Re: [platform-swt-dev] XBM to GIF conversion

[Carolyn MacLeod <Carolyn_MacLeod@xxxxxxxxxx>]

There is a bug in GIFFileFormat for
writing depth 1 GIFs.
I have opened a bug report: https://bugs.eclipse.org/bugs/show_bug.cgi?id=115652
You can cc yourself to this bug to follow
status.

It sounds like your XBMFileFormat and
XPMFileFormat classes are working ok.
Yes, your snippet below should work
- it just happened that since XBM files are 1 bit per pixel, you stumbled
into a bug writing 1-bit GIFs.
Try it with an XPM with more colours,
and see what happens <grin>.
Are you planning to submit your 2 classes
to eclipse?

Carolyn

Simon Meaden <simonmeaden@xxxxxxxxxxxxxxxx>
Sent by: platform-swt-dev-bounces@xxxxxxxxxxx

11/09/2005 04:08 AM

Please respond to
"Eclipse Platform SWT component developers list."

To	platform-swt-dev@xxxxxxxxxxx
cc
Subject	[platform-swt-dev] XBM to GIF conversion

Hi,

I am writing (intermittantly when I have time) two addons to the 
FileFormat class XBMFileFormat and XPMFileFormat to read X-Windows XBM
& 
XPM files. They both read and display fine and I am now checking that 
they can save as well. Now they save fine in their own formats but I am
having trouble saving across formats. When I save an XBM as a GIF the 
image is unreadable, however when I save the GIF as a different GIF the
same thing happens. I am assuming that this is possible. Here is a 
snippet of my test code.

    protected ImageLoader loaderXBM = new ImageLoader();
    protected ImageLoader loaderGIF = new ImageLoader();

    ImageData[] imageDataGif = 
loaderGIF.load("/workspace/graphics/harp.gif");
    ImageData[] imageDataXBM = loaderXBM.load("/workspace/test/harp.xbm");

    loaderXBM.save("/workspace/test/harp_xbm.gif",
SWT.IMAGE_GIF);
    loaderGIF.save("/workspace/test/harp_gif.gif",
SWT.IMAGE_GIF);

The two images are both the same, the file harp.xbm and harp.gif (which
was converted from the xbm using gimp) and their ImageData objects are
identical except for their types.

Any suggestions would be appreciated.

Regards
Simon Meaden
_______________________________________________
platform-swt-dev mailing list
platform-swt-dev@xxxxxxxxxxx
https://dev.eclipse.org/mailman/listinfo/platform-swt-dev