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