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11 package org.eclipse.ui.internal.forms.widgets;
12
13 import java.util.Hashtable  ;
14
15 import org.eclipse.swt.graphics.Color;
16 import org.eclipse.swt.graphics.GC;
17 import org.eclipse.swt.graphics.Image;
18 import org.eclipse.swt.graphics.Point;
19 import org.eclipse.swt.graphics.Rectangle;
20
21 public class BulletParagraph extends Paragraph {
22 public static final int CIRCLE = 1;
23
24 public static final int TEXT = 2;
25
26 public static final int IMAGE = 3;
27
28 private int style = CIRCLE;
29
30 private String text;
31
32 private int CIRCLE_DIAM = 5;
33
34 private int SPACING = 10;
35
36 private int indent = -1;
37
38 private int bindent = -1;
39
40 private Rectangle bbounds;
41
42
47 public BulletParagraph(boolean addVerticalSpace) {
48 super(addVerticalSpace);
49 }
50
51 public int getIndent() {
52 int ivalue = indent;
53 if (ivalue != -1)
54 return ivalue;
55 switch (style) {
56 case CIRCLE:
57 ivalue = CIRCLE_DIAM + SPACING;
58 break;
59 default:
60 ivalue = 20;
61 break;
62 }
63 return getBulletIndent() + ivalue;
64 }
65
66 public int getBulletIndent() {
67 if (bindent != -1)
68 return bindent;
69 return 0;
70 }
71
72
75 public int getBulletStyle() {
76 return style;
77 }
78
79 public void setBulletStyle(int style) {
80 this.style = style;
81 }
82
83 public void setBulletText(String text) {
84 this.text = text;
85 }
86
87 public void setIndent(int indent) {
88 this.indent = indent;
89 }
90
91 public void setBulletIndent(int bindent) {
92 this.bindent = bindent;
93 }
94
95
98 public String getBulletText() {
99 return text;
100 }
101
102 public void layout(GC gc, int width, Locator loc, int lineHeight,
103 Hashtable resourceTable, IHyperlinkSegment selectedLink) {
104 computeRowHeights(gc, width, loc, lineHeight, resourceTable);
105 layoutBullet(gc, loc, lineHeight, resourceTable);
106 super.layout(gc, width, loc, lineHeight, resourceTable, selectedLink);
107 }
108
109 public void paint(GC gc, Rectangle repaintRegion,
110 Hashtable resourceTable, IHyperlinkSegment selectedLink,
111 SelectionData selData) {
112 paintBullet(gc, repaintRegion, resourceTable);
113 super.paint(gc, repaintRegion, resourceTable, selectedLink, selData);
114 }
115
116 private void layoutBullet(GC gc, Locator loc, int lineHeight,
117 Hashtable resourceTable) {
118 int x = loc.x - getIndent() + getBulletIndent();
119 int rowHeight = ((int[]) loc.heights.get(0))[0];
120 if (style == CIRCLE) {
121 int y = loc.y + rowHeight / 2 - CIRCLE_DIAM / 2;
122 bbounds = new Rectangle(x, y, CIRCLE_DIAM, CIRCLE_DIAM);
123 } else if (style == TEXT && text != null) {
124 Point textSize = gc.textExtent(text);
126 bbounds = new Rectangle(x, loc.y, textSize.x, textSize.y);
127 } else if (style == IMAGE && text != null) {
128 Image image = (Image) resourceTable.get(text);
129 if (image != null) {
130 Rectangle ibounds = image.getBounds();
131 int y = loc.y + rowHeight / 2 - ibounds.height / 2;
132 bbounds = new Rectangle(x, y, ibounds.width, ibounds.height);
133 }
134 }
135 }
136
137 public void paintBullet(GC gc, Rectangle repaintRegion,
138 Hashtable resourceTable) {
139 if (bbounds == null)
140 return;
141 int x = bbounds.x;
142 int y = bbounds.y;
143 if (repaintRegion != null) {
144 x -= repaintRegion.x;
145 y -= repaintRegion.y;
146 }
147 if (style == CIRCLE) {
148 Color bg = gc.getBackground();
149 Color fg = gc.getForeground();
150 gc.setBackground(fg);
151 gc.fillRectangle(x, y + 1, 5, 3);
152 gc.fillRectangle(x + 1, y, 3, 5);
153 gc.setBackground(bg);
154 } else if (style == TEXT && text != null) {
155 gc.drawText(text, x, y);
156 } else if (style == IMAGE && text != null) {
157 Image image = (Image) resourceTable.get(text);
158 if (image != null)
159 gc.drawImage(image, x, y);
160 }
161 }
162 }
163 |
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