Mercurial > projects > dwt-samples
annotate snippets/tree/Snippet226.d @ 120:1f0a7a472680
fix rm snippets from module statements.
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 20 Jul 2008 19:17:23 +0200 |
| parents | 799099686955 |
| children |
| rev | line source |
|---|---|
| 94 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2006 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * D Port: | |
| 11 * Bill Baxter <wbaxter@gmail.com> | |
| 12 *******************************************************************************/ | |
|
120
1f0a7a472680
fix rm snippets from module statements.
Frank Benoit <benoit@tionex.de>
parents:
94
diff
changeset
|
13 module tree.Snippet226; |
| 94 | 14 |
| 15 /* | |
| 16 * Tree example snippet: Draw a custom gradient selection | |
| 17 * | |
| 18 * For a list of all SWT example snippets see | |
| 19 * http://www.eclipse.org/swt/snippets/ | |
| 20 * | |
| 21 * @since 3.3 | |
| 22 */ | |
| 23 import dwt.DWT; | |
| 24 import dwt.graphics.GC; | |
| 25 import dwt.graphics.Rectangle; | |
| 26 import dwt.graphics.Region; | |
| 27 import dwt.graphics.Color; | |
| 28 import dwt.layout.FillLayout; | |
| 29 import dwt.widgets.Display; | |
| 30 import dwt.widgets.Shell; | |
| 31 import dwt.widgets.Tree; | |
| 32 import dwt.widgets.TreeItem; | |
| 33 import dwt.widgets.TreeColumn; | |
| 34 import dwt.widgets.Listener; | |
| 35 import dwt.widgets.Event; | |
| 36 | |
| 37 import tango.util.Convert; | |
| 38 | |
| 39 import dwt.dwthelper.utils; | |
| 40 | |
| 41 void main() | |
| 42 { | |
| 43 final Display display = new Display(); | |
| 44 Shell shell = new Shell(display); | |
| 45 shell.setText("Custom gradient selection for Tree"); | |
| 46 shell.setLayout(new FillLayout()); | |
| 47 final Tree tree = new Tree(shell, DWT.MULTI | DWT.FULL_SELECTION); | |
| 48 tree.setHeaderVisible(true); | |
| 49 tree.setLinesVisible(true); | |
| 50 int columnCount = 4; | |
| 51 for (int i=0; i<columnCount; i++) { | |
| 52 auto istr = to!(String)(i); | |
| 53 TreeColumn column = new TreeColumn(tree, DWT.NONE); | |
| 54 column.setText("Column " ~ istr); | |
| 55 } | |
| 56 int itemCount = 3; | |
| 57 for (int i=0; i<itemCount; i++) { | |
| 58 auto istr = to!(String)(i); | |
| 59 TreeItem item1 = new TreeItem(tree, DWT.NONE); | |
| 60 item1.setText("item "~istr); | |
| 61 for (int c=1; c < columnCount; c++) { | |
| 62 auto cstr = to!(String)(c); | |
| 63 item1.setText(c, "item ["~istr~"-"~cstr~"]"); | |
| 64 } | |
| 65 for (int j=0; j<itemCount; j++) { | |
| 66 auto jstr = to!(String)(j); | |
| 67 TreeItem item2 = new TreeItem(item1, DWT.NONE); | |
| 68 item2.setText("item ["~istr~" "~jstr~"]"); | |
| 69 for (int c=1; c<columnCount; c++) { | |
| 70 auto cstr = to!(String)(c); | |
| 71 item2.setText(c, "item ["~istr~" "~jstr~"-"~cstr~"]"); | |
| 72 } | |
| 73 for (int k=0; k<itemCount; k++) { | |
| 74 auto kstr = to!(String)(k); | |
| 75 TreeItem item3 = new TreeItem(item2, DWT.NONE); | |
| 76 item3.setText("item ["~istr~" "~jstr~" "~kstr~"]"); | |
| 77 for (int c=1; c<columnCount; c++) { | |
| 78 auto cstr = to!(String)(c); | |
| 79 item3.setText(c, "item ["~istr~" "~jstr~" "~kstr~"-"~cstr~"]"); | |
| 80 } | |
| 81 } | |
| 82 } | |
| 83 } | |
| 84 | |
| 85 /* | |
| 86 * NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly. | |
| 87 * Therefore, it is critical for performance that these methods be | |
| 88 * as efficient as possible. | |
| 89 */ | |
| 90 tree.addListener(DWT.EraseItem, new class Listener { | |
| 91 public void handleEvent(Event event) { | |
| 92 event.detail &= ~DWT.HOT; | |
| 93 if ((event.detail & DWT.SELECTED) != 0) { | |
| 94 GC gc = event.gc; | |
| 95 Rectangle area = tree.getClientArea(); | |
| 96 /* | |
| 97 * If you wish to paint the selection beyond the end of | |
| 98 * last column, you must change the clipping region. | |
| 99 */ | |
| 100 int columnCount = tree.getColumnCount(); | |
| 101 if (event.index == columnCount - 1 || columnCount == 0) { | |
| 102 int width = area.x + area.width - event.x; | |
| 103 if (width > 0) { | |
| 104 Region region = new Region(); | |
| 105 gc.getClipping(region); | |
| 106 region.add(event.x, event.y, width, event.height); | |
| 107 gc.setClipping(region); | |
| 108 region.dispose(); | |
| 109 } | |
| 110 } | |
| 111 gc.setAdvanced(true); | |
| 112 if (gc.getAdvanced()) gc.setAlpha(127); | |
| 113 Rectangle rect = event.getBounds(); | |
| 114 Color foreground = gc.getForeground(); | |
| 115 Color background = gc.getBackground(); | |
| 116 gc.setForeground(display.getSystemColor(DWT.COLOR_RED)); | |
| 117 gc.setBackground(display.getSystemColor(DWT.COLOR_LIST_BACKGROUND)); | |
| 118 gc.fillGradientRectangle(0, rect.y, 500, rect.height, false); | |
| 119 // restore colors for subsequent drawing | |
| 120 gc.setForeground(foreground); | |
| 121 gc.setBackground(background); | |
| 122 event.detail &= ~DWT.SELECTED; | |
| 123 } | |
| 124 } | |
| 125 }); | |
| 126 for (int i=0; i<columnCount; i++) { | |
| 127 tree.getColumn(i).pack(); | |
| 128 } | |
| 129 tree.setSelection(tree.getItem(0)); | |
| 130 shell.setSize(500, 200); | |
| 131 shell.open(); | |
| 132 while (!shell.isDisposed()) { | |
| 133 if (!display.readAndDispatch()) display.sleep(); | |
| 134 } | |
| 135 display.dispose(); | |
| 136 } |