
My idea: creating a new class that extends from java.awt.ScrollPane, overwrite the paint(Graphics) method and do the drawings inside. Unfortunately, it does not work. The background of the scoll pane is blue, but it does not show the red box (the current viewport is not shown in red).
Below please find the source code that I am using:
package graphics;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.ScrollPane;
import java.awt.event.AdjustmentEvent;
public class CMyComponent extends ScrollPane {
 /** Listener to force a component to repaint when a scroll bar changes its
 * position.
 private final class ScrollBarAdjustmentListener implements java.awt.event.AdjustmentListener {
 /** The component to force to repaint. */
 private final Component m_Target;
 /** Default constructor.
 * @param Target The component to force to repaint.
 private ScrollBarAdjustmentListener(Component Target) { m_Target = Target; }
 /** Forces to component to repaint upon adjustment of the scroll bar.
 * @see java.awt.event.AdjustmentListener#adjustmentValueChanged(java.awt.event.AdjustmentEvent)
 public void adjustmentValueChanged(AdjustmentEvent e) { m_Target.paint(m_Target.getGraphics()); }
 public CMyComponent() {
 // Ensure that the component repaints upon changing of the scroll bars
 ScrollBarAdjustmentListener sbal = new ScrollBarAdjustmentListener(this);
 getHAdjustable().addAdjustmentListener(sbal);
 getVAdjustable().addAdjustmentListener(sbal);
 public void paint(Graphics g) {
 setBackground(Color.BLUE);
 g.setColor(Color.RED);
 g.fillRect(getScrollPosition().x, getScrollPosition().y, getViewportSize().width, getViewportSize().height);
 public final static void main(String[] args) {
 java.awt.Frame f = new java.awt.Frame();
 f.add(new CMyComponent());
 f.pack();
 f.setVisible(true);
}

