| Capturing drawing image WITHOUT showing it on screen [message #210947] |
Tue, 07 March 2006 11:33  |
Eclipse User |
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Originally posted by: vikram.sjn+eclipsezone.gmail.com
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Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
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Hi,
In a particular scenario, I have to grab image of draw2d drawing WITHOUT showing it on screen. So on the interface, I have a button which when pressed should internally draw the drawing and grab its image.
I wrote following code, but only the last shape is drawn on the image, that too to the top left corner. What should be done to resolve the problem (please ignore the background color in the image).
Please help. Thanks
//-------------------------
final LightweightSystem lws = new LightweightSystem(canvas);
final IFigure panel = new Figure();
panel.setLayoutManager(new FlowLayout());
lws.setContents(panel);
Shape rectangle = new RectangleFigure();
rectangle.setBackgroundColor(ColorConstants.lightBlue);
Shape ellipse = new Ellipse();
ellipse.setBackgroundColor(ColorConstants.yellow);
Clickable button = new Button("Click me");
panel.add(button);
panel.add(ellipse);
panel.add(rectangle);
Display display = Display.getDefault();
Image image = new Image(display, 1152, 864);
Rectangle bounds = image.getBounds();
GC gc = new GC(image);
SWTGraphics graphics = new SWTGraphics(gc);
panel.paint(graphics);
ImageUtils.saveImage(image, "widgetImage.jpg", SWT.IMAGE_JPEG);
//----------------------end
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| Re: Capturing drawing image WITHOUT showing it on screen [message #210956 is a reply to message #210947] |
Tue, 07 March 2006 11:48  |
| Eclipse User |
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Originally posted by: vikram.sjn+eclipsezone.gmail.com
oops ! Code in previous post is slightly incorrect.
Correct code follows...
//-------------------
final LightweightSystem lws = new LightweightSystem(canvas);
final IFigure panel = new Figure();
panel.setLayoutManager(new FlowLayout());
lws.setContents(panel);
Clickable button = new Button("Click me");
Clickable checkbox = new CheckBox("Check box");
Shape ellipse = new Ellipse();
ellipse.setBackgroundColor(ColorConstants.yellow);
panel.add(button);
panel.add(checkbox);
panel.add(ellipse);
Display display = Display.getDefault();
Image image = new Image(display, 1152, 864);
Rectangle bounds = image.getBounds();
GC gc = new GC(image);
SWTGraphics graphics = new SWTGraphics(gc);
panel.paint(graphics);
ImageUtils.saveImage(image, "widgetImage.jpg", SWT.IMAGE_JPEG);
//-------------------end
Thanks
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| Re: Capturing drawing image WITHOUT showing it on screen [message #211004 is a reply to message #210947] |
Tue, 07 March 2006 17:44 |
| Eclipse User |
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Originally posted by: none.us.ibm.com
The logic example contains a print diagram action which prints a .logic file
without opening or displaying an editor.
Perhaps you aren't setting a font?
"Vikram Sujanani" <vikram.sjn+eclipsezone@gmail.com> wrote in message
news:1567005.1141731370562.JavaMail.root@cp1.javalobby.org...
> Hi,
>
> In a particular scenario, I have to grab image of draw2d drawing WITHOUT
> showing it on screen. So on the interface, I have a button which when
> pressed should internally draw the drawing and grab its image.
>
> I wrote following code, but only the last shape is drawn on the image,
> that too to the top left corner. What should be done to resolve the
> problem (please ignore the background color in the image).
