Solutions to selected exercises - An Introduction to Graphical User Interfaces with Java Swing - page 286

6.

// left corner of the black rectangle to

7.

// be only at:

8.

// 0/stepNo, 1/stepNo,...,allowedMax/stepNo

9.

// of the current width or height of the panel.

10.

// With the choice below this is

11.

// 0/9, 1/9, 2/9, 3/9, 4/9, 5/9, and 6/9 .

12.
13.

private static final int stepNo = 9;

14.

private static final int allowedMax = 6;

15.
16.

// The next variable specifies the length and

17.

// height of the black rectangle as a number

18.

// of steps. Here we take 3 .

19.
20.

private static final int blackRectSteps = 3;

21.
22.

// The next two variables contain the

23. // current position of the black rectangle

24. // (in fractions of the current width and height

25. // of the panel) .

26.
27.
28.

private int upperLeftX, upperLeftY;

29.
30.

public PositionModel( int x, int y) {

31.

upperLeftX = x;

32.

upperLeftY = y;

33.

}

34.
35.
36.

public int getXInSteps(){

37.

return (upperLeftX);

38.

}

39.
40.

public int getYInSteps(){

41.

return (upperLeftY);

42. }

43.
44.

public int getNoOfSteps(){

45. return (stepNo);

46. }

47. public int getBlackSizeInSteps(){

48. return (blackRectSteps);

49. }

50.
51.