Dear all,
I used the last days and tried several things. I think now I have a quite good working solution (just one bug remains) and it is very performant. To give others a chance to see what I have done I post the source code of the main class (a canvas drawing and implementing scrolling) here. As soon as the sourceforge project is accepted, I will publish the whole sources at there. Enjoy. And if you have some idea for my last bug in getElementAtPixel(Point), then please tell me.
package internetrail.graphics.hexgrid;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Point;
import java.awt.Polygon;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import java.awt.geom.Area;
import java.awt.image.BufferedImage;
import java.util.WeakHashMap;
import java.util.Map;
/** Hex grid view.
* Visualizes a {@link IHexGridModel}.
* @version 0.1, 03.06.2006
* @author Bjoern Wuest, Germany
public final class CHexGridView extends Canvas implements ComponentListener, IHexGridElementListener {
 /** Serial version unique identifier. */
 private static final long serialVersionUID = -965902826101261530L;
 /** Instance-constant parameter for the width of a hex grid element. */
 public final int CONST_Width;
 /** Instance-constant parameter for 1/4 of the width of a hex grid element. */
 public final int CONST_Width1fourth;
 /** Instance-constant parameter for 3/4 of the width of a hex grid element. */
 public final int CONST_Width3fourth;
 /** Instance-constant parameter for 1.5 times of the width of a hex grid element. */
 public final int CONST_Width1dot5;
 /** Instance-constant parameter for 4 times of the width of a hex grid element. */
 public final int CONST_Widthquad;
 /** Instance-constant parameter for the height of a hex grid element. */
 public final int CONST_Height;
 /** Instance-constant parameter for 1/2 of the height of a hex grid element. */
 public final int CONST_Heighthalf;
 /** Instance-constant parameter for the double height of a hex grid element. */
 public final int CONST_Heightdouble;
 /** The steepness of a side of the hex grid element (calculated for the upper left arc). */
 public final double CONST_Steepness;
 /** The model of this hex grid */
 private final IHexGridModel m_Model;
 /** A cache for already created images of the hex map. */
 private final Map<Point, Image> m_Cache = new WeakHashMap<Point, Image>();
 /** The graphical area to draw the selection ring around a hex element. */
 private final Area m_SelectionRing;
 /** The image of the selection ring around a hex element. */
 private final BufferedImage m_SelectionRingImage;
 /** The current position of the hex grid in pixels (top left visible corner). */
 private Point m_ScrollPosition = new Point(0, 0);
 /** Flag to define if a grid is shown ({@code true}) or not ({@code false}). */
 private boolean m_ShowGrid = true;
 /** Flag to define if the selected hex grid element should be highlighted ({@code true}) or not ({@code false}). */
 private boolean m_ShowSelected = true;
 /** The offset of hex grid elements shown on the screen, measured in hex grid elements. */
 private Point m_CurrentOffset = new Point(0, 0);
 /** The offset of the image shown on the screen, measured in pixels. */
 private Point m_PixelOffset = new Point(0, 0);
 /** The index of the currently selected hex grid element. */
 private Point m_CurrentSelected = new Point(0, 0);
 /** The width of a buffered pre-calculated image in pixel. */
 private int m_ImageWidth;
 /** The height of a buffered pre-calculated image in pixel. */
 private int m_ImageHeight;
 /** The maximum number of columns of hex grid elements to be shown at once on the screen. */
 private int m_MaxColumn;
 /** The maximum number of rows of hex grid elements to be shown at once on the screen. */
 private int m_MaxRow;
 /** Create a new hex grid view.
 * The hex grid view is bound to a {@link IHexGridModel} and registers at
 * that model to listen for {@link IHexGridElement} updates.
 * @param Model The model backing this view.
 public CHexGridView(IHexGridModel Model) {
 // Set the model
 m_Model = Model;
 CONST_Width = m_Model.getElementsWidth();
 CONST_Height = m_Model.getElementsHeight();
 CONST_Width1fourth = CONST_Width/4;
 CONST_Width3fourth = CONST_Width*3/4;
 CONST_Width1dot5 = CONST_Width*3/2;
 CONST_Heighthalf = CONST_Height/2;
 CONST_Widthquad = CONST_Width*4;
 CONST_Heightdouble = CONST_Height*2;
 CONST_Steepness = (double)CONST_Heighthalf / CONST_Width1fourth;
 m_ImageWidth = getSize().width+CONST_Widthquad;
 m_ImageHeight = getSize().height+CONST_Heightdouble;
 m_MaxColumn = m_ImageWidth / CONST_Width3fourth;
 m_MaxRow = m_ImageHeight / CONST_Height;
 // Register this canvas for various notifications
 m_Model.addElementListener(this);
 addComponentListener(this);
 // Create the selection ring to highlight hex grid elements
 m_SelectionRing = new Area(new Polygon(new int[]{-1, CONST_Width1fourth-1, CONST_Width3fourth+1, CONST_Width+1, CONST_Width3fourth+1, CONST_Width1fourth-1}, new int[]{CONST_Heighthalf, -1, -1, CONST_Heighthalf, CONST_Height+1, CONST_Height+1}, 6));
 m_SelectionRing.subtract(new Area(new Polygon(new int[]{2, CONST_Width1fourth+2, CONST_Width3fourth-2, CONST_Width-2, CONST_Width3fourth-2, CONST_Width1fourth+2}, new int[]{CONST_Heighthalf, 2, 2, CONST_Heighthalf, CONST_Height-2, CONST_Height-2}, 6)));
 m_SelectionRingImage = new BufferedImage(CONST_Width, CONST_Height, BufferedImage.TYPE_INT_ARGB);
 Graphics2D g = m_SelectionRingImage.createGraphics();
 g.setColor(Color.WHITE);
 g.fill(m_SelectionRing);
 @Override public synchronized void paint(Graphics g2) {
 // Caculate the offset of indexes to show
 int offsetX = 2 * (m_ScrollPosition.x / CONST_Width1dot5) - 2;
 int offsetY = (int)(Math.ceil(m_ScrollPosition.y / CONST_Height) - 1);
 m_CurrentOffset = new Point(offsetX, offsetY);
 // Check if the image is in the cache
 Image drawing = m_Cache.get(m_CurrentOffset);
 if (drawing == null) {
 // The image is not cached, so draw it
 drawing = new BufferedImage(m_ImageWidth, m_ImageHeight, BufferedImage.TYPE_INT_ARGB);
 Graphics2D g = ((BufferedImage)drawing).createGraphics();
 // Draw background
 g.setColor(Color.BLACK);
 g.fillRect(0, 0, m_ImageWidth, m_ImageHeight);
 // Draw the hex grid
 for (int column = 0; column <= m_MaxColumn; column += 2) {
 for (int row = 0; row <= m_MaxRow; row++) {
 // Draw even column
 IHexGridElement element = m_Model.getElementAt(offsetX + column, offsetY + row);
 if (element != null) { g.drawImage(element.getImage(m_ShowGrid), (int)(column*(CONST_Width3fourth-0.5)), CONST_Height*row, null); }
 // Draw odd column
 element = m_Model.getElementAt(offsetX + column+1, offsetY + row);
 if (element!= null) { g.drawImage(element.getImage(m_ShowGrid), (int)(column*(CONST_Width3fourth-0.5)+CONST_Width3fourth), CONST_Heighthalf*(row*2+1), null); }
 // Put the image into the cache
 m_Cache.put(m_CurrentOffset, drawing);
 // Calculate the position of the image to show
 offsetX = CONST_Width1dot5 + (m_ScrollPosition.x % CONST_Width1dot5);
 offsetY = CONST_Height + (m_ScrollPosition.y % CONST_Height);
 m_PixelOffset = new Point(offsetX, offsetY);
 g2.drawImage(drawing, -offsetX, -offsetY, null);
 // If the selected element should he highlighted, then do so
 if (m_ShowSelected) {
 // Check if the selected element is on screen
 if (isElementOnScreen(m_CurrentSelected)) {
 // Correct vertical offset for odd columns
 if ((m_CurrentSelected.x % 2 == 1)) { offsetY -= CONST_Heighthalf; }
 // Draw the selection circle
 g2.drawImage(m_SelectionRingImage, (m_CurrentSelected.x - m_CurrentOffset.x) * CONST_Width3fourth - offsetX - ((m_CurrentSelected.x + 1) / 2), (m_CurrentSelected.y - m_CurrentOffset.y) * CONST_Height - offsetY, null);
 @Override public synchronized void update(Graphics g) { paint(g); }
 public synchronized void componentResized(ComponentEvent e) {
 // Upon resizing of the component, adjust several pre-calculated values
 m_ImageWidth = getSize().width+CONST_Widthquad;
