1from Quartz import * 2 3import Images 4import DataProvidersAndConsumers 5import Utilities 6 7import sys 8 9def exportImageWithMaskFromURLWithDestination(context, imageURL, 10 imagewidth, imageheight, bitsPerComponent, 11 theMaskingImageURL, maskwidth, maskheight): 12 13 imageBitsPerPixel = bitsPerComponent * 3 14 bytesPerRow = ((imagewidth * imageBitsPerPixel) + 7)/8 15 shouldInterpolate = True 16 imageDataProvider = CGDataProviderCreateWithURL(imageURL) 17 if imageDataProvider is None: 18 print >>sys.stderr, "Couldn't create Image Data provider!" 19 return 20 21 colorspace = Utilities.getTheCalibratedRGBColorSpace() 22 image = CGImageCreate(imagewidth, imageheight, bitsPerComponent, 23 imageBitsPerPixel, bytesPerRow, colorspace, 24 kCGImageAlphaNone, imageDataProvider, 25 None, shouldInterpolate, 26 kCGRenderingIntentDefault) 27 del imageDataProvider 28 if image is None: 29 print >>sys.stderr, "Couldn't create CGImageRef for this data!" 30 return 31 32 imageRect = CGRectMake(0.0,imageheight, imagewidth, imageheight) 33 # Draw the image. 34 CGContextDrawImage(context, imageRect, image) 35 36 # Now the mask. 37 maskDataProvider = CGDataProviderCreateWithURL(theMaskingImageURL) 38 if maskDataProvider is None: 39 print >>sys.stderr, "Couldn't create Image Data provider!" 40 return 41 42 mask = CGImageMaskCreate(maskwidth, maskheight, bitsPerComponent, 43 bitsPerComponent, maskwidth, 44 maskDataProvider, None, shouldInterpolate) 45 del maskDataProvider 46 if mask is None: 47 print >>sys.stderr, "Couldn't create CGImageRef for mask data!" 48 return 49 50 # Draw the mask below the image. 51 maskRect = CGRectMake(0.0, 0.0, maskwidth, maskheight) 52 CGContextDrawImage(context, maskRect, mask) 53 54 # Create a new CGImage object, the image, masked with mask. 55 imageMaskedWithImage = CGImageCreateWithMask(image, mask) 56 # Once the new image is created, we can release the image 57 # and the mask which make it up. Quartz retains what it needs 58 # for the new masked image. 59 del image 60 del mask 61 62 if imageMaskedWithImage is None: 63 print >>sys.stderr, "Couldn't create image masked with mask!" 64 return 65 66 imageRect = CGRectMake(imagewidth, imageheight/2, imagewidth, imageheight) 67 # Draw the masked image to the right of the image and its mask. 68 CGContextDrawImage(context, imageRect, imageMaskedWithImage) 69 70 # Of course this is a total hack. 71 outPath = "/tmp/imageout.png" 72 exportURL = CFURLCreateFromFileSystemRepresentation(None, 73 outPath, len(outPath), False) 74 75 if exportURL is not None: 76 Images.exportCGImageToPNGFileWithDestination(imageMaskedWithImage, exportURL) 77 78_data = ''.join(map(chr, ( 79 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 80 0xFE, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x00, 0x03, 0xFF, 0xFF, 81 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0xF8, 0xE7, 0xFF, 0xFF, 0xFF, 0xFF, 82 0xFF, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x40, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 83 0x00, 0x00, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 84 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 85 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x00, 86 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 87 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 88 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 89 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 90 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xFF, 91 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 92 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 93 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xFF, 94 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 95 0x00, 0x00, 0x01, 