I've created an app with a small window (the size of a combo box). I need to create a floating panel that sits outside the window, next to the selected item in a JComboBox. (See attached image).
I've been reading about the JComboBox.setRenderer(customRenderer) etc. But was just wondering before I go down this path, whether it is at all possible to render something outside the window. I suspect it is, as the combobox itself manages to render it's popup list outside the window.
I'm very new to Swing, so any advice would be appreciated.
It's not possible with the custom renderer since Swing components are light weight. That is, Java is given a native window and all the component drawing takes place in that window. In your case, that is the JFrame containing the combo box.
What you can do though is create a new undecorated window and set it's location accordingly and draw whatever you want inside it.
EDIT: When Java needs to paint outside it's window bounds (like the case of pop up messages or combo boxes drop downs) if the component falls inside the bounds it uses the swing light weight mechanism. But if the component falls out side the bounds it is automatically substituted with a awt heavy weight component that has it's own native drawing surface outside the active window.
I've implemented similar idea using combobox renderers and tooltips on them. Content of every item's tooltip can be customized and rendered using HTML. Location of the tooltip can be set outside of the item itself thus creating design very similar to the one presented in your question.
Here is the starting point for you:
http://www.java2s.com/Code/Java/Swing-Components/ToolTipComboBoxExample.htm
Related
I have an open-source java swing application like this:
http://i47.tinypic.com/dff4f7.jpg
You can see in the screenshot, there is a JPanel divided into two area, left and right area. The left area has many text links. When I click the SLA Criteria link, it will pop-up the SLA Criteria window. The pop-up window is JFrame object.
Now, I'm trying to put the pop-up window into right area of the JPanel, so that means no pop-up window anymore, i.e. when I click the SLA Criteria link, its contents will be displayed at the right area of the JPanel. The existing content of the right area of JPanel will not be used anymore. The concept is just same like in the java api documentation page: http://docs.oracle.com/javase/6/docs/api. You click the link in the left frame, you'll get the content displayed at the right frame.
The example illustration is like this:
(note: it's made and edited using image editor, this is not a real screenshot of working application)
http://i48.tinypic.com/5vrxaa.jpg
So, I would like to know is there a way to put JFrame into JPanel?
I'm thinking of using JInternalFrame, is it possible? Or is there another way?
UPDATE:
Source code:
http://pastebin.com/tiqRbWP8 (VTreePanel.java, this is the panel with left & right area divisions)
http://pastebin.com/330z3yuT (CPanel.java, this is the superclass of VTreePanel and also subclass from JPanel)
http://pastebin.com/MkNsbtjh (AWindow.java, this is the pop-up window)
http://pastebin.com/2rsppQeE (CFrame.java, this is the superclass of AWindow and also subclass from JFrame)
Instead of trying to embed the frame, you want to embed the frame's content.
There is (at least) one issue I can see with this.
The menu bar is controlled by the frame's RootPane.
Create you're self a new JPanel. Set it's layout to BorderLayout.
Get the menu bar from the frame (using JFrame#getJMenuBar) and added to the north position of you new panel.
Get the frames ContentPane and add it to the center position of the panel.
There is undoubtedly countless other, application specific issues you will run into trying to do this...
No, you don't want to "put a JFrame into a JPanel" and your illustration above doesn't demonstrate this either. Instead it's showing a subordinate window on top of (not inside of) another window. If you absolutely need to display a new subordinate window, I'd recommend that you create and display a JDialog. The tutorials will explain how to do this, or if you get stuck post your code attempt and we'll help you work with this.
Edit 1
You state:
I need to convert from the pop-up window style into the jpanel content style. It's just like the java api documentation page style: docs.oracle.com/javase/6/docs/api When you click the text in left frame, it doesn't show any pop-up, right? The content is displayed at right frame directly. So that's basicly my goal. The source code is quite big. I will try to paste the source code if possible.
What you are looking for is to simply implement a MouseListener in a JList or JTable, and when responding to the click get the content based on the selection made. This has nothing to do with placing a JFrame in a JPanel and all to do with writing the correct program logic. Again, display it in a modal JDialog -- but that's all secondary to your writing the correct non-GUI logic. You're really barking up the wrong tree here. Forget about JFrames, forget about JPanels for the moment and instead concentrate on how you're going to extract the SLA Criteria data when it is clicked on.
