55 lines
1.3 KiB
Scheme
55 lines
1.3 KiB
Scheme
; test Image of mode grayscale methods of PDB
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; !!! Note inconsistent use in PIKA of GRAY versus GRAYSCALE
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; Basic grayscale tests
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; setup
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(define testImage (car (pika-image-new 21 22 RGB)))
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; method pika-image-convert-grayscale does not error
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(assert `(pika-image-convert-grayscale ,testImage))
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; conversion was effective:
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; basetype of grayscale is GRAY
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(assert `(=
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(car (pika-image-get-base-type ,testImage))
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GRAY))
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; conversion was effective:
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; grayscale image has-a colormap
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; colormap is-a vector of length zero, when image has no drawable.
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; FIXME doc says num-bytes is returned, obsolete since GBytes
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(assert `(=
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(vector-length
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(car (pika-image-get-colormap ,testImage)))
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0))
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; grayscale images have precision PRECISION-U8-NON-LINEAR
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; FIXME annotation of PDB procedure says PIKA_PRECISION_U8
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(assert `(=
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(car (pika-image-get-precision ,testImage))
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PRECISION-U8-NON-LINEAR ))
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; TODO
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; drawable of grayscale image is also grayscale
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;(assert `(car (pika-drawable-is-grayscale
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; ()
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; ,testImage)
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; convert precision of grayscale image succeeds
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(assert `(pika-image-convert-precision
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,testImage
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PRECISION-DOUBLE-GAMMA))
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