Java Tutorial/SWT/SWT AWT Swing — различия между версиями
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Версия 17:44, 31 мая 2010
Содержание
- 1 17. Create a FontData object which encapsulate the essential data to create a swt font.
- 2 17. Create an awt font by converting as much information as possible from the provided swt Font.
- 3 17. Create an awt font by converting as much information as possible from the provided swt FontData.
- 4 17. Creates an awt color instance to match the rgb values of the specified swt color.
- 5 17. Creates an AWT MouseEvent from a swt event.
- 6 17. Creates a swt color instance to match the rgb values of the specified awt color. alpha channel is not supported.
- 7 17. Creates a swt color instance to match the rgb values of the specified awt paint.
- 8 17. Draw Graphics2D stuff on a swt composite
- 9 17. Embed a JTable in SWT (no flicker)
- 10 17. Embeded Swing/AWT components to SWT
- 11 17. Returns an AWT point with the same coordinates as the specified SWT point.
- 12 17. Returns an SWT point with the same coordinates as the specified AWT point.
- 13 17. Returns an SWT point with the same coordinates as the specified AWT point (rounded to integer values).
- 14 17. Transform an awt Rectangle2d instance into a swt Rectangle2d.
- 15 17. Transform a swt Rectangle instance into an AWT Rectangle.
- 16 17. Using AWT to paint inside SWT
17. Create a FontData object which encapsulate the essential data to create a swt font.
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------
* SWTUtils.java
* -------------
* (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Rainer Blessing;
* David Gilbert (david.gilbert@object-refinery.ru);
* Christoph Beck.
*
* Changes
* -------
* 01-Aug-2006 : New class (HP);
* 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
* 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
* added a new convert method for mouse events (HP);
* 12-Jul-2007 : Improved the mouse event conversion with buttons
* and modifiers handling, patch sent by Christoph Beck (HP);
* 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
* 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
* convertAWTImageToSWT() (DG);
* 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
*
*/
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import javax.swing.JPanel;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
/**
* Utility class gathering some useful and general method.
* Mainly convert forth and back graphical stuff between
* awt and swt.
*/
public class SWTUtils {
private final static String Az = "ABCpqr";
/** A dummy JPanel used to provide font metrics. */
protected static final JPanel DUMMY_PANEL = new JPanel();
/**
* Create a <code>FontData</code> object which encapsulate
* the essential data to create a swt font. The data is taken
* from the provided awt Font.
* <p>Generally speaking, given a font size, the returned swt font
* will display differently on the screen than the awt one.
* Because the SWT toolkit use native graphical resources whenever
* it is possible, this fact is platform dependent. To address
* this issue, it is possible to enforce the method to return
* a font with the same size (or at least as close as possible)
* as the awt one.
* <p>When the object is no more used, the user must explicitly
* call the dispose method on the returned font to free the
* operating system resources (the garbage collector won"t do it).
*
* @param device The swt device to draw on (display or gc device).
* @param font The awt font from which to get the data.
* @param ensureSameSize A boolean used to enforce the same size
* (in pixels) between the awt font and the newly created swt font.
* @return a <code>FontData</code> object.
*/
public static FontData toSwtFontData(Device device, java.awt.Font font,
boolean ensureSameSize) {
FontData fontData = new FontData();
fontData.setName(font.getFamily());
// SWT and AWT share the same style constants.
fontData.setStyle(font.getStyle());
// convert the font size (in pt for awt) to height in pixels for swt
int height = (int) Math.round(font.getSize() * 72.0
/ device.getDPI().y);
fontData.setHeight(height);
// hack to ensure the newly created swt fonts will be rendered with the
// same height as the awt one
if (ensureSameSize) {
GC tmpGC = new GC(device);
Font tmpFont = new Font(device, fontData);
tmpGC.setFont(tmpFont);
if (tmpGC.textExtent(Az).x
> DUMMY_PANEL.getFontMetrics(font).stringWidth(Az)) {
while (tmpGC.textExtent(Az).x
> DUMMY_PANEL.getFontMetrics(font).stringWidth(Az)) {
tmpFont.dispose();
height--;
fontData.setHeight(height);
tmpFont = new Font(device, fontData);
tmpGC.setFont(tmpFont);
}
}
else if (tmpGC.textExtent(Az).x
< DUMMY_PANEL.getFontMetrics(font).stringWidth(Az)) {
while (tmpGC.textExtent(Az).x
< DUMMY_PANEL.getFontMetrics(font).stringWidth(Az)) {
tmpFont.dispose();
height++;
fontData.setHeight(height);
tmpFont = new Font(device, fontData);
tmpGC.setFont(tmpFont);
}
}
tmpFont.dispose();
tmpGC.dispose();
}
return fontData;
}
/**
* Create an awt font by converting as much information
* as possible from the provided swt <code>FontData</code>.
* <p>Generally speaking, given a font size, an swt font will
* display differently on the screen than the corresponding awt
* one. Because the SWT toolkit use native graphical ressources whenever
* it is possible, this fact is platform dependent. To address
* this issue, it is possible to enforce the method to return
* an awt font with the same height as the swt one.
*
* @param device The swt device being drawn on (display or gc device).
* @param fontData The swt font to convert.
* @param ensureSameSize A boolean used to enforce the same size
* (in pixels) between the swt font and the newly created awt font.
* @return An awt font converted from the provided swt font.
*/
public static java.awt.Font toAwtFont(Device device, FontData fontData,
boolean ensureSameSize) {
int height = (int) Math.round(fontData.getHeight() * device.getDPI().y
/ 72.0);
// hack to ensure the newly created awt fonts will be rendered with the
// same height as the swt one
if (ensureSameSize) {
GC tmpGC = new GC(device);
Font tmpFont = new Font(device, fontData);
tmpGC.setFont(tmpFont);
JPanel DUMMY_PANEL = new JPanel();
java.awt.Font tmpAwtFont = new java.awt.Font(fontData.getName(),
fontData.getStyle(), height);
if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
> tmpGC.textExtent(Az).x) {
while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
> tmpGC.textExtent(Az).x) {
height--;
tmpAwtFont = new java.awt.Font(fontData.getName(),
fontData.getStyle(), height);
}
}
else if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
< tmpGC.textExtent(Az).x) {
while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
< tmpGC.textExtent(Az).x) {
height++;
tmpAwtFont = new java.awt.Font(fontData.getName(),
fontData.getStyle(), height);
}
}
tmpFont.dispose();
tmpGC.dispose();
}
return new java.awt.Font(fontData.getName(), fontData.getStyle(),
height);
}
}
17. Create an awt font by converting as much information as possible from the provided swt Font.
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------
* SWTUtils.java
* -------------
* (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Rainer Blessing;
* David Gilbert (david.gilbert@object-refinery.ru);
* Christoph Beck.
*
* Changes
* -------
* 01-Aug-2006 : New class (HP);
* 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
* 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
* added a new convert method for mouse events (HP);
* 12-Jul-2007 : Improved the mouse event conversion with buttons
* and modifiers handling, patch sent by Christoph Beck (HP);
* 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
* 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
* convertAWTImageToSWT() (DG);
* 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
*
*/
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import javax.swing.JPanel;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
/**
* Utility class gathering some useful and general method.
* Mainly convert forth and back graphical stuff between
* awt and swt.
*/
public class SWTUtils {
private final static String Az = "ABCpqr";
/** A dummy JPanel used to provide font metrics. */
protected static final JPanel DUMMY_PANEL = new JPanel();
/**
* Create an awt font by converting as much information
* as possible from the provided swt <code>Font</code>.
*
* @param device The swt device to draw on (display or gc device).
* @param font The swt font to convert.
* @return An awt font converted from the provided swt font.
*/
public static java.awt.Font toAwtFont(Device device, Font font) {
FontData fontData = font.getFontData()[0];
return toAwtFont(device, fontData, true);
}
/**
* Creates an awt color instance to match the rgb values
* of the specified swt color.
*
* @param color The swt color to match.
* @return an awt color abject.
*/
public static java.awt.Color toAwtColor(Color color) {
return new java.awt.Color(color.getRed(), color.getGreen(),
color.getBlue());
}
/**
* Creates a swt color instance to match the rgb values
* of the specified awt paint. For now, this method test
* if the paint is a color and then return the adequate
* swt color. Otherwise plain black is assumed.
*
* @param device The swt device to draw on (display or gc device).
* @param paint The awt color to match.
* @return a swt color object.
*/
public static Color toSwtColor(Device device, java.awt.Paint paint) {
java.awt.Color color;
if (paint instanceof java.awt.Color) {
color = (java.awt.Color) paint;
}
else {
try {
throw new Exception("only color is supported at present... "
+ "setting paint to uniform black color");
}
catch (Exception e) {
e.printStackTrace();
color = new java.awt.Color(0, 0, 0);
}
}
return new org.eclipse.swt.graphics.Color(device,
color.getRed(), color.getGreen(), color.getBlue());
}
}
17. Create an awt font by converting as much information as possible from the provided swt FontData.
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------
* SWTUtils.java
* -------------
* (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Rainer Blessing;
* David Gilbert (david.gilbert@object-refinery.ru);
* Christoph Beck.
*
* Changes
* -------
* 01-Aug-2006 : New class (HP);
* 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
* 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
* added a new convert method for mouse events (HP);
* 12-Jul-2007 : Improved the mouse event conversion with buttons
* and modifiers handling, patch sent by Christoph Beck (HP);
* 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
* 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
* convertAWTImageToSWT() (DG);
* 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
*
*/
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import javax.swing.JPanel;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
/**
* Utility class gathering some useful and general method.
* Mainly convert forth and back graphical stuff between
* awt and swt.
*/
public class SWTUtils {
private final static String Az = "ABCpqr";
/** A dummy JPanel used to provide font metrics. */
protected static final JPanel DUMMY_PANEL = new JPanel();
/**
* Create a <code>FontData</code> object which encapsulate
* the essential data to create a swt font. The data is taken
* from the provided awt Font.
* <p>Generally speaking, given a font size, the returned swt font
* will display differently on the screen than the awt one.
* Because the SWT toolkit use native graphical resources whenever
* it is possible, this fact is platform dependent. To address
* this issue, it is possible to enforce the method to return
* a font with the same size (or at least as close as possible)
* as the awt one.
* <p>When the object is no more used, the user must explicitly
* call the dispose method on the returned font to free the
* operating system resources (the garbage collector won"t do it).
*
* @param device The swt device to draw on (display or gc device).
* @param font The awt font from which to get the data.