Edit 2
I think I see what you're trying to do -- instead of JFrames and JDialogs, use JPanels and swap them using a CardLayout which would allow you to swap views.
I had skimming the source codes, I saw that the AWindow.java has internal panel (APanel.java) to hold the window's content, and it also has a public method to return the content panel object (getAPanel()). With this, I can use it for fetching the window's contents into other container.
Finally, I decided to use JTabbedPane in the right area of VTreePanel for displaying the pop-up window's contents.
You cannot put a Jframe into a JPanel. Instead you should try to create a separate panel that has functionalities like your JFrame and embed that into your JPanel.
Since you can put a JPanel into another JPanel but not a JFrame into another JPanel
I am trying to recreate the Skype handles instant messaging using Swing components. I am using JList with a custom ListCellRenderer to render each cell in the list. The ListCellRenderer extends a JPanel, the JPanel simply contains a label (where I will put the username) and a JTextArea which is where the users' messages will go. The JTextArea is what Im having problems with.
Here's an image of what I have a the moment -
Ive removed the scrollpane that automatically comes with the textarea in netbeans.
I am showing the Navigator, the Design view and the actual program (the list has two elements) in this image.
The the text in textarea is actually much longer than in this image but it is not word wrapping. I have set lineWrap and wrapStyleWord to true in the properties box for this textarea but it doesn't seem to take any effect. I then tried to set maximum size using the properties box and that doesn't have any effect either.
Is there any way to control the padding/margins around components with netbeans gui designer. The automatic placement it gives me for spacing between components is either several pixels too small or two large. I need exact placement on the list's cell components.
For reference here is how skype's convesation panel looks (ive added in the red "Brian cs"'s as thats how I will be doing it in my program). As you can see the sentences wrap and there is an appropriate amount of space between cells. So anyone know how to achieve this using Swing?
The JTextarea is not the problem. The JList sets the heigth for each row. See JList.setFixedCellHeigth or setPrototypeCellValue
i'm looking for this effect, but PulpCore doen't works with swing. Do you know what library use, or how to make a TileMap? Also, I'd like to move forever in it.
Thanks.
I'm guessing you don't want to use an actual world-map implementation like JXMapViewer...
The basic functionality appears to be: click on some coordinates, and that point becomes centered in the viewport. One fairly simple way to do this is to have the component(s) that you want to view all contained within a JPanel and have that panel inside a JScrollPane with its scrollbars turned off (setHorizontalScrollbarPolicy(HORIZONTAL_SCROLLBAR_NEVER) and so on). Then, set up a click or action listener for your elements that calculates the new center point, what the new viewport rectangle coordinates will be, and use scrollRectToVisible on the panel to shift the view. For animation, you can use a Swing Timer to set up a series of incremental scrolls in the required direction until you reach the target.
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.
The code pretty huge and involves a lot of different class/methods:
But here is the gist:
There is a main frame : A_Main
Selecting something in the main frame A: opens a JDialog B_Dialog
This B_Dialog has a JPanel on it: C_Panel
This C_Panel comprises of a textfield and a button
On clicking on the textfield/button: opens a tooltip and another JPanel: D_Panel
Now, the problem is:
1) The tooltip overflows the size of B_Dialog and therefore gets truncated
2) D_Panel however; even if its outside the boundary of B_Dialog gets displayed fully
2.1) There are some texfields and drop down menus in this D_Panel
2.2) The mouse events function correctly in this D_Panel items (drop down menus)
2.3) But Keyboard events do not function correct (Textfield)
I would be glad if you could help!
Thanks!
This can only be done in newer versions of the JDK.
See, Mixing Heavyweight and Lightweight Components.
Now, when I try to enter something in the JAR JPanel's text field, I am not able to do so as this pops out of the border of the main JDialog that contains it.
Add a JScrollPane around the JPanel, and allow it to expand both horizontally and vertically. If this doesn't work, you may need a customized Layout Manager, or use one of the default ones like GridBagLayout.
Also, you'll need to gain focus before you can enter text, but that doesn't seem to be the problem here.