 m_ImageHeight = getSize().height+CONST_Heightdouble;
 m_MaxColumn = m_ImageWidth / CONST_Width3fourth;
 m_MaxRow = m_ImageHeight / CONST_Height;
 // And flush the cache
 m_Cache.clear();
 public void componentMoved(ComponentEvent e) { /* do nothing */ }
 public void componentShown(ComponentEvent e) { /* do nothing */ }
 public void componentHidden(ComponentEvent e) { /* do nothing */ }
 public synchronized void elementUpdated(IHexGridElement Element) {
 // Clear cache where the element may be contained at
 for (Point p : m_Cache.keySet()) { if (isElementInScope(Element.getIndex(), p, new Point(p.x + m_MaxColumn, p.y + m_MaxRow))) { m_Cache.remove(p); } }
 // Update the currently shown image if the update element is shown, too
 if (isElementOnScreen(Element.getIndex())) { repaint(); }
 /** Returns the model visualized by this grid view.
 * @return The model visualized by this grid view.
 public IHexGridModel getModel() { return m_Model; }
 /** Returns the current selected hex grid element.
 * @return The current selected hex grid element.
 public IHexGridElement getSelected() { return m_Model.getElementAt(m_CurrentSelected.x, m_CurrentSelected.y); }
 /** Sets the current selected hex grid element by its index.
 * If the selected hex grid element should be highlighted and is currently
 * shown on the screen, then this method will {@link #repaint() redraw} this
 * component automatically.
 * @param Index The index of the hex grid element to become the selected one.
 * @throws IllegalArgumentException If the index refers to a non-existing hex
 * grid element.
 public synchronized void setSelected(Point Index) throws IllegalArgumentException {
 // Check that the index is valid
 if ((Index.x < 0) || (Index.y < 0) || (Index.x > m_Model.getXElements()) || (Index.y > m_Model.getYElements())) { throw new IllegalArgumentException("There is no hex grid element with such index."); }
 m_CurrentSelected = Index;
 // If the element is on screen and should be highlighted, then repaint
 if (m_ShowSelected && isElementOnScreen(m_CurrentSelected)) { repaint(); }
 /** Moves the visible elements to the left by the number of pixels.
 * To move the visible elements to the left by one hex grid element, pass
 * {@link #CONST_Width3fourth} as the parameter. The component will
 * automatically {@link #repaint()}.
 * @param Pixels The number of pixels to move to the left.
 * @return The number of pixels moved to the left. This is always between 0
 * and {@code abs(Pixels)}.
 public synchronized int moveLeft(int Pixels) {
 int delta = m_ScrollPosition.x - Math.max(0, m_ScrollPosition.x - Math.max(0, Pixels));
 if (delta != 0) {
 m_ScrollPosition.x -= delta;
 repaint();
 return delta;
 /** Moves the visible elements up by the number of pixels.
 * To move the visible elements up by one hex grid element, pass {@link
 * #CONST_Height} as the parameter. The component will automatically {@link
 * #repaint()}.
 * @param Pixels The number of pixels to move up.
 * @return The number of pixels moved up. This is always between 0 and {@code
 * abs(Pixels)}.
 public synchronized int moveUp(int Pixels) {
 int delta = m_ScrollPosition.y - Math.max(0, m_ScrollPosition.y - Math.max(0, Pixels));
 if (delta != 0) {
 m_ScrollPosition.y -= delta;
 repaint();
 return delta;
 /** Moves the visible elements to the right by the number of pixels.
 * To move the visible elements to the right by one hex grid element, pass
 * {@link #CONST_Width3fourth} as the parameter. The component will
 * automatically {@link #repaint()}.
 * @param Pixels The number of pixels to move to the right.
 * @return The number of pixels moved to the right. This is always between 0
 * and {@code abs(Pixels)}.
 public synchronized int moveRight(int Pixels) {
 int delta = Math.min(m_Model.getXElements() * CONST_Width3fourth + CONST_Width1fourth - getSize().width, m_ScrollPosition.x + Math.max(0, Pixels)) - m_ScrollPosition.x;
 if (delta != 0) {
 m_ScrollPosition.x += delta;
 repaint();
 return delta;
 /** Moves the visible elements down by the number of pixels.
 * To move the visible elements down by one hex grid element, pass {@link
 * #CONST_Height} as the parameter. The component will automatically {@link
 * #repaint()}.
 * @param Pixels The number of pixels to move down.
 * @return The number of pixels moved down. This is always between 0 and
 * {@code abs(Pixels)}.
 public synchronized int moveDown(int Pixels) {
 int delta = Math.min(m_Model.getYElements() * CONST_Height + CONST_Heighthalf - getSize().height, m_ScrollPosition.y + Math.max(0, Pixels)) - m_ScrollPosition.y;
 if (delta != 0) {
 m_ScrollPosition.y += delta;
 repaint();
 return delta;
 /** Checks if the hex grid element of the given index is currently
 * displayed on the screen (even just one pixel).
 * The intention of this method is to check if a {@link #repaint()} is
 * necessary or not.
 * @param ElementIndex The index of the element to check.
 * @return {@code true} if the hex grid element of the given index is
 * displayed on the screen, {@code false} if not.
 public synchronized boolean isElementOnScreen(Point ElementIndex) { return isElementInScope(ElementIndex, m_CurrentOffset, new Point(m_CurrentOffset.x + m_MaxColumn, m_CurrentOffset.y + m_MaxRow)); }
 /** Checks if the hex grid element of the given index is within the given
 * indexes.
 * The intention of this method is to check if a {@link #repaint()} is
 * necessary or not.
 * @param ElementIndex The index of the element to check.
 * @param ReferenceIndexLeftTop The left top index of the area to check.
 * @param ReferenceIndexRightBottom The right bottom index of the area to check.
 * @return {@code true} if the hex grid element of the given index is within
 * the given area, {@code false} if not.
 public synchronized boolean isElementInScope(Point ElementIndex, Point ReferenceIndexLeftTop, Point ReferenceIndexRightBottom) { if ((ElementIndex.x >= ReferenceIndexLeftTop.x) && (ElementIndex.x <= ReferenceIndexRightBottom.x) && (ElementIndex.y >= ReferenceIndexLeftTop.y) && (ElementIndex.y <= (ReferenceIndexRightBottom.y))) { return true; } else { return false; } }
 /** Return the {@link IHexGridElement hex grid element} shown at the given
 * pixel on the screen.
 * Remark: There seems to be a bug in retrieving the proper element,
 * propably caused by rounding errors and unprecise pixel calculations.
 * @param P The pixel on the screen.
 * @return The {@link IHexGridElement hex grid element} shown at the pixel.
 public synchronized IHexGridElement getElementAtPixel(Point P) {
 // @FIXME Here seems to be some bugs remaining
 int dummy = 0; // Variable for warning to indicate that there is something to do :)
 // Calculate the pixel on the image, not on the screen
 int px = P.x + m_PixelOffset.x;
 int py = P.y + m_PixelOffset.y;
 // Determine the x-index of the column (is maybe decreased by one)
 int x = px / CONST_Width3fourth + m_CurrentOffset.x;
 // If the column is odd, then shift the y-pixel by half element height
 if ((x % 2) == 1) { py -= CONST_Heighthalf; }
 // Determine the y-index of the row (is maybe decreased by one)
 int y = py / CONST_Height + m_CurrentOffset.y;
 // Normative coordinates to a single element
 px -= (x - m_CurrentOffset.x) * CONST_Width3fourth;
 py -= (y - m_CurrentOffset.y) * CONST_Height;
 // Check if the normative pixel is in the first quarter of a column
 if (px < CONST_Width1fourth) {
 // Adjustments to the index may be necessary
 if (py < CONST_Heighthalf) {
 // We are in the upper half of a hex-element
 double ty = CONST_Heighthalf - CONST_Steepness * px;
 if (py < ty) { x--; }
 } else {
 // We are in the lower half of a hex-element
 double ty = CONST_Heighthalf + CONST_Steepness * px;
 if (py > ty) {
 x--;
 y++;
 return m_Model.getElementAt(x, y);
}Ah, just to give you some idea: I use this component to visualize a hex grid map with more than 1 million grid elements. And it works, really fast, and requires less than 10 MByte of memory.

