144 lines
6.1 KiB
Python
144 lines
6.1 KiB
Python
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# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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from Quartz import *
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import math
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_REMOVABLE_DISK_PATH = '/System/Library/Extensions/IOStorageFamily.kext/Contents/Resources/Removable.icns'
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def badge_disk_icon(badge_file, output_file):
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# Load the Removable disk icon
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url = CFURLCreateWithFileSystemPath(None, _REMOVABLE_DISK_PATH,
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kCFURLPOSIXPathStyle, False)
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backdrop = CGImageSourceCreateWithURL(url, None)
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backdropCount = CGImageSourceGetCount(backdrop)
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# Load the badge
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url = CFURLCreateWithFileSystemPath(None, badge_file,
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kCFURLPOSIXPathStyle, False)
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badge = CGImageSourceCreateWithURL(url, None)
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assert badge is not None, 'Unable to process image file: %s' % badge_file
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badgeCount = CGImageSourceGetCount(badge)
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# Set up a destination for our target
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url = CFURLCreateWithFileSystemPath(None, output_file,
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kCFURLPOSIXPathStyle, False)
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target = CGImageDestinationCreateWithURL(url, 'com.apple.icns',
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backdropCount, None)
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# Get the RGB colorspace
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rgbColorSpace = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB)
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# Scale
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scale = 1.0
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# Perspective transform
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corners = ((0.2, 0.95), (0.8, 0.95), (0.85, 0.35), (0.15, 0.35))
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# Translation
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position = (0.5, 0.5)
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for n in range(backdropCount):
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props = CGImageSourceCopyPropertiesAtIndex(backdrop, n, None)
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width = props['PixelWidth']
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height = props['PixelHeight']
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dpi = props['DPIWidth']
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depth = props['Depth']
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# Choose the best sized badge image
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bestWidth = None
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bestHeight = None
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bestBadge = None
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bestDepth = None
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bestDPI = None
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for m in range(badgeCount):
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badgeProps = CGImageSourceCopyPropertiesAtIndex(badge, m, None)
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badgeWidth = badgeProps['PixelWidth']
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badgeHeight = badgeProps['PixelHeight']
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badgeDPI = badgeProps['DPIWidth']
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badgeDepth = badgeProps['Depth']
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if bestBadge is None or (badgeWidth <= width
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and (bestWidth > width
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or badgeWidth > bestWidth
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or (badgeWidth == bestWidth
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and badgeDPI == dpi
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and badgeDepth <= depth
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and (bestDepth is None
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or badgeDepth > bestDepth)))):
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bestBadge = m
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bestWidth = badgeWidth
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bestHeight = badgeHeight
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bestDPI = badgeDPI
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bestDepth = badgeDepth
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badgeImage = CGImageSourceCreateImageAtIndex(badge, bestBadge, None)
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badgeCI = CIImage.imageWithCGImage_(badgeImage)
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backgroundImage = CGImageSourceCreateImageAtIndex(backdrop, n, None)
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backgroundCI = CIImage.imageWithCGImage_(backgroundImage)
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compositor = CIFilter.filterWithName_('CISourceOverCompositing')
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lanczos = CIFilter.filterWithName_('CILanczosScaleTransform')
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perspective = CIFilter.filterWithName_('CIPerspectiveTransform')
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transform = CIFilter.filterWithName_('CIAffineTransform')
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lanczos.setValue_forKey_(badgeCI, kCIInputImageKey)
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lanczos.setValue_forKey_(scale * float(width)/bestWidth, kCIInputScaleKey)
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lanczos.setValue_forKey_(1.0, kCIInputAspectRatioKey)
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topLeft = (width * scale * corners[0][0],
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width * scale * corners[0][1])
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topRight = (width * scale * corners[1][0],
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width * scale * corners[1][1])
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bottomRight = (width * scale * corners[2][0],
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width * scale * corners[2][1])
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bottomLeft = (width * scale * corners[3][0],
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width * scale * corners[3][1])
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out = lanczos.valueForKey_(kCIOutputImageKey)
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if width >= 16:
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perspective.setValue_forKey_(out, kCIInputImageKey)
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perspective.setValue_forKey_(CIVector.vectorWithX_Y_(*topLeft),
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'inputTopLeft')
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perspective.setValue_forKey_(CIVector.vectorWithX_Y_(*topRight),
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'inputTopRight')
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perspective.setValue_forKey_(CIVector.vectorWithX_Y_(*bottomRight),
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'inputBottomRight')
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perspective.setValue_forKey_(CIVector.vectorWithX_Y_(*bottomLeft),
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'inputBottomLeft')
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out = perspective.valueForKey_(kCIOutputImageKey)
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tfm = NSAffineTransform.transform()
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tfm.translateXBy_yBy_(math.floor((position[0] - 0.5 * scale) * width),
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math.floor((position[1] - 0.5 * scale) * height))
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transform.setValue_forKey_(out, kCIInputImageKey)
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transform.setValue_forKey_(tfm, 'inputTransform')
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out = transform.valueForKey_(kCIOutputImageKey)
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compositor.setValue_forKey_(out, kCIInputImageKey)
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compositor.setValue_forKey_(backgroundCI, kCIInputBackgroundImageKey)
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result = compositor.valueForKey_(kCIOutputImageKey)
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cgContext = CGBitmapContextCreate(None,
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width,
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height,
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8,
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0,
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rgbColorSpace,
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kCGImageAlphaPremultipliedLast)
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context = CIContext.contextWithCGContext_options_(cgContext, None)
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context.drawImage_inRect_fromRect_(result,
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((0, 0), (width, height)),
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((0, 0), (width, height)))
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image = CGBitmapContextCreateImage(cgContext)
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CGImageDestinationAddImage(target, image, props)
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CGImageDestinationFinalize(target)
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