0xC0, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xF8, 96 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF8, 0x00, 0x00, 0x7F, 0xFF, 97 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xFC, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 98 0x00, 0x7F, 0xFF, 0xFC, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFC, 99 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF, 100 0xFF, 0xF0, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 101 0x0F, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 102 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF, 103 0xFF, 0xE0, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0x80, 0x01, 0xFF, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 104 0x7F, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x1F, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 105 0x80, 0x00, 0x1F, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x1F, 0xFF, 106 0xFF, 0xF8, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xE0, 0x00, 0x1F, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 107 0x7F, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x1F, 0xFF, 0xFF, 0xFC, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFE, 108 0x40, 0x00, 0x0F, 0xFF, 0xFF, 0xFC, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x1F, 0xFF, 109 0xFF, 0xFC, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xFC, 0x00, 0x01, 110 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFC, 0x00, 0x05, 0xEF, 0xFF, 0xFE, 0x00, 111 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xF0, 0x00, 0x3F, 0x00, 0x03, 0xFC, 0x00, 0x00, 0x00, 0x3F, 0xFF, 112 0xFF, 0xE0, 0x00, 0x7C, 0x00, 0x00, 0x78, 0x1F, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xC0, 0x00, 0x38, 113 0x00, 0x00, 0x78, 0x3C, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x78, 0x00, 0x00, 0x70, 0x18, 114 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x78, 0x1F, 0x00, 0x30, 0x00, 0x00, 0x01, 0xFF, 0xFF, 115 0xFF, 0xFE, 0x00, 0x7C, 0x3F, 0x00, 0x18, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 116 0x00, 0x00, 0x38, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x80, 0x00, 0x3C, 0x00, 117 0x0C, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x20, 0x1C, 0x03, 0xFF, 0xFF, 118 0xFF, 0xFF, 0x00, 0x00, 0x04, 0x00, 0x3C, 0x00, 0x3C, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x70, 119 0xBF, 0x86, 0x3C, 0x1F, 0xFC, 0x0B, 0xFF, 0xFF, 0xFF, 0xFF, 0xA0, 0x11, 0xF0, 0x0E, 0x3C, 0x1F, 120 0xFE, 0x8B, 0xFF, 0xFF, 0xFF, 0xFF, 0xA0, 0x19, 0xF0, 0x0C, 0x3C, 0x0F, 0xFF, 0x0B, 0xFF, 0xFF, 121 0xFF, 0xFF, 0xB0, 0x1D, 0xFE, 0x1C, 0x7E, 0x0F, 0xFF, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xB8, 0x1C, 122 0xFF, 0x3C, 0xFE, 0x03, 0xFE, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x1E, 0x7F, 0xF8, 0xDE, 0x00, 123 0x7C, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x1E, 0x7F, 0xF1, 0xDF, 0x30, 0x03, 0x83, 0xFF, 0xFF, 124 0xFF, 0xFF, 0xFE, 0x1F, 0x3F, 0xE3, 0x9F, 0x10, 0x3F, 0x83, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x0F, 125 0xFF, 0x83, 0xDF, 0x80, 0x1F, 0x83, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x03, 0xFC, 0x03, 0xDF, 0x81, 126 0x8F, 0x83, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x07, 0xFE, 0x1F, 0x8F, 0x00, 0x07, 0x83, 0xFF, 0xFF, 127 0xFF, 0xFF, 0xFF, 0x07, 0xFE, 0x3C, 0x06, 0x00, 0x01, 0x83, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x03, 128 0xFC, 0x7C, 0x00, 0x00, 0x01, 0x83, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x01, 0xF8, 0x7F, 0x00, 0x00, 129 0x01, 0x83, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x01, 0xF8, 0xFF, 0xE0, 0x30, 0x01, 0x83, 0xFF, 0xFF, 130 0xFF, 0xFF, 0xFF, 0x00, 0xF1, 0xEF, 0xF9, 0xE0, 0x03, 0x83, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 131 0xF1, 