Design problem(split pane scrollpane Insets)

hi,
doing a exam simulator prgm
design is like,
Question (text area with scrollpane)
Answers (checkbox inside panel with scrollpane)
used split pane between qst and ans but big thick bar comes how to reduce size and it is not
moving.
used GridLayout for container and panel.
PROBLEM is how to leave space qst textarea appears from very left edge of screen how to leave some space
same prblm for checkbox they to appear extreme left on screen.

Put those components in a JPanel overwriting the getInsets() method like this:
JPanel cPane=new JPanel(){
    private final Insets _insets=new Insets(10,10,10,10);
    public Insets getInsets(){
        return _insets;
};...should do the trick, take a look at the Insets class if you need information on how defining it...

Problem with ScrollPane and JFrame Size

Hi,
The code is workin but after change the size of frame it works CORRECTLY.Please help me why this frame is small an scrollpane doesn't show at the beginning.
Here is the code:
import java.awt.*;
public class canvasExp extends Canvas
     private static final long serialVersionUID = 1L;
     ImageLoader map=new ImageLoader();
    Image img = map.GetImg();
    int h, w;               // the height and width of this canvas
     public void update(Graphics g)
        paint(g);
    public void paint(Graphics g)
            if(img != null)
                 h = getSize().height;
                 System.out.println("h:"+h);
                  w = getSize().width;
                  System.out.println("w:"+w);
                  g.drawRect(0,0, w-1, h-1);     // Draw border
              // System.out.println("Size= "+this.getSize());
                 g.drawImage(img, 0,0,this.getWidth(),this.getHeight(), this);
                int width = img.getWidth(this);
                //System.out.println("W: "+width);
                int height = img.getHeight(this);
                //System.out.println("H: "+height);
                if(width != -1 && width != getWidth())
                    setSize(width, getHeight());
                if(height != -1 && height != getHeight())
                    setSize(getWidth(), height);
}I create frame here...
import java.awt.*;
import java.awt.event.*;
import javax.swing.JFrame;
public class frame extends JFrame implements MouseMotionListener,MouseListener
     private static final long serialVersionUID = 1L;
    private ScrollPane scrollPane;
    private int dragStartX;
    private int dragStartY;
    private int lastX;
    private int lastY;
    int cordX;
    int cordY;
    canvasExp canvas;
    public frame()
        super("test");
        canvas = new canvasExp();
        canvas.addMouseListener(this);
        canvas.addMouseMotionListener(this);
        scrollPane = new ScrollPane();
        scrollPane.setEnabled(true);
        scrollPane.add(canvas);
        add(scrollPane);
        setSize(300,300);
        pack();
        setVisible(true);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    public void mousePressed(MouseEvent e)
        dragStartX = e.getX();
        dragStartY = e.getY();
        lastX = getX();
        lastY = getY();
    public void mouseReleased(MouseEvent mouseevent)
    public void mouseClicked(MouseEvent e)
        cordX = e.getX();
        cordY = e.getY();
        System.out.println((new StringBuilder()).append(cordX).append(",").append(cordY).toString());
    public void mouseEntered(MouseEvent mouseevent)
    public void mouseExited(MouseEvent mouseevent)
    public void mouseMoved(MouseEvent mouseevent)
    public void mouseDragged(MouseEvent e)
        if(e.getX() != lastX || e.getY() != lastY)
            Point p = scrollPane.getScrollPosition();
            p.translate(dragStartX - e.getX(), dragStartY - e.getY());
            scrollPane.setScrollPosition(p);
}...and call here
public class main {
     public main(){}
     public static void main (String args[])
         frame f = new frame();
}There is something I couldn't see here.By the way ImageLoader is workin I get the image.
Thank you for your help,please answer me....

I'm not going to even attempt to resolve the problem posted. There are other problems with your code that should take priority.
-- class names by convention start with a capital letter.
-- don't use the name of a common class from the standard API for your custom class, not even with a difference of case. It'll come back to bite you.
-- don't mix awt and Swing components in the same GUI. Change your class that extends Canvas to extend JPanel instead, and override paintComponent(...) instead of paint(...).
-- launch your GUI on the EDT by wrapping it in a SwingUtilities.invokeLater or EventQueue.invokeLater.
-- calling setSize(...) followed by pack() is meaningless. Use one or the other.
-- That's not the correct way to display a component in a scroll pane.
Ah, well, and the problem is that when you call pack(), it retrieves the preferredSize of the components in the JFrame, and you haven't set a preferredSize for the scroll pane.
Please, for your own good, take a break from whatever it is you're working on and go through The Java™ Tutorials: [Creating a GUI with JFC/Swing|http://java.sun.com/docs/books/tutorial/uiswing/TOC.html]
db

