Home » Eclipse Projects » Standard Widget Toolkit (SWT) » Create Image from Composite for printing
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| Re: Create Image from Composite for printing [message #466861 is a reply to message #466860] |
Wed, 18 January 2006 16:22   |
Eclipse User |
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Originally posted by: sunil_kamath.nohotspammail.com
Steve <spbgamer@yahoo.com> wrote:
> I would like to print the contents of my Composite. To do this, I
> was going to convert the Composite to an Image and then print the
> image. I used this snippet from
> http://www.eclipse.org/swt/faq.php#noprintimage as a guide:
>
> // Take the snapshot into a display Image
> Point size = myWidget.getSize();
> Image image = new Image(display, size.x, size.y);
> GC gc = new GC(myWidget);
> gc.copyArea(image, 0, 0);
> gc.dispose();
>
> // Get the ImageData and create a new printer Image from it
> ImageData imageData = image.getImageData();
> Image printImage = new Image(printer, imageData);
>
> This work well if the entire Composite is visible. If the Composite
> has scroll bars, only the portion of the Composite that is showing is
> included in the Image. Is there a way to create an Image from a
> Composite such that the Image contains the entire contents of the
> composite and not just the part that is visible?
>
Not without resorting to native calls.
SWT does not support offscreen or hidden widget painting.
--
Sunil
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| Re: Create Image from Composite for printing [message #467076 is a reply to message #466861] |
Tue, 24 January 2006 15:03 |
 Steve
Messages: 29
Registered: July 2009 |
Junior Member |
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Sunil,
Thanks for the quick response. I have been playing with this a lot over the
past few days hoping that someting might work. Is it possible to do this
with a new Display or a hidden Shell or some kind of Canvas..., something?
I've heard that the Visual Editor does something like this, putting the SWT
widgets on a hidden Shell(?). Any ideas.
Thanks,
Steve
"Sunil Kamath" <sunil_kamath@nohotspammail.com> wrote in message
news:dqlpvn$v47$1@utils.eclipse.org...
> Steve <spbgamer@yahoo.com> wrote:
> > I would like to print the contents of my Composite. To do this, I
> > was going to convert the Composite to an Image and then print the
> > image. I used this snippet from
> > http://www.eclipse.org/swt/faq.php#noprintimage as a guide:
> >
> > // Take the snapshot into a display Image
> > Point size = myWidget.getSize();
> > Image image = new Image(display, size.x, size.y);
> > GC gc = new GC(myWidget);
> > gc.copyArea(image, 0, 0);
> > gc.dispose();
> >
> > // Get the ImageData and create a new printer Image from it
> > ImageData imageData = image.getImageData();
> > Image printImage = new Image(printer, imageData);
> >
> > This work well if the entire Composite is visible. If the Composite
> > has scroll bars, only the portion of the Composite that is showing is
> > included in the Image. Is there a way to create an Image from a
> > Composite such that the Image contains the entire contents of the
> > composite and not just the part that is visible?
> >
> Not without resorting to native calls.
> SWT does not support offscreen or hidden widget painting.
>
> --
> Sunil
>
>
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| Re: Create Image from Composite for printing [message #467091 is a reply to message #467076] |
Tue, 24 January 2006 17:07 |
| Eclipse User |
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Originally posted by: sunil_kamath.nohotspammail.com
Steve <spbgamer@yahoo.com> wrote:
> Sunil,
> Thanks for the quick response. I have been playing with this a lot
> over the past few days hoping that someting might work. Is it
> possible to do this with a new Display or a hidden Shell or some kind
> of Canvas..., something? I've heard that the Visual Editor does
> something like this, putting the SWT widgets on a hidden Shell(?).
> Any ideas.