0xFF, 0xFF, 0x80, 0x0F, 0x83, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x03, 0xE2, 0xFF, 0xFE, 0x00, 132 0x1F, 0x87, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x83, 0xF0, 0x00, 0x00, 0x1C, 0x3F, 0x87, 0xFF, 0xFF, 133 0xFF, 0xFF, 0xFF, 0xC3, 0xF0, 0x00, 0x01, 0xF8, 0x0F, 0x87, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC3, 134 0xF0, 0x03, 0xFF, 0xF0, 0x5F, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC1, 0xFF, 0xC7, 0xFF, 0xE0, 135 0x7F, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE1, 0xFF, 0xF1, 0xFF, 0x80, 0x2F, 0x0F, 0xFF, 0xFF, 136 0xFF, 0xFF, 0xFF, 0xE1, 0xFF, 0xF8, 0x0F, 0xC0, 0x06, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF4, 137 0xFF, 0xFE, 0x0F, 0xF8, 0x44, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF4, 0xFF, 0xFF, 0xFF, 0xF8, 138 0x64, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF9, 0xFF, 0xFF, 0xFF, 0x3C, 0xE4, 0x7F, 0xFF, 0xFF, 139 0xFF, 0xFF, 0xFF, 0xFD, 0x9F, 0xFF, 0xFC, 0x1F, 0xC0, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFD, 140 0x1F, 0xFF, 0xFC, 0x03, 0xC0, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x01, 0xFF, 0xFF, 0xFF, 141 0xC0, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0xFF, 0xFF, 0xFF, 0x00, 0x7F, 0xFF, 0xFF, 142 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0xFF, 0xFF, 0xFF, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 143 0x80, 0x7F, 0xFF, 0xFF, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x80, 0x1F, 0xFF, 0xFF, 144 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xC0, 0x0F, 0xFF, 0xFF, 0x00, 0x1F, 0xFF, 0xFF, 145 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x07, 0xFF, 0xFF, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 146 0xF0, 0x03, 0xFF, 0xFF, 0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x70, 0x01, 0xFF, 0xFC, 147 0x00, 0x17, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x78, 0x00, 0x7F, 0xF0, 0x00, 0x07, 0xFF, 0xFF, 148 0xFF, 0xFF, 0xFF, 0xF0, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x03, 149 0xFE, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x1F, 0xFF, 0x80, 0x00, 0x00, 150 0x00, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x7F, 0x7F, 0xC0, 0x00, 0x00, 0x00, 0x07, 0xFF, 0xFF 151 ))) 152 153def getMaskData1(): 154 return _data 155 156_data2 = ''.join(map(chr, ( 157 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 158 0xFF, 0xFF, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x00, 0x1F, 159 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 160 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 161 0xFF, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x00, 0x00, 0x00, 162 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 163 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 164 0xE0, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 165 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 166 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 167 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x00, 168 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 169 0xFF, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 170 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x01, 171 0x80, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x03, 0xC0, 0x07, 0xFF, 0xFF, 172 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x0B, 0xE0, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 173 0x00, 0x00, 0x00, 0x07, 0xF0, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x1F, 174 0xF4, 0x83, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x3F, 0xE4, 0x03, 0xFF, 0xFF, 175 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x3F, 0xE4, 0x43, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 176 0x00, 0x00, 0x00, 0x3F, 0xE4, 