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11 package org.eclipse.ui.internal;
12
13 import org.eclipse.jface.util.Geometry;
14 import org.eclipse.swt.SWT;
15 import org.eclipse.swt.events.PaintEvent;
16 import org.eclipse.swt.events.PaintListener;
17 import org.eclipse.swt.graphics.Color;
18 import org.eclipse.swt.graphics.GC;
19 import org.eclipse.swt.graphics.Point;
20 import org.eclipse.swt.graphics.Rectangle;
21 import org.eclipse.swt.widgets.Composite;
22
23 public class OvalComposite extends Composite implements PaintListener {
24
25 static final int[] TOP_LEFT_CORNER = new int[] { 0, 2, 1, 1, 2, 0 };
26
27 private int orientation;
28 private Color interiorColor;
29
30 public OvalComposite(Composite parent, int orientation) {
31 super(parent, SWT.NONE);
32
33 addPaintListener(this);
34 this.orientation = orientation;
35 }
36
37 public void setOrientation(int orientation) {
38 this.orientation = orientation;
39 redraw();
40 }
41
42 public void paintControl(PaintEvent e) {
43 GC gc = e.gc;
44 Color color = e.display.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW);
45 gc.setForeground(color);
46 if (interiorColor != null) {
47 gc.setBackground(interiorColor);
48 }
49
50 Shape shape = new Shape(TOP_LEFT_CORNER.length + 2);
51
52 IntAffineMatrix rotation = IntAffineMatrix
53 .getRotation(orientation);
54
55 rotation = rotation.multiply(IntAffineMatrix.ROT_180);
56
57 Point size = getSize();
58
59 if (!Geometry.isHorizontal(orientation)) {
60 Geometry.flipXY(size);
61 }
62
63 shape.add(0, size.y);
64 shape.add(new Shape(TOP_LEFT_CORNER));
65 shape.add(IntAffineMatrix.translation(size.x - 3, 0).multiply(IntAffineMatrix.FLIP_YAXIS),
66 shape.reverse());
67
68 Point rawSize = getSize();
69 Point adjust = new Point(0,0);
70 switch(orientation) {
71 case SWT.TOP: adjust = rawSize; break;
72 case SWT.LEFT: adjust = new Point(rawSize.x - 1, 0); break;
73 case SWT.RIGHT: adjust = new Point(0, rawSize.y - 3); break;
74 }
75
76 Shape targetShape = IntAffineMatrix.translation(adjust.x, adjust.y)
77 .multiply(rotation)
78 .transform(shape);
79
80 int[] shapeArray = targetShape.getData();
81 if (interiorColor != null) {
82 gc.fillPolygon(shapeArray);
83 }
84 gc.drawPolyline(shapeArray);
85 }
86
87 public Rectangle getClientArea() {
88 Rectangle result = Geometry.copy(super.getClientArea());
89
90 if (Geometry.isHorizontal(orientation)) {
91 Geometry.expand(result, -6, -6, orientation == SWT.BOTTOM ? -1 : 0, orientation == SWT.TOP ? -1 : 0);
92 } else {
93 Geometry.expand(result, orientation == SWT.RIGHT ? -1 : 0, orientation == SWT.LEFT ? -1 : 0, -6, -6);
94 }
95
96 return result;
97 }
98
99 public Rectangle computeTrim(int x, int y, int width, int height) {
100 Rectangle result = Geometry.copy(super.computeTrim(x, y, width, height));
101
102 if (Geometry.isHorizontal(orientation)) {
103 Geometry.expand(result, 6, 6, orientation == SWT.BOTTOM ? 1 : 0, orientation == SWT.TOP ? 1 : 0);
104 } else {
105 Geometry.expand(result, orientation == SWT.RIGHT ? 1 : 0, orientation == SWT.LEFT ? 1 : 0, 6, 6);
106 }
107
108 return result;
109 }
110
111
114 public Color getInteriorColor() {
115 return interiorColor;
116 }
117
118
121 public void setInteriorColor(Color interiorColor) {
122 this.interiorColor = interiorColor;
123 }
124 }
125 |
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