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https://github.com/cookiengineer/audacity
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ca2dc254b1
- Added docimages_regression_tests.py -- It's a test for Bug1844, concerning envelope points. - Added decorate_images.py -- It's a script to crop and drop shadow.
84 lines
2.9 KiB
Python
84 lines
2.9 KiB
Python
# decorate_images.py
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# Crops and drop-shadows images for the manual
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from PIL import Image
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from PIL import ImageFilter
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import glob
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import os
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# Edit these to your image source and image destination paths.
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src = "C:/OpenSourceGit/AudacityTeamTools/wit-html/trim_me"
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dest = "C:/OpenSourceGit/AudacityTeamTools/wit-html/processed"
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# from https://en.wikibooks.org/wiki/Python_Imaging_Library/Drop_Shadows
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def makeShadow(image, iterations, border, offset, backgroundColour, shadowColour):
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# image: base image to give a drop shadow
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# iterations: number of times to apply the blur filter to the shadow
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# border: border to give the image to leave space for the shadow
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# offset: offset of the shadow as [x,y]
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# backgroundCOlour: colour of the background
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# shadowColour: colour of the drop shadow
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#Calculate the size of the shadow's image
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fullWidth = image.size[0] + abs(offset[0]) + 2*border
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fullHeight = image.size[1] + abs(offset[1]) + 2*border
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#Create the shadow's image. Match the parent image's mode.
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shadow = Image.new(image.mode, (fullWidth, fullHeight), backgroundColour)
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# Place the shadow, with the required offset
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shadowLeft = border + max(offset[0], 0) #if <0, push the rest of the image right
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shadowTop = border + max(offset[1], 0) #if <0, push the rest of the image down
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#Paste in the constant colour
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shadow.paste(shadowColour,
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[shadowLeft, shadowTop,
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shadowLeft + image.size[0],
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shadowTop + image.size[1] ])
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# Apply the BLUR filter repeatedly
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for i in range(iterations):
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shadow = shadow.filter(ImageFilter.BLUR)
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# Paste the original image on top of the shadow
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imgLeft = border - min(offset[0], 0) #if the shadow offset was <0, push right
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imgTop = border - min(offset[1], 0) #if the shadow offset was <0, push down
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shadow.paste(image, (imgLeft, imgTop))
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return shadow
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# crops on 3 sides.
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def crop3_one( image, d ) :
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w,h = image.size
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image = image.crop( (d, 0, w-d, h-d) )
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return image
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#crops on 4 sides
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def crop4_one( image, d ) :
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w,h = image.size
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image = image.crop( (d, d, w-d, h-d) )
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return image
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# Take this one full path name, process it, output to dest directory.
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def process_one( name ):
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global dest
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name = os.path.realpath( name )
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image = Image.open( name )
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#---- Start of image processing steps
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image = crop4_one( image, 4 )
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image = makeShadow( image, 3, 2, [2,2], (255,255,255), (80,80,80) )
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#---- End of image processing steps
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path, fname = os.path.split( name )
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print( "Name:", fname, " Size:", image.size )
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image.save( "/".join( (dest, fname )) )
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# Process all .png images in directory
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for filename in glob.iglob(src + '/*.png'):
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name = os.path.realpath( filename );
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process_one(name)
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#process_one( 'C:/OpenSourceGit/AudacityTeamTools/wit-html/trim_3/AfterChirp.png' )
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