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comparison snippets/tree/Snippet220.d @ 86:4095b64d16f5

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Fixed in dwt-win, so removed the debugging outputs.
author Frank Benoit <benoit@tionex.de>
date Sun, 18 May 2008 20:58:10 +0200
parents fa286c85e7b8
children 1f0a7a472680
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85:fa286c85e7b8 86:4095b64d16f5
10 * D Port: 10 * D Port:
11 * Bill Baxter <wbaxter@gmail.com> 11 * Bill Baxter <wbaxter@gmail.com>
12 *******************************************************************************/ 12 *******************************************************************************/
13 module dwtsnippets.tree.Snippet220; 13 module dwtsnippets.tree.Snippet220;
14 14
15 /* 15 /*
16 * Tree example snippet: Images on the right side of the TreeItem 16 * Tree example snippet: Images on the right side of the TreeItem
17 * 17 *
18 * For a detailed explanation of this snippet see 18 * For a detailed explanation of this snippet see
19 * http://www.eclipse.org/articles/Article-CustomDrawingTableAndTreeItems/customDraw.htm#_example5 19 * http://www.eclipse.org/articles/Article-CustomDrawingTableAndTreeItems/customDraw.htm#_example5
20 * 20 *
21 * For a list of all SWT example snippets see 21 * For a list of all SWT example snippets see
22 * http://www.eclipse.org/swt/snippets/ 22 * http://www.eclipse.org/swt/snippets/
23 * 23 *
24 * @since 3.2 24 * @since 3.2
25 */ 25 */
26 26
27 import dwt.DWT; 27 import dwt.DWT;
28 import dwt.graphics.Image; 28 import dwt.graphics.Image;
34 import dwt.widgets.Tree; 34 import dwt.widgets.Tree;
35 import dwt.widgets.TreeItem; 35 import dwt.widgets.TreeItem;
36 36
37 import tango.util.Convert; 37 import tango.util.Convert;
38 38
39 import tango.io.Stdout;
40 version(JIVE){ 39 version(JIVE){
41 import jive.stacktrace; 40 import jive.stacktrace;
42 } 41 }
43 42
44 void main() { 43 void main() {
44 const int IMAGE_MARGIN = 2;
45 void handleEventMeasureItem(Event event) {
46 TreeItem item = cast(TreeItem)event.item;
47 Image trailingImage = cast(Image)item.getData();
48 if (trailingImage !is null) {
49 int w1 = event.width;
50 event.width += trailingImage.getBounds().width + IMAGE_MARGIN;
51 int w2 = event.width;
52 }
53 }
54 void handleEventPaintItem(Event event, Tree tree ) {
55 TreeItem item = cast(TreeItem)event.item;
56 Image trailingImage = cast(Image)item.getData();
57 if (trailingImage !is null) {
58 int x = event.x + event.width + IMAGE_MARGIN;
59 int itemHeight = tree.getItemHeight();
60 int imageHeight = trailingImage.getBounds().height;
61 int y = event.y + (itemHeight - imageHeight) / 2;
62 event.gc.drawImage(trailingImage, x, y);
63 }
64 }
45 Display display = new Display(); 65 Display display = new Display();
46 Shell shell = new Shell(display); 66 Shell shell = new Shell(display);
47 shell.setBounds(10, 10, 350, 200); 67 shell.setBounds(10, 10, 350, 200);
48 Image xImage = new Image (display, 16, 16); 68 Image xImage = new Image (display, 16, 16);
49 GC gc = new GC(xImage); 69 GC gc = new GC(xImage);
50 gc.setForeground(display.getSystemColor(DWT.COLOR_RED)); 70 gc.setForeground(display.getSystemColor(DWT.COLOR_RED));
51 gc.drawLine(1, 1, 14, 14); 71 gc.drawLine(1, 1, 14, 14);
52 gc.drawLine(1, 14, 14, 1); 72 gc.drawLine(1, 14, 14, 1);
53 gc.drawOval(2, 2, 11, 11); 73 gc.drawOval(2, 2, 11, 11);
54 gc.dispose(); 74 gc.dispose();
55 const int IMAGE_MARGIN = 2; 75 Tree tree = new Tree(shell, DWT.CHECK);
56 final Tree tree = new Tree(shell, DWT.CHECK);
57 tree.setBounds(10, 10, 300, 150); 76 tree.setBounds(10, 10, 300, 150);
58 TreeItem item = new TreeItem(tree, DWT.NONE); 77 TreeItem item = new TreeItem(tree, DWT.NONE);
59 item.setText("root item"); 78 item.setText("root item");
60 for (int i = 0; i < 4; i++) { 79 for (int i = 0; i < 4; i++) {
61 TreeItem newItem = new TreeItem(item, DWT.NONE); 80 TreeItem newItem = new TreeItem(item, DWT.NONE);
67 86
68 /* 87 /*
69 * NOTE: MeasureItem and PaintItem are called repeatedly. Therefore it is 88 * NOTE: MeasureItem and PaintItem are called repeatedly. Therefore it is
70 * critical for performance that these methods be as efficient as possible. 89 * critical for performance that these methods be as efficient as possible.
71 */ 90 */
72 tree.addListener(DWT.MeasureItem, new class Listener { 91 tree.addListener(DWT.MeasureItem, dgListener( &handleEventMeasureItem ));
73 public void handleEvent(Event event) { 92 tree.addListener(DWT.PaintItem,dgListener( &handleEventPaintItem, tree ));
74 Stdout("measure").newline;
75 TreeItem item = cast(TreeItem)event.item;
76 Image trailingImage = cast(Image)item.getData();
77 if (trailingImage !is null) {
78 Stdout(" - measure image").newline;
79 event.width += trailingImage.getBounds().width + IMAGE_MARGIN;
80 }
81 }
82 });
83 tree.addListener(DWT.PaintItem, new class Listener {
84 public void handleEvent(Event event) {
85 Stdout("paint").newline;
86 TreeItem item = cast(TreeItem)event.item;
87 Image trailingImage = cast(Image)item.getData();
88 if (trailingImage !is null) {
89 Stdout(" - draw image").newline;
90 int x = event.x + event.width + IMAGE_MARGIN;
91 int itemHeight = tree.getItemHeight();
92 int imageHeight = trailingImage.getBounds().height;
93 int y = event.y + (itemHeight - imageHeight) / 2;
94 event.gc.drawImage(trailingImage, x, y);
95 }
96 }
97 });
98 93
99 shell.open(); 94 shell.open();
100 while (!shell.isDisposed()) { 95 while (!shell.isDisposed()) {
101 if (!display.readAndDispatch()) display.sleep(); 96 if (!display.readAndDispatch()) display.sleep();
102 } 97 }