diff options
Diffstat (limited to 'src/YalpClients/SwtClient/GUI/SWTResourceManager.java')
| -rw-r--r-- | src/YalpClients/SwtClient/GUI/SWTResourceManager.java | 145 |
1 files changed, 145 insertions, 0 deletions
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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