Problem with drawing in a scrollpane using clipbounds

Hello
Setup is a JFrame containing a splitpane with on the left just some config buttons and on the right a scrollpane.
Inside the scrollpane I want to draw big waveforms.
This is represented by a long array of 1's and 0's for the Y coordinates.
On drawing in paintComponents method I allways reconstruct a GeneralPath, based on the Clipbouns returned by the Graphics variable.
I have to reconstruct the GeneralPath polygon because my data can be millions long. And therefor I have to limit the points that are drawn.
When I allways reconstruct this GeneralPath, upon scrolling the polygon is shown scrappy, as in the line connecting the points will only be half shown or almost not.
Resizing the window or just minimize maximize and it is shown ok.
I do not have this problem when the GeneralPath I construct is only once made upfront and never remade in the paintComponent method.
But as I need the clipbounds to know which part to construct I need to rebuild this polygon over and over again.
I have tried to draw it with Line2D.Double but I get almost the same effect, parts of the lines not being drawn ok.
Below is the code of the Panel inside the ScrollPane responsible for this drawing.
public class Usr_Test_L extends JPanel
final static Color bg = Color.black;
final static Color fg = Color.white;
final static Color wave = Color.red;
final static Color txt = Color.green;
final static Color grid = Color.lightGray;
private static final BasicStroke SOLID = new BasicStroke(1.0f);
private static final BasicStroke BOLD = new BasicStroke(3.0f);
private double maxX = 0.0;
private double maxY = 0.0;
private double gridWidth;
private double gridHeight;
private int panelWidth;
private int panelHeight;
boolean firstTime = true;
private double[] xPoints = null;
private double[] yPoints = null;
GeneralPath polygon;
boolean polyOk = false;
private double waveHeight = 0;
private boolean gridOn = true;
private Usr_Test_R scrollPane = null;
Usr_Test_L(Usr_Test_R scrollPane)
 super(true);
 this.scrollPane = scrollPane;
 buildGui();
void buildGui()
 setBackground(bg);
 setForeground(fg);
 //Let the user scroll by dragging to outside the window.
 setAutoscrolls(true); //enable synthetic drag events
// addMouseMotionListener(this); //handle mouse drags
 repaint();
private void generateWave(int cycles, double height)
 waveHeight = height;
 xPoints = new double[cycles];
 yPoints = new double[cycles];
 Random r = new Random();
 for ( int i = 0; i < cycles; i++ )
 xPoints[i] = i;
 yPoints[i] = (int)( Math.pow(-1.0,i) ) * ( r.nextInt(2) );
// if ( ( i % 10 ) == 0 ) yPoints[i] = height;
// else yPoints[i] = height + gridHeight;
// System.err.println("P"+i+"("+xPoints[i]+","+yPoints[i]+")");
private void generateSineWave(int cycles, double height)
 waveHeight = height;
 xPoints = new double[cycles];
 yPoints = new double[cycles];
 double j, xval, yval;
 j = 0;
 int i = 0;
 while (i < cycles)
 xval = j;
 yval = Math.sin(j) * 10.0 + 20;
 xPoints[i] = xval;
 yPoints[i] = yval;
 i++;
 j += 0.01;
public Dimension getPreferredSize() // <== used because of revalidate, parent scrollpane asks preferredsize ..., so we overruled the method
 return new Dimension(panelWidth, panelHeight);
public void drawLine(int cycles, int height)
 generateWave(cycles,(int)(gridHeight*height));
 maxX = gridWidth * cycles;
 maxY = gridHeight * cycles;
 while ( maxX > panelWidth ) panelWidth *= 2;
 while ( maxY > panelHeight ) panelHeight *= 2;
// polyOk = buildPolygon();
 revalidate();
 repaint();
public void drawSine(int cycles, int height)
 generateSineWave(cycles,(int)(gridHeight*height));
 maxX = gridWidth * cycles;
 maxY = gridHeight * cycles;
 while ( maxX > panelWidth ) panelWidth *= 2;
 while ( maxY > panelHeight ) panelHeight *= 2;
// polyOk = buildPolygon();
 revalidate();
 repaint();
public void zoomIn()
 gridWidth *= 2;
 gridHeight *= 2;
 repaint();
public void zoomOut()
 gridWidth /= 2;
 gridHeight /= 2;
 repaint();
private void initPanel()
 Dimension d = getSize();
 panelWidth = d.width;
 panelHeight = d.height;
 maxX = panelWidth;
 maxY = panelHeight;
 gridWidth = panelWidth / 8;
 gridHeight = panelHeight / 8;
 scrollPane.getHorBar().setUnitIncrement((int)(gridWidth*3)); // times 2 otherwise no clipbounds are allways too small
 scrollPane.getHorBar().setBlockIncrement((int)(gridWidth*3));
 scrollPane.getVerBar().setUnitIncrement((int)(gridHeight*3));
 scrollPane.getVerBar().setBlockIncrement((int)(gridHeight*3));
public void grid()
 if ( gridOn ) gridOn = false;
 else gridOn = true;
private void drawGrid(Graphics2D g2, Rectangle clip)
 if ( ! gridOn ) return;
 // draw grid
 g2.setPaint(grid);
 // new good grid
 double startX = clip.getX() + ( gridWidth - ( clip.getX() % gridWidth ) );
 double endX = clip.getX() + clip.getWidth();
 double startY = clip.getY() + ( gridHeight - ( clip.getY() % gridHeight ) );
 double endY = clip.getY() + clip.getHeight();
 double y = startY;
 while ( startX < endX )
 while ( y < endY )
 g2.draw(new Rectangle2D.Double( startX - 0.5, y - 0.5, 1.0, 1.0 ));
 y += gridHeight;
 y = startY;
 startX += gridWidth;
private boolean buildPolygon(Rectangle clip)
 if ( xPoints != null && yPoints != null )
 polygon = new GeneralPath(GeneralPath.WIND_NON_ZERO,xPoints.length);
 else
 return false;
 double x = xPoints[0] * gridWidth;
 double y = waveHeight;
 polygon.moveTo((float)xPoints[0], (float)yPoints[0]);
 for ( int index = 0; index < xPoints.length; index++ )
 x = xPoints[index] * gridWidth;
 y = waveHeight + ( yPoints[index] * gridHeight );
 if ( x > ( clip.getX() + clip.getWidth() ) ) break;
 if ( y < clip.getY() || y > ( clip.getY() + clip.getHeight() ) ) continue;
 if ( x < clip.getX() || x > ( clip.getX() + clip.getWidth() ) ) continue;
 polygon.lineTo((float)x, (float)y);
 return true;
private boolean drawLines(Graphics2D g2, Rectangle clip)
 if ( xPoints == null || yPoints == null ) return false;
 double x1 = xPoints[0] * gridWidth;
 double y1 = waveHeight;
 double x2, y2;
 boolean cont = false;
 for ( int index = 0; index < xPoints.length; index++ )
 x2 = xPoints[index] * gridWidth;
 y2 = waveHeight + ( yPoints[index] * gridHeight );
 if ( x1 > ( clip.getX() + clip.getWidth() ) )
 break;
 if ( x2 > ( clip.getX() + clip.getWidth() ) )
 break;
 if ( y2 < clip.getY() || y2 > ( clip.getY() + clip.getHeight() ) )
 cont = true;
 if ( x2 < clip.getX() || x2 > ( clip.getX() + clip.getWidth() ) )
 cont = true;
 if ( ! cont ) g2.draw(new Line2D.Double(x1,y1,x2,y2));
 x1 = x2;
 y1 = y2;
 cont = false;
 return true;
public void paintComponent(Graphics g)
 super.paintComponent(g);
 Graphics2D g2 = (Graphics2D) g;
 if ( firstTime )
 initPanel();
 firstTime = false;
 // get clip bounds
 Rectangle clip = new Rectangle();
 clip = g2.getClipBounds(clip);
 // draw grid
 drawGrid(g2,clip);
 // draw waveform
 g2.setPaint(wave);
 g2.setStroke(SOLID);
 if ( buildPolygon(clip) ) g2.draw(polygon);
// if ( polyOk ) g2.draw(polygon);
// drawLines(g2,clip);
}