>
> Please help. Thanks
>
> //-------------------------
> final LightweightSystem lws = new LightweightSystem(canvas);
> final IFigure panel = new Figure();
> panel.setLayoutManager(new FlowLayout());
> lws.setContents(panel);
>
> Shape rectangle = new RectangleFigure();
> rectangle.setBackgroundColor(ColorConstants.lightBlue);
> Shape ellipse = new Ellipse();
> ellipse.setBackgroundColor(ColorConstants.yellow);
> Clickable button = new Button("Click me");
>
> panel.add(button);
> panel.add(ellipse);
> panel.add(rectangle);
>
> Display display = Display.getDefault();
>
> Image image = new Image(display, 1152, 864);
> Rectangle bounds = image.getBounds();
>
> GC gc = new GC(image);
> SWTGraphics graphics = new SWTGraphics(gc);
> panel.paint(graphics);
>
> ImageUtils.saveImage(image, "widgetImage.jpg", SWT.IMAGE_JPEG);
> //----------------------end
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| Re: Capturing drawing image WITHOUT showing it on screen [message #211147 is a reply to message #211131] |
Wed, 08 March 2006 13:24 |
| Eclipse User |
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Originally posted by: vikram.sjn+eclipsezone.gmail.com
Typically printing too has the same problem - only the last shape is drawn.
Here is the code...
//----------------------
final LightweightSystem lws = new LightweightSystem(shell);
final IFigure panel = new Figure();
panel.setLayoutManager(new FlowLayout());
lws.setContents(panel);
Clickable button = new Button("Click me");
Clickable checkbox = new CheckBox("Check box");
Shape ellipse = new Ellipse();
ellipse.setBackgroundColor(ColorConstants.yellow);
Shape rectangle = new RectangleFigure();
rectangle.setBackgroundColor(ColorConstants.lightBlue);
panel.add(button);
panel.add(checkbox);
panel.add(ellipse);
panel.add(rectangle);
final Display display = Display.getDefault();
Shell shell2 = new Shell();
PrintDialog dialog = new PrintDialog(shell2, SWT.NULL);
PrinterData data = dialog.open();
if (data != null) {
PrintFigureOperation op =
new PrintFigureOperation(new Printer(data), panel);
op.setPrintMode(PrintFigureOperation.TILE);
op.run("demo2");
}
//---------------------end
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| Re: Capturing drawing image WITHOUT showing it on screen [message #211155 is a reply to message #211131] |
Wed, 08 March 2006 13:34 |
| Eclipse User |
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Originally posted by: vikram.sjn+eclipsezone.gmail.com
Here is the complete code...
<pre>
public class Demo2 {
public static void main(String[] args) {
Shell shell = new Shell();
shell.setText("Draw2d");
final LightweightSystem lws = new LightweightSystem(shell);
final IFigure panel = new Figure();
panel.setLayoutManager(new FlowLayout());
lws.setContents(panel);
Clickable button = new Button("Click me");
Clickable checkbox = new CheckBox("Check box");
Shape ellipse = new Ellipse();
ellipse.setBackgroundColor(ColorConstants.yellow);
Shape rectangle = new RectangleFigure();
rectangle.setBackgroundColor(ColorConstants.lightBlue);
panel.add(button);
panel.add(checkbox);
panel.add(ellipse);
panel.add(rectangle);
final Display display = Display.getDefault();
// here printout prints only the last figure
Shell shell2 = new Shell();
PrintDialog dialog = new PrintDialog(shell2, SWT.NULL);
PrinterData data = dialog.open();
if (data != null) {
PrintFigureOperation op = new PrintFigureOperation(new Printer(data), panel);
op.setPrintMode(PrintFigureOperation.TILE);
op.run("demo2");
}
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// here printout is proper, and has all figures
Shell shell = new Shell();
PrintDialog dialog = new PrintDialog(shell, SWT.NULL);
PrinterData data = dialog.open();
if (data != null) {
PrintFigureOperation op = new PrintFigureOperation(new Printer(data), panel);
op.setPrintMode(PrintFigureOperation.FIT_PAGE);
op.run("demo2");
}
}
});
shell.open();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ())
display.sleep ();
}
}
}
</pre>
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| Re: Capturing drawing image WITHOUT showing it on screen [message #212250 is a reply to message #210947] |
Mon, 20 March 2006 13:12 |
| Eclipse User |
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Originally posted by: vikram.sjn+eclipsezone.gmail.com
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Content-Transfer-Encoding: 7bit
Content-Disposition: inline
I have finally resolved the problem. The problem was because I was printing/capturing image before the start of display's event/message loop.
