Problem is when i create GUI in jFrame window on screen and run the program later it in full screen using
setExtendedState(MAXIMIZED_BOTH);
it do not show up like it looked in that window see the red bordered area
Components appears in one corner of screen or only at a small part in center depending upon layouts and rest is empty space like this
I want JFrame window (see the red bordered area in first image) which is showed while creating GUI to represent my whole screen so that i can know how it will look when i run it in full screen.
Change the layout manager, may be using a combination of BorderLayout and GridBagLayout
These will provide you with a means to define how the components are positioned and sized within the parent container
See Layout out components within a container for more details
Related
I'm wondering how I can add (what LayoutManager should I use) to make the app automatically adjust the components to the current size when full screen mode is enabled or even when the frame is stretched.
Currently this is what the application looks like, when you enable full screen mode the components are static.
UPDATE: I'm pasting pictures so you can get an idea of what I wrote.
Component layout in IntelliJ: layout
The current design in the small window looks ok: current design
Appearance if we enlarge the window (window zooms in, elements are static): full screen
So I'd like the components to automatically resize to the current window when fullscreen mode is enabled.
Okay. I suggest the following design:
your mainPanel, that you assigned as contentPane for your frame gets a Borderlayout.
In the North, you put a panel with a label or just a label, with Allignment X to the left.
the West gets a panel I suggest we call WestPanel and the East gets another one, which I call EastPanel.
WestPanel gets a Boxlayout or a Gridlayout. If you use Gridlayout, you can use 2 Grids wide and for each line one grid depth. You then can add all the labels in the left column and the textfields on the right.
Or you can make panels, with Borderlayout, labels to the West, textfields to the east, and pile them with emptyBorders ontop of each other. I suggest using a method for that.
The EastPabel gets a Tabbed Pane inside of it. Each tab can have its own layout manager, depending on what you want it to be in the end.
Does this help you?
let's say I want to do a program like photoshop or lightroom in java where I work with one image on the left side and I have a menu on the right side with all the options. How could I set the size of the panel where the menu is contained to scale correctly with multiple resolutions?
I was thinking on getting the current system resolution of the system (getScreenResolution()) and then multiply it by some factor like 0.3-0.2 and set that as width but I'm not sure if that works properly with higher resolutions or you would loose too much working space in the menu (I just have a small laptop to try).
I wasn't able to find any question like this, or something easier to work with the dpi in android.
I work with one image on the left side and I have a menu on the right side with all the options.
Just use a proper layout manager and let the layout manager do its job.
For example you can use a BorderLayout.
Create a panel for your menus and add that panel to the BorderLayout.LINE_END and the panel will be displayed at its preferred size.
Then create a second panel for the image and add that panel to the BorderLayout.CENTER. Now this panel will automatically be resized to fill the space as the frame is resized.
I've created an applet which has one large panel to display data surrounded by several controls (buttons, textfields, etc.). The large panel contains several layers of labels which I render myself.
The controls all have tooltips associated with them, and some of these tooltips overlap the main panel. When they disappear, they leave a hole in the main panel image until the main panel is repainted.
Now mind you, this does not always happen. It only occurs when the cursor is in a certain range. If you get far enough to either the left or right (no difference noted for changes along the Y axis), the holes are painted over when the tooltip disappears.
I'm not well-versed on how tooltips and repainting are supposed to work, and if this is a sign that there's something dreadfully wrong with my program, but if I can just call repaint on the main panel whenever the tooltip disappears, I should be fine. Is there something I can override in tooltip to make this happen?
I'm using Swing
Thanks.
To answer your question (after you found a solution by the comments): Swing has some quite elaborate repaint management built in. When a tooltip disappears, the rectangle below it is repainted.
Now, which components have to be repainted? All those who overlap with the given rectangle, and are not themselves hidden (in the region in question) by other components - but only opaque components count here. (This is the whole reason we need the opaque property on JComponent - to optimize repainting.)
Your label declared itself being opaque, but did not really paint its whole area on a paintComponent, and such the region of the tooltip which should have been covered by the label stayed unpainted.
Declaring your label to be partly transparent caused also the concerning region of the component behind it to be repainted.
I have an application that uses Swing. The display I am working on, uses a Box with a Horizontal Layout as the top container. In it, are three other boxes (which actually contain the content). The appearance to the user is a window with three panes, arranged horizontally across the screen. What I want to do is give the user the ability to change the pane sizes (the width of the panes). I tried putting the interior boxes in a JTable, that failed miserably. Any other ideas?
Thank you
Try using a nested JSplitPane.
In short, my need is to have a background Image in my java app, and upon some event, create some other graphics on top of that image.
I was thinking I would use a JPanel to draw the background image in, add it at to my JFrame the start of program, and then add other JPanels on top of that upon certain events. The problem is Swing gives the JPanels added first the highest Z index, so what should be my background is showing up on top of everything.
Is there any way to control the Z index/order of the JPanels, or am I going about this completely wrong?
You can use the setComponentZOrder() to handle Z-Order in your application.
Resources :
JavaDoc - Container.setComponentZOrder
oracle.com - Mixing heavy and light components
Sounds strange to add mutiple JPanels and use z-order. I would suggest you either simple add ONE JPanel with the paintComponent(Graphics g) method overwritten, where you draw the correct image according to your events.
Or use the CardLayout, and add JLabels (with different images), then when your event triggers, use
CardLayout cl = (CardLayout)getLayout();
cl.show(this, "card3");
to show the correct JLabel.
The JLayeredPane is designed for just this purpose. It allows you to control the Z-order of components.
I was thinking I would use a JPanel to
draw the background image in, add it
at to my JFrame the start of program,
Sounds reasonable.
and then add other JPanels on top of
that upon certain events. The problem
is Swing gives the JPanels added first
the highest Z index, so what should be
my background is showing up on top of
everything.
Adding a panel to a panel is just like adding another component to the panel. The child component will be painted on top of the parent panel. There is no need to play around with Z-Order.
The key is to set a layout manager on the panel with the image. Then each panel you add to the image panel must be made non-opaque so that the background image will be painted.
Maybe the Background Panel can help you out. It automatically makes any component added directly to the panel non-opaque.