0x4B, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x00, 0x02, 0xFF, 177 0xE4, 0x5B, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x02, 0xFF, 0xE0, 0x5B, 0xFF, 0xFF, 178 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x07, 0xC1, 0xFF, 0xE0, 0x59, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x18, 179 0x00, 0x7F, 0xF0, 0xFE, 0x00, 0x79, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x18, 0x00, 0x78, 0x0F, 0xFE, 180 0x04, 0xE1, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x18, 0x00, 0xB0, 0x47, 0xFF, 0xFF, 0xE1, 0xFF, 0xFF, 181 0xFF, 0xFF, 0xFE, 0x10, 0x00, 0xC4, 0x69, 0xFF, 0xFF, 0xC3, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x10, 182 0x01, 0xFF, 0xE1, 0xFC, 0x07, 0xC1, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x00, 0x01, 0xFF, 0xF8, 0x78, 183 0x01, 0xC5, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x04, 0x01, 0xFF, 0xF0, 0x78, 0x01, 0xC5, 0xFF, 0xFF, 184 0xFF, 0xFF, 0xFC, 0x0C, 0x00, 0xFF, 0xF8, 0x7E, 0x3F, 0xC1, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x0C, 185 0x00, 0x7F, 0xF0, 0x18, 0xFF, 0xC3, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x07, 0x00, 0x7F, 0xF4, 0x1F, 186 0xFF, 0xE3, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x23, 0x00, 0x7F, 0xE0, 0x3E, 0xFF, 0xE3, 0xFF, 0xFF, 187 0xFF, 0xFF, 0xF8, 0x11, 0x00, 0x7F, 0xEC, 0x5F, 0xBF, 0xE3, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x01, 188 0x00, 0x3F, 0xCE, 0x7E, 0x3F, 0xE3, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x08, 0x00, 0x7F, 0x80, 0x2E, 189 0x3F, 0xE3, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x06, 0x00, 0x7F, 0x00, 0x6E, 0x3F, 0xEB, 0xFF, 0xFF, 190 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x7E, 0x0D, 0xFE, 0xFF, 0xEB, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 191 0x00, 0x3C, 0x00, 0xFE, 0x3F, 0xEB, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x50, 0x00, 0xFE, 192 0x3F, 0xCB, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x01, 0x98, 0xFF, 0x3F, 0xCB, 0xFF, 0xFF, 193 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0xC7, 0xE1, 0xFF, 0x3F, 0x8B, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 194 0x00, 0x40, 0xFF, 0xFF, 0xBF, 0x8B, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0xE0, 0x1F, 0xFF, 195 0xDF, 0x0B, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0xE8, 0x63, 0xFF, 0xDF, 0x0F, 0xFF, 0xFF, 196 0xFF, 0xFF, 0xF0, 0x00, 0x02, 0xFC, 0xF9, 0xFF, 0xEF, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 197 0x03, 0xFE, 0x7F, 0xF8, 0x1E, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x00, 0x03, 0x7E, 0x0F, 0xF9, 198 0xBE, 0x05, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x00, 0x01, 0x7F, 0xC1, 0xF3, 0xFC, 0x05, 0xFF, 0xFF, 199 0xFF, 0xFF, 0xE0, 0x00, 0x01, 0x3D, 0xF8, 0x0F, 0x7C, 0x05, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x00, 200 0x01, 0xBC, 0x7F, 0xFF, 0xF8, 0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0xBE, 0xFF, 0xFF, 201 0xF8, 0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x1D, 0xFF, 0xFF, 0xF0, 0x00, 0xFF, 0xFF, 202 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x0F, 0xF7, 0xFF, 0xE0, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 203 0x00, 0x0F, 0xF3, 0xFF, 0xE0, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x00, 0x03, 0xF3, 0xFF, 204 0xC0, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x00, 0x01, 0xF7, 0xFF, 0x80, 0x00, 0x3F, 0xFF, 205 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 206 0x00, 0x00, 0x1F, 0xFF, 0x00, 0x20, 0x3F, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 207 0x00, 0x10, 0x3F, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0x00, 0x10, 0x3F, 0xFF, 208 0xFF, 0xFC, 0x00, 0x00, 0x02, 0x00, 0x0F, 0xFF, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xFC, 0x00, 