* @param ensureSameSize A boolean used to enforce the same size
* (in pixels) between the awt font and the newly created swt font.
* @return a <code>FontData</code> object.
*/
public static FontData toSwtFontData(Device device, java.awt.Font font,
boolean ensureSameSize) {
FontData fontData = new FontData();
fontData.setName(font.getFamily());
// SWT and AWT share the same style constants.
fontData.setStyle(font.getStyle());
// convert the font size (in pt for awt) to height in pixels for swt
int height = (int) Math.round(font.getSize() * 72.0
/ device.getDPI().y);
fontData.setHeight(height);
// hack to ensure the newly created swt fonts will be rendered with the
// same height as the awt one
if (ensureSameSize) {
GC tmpGC = new GC(device);
Font tmpFont = new Font(device, fontData);
tmpGC.setFont(tmpFont);
if (tmpGC.textExtent(Az).x
> DUMMY_PANEL.getFontMetrics(font).stringWidth(Az)) {
while (tmpGC.textExtent(Az).x
> DUMMY_PANEL.getFontMetrics(font).stringWidth(Az)) {
tmpFont.dispose();
height--;
fontData.setHeight(height);
tmpFont = new Font(device, fontData);
tmpGC.setFont(tmpFont);
}
}
else if (tmpGC.textExtent(Az).x
< DUMMY_PANEL.getFontMetrics(font).stringWidth(Az)) {
while (tmpGC.textExtent(Az).x
< DUMMY_PANEL.getFontMetrics(font).stringWidth(Az)) {
tmpFont.dispose();
height++;
fontData.setHeight(height);
tmpFont = new Font(device, fontData);
tmpGC.setFont(tmpFont);
}
}
tmpFont.dispose();
tmpGC.dispose();
}
return fontData;
}
/**
* Create an awt font by converting as much information
* as possible from the provided swt <code>FontData</code>.
* <p>Generally speaking, given a font size, an swt font will
* display differently on the screen than the corresponding awt
* one. Because the SWT toolkit use native graphical ressources whenever
* it is possible, this fact is platform dependent. To address
* this issue, it is possible to enforce the method to return
* an awt font with the same height as the swt one.
*
* @param device The swt device being drawn on (display or gc device).
* @param fontData The swt font to convert.
* @param ensureSameSize A boolean used to enforce the same size
* (in pixels) between the swt font and the newly created awt font.
* @return An awt font converted from the provided swt font.
*/
public static java.awt.Font toAwtFont(Device device, FontData fontData,
boolean ensureSameSize) {
int height = (int) Math.round(fontData.getHeight() * device.getDPI().y
/ 72.0);
// hack to ensure the newly created awt fonts will be rendered with the
// same height as the swt one
if (ensureSameSize) {
GC tmpGC = new GC(device);
Font tmpFont = new Font(device, fontData);
tmpGC.setFont(tmpFont);
JPanel DUMMY_PANEL = new JPanel();
java.awt.Font tmpAwtFont = new java.awt.Font(fontData.getName(),
fontData.getStyle(), height);
if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
> tmpGC.textExtent(Az).x) {
while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
> tmpGC.textExtent(Az).x) {
height--;
tmpAwtFont = new java.awt.Font(fontData.getName(),
fontData.getStyle(), height);
}
}
else if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
< tmpGC.textExtent(Az).x) {
while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
< tmpGC.textExtent(Az).x) {
height++;
tmpAwtFont = new java.awt.Font(fontData.getName(),
fontData.getStyle(), height);
}
}
tmpFont.dispose();
tmpGC.dispose();
}
return new java.awt.Font(fontData.getName(), fontData.getStyle(),
height);
}
}
17. Creates an awt color instance to match the rgb values of the specified swt color.
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------
* SWTUtils.java
* -------------
* (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Rainer Blessing;
* David Gilbert (david.gilbert@object-refinery.ru);
* Christoph Beck.
*
* Changes
* -------
* 01-Aug-2006 : New class (HP);
* 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
* 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
* added a new convert method for mouse events (HP);
* 12-Jul-2007 : Improved the mouse event conversion with buttons
* and modifiers handling, patch sent by Christoph Beck (HP);
* 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
* 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
* convertAWTImageToSWT() (DG);
* 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
*
*/
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import javax.swing.JPanel;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
/**
* Utility class gathering some useful and general method.
* Mainly convert forth and back graphical stuff between
* awt and swt.
*/
public class SWTUtils {
private final static String Az = "ABCpqr";
/** A dummy JPanel used to provide font metrics. */
protected static final JPanel DUMMY_PANEL = new JPanel();
/**
* Create an awt font by converting as much information
* as possible from the provided swt <code>Font</code>.
*
* @param device The swt device to draw on (display or gc device).
* @param font The swt font to convert.
* @return An awt font converted from the provided swt font.
*/
public static java.awt.Font toAwtFont(Device device, Font font) {
FontData fontData = font.getFontData()[0];
return toAwtFont(device, fontData, true);
}
/**
* Creates an awt color instance to match the rgb values
* of the specified swt color.
*
* @param color The swt color to match.
* @return an awt color abject.
*/
public static java.awt.Color toAwtColor(Color color) {
return new java.awt.Color(color.getRed(), color.getGreen(),
color.getBlue());
}
/**
* Creates a swt color instance to match the rgb values
* of the specified awt paint. For now, this method test
* if the paint is a color and then return the adequate
* swt color. Otherwise plain black is assumed.
*
* @param device The swt device to draw on (display or gc device).
* @param paint The awt color to match.
* @return a swt color object.
*/
public static Color toSwtColor(Device device, java.awt.Paint paint) {
java.awt.Color color;
if (paint instanceof java.awt.Color) {
color = (java.awt.Color) paint;
}
else {
try {
throw new Exception("only color is supported at present... "
+ "setting paint to uniform black color");
}
catch (Exception e) {
e.printStackTrace();
color = new java.awt.Color(0, 0, 0);
}
}
return new org.eclipse.swt.graphics.Color(device,
color.getRed(), color.getGreen(), color.getBlue());
}
}
17. Creates an AWT MouseEvent from a swt event.
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------
* SWTUtils.java
* -------------
* (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Rainer Blessing;
* David Gilbert (david.gilbert@object-refinery.ru);
* Christoph Beck.
*
* Changes
* -------
* 01-Aug-2006 : New class (HP);
* 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
* 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
* added a new convert method for mouse events (HP);
* 12-Jul-2007 : Improved the mouse event conversion with buttons
* and modifiers handling, patch sent by Christoph Beck (HP);
* 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
* 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
* convertAWTImageToSWT() (DG);
* 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
*
*/
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import javax.swing.JPanel;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
/**
* Utility class gathering some useful and general method.
* Mainly convert forth and back graphical stuff between
* awt and swt.
*/
public class SWTUtils {
private final static String Az = "ABCpqr";
/** A dummy JPanel used to provide font metrics. */
protected static final JPanel DUMMY_PANEL = new JPanel();
/**
* Creates an AWT <code>MouseEvent</code> from a swt event.
* This method helps passing SWT mouse event to awt components.
* @param event The swt event.
* @return A AWT mouse event based on the given SWT event.
*/
public static MouseEvent toAwtMouseEvent(org.eclipse.swt.events.MouseEvent event) {
int button = MouseEvent.NOBUTTON;
switch (event.button) {
case 1: button = MouseEvent.BUTTON1; break;
case 2: button = MouseEvent.BUTTON2; break;
case 3: button = MouseEvent.BUTTON3; break;
}
int modifiers = 0;
if ((event.stateMask & SWT.CTRL) != 0) {
modifiers |= InputEvent.CTRL_DOWN_MASK;
}
if ((event.stateMask & SWT.SHIFT) != 0) {
modifiers |= InputEvent.SHIFT_DOWN_MASK;
}
if ((event.stateMask & SWT.ALT) != 0) {
modifiers |= InputEvent.ALT_DOWN_MASK;
}
MouseEvent awtMouseEvent = new MouseEvent(DUMMY_PANEL, event.hashCode(),
event.time, modifiers, event.x, event.y, 1, false, button);
return awtMouseEvent;
}
/**
* Converts an AWT image to SWT.
*
* @param image the image (<code>null</code> not permitted).
*
* @return Image data.
*/
public static ImageData convertAWTImageToSWT(Image image) {
if (image == null) {
throw new IllegalArgumentException("Null "image" argument.");
}
int w = image.getWidth(null);
int h = image.getHeight(null);
if (w == -1 || h == -1) {
return null;
}
BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics g = bi.getGraphics();
g.drawImage(image, 0, 0, null);
g.dispose();
return convertToSWT(bi);
}
/**
* Converts a buffered image to SWT <code>ImageData</code>.
*
* @param bufferedImage the buffered image (<code>null</code> not
* permitted).
*
* @return The image data.
*/
public static ImageData convertToSWT(BufferedImage bufferedImage) {
if (bufferedImage.getColorModel() instanceof DirectColorModel) {
DirectColorModel colorModel
= (DirectColorModel) bufferedImage.getColorModel();
PaletteData palette = new PaletteData(colorModel.getRedMask(),
colorModel.getGreenMask(), colorModel.getBlueMask());
ImageData data = new ImageData(bufferedImage.getWidth(),
bufferedImage.getHeight(), colorModel.getPixelSize(),
palette);
WritableRaster raster = bufferedImage.getRaster();
int[] pixelArray = new int[3];
for (int y = 0; y < data.height; y++) {
for (int x = 0; x < data.width; x++) {
raster.getPixel(x, y, pixelArray);
int pixel = palette.getPixel(new RGB(pixelArray[0],
pixelArray[1], pixelArray[2]));
data.setPixel(x, y, pixel);
}
}
return data;
}
else if (bufferedImage.getColorModel() instanceof IndexColorModel) {
IndexColorModel colorModel = (IndexColorModel)
bufferedImage.getColorModel();
int size = colorModel.getMapSize();
byte[] reds = new byte[size];
byte[] greens = new byte[size];
byte[] blues = new byte[size];
colorModel.getReds(reds);
colorModel.getGreens(greens);
colorModel.getBlues(blues);
RGB[] rgbs = new RGB[size];
for (int i = 0; i < rgbs.length; i++) {
rgbs[i] = new RGB(reds[i] & 0xFF, greens[i] & 0xFF,
blues[i] & 0xFF);
}
PaletteData palette = new PaletteData(rgbs);
ImageData data = new ImageData(bufferedImage.getWidth(),
bufferedImage.getHeight(), colorModel.getPixelSize(),
palette);
data.transparentPixel = colorModel.getTransparentPixel();
WritableRaster raster = bufferedImage.getRaster();
int[] pixelArray = new int[1];
for (int y = 0; y < data.height; y++) {
for (int x = 0; x < data.width; x++) {
raster.getPixel(x, y, pixelArray);
data.setPixel(x, y, pixelArray[0]);
}
}
return data;
}
return null;
}
}
17. Creates a swt color instance to match the rgb values of the specified awt color. alpha channel is not supported.
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------
* SWTUtils.java
* -------------
* (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Rainer Blessing;
* David Gilbert (david.gilbert@object-refinery.ru);
* Christoph Beck.
