http://imagej.273.s1.nabble.com/Display-an-image-on-a-JPanel-tp5005268p5005311.html
my GUI is messed up. Some how there was a design error that didn't show
> Thanks Curtis, I have minimal code that re-creates the problem with an
> application class, TestApp, and a single class, JImagePanel.
>
> I have no idea how to get them into github. I've never had any
> cooperators with whom to collaborate so I'm absolutely ignorant of how to
> use github.
>
>
> On Thu, Oct 24, 2013 at 11:10 AM, Curtis Rueden <
[hidden email]> wrote:
>
>> Hi Robert,
>>
>> Can you please post a complete example demonstrating the problem?
>> GitHub.com is a nice place to do this. It will make it much easier for
>> people to help you.
>>
>> Regards,
>> Curtis
>>
>>
>> On Thu, Oct 24, 2013 at 12:25 PM, Robert Lockwood <
[hidden email]
>> >wrote:
>>
>> > In order to have an ImagePanel for my application I downloaded the
>> > JImagePanel from GitHub in response to Johannes reply, created a class
>> for
>> > it in my project changing the package to my package in Eclipse Keppler.
>> >
>> > In my GUI initialization where the GUI is built I have:
>> >
>> > jImagePanel = new JImagePanel();
>> > jImagePanel.setName("jImagePanel");
>> > jImagePanel.setBorder(new LineBorder(new Color(0, 0, 0)));
>> > jImagePanel.setBounds(10, 10, 641, 481);
>> > jImagePanel.setBackground(Color.WHITE);
>> > jImagePanel.setOpaque(false);
>> > pnlBase.add(jImagePanel);
>> >
>> > when the image is read I display it with:
>> >
>> > if (!jImagePanel.isOpaque()) {
>> > jImagePanel.setOpaque(true);
>> > }
>> >
>> > jImagePanel.updateImage(imp);
>> >
>> > When I shift from Source to Design Google Builder crashes indicating
>> > problems in JImagePanel's method paintCompnent().
>> >
>> > When I attempt to run it the GUI does not display properly, the
>> contents of
>> > the JFrame are gray. Moving the cursor over the contents exposes all
>> the
>> > JButtons, but nothing else, and clicking on the button results in the
>> > expected display of my file selector. If the file is selected the image
>> > displays correctly as do all the other visual objects in the JFrame.
>> >
>> > I get NullPointerException errors that finger the same line that trying
>> to
>> > move to Display fingers.
>> >
>> > I modified the below code to check that imp was not null but it had no
>> > effect.
>> >
>> > Johannes gave another URL for the code but I don't know how to get that
>> > code.
>> >
>> > I guess I'm partway there ...
>> >
>> > From JImagePanel:
>> >
>> > @Override
>> > public void paintComponent(Graphics g) {
>> > super.paintComponent(g);
>> > try {
>> > if (imageUpdated) {
>> > imageUpdated = false;
>> > imp.updateImage();
>> > }
>> > Java2.setBilinearInterpolation(g,
>> > Prefs.interpolateScaledImages);
>> >
>> > Image img = imp.getProcessor().createImage(); // THIS IS
>> THE
>> > ERROR LINE
>> >
>> > if (img != null) {
>> > waitForImage(img);
>> > int displayWidth = (int) (srcRect.width *
>> magnification);
>> > int displayHeight = (int) (srcRect.height *
>> magnification);
>> > Dimension size = getSize();
>> > int offsetX = (size.width - displayWidth) / 2;
>> > int offsetY = (size.height - displayHeight) / 2;
>> > g.translate(offsetX, offsetY);
>> > g.drawImage(img, 0, 0, displayWidth, displayHeight,
>> > srcRect.x,
>> > srcRect.y, srcRect.x + srcRect.width, srcRect.y
>> > + srcRect.height, null);
>> > }
>> > drawOverlay(g);
>> > } catch (OutOfMemoryError e) {
>> > IJ.outOfMemory("Paint");
>> > }
>> > }
>> >
>> >
>> >
>> >
>> > On Wed, Oct 23, 2013 at 7:31 AM, Johannes Schindelin <
>> >
[hidden email]> wrote:
>> >
>> > > Hi Robert,
>> > >
>> > > On Tue, 22 Oct 2013, Robert Lockwood wrote:
>> > >
>> > > > I've an application that collects a monochrome "image" as an array
>> of
>> > > > "unsigned short" (short[]), saves it as a TIFF (thanks for that
>> help)
>> > > > and displays it on JPanel. I'd rather use the ImageJ methods etc.
>> to
>> > > > display the image on the JPanel and reduce my code.
>> > > >
>> > > > Is this possible? How?
>> > >
>> > > Unfortunately, the ImageCanvas -- ImageJ 1.x' AWT component intended
>> to
>> > > display images -- is tightly bound to the ImageWindow class and does
>> not
>> > > play well with other components in the same AWT container.
>> > >
>> > > Besides, all the claims that AWT and Swing mix well now seem to be
>> > > premature still.
>> > >
>> > > Therefore we integrated Simon Andrews' JImagePanel into Fiji:
>> > >
>> > >
>> > >
>> >
>>
https://github.com/fiji/fiji/blob/master/src-plugins/fiji-lib/src/main/java/fiji/util/gui/JImagePanel.java>> > >
>> > > It should be relatively easy to integrate into your software: it is
>> > > contained in the fiji-lib artifact available at
>>
http://maven.imagej.net/>> > .
>> > >
>> > > You could also extract the file and insert into your own source code,
>> of
>> > > course, but you'd ask for diverging versions.
>> > >
>> > > Ciao,
>> > > Johannes
>> > >
>> >
>> >
>> >
>> > --
>> > When I was 12 I thought I would live forever.
>> > So far, so good.
>> >
>> > --
>> > ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>> >
>>
>> --
>> ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>>
>
>
>
> --
> When I was 12 I thought I would live forever.
> So far, so good.
>