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1
11 package org.eclipse.ui.internal.forms.widgets;
12
13 import java.util.Hashtable  ;
14
15 import org.eclipse.swt.graphics.*;
16
17
21 public class ImageSegment extends ObjectSegment {
22 public static final String SEL_IMAGE_PREFIX = "isel.";
24 public Image getImage(Hashtable objectTable) {
25 return getImage(getObjectId(), objectTable);
26 }
27
28 private Image getImage(String key, Hashtable objectTable) {
29 if (key == null)
30 return null;
31 Object obj = objectTable.get(key);
32 if (obj == null)
33 return null;
34 if (obj instanceof Image)
35 return (Image) obj;
36 return null;
37 }
38
39 private Image getSelectedImage(Hashtable objectTable, SelectionData selData) {
40 String key = SEL_IMAGE_PREFIX + getObjectId();
41 Image image = getImage(key, objectTable);
42 if (image==null) {
43 image = FormUtil.createAlphaMashImage(selData.display, getImage(objectTable));
44 if (image!=null)
45 objectTable.put(key, image);
46 }
47 return image;
48 }
49
56
57 public void paint(GC gc, boolean hover, Hashtable resourceTable, boolean selected, SelectionData selData, Rectangle repaintRegion) {
58 Image image = getImage(resourceTable);
59 int iwidth = 0;
60 int iheight = 0;
61 if (image != null) {
62 Rectangle rect = image.getBounds();
63 iwidth = rect.width + (isSelectable()?2:0);
64 iheight = rect.height + (isSelectable()?2:0);
65 } else
66 return;
67 Rectangle bounds = getBounds();
68 int ix = bounds.x+(isSelectable()?1:0);
69 int iy = bounds.y+(isSelectable()?1:0);
70
71 if (selData != null) {
72 int leftOffset = selData.getLeftOffset(bounds.height);
73 int rightOffset = selData.getRightOffset(bounds.height);
74 boolean firstRow = selData.isFirstSelectionRow(bounds.y,
75 bounds.height);
76 boolean lastRow = selData.isLastSelectionRow(bounds.y,
77 bounds.height);
78 boolean selectedRow = selData
79 .isSelectedRow(bounds.y, bounds.height);
80 if (selectedRow) {
81 if ((firstRow && leftOffset > ix) ||
82 (lastRow && rightOffset < ix + iwidth/2)) {
83 drawClipImage(gc, image, ix, iy, repaintRegion);
84 }
85 else {
86 Color savedBg = gc.getBackground();
87 gc.setBackground(selData.bg);
88 int sx = ix;
89 int sy = iy;
90 if (repaintRegion!=null) {
91 sx -= repaintRegion.x;
92 sy -= repaintRegion.y;
93 }
94 gc.fillRectangle(sx, sy, iwidth, iheight);
95 Image selImage = getSelectedImage(resourceTable, selData);
96 gc.drawImage(selImage, sx, sy);
97 gc.setBackground(savedBg);
98 }
99 }
100 else
101 drawClipImage(gc, image, ix, iy, repaintRegion);
102 } else
103 drawClipImage(gc, image, ix, iy, repaintRegion);
104 if (selected) {
105 int fx = bounds.x;
106 int fy = bounds.y;
107 if (repaintRegion!=null) {
108 fx -= repaintRegion.x;
109 fy -= repaintRegion.y;
110 }
111 Color fg = gc.getForeground();
112 gc.setForeground(gc.getBackground());
113 gc.drawRectangle(bounds.x, bounds.y, bounds.width - 1,
116 bounds.height - 1);
117 gc.setForeground(fg);
118 gc.drawFocus(fx, fy, bounds.width, bounds.height);
119 }
120 }
121 private void drawClipImage(GC gc, Image image, int ix, int iy, Rectangle repaintRegion) {
122 if (repaintRegion!=null) {
123 ix -= repaintRegion.x;
124 iy -= repaintRegion.y;
125 }
126 gc.drawImage(image, ix, iy);
127 }
128
129 protected Point getObjectSize(Hashtable resourceTable, int wHint) {
130 Image image = getImage(resourceTable);
131 if (image==null)
132 return new Point(0, 0);
133 Rectangle ibounds = image.getBounds();
134 return new Point(ibounds.width, ibounds.height);
135 }
136 }
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