*
* Changes
* -------
* 01-Aug-2006 : New class (HP);
* 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
* 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
* added a new convert method for mouse events (HP);
* 12-Jul-2007 : Improved the mouse event conversion with buttons
* and modifiers handling, patch sent by Christoph Beck (HP);
* 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
* 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
* convertAWTImageToSWT() (DG);
* 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
*
*/
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import javax.swing.JPanel;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
/**
* Utility class gathering some useful and general method.
* Mainly convert forth and back graphical stuff between
* awt and swt.
*/
public class SWTUtils {
private final static String Az = "ABCpqr";
/** A dummy JPanel used to provide font metrics. */
protected static final JPanel DUMMY_PANEL = new JPanel();
/**
* Creates a swt color instance to match the rgb values
* of the specified awt color. alpha channel is not supported.
* Note that the dispose method will need to be called on the
* returned object.
*
* @param device The swt device to draw on (display or gc device).
* @param color The awt color to match.
* @return a swt color object.
*/
public static Color toSwtColor(Device device, java.awt.Color color) {
return new org.eclipse.swt.graphics.Color(device,
color.getRed(), color.getGreen(), color.getBlue());
}
/**
* Transform an awt Rectangle2d instance into a swt one.
* The coordinates are rounded to integer for the swt object.
* @param rect2d The awt rectangle to map.
* @return an swt <code>Rectangle</code> object.
*/
public static Rectangle toSwtRectangle(Rectangle2D rect2d) {
return new Rectangle(
(int) Math.round(rect2d.getMinX()),
(int) Math.round(rect2d.getMinY()),
(int) Math.round(rect2d.getWidth()),
(int) Math.round(rect2d.getHeight()));
}
/**
* Transform a swt Rectangle instance into an awt one.
* @param rect the swt <code>Rectangle</code>
* @return a Rectangle2D.Double instance with
* the eappropriate location and size.
*/
public static Rectangle2D toAwtRectangle(Rectangle rect) {
Rectangle2D rect2d = new Rectangle2D.Double();
rect2d.setRect(rect.x, rect.y, rect.width, rect.height);
return rect2d;
}
/**
* Returns an AWT point with the same coordinates as the specified
* SWT point.
*
* @param p the SWT point (<code>null</code> not permitted).
*
* @return An AWT point with the same coordinates as <code>p</code>.
*
* @see #toSwtPoint(java.awt.Point)
*/
public static Point2D toAwtPoint(Point p) {
return new java.awt.Point(p.x, p.y);
}
/**
* Returns an SWT point with the same coordinates as the specified
* AWT point.
*
* @param p the AWT point (<code>null</code> not permitted).
*
* @return An SWT point with the same coordinates as <code>p</code>.
*
* @see #toAwtPoint(Point)
*/
public static Point toSwtPoint(java.awt.Point p) {
return new Point(p.x, p.y);
}
/**
* Returns an SWT point with the same coordinates as the specified AWT
* point (rounded to integer values).
*
* @param p the AWT point (<code>null</code> not permitted).
*
* @return An SWT point with the same coordinates as <code>p</code>.
*
* @see #toAwtPoint(Point)
*/
public static Point toSwtPoint(java.awt.geom.Point2D p) {
return new Point((int) Math.round(p.getX()),
(int) Math.round(p.getY()));
}
}
17. Creates a swt color instance to match the rgb values of the specified awt paint.
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------
* SWTUtils.java
* -------------
* (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Rainer Blessing;
* David Gilbert (david.gilbert@object-refinery.ru);
* Christoph Beck.
*
* Changes
* -------
* 01-Aug-2006 : New class (HP);
* 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
* 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
* added a new convert method for mouse events (HP);
* 12-Jul-2007 : Improved the mouse event conversion with buttons
* and modifiers handling, patch sent by Christoph Beck (HP);
* 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
* 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
* convertAWTImageToSWT() (DG);
* 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
*
*/
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import javax.swing.JPanel;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
/**
* Utility class gathering some useful and general method.
* Mainly convert forth and back graphical stuff between
* awt and swt.
*/
public class SWTUtils {
private final static String Az = "ABCpqr";
/** A dummy JPanel used to provide font metrics. */
protected static final JPanel DUMMY_PANEL = new JPanel();
/**
* Create an awt font by converting as much information
* as possible from the provided swt <code>Font</code>.
*
* @param device The swt device to draw on (display or gc device).
* @param font The swt font to convert.
* @return An awt font converted from the provided swt font.
*/
public static java.awt.Font toAwtFont(Device device, Font font) {
FontData fontData = font.getFontData()[0];
return toAwtFont(device, fontData, true);
}
/**
* Creates an awt color instance to match the rgb values
* of the specified swt color.
*
* @param color The swt color to match.
* @return an awt color abject.
*/
public static java.awt.Color toAwtColor(Color color) {
return new java.awt.Color(color.getRed(), color.getGreen(),
color.getBlue());
}
/**
* Creates a swt color instance to match the rgb values
* of the specified awt paint. For now, this method test
* if the paint is a color and then return the adequate
* swt color. Otherwise plain black is assumed.
*
* @param device The swt device to draw on (display or gc device).
* @param paint The awt color to match.
* @return a swt color object.
*/
public static Color toSwtColor(Device device, java.awt.Paint paint) {
java.awt.Color color;
if (paint instanceof java.awt.Color) {
color = (java.awt.Color) paint;
}
else {
try {
throw new Exception("only color is supported at present... "
+ "setting paint to uniform black color");
}
catch (Exception e) {
e.printStackTrace();
color = new java.awt.Color(0, 0, 0);
}
}
return new org.eclipse.swt.graphics.Color(device,
color.getRed(), color.getGreen(), color.getBlue());
}
}
17. Draw Graphics2D stuff on a swt composite
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2009, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------------
* SWTGraphics2D.java
* ------------------
* (C) Copyright 2006-2008, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Cedric Chabanois (cchabanois AT no-log.org);
* David Gilbert (for Object Refinery Limited);
* Ronnie Duan (see bug report 2583891);
*
* Changes
* -------
* 14-Jun-2006 : New class (HP);
* 29-Jan-2007 : Fixed the fillRect method (HP);
* 31-Jan-2007 : Moved the dummy JPanel to SWTUtils.java,
* implemented the drawLine method (HP);
* 07-Apr-2007 : Dispose some of the swt ressources,
* thanks to silent for pointing this out (HP);
* 23-May-2007 : Removed resource leaks by adding a resource pool (CC);
* 15-Jun-2007 : Fixed compile error for JDK 1.4 (DG);
* 22-Oct-2007 : Implemented clipping (HP);
* 22-Oct-2007 : Implemented some AlphaComposite support (HP);
* 23-Oct-2007 : Added mechanism for storing RenderingHints (which are
* still ignored at this point) (DG);
* 23-Oct-2007 : Implemented drawPolygon(), drawPolyline(), drawOval(),
* fillOval(), drawArc() and fillArc() (DG);
* 27-Nov-2007 : Implemented a couple of drawImage() methods (DG);
* 18-Nov-2008 : Check for GradientPaint in setPaint() method (DG);
* 27-Feb-2009 : Implemented fillPolygon() - see bug 2583891 (DG);
*
*/
import java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.ruposite;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.Image;
import java.awt.Paint;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.RenderingHints.Key;
import java.awt.font.FontRenderContext;
import java.awt.font.GlyphVector;
import java.awt.geom.AffineTransform;
import java.awt.geom.PathIterator;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.BufferedImageOp;
import java.awt.image.ImageObserver;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.RenderableImage;
import java.text.AttributedCharacterIterator;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.Path;
import org.eclipse.swt.graphics.Resource;
import org.eclipse.swt.graphics.Transform;
/**
* This is a class utility to draw Graphics2D stuff on a swt composite.
* It is presently developed to use JFreeChart with the Standard
* Widget Toolkit but may be of a wider use later.
*/
public class SWTGraphics2D extends Graphics2D {
/** The swt graphic composite */
private GC gc;
/**
* The rendering hints. For now, these are not used, but at least the
* basic mechanism is present.
*/
private RenderingHints hints;
/** A reference to the compositing rule to apply. This is necessary
* due to the poor compositing interface of the SWT toolkit. */
private java.awt.ruposite composite;
/** A HashMap to store the Swt color resources. */
private Map colorsPool = new HashMap();
/** A HashMap to store the Swt font resources. */
private Map fontsPool = new HashMap();
/** A HashMap to store the Swt transform resources. */
private Map transformsPool = new HashMap();
/** A List to store the Swt resources. */
private List resourcePool = new ArrayList();
/**
* Creates a new instance.
*
* @param gc the graphics context.
*/
public SWTGraphics2D(GC gc) {
super();
this.gc = gc;
this.hints = new RenderingHints(null);
this.ruposite = AlphaComposite.getInstance(AlphaComposite.SRC, 1.0f);
}
/**
* Not implemented yet - see {@link Graphics#create()}.
*
* @return <code>null</code>.
*/
public Graphics create() {
// TODO Auto-generated method stub
return null;
}
/**
* Not implemented yet - see {@link Graphics2D#getDeviceConfiguration()}.
*
* @return <code>null</code>.
*/
public GraphicsConfiguration getDeviceConfiguration() {
// TODO Auto-generated method stub
return null;
}
/**
* Returns the current value for the specified hint key, or
* <code>null</code> if no value is set.
*
* @param hintKey the hint key (<code>null</code> permitted).
*
* @return The hint value, or <code>null</code>.
*
* @see #setRenderingHint(RenderingHints.Key, Object)
*/
public Object getRenderingHint(Key hintKey) {
return this.hints.get(hintKey);
}
/**
* Sets the value for a rendering hint. For now, this graphics context
* ignores all hints.
*
* @param hintKey the key (<code>null</code> not permitted).
* @param hintValue the value (must be compatible with the specified key).
