I have a JApplet that loads images from a jar file and then displays each
image on a seperate tab (JTabbedPane). These images are placed onto labels
which the tabs use and they can be scaled and moved (placed into a scroll
pane), but I am having problems trying to draw on them.
When I try to draw on an image, I get a duplicate image drawn in the upper
left hand corner with the marks I added (just working with lines for now).
I know that this image can be drawn at differet locations by using the
Graphics2D.drawImage(image, x, y,...) where x and y refer to the point
where the image is to be drawn, but what I REALLY want is to have the image
on the tab replaced by the newly drawn image instead of drawing a seperate
one to begin with. Is this even possible? Do I always have to draw a
seperate image?
Again, I want to draw a line on an image I got from a tab, and then replace
the original image with the one I just drew on so when you go back to the
tab the image with a line in it will be shown. For some reason, it just
never seems to work that way!
Here is a code snippet of what I am currently doing:
private void drawLine()
{
//Get the active scroll pane
m_jsPane = (JScrollPane) m_tabbedPane.getSelectedComponent();
m_port = m_jsPane.getViewport();
//My version of a scroll label that allows grabbing to move it
GrabAndScrollLabel gnsLabel = (GrabAndScrollLabel) m_port.getView();
m_currentImageIcon = (ImageIcon) gnsLabel.getIcon();
m_currentImage = m_currentImageIcon.getImage();
try
{
MediaTracker tracker = new MediaTracker(this);
tracker.addImage(m_currentImage, 0);
tracker.waitForID(0);
}
catch (InterruptedException ie)
{
//Harmless...but show signs of for testing
System.out.println("Interupted in draw");
}
int iw = m_currentImage.getWidth(this);
int ih = m_currentImage.getHeight(this);
m_buffIm = new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);
//Big is a BufferedImage at class level
big = m_buffIm.createGraphics();
//The X and Y offset the image within the rect, not the rect itself
big.drawImage(m_currentImage, 0, 0, this);
//Oraline just holds the begin and end points
OraLine oraLine = new OraLine(m_startX, m_startY, m_endX, m_endY);
//The imageModHolder keeps track of all the lines added to an image
gnsLabel.get_oraImage().getImageModHolder().add_shape(oraLine);
gnsLabel.applyModifications(big);
//Now that the line is added, reset the image with the new one
ImageIcon newIcon = new ImageIcon(m_currentImage);
gnsLabel.setIcon(newIcon);
m_port.setView(gnsLabel);
m_jsPane.setViewport(m_port);
getRootPane().revalidate();
getRootPane().repaint();
}
public void paint(Graphics g)
{
super.paint(g);
Graphics2D g2 = (Graphics2D) g;
if (m_buffIm != null)
{
g2.drawImage(m_buffIm, 0, 0, this);
}
}
//This is in the GrabAndScrollLabel class
public BufferedImage applyModifications(Graphics2D g2D)
{
ImageIcon icon = oraImage.getImageIcon();
BufferedImage bi = new BufferedImage(icon.getIconWidth(),
icon.getIconHeight(),
BufferedImage.TYPE_INT_ARGB);
ImageModHolder mods = oraImage.getImageModHolder();
g2D.rotate(mods.get_rotation());
g2D.scale(mods.get_zoomFactor(), mods.get_zoomFactor());
Iterator shapeIter = mods.get_shapeList().iterator();
while(shapeIter.hasNext())
{
OraShape shape = (OraShape)shapeIter.next();
shape.draw(g2D);
}
return bi;
}
That's about it. THANKS for helping.
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff JAVA2D-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