I have added a standalone testcase for ease.
import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;
import java.util.*;
public class Scrolling {
 public static void main(String[] args) {
 JFrame f = new JFrame();
 f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 f.getContentPane().add(new JScrollPane(new DrawPanel()));
 f.setSize(400,300);
 f.setLocationRelativeTo(null);
 f.setVisible(true);
class DrawPanel extends JPanel {
 private GeneralPath polygon = new GeneralPath(GeneralPath.WIND_NON_ZERO,1000);
 private int[] coords;
 public DrawPanel() {
 setBackground(Color.white);
 buildPolygon();
 private void buildPolygon() {
 coords = new int[2000];
 Random r = new Random();
 int height = 80;
 int gridHeight = 10;
 int gridWidth = 10;
 int j = 0;
 for (int i=0, dir=-1; i<1000; i++, dir=-dir) {
 coords[j++] = i * gridWidth;
 coords[j++] = height + dir*gridHeight*r.nextInt(2);
 private void drawPolygonClipped(Rectangle clip)
polygon = new GeneralPath(GeneralPath.WIND_NON_ZERO,1000);
 polygon.moveTo(0,80);
 for ( int i = 0; i < 2000; i++ )
 if ( coords[i] > ( clip.getX() + clip.getWidth() ) ) break;
 if ( coords[i+1] < clip.getY() || coords[i+1] > ( clip.getY() + clip.getHeight() ) ) continue;
 if ( coords[i] < clip.getX() || coords[i] > ( clip.getX() + clip.getWidth() ) ) continue;
 polygon.lineTo(coords[i++],coords);
private void drawPolygon(Rectangle clip)
polygon = new GeneralPath(GeneralPath.WIND_NON_ZERO,1000);
 polygon.moveTo(0,80);
 for ( int i = 0; i < 2000; i++ )
 polygon.lineTo(coords[i++],coords[i]);
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
 Rectangle clip = new Rectangle();
 g.getClipBounds(clip);
 drawPolygonClipped(clip);
 //drawPolygon(clip);
g2.draw(polygon);
public Dimension getPreferredSize() {
return new Dimension(1500,500);

JScrollpane does not work properly when I interlinked to another Scrollpane

Hi,
I am trying to develop a small Editor using java Swing. I hav to display Line numbers also. for that i used another textarea and set the scrollbar model of that to the scrollbar model of text area where i type the programs. the module works perfectly in the first appearance.. scrolls same time..but the problem arises when i insert a new line into or delete a new line from the text area. when i am inserting or deleting the scrollbar of the prgram text area scrolls down immdtly after the insertion or deletion...
I tried a lot to solve the problem. Please help me...

I hav to display Line numbers ...Whatever component you use to display the line number you should add the component directly to the scroll pane that contains your main text area. You do this by using the scrollPane.setRowHeaderView(). I've posted several example of this if you search the forums.

