From d6fa96b4cd67cf4fa18b5b9b6739f9bc2494a9f4 Mon Sep 17 00:00:00 2001
From: guest <guest@f059d3a0-6783-47b7-97ff-1fe0bbf25129>
Date: Tue, 23 Sep 2008 21:29:27 +0000
Subject: initial import

git-svn-id: http://manut.eu/svn/yalp/trunk@1 f059d3a0-6783-47b7-97ff-1fe0bbf25129
---
 .../SwtClient/GUI/SWTResourceManager.java          | 145 +++++++++++++++++++++
 1 file changed, 145 insertions(+)
 create mode 100644 src/YalpClients/SwtClient/GUI/SWTResourceManager.java

(limited to 'src/YalpClients/SwtClient/GUI/SWTResourceManager.java')

diff --git a/src/YalpClients/SwtClient/GUI/SWTResourceManager.java b/src/YalpClients/SwtClient/GUI/SWTResourceManager.java
new file mode 100644
index 0000000..87dffc3
--- /dev/null
+++ b/src/YalpClients/SwtClient/GUI/SWTResourceManager.java
@@ -0,0 +1,145 @@
+package YalpClients.SwtClient.GUI;
+
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Vector;
+
+import org.eclipse.swt.events.DisposeEvent;
+import org.eclipse.swt.events.DisposeListener;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.Cursor;
+import org.eclipse.swt.graphics.Font;
+import org.eclipse.swt.graphics.FontData;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Widget;
+
+/*
+ * Class to manage SWT resources (Font, Color, Image and Cursor)
+ * There are no restrictions on the use of this code.
+ *
+ * You may change this code and your changes will not be overwritten,
+ * but if you change the version number below then this class will be
+ * completely overwritten by Jigloo.
+ * #SWTResourceManager:version4.0.0#
+ */
+public class SWTResourceManager {
+
+	private static HashMap resources = new HashMap();
+	private static Vector users = new Vector();
+	private static SWTResourceManager instance = new SWTResourceManager();
+
+	private static DisposeListener disposeListener = new DisposeListener() {
+		public void widgetDisposed(DisposeEvent e) {
+			users.remove(e.getSource());
+			if (users.size() == 0)
+				dispose();
+		}
+	};
+
+	/*
+	 * This method should be called by *all* Widgets which use resources
+	 * provided by this SWTResourceManager. When widgets are disposed,
+	 * they are removed from the "users" Vector, and when no more
+	 * registered Widgets are left, all resources are disposed.
+	 * <P>
+	 * If this method is not called for all Widgets then it should not be called
+	 * at all, and the "dispose" method should be explicitly called after all
+	 * resources are no longer being used.
+	 */
+	public static void registerResourceUser(Widget widget) {
+		if (users.contains(widget))
+			return;
+		users.add(widget);
+		widget.addDisposeListener(disposeListener);
+	}
+
+	public static void dispose() {
+		Iterator it = resources.keySet().iterator();
+		while (it.hasNext()) {
+			Object resource = resources.get(it.next());
+			if (resource instanceof Font)
+				 ((Font) resource).dispose();
+			else if (resource instanceof Color)
+				 ((Color) resource).dispose();
+			else if (resource instanceof Image)
+				 ((Image) resource).dispose();
+			else if (resource instanceof Cursor)
+				 ((Cursor) resource).dispose();
+		}
+		resources.clear();
+	}
+
+	public static Font getFont(String name, int size, int style) {
+		return getFont(name, size, style, false, false);
+	}
+
+	public static Font getFont(String name, int size, int style, boolean strikeout, boolean underline) {
+		String fontName = name + "|" + size + "|" + style + "|" + strikeout + "|" + underline;
+		if (resources.containsKey(fontName))
+			return (Font) resources.get(fontName);
+		FontData fd = new FontData(name, size, style);
+		if (strikeout || underline) {
+			try {
+				Class lfCls = Class.forName("org.eclipse.swt.internal.win32.LOGFONT");
+				Object lf = FontData.class.getField("data").get(fd);
+				if (lf != null && lfCls != null) {
+					if (strikeout)
+						lfCls.getField("lfStrikeOut").set(lf, new Byte((byte) 1));
+					if (underline)
+						lfCls.getField("lfUnderline").set(lf, new Byte((byte) 1));
+				}
+			} catch (Throwable e) {
+				System.err.println(
+					"Unable to set underline or strikeout" + " (probably on a non-Windows platform). " + e);
+			}
+		}
+		Font font = new Font(Display.getDefault(), fd);
+		resources.put(fontName, font);
+		return font;
+	}
+
+	public static Image getImage(String url, Control widget) {
+		Image img = getImage(url);
+		if(img != null && widget != null)
+			img.setBackground(widget.getBackground());
+		return img;
+	}
+
+	public static Image getImage(String url) {
+		try {
+			url = url.replace('\\', '/');
+			if (url.startsWith("/"))
+				url = url.substring(1);
+			if (resources.containsKey(url))
+				return (Image) resources.get(url);
+			Image img = new Image(Display.getDefault(), instance.getClass().getClassLoader().getResourceAsStream(url));
+			if (img != null)
+				resources.put(url, img);
+			return img;
+		} catch (Exception e) {
+			System.err.println("SWTResourceManager.getImage: Error getting image "+url+", "+e);
+			return null;
+		}
+	}
+
+	public static Color getColor(int red, int green, int blue) {
+		String name = "COLOR:" + red + "," + green + "," + blue;
+		if (resources.containsKey(name))
+			return (Color) resources.get(name);
+		Color color = new Color(Display.getDefault(), red, green, blue);
+		resources.put(name, color);
+		return color;
+	}
+
+	public static Cursor getCursor(int type) {
+		String name = "CURSOR:" + type;
+		if (resources.containsKey(name))
+			return (Cursor) resources.get(name);
+		Cursor cursor = new Cursor(Display.getDefault(), type);
+		resources.put(name, cursor);
+		return cursor;
+	}
+
+}
-- 
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