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comparison snippets/button/Snippet294.d @ 117:8cdaac0dc743

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Added more snippets from TomD
author Frank Benoit <benoit@tionex.de>
date Sat, 12 Jul 2008 20:09:06 +0200
parents 0de3dab4d6e1
children
comparison
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116:f53c6274734f 117:8cdaac0dc743
25 25
26 import dwt.dwthelper.utils; 26 import dwt.dwthelper.utils;
27 import tango.util.Convert; 27 import tango.util.Convert;
28 28
29 void main(String[] args){ 29 void main(String[] args){
30 Snippet294.main(args); 30 Snippet294.main(args);
31 } 31 }
32 32
33 /* 33 /*
34 * Region on a control: create a non-rectangular button 34 * Region on a control: create a non-rectangular button
35 * 35 *
39 * @since 3.4 39 * @since 3.4
40 */ 40 */
41 41
42 public class Snippet294 { 42 public class Snippet294 {
43 43
44 static int[] circle(int r, int offsetX, int offsetY) { 44 static int[] circle(int r, int offsetX, int offsetY) {
45 int[] polygon = new int[8 * r + 4]; 45 int[] polygon = new int[8 * r + 4];
46 // x^2 + y^2 = r^2 46 // x^2 + y^2 = r^2
47 for (int i = 0; i < 2 * r + 1; i++) { 47 for (int i = 0; i < 2 * r + 1; i++) {
48 int x = i - r; 48 int x = i - r;
49 int y = cast(int)Math.sqrt(cast(real)(r*r - x*x)); 49 int y = cast(int)Math.sqrt(cast(real)(r*r - x*x));
50 polygon[2*i] = offsetX + x; 50 polygon[2*i] = offsetX + x;
51 polygon[2*i+1] = offsetY + y; 51 polygon[2*i+1] = offsetY + y;
52 polygon[8*r - 2*i - 2] = offsetX + x; 52 polygon[8*r - 2*i - 2] = offsetX + x;
53 polygon[8*r - 2*i - 1] = offsetY - y; 53 polygon[8*r - 2*i - 1] = offsetY - y;
54 }
55 return polygon;
54 } 56 }
55 return polygon;
56 }
57 57
58 public static void main(String[] args) { 58 public static void main(String[] args) {
59 Display display = new Display(); 59 Display display = new Display();
60 Shell shell = new Shell(display); 60 Shell shell = new Shell(display);
61 shell.setText("Regions on a Control"); 61 shell.setText("Regions on a Control");
62 shell.setLayout(new FillLayout()); 62 shell.setLayout(new FillLayout());
63 shell.setBackground(display.getSystemColor(DWT.COLOR_DARK_RED)); 63 shell.setBackground(display.getSystemColor(DWT.COLOR_DARK_RED));
64 64
65 Button b2 = new Button(shell, DWT.PUSH); 65 Button b2 = new Button(shell, DWT.PUSH);
66 b2.setText("Button with Regions"); 66 b2.setText("Button with Regions");
67 67
68 // define a region that looks like a circle with two holes in ot 68 // define a region that looks like a circle with two holes in ot
69 Region region = new Region(); 69 Region region = new Region();
70 region.add(circle(67, 87, 77)); 70 region.add(circle(67, 87, 77));
71 region.subtract(circle(20, 87, 47)); 71 region.subtract(circle(20, 87, 47));
72 region.subtract(circle(20, 87, 113)); 72 region.subtract(circle(20, 87, 113));
73 73
74 // define the shape of the button using setRegion 74 // define the shape of the button using setRegion
75 b2.setRegion(region); 75 b2.setRegion(region);
76 b2.setLocation(100,50); 76 b2.setLocation(100,50);
77 77
78 b2.addListener(DWT.Selection, new class() Listener { 78 b2.addListener(DWT.Selection, new class() Listener {
79 public void handleEvent(Event e) { 79 public void handleEvent(Event e) {
80 shell.close(); 80 shell.close();
81 } 81 }
82 }); 82 });
83 83
84 shell.setSize(200,200); 84 shell.setSize(200,200);
85 shell.open(); 85 shell.open();
86 86
87 while (!shell.isDisposed()) { 87 while (!shell.isDisposed()) {
88 if (!display.readAndDispatch()) 88 if (!display.readAndDispatch())
89 display.sleep(); 89 display.sleep();
90 }
91 region.dispose();
92 display.dispose();
90 } 93 }
91 region.dispose();
92 display.dispose();
93 }
94 } 94 }