How can i make my scrollpane in a way that at the opening of a frame it doe

How can i make my scrollpane in a way that at the opening of a frame it does not scroll down automatically?
code is below
import java.awt.*;
import javax.swing.*;
import javax.swing.*;
import java.awt.event.*;
import java.net.*;
import javax.swing.JOptionPane.*;
import java.io.*;
import javax.swing.colorchooser.*;
import javax.swing.filechooser.*;
import javax.accessibility.*;
import javax.swing.border.*;
import java.sql.*;
public class Signup extends JFrame
     JLabel p1,p2,p3,p4,p5,p6,uid,upass,cpass,fname,sname,hint,sl,ed,age,adr,cit,zip;
     JTextField uname,fnamet,snamet,hintt,adrt,adrt1,city,zipcode;
     JPasswordField upassw,cpassw;
     JComboBox sex,education,agegr;
     Signup()
     Container c=getContentPane();
     c.setLayout(null);
     c.setBackground(Color.white);
     /** JPanel c = new JPanel();
     c.setBackground(Color.white);
     int v = ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS;
     int h = ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED;
     JScrollPane jsp = new JScrollPane(c, v, h); ***/
p1=new JLabel("Create Your Icafe!ID",10);
     p2=new JLabel("Personal Information");
     p3=new JLabel("User Address");
     p4=new JLabel("Tell Us About Your Hobbiess (Optional) ");
     p5=new JLabel("Tell us something about what you like. This will help us choose the kind of content to display on           your pages.");
     p6=new JLabel("--------------------------------------------------------------------------------");
uid=new JLabel("User Id");
     upass=new JLabel("Password");
     cpass=new JLabel("Confirmation Password");
     fname=new JLabel("UserName");
     sname=new JLabel("SurName");
     hint=new JLabel("Hint Question");
sl=new JLabel("Sex");
     ed=new JLabel("Education");
     age=new JLabel("Age Group");
     adr=new JLabel("Address");
cit=new JLabel("City");
zip=new JLabel("ZipCode");
     uname=new JTextField(10);
     uname.requestFocus();
     uname.setToolTipText("UserName");
upassw=new JPasswordField(10);
     upassw.setToolTipText("Password");
     upassw.setEchoChar('*');
     cpassw=new JPasswordField(10);
     cpassw.setToolTipText("Confirmation Password");
     cpassw.setEchoChar('*');
     fnamet=new JTextField(10);
     fnamet.setToolTipText("FullName");
     snamet=new JTextField(10);
     snamet.setToolTipText("SurName");
     hintt=new JTextField(10);
     hintt.setToolTipText("Hint Question");
String[] gender={"[Select one]","Male","Female"};
     sex = new JComboBox(gender);
String[] edu={"[Select one]","S.S.C","Inter","Graduate","Post Graduate"};
     education= new JComboBox(edu);
String[] ageg={"[Select one]","0 - 15","16 - 35","36 - 70","70 - 100"};
     agegr= new JComboBox(ageg);
adrt=new JTextField(15);
     adrt.setToolTipText("Address");
     adrt1=new JTextField(15);
     adrt1.setToolTipText("Address");
     city=new JTextField(15);
     city.setToolTipText("City");
zipcode=new JTextField(15);
     zipcode.setToolTipText("ZipCode");
     p1.setBounds(200,70,160,30);
     uid.setBounds(350,100,160,30);
     uname.setBounds(400,100,160,30);
     upass.setBounds(335,140,160,30);
     upassw.setBounds(400,140,160,30);
     cpass.setBounds(260,180,160,30);
     cpassw.setBounds(400,180,160,30);
     p2.setBounds(200,220,160,30);
     fname.setBounds(330,260,160,30);
     fnamet.setBounds(400,260,160,30);
     sname.setBounds(335,300,160,30);
     snamet.setBounds(400,300,160,30);
hint.setBounds(315,340,160,30);
hintt.setBounds(400,340,160,30);
     sl.setBounds(370,380,160,30);
     sex.setBounds(400,380,160,30);
     ed.setBounds(335,420,160,30);
     education.setBounds(400,420,160,30);
age.setBounds(330,460,160,30);
agegr.setBounds(400,460,160,30);
p3.setBounds(200,500,160,30);
     adr.setBounds(340,540,160,30);
     adrt.setBounds(400,540,160,30);
     adrt1.setBounds(400,580,160,30);
     cit.setBounds(370,620,160,30);
     city.setBounds(400,620,160,30);
zip.setBounds(590,620,160,30);
zipcode.setBounds(640,620,160,30);
     Font font = new Font("SansSerif",Font.BOLD, 12);
     setFont(font);
     c.add(p1);
c.add(uid);
     c.add(uname);
     c.add(upass);
     c.add(upassw);
c.add(cpass);
     c.add(cpassw);
c.add(p2);
c.add(fname);
     c.add(fnamet);
c.add(sname);
c.add(snamet);
     c.add(hint);
c.add(hintt);
c.add(sl);
c.add(sex);
c.add(ed);
     c.add(education);
c.add(age);
     c.add(agegr);
c.add(p3);
c.add(adr);
     c.add(adrt);
     c.add(adrt1);
c.add(cit);
c.add(city);
c.add(zip);
c.add(zipcode);
     setResizable(false);
     //int a=DO_NOTHING_ON_CLOSE;
     //setDefaultCloseOperation(a);
     show();
     setSize(800,500);
// Border raisedBorder = new BevelBorder(BevelBorder.RAISED);
     setContentPane(c);
public static void main (String arg[])
     try{
     UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
     }catch(Exception s)
     Signup swu=new Signup();

just try the following:
jsp.getVerticalScrollbar().setValue(0);after inserting and adding all your components. this will set the vertical scrollbar up to the very first line.
regards

How do I create an infinite drawing canvas in a ScrollPane?

I wanted to figure this out on my own, but it is time to ask for help. I've tried too many different things. The closest I've come to the behaviour I want is with this code:
final BorderPane root = new BorderPane();
final Pane canvasWrapper = new Pane();
canvasWrapper.setPrefSize(800, 500);
canvasWrapper.setMaxSize(Double.MAX_VALUE, Double.MAX_VALUE);
canvasWrapper.setStyle("-fx-background-color: lightgray; -fx-border-color: green; -fx-border-width: 2px;");
final Group canvas = new Group();
canvasWrapper.getChildren().add(canvas);
final ScrollPane scroll = new ScrollPane();
scroll.setContent(canvasWrapper);
root.setCenter(scroll);
// event code for adding circles and lines to the canvas
I want the ScrollPane to be filled with the Pane, so it can catch events for drawing. When the stage is resized, the ScrollPane is resized too. This the result of the BorderPane. What I want is to expand the window and have canvasWrapper expand to fill the entire ScrollPane viewport. When the stage is made smaller the ScrollPane shrinks, but I want the canvasWrapper to retain its size. The idea is the drawing canvas can only grow. When it gets too large for the current stage/ScrollPane size, the scrollpane can be used to navigate around the canvas.
I tried using
scroll.setFitToHeight(true);
scroll.setFitToWidth(true);
but this causes the Pane to be made smaller when the viewport is made smaller.

I figured it out!
Use
scroll.setFitToHeight(true);
scroll.setFitToWidth(true);
to resize the Pane as the view port changes.
Save the canvas' size as the Pane's size.
canvas.layoutBoundsProperty().addListener(new ChangeListener<Bounds>() {
 @Override
 public void changed(ObservableValue<? extends Bounds> ov, Bounds t, Bounds t1) {
 canvasWrapper.setMinSize(t1.getMaxX(), t1.getMaxY());
This forces the Pane to always be as large as the group is.
Missed a piece of code - jrguenther

How to print the components in scrollpane

hi there,
can anyone tell me how to print the scrollpane components, i mean the headers & the main view of the component. i've a scrollpane with the following code and i want to print the components:
JScrollPane pane = new JScrollPane(aTextPane);
pane.setRowHeaderView(aLineNumberComponent);my requirement is i've a editor & lineno component as textpanes and added to scrollpane & when asked to print it should print the lineno component which resides in scrollpane's row header & the editor textpane which is the main view in the scrollpane. how can i achieve this?
i'd would appreciate any suggestions & codes given.
thanx in advance.

