I have stepped in working with Java 2D and initially i have been stucked how to shift my drawing location after Title Bar.
If i start drawing x,y (0,0). my Shapes are that is under Title bar hides.
Wha tis the best way to set the Drawing Location after Title Bar.
It sounds like you've overridden paint on a top level container, like JFrame? This is your problem. A JFrame's decoration is actually painted inside the window.
You should create a custom component, say from JPanel for example, override it's paintComponent method and perform your custom painting there.
You can then add this to your frame or replace the frames content pane.
Take a closer look at Performing Custom Painting
You can to a look at
How to get the EXACT middle of a screen, even when re-sized
Graphics rendering in title bar
How can I set in the midst?
For more examples...
Related
I am working with Java 2D graphics and having an issue.
I have a JPanel onto which I draw some images and also moving images with a Timer into the circles.
*Initially I draw the interface in paint() method. and upon button click I read data from file and then calling a function to display those images and strings in a timed controlled function.
* The issue is, My Drawing screen showing overlapping images, If I call repaint(), the screen start flicking.
I need help with adding the basic drawing as an image in the background Panel and then runtime drawing onto another overlapped but transparent panel so if I call repaint() screen behaves normally and no flickering occurs. I am attaching screenshots of the scenario.
Could anybody suggest how to add two panel so one serves a background and other works like runtime drawing onto background image panel?
I'm hope that there is swing.JPanel not awt.Panel, then to use paintComponent instead of paint
there are four ways
add any drawString or subImage/Image inside paintComponent(), prepare those Objects as local variable, inside paintComponent() only use value from these variables or loop inside prepared arrays of Objects
add JLabels (transparent, non_opaque by defaulr) with Icons/ImageIcons with text to JLabel, required to add grid of JLabels to JPanel, and on runtime to setIcon/setText to desired JLabel(s)
put JLabels to GlassPane, with rest to see in point 2nd
put JLabels to JLayer, with rest to see in point 2nd
I need to layer JPanels but I don't know how. I have 3 panels, the first is for the background, the second is for a Character/Sprite to move around and layers the first panel(background, and the third is a bar off to the side (Used for buttons and has nothing to do with they layers). How do I layer panel 1 and panel 2?
edit: The background is made up of a grid of 25x25 labels with an icon in each.
Some options:
Use a JLayeredPane which can layer components using a z-order Integer constant. Remember that when doing this, you are also essentially using a null layout, and so you will be fully responsible for setting the size and position of all components added to the JLayeredPane.
If all the background is doing is painting an image, you could use a single JPanel, and then simply paint the image as a BufferedImage that is displayed in the JPanel's paintComponent method. The sprite would also be painted but its location would vary.
See How to Use Layered Panes.
Don't forget to use:
panel.setOpaque(false);
Or you don't need to layer panels. You can just paint a background image on the panel. See Background Panel for an example of this.
We just recently worked on a top-down video game for my CSC class. All we did was draw the background and then all the sprites after it in the paint() method on the JPanel. We also used a Timer and an ActionListener to constantly update the JPanel.
I'm building a domino game in java and I am using modified rectangle2d's to draw my tiles. To drag a tile I use mouse events to change the tiles coordinates and redraw the JPanel.
This all works great and very smooth, until I start using the frames glassPane, I use the glassPane to be able to drag a tile from one JPanel to another.
It works, but rendering is quite slow when I paint on the glassPane. I've tried to use clipping when repainting, but it makes no difference.
Does anyone have an idea?
thnx.
It seems when a glassPane is visible on your RootPaneContainer, all repaint events behind the GlassPane have their clip set to fill the entire RootPaneContainer. This may be overriding your manually specified clip rect.
I try to create a hotspot by Extends of canvas and I try to add it on a panel which is painted by images. So I must draw an icon (image) instead of clear rectangle of the screen. To do that I override the paint method to draw the icon I want to use. So far there is no problem; the hotspot works correctly and the icon is painted in the true size I want (32 x 24 pixels).
I try to add this hotspot after painting an image on the my panel in mypanel.paint(g) that override too.
The problem is that I use a car icon that has no background! (I hope you can understand me) Just the car icon must be shown on the panel that is painted with my images.
But an unwanted rectangle is created around the icon and makes a bad view.
How I can paint my icon on the panel without that background?
Please help me.
the problem solve by using JLable component, i extends JLabeles and set an icon to it, then i add a mouse listener to get mouse clicked event and then set Hand curser to it,
so the hotspot as a true HotSpot !!
Is there any way I can print/show images on top of each other. The picture on top will always be positioned a little lower so that the one under will show partially. How can I decide which image is on top of what image? What layout lets me do this kind of positioning?
Is there any way that I can make a border appear on the image when I click it, and then move to (doesnt have to be animated, can be a "jump") where I click next inside the JFrame.
I've been trying to do this whole day now (I'm pretty new to swing), before I carry on I'd like to know if I'm trying something impossible.
So far I've been printing the images right on to the JFrame as JPanels... Inside the JPanel I add in the paintComponent(Graphics g) method: g.drawImage
Sounds like a Swing tutorial is in order.
What you're describing shouldn't be very hard. Instead of painting the images directly, load them up in ImageIcons, and pass those to JLabels. That way you can manipulate your images as JComponents, using layout managers, or direct coordinates by setting the layout to null. You can set the Z-Order with setComponentZOrder regardless of the layout you choose. You can draw borders by adding swing borders (see BorderFactory) to the JLabels. You can handle the manipulation with MouseListeners.
Look into Root Panes. You may be able to do something with the Layered Pane or the Glass Pane. I would try the Layered Pane first.