*
* @throws IllegalArgumentException if <code>hintValue</code> is not
* compatible with the <code>hintKey</code>.
*
* @see #getRenderingHint(RenderingHints.Key)
*/
public void setRenderingHint(Key hintKey, Object hintValue) {
this.hints.put(hintKey, hintValue);
}
/**
* Returns a copy of the hints collection for this graphics context.
*
* @return A copy of the hints collection.
*/
public RenderingHints getRenderingHints() {
return (RenderingHints) this.hints.clone();
}
/**
* Adds the hints in the specified map to the graphics context, replacing
* any existing hints. For now, this graphics context ignores all hints.
*
* @param hints the hints (<code>null</code> not permitted).
*
* @see #setRenderingHints(Map)
*/
public void addRenderingHints(Map hints) {
this.hints.putAll(hints);
}
/**
* Replaces the existing hints with those contained in the specified
* map. Note that, for now, this graphics context ignores all hints.
*
* @param hints the hints (<code>null</code> not permitted).
*
* @see #addRenderingHints(Map)
*/
public void setRenderingHints(Map hints) {
if (hints == null) {
throw new NullPointerException("Null "hints" argument.");
}
this.hints = new RenderingHints(hints);
}
/**
* Returns the current paint for this graphics context.
*
* @return The current paint.
*
* @see #setPaint(Paint)
*/
public Paint getPaint() {
// TODO: it might be a good idea to keep a reference to the color
// specified in setPaint() or setColor(), rather than creating a
// new object every time getPaint() is called.
return SWTUtils.toAwtColor(this.gc.getForeground());
}
/**
* Sets the paint for this graphics context. For now, this graphics
* context only supports instances of {@link Color} or
* {@link GradientPaint} (in the latter case there is no real gradient
* support, the paint used is the <code>Color</code> returned by
* <code>getColor1()</code>).
*
* @param paint the paint (<code>null</code> not permitted).
*
* @see #getPaint()
* @see #setColor(Color)
*/
public void setPaint(Paint paint) {
if (paint instanceof Color) {
setColor((Color) paint);
}
else if (paint instanceof GradientPaint) {
GradientPaint gp = (GradientPaint) paint;
setColor(gp.getColor1());
}
else {
throw new RuntimeException("Can only handle "Color" at present.");
}
}
/**
* Returns the current color for this graphics context.
*
* @return The current color.
*
* @see #setColor(Color)
*/
public Color getColor() {
// TODO: it might be a good idea to keep a reference to the color
// specified in setPaint() or setColor(), rather than creating a
// new object every time getPaint() is called.
return SWTUtils.toAwtColor(this.gc.getForeground());
}
/**
* Sets the current color for this graphics context.
*
* @param color the color.
*
* @see #getColor()
*/
public void setColor(Color color) {
org.eclipse.swt.graphics.Color swtColor = getSwtColorFromPool(color);
this.gc.setForeground(swtColor);
// handle transparency and compositing.
if (this.ruposite instanceof AlphaComposite) {
AlphaComposite acomp = (AlphaComposite) this.ruposite;
switch (acomp.getRule()) {
case AlphaComposite.SRC_OVER:
this.gc.setAlpha((int) (color.getAlpha() * acomp.getAlpha()));
break;
default:
this.gc.setAlpha(color.getAlpha());
break;
}
}
}
/**
* Sets the background colour.
*
* @param color the colour.
*/
public void setBackground(Color color) {
org.eclipse.swt.graphics.Color swtColor = getSwtColorFromPool(color);
this.gc.setBackground(swtColor);
}
/**
* Returns the background colour.
*
* @return The background colour.
*/
public Color getBackground() {
return SWTUtils.toAwtColor(this.gc.getBackground());
}
/**
* Not implemented - see {@link Graphics#setPaintMode()}.
*/
public void setPaintMode() {
// TODO Auto-generated method stub
}
/**
* Not implemented - see {@link Graphics#setXORMode(Color)}.
*
* @param color the colour.
*/
public void setXORMode(Color color) {
// TODO Auto-generated method stub
}
/**
* Returns the current composite.
*
* @return The current composite.
*
* @see #setComposite(Composite)
*/
public Composite getComposite() {
return this.ruposite;
}
/**
* Sets the current composite. This implementation currently supports
* only the {@link AlphaComposite} class.
*
* @param comp the composite.
*/
public void setComposite(Composite comp) {
this.ruposite = comp;
if (comp instanceof AlphaComposite) {
AlphaComposite acomp = (AlphaComposite) comp;
int alpha = (int) (acomp.getAlpha() * 0xFF);
this.gc.setAlpha(alpha);
}
else {
System.out.println("warning, can only handle alpha composite at the moment.");
}
}
/**
* Returns the current stroke for this graphics context.
*
* @return The current stroke.
*
* @see #setStroke(Stroke)
*/
public Stroke getStroke() {
return new BasicStroke(this.gc.getLineWidth(), this.gc.getLineCap(),
this.gc.getLineJoin());
}
/**
* Sets the stroke for this graphics context. For now, this implementation
* only recognises the {@link BasicStroke} class.
*
* @param stroke the stroke (<code>null</code> not permitted).
*
* @see #getStroke()
*/
public void setStroke(Stroke stroke) {
if (stroke instanceof BasicStroke) {
BasicStroke bs = (BasicStroke) stroke;
// linewidth
this.gc.setLineWidth((int) bs.getLineWidth());
// line join
switch (bs.getLineJoin()) {
case BasicStroke.JOIN_BEVEL :
this.gc.setLineJoin(SWT.JOIN_BEVEL);
break;
case BasicStroke.JOIN_MITER :
this.gc.setLineJoin(SWT.JOIN_MITER);
break;
case BasicStroke.JOIN_ROUND :
this.gc.setLineJoin(SWT.JOIN_ROUND);
break;
}
// line cap
switch (bs.getEndCap()) {
case BasicStroke.CAP_BUTT :
this.gc.setLineCap(SWT.CAP_FLAT);
break;
case BasicStroke.CAP_ROUND :
this.gc.setLineCap(SWT.CAP_ROUND);
break;
case BasicStroke.CAP_SQUARE :
this.gc.setLineCap(SWT.CAP_SQUARE);
break;
}
// set the line style to solid by default
this.gc.setLineStyle(SWT.LINE_SOLID);
// apply dash style if any
float[] dashes = bs.getDashArray();
if (dashes != null) {
int[] swtDashes = new int[dashes.length];
for (int i = 0; i < swtDashes.length; i++) {
swtDashes[i] = (int) dashes[i];
}
this.gc.setLineDash(swtDashes);
}
}
else {
throw new RuntimeException(
"Can only handle "Basic Stroke" at present.");
}
}
/**
* Applies the specified clip.
*
* @param s the shape for the clip.
*/
public void clip(Shape s) {
Path path = toSwtPath(s);
this.gc.setClipping(path);
path.dispose();
}
/**
* Returns the clip bounds.
*
* @return The clip bounds.
*/
public Rectangle getClipBounds() {
org.eclipse.swt.graphics.Rectangle clip = this.gc.getClipping();
return new Rectangle(clip.x, clip.y, clip.width, clip.height);
}
/**
* Sets the clipping to the intersection of the current clip region and
* the specified rectangle.
*
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param width the width.
* @param height the height.
*/
public void clipRect(int x, int y, int width, int height) {
org.eclipse.swt.graphics.Rectangle clip = this.gc.getClipping();
clip.intersects(x, y, width, height);
this.gc.setClipping(clip);
}
/**
* Returns the current clip.
*
* @return The current clip.
*/
public Shape getClip() {
return SWTUtils.toAwtRectangle(this.gc.getClipping());
}
/**
* Sets the clip region.
*
* @param clip the clip.
*/
public void setClip(Shape clip) {
if (clip == null) {
return;
}
Path clipPath = toSwtPath(clip);
this.gc.setClipping(clipPath);
clipPath.dispose();
}
/**
* Sets the clip region to the specified rectangle.
*
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param width the width.
* @param height the height.
*/
public void setClip(int x, int y, int width, int height) {
this.gc.setClipping(x, y, width, height);
}
/**
* Returns the current transform.
*
* @return The current transform.
*/
public AffineTransform getTransform() {
Transform swtTransform = new Transform(this.gc.getDevice());
this.gc.getTransform(swtTransform);
AffineTransform awtTransform = toAwtTransform(swtTransform);
swtTransform.dispose();
return awtTransform;
}
/**
* Sets the current transform.
*
* @param t the transform.
*/
public void setTransform(AffineTransform t) {
Transform transform = getSwtTransformFromPool(t);
this.gc.setTransform(transform);
}
/**
* Concatenates the specified transform to the existing transform.
*
* @param t the transform.
*/
public void transform(AffineTransform t) {
Transform swtTransform = new Transform(this.gc.getDevice());
this.gc.getTransform(swtTransform);
swtTransform.multiply(getSwtTransformFromPool(t));
this.gc.setTransform(swtTransform);
swtTransform.dispose();
}
/**
* Applies a translation.
*
* @param x the translation along the x-axis.
* @param y the translation along the y-axis.
*/
public void translate(int x, int y) {
Transform swtTransform = new Transform(this.gc.getDevice());
this.gc.getTransform(swtTransform);
swtTransform.translate(x, y);
this.gc.setTransform(swtTransform);
swtTransform.dispose();
}
/**
* Applies a translation.
*
* @param tx the translation along the x-axis.
* @param ty the translation along the y-axis.
*/
public void translate(double tx, double ty) {
translate((int) tx, (int) ty);
}
/**
* Applies a rotation transform.
*
* @param theta the angle of rotation.
*/
public void rotate(double theta) {
Transform swtTransform = new Transform(this.gc.getDevice());
this.gc.getTransform(swtTransform);
swtTransform.rotate((float) (theta * 180 / Math.PI));
this.gc.setTransform(swtTransform);
swtTransform.dispose();
}
/**
* Not implemented - see {@link Graphics2D#rotate(double, double, double)}.
*
* @see java.awt.Graphics2D#rotate(double, double, double)
*/
public void rotate(double theta, double x, double y) {
// TODO Auto-generated method stub
}
/**
* Applies a scale transform.
*
* @param scaleX the scale factor along the x-axis.
* @param scaleY the scale factor along the y-axis.
*/
public void scale(double scaleX, double scaleY) {
Transform swtTransform = new Transform(this.gc.getDevice());
this.gc.getTransform(swtTransform);
swtTransform.scale((float) scaleX, (float) scaleY);
this.gc.setTransform(swtTransform);
swtTransform.dispose();
}
/**
* Applies a shear transform.