After adding/removing components to/from a panel try:
panel.revalidate();
panel.repaint() // sometimes this is also needed, I'm
not sure whyI'm not certain, but I think that panel.revalidate() implicitly calls repaint() only if something actually changed in the layout. If nothing changed, it sees no reason to repaint; hence, if something changed in appearance but not in layout, you have to repaint it yourself.
Or something like that. I'm no expert. ;)

ICal woes - any help please

Hi everyone, I am having some major iCal woes that I hope someone has the answer to.
Ok this is how I handle my workflow. I have numerous calendars such as "call", "viewing", "meeting", "work misc", "personal" etc. All colour coded and I use the month view as standard.
Under SL I would double click the day I add an event go through the boxes (name, location, time, etc) click save and job done.
Now under Lion when I double click a day I get an event box but only the header. So I have to type the header hit return then double click on the event again to get the box up so I can assign the event the right time and calendar to use. This is taking twice as long as it did before under SL and is a pain when you have a client on the phone. Am I missing something here? Why is it now so hard? - and I have tried that quick entry business but it doesn't work for me, I simply want the whole calendar entry box when I double click in month view.
Next problem is all new events go in as a all day event. Again another click I didn't need to do in SL. Then untick all day and enter a time LionCal doesn't set the end time 1 hour later anymore it sets it hours later for me, sometimes into the next day so I have to click into the date box and type the end date, again a massive slow down in my workflow.
Finally and most annoyingly in month view I cannot for the life of me get a 12 hour clock with AM/PM. I checked my international page in sys prefs and all is ok but LionCal is not playing ball.
Any help would be appreciated as I love iCal and run my life with it over MobileMe.

If you want to Commit changes at every record level in a Multi-Record Block, you may have to write the following triggers at the block level :-
1) Key-Down
2) Key-Up
3) You will also have to handle Mouse Events
i.e When-Mosue-Click etc
In each of these triggers, issue a commit statement :-
i.e.
Trigger Name :- KEY-DOWN [ Defined at Block Level ]
Trigger Code
Commit_Form;
Next_Record;
The Commit_Form statement will display a message for the user to COMMIT transaction to the DB.
Shailender

Is it possible to load .swfs on top of scrollpane

I have a scrollpane that links to a movie clip in my library
that holds about 40 buttons. I'm using the scrollpane since the
layout doesn't have enough room to show them all at once. This way
the user can scroll down to see all the names. These buttons have
the names of various articles on them. Upon clicking on an article
a flashpaper .swf file of that article is loaded. Right now the
article is loading into my scrollpane and seems to be kicking out
the movie clip that contains the buttons. Upon closing out the
flashpaper article the buttons return and work fine. The only issue
I have with this is that if the user scrolls down, clicks on an
article and then closes it out, the buttons reappear, but they are
back at the top. The user would then need to scroll back down to
where they were if there were wanting to click on the next article
in line. Not a big deal, but it gets kina annoying after a while.
I'd like to figure out a way for the flashpaper articles to load on
top of the scroll pane so that when the user closes the flashpaper
article the links below are where they left off. So far no matter
what I try the flashpapers keep loading inside the scroll pane.
Here is the code I'm using as applied to one of the 40 buttons:
on (release) {
_parent.loadMovie("MM/flashpaper/art2_120106_prev_injuries_unint.swf",
1);
art2_120106_prev_injuries_unint.swf is the name of the
flashpaper article being loaded.
-I've tried changing the level number and that doesn't work
-I've tried creating an empty movie clip in a layer above the
buttons and that doesn't work:
on (release) {
_parent.loadMovie("MM/flashpaper/art2_120106_prev_injuries_unint.swf",
"artMC");
("artMC" is the empty movie clip)
-I've tride creating an empty movie clip in the main timeline
above the scrollpane and that doesn't work either
any thoughts on how I should handle this?
thanks

import mx.managers.DepthManager;
movieclipyouwantontop.setDepthAbove(movieclipyouwantonbottom);
use the creatEmptyMovieClip method you tried before then
place it into what i gave

Airport express "G" - My woes and some thoughts. . .

I got the airport about this time last year. it worked great and i loved it. In December 2007 I moved to an apartment. I got the local cable co's internet, ran it to my ax and all was well. 6 weeks ago, due to our wonderful economy, i had the cable shut off as I talked to one of my neighbors who has wireless internet running unprotected (no password)..i asked him if i could leech for a bit till i got things sorted. he said cool and all was.....hmmm. SO in my airport menu i select his network and my internet works, sometimes drops then comes right back but no biggie. I reset my ax to just do airtunes and join his network, it restarted and voila, airtunes. problem is that in the last month i get a lot more drop outs and if i go more than 2 days with out streaming by ax disappears and i have to do a hard reset to get it to show up in the utility. The light is green but nothing...sometimes the amber light blinks and it never come on line at all....grrrrrr.
could all my newfound ax woes be due to the fact i am adding it to his network? i had no issues at all when i created my own one with my internet and airtunes.....
anyone?
EDIT: let me ask this then...when i am streaming music from my mbp to the ax, am i doint it dorectly or am i using his network? If I am sending music from my MBP to the ax via his network then that would basically answer all my questions, if the mbp goes direct then I have no clue....
edits as i am brainstorming

EDIT: let me ask this then...when i am streaming music from my mbp to the ax, am i doint it dorectly or am i using his network?
It goes from your MacBook Pro to his wireless base station... then from his base station to the AX. So it depends on the performance of his base station and network.

ScrollPane woes 2

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