0x00, 209 0x04, 0x00, 0x1F, 0xFE, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x07, 0x81, 0x7F, 0xFE, 210 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x03, 0xDF, 0xFF, 0xFE, 0x00, 0x00, 0x1F, 0xFF, 211 0xFF, 0xF8, 0x00, 0x00, 0x07, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 212 0x07, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xF0, 0x00, 0x40, 0x07, 0xFF, 0xFF, 0xFE, 213 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xF0, 0x00, 0xC0, 0x03, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x0F, 0xFF, 214 0xFF, 0xE0, 0x00, 0xE0, 0x07, 0xFF, 0xFF, 0xFE, 0x81, 0x00, 0x07, 0xFF, 0xFF, 0xC0, 0x01, 0xE0, 215 0x07, 0xFF, 0xFF, 0xFE, 0x01, 0x00, 0x07, 0xFF, 0xFF, 0x80, 0x0F, 0xF0, 0x03, 0xFF, 0xFF, 0xFE, 216 0x83, 0x80, 0x03, 0xFF, 0xFF, 0x00, 0x1F, 0xF0, 0x13, 0xFF, 0xFF, 0xFE, 0x03, 0xE0, 0x01, 0xFF, 217 0xFC, 0x03, 0x3F, 0xF0, 0x21, 0xFF, 0xFF, 0xFE, 0x03, 0xFC, 0x00, 0x3F, 0xF0, 0x3F, 0x3F, 0xF8, 218 0x3B, 0xFF, 0xFF, 0xFE, 0x03, 0xFE, 0xC0, 0x0F, 0xE3, 0xFB, 0x7F, 0xF8, 0x3B, 0xFF, 0xFF, 0xFF, 219 0x07, 0xFF, 0xFF, 0x07, 0x9F, 0xFB, 0x7F, 0xFC, 0x79, 0xFF, 0xFF, 0xFF, 0x07, 0xFF, 0xFF, 0xFF, 220 0xFF, 0xFF, 0x7F, 0xFC, 0x39, 0xFF, 0xFF, 0xFF, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0xFE, 221 0x3F, 0xFF, 0xFF, 0xFE, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0xFE, 0x1F, 0xFF, 0xFF, 0xFE, 222 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0xFE, 0x1F, 0x7F, 0xFF, 0xFE, 0x0F, 0xFF, 0xFF, 0xFF, 223 0xFF, 0xFF, 0x7F, 0xFF, 0x1F, 0xFE, 0xFF, 0xFC, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 224 0x0F, 0xFF, 0xFF, 0xFF, 0x1F, 0xFF, 0xEF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x87, 0xFF, 0xFF, 0xFE, 225 0x1F, 0xFF, 0xEF, 0xFF, 0xFF, 0xFF, 0xBF, 0xFF, 0x82, 0xFF, 0xFF, 0xFC, 0x3F, 0xFF, 0xFF, 0xFF, 226 0xFF, 0xFF, 0xBF, 0xFF, 0x83, 0xFF, 0xFF, 0xFC, 0x3F, 0xFF, 0xBF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 227 0xC1, 0xFF, 0xFF, 0xF8, 0x7F, 0xFF, 0xBF, 0xFF, 0xFF, 0xFF, 0xBF, 0xFF, 0xE0, 0xFF, 0xFF, 0xF0, 228 0xFF, 0xFF, 0xBF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF 229 ))) 230def getMaskData2(): 231 return _data2 232 233 234def doOneBitMaskImages(context): 235 bitsPerComponent = 1 236 bitsPerPixel = 1 237 width = 96 238 height = 96 239 bytesPerRow = 12 240 241 imageDataSize = bytesPerRow*height 242 shouldInterpolate = True 243 lightBlue = [0.482, 0.62, 0.871, 1.0] 244 black = [0.0, 0.0, 0.0, 1.0] 245 darkRed = [0.663, 0., 0.031, 1.0] 246 darkGreen = [0.404, 0.808, 0.239, 1.0] 247 darkBlue = [0.11, 0.208, 0.451, 1.0] 248 purple = [0.69, 0.486, 0.722, 1.0] 249 darkOrange = [0.965, 0.584, 0.059, 1.0] 250 251 # A decode array contains two elements for each component. In this 252 # case, an image mask has one component so the array consists of 253 # two values. When using this decode array, a sample value of 0 254 # is mapped into the value 1, and the maximum sample value is 255 # mapped into the value 0. This inverts the sense of the mask data. 256 decode = (1 , 0) 257 258 # Create a Quartz data provider for the image data. Because this 259 # data is static data, we don't need to release it so the data 260 # release function is None. 261 data = getMaskData1() 262 dataProvider = CGDataProviderCreateWithData(None, data, imageDataSize, None) 263 if dataProvider is None: 264 print >>sys.stderr, "Couldn't create Mask1 Data provider!" 265 return 266 267 # Create a mask from the data. 268 mask1 = CGImageMaskCreate(width, height, bitsPerComponent, 269 bitsPerPixel, bytesPerRow, dataProvider, 270 None, shouldInterpolate) 271 # Create the same mask but with a decode array that 272 # inverts the sense of the mask. 273 invertedmask1 = CGImageMaskCreate(width, height, 274 bitsPerComponent, bitsPerPixel, bytesPerRow, 275 dataProvider, decode, shouldInterpolate) 276 # Release the data provider now that this code no longer needs it. 277 del dataProvider 278 279 if mask1 is None or invertedmask1 is None: 280 if mask1 is None: 281 print >>sys.stderr, "Couldn't create CGImageRef for the mask data 1!" 