*
* @param shearX the x-factor.
* @param shearY the y-factor.
*/
public void shear(double shearX, double shearY) {
Transform swtTransform = new Transform(this.gc.getDevice());
this.gc.getTransform(swtTransform);
Transform shear = new Transform(this.gc.getDevice(), 1f, (float) shearX,
(float) shearY, 1f, 0, 0);
swtTransform.multiply(shear);
this.gc.setTransform(swtTransform);
swtTransform.dispose();
}
/**
* Draws the outline of the specified shape using the current stroke and
* paint settings.
*
* @param shape the shape (<code>null</code> not permitted).
*
* @see #getPaint()
* @see #getStroke()
* @see #fill(Shape)
*/
public void draw(Shape shape) {
Path path = toSwtPath(shape);
this.gc.drawPath(path);
path.dispose();
}
/**
* Draws a line from (x1, y1) to (x2, y2) using the current stroke
* and paint settings.
*
* @param x1 the x-coordinate for the starting point.
* @param y1 the y-coordinate for the starting point.
* @param x2 the x-coordinate for the ending point.
* @param y2 the y-coordinate for the ending point.
*
* @see #draw(Shape)
*/
public void drawLine(int x1, int y1, int x2, int y2) {
this.gc.drawLine(x1, y1, x2, y2);
}
/**
* Draws the outline of the polygon specified by the given points, using
* the current paint and stroke settings.
*
* @param xPoints the x-coordinates.
* @param yPoints the y-coordinates.
* @param npoints the number of points in the polygon.
*
* @see #draw(Shape)
*/
public void drawPolygon(int [] xPoints, int [] yPoints, int npoints) {
drawPolyline(xPoints, yPoints, npoints);
if (npoints > 1) {
this.gc.drawLine(xPoints[npoints - 1], yPoints[npoints - 1],
xPoints[0], yPoints[0]);
}
}
/**
* Draws a sequence of connected lines specified by the given points, using
* the current paint and stroke settings.
*
* @param xPoints the x-coordinates.
* @param yPoints the y-coordinates.
* @param npoints the number of points in the polygon.
*
* @see #draw(Shape)
*/
public void drawPolyline(int [] xPoints, int [] yPoints, int npoints) {
if (npoints > 1) {
int x0 = xPoints[0];
int y0 = yPoints[0];
int x1 = 0, y1 = 0;
for (int i = 1; i < npoints; i++) {
x1 = xPoints[i];
y1 = yPoints[i];
this.gc.drawLine(x0, y0, x1, y1);
x0 = x1;
y0 = y1;
}
}
}
/**
* Draws an oval that fits within the specified rectangular region.
*
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param width the frame width.
* @param height the frame height.
*
* @see #fillOval(int, int, int, int)
* @see #draw(Shape)
*/
public void drawOval(int x, int y, int width, int height) {
this.gc.drawOval(x, y, width - 1, height - 1);
}
/**
* Draws an arc that is part of an ellipse that fits within the specified
* framing rectangle.
*
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param width the frame width.
* @param height the frame height.
* @param arcStart the arc starting point, in degrees.
* @param arcAngle the extent of the arc.
*
* @see #fillArc(int, int, int, int, int, int)
*/
public void drawArc(int x, int y, int width, int height, int arcStart,
int arcAngle) {
this.gc.drawArc(x, y, width - 1, height - 1, arcStart, arcAngle);
}
/**
* Draws a rectangle with rounded corners that fits within the specified
* framing rectangle.
*
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param width the frame width.
* @param height the frame height.
* @param arcWidth the width of the arc defining the roundedness of the
* rectangle"s corners.
* @param arcHeight the height of the arc defining the roundedness of the
* rectangle"s corners.
*
* @see #fillRoundRect(int, int, int, int, int, int)
*/
public void drawRoundRect(int x, int y, int width, int height,
int arcWidth, int arcHeight) {
this.gc.drawRoundRectangle(x, y, width - 1, height - 1, arcWidth,
arcHeight);
}
/**
* Fills the specified shape using the current paint.
*
* @param shape the shape (<code>null</code> not permitted).
*
* @see #getPaint()
* @see #draw(Shape)
*/
public void fill(Shape shape) {
Path path = toSwtPath(shape);
// Note that for consistency with the AWT implementation, it is
// necessary to switch temporarily the foreground and background
// colours
switchColors();
this.gc.fillPath(path);
switchColors();
path.dispose();
}
/**
* Fill a rectangle area on the swt graphic composite.
* The <code>fillRectangle</code> method of the <code>GC</code>
* class uses the background color so we must switch colors.
* @see java.awt.Graphics#fillRect(int, int, int, int)
*/
public void fillRect(int x, int y, int width, int height) {
this.switchColors();
this.gc.fillRectangle(x, y, width, height);
this.switchColors();
}
/**
* Fills the specified rectangle with the current background colour.
*
* @param x the x-coordinate for the rectangle.
* @param y the y-coordinate for the rectangle.
* @param width the width.
* @param height the height.
*
* @see #fillRect(int, int, int, int)
*/
public void clearRect(int x, int y, int width, int height) {
Paint saved = getPaint();
setPaint(getBackground());
fillRect(x, y, width, height);
setPaint(saved);
}
/**
* Fills the specified polygon.
*
* @param xPoints the x-coordinates.
* @param yPoints the y-coordinates.
* @param npoints the number of points.
*/
public void fillPolygon(int[] xPoints, int[] yPoints, int npoints) {
int[] pointArray = new int[npoints * 2];
for (int i = 0; i < npoints; i++) {
pointArray[2 * i] = xPoints[i];
pointArray[2 * i + 1] = yPoints[i];
}
switchColors();
this.gc.fillPolygon(pointArray);
switchColors();
}
/**
* Draws a rectangle with rounded corners that fits within the specified
* framing rectangle.
*
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param width the frame width.
* @param height the frame height.
* @param arcWidth the width of the arc defining the roundedness of the
* rectangle"s corners.
* @param arcHeight the height of the arc defining the roundedness of the
* rectangle"s corners.
*
* @see #drawRoundRect(int, int, int, int, int, int)
*/
public void fillRoundRect(int x, int y, int width, int height,
int arcWidth, int arcHeight) {
switchColors();
this.gc.fillRoundRectangle(x, y, width - 1, height - 1, arcWidth,
arcHeight);
switchColors();
}
/**
* Fills an oval that fits within the specified rectangular region.
*
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param width the frame width.
* @param height the frame height.
*
* @see #drawOval(int, int, int, int)
* @see #fill(Shape)
*/
public void fillOval(int x, int y, int width, int height) {
switchColors();
this.gc.fillOval(x, y, width - 1, height - 1);
switchColors();
}
/**
* Fills an arc that is part of an ellipse that fits within the specified
* framing rectangle.
*
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param width the frame width.
* @param height the frame height.
* @param arcStart the arc starting point, in degrees.
* @param arcAngle the extent of the arc.
*
* @see #drawArc(int, int, int, int, int, int)
*/
public void fillArc(int x, int y, int width, int height, int arcStart,
int arcAngle) {
switchColors();
this.gc.fillArc(x, y, width - 1, height - 1, arcStart, arcAngle);
switchColors();
}
/**
* Returns the font in form of an awt font created
* with the parameters of the font of the swt graphic
* composite.
* @see java.awt.Graphics#getFont()
*/
public Font getFont() {
// retrieve the swt font description in an os indept way
FontData[] fontData = this.gc.getFont().getFontData();
// create a new awt font with the appropiate data
return SWTUtils.toAwtFont(this.gc.getDevice(), fontData[0], true);
}
/**
* Set the font swt graphic composite from the specified
* awt font. Be careful that the newly created swt font
* must be disposed separately.
* @see java.awt.Graphics#setFont(java.awt.Font)
*/
public void setFont(Font font) {
org.eclipse.swt.graphics.Font swtFont = getSwtFontFromPool(font);
this.gc.setFont(swtFont);
}
/**
* Returns the font metrics.
*
* @param font the font.
*
* @return The font metrics.
*/
public FontMetrics getFontMetrics(Font font) {
return SWTUtils.DUMMY_PANEL.getFontMetrics(font);
}
/**
* Returns the font render context.
*
* @return The font render context.
*/
public FontRenderContext getFontRenderContext() {
FontRenderContext fontRenderContext = new FontRenderContext(
new AffineTransform(), true, true);
return fontRenderContext;
}
/**
* Not implemented - see {@link Graphics2D#drawGlyphVector(GlyphVector,
* float, float)}.
*/
public void drawGlyphVector(GlyphVector g, float x, float y) {
// TODO Auto-generated method stub
}
/**
* Draws a string on the receiver. note that
* to be consistent with the awt method,
* the y has to be modified with the ascent of the font.
*
* @see java.awt.Graphics#drawString(java.lang.String, int, int)
*/
public void drawString(String text, int x, int y) {
float fm = this.gc.getFontMetrics().getAscent();
this.gc.drawString(text, x, (int) (y - fm), true);
}
/**
* Draws a string at the specified position.
*
* @param text the string.
* @param x the x-coordinate.
* @param y the y-coordinate.
*/
public void drawString(String text, float x, float y) {
float fm = this.gc.getFontMetrics().getAscent();
this.gc.drawString(text, (int) x, (int) (y - fm), true);
}
/**
* Draws a string at the specified position.
*
* @param iterator the string.
* @param x the x-coordinate.
* @param y the y-coordinate.
*/
public void drawString(AttributedCharacterIterator iterator, int x, int y) {
// TODO Auto-generated method stub
}
/**
* Draws a string at the specified position.
*
* @param iterator the string.
* @param x the x-coordinate.
* @param y the y-coordinate.
*/
public void drawString(AttributedCharacterIterator iterator, float x,
float y) {
// TODO Auto-generated method stub
}
/**
* Not implemented - see {@link Graphics2D#hit(Rectangle, Shape, boolean)}.
*
* @return <code>false</code>.
*/
public boolean hit(Rectangle rect, Shape text, boolean onStroke) {
// TODO Auto-generated method stub
return false;
}
/**
* Not implemented - see {@link Graphics#copyArea(int, int, int, int, int,
* int)}.
*/
public void copyArea(int x, int y, int width, int height, int dx, int dy) {
// TODO Auto-generated method stub
}
/**
* Not implemented - see {@link Graphics2D#drawImage(Image,
* AffineTransform, ImageObserver)}.
*
* @param image the image.
* @param xform the transform.
* @param obs an image observer.
