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Alexandru Ardelean
8d4f64dc9f
Exercise more gm subcommands and codecs on top of the existing PNG/JPEG, resize, pixel, draw and composite checks: TIFF round-trip, PPM and GIF encoders, crop, 90-degree rotate, horizontal append and in-place mogrify. Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>
74 lines
2.7 KiB
Bash
74 lines
2.7 KiB
Bash
#!/bin/sh
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case "$1" in
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graphicsmagick)
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# Version check
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gm version | grep -F "$2"
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# Create a small test image
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gm convert -size 32x32 xc:white /tmp/gm-white.png
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[ -f /tmp/gm-white.png ] || { echo "FAIL: PNG creation"; exit 1; }
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# Identify the created image; verify format and dimensions
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gm identify /tmp/gm-white.png | grep -E "PNG.*32x32"
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# Convert to JPEG
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gm convert /tmp/gm-white.png /tmp/gm-white.jpg
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gm identify /tmp/gm-white.jpg | grep "JPEG"
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# Resize: create a 64x64 image, resize to 16x16, confirm dimensions
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gm convert -size 64x64 xc:blue -resize 16x16! /tmp/gm-small.png
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gm identify /tmp/gm-small.png | grep -E "PNG.*16x16"
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# Color: create a 1x1 red pixel, sample it back
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gm convert -size 1x1 xc:red /tmp/gm-red.png
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gm convert /tmp/gm-red.png -format '%[pixel:p{0,0}]' info: | grep -iE "red|ff0000"
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# Draw: add text/annotate (exercises the font/draw engine)
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gm convert -size 64x16 xc:white -font Helvetica -pointsize 10 \
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-draw "text 2,12 'gm'" /tmp/gm-text.png 2>/dev/null || \
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gm convert -size 64x16 xc:white \
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-draw "text 2,12 'gm'" /tmp/gm-text.png
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gm identify /tmp/gm-text.png | grep "PNG"
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# Composite: overlay one image on another
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gm composite -compose Over /tmp/gm-red.png /tmp/gm-white.png /tmp/gm-composite.png
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gm identify /tmp/gm-composite.png | grep "PNG"
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# TIFF round-trip: encode, then decode back to PNG at the same geometry
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gm convert /tmp/gm-white.png /tmp/gm-white.tiff
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gm identify /tmp/gm-white.tiff | grep "TIFF"
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gm convert /tmp/gm-white.tiff /tmp/gm-back.png
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gm identify /tmp/gm-back.png | grep -E "PNG.*32x32"
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# PPM and GIF encoders (built-in codecs)
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gm convert /tmp/gm-white.png /tmp/gm-white.ppm
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gm identify /tmp/gm-white.ppm | grep -E "PNM|PPM"
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gm convert /tmp/gm-white.png /tmp/gm-white.gif
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gm identify /tmp/gm-white.gif | grep "GIF"
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# Crop a sub-region and confirm the new geometry
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gm convert /tmp/gm-white.png -crop 10x10+0+0 /tmp/gm-crop.png
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gm identify /tmp/gm-crop.png | grep -E "PNG.*10x10"
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# Rotate 90 degrees swaps width and height
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gm convert -size 40x20 xc:white -rotate 90 /tmp/gm-rot.png
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gm identify /tmp/gm-rot.png | grep -E "PNG.*20x40"
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# Horizontal append of two images
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gm convert /tmp/gm-white.png /tmp/gm-small.png +append /tmp/gm-app.png
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gm identify /tmp/gm-app.png | grep "PNG"
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# mogrify rewrites the file in place
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cp /tmp/gm-white.png /tmp/gm-mog.png
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gm mogrify -resize 20x20! /tmp/gm-mog.png
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gm identify /tmp/gm-mog.png | grep -E "PNG.*20x20"
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rm -f /tmp/gm-white.png /tmp/gm-white.jpg /tmp/gm-small.png \
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/tmp/gm-red.png /tmp/gm-text.png /tmp/gm-composite.png \
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/tmp/gm-white.tiff /tmp/gm-back.png /tmp/gm-white.ppm \
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/tmp/gm-white.gif /tmp/gm-crop.png /tmp/gm-rot.png /tmp/gm-app.png \
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/tmp/gm-mog.png
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;;
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esac
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