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1
11 package org.eclipse.pde.internal.ui.util;
12
13 import org.eclipse.jface.resource.CompositeImageDescriptor;
14 import org.eclipse.jface.resource.ImageDescriptor;
15 import org.eclipse.swt.graphics.ImageData;
16 import org.eclipse.swt.graphics.Point;
17
18
21 public abstract class AbstractOverlayIcon extends CompositeImageDescriptor {
22
23 static final int DEFAULT_WIDTH = 16;
24 static final int DEFAULT_HEIGHT = 16;
25
26 private Point fSize = null;
27
28 private ImageDescriptor fOverlays[][];
29
30 public AbstractOverlayIcon(ImageDescriptor[][] overlays) {
31 this(overlays, null);
32 }
33
34 public AbstractOverlayIcon(ImageDescriptor[][] overlays, Point size) {
35 fOverlays = overlays;
36 if (size != null)
37 fSize = size;
38 else
39 fSize = new Point(DEFAULT_WIDTH, DEFAULT_HEIGHT);
40 }
41 protected void drawBottomLeft(ImageDescriptor[] overlays) {
42 if (overlays == null)
43 return;
44 int length = overlays.length;
45 int x = 0;
46 for (int i = 0; i < 3; i++) {
47 if (i < length && overlays[i] != null) {
48 ImageData id = overlays[i].getImageData();
49 drawImage(id, x, getSize().y - id.height);
50 x += id.width;
51 }
52 }
53 }
54 protected void drawBottomRight(ImageDescriptor[] overlays) {
55 if (overlays == null)
56 return;
57 int length = overlays.length;
58 int x = getSize().x;
59 for (int i = 2; i >= 0; i--) {
60 if (i < length && overlays[i] != null) {
61 ImageData id = overlays[i].getImageData();
62 x -= id.width;
63 drawImage(id, x, getSize().y - id.height);
64 }
65 }
66 }
67
68 protected abstract ImageData getBaseImageData();
69
70 protected void drawCompositeImage(int width, int height) {
71 ImageData base = getBaseImageData();
72 drawImage(base, 0, 0);
73 if (fOverlays != null) {
74 if (fOverlays.length > 0)
75 drawTopRight(fOverlays[0]);
76
77 if (fOverlays.length > 1)
78 drawBottomRight(fOverlays[1]);
79
80 if (fOverlays.length > 2)
81 drawBottomLeft(fOverlays[2]);
82
83 if (fOverlays.length > 3)
84 drawTopLeft(fOverlays[3]);
85 }
86 }
87 protected void drawTopLeft(ImageDescriptor[] overlays) {
88 if (overlays == null)
89 return;
90 int length = overlays.length;
91 int x = 0;
92 for (int i = 0; i < 3; i++) {
93 if (i < length && overlays[i] != null) {
94 ImageData id = overlays[i].getImageData();
95 drawImage(id, x, 0);
96 x += id.width;
97 }
98 }
99 }
100 protected void drawTopRight(ImageDescriptor[] overlays) {
101 if (overlays == null)
102 return;
103 int length = overlays.length;
104 int x = getSize().x;
105 for (int i = 2; i >= 0; i--) {
106 if (i < length && overlays[i] != null) {
107 ImageData id = overlays[i].getImageData();
108 x -= id.width;
109 drawImage(id, x, 0);
110 }
111 }
112 }
113
114 protected Point getSize() {
115 return fSize;
116 }
117 }
118 |
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