*
* @return A boolean.
*/
public boolean drawImage(Image image, AffineTransform xform,
ImageObserver obs) {
// TODO Auto-generated method stub
return false;
}
/**
* Draws an image.
*
* @param image the image.
* @param op the image operation.
* @param x the x-coordinate.
* @param y the y-coordinate.
*/
public void drawImage(BufferedImage image, BufferedImageOp op, int x,
int y) {
org.eclipse.swt.graphics.Image im = new org.eclipse.swt.graphics.Image(
this.gc.getDevice(), SWTUtils.convertToSWT(image));
this.gc.drawImage(im, x, y);
im.dispose();
}
/**
* Draws an SWT image with the top left corner of the image aligned to the
* point (x, y).
*
* @param image the image.
* @param x the x-coordinate.
* @param y the y-coordinate.
*/
public void drawImage(org.eclipse.swt.graphics.Image image, int x, int y) {
this.gc.drawImage(image, x, y);
}
/**
* Not implemented - see {@link Graphics2D#drawRenderedImage(RenderedImage,
* AffineTransform)}.
*
* @param image the image.
* @param xform the transform.
*/
public void drawRenderedImage(RenderedImage image, AffineTransform xform) {
// TODO Auto-generated method stub
}
/**
* Not implemented - see {@link Graphics2D#drawRenderableImage(
* RenderableImage, AffineTransform)}.
*
* @param image the image.
* @param xform the transform.
*/
public void drawRenderableImage(RenderableImage image,
AffineTransform xform) {
// TODO Auto-generated method stub
}
/**
* Draws an image with the top left corner aligned to the point (x, y).
*
* @param image the image.
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param observer ignored here.
*
* @return <code>true</code> if the image has been drawn.
*/
public boolean drawImage(Image image, int x, int y,
ImageObserver observer) {
ImageData data = SWTUtils.convertAWTImageToSWT(image);
if (data == null) {
return false;
}
org.eclipse.swt.graphics.Image im = new org.eclipse.swt.graphics.Image(
this.gc.getDevice(), data);
this.gc.drawImage(im, x, y);
im.dispose();
return true;
}
/**
* Draws an image with the top left corner aligned to the point (x, y),
* and scaled to the specified width and height.
*
* @param image the image.
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param width the width for the rendered image.
* @param height the height for the rendered image.
* @param observer ignored here.
*
* @return <code>true</code> if the image has been drawn.
*/
public boolean drawImage(Image image, int x, int y, int width, int height,
ImageObserver observer) {
ImageData data = SWTUtils.convertAWTImageToSWT(image);
if (data == null) {
return false;
}
org.eclipse.swt.graphics.Image im = new org.eclipse.swt.graphics.Image(
this.gc.getDevice(), data);
org.eclipse.swt.graphics.Rectangle bounds = im.getBounds();
this.gc.drawImage(im, 0, 0, bounds.width, bounds.height, x, y, width,
height);
im.dispose();
return true;
}
/**
* Draws an image.
*
* @param image (<code>null</code> not permitted).
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param bgcolor the background color.
* @param observer an image observer.
*
* @return A boolean.
*/
public boolean drawImage(Image image, int x, int y, Color bgcolor,
ImageObserver observer) {
if (image == null) {
throw new IllegalArgumentException("Null "image" argument.");
}
int w = image.getWidth(null);
int h = image.getHeight(null);
if (w == -1 || h == -1) {
return false;
}
Paint savedPaint = getPaint();
fill(new Rectangle2D.Double(x, y, w, h));
setPaint(savedPaint);
return drawImage(image, x, y, observer);
}
/**
* Draws an image.
*
* @param image the image (<code>null</code> not permitted).
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param width the width.
* @param height the height.
* @param bgcolor the background colour.
* @param observer an image observer.
*
* @return A boolean.
*/
public boolean drawImage(Image image, int x, int y, int width, int height,
Color bgcolor, ImageObserver observer) {
if (image == null) {
throw new IllegalArgumentException("Null "image" argument.");
}
int w = image.getWidth(null);
int h = image.getHeight(null);
if (w == -1 || h == -1) {
return false;
}
Paint savedPaint = getPaint();
fill(new Rectangle2D.Double(x, y, w, h));
setPaint(savedPaint);
return drawImage(image, x, y, width, height, observer);
}
/**
* Not implemented - see {@link Graphics#drawImage(Image, int, int, int,
* int, int, int, int, int, ImageObserver)}.
*
* @param image the image.
* @param dx1
* @param dy1
* @param dx2
* @param dy2
* @param sx1
* @param sy1
* @param sx2
* @param sy2
* @param observer
*/
public boolean drawImage(Image image, int dx1, int dy1, int dx2, int dy2,
int sx1, int sy1, int sx2, int sy2, ImageObserver observer) {
// TODO Auto-generated method stub
return false;
}
/**
* Not implemented - see {@link Graphics#drawImage(Image, int, int, int,
* int, int, int, int, int, Color, ImageObserver)}.
*
* @param image the image.
* @param dx1
* @param dy1
* @param dx2
* @param dy2
* @param sx1
* @param sy1
* @param sx2
* @param sy2
* @param bgcolor
* @param observer
*/
public boolean drawImage(Image image, int dx1, int dy1, int dx2, int dy2,
int sx1, int sy1, int sx2, int sy2, Color bgcolor,
ImageObserver observer) {
// TODO Auto-generated method stub
return false;
}
/**
* Releases resources held by this instance (but note that the caller
* must dispose of the "GC" passed to the constructor).
*
* @see java.awt.Graphics#dispose()
*/
public void dispose() {
// we dispose resources we own but user must dispose gc
disposeResourcePool();
}
/**
* Add given swt resource to the resource pool. All resources added
* to the resource pool will be disposed when {@link #dispose()} is called.
*
* @param resource the resource to add to the pool.
* @return the swt <code>Resource</code> just added.
*/
private Resource addToResourcePool(Resource resource) {
this.resourcePool.add(resource);
return resource;
}
/**
* Dispose the resource pool.
*/
private void disposeResourcePool() {
for (Iterator it = this.resourcePool.iterator(); it.hasNext();) {
Resource resource = (Resource) it.next();
resource.dispose();
}
this.fontsPool.clear();
this.colorsPool.clear();
this.transformsPool.clear();
this.resourcePool.clear();
}
/**
* Internal method to convert a AWT font object into
* a SWT font resource. If a corresponding SWT font
* instance is already in the pool, it will be used
* instead of creating a new one. This is used in
* {@link #setFont()} for instance.
*
* @param font The AWT font to convert.
* @return The SWT font instance.
*/
private org.eclipse.swt.graphics.Font getSwtFontFromPool(Font font) {
org.eclipse.swt.graphics.Font swtFont = (org.eclipse.swt.graphics.Font)
this.fontsPool.get(font);
if (swtFont == null) {
swtFont = new org.eclipse.swt.graphics.Font(this.gc.getDevice(),
SWTUtils.toSwtFontData(this.gc.getDevice(), font, true));
addToResourcePool(swtFont);
this.fontsPool.put(font, swtFont);
}
return swtFont;
}
/**
* Internal method to convert a AWT color object into
* a SWT color resource. If a corresponding SWT color
* instance is already in the pool, it will be used
* instead of creating a new one. This is used in
* {@link #setColor()} for instance.
*
* @param awtColor The AWT color to convert.
* @return A SWT color instance.
*/
private org.eclipse.swt.graphics.Color getSwtColorFromPool(Color awtColor) {
org.eclipse.swt.graphics.Color swtColor =
(org.eclipse.swt.graphics.Color)
// we can"t use the following valueOf() method, because it
// won"t compile with JDK1.4
// this.colorsPool.get(Integer.valueOf(awtColor.getRGB()));
this.colorsPool.get(new Integer(awtColor.getRGB()));
if (swtColor == null) {
swtColor = SWTUtils.toSwtColor(this.gc.getDevice(), awtColor);
addToResourcePool(swtColor);
// see comment above
//this.colorsPool.put(Integer.valueOf(awtColor.getRGB()), swtColor);
this.colorsPool.put(new Integer(awtColor.getRGB()), swtColor);
}
return swtColor;
}
/**
* Internal method to convert a AWT transform object into
* a SWT transform resource. If a corresponding SWT transform
* instance is already in the pool, it will be used
* instead of creating a new one. This is used in
* {@link #setTransform()} for instance.
*
* @param awtTransform The AWT transform to convert.
* @return A SWT transform instance.
*/
private Transform getSwtTransformFromPool(AffineTransform awtTransform) {
Transform t = (Transform) this.transformsPool.get(awtTransform);
if (t == null) {
t = new Transform(this.gc.getDevice());
double[] matrix = new double[6];
awtTransform.getMatrix(matrix);
t.setElements((float) matrix[0], (float) matrix[1],
(float) matrix[2], (float) matrix[3],
(float) matrix[4], (float) matrix[5]);
addToResourcePool(t);
this.transformsPool.put(awtTransform, t);
}
return t;
}
/**
* Perform a switch between foreground and background
* color of gc. This is needed for consistency with
* the awt behaviour, and is required notably for the
* filling methods.
*/
private void switchColors() {
org.eclipse.swt.graphics.Color bg = this.gc.getBackground();
org.eclipse.swt.graphics.Color fg = this.gc.getForeground();
this.gc.setBackground(fg);
this.gc.setForeground(bg);
}
/**
* Converts an AWT <code>Shape</code> into a SWT <code>Path</code>.
*
* @param shape the shape (<code>null</code> not permitted).
*
* @return The path.
*/
private Path toSwtPath(Shape shape) {
int type;
float[] coords = new float[6];
Path path = new Path(this.gc.getDevice());
PathIterator pit = shape.getPathIterator(null);
while (!pit.isDone()) {
type = pit.currentSegment(coords);
switch (type) {
case (PathIterator.SEG_MOVETO):
path.moveTo(coords[0], coords[1]);
break;
case (PathIterator.SEG_LINETO):
path.lineTo(coords[0], coords[1]);
break;
case (PathIterator.SEG_QUADTO):
path.quadTo(coords[0], coords[1], coords[2], coords[3]);
break;
case (PathIterator.SEG_CUBICTO):
path.cubicTo(coords[0], coords[1], coords[2],
coords[3], coords[4], coords[5]);
break;
case (PathIterator.SEG_CLOSE):
path.close();
break;
default:
break;
}
pit.next();
}
return path;
}
/**
* Converts an SWT transform into the equivalent AWT transform.
*
* @param swtTransform the SWT transform.