282 283 if invertedmask1 is None: 284 print >>sys.stderr, "Couldn't create CGImageRef for the inverted mask data 1!" 285 return 286 287 # Get the pointer to the data for the second mask. 288 data = getMaskData2() 289 dataProvider = CGDataProviderCreateWithData(None, data, imageDataSize, None) 290 if dataProvider is None: 291 print >>sys.stderr, "Couldn't create Mask2 Data provider!" 292 return 293 294 mask2 = CGImageMaskCreate(width, height, bitsPerComponent, 295 bitsPerPixel, bytesPerRow, dataProvider, 296 None, shouldInterpolate) 297 # Create the same mask but with a decode array that 298 # inverts the sense of the mask. 299 invertedmask2 = CGImageMaskCreate(width, height, 300 bitsPerComponent, bitsPerPixel, bytesPerRow, 301 dataProvider, decode, shouldInterpolate) 302 # Release the data provider now that this code no longer needs it. 303 del dataProvider 304 if mask2 is None or invertedmask2 is None: 305 if mask2 is None: 306 print >>sys.stderr, "Couldn't create CGImageRef for the mask data 2!" 307 308 if invertedmask2 is None: 309 print >>sys.stderr, "Couldn't create CGImageRef for the inverted mask data 2!" 310 311 return 312 313 CGContextScaleCTM(context, 1.5, 1.5) 314 colorSpace = Utilities.getTheCalibratedRGBColorSpace() 315 CGContextSetFillColorSpace(context, colorSpace); 316 317 # Set the fill color to a light blue. 318 CGContextSetFillColor(context, lightBlue) 319 # Paint part of the background. 320 backRect = CGRectMake(width/2, height/2, width*3, height) 321 CGContextFillRect(context, backRect) 322 323 imageRect = CGRectMake(0., height, width, height) 324 CGContextSaveGState(context) 325 # Set the fill color to opaque black. 326 CGContextSetFillColor(context, black) 327 # Mask 1. 328 CGContextDrawImage(context, imageRect, mask1) 329 330 CGContextTranslateCTM(context, width, 0) 331 # Set the fill color to opaque red. 332 CGContextSetFillColor(context, darkRed); 333 # Mask 2. 334 CGContextDrawImage(context, imageRect, mask2) 335 CGContextTranslateCTM(context, width, 0) 336 # Set the fill color to dark orange. 337 CGContextSetFillColor(context, darkOrange) 338 # Mask 3. 339 CGContextDrawImage(context, imageRect, mask1) 340 341 CGContextTranslateCTM(context, width, 0) 342 # Make the orange 50% transparent. 343 darkOrange[3] = 0.5 344 CGContextSetFillColor(context, darkOrange) 345 # Mask 4. 346 CGContextDrawImage(context, imageRect, mask2) 347 CGContextRestoreGState(context) 348 349 # Translate down the page. The cast is necessary 350 # since height is typed as size_t which is unsigned. 351 CGContextTranslateCTM(context, 0, -height) 352 353 # Set the fill color to an opaque green. 354 CGContextSetFillColor(context, darkGreen) 355 # Mask 5. 356 CGContextDrawImage(context, imageRect, invertedmask2) 357 358 CGContextTranslateCTM(context, width, 0) 359 # Set the fill color to a dark blue. 360 CGContextSetFillColor(context, darkBlue) 361 # Mask 6. 362 CGContextDrawImage(context, imageRect, invertedmask1) 363 CGContextTranslateCTM(context, width, 0) 364 # Set the fill color to purple. 365 CGContextSetFillColor(context, purple) 366 # Mask 7. 367 CGContextDrawImage(context, imageRect, invertedmask2) 368 CGContextTranslateCTM(context, width, 0) 369 370 # Make the purple 50% transparent. 371 purple[3] = 0.5 372 CGContextSetFillColor(context, purple) 373 # Mask 8. 