--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/ui/internal/forms/widgets/SelectionData.d	Sat May 24 05:11:16 2008 +0200
@@ -0,0 +1,148 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 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
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.ui.internal.forms.widgets.SelectionData;
+
+import dwtx.ui.internal.forms.widgets.Locator;
+
+import dwt.DWT;
+import dwt.events.MouseEvent;
+import dwt.graphics.Color;
+import dwt.graphics.Point;
+import dwt.widgets.Display;
+
+import dwt.dwthelper.utils;
+import tango.util.collection.ArraySeq;
+static import tango.text.Text;
+
+public class SelectionData {
+    public Display display;
+    public Color bg;
+    public Color fg;
+    private Point start;
+    private Point stop;
+    private ArraySeq!(String) segments;
+    private bool newLineNeeded;
+
+    public this(MouseEvent e) {
+        display = e.display;
+        segments = new ArraySeq!(String);
+        start = new Point(e.x, e.y);
+        stop = new Point(e.x, e.y);
+        bg = e.display.getSystemColor(DWT.COLOR_LIST_SELECTION);
+        fg = e.display.getSystemColor(DWT.COLOR_LIST_SELECTION_TEXT);
+    }
+
+    public void markNewLine() {
+        newLineNeeded=true;
+    }
+    public void addSegment(String text) {
+        if (newLineNeeded) {
+            segments.append(System.getProperty("line.separator")); //$NON-NLS-1$
+            newLineNeeded=false;
+        }
+        segments.append(text);
+    }
+
+    public void update(MouseEvent e) {
+        //Control c = (Control)e.widget;
+        stop.x = e.x;
+        stop.y = e.y;
+    }
+    public void reset() {
+        segments.clear();
+    }
+    public String getSelectionText() {
+        auto buf = new tango.text.Text.Text!(char);
+        for (int i=0; i<segments.size(); i++) {
+            buf.append(segments.get(i));
+        }
+        return buf.toString();
+    }
+    public bool canCopy() {
+        return segments.size()>0;
+    }
+
+    private int getTopOffset() {
+        return start.y<stop.y?start.y:stop.y;
+    }
+    private int getBottomOffset() {
+        return start.y>stop.y?start.y:stop.y;
+    }
+    public int getLeftOffset(Locator locator) {
+        return isInverted(locator)? stop.x:start.x;
+    }
+    public int getLeftOffset(int rowHeight) {
+        return isInverted(rowHeight) ? stop.x:start.x;
+    }
+    public int getRightOffset(Locator locator) {
+        return isInverted(locator)? start.x: stop.x;
+    }
+    public int getRightOffset(int rowHeight) {
+        return isInverted(rowHeight) ? start.x:stop.x;
+    }
+    private bool isInverted(Locator locator) {
+        int rowHeight = locator.heights.get(locator.rowCounter).array[0];
+        return isInverted(rowHeight);
+    }
+    private bool isInverted(int rowHeight) {
+        int deltaY = start.y - stop.y;
+        if (Math.abs(deltaY) > rowHeight) {
+            // inter-row selection
+            return deltaY>0;
+        }
+        // intra-row selection
+        return start.x > stop.x;
+    }
+    public bool isEnclosed() {
+        return !start.equals(stop);
+    }
+
+    public bool isSelectedRow(Locator locator) {
+        if (!isEnclosed())
+            return false;
+        int rowHeight = locator.heights.get(locator.rowCounter).array[0];
+        return isSelectedRow(locator.y, rowHeight);
+    }
+    public bool isSelectedRow(int y, int rowHeight) {
+        if (!isEnclosed())
+            return false;
+        return (y + rowHeight >= getTopOffset() &&
+                y <= getBottomOffset());
+    }
+    public bool isFirstSelectionRow(Locator locator) {
+        if (!isEnclosed())
+            return false;
+        int rowHeight = locator.heights.get(locator.rowCounter).array[0];
+        return (locator.y + rowHeight >= getTopOffset() &&
+                locator.y <= getTopOffset());
+    }
+    public bool isFirstSelectionRow(int y, int rowHeight) {
+        if (!isEnclosed())
+            return false;
+        return (y + rowHeight >= getTopOffset() &&
+                y <= getTopOffset());
+    }
+    public bool isLastSelectionRow(Locator locator) {
+        if (!isEnclosed())
+            return false;
+        int rowHeight = locator.heights.get(locator.rowCounter).array[0];
+        return (locator.y + rowHeight >=getBottomOffset() &&
+                locator.y <= getBottomOffset());
+    }
+    public bool isLastSelectionRow(int y, int rowHeight) {
+        if (!isEnclosed())
+            return false;
+        return (y + rowHeight >=getBottomOffset() &&
+                y <= getBottomOffset());
+    }
+}