At 11:35 AM -0700 7/25/2006, Rob Cozens wrote:
The text property is stored on disk? Isn't that only if the image
is referenced instead of imported?
Right. (But if it's referenced, the text property is always empty anyway.)
1. I create a string of characters, 4 bytes per pixel in imageData format .
2. I set the imageData of an image to my string
3. In what format is the image's text, if not rle? GIF, JPEG, PNG,
PICT, BMP, PBM/PGM/PPM, or XBM/XPM/XWD? Perhaps rle compresses the
data to 3 bytes per pixel by stripping the nulls?
It will be in RLE, unless you've set the format to something else -
but RLE format isn't the same as the imageData. (It looks like the
IDE sets the default paintCompression to PNG instead of RLE, so I
suspect it will actually be PNG unless you're using a standalone.)
4. What happens if I "put" my imageData-formatted string into an
image? Will the image not display correctly? Does it throw an
error? Is the string reformatted before being placed in the text
property?
You might get a crash, and you definitely won't get anything
resembling the original image. Only by the rarest random chance would
the imageData also be equivalent to valid RLE data - it's a
structured format, and its structure isn't anything like the
imageData pixmap structure.
Perhaps we are approaching "use" from different viewpoints; but then
again it may all boil down to my misconception of what happens if I
set the text of an image to an imageData-formatted string. If you
use "use" in the sense of "take the imageData as a starting point
for your modifications", you'll get no argument from me. And if
setting the text of an image to an imageData-formatted string throws
an error, I'm flat out wrong. But if it doesn't throw an error,
what does happen?
Well, as I say they're completely different formats. So setting the
text of an image to an imageData-format set of data doesn't do
anything sensible. It's just like setting the text of an image to the
text of a field, or the contents of a random variable - it probably
won't give a sensible result.
--
jeanne a. e. devoto ~ [EMAIL PROTECTED]
http://www.jaedworks.com
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