From c9c7ee9de1a9e51baa7e00d87addc6a41b0d9af6 Mon Sep 17 00:00:00 2001
From: Veronika Irvine <veronika>
Date: Thu, 30 Mar 2006 20:51:33 +0000
Subject: new custom draw snippets for Table

---
 .../src/org/eclipse/swt/snippets/Snippet229.java   |  97 +++++++++++++++++++
 .../src/org/eclipse/swt/snippets/Snippet230.java   |  86 +++++++++++++++++
 .../src/org/eclipse/swt/snippets/Snippet231.java   | 104 +++++++++++++++++++++
 3 files changed, 287 insertions(+)
 create mode 100644 examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet229.java
 create mode 100644 examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet230.java
 create mode 100644 examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet231.java

(limited to 'examples/org.eclipse.swt.snippets/src')

diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet229.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet229.java
new file mode 100644
index 0000000000..61650a0b2f
--- /dev/null
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet229.java
@@ -0,0 +1,97 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2006 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
+ *******************************************************************************/
+package org.eclipse.swt.snippets;
+
+/* 
+ * Table example snippet: Draw a custom gradient selection
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ * 
+ * @since 3.2
+ */
+
+import org.eclipse.swt.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.layout.*;
+import org.eclipse.swt.widgets.*;
+
+public class Snippet229 {
+public static void main(String [] args) {
+	final Display display = new Display();
+	Shell shell = new Shell(display);
+	shell.setText("Custom gradient selection for Table");
+	shell.setLayout(new FillLayout());
+	final Table table = new Table(shell, SWT.MULTI | SWT.FULL_SELECTION);
+	table.setHeaderVisible(true);
+	table.setLinesVisible(true);
+	int columnCount = 3;
+	for (int i=0; i<columnCount; i++) {
+		TableColumn column = new TableColumn(table, SWT.NONE);
+		column.setText("Column " + i);	
+	}
+	int itemCount = 8;
+	for(int i = 0; i < itemCount; i++) {
+		TableItem item = new TableItem(table, SWT.NONE);
+		item.setText(new String[] {"item "+i+" a", "item "+i+" b", "item "+i+" c"});
+	}		
+	/*
+	 * NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly.
+	 * Therefore, it is critical for performance that these methods be
+	 * as efficient as possible.
+	 */
+	table.addListener(SWT.EraseItem, new Listener() {
+		public void handleEvent(Event event) {			
+			if((event.detail & SWT.SELECTED) != 0) {
+				GC gc = event.gc;
+				Rectangle area = table.getClientArea();
+				/*
+				 * If you wish to paint the selection beyond the end of
+				 * last column, you must change the clipping region.
+				 */
+				int columnCount = table.getColumnCount();
+				if (event.index == columnCount - 1 || columnCount == 0) {
+					int width = area.x + area.width - event.x;
+					if (width > 0) {
+						Region region = new Region();
+						gc.getClipping(region);
+						region.add(event.x, event.y, width, event.height); 
+						gc.setClipping(region);
+						region.dispose();
+					}
+				}
+				gc.setAdvanced(true);
+				if (gc.getAdvanced()) gc.setAlpha(127);								
+				Rectangle rect = event.getBounds();
+				Color foreground = gc.getForeground();
+				Color background = gc.getBackground();
+				gc.setForeground(display.getSystemColor(SWT.COLOR_RED));
+				gc.setBackground(display.getSystemColor(SWT.COLOR_LIST_BACKGROUND));
+				gc.fillGradientRectangle(0, rect.y, display.getBounds().width, rect.height, false);
+				// restore colors for subsequent drawing
+				gc.setForeground(foreground);
+				gc.setBackground(background);
+				event.detail &= ~SWT.SELECTED;					
+			}						
+		}
+	});		
+	for (int i=0; i<columnCount; i++) {
+		table.getColumn(i).pack();
+	}	
+	table.setSelection(table.getItem(0));
+	shell.setSize(500, 200);
+	shell.open();
+	while (!shell.isDisposed()) {
+		if (!display.readAndDispatch()) display.sleep();
+	}
+	display.dispose();	
+}
+}
\ No newline at end of file
diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet230.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet230.java
new file mode 100644
index 0000000000..ee062dbbcd
--- /dev/null
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet230.java
@@ -0,0 +1,86 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2006 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
+ *******************************************************************************/
+package org.eclipse.swt.snippets;
+
+/* 
+ * Table example snippet: Images on the right hand side of a TableItem
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ * 
+ * @since 3.2
+ */
+
+import org.eclipse.swt.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.layout.*;
+import org.eclipse.swt.widgets.*;
+
+public class Snippet230 {
+	
+public static void main(String [] args) {
+	Display display = new Display();