Attached java file has the code which works.
Thanks to Randy Hudson, his post atleast indicated that my approach was not incorrect.
Vikram
------=_Part_1142_6047780.1142860381138
Content-Type: application/octet-stream; name=CaptureHiddenWidgetImage4.java
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment; filename=CaptureHiddenWidgetImage4.java
package com.vikramsjn.swtapp.componenttoimage;
import org.eclipse.draw2d.ActionEvent;
import org.eclipse.draw2d.ActionListener;
import org.eclipse.draw2d.CheckBox;
import org.eclipse.draw2d.Clickable;
import org.eclipse.draw2d.ColorConstants;
import org.eclipse.draw2d.Ellipse;
import org.eclipse.draw2d.Figure;
import org.eclipse.draw2d.FlowLayout;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.LightweightSystem;
import org.eclipse.draw2d.PrintFigureOperation;
import org.eclipse.draw2d.RectangleFigure;
import org.eclipse.draw2d.SWTGraphics;
import org.eclipse.draw2d.Shape;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.ImageLoader;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.printing.PrintDialog;
import org.eclipse.swt.printing.Printer;
import org.eclipse.swt.printing.PrinterData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;
import com.sun.imageio.plugins.common.ImageUtil;
/*
* Created on Feb 28, 2006
* @author vikram
*
* TODO Comment CaptureHiddenWidgetImage class description
*/
public class CaptureHiddenWidgetImage4 {
public static void main(String[] args) {
// create & preapre the shell
final Display display = new Display();
Shell shell = new Shell(display);
shell.setText("CaptureHiddenWidgetImage");
shell.setBounds(10, 10, 200, 200);
// create 'Play' button to allow capture
Button button = new Button(shell, SWT.PUSH);
button.setText("Play");
button.setBounds(10, 140, 50, 20);
final InternalDemo2 internalDemo2 = new InternalDemo2();
internalDemo2.initialize();
button.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
doPlay(display, internalDemo2);
}
});
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
private static void doPlay(final Display display,
final InternalDemo2 internalDemo2) {
//----------------------
Shell shell2 = new Shell();
PrintDialog dialog = new PrintDialog(shell2, SWT.NULL);
PrinterData data = dialog.open();
if (data != null) {
PrintFigureOperation op =
new PrintFigureOperation(new Printer(data),
internalDemo2.panel);
op.setPrintMode(PrintFigureOperation.TILE);
op.run("demo2");
}
//---------------------
//--------------------
Image image = new Image(display, 1152, 864);
Rectangle bounds = image.getBounds();
GC gc = new GC(image);
SWTGraphics graphics = new SWTGraphics(gc);
internalDemo2.panel.paint(graphics);
ImageUtils.saveImage(image, "fianlAttempt.jpg", SWT.IMAGE_JPEG);
image.dispose();
graphics.dispose();
gc.dispose();
//--------------------
}
}
class InternalDemo2 {
Shell shell;
public IFigure panel;
LightweightSystem lws;
// public static void main(String[] args) {
public void initialize() {
shell = new Shell();
//shell.setText("Draw2d");
lws = new LightweightSystem(shell);
panel = new Figure();
panel.setLayoutManager(new FlowLayout());
lws.setContents(panel);
Clickable button = new org.eclipse.draw2d.Button("Click me");
Clickable checkbox = new CheckBox("Check box");
Shape ellipse = new Ellipse();
ellipse.setBackgroundColor(ColorConstants.yellow);
Shape rectangle = new RectangleFigure();
rectangle.setBackgroundColor(ColorConstants.lightBlue);
panel.add(button);
panel.add(checkbox);
panel.add(ellipse);
panel.add(rectangle);
}
}
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