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11 package org.eclipse.update.internal.ui.parts;
12
13 import org.eclipse.jface.resource.*;
14 import org.eclipse.swt.graphics.*;
15
16
19 public class OverlayIcon extends CompositeImageDescriptor {
20
21 static final int DEFAULT_WIDTH= 16;
22 static final int DEFAULT_HEIGHT= 16;
23
24 private Point fSize= null;
25
26 private ImageDescriptor fBase;
27 private ImageDescriptor fOverlays[][];
28
29 public OverlayIcon(ImageDescriptor base, ImageDescriptor[][] overlays) {
30 fBase= base;
31 if (fBase == null)
32 fBase= ImageDescriptor.getMissingImageDescriptor();
33 fOverlays= overlays;
34 fSize= new Point(DEFAULT_WIDTH, DEFAULT_HEIGHT);
35 }
36 public OverlayIcon(ImageDescriptor base, ImageDescriptor[][] overlays, Point size) {
37 fBase= base;
38 if (fBase == null)
39 fBase= ImageDescriptor.getMissingImageDescriptor();
40 fOverlays= overlays;
41 fSize= size;
42 }
43 protected void drawBottomLeft(ImageDescriptor[] overlays) {
44 if (overlays == null)
45 return;
46 int length= overlays.length;
47 int x= 0;
48 for (int i= 0; i < 3; i++) {
49 if (i < length && overlays[i] != null) {
50 ImageData id= overlays[i].getImageData();
51 drawImage(id, x, getSize().y-id.height);
52 x+= id.width;
53 }
54 }
55 }
56 protected void drawBottomRight(ImageDescriptor[] overlays) {
57 if (overlays == null)
58 return;
59 int length= overlays.length;
60 int x= getSize().x;
61 for (int i= 2; i >= 0; i--) {
62 if (i < length && overlays[i] != null) {
63 ImageData id= overlays[i].getImageData();
64 x-= id.width;
65 drawImage(id, x, getSize().y-id.height);
66 }
67 }
68 }
69 protected void drawCompositeImage(int width, int height) {
70 ImageData bg= fBase.getImageData();
71 drawImage(bg, 0, 0);
72
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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