This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I'm trying to draw a circle on a JPanel that will be added and I need to draw it based on a certain percentage. If I pass a "parent" value of 100 (which is largest number of a circle) and a child value of 50 then circle needs to be 1/2 the size (in area) of the parent. The way I was going to do it was to determine the area I was dealing with (I'll be adding labels and such below this panel within the JFrame). I need to have the circle display proportional to a value passed in. Any ideas on how to accomplish this otherwise? I'm open to ideas. Thanks for the posts.
Add you label to the NORTH of a BorderLayout and the custom panel to the CENTER. All the extra space will go to the CENTER. The size of the component is known in the paintComponent() method. Since you should be drawing the circle in the paintComponent() method there shold be no problem to do what you want.