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11 package org.eclipse.ui.internal.forms.widgets;
12
13 import java.util.Hashtable  ;
14
15 import org.eclipse.swt.SWT;
16 import org.eclipse.swt.graphics.*;
17
18
19 public abstract class ObjectSegment extends ParagraphSegment {
20 public static final int TOP = 1;
21
22 public static final int MIDDLE = 2;
23
24 public static final int BOTTOM = 3;
25
26 private int alignment = BOTTOM;
27 private boolean nowrap=false;
28 private Rectangle bounds;
29 private String objectId;
30
31 public int getVerticalAlignment() {
32 return alignment;
33 }
34
35 void setVerticalAlignment(int alignment) {
36 this.alignment = alignment;
37 }
38
39 public String getObjectId() {
40 return objectId;
41 }
42
43 void setObjectId(String objectId) {
44 this.objectId = objectId;
45 }
46
47 protected abstract Point getObjectSize(Hashtable resourceTable, int wHint);
48
49 public boolean advanceLocator(GC gc, int wHint, Locator loc,
50 Hashtable objectTable, boolean computeHeightOnly) {
51 Point objectSize = getObjectSize(objectTable, wHint);
52 int iwidth = 0;
53 int iheight = 0;
54 boolean newLine = false;
55
56 if (objectSize != null) {
57 iwidth = objectSize.x + (isSelectable()?2:0);
58 iheight = objectSize.y + (isSelectable()?2:0);
59 }
60 if (wHint != SWT.DEFAULT && !nowrap && loc.x + iwidth > wHint) {
61 if (computeHeightOnly)
63 loc.collectHeights();
64 loc.x = loc.indent;
65 loc.x += iwidth;
66 loc.y += loc.rowHeight;
67 loc.width = loc.indent + iwidth;
68 loc.rowHeight = iheight;
69 loc.leading = 0;
70 newLine = true;
71 } else {
72 loc.x += iwidth;
73 loc.width += iwidth;
74 loc.rowHeight = Math.max(loc.rowHeight, iheight);
75 }
76 return newLine;
77 }
78
79 public boolean contains(int x, int y) {
80 if (bounds==null)
81 return false;
82 return bounds.contains(x, y);
83 }
84 public boolean intersects(Rectangle rect) {
85 if (bounds==null)
86 return false;
87 return bounds.intersects(rect);
88 }
89
90 public Rectangle getBounds() {
91 return bounds;
92 }
93
94 public boolean isSelectable() {
95 return false;
96 }
97
100 public boolean isNowrap() {
101 return nowrap;
102 }
103
106 public void setNowrap(boolean nowrap) {
107 this.nowrap = nowrap;
108 }
109 public void paint(GC gc, boolean hover, Hashtable resourceTable, boolean selected, SelectionData selData, Rectangle repaintRegion) {
110 }
111
112
115 public void layout(GC gc, int width, Locator loc, Hashtable resourceTable,
116 boolean selected) {
117 Point size = getObjectSize(resourceTable, width);
118
119 int objWidth = 0;
120 int objHeight = 0;
121 if (size != null) {
122 objWidth = size.x + (isSelectable()?2:0);
123 objHeight = size.y + (isSelectable()?2:0);
124 } else
125 return;
126 loc.width = objWidth;
127
128 if (!nowrap && loc.x + objWidth > width) {
129 loc.newLine();
131 loc.rowCounter++;
132 }
133 int ix = loc.x;
134 int iy = loc.y;
135
136 if (alignment==MIDDLE)
137 iy = loc.getMiddle(objHeight, false);
138 else if (alignment==BOTTOM)
139 iy = loc.getBaseline(objHeight, false);
140 loc.x += objWidth;
141 loc.rowHeight = Math.max(loc.rowHeight, objHeight);
142 bounds = new Rectangle(ix, iy, objWidth, objHeight);
143 }
144
147 public void computeSelection(GC gc, Hashtable resourceTable, SelectionData selData) {
148 }
151 }
152 |
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