CoolBar Examples
/*******************************************************************************
* All Right Reserved. Copyright (c) 1998, 2004 Jackwind Li Guojie
*
* Created on Feb 27, 2004 12:17:28 AM by JACK $Id$
*
******************************************************************************/
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.CoolBar;
import org.eclipse.swt.widgets.CoolItem;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class CoolBarExamples {
Display display = new Display();
Shell shell = new Shell(display);
public CoolBarExamples() {
shell.setLayout(new GridLayout());
final CoolBar coolBar = new CoolBar(shell, SWT.NONE);
coolBar.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
// cool item with a text field.
CoolItem textItem = new CoolItem(coolBar, SWT.NONE);
Text text = new Text(coolBar, SWT.BORDER | SWT.DROP_DOWN);
text.setText("TEXT");
text.pack();
Point size = text.getSize();
textItem.setControl(text);
textItem.setSize(textItem.computeSize(size.x, size.y));
// cool item with a label.
CoolItem labelItem = new CoolItem(coolBar, SWT.NONE);
Label label = new Label(coolBar, SWT.NONE);
label.setText("LABEL");
label.pack();
size = label.getSize();
labelItem.setControl(label);
labelItem.setSize(textItem.computeSize(size.x, size.y));
// cool item with a button.
CoolItem buttonItem = new CoolItem(coolBar, SWT.NONE | SWT.DROP_DOWN);
Composite composite = new Composite(coolBar, SWT.NONE);
composite.setLayout(new GridLayout(2, true));
Button button1 = new Button(composite, SWT.PUSH);
button1.setText("Button 1");
button1.pack();
Button button2 = new Button(composite, SWT.PUSH);
button2.setText("Button 2");
button2.pack();
composite.pack();
size = composite.getSize();
buttonItem.setControl(composite);
buttonItem.setSize(buttonItem.computeSize(size.x, size.y));
// // Test cool item adding method.
// Label label2 = new Label(coolBar, SWT.NONE);
// label2.setText("label2");
// addControlToCoolBar(label2, SWT.DROP_DOWN, coolBar);
try {
setState(coolBar, new File("coolbar.state"));
} catch (IOException e1) {
e1.printStackTrace();
}
shell.addListener(SWT.Close, new Listener() {
public void handleEvent(Event event) {
try {
saveState(coolBar, new File("coolbar.state") );
} catch (IOException e) {
e.printStackTrace();
}
}
});
shell.setSize(300, 120);
// shell.pack();
shell.open();
// Set up the event loop.
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
// If no more entries in event queue
display.sleep();
}
}
display.dispose();
}
/**
* Creates a cool item with the given control and add the cool item to the
* specified cool bar.
*
* @param control
* @param coolItemStyle -
* should be SWT.NONE or SWT.DROP_DOWN.
* @param coolBar
* @return the cool item created.
*/
public static CoolItem addControlToCoolBar(
Control control,
int coolItemStyle,
CoolBar coolBar) {
CoolItem coolItem = new CoolItem(coolBar, coolItemStyle);
Point size = control.getSize();
if (size.x == 0 && size.y == 0) {
// The control size has not been set yet.
// Pack the control and recalculate its size.
control.pack();
size = control.getSize();
}
coolItem.setControl(control);
coolItem.setSize(coolItem.computeSize(size.x, size.y));
return coolItem;
}
// Save the display state of the given cool bar in the specified file.
private void saveState(CoolBar coolBar, File file) throws IOException {
DataOutputStream out = new DataOutputStream(new FileOutputStream(file));
try {
// Orders of items.
System.out.println("Item order: " + intArrayToString(coolBar.getItemOrder()));
int[] order = coolBar.getItemOrder();
out.writeInt(order.length);
for(int i=0; i<order.length; i++)
out.writeInt(order[i]);
// Wrap indices.
System.out.println("Wrap indices: " + intArrayToString(coolBar.getWrapIndices()));
int[] wrapIndices = coolBar.getWrapIndices();
out.writeInt(wrapIndices.length);
for(int i=0; i<wrapIndices.length; i++)
out.writeInt(wrapIndices[i]);
// Sizes.
Point[] sizes = coolBar.getItemSizes();
out.writeInt(sizes.length);
for(int i=0; i<sizes.length; i++) {
out.writeInt(sizes[i].x);
out.writeInt(sizes[i].y);
}
} finally {
out.close();
}
}
// Sets the display state for a cool bar, using the saved information in the given file.
private void setState(CoolBar coolBar, File file) throws IOException {
if(! file.exists())
throw new IOException("File does not exist: " + file);
DataInputStream in = new DataInputStream(new FileInputStream(file));
try {
// Order
int size = in.readInt();
int[] order = new int[size];
for(int i=0; i<order.length; i++)
order[i] = in.readInt();
// Wrap indices.
size = in.readInt();
int[] wrapIndices = new int[size];
for(int i=0; i<wrapIndices.length; i++)
wrapIndices[i] = in.readInt();
// Sizes.
size = in.readInt();
Point[] sizes = new Point[size];
for(int i=0; i<sizes.length; i++)
sizes[i] = new Point(in.readInt(), in.readInt());
coolBar.setItemLayout(order, wrapIndices, sizes);
} finally {
in.close();
}
}
public static String intArrayToString(int values[]) {
StringBuffer sb = new StringBuffer();
sb.append("{");
for (int i = 0; values != null && i < values.length; i++) {
sb.append(values[i]);
if (i != values.length - 1)
sb.append(", ");
}
sb.append("}");
return sb.toString();
}
public static void main(String[] args) {
new CoolBarExamples();
}
}
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