374 CGContextDrawImage(context, imageRect, invertedmask1) 375 376def doMaskImageWithMaskFromURL(context, imageURL, 377 imagewidth, imageheight, bitsPerComponent, 378 theMaskingImageURL, maskwidth, maskheight): 379 380 imageBitsPerPixel = bitsPerComponent * 3 381 bytesPerRow = ((imagewidth * imageBitsPerPixel) + 7)/8 382 shouldInterpolate = True 383 imageDataProvider = CGDataProviderCreateWithURL(imageURL) 384 if imageDataProvider is None: 385 print >>sys.stderr, "Couldn't create Image Data provider!" 386 return 387 388 colorspace = Utilities.getTheCalibratedRGBColorSpace() 389 image = CGImageCreate(imagewidth, imageheight, bitsPerComponent, 390 imageBitsPerPixel, bytesPerRow, colorspace, 391 kCGImageAlphaNone, imageDataProvider, 392 None, shouldInterpolate, 393 kCGRenderingIntentDefault) 394 del imageDataProvider 395 if image is None: 396 print >>sys.stderr, "Couldn't create CGImageRef for this data!" 397 return 398 399 imageRect = CGRectMake(0.0,imageheight, imagewidth, imageheight) 400 # Draw the image. 401 CGContextDrawImage(context, imageRect, image) 402 403 # Now the mask. 404 maskDataProvider = CGDataProviderCreateWithURL(theMaskingImageURL) 405 if maskDataProvider is None: 406 print >>sys.stderr, "Couldn't create Image Data provider!" 407 return 408 409 mask = CGImageMaskCreate(maskwidth, maskheight, bitsPerComponent, 410 bitsPerComponent, maskwidth, 411 maskDataProvider, None, shouldInterpolate) 412 del maskDataProvider 413 if mask is None: 414 print >>sys.stderr, "Couldn't create CGImageRef for mask data!" 415 return 416 417 # Draw the mask below the image. The current fill color (black) 418 # is painted through the mask. 419 maskRect = CGRectMake(0.0, 0.0, maskwidth, maskheight) 420 CGContextDrawImage(context, maskRect, mask) 421 422 # Create a new CGImage object, the image, masked with mask. 423 imageMaskedWithImage = CGImageCreateWithMask(image, mask) 424 # Once the new image is created, the code can release the image 425 # and the mask which make it up. Quartz retains what it needs 426 # for the new masked image 'imageMaskedWithImage'. 427 del image 428 del mask 429 if imageMaskedWithImage is None: 430 print >>sys.stderr, "Couldn't create image masked with mask!" 431 return 432 433 imageRect = CGRectMake(imagewidth + 10, imageheight/2, imagewidth, imageheight) 434 # Draw the masked image to the right of the image and its mask. 435 CGContextDrawImage(context, imageRect, imageMaskedWithImage) 436 437def doMaskImageWithGrayImageFromURL(context, imageURL, imagewidth, imageheight, bitsPerComponent, 438 theMaskingImageURL, maskwidth, maskheight): 439 440 imageBitsPerPixel = bitsPerComponent * 3 441 bytesPerRow = ( (imagewidth * imageBitsPerPixel) + 7)/8 442 shouldInterpolate = True 443 444 imageDataProvider = CGDataProviderCreateWithURL(imageURL) 445 if imageDataProvider is None: 446 print >>sys.stderr, "Couldn't create Image Data provider!" 447 return 448 449 colorspace = Utilities.getTheCalibratedRGBColorSpace() 450 image = CGImageCreate(imagewidth, imageheight, bitsPerComponent, 451 imageBitsPerPixel, bytesPerRow, colorspace, 452 kCGImageAlphaNone, imageDataProvider, 453 None, shouldInterpolate, 454 kCGRenderingIntentDefault) 455 del imageDataProvider 456 if image is None: 457 print >>sys.stderr, "Couldn't create CGImageRef for this data!" 458 return 459 460 imageRect = CGRectMake(0.,imageheight, imagewidth, imageheight) 461 # Draw the image. 462 CGContextDrawImage(context, imageRect, image) 463 464 # Now the mask. 465 maskDataProvider = CGDataProviderCreateWithURL(theMaskingImageURL) 466 if maskDataProvider is None: 467 print >>sys.stderr, "Couldn't create Image Data provider!" 468 return 469 470 # The color space for the image MUST be DeviceGray for it to 471 # be used as a masking image with CGImageCreateWithMask. 