+	final Image image = display.getSystemImage(SWT.ICON_INFORMATION);
+	Shell shell = new Shell(display);
+	shell.setText("Images on the right side of the TableItem");
+	shell.setLayout(new FillLayout ());
+	Table table = new Table(shell, SWT.MULTI | SWT.FULL_SELECTION);
+	table.setHeaderVisible(true);
+	table.setLinesVisible(true);			
+	int columnCount = 3;
+	for (int i=0; i<columnCount; i++) {
+		TableColumn column = new TableColumn(table, SWT.NONE);
+		column.setText("Column " + i);	
+	}
+	int itemCount = 8;
+	for(int i = 0; i < itemCount; i++) {
+		TableItem item = new TableItem(table, SWT.NONE);
+		item.setText(new String[] {"item "+i+" a", "item "+i+" b", "item "+i+" c"});
+	}
+	/*
+	 * NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly.
+	 * Therefore, it is critical for performance that these methods be
+	 * as efficient as possible.
+	 */
+	Listener paintListener = new Listener() {
+		public void handleEvent(Event event) {		
+			switch(event.type) {
+				case SWT.MeasureItem: {
+					Rectangle rect = image.getBounds();
+					event.width += rect.width;
+					event.height = Math.max(event.height, rect.height + 2);
+					break;
+				}
+				case SWT.PaintItem: {
+					int x = event.x + event.width;
+					Rectangle rect = image.getBounds();
+					int offset = Math.max(0, (event.height - rect.height) / 2);
+					event.gc.drawImage(image, x, event.y + offset);
+					break;
+				}
+			}
+		}
+	};		
+	table.addListener(SWT.MeasureItem, paintListener);
+	table.addListener(SWT.PaintItem, paintListener);		
+
+	for(int i = 0; i < columnCount; i++) {
+		table.getColumn(i).pack();
+	}	
+	shell.setSize(500, 200);
+	shell.open();
+	while(!shell.isDisposed ()) {
+		if(!display.readAndDispatch()) display.sleep();
+	}
+	if(image != null) image.dispose();
+	display.dispose();
+}
+}
diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet231.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet231.java
new file mode 100644
index 0000000000..388164ee08
--- /dev/null
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet231.java
@@ -0,0 +1,104 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2006 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
+ *******************************************************************************/
+package org.eclipse.swt.snippets;
+
+/* 
+ * example snippet: Multiple lines per TableItem
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ * 
+ * @since 3.2
+ */
+
+import org.eclipse.swt.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.layout.*;
+import org.eclipse.swt.widgets.*;
+
+public class Snippet231 {
+	
+public static void main(String [] args) {
+	Display display = new Display();
+	Shell shell = new Shell (display);
+	shell.setText("Multiple lines in a TableItem");
+	shell.setLayout (new FillLayout());
+	final Table table = new Table(shell, SWT.MULTI | SWT.FULL_SELECTION);
+	table.setHeaderVisible(true);
+	table.setLinesVisible(true);
+	int columnCount = 4;
+	for (int i=0; i<columnCount; i++) {
+		TableColumn column = new TableColumn(table, SWT.NONE);
+		column.setText("Column " + i);	
+	}
+	int itemCount = 8;
+	for(int i = 0; i < itemCount; i++) {
+		TableItem item = new TableItem(table, SWT.NONE);
+		item.setText(new String[] {"item "+i+" a", "item "+i+" b", "item "+i+" c", "item "+i+" d"});
+	}	
+	/*
+	 * NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly.
+	 * Therefore, it is critical for performance that these methods be
+	 * as efficient as possible.
+	 */
+	Listener paintListener = new Listener() {
+		public void handleEvent(Event event) {
+			switch(event.type) {		
+				case SWT.MeasureItem: {
+					TableItem item = (TableItem)event.item;
+					String text = getText(item, event.index);
+					Point size = event.gc.textExtent(text);
+					event.width = size.x;
+					event.height = Math.max(event.height, size.y);
+					break;
+				}
+				case SWT.PaintItem: {
+					TableItem item = (TableItem)event.item;
+					String text = getText(item, event.index);
+					Point size = event.gc.textExtent(text);					
+					int offset2 = event.index == 0 ? Math.max(0, (event.height - size.y) / 2) : 0;
+					event.gc.drawText(text, event.x, event.y + offset2, true);
+					break;
+				}
+				case SWT.EraseItem: {	
+					event.detail &= ~SWT.FOREGROUND;
+					break;
+				}
+			}
+		}
+		String getText(TableItem item, int column) {
+			String text = item.getText(column);
+			if (column != 0) {
+				int index = table.indexOf(item);
+				if ((index+column) % 3 == 1){
+					text +="\nnew line";
+				}
+				if ((index+column) % 3 == 2) {
+					text +="\nnew line\nnew line";
+				}
+			}
+			return text;
+		}
+	};
+	table.addListener(SWT.MeasureItem, paintListener);
+	table.addListener(SWT.PaintItem, paintListener);
+	table.addListener(SWT.EraseItem, paintListener);
+	for (int i = 0; i < columnCount; i++) {
+		table.getColumn(i).pack();
+	}
+	shell.pack();
+	shell.open();
+	while(!shell.isDisposed()) {
+		if(!display.readAndDispatch()) display.sleep();
+	}
+	display.dispose();
+}
+}
\ No newline at end of file
-- 
cgit