Adobe Extending Flash Professional CS4 - Manual (Page 61)

39 EXTENDING FLASH CS4 PROFESSIONAL
BitmapItem object
Description
Read-only property; a string that specifies whether the specified item was imported as an jpeg file. Possible values for
this property are “photo” (for jpeg files) and “lossless” (for uncompressed file types such as GIF and PNG).
Example
Assuming that the first item in the Library is a bitmap item, the following code displays "photo" if the file was imported
into the Library as a jpeg file, or "lossless" if is was not:
var libItem = fl.getDocumentDOM().library.items[0];
fl.trace("Imported compression type = "+ libItem.originalCompressionType);
See also
bitmapItem.compressionType
bitmapItem.quality
Availability
Flash MX 2004.
Usage
bitmapItem.quality
Description
Property; an integer that specifies the quality of the bitmap. To use the default document quality, specify -1; otherwise,
specify an integer from 0 to 100. Available only for JPEG compression.
Example
The following code sets the
quality property of the first item in the library of the current document to 65:
fl.getDocumentDOM().library.items[0].quality = 65;
alert(fl.getDocumentDOM().library.items[0].quality);
bitmapItem.sourceFileExists
Availability
Flash CS4 Professional.
Usage
bitmapItem.sourceFileExists
Description
Read-only property; a Boolean value of
true if the file that was imported to the Library still exists in the location from
where it was imported; false otherwise.