*
* @return The AWT transform.
*/
private AffineTransform toAwtTransform(Transform swtTransform) {
float[] elements = new float[6];
swtTransform.getElements(elements);
AffineTransform awtTransform = new AffineTransform(elements);
return awtTransform;
}
}
17. Embed a JTable in SWT (no flicker)
/*******************************************************************************
* Copyright (c) 2000, 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.swt.snippets;
/*
* example snippet: embed a JTable in SWT (no flicker)
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* @since 3.0
*/
import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.Panel;
import java.util.Vector;
import javax.swing.JRootPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import org.eclipse.swt.SWT;
import org.eclipse.swt.awt.SWT_AWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.ruposite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class EmbedJTableSWTNoFlicker {
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
Composite composite = new Composite(shell, SWT.NO_BACKGROUND | SWT.EMBEDDED);
/*
* Set a Windows specific AWT property that prevents heavyweight components
* from erasing their background. Note that this is a global property and
* cannot be scoped. It might not be suitable for your application.
*/
try {
System.setProperty("sun.awt.noerasebackground", "true");
} catch (NoSuchMethodError error) {
}
/* Create and setting up frame */
Frame frame = SWT_AWT.new_Frame(composite);
Panel panel = new Panel(new BorderLayout()) {
public void update(java.awt.Graphics g) {
/* Do not erase the background */
paint(g);
}
};
frame.add(panel);
JRootPane root = new JRootPane();
panel.add(root);
java.awt.Container contentPane = root.getContentPane();
/* Creating components */
int nrows = 1000, ncolumns = 10;
Vector rows = new Vector();
for (int i = 0; i < nrows; i++) {
Vector row = new Vector();
for (int j = 0; j < ncolumns; j++) {
row.addElement("Item " + i + "-" + j);
}
rows.addElement(row);
}
Vector columns = new Vector();
for (int i = 0; i < ncolumns; i++) {
columns.addElement("Column " + i);
}
JTable table = new JTable(rows, columns);
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
table.createDefaultColumnsFromModel();
JScrollPane scrollPane = new JScrollPane(table);
contentPane.setLayout(new BorderLayout());
contentPane.add(scrollPane);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
17. Embeded Swing/AWT components to SWT
import javax.swing.JScrollPane;
import javax.swing.JTree;
import org.eclipse.swt.SWT;
import org.eclipse.swt.awt.SWT_AWT;
import org.eclipse.swt.widgets.ruposite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class EmbedSwingAWTSWT {
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setText("SWT and Swing/AWT Example");
Composite treeComp = new Composite(shell, SWT.EMBEDDED);
treeComp.setBounds(5,5,300,300);
java.awt.Frame fileTableFrame = SWT_AWT.new_Frame(treeComp);
java.awt.Panel panel = new java.awt.Panel(new java.awt.BorderLayout());
fileTableFrame.add(panel);
JTree fileTable = new JTree();
fileTable.setDoubleBuffered(true);
JScrollPane scrollPane = new JScrollPane(fileTable);
panel.add(scrollPane);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
17. Returns an AWT point with the same coordinates as the specified SWT point.
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------
* SWTUtils.java
* -------------
* (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Rainer Blessing;
* David Gilbert (david.gilbert@object-refinery.ru);
* Christoph Beck.
*
* Changes
* -------
* 01-Aug-2006 : New class (HP);
* 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
* 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
* added a new convert method for mouse events (HP);
* 12-Jul-2007 : Improved the mouse event conversion with buttons
* and modifiers handling, patch sent by Christoph Beck (HP);
* 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
* 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
* convertAWTImageToSWT() (DG);
* 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
*
*/
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import javax.swing.JPanel;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
/**
* Utility class gathering some useful and general method.
* Mainly convert forth and back graphical stuff between
* awt and swt.
*/
public class SWTUtils {
private final static String Az = "ABCpqr";
/** A dummy JPanel used to provide font metrics. */
protected static final JPanel DUMMY_PANEL = new JPanel();
/**
* Creates a swt color instance to match the rgb values
* of the specified awt color. alpha channel is not supported.
* Note that the dispose method will need to be called on the
* returned object.
*
* @param device The swt device to draw on (display or gc device).
* @param color The awt color to match.
* @return a swt color object.
*/
public static Color toSwtColor(Device device, java.awt.Color color) {
return new org.eclipse.swt.graphics.Color(device,
color.getRed(), color.getGreen(), color.getBlue());
}
/**
* Transform an awt Rectangle2d instance into a swt one.
* The coordinates are rounded to integer for the swt object.
* @param rect2d The awt rectangle to map.
* @return an swt <code>Rectangle</code> object.
*/
public static Rectangle toSwtRectangle(Rectangle2D rect2d) {
return new Rectangle(
(int) Math.round(rect2d.getMinX()),
(int) Math.round(rect2d.getMinY()),
(int) Math.round(rect2d.getWidth()),
(int) Math.round(rect2d.getHeight()));
}
/**
* Transform a swt Rectangle instance into an awt one.
* @param rect the swt <code>Rectangle</code>
* @return a Rectangle2D.Double instance with
* the eappropriate location and size.
*/
public static Rectangle2D toAwtRectangle(Rectangle rect) {
Rectangle2D rect2d = new Rectangle2D.Double();
rect2d.setRect(rect.x, rect.y, rect.width, rect.height);
return rect2d;
}
/**
* Returns an AWT point with the same coordinates as the specified
* SWT point.
*
* @param p the SWT point (<code>null</code> not permitted).
*
* @return An AWT point with the same coordinates as <code>p</code>.
*
* @see #toSwtPoint(java.awt.Point)
*/
public static Point2D toAwtPoint(Point p) {
return new java.awt.Point(p.x, p.y);
}
/**
* Returns an SWT point with the same coordinates as the specified
* AWT point.
*
* @param p the AWT point (<code>null</code> not permitted).
*
* @return An SWT point with the same coordinates as <code>p</code>.
*
* @see #toAwtPoint(Point)
*/
public static Point toSwtPoint(java.awt.Point p) {
return new Point(p.x, p.y);
}
/**
* Returns an SWT point with the same coordinates as the specified AWT
* point (rounded to integer values).
*
* @param p the AWT point (<code>null</code> not permitted).
*
* @return An SWT point with the same coordinates as <code>p</code>.
*
* @see #toAwtPoint(Point)
*/
public static Point toSwtPoint(java.awt.geom.Point2D p) {
return new Point((int) Math.round(p.getX()),
(int) Math.round(p.getY()));
}
}
17. Returns an SWT point with the same coordinates as the specified AWT point.
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------
* SWTUtils.java
* -------------
* (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Rainer Blessing;
* David Gilbert (david.gilbert@object-refinery.ru);
* Christoph Beck.
*
* Changes
* -------
* 01-Aug-2006 : New class (HP);
* 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
* 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
* added a new convert method for mouse events (HP);
* 12-Jul-2007 : Improved the mouse event conversion with buttons
* and modifiers handling, patch sent by Christoph Beck (HP);
* 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
* 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
* convertAWTImageToSWT() (DG);
* 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
*
*/
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import javax.swing.JPanel;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
/**
* Utility class gathering some useful and general method.
* Mainly convert forth and back graphical stuff between
* awt and swt.
*/
public class SWTUtils {
private final static String Az = "ABCpqr";
/** A dummy JPanel used to provide font metrics. */
protected static final JPanel DUMMY_PANEL = new JPanel();
/**
* Creates a swt color instance to match the rgb values
* of the specified awt color. alpha channel is not supported.
* Note that the dispose method will need to be called on the
* returned object.
*
* @param device The swt device to draw on (display or gc device).
* @param color The awt color to match.
* @return a swt color object.
*/
public static Color toSwtColor(Device device, java.awt.Color color) {
return new org.eclipse.swt.graphics.Color(device,
color.getRed(), color.getGreen(), color.getBlue());
}
/**
* Transform an awt Rectangle2d instance into a swt one.
* The coordinates are rounded to integer for the swt object.
* @param rect2d The awt rectangle to map.
* @return an swt <code>Rectangle</code> object.
*/
public static Rectangle toSwtRectangle(Rectangle2D rect2d) {
return new Rectangle(
(int) Math.round(rect2d.getMinX()),
(int) Math.round(rect2d.getMinY()),
(int) Math.round(rect2d.getWidth()),
(int) Math.round(rect2d.getHeight()));
}
/**
* Transform a swt Rectangle instance into an awt one.
* @param rect the swt <code>Rectangle</code>
* @return a Rectangle2D.Double instance with
* the eappropriate location and size.
*/
public static Rectangle2D toAwtRectangle(Rectangle rect) {
Rectangle2D rect2d = new Rectangle2D.Double();
rect2d.setRect(rect.x, rect.y, rect.width, rect.height);
return rect2d;
}
/**
* Returns an AWT point with the same coordinates as the specified
* SWT point.
*
* @param p the SWT point (<code>null</code> not permitted).
*
* @return An AWT point with the same coordinates as <code>p</code>.
*
* @see #toSwtPoint(java.awt.Point)
*/
public static Point2D toAwtPoint(Point p) {
return new java.awt.Point(p.x, p.y);
}
/**
* Returns an SWT point with the same coordinates as the specified
* AWT point.
*
* @param p the AWT point (<code>null</code> not permitted).
*
* @return An SWT point with the same coordinates as <code>p</code>.
*
* @see #toAwtPoint(Point)
*/
public static Point toSwtPoint(java.awt.Point p) {
return new Point(p.x, p.y);
}
/**
* Returns an SWT point with the same coordinates as the specified AWT
* point (rounded to integer values).
*
* @param p the AWT point (<code>null</code> not permitted).
*
* @return An SWT point with the same coordinates as <code>p</code>.
*
* @see #toAwtPoint(Point)
*/
public static Point toSwtPoint(java.awt.geom.Point2D p) {
return new Point((int) Math.round(p.getX()),
(int) Math.round(p.getY()));
}
}
17. Returns an SWT point with the same coordinates as the specified AWT point (rounded to integer values).
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------
* SWTUtils.java
* -------------
* (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Rainer Blessing;
* David Gilbert (david.gilbert@object-refinery.ru);
* Christoph Beck.
*
* Changes
* -------
* 01-Aug-2006 : New class (HP);
* 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
* 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
* added a new convert method for mouse events (HP);
* 12-Jul-2007 : Improved the mouse event conversion with buttons
* and modifiers handling, patch sent by Christoph Beck (HP);
* 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
* 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
* convertAWTImageToSWT() (DG);
* 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
*
*/
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import javax.swing.JPanel;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
/**
* Utility class gathering some useful and general method.
