paint

问题 So I'm moving an image in Java2D and it bounces aswell. For some reason, it always leaves behind a trail of old images. How could I fix this? Main class: package org.main.graphics; import java.awt.Graphics; import java.io.IOException; import java.util.ArrayList; import java.util.List; import javax.swing.JFrame; import org.main.entity.Entity; import org.main.entity.Loael; @SuppressWarnings("serial") public class GameWindow extends JFrame implements Runnable { private List<Entity> entities =

问题 I am trying to have a background image draw then have a character draw over it. My code was working until I added sleep do I didn't get 1500 fps. package sylvyrfysh.screen; import javax.swing.*; import java.awt.*; import game.infos.Information; public class ImageLoadDraw extends JFrame{ /** * */ private static final long serialVersionUID = 1L; public static void main(){ DisplayMode dm=new DisplayMode(Information.sX,Information.sY,16,DisplayMode.REFRESH_RATE_UNKNOWN); ImageLoadDraw i = new

问题 I am working with an application that is experiencing painting issues on some users computers when the mouse passes over the tabs in a JTabbedPane. They also occasionally have similar issues on other interactive components like JButtons. I have only ever seen this error occur on mouse overs. The application is being run with 1.6.0_20 and I have already tried the flag recommended in update 10 in case it was an issue with D3D (-Dsun.java2d.d3d=false). Since I am a new user I cannot post a

问题 i want to blur particular area on image view. eg. i want to allow user to draw rectangle similar to crop in android, once user draws that rectangle on image, the area inside rectangle will be blurred or on finger touch. i searched a lot,but most of the examples explain how to blur full image, dint find any tutorial or link that explains about blurring only some part of an image. any help will be really appreciated. 回答1: There's nothing easier! But you can only pixelate it, select the targeted

问题 I know this question has been asked a million times, and can be done by overriding paintComponent() , but what I want to know is how to change the shape while respecting the current Look And Feel. If I want to change the shape to a circle, I also want the button to look like a button, just with a different shape. I tried making a JButton, the overriding paintComponent , then clipping it to a circle, but I didn't get the border effects on Nimbus LAF . Is there a better way? Or is there a

问题 I have written a UserControl that behaves like a ContainerControl , but is totally painted by WindowsForms (I inherit from UserControl ) I would like to avoid painting the control while I'm filling it, so I would need to write something similar to BeginUpdate() - EndUpdate() . This is easy to do when the control is user-painted, but in this case I'm not sure about how to proceed. 回答1: You could make use of Suspend/Resume layout. e.g. private void BeginUpdate() { this.SuspendLayout(); // Do

问题 What is the simplest way to draw in Java? import java.awt.*; import javax.swing.*; public class Canvas { private JFrame frame; private Graphics2D graphic; private JPanel canvas; public Canvas() { frame = new JFrame("A title"); canvas = new JPanel(); frame.setContentPane(canvas); frame.pack(); frame.setVisible(true); } public void paint(Graphics g){ BufferedImage offImg = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Grapics2D g2 = offImg.createGraphics(); g2.setColor(new Color

问题 i draw 4 lines (canvas.drawLine) in order to draw a rectangle. Is there any possibility to fill the area of the rectangle? (I know that android have a rectDraw. Mine is only curiosity) thanks in advance. ok.. I ve also a path created a path segment. Following the code.. Please can u explain how fill the internal area? `Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); paint.setStrokeWidth(2); paint.setColor(android.graphics.Color.RED); paint.setStyle(Paint.Style.FILL_AND_STROKE); paint

问题 Have a very simple issue which I haven't come across before. I used a similar layout before when doing a project. import javax.swing.*; import java.awt.*; import java.awt.event.*; class q1 { public static void main (String Args []) { q1Window showMe = new q1Window(); } } class q1Window { q1Window() { JFrame window = new JFrame("Tutorial 1"); window.setSize(600,600); window.setVisible(true); window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public void paint (Graphics back) { back

问题 I see my version of delphi, doesn't have Key Events(OnKeyDown, OnKeyUp, OnKeyPress) events for TPaintBox. I would like to process something like that. Had somebody a paintbox with these events? 回答1: Like TLama said, you'll need to inherit from TCustomControl. But you'll need some additional code to publish all keyboard events. You could choose the easy way and inherit from TPanel since TPanel already exposes a Canvas and a number of keyboard events. But here's some code to show how to create