>
VE uses native code for screen capture of widgets.
e.g., for Windows, you would send the WM_PRINT message to the control with
the handle of the gc for an Image.
org.eclipse.swt.internal.win32.OS.SendMessage (control.handle, OS.WM_PRINT,
gc.handle, OS.PRF_NONCLIENT | OS.PRF_CLIENT | OS.PRF_ERASEBKGND |
OS.PRF_CHILDREN);
There are similar native calls for other operating and windowing systems.
--
Sunil
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| Re: Create Image from Composite for printing [message #467402 is a reply to message #467091] |
Mon, 30 January 2006 21:59 |
Steve
Messages: 29
Registered: July 2009 |
Junior Member |
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Sunil,
Thanks for all the help. I was able to get the SendMessage() to do what I
want. Your snippet gave me some good search criteria for Google. But, I
can't seem to find anything for the other OS's (Linux, Mac, ....). You made
mention of similar native calls for other operating systems. Can you give
me a little more information. This is all new to me and I appreciate the
help.
Thanks,
Steve
"Sunil Kamath" <sunil_kamath@nohotspammail.com> wrote in message
news:dr5mss$j8u$1@utils.eclipse.org...
> Steve <spbgamer@yahoo.com> wrote:
> > Sunil,
> > Thanks for the quick response. I have been playing with this a lot
> > over the past few days hoping that someting might work. Is it
> > possible to do this with a new Display or a hidden Shell or some kind
> > of Canvas..., something? I've heard that the Visual Editor does
> > something like this, putting the SWT widgets on a hidden Shell(?).
> > Any ideas.
> >
>
> VE uses native code for screen capture of widgets.
> e.g., for Windows, you would send the WM_PRINT message to the control with
> the handle of the gc for an Image.
> org.eclipse.swt.internal.win32.OS.SendMessage (control.handle,
OS.WM_PRINT,
> gc.handle, OS.PRF_NONCLIENT | OS.PRF_CLIENT | OS.PRF_ERASEBKGND |
> OS.PRF_CHILDREN);
>
> There are similar native calls for other operating and windowing systems.
>
> --
> Sunil
>
>
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| Re: Create Image from Composite for printing [message #467406 is a reply to message #467402] |
Mon, 30 January 2006 22:40 |
| Eclipse User |
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Originally posted by: sunil_kamath.nohotspammail.com
Steve <spbgamer@yahoo.com> wrote:
> Sunil,
> Thanks for all the help. I was able to get the SendMessage() to do
> what I want. Your snippet gave me some good search criteria for
> Google. But, I can't seem to find anything for the other OS's
> (Linux, Mac, ....). You made mention of similar native calls for
> other operating systems. Can you give me a little more information.
> This is all new to me and I appreciate the help.
> Thanks,
> Steve
>
For other OSes, check out the VE sources.
http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.ve.swt/ ?cvsroot=Tools_Project
---
Sunil
> "Sunil Kamath" <sunil_kamath@nohotspammail.com> wrote in message
> news:dr5mss$j8u$1@utils.eclipse.org...
>> Steve <spbgamer@yahoo.com> wrote:
>>> Sunil,
>>> Thanks for the quick response. I have been playing with this a lot
>>> over the past few days hoping that someting might work. Is it
>>> possible to do this with a new Display or a hidden Shell or some
>>> kind of Canvas..., something? I've heard that the Visual Editor does
>>> something like this, putting the SWT widgets on a hidden Shell(?).
>>> Any ideas.
>>>
>>
>> VE uses native code for screen capture of widgets.
>> e.g., for Windows, you would send the WM_PRINT message to the
>> control with the handle of the gc for an Image.
>> org.eclipse.swt.internal.win32.OS.SendMessage (control.handle,
>> OS.WM_PRINT, gc.handle, OS.PRF_NONCLIENT | OS.PRF_CLIENT |
>> OS.PRF_ERASEBKGND | OS.PRF_CHILDREN);
>>
>> There are similar native calls for other operating and windowing
>> systems.
>>
>> --
>> Sunil
--
Sunil
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