* Mainly convert forth and back graphical stuff between
* awt and swt.
*/
public class SWTUtils {
private final static String Az = "ABCpqr";
/** A dummy JPanel used to provide font metrics. */
protected static final JPanel DUMMY_PANEL = new JPanel();
/**
* Creates a swt color instance to match the rgb values
* of the specified awt color. alpha channel is not supported.
* Note that the dispose method will need to be called on the
* returned object.
*
* @param device The swt device to draw on (display or gc device).
* @param color The awt color to match.
* @return a swt color object.
*/
public static Color toSwtColor(Device device, java.awt.Color color) {
return new org.eclipse.swt.graphics.Color(device,
color.getRed(), color.getGreen(), color.getBlue());
}
/**
* Transform an awt Rectangle2d instance into a swt one.
* The coordinates are rounded to integer for the swt object.
* @param rect2d The awt rectangle to map.
* @return an swt <code>Rectangle</code> object.
*/
public static Rectangle toSwtRectangle(Rectangle2D rect2d) {
return new Rectangle(
(int) Math.round(rect2d.getMinX()),
(int) Math.round(rect2d.getMinY()),
(int) Math.round(rect2d.getWidth()),
(int) Math.round(rect2d.getHeight()));
}
/**
* Transform a swt Rectangle instance into an awt one.
* @param rect the swt <code>Rectangle</code>
* @return a Rectangle2D.Double instance with
* the eappropriate location and size.
*/
public static Rectangle2D toAwtRectangle(Rectangle rect) {
Rectangle2D rect2d = new Rectangle2D.Double();
rect2d.setRect(rect.x, rect.y, rect.width, rect.height);
return rect2d;
}
/**
* Returns an AWT point with the same coordinates as the specified
* SWT point.
*
* @param p the SWT point (<code>null</code> not permitted).
*
* @return An AWT point with the same coordinates as <code>p</code>.
*
* @see #toSwtPoint(java.awt.Point)
*/
public static Point2D toAwtPoint(Point p) {
return new java.awt.Point(p.x, p.y);
}
/**
* Returns an SWT point with the same coordinates as the specified
* AWT point.
*
* @param p the AWT point (<code>null</code> not permitted).
*
* @return An SWT point with the same coordinates as <code>p</code>.
*
* @see #toAwtPoint(Point)
*/
public static Point toSwtPoint(java.awt.Point p) {
return new Point(p.x, p.y);
}
/**
* Returns an SWT point with the same coordinates as the specified AWT
* point (rounded to integer values).
*
* @param p the AWT point (<code>null</code> not permitted).
*
* @return An SWT point with the same coordinates as <code>p</code>.
*
* @see #toAwtPoint(Point)
*/
public static Point toSwtPoint(java.awt.geom.Point2D p) {
return new Point((int) Math.round(p.getX()),
(int) Math.round(p.getY()));
}
}
17. Transform an awt Rectangle2d instance into a swt Rectangle2d.
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------
* SWTUtils.java
* -------------
* (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Rainer Blessing;
* David Gilbert (david.gilbert@object-refinery.ru);
* Christoph Beck.
*
* Changes
* -------
* 01-Aug-2006 : New class (HP);
* 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
* 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
* added a new convert method for mouse events (HP);
* 12-Jul-2007 : Improved the mouse event conversion with buttons
* and modifiers handling, patch sent by Christoph Beck (HP);
* 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
* 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
* convertAWTImageToSWT() (DG);
* 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
*
*/
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import javax.swing.JPanel;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
/**
* Utility class gathering some useful and general method.
* Mainly convert forth and back graphical stuff between
* awt and swt.
*/
public class SWTUtils {
private final static String Az = "ABCpqr";
/** A dummy JPanel used to provide font metrics. */
protected static final JPanel DUMMY_PANEL = new JPanel();
/**
* Creates a swt color instance to match the rgb values
* of the specified awt color. alpha channel is not supported.
* Note that the dispose method will need to be called on the
* returned object.
*
* @param device The swt device to draw on (display or gc device).
* @param color The awt color to match.
* @return a swt color object.
*/
public static Color toSwtColor(Device device, java.awt.Color color) {
return new org.eclipse.swt.graphics.Color(device,
color.getRed(), color.getGreen(), color.getBlue());
}
/**
* Transform an awt Rectangle2d instance into a swt one.
* The coordinates are rounded to integer for the swt object.
* @param rect2d The awt rectangle to map.
* @return an swt <code>Rectangle</code> object.
*/
public static Rectangle toSwtRectangle(Rectangle2D rect2d) {
return new Rectangle(
(int) Math.round(rect2d.getMinX()),
(int) Math.round(rect2d.getMinY()),
(int) Math.round(rect2d.getWidth()),
(int) Math.round(rect2d.getHeight()));
}
/**
* Transform a swt Rectangle instance into an awt one.
* @param rect the swt <code>Rectangle</code>
* @return a Rectangle2D.Double instance with
* the eappropriate location and size.
*/
public static Rectangle2D toAwtRectangle(Rectangle rect) {
Rectangle2D rect2d = new Rectangle2D.Double();
rect2d.setRect(rect.x, rect.y, rect.width, rect.height);
return rect2d;
}
/**
* Returns an AWT point with the same coordinates as the specified
* SWT point.
*
* @param p the SWT point (<code>null</code> not permitted).
*
* @return An AWT point with the same coordinates as <code>p</code>.
*
* @see #toSwtPoint(java.awt.Point)
*/
public static Point2D toAwtPoint(Point p) {
return new java.awt.Point(p.x, p.y);
}
/**
* Returns an SWT point with the same coordinates as the specified
* AWT point.
*
* @param p the AWT point (<code>null</code> not permitted).
*
* @return An SWT point with the same coordinates as <code>p</code>.
*
* @see #toAwtPoint(Point)
*/
public static Point toSwtPoint(java.awt.Point p) {
return new Point(p.x, p.y);
}
/**
* Returns an SWT point with the same coordinates as the specified AWT
* point (rounded to integer values).
*
* @param p the AWT point (<code>null</code> not permitted).
*
* @return An SWT point with the same coordinates as <code>p</code>.
*
* @see #toAwtPoint(Point)
*/
public static Point toSwtPoint(java.awt.geom.Point2D p) {
return new Point((int) Math.round(p.getX()),
(int) Math.round(p.getY()));
}
}
17. Transform a swt Rectangle instance into an AWT Rectangle.
/*
* JFreeChart : a free chart library for the Java(tm) platform
*
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------
* SWTUtils.java
* -------------
* (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
*
* Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr);
* Contributor(s): Rainer Blessing;
* David Gilbert (david.gilbert@object-refinery.ru);
* Christoph Beck.
*
* Changes
* -------
* 01-Aug-2006 : New class (HP);
* 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
* 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
* added a new convert method for mouse events (HP);
* 12-Jul-2007 : Improved the mouse event conversion with buttons
* and modifiers handling, patch sent by Christoph Beck (HP);
* 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
* 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
* convertAWTImageToSWT() (DG);
* 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
*
*/
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import javax.swing.JPanel;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
/**
* Utility class gathering some useful and general method.
* Mainly convert forth and back graphical stuff between
* awt and swt.
*/
public class SWTUtils {
private final static String Az = "ABCpqr";
/** A dummy JPanel used to provide font metrics. */
protected static final JPanel DUMMY_PANEL = new JPanel();
/**
* Creates a swt color instance to match the rgb values
* of the specified awt color. alpha channel is not supported.
* Note that the dispose method will need to be called on the
* returned object.
*
* @param device The swt device to draw on (display or gc device).
* @param color The awt color to match.
* @return a swt color object.
*/
public static Color toSwtColor(Device device, java.awt.Color color) {
return new org.eclipse.swt.graphics.Color(device,
color.getRed(), color.getGreen(), color.getBlue());
}
/**
* Transform an awt Rectangle2d instance into a swt one.
* The coordinates are rounded to integer for the swt object.
* @param rect2d The awt rectangle to map.
* @return an swt <code>Rectangle</code> object.
*/
public static Rectangle toSwtRectangle(Rectangle2D rect2d) {
return new Rectangle(
(int) Math.round(rect2d.getMinX()),
(int) Math.round(rect2d.getMinY()),
(int) Math.round(rect2d.getWidth()),
(int) Math.round(rect2d.getHeight()));
}
/**
* Transform a swt Rectangle instance into an awt one.
* @param rect the swt <code>Rectangle</code>
* @return a Rectangle2D.Double instance with
* the eappropriate location and size.
*/
public static Rectangle2D toAwtRectangle(Rectangle rect) {
Rectangle2D rect2d = new Rectangle2D.Double();
rect2d.setRect(rect.x, rect.y, rect.width, rect.height);
return rect2d;
}
/**
* Returns an AWT point with the same coordinates as the specified
* SWT point.
*
* @param p the SWT point (<code>null</code> not permitted).
*
* @return An AWT point with the same coordinates as <code>p</code>.
*
* @see #toSwtPoint(java.awt.Point)
*/
public static Point2D toAwtPoint(Point p) {
return new java.awt.Point(p.x, p.y);
}
/**
* Returns an SWT point with the same coordinates as the specified
* AWT point.
*
* @param p the AWT point (<code>null</code> not permitted).
*
* @return An SWT point with the same coordinates as <code>p</code>.
*
* @see #toAwtPoint(Point)
*/
public static Point toSwtPoint(java.awt.Point p) {
return new Point(p.x, p.y);
}
/**
* Returns an SWT point with the same coordinates as the specified AWT
* point (rounded to integer values).
*
* @param p the AWT point (<code>null</code> not permitted).
*
* @return An SWT point with the same coordinates as <code>p</code>.
*
* @see #toAwtPoint(Point)
*/
public static Point toSwtPoint(java.awt.geom.Point2D p) {
return new Point((int) Math.round(p.getX()),
(int) Math.round(p.getY()));
}
}
17. Using AWT to paint inside SWT
import java.awt.Canvas;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Graphics;
import org.eclipse.swt.SWT;
import org.eclipse.swt.awt.SWT_AWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.ruposite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class PaintAWTInsideSWT {
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
Composite composite = new Composite(shell, SWT.EMBEDDED);
Frame frame = SWT_AWT.new_Frame(composite);
Canvas canvas = new Canvas() {
public void paint(Graphics g) {
Dimension d = getSize();
g.drawLine(0, 0, d.width, d.height);
}
};
frame.add(canvas);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
