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/*******************************************************************************
* Copyright (c) 2001, 2004 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.wst.wsdl.ui.internal.util.flatui;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontMetrics;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
public class FlatPageHeader extends Canvas implements IPropertyChangeListener
{
private Image backgroundImage;
private String text;
private Image buttonImage;
private Color imageBackgroundColor;
private Color textForegroundColor;
private int textHMargin = 10;
private int textVMargin = 5;
private Font headerFont;
private List listeners;
private int buttonImageX;
private int buttonImageY;
// Usage:
// See org.eclipse.wst.common.ui.FlatViewUtility.createFlatPageHeader()
// methods.
//
// Ex)
// Composite parent = ... ;
// Image image = ... ;
// Layout layout = ... ;
// String title = ... ;
// WidgetFactory factory = ... ;
//
// header = new FlatPageHeader(parent,SWT.NONE);
// header.setLayout(layout);
// header.setBackgroundImage(image);
// header.setText(title);
// Composite formParent = factory.createComposite(header);
//
// GridLayout gl = new GridLayout();
// gl.numColumns = 1;
// formParent.setLayout(gl);
// formParent.setLayoutData(new GridData(GridData.FILL_BOTH));
//
public FlatPageHeader(Composite parent, int style)
{
super(parent, style);
// The default image background color is white
// The default text forekground color is black
imageBackgroundColor = new Color(null, 255, 255, 255);
textForegroundColor = new Color(null, 0, 0, 0);
setBackground(imageBackgroundColor);
// The default text font is Header font
headerFont = JFaceResources.getHeaderFont();
// Need to dispose the Color
addDisposeListener
(new DisposeListener()
{
public void widgetDisposed(DisposeEvent e)
{
FlatPageHeader.this.widgetDisposed(e);
}
}
);
// need to paint
addPaintListener
(new PaintListener()
{
public void paintControl(PaintEvent e)
{
FlatPageHeader.this.paintControl(e);
}
}
);
// create a list of listeners
listeners = new ArrayList();
// add a mouse listener
this.addMouseListener
(new MouseAdapter()
{
public void mouseDown(MouseEvent event)
{
handleMouseDown(event);
}
}
);
JFaceResources.getFontRegistry().addListener(this);
}
// Compute size of the widget
public Point computeSize(int wHint, int hHint, boolean changed)
{
int width = getParent().getClientArea().width;
int height = 0;
if (backgroundImage != null)
{
Rectangle bounds = backgroundImage.getBounds();
height = bounds.height;
}
if (text != null)
{
GC gc = new GC(this);
int textHeight = getTextHeight(gc);
gc.dispose();
height = Math.max(height, textHeight);
}
if (buttonImage != null)
{
Rectangle bounds = buttonImage.getBounds();
if (height < bounds.height)
height = bounds.height;
}
if (wHint != SWT.DEFAULT) width = wHint;
if (hHint != SWT.DEFAULT) height = hHint;
return new Point(width + 2, height + 2);
}
protected void paintControl(PaintEvent e)
{
GC gc = e.gc;
if (backgroundImage != null)
{
Rectangle imageBounds = backgroundImage.getBounds();
int y = 0;
int x = 0;
if (imageBackgroundColor != null)
{
gc.setBackground(imageBackgroundColor);
gc.fillRectangle(0, 0, imageBounds.width, imageBounds.height);
}
if (SWT.getPlatform().equals("motif")==false)
{
gc.drawImage(backgroundImage, x, y);
}
if (textForegroundColor != null)
gc.setForeground(textForegroundColor);
gc.setFont(headerFont);
// gc.setFont(getFont());
gc.drawText(text, textHMargin, textVMargin, true);
if (buttonImage != null)
{
Rectangle parentBounds = getParent().getClientArea();
Rectangle buttonBounds = buttonImage.getBounds();
int p = parentBounds.x + parentBounds.width;
buttonImageX = p - buttonBounds.width - 4;
buttonImageY = 4;
gc.drawImage(buttonImage, buttonImageX, buttonImageY);
}
}
}
public void addSelectionListener(SelectionListener listener)
{
listeners.add(listener);
}
public void removeSelectionListener(SelectionListener listener)
{
listeners.remove(listener);
}
protected void handleMouseDown(MouseEvent event)
{
if (buttonImage == null)
return;
// chekc if the Button image is clicked
int x = event.x;
int y = event.y;
if (x < buttonImageX || x > buttonImageX + buttonImage.getBounds().width)
{
return;
}
if (y < buttonImageY || y > buttonImageY + buttonImage.getBounds().height)
{
return;
}
int size = listeners.size();
for (int i = 0; i < size; i++)
{
SelectionListener listener = (SelectionListener)listeners.get(i);
listener.widgetSelected(null);
}
}
protected void widgetDisposed(DisposeEvent e)
{
if (imageBackgroundColor != null) imageBackgroundColor.dispose();
if (textForegroundColor != null) textForegroundColor.dispose();
if (backgroundImage != null) backgroundImage.dispose();
}
// getters and setters
public Image getBackgroundImage()
{
return backgroundImage;
}
public void setBackgroundImage(Image backgroundImage)
{
this.backgroundImage = backgroundImage;
redraw();
}
public Image getButtonImage()
{
return buttonImage;
}
public void setButtonImage(Image buttonImage)
{
this.buttonImage = buttonImage;
redraw();
}
public String getText()
{
return text;
}
public void setText(String text)
{
this.text = text;
redraw();
}
public int getTextHMargin()
{
return textHMargin;
}
public void setTextHMargin(int textHMargin)
{
this.textHMargin = textHMargin;
}
public int getTextVMargin()
{
return textVMargin;
}
public void setTextVMargin(int textVMargin)
{
this.textVMargin = textVMargin;
}
public Color getImageBackgroundColor()
{
return imageBackgroundColor;
}
public void setImageBackgroundColor(Color imageBackgroundColor)
{
if (imageBackgroundColor == null)
return;
this.imageBackgroundColor = imageBackgroundColor;
redraw();
}
public Color getTextForegroundColor()
{
return textForegroundColor;
}
public void setTextForegroundColor(Color textForegroundColor)
{
if (textForegroundColor == null)
return;
this.textForegroundColor = textForegroundColor;
redraw();
}
private int getTextHeight(GC gc)
{
int imageHeight = 0;
if (backgroundImage!= null && SWT.getPlatform().equals("motif")==false)
{
imageHeight = backgroundImage.getBounds().height;
}
gc.setFont(headerFont);
// gc.setFont(getFont());
FontMetrics fm = gc.getFontMetrics();
int fontHeight = fm.getHeight();
int height = fontHeight + textVMargin + textVMargin;
return Math.max(height, imageHeight);
}
// private int getTextWidth(GC gc)
// {
// int imageWidth = 0;
// if (backgroundImage!= null && SWT.getPlatform().equals("motif")==false)
// {
// imageWidth = backgroundImage.getBounds().width;
// }
// gc.setFont(headerFont);
//// gc.setFont(getFont());
// FontMetrics fm = gc.getFontMetrics();
// int fontWidth = fm.getAverageCharWidth() + 5;
// int width = fontWidth * text.length() + textHMargin + textHMargin;
// return Math.max(width, imageWidth);
// }
public void handleEvent(Event e)
{
// Widget source = e.widget;
}
public void propertyChange(PropertyChangeEvent event)
{
if(event.getProperty() == JFaceResources.HEADER_FONT && this.isDisposed() == false)
{
headerFont = JFaceResources.getFontRegistry().get(JFaceResources.HEADER_FONT);
this.layout(true);
this.redraw();
}
}
}
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