Re: Disabling Display of JPG and PDF Files in NSTextView
Re: Disabling Display of JPG and PDF Files in NSTextView
- Subject: Re: Disabling Display of JPG and PDF Files in NSTextView
- From: Heinrich Giesen <email@hidden>
- Date: Thu, 15 Sep 2005 10:45:21 +0200
NSTextView automatically displays JPG and PDF as images, instead of
icons,
and while many people would be thrilled with this feature, I don't
want it.
Once you know what textAttachment contains jpg or pdf data you could
do this in the textView with the attachment
[(NSCell *)[attachment attachmentCell]
setImage:[NSImage imageNamed:@"theIcon.icns"]];
// update the textView:
[[self layoutManager] textContainerChangedGeometry:[self
textContainer]];
The textView now shows the icon instead of the jpg pdf image.
.... until I reopened one of my saved files, clicked on
one of those
icons to see that after I closed the document and re-opened it, there
seemed to
be no data stored in the attachment.
If you save your textView with:
[textView writeRTFDToFile:filename atomically:YES];
the imageData (jpg, pdf ... ) are correctly saved in the
RTFD directory. The icon itself is not saved.
BTW: asking the filePath for the suffix @"jpg" or ... is not save.
I always find images that have the suffix @"jpg" but are bmp-images
or gif or tiff or ...
I think it is better to test the "magic number" of an image. For
jpg-Images the first 3 byte (regularFileContents of the wrapper)
must be 0xFF, 0xD8, 0xFF.
--
Heinrich Giesen
email@hidden
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