I have developed one desktop application using swing under which i have used JavaFx components, i have a few camera which i drag to the 2*2 layout view, it's working fine, now as soon as i changed the layout from 2*2 to 4*4, the view gets changed, then later on the dragged camera remain same on the canvas, but the streaming coming from the camera initially stops and then starts, i just want the video stream coming from the camera to remain consistent, without restarting it, what i have did now, is to release the Media player , Created the updated Canvas and Add it into the panel, but i guess it's not a proper solution, can anyone help me out with this issue, thanks well in advance.
Any kind of help is highly appreciable.
You can not remove the media player Canvas from the frame component hierarchy, nor can you hide it.
You must do something else like minimise it's size to 0,0 use a custom layout manager and move it's position to 0,0 or -1,-1 may work.
To emulate hiding, you could use a CardLayout with a video view and a blank view and switch between them.
There's an example in the vlcj test sources that shows one approach: https://github.com/caprica/vlcj/blob/master/src/test/java/uk/co/caprica/vlcj/test/layout/AdaptiveLayoutTest.java
Related
I used to have a nice little fragment that loaded the camera in a frame (An image overlayed on top in a frame layout). After doing some refactoring to my code( which I have gone over Incessantly), I suddenly noticed that my camera didn't work.The SurfaceView that was supposed to show the camera was blank.
Over the last four hours, I added null checks and breakpoints everywhere. I could not find the source of the breakage. So then I swapped out most of my code for a line by line copy of the CommonsWare Camera example. The main difference is that my version was in a Fragment instead of an activity.
I understood most(if not all) of it while re-implementing it, and made it fit my current fragment based system. While it did not fix my bug, after a while I discovered that moving my SurfaceView above my ImageView worked. However, it did not provide the intended overlay effect as the frame was now effectively over the surface.
...Until I found that I had set the fragment container to a Hardware layer and forgot to return it to normal.
Beware this line:
findViewById(R.id.fragment_container).setLayerType(View.LAYER_TYPE_HARDWARE, null);
It messes with camera rendering.
Hopefully this helps some other poor soul.
I need help to place a video at an arbitrary point on a playfield.
I am porting a game which takes place on a playfield - background with animated sprites superimposed. It's working fine.
The activity does a
// Set full screen view
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
Off that, I run a View on which all the action takes place. The playfield adjusts in size and offset, depending on screen size and orientation. All that's working fine, and I scale the sprites and their positions accordingly.
But sometimes, I need to place a borderless video on top of an existing background at various specific points in the playfield, and everything I read in stackoverflow is about the video itself and not how to position it. Can anyone help? Where should I start looking?
Ah... It appears that I wanted AbsoluteLayout, which became deprecated in 2009. There is, however, more than one way to skin a cat. I just have to work a bit harder.
I am trying to build a Media Player. I have all the code for music playback. And the GUI is made up of 3 main parts:-
A blue background.
A JList with JScrollPane
A JLayer Shell (with a polygon cut out to reveal the list and blue background beneath it.)
So my question is how can I create a custom list or JTable that is slightly rotated with the base of the component stretched out on both corners (using a perspective filter). Also the JScrollbar attached must be customized also. I guess at least it needs to be rotated. But would like to know how to make one by supplying my own graphics. Is this possible?
Here is a MOCKUP of the design:
http://www.splashportal.net/MOCKUP/iJuk-MOCKUP.swf
Here is a Screenshot of it:
You can transform a view component, as shown here, but mouse interaction is effectively impossible without re-writing the UI delegate. Alternatively, you may be able to adapt the approach shown here that uses an inverse transform to effect mouse control.
I have used SurfaceView in my game. Right Now, I have created layout considering one device (320 x 480). The game layout looks nice and all functions are working properly. But when I see the same game in another device with different dimension (screen size), the layout does not seem to be proper.
So is there any property, method, formula or helping Tutorial by which I can create game design/layout through canvas which looks same in all screen size devices.
There is one simple hint: don't ever use absolute coordinates on the SurfaceView. Every item's position should be calculated at runtime depending on the actual screen size. This way you'll achieve a layout that will look the same way on every device. Hope this helps.
I am looking for ways to zoom in a Java Swing application. That means that I would like to resize all components in a given JPanel by a given factor as if I would take an screenshot of the UI and just applied an "Image scale" operation. The font size as well as the size of checkboxes, textboxes, cursors etc. has to be adjusted.
It is possible to scale a component by applying transforms to a graphics object:
protected Graphics getComponentGraphics(Graphics g) {
Graphics2D g2d=(Graphics2D)g;
g2d.scale(2, 2);
return super.getComponentGraphics(g2d);
}
That works as long as you don't care about self-updating components. If you have a textbox in your application this approach ceases to work since the textbox updates itself every second to show the (blinking) cursor. And since it doesn't use the modified graphics object this time the component appears at the old location. Is there a possibility to change a components graphics object permanently? There is also a problem with the mouse click event handlers.
The other possibility would be to resize all child components of the JPanel (setPreferredSize) to a new size. That doesn't work for checkboxes since the displayed picture of the checkbox doesn't change its size.
I also thought of programming my own layout manager but I don't think that this will work since layout managers only change the position (and size) of objects but are not able to zoom into checkboxes (see previous paragraph). Or am I wrong with this hypothesis?
Do you have any ideas how one could achieve a zoomable Swing GUI without programming custom components? I looked for rotatable user interfaces because the problem seems familiar but I also didn't find any satisfying solution to this problem.
Thanks for your help,
Chris
You could give a try to the JXLayer library.
There are several tools in it, which could help you to make a zoom. Check the examples shown here. I would recommend you to read more about the TransformUI, from this library. From the example, it seems like it could help solving your problem.
Scaling the view is easy enough; transforming mouse coordinates is only slightly more difficult. Here's an elementary example. I'd keep JComponents out, although it might make sense to develop an analogous ScaledComponent that knows about the geometry. That's where #Gnoupi's suggestion of using a library comes in.
hey you can try this if you want to zoom a image like any other image viewer the use a JPanel draw an image using drawImage() method now create a button and when you click the button increase the size of the panel on the frame it appears as if the image is being viewed in Zoom
You might find Piccolo2D.java API useful: http://code.google.com/p/piccolo2d/
It is very simple.
It touts in particular its smooth zooming. You essentially make a "canvas" that can contain various elements, and can then zoom by just holding right-click and panning the mouse back and forth.
I worked on a team that used it to create this: http://sourceforge.net/apps/mediawiki/guitar/index.php?title=WebGuitar#EFG.2FGUI_Visualizer
The nodes you see there are clickable links themselves.
Since Java 9, there are VM arguments (actually meant to be used for high dpi scaling) that can render a application with a higher scaling factor:
java -Dsun.java2d.uiScale=2.0 -jar MyApplication.jar
Or:
java -Dsun.java2d.win.uiScaleX=2.0 -Dsun.java2d.win.uiScaleY=2.0 -jar MyApplication.jar