diff org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet9.d @ 28:69b1fa94a4a8

Added SWT snippets
author Frank Benoit <benoit@tionex.de>
date Sun, 22 Mar 2009 15:17:04 +0100
parents
children 4e5843b771cc
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet9.d	Sun Mar 22 15:17:04 2009 +0100
@@ -0,0 +1,92 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2004 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * D Port
+ *     Jesse Phillips <Jesse.K.Phillips+D> gmail.com
+ *******************************************************************************/
+module org.eclipse.swt.snippets.Snippit9;
+
+/*
+ * Composite example snippet: scroll a child control automatically
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ */
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.PaintListener;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Listener;
+import org.eclipse.swt.widgets.ScrollBar;
+import org.eclipse.swt.widgets.Shell;
+import java.lang.all;
+
+void main () {
+    auto display = new Display ();
+    auto shell = new Shell
+       (display, SWT.SHELL_TRIM | DWT.H_SCROLL | DWT.V_SCROLL);
+    auto composite = new Composite (shell, SWT.BORDER);
+    composite.setSize (700, 600);
+    auto red = display.getSystemColor (SWT.COLOR_RED);
+    composite.addPaintListener (new class PaintListener {
+        public void paintControl (PaintEvent e) {
+            e.gc.setBackground (red);
+            e.gc.fillOval (5, 5, 690, 590);
+        }
+    });
+    auto hBar = shell.getHorizontalBar ();
+    hBar.addListener (SWT.Selection, new class Listener {
+        public void handleEvent (Event e) {
+            auto location = composite.getLocation ();
+            location.x = -hBar.getSelection ();
+            composite.setLocation (location);
+        }
+    });
+    ScrollBar vBar = shell.getVerticalBar ();
+    vBar.addListener (SWT.Selection, new class Listener {
+        public void handleEvent (Event e) {
+            Point location = composite.getLocation ();
+            location.y = -vBar.getSelection ();
+            composite.setLocation (location);
+        }
+    });
+    shell.addListener (SWT.Resize,  new class Listener {
+        public void handleEvent (Event e) {
+            Point size = composite.getSize ();
+            Rectangle rect = shell.getClientArea ();
+            hBar.setMaximum (size.x);
+            vBar.setMaximum (size.y);
+            hBar.setThumb (Math.min (size.x, rect.width));
+            vBar.setThumb (Math.min (size.y, rect.height));
+            int hPage = size.x - rect.width;
+            int vPage = size.y - rect.height;
+            int hSelection = hBar.getSelection ();
+            int vSelection = vBar.getSelection ();
+            Point location = composite.getLocation ();
+            if (hSelection >= hPage) {
+                if (hPage <= 0) hSelection = 0;
+                location.x = -hSelection;
+            }
+            if (vSelection >= vPage) {
+                if (vPage <= 0) vSelection = 0;
+                location.y = -vSelection;
+            }
+            composite.setLocation (location);
+        }
+    });
+    shell.open ();
+    while (!shell.isDisposed()) {
+        if (!display.readAndDispatch ()) display.sleep ();
+    }
+    display.dispose ();
+}