472 deviceGraySpace = CGColorSpaceCreateDeviceGray(); 473 mask = CGImageCreate(maskwidth, maskheight, bitsPerComponent, 474 bitsPerComponent, maskwidth, 475 deviceGraySpace, 476 kCGImageAlphaNone, maskDataProvider, 477 None, shouldInterpolate, 478 kCGRenderingIntentDefault) 479 # Release the color space since it is no longer needed. 480 del deviceGraySpace 481 del maskDataProvider 482 483 if mask is None: 484 print >>sys.stderr, "Couldn't create CGImageRef for gray image data!" 485 return 486 487 # Draw the mask below the image. The current fill color (black) 488 # is painted through the mask. 489 maskRect = CGRectMake(0., 0., maskwidth, maskheight) 490 CGContextDrawImage(context, maskRect, mask) 491 492 # Create a new CGImage object, the image, masked with mask. 493 imageMaskedWithImage = CGImageCreateWithMask(image, mask) 494 495 # Once the new image is created, the code can release the image 496 # and the mask which make it up. Quartz retains what it needs 497 # for the new masked image 'imageMaskedWithImage'. 498 del image 499 del mask 500 501 if imageMaskedWithImage is None: 502 print >>sys.stderr, "Couldn't create image masked with mask!" 503 return 504 505 imageRect = CGRectMake(imagewidth + 10, imageheight/2, 506 imagewidth, imageheight) 507 # Draw the masked image to the right of the image and its mask. 508 CGContextDrawImage(context, imageRect, imageMaskedWithImage) 509 # Be sure and release the masked image. 510 del imageMaskedWithImage 511 512def doMaskImageWithColorFromURL(context, url, 513 width, height, isColor): 514 515 # This routine treats color images as RGB. 516 bitsPerComponent = 8 517 if isColor: 518 bitsPerPixel = bitsPerComponent * 3 519 else: 520 bitsPerPixel = bitsPerComponent 521 522 bytesPerRow = ( (width * bitsPerPixel) + 7)/8 523 shouldInterpolate = True 524 525 # This is a range of dark gray to black colors for an 8 bit per component 526 # image in a gray or RGB color space. The entries are image sample 527 # values of 0-0x1F for the first color component, 0-0x1F for the 528 # second color component, and so on. For image sample values where 529 # all components fall within the ranges in maskingColors, the sample 530 # value is masked and therefore unpainted. 531 maskingColors = (0x00, 0x1F, 0x00, 0x1F, 0x00, 0x1F) 532 backColor = (1., 0., 0., 1.) # Opaque red. 533 534 # Create a Quartz data provider from the supplied URL. 535 dataProvider = CGDataProviderCreateWithURL(url) 536 if dataProvider is None: 537 print >>sys.stderr, "Couldn't create Image data provider!" 538 return 539 540 # Create an image of the specified width, height and bits per pixel 541 # from the URL. 542 if isColor: 543 colorspace = Utilities.getTheCalibratedRGBColorSpace() 544 else: 545 colorspace = Utilities.getTheCalibratedGrayColorSpace() 546 547 image = CGImageCreate(width, height, bitsPerComponent, bitsPerPixel, 548 bytesPerRow, colorspace, kCGImageAlphaNone, 549 dataProvider, None, shouldInterpolate, 550 kCGRenderingIntentDefault) 551 del dataProvider 552 if image is None: 553 print >>sys.stderr, "Couldn't create CGImageRef for this data!" 554 return 555 556 imageRect = CGRectMake(10., 10., width, height) 557 #CGContextScaleCTM(context, 0.33, 0.33) 558 # Set the color space and the color, then 559 # paint a red rectangle behind the image. 560 CGContextSetFillColorSpace(context, colorspace) 561 CGContextSetFillColor(context, backColor) 562 CGContextFillRect(context, imageRect) 563 # Draw the image into the rectangle. 564 CGContextDrawImage(context, imageRect, image) 565 # Create a new image from the original one, masking out a range 566 # of the blackest sample values. 567 imageMaskedWithColor = CGImageCreateWithMaskingColors(image, maskingColors) 568 # Release the original image; it is no longer needed. 569 del image 570 if imageMaskedWithColor is None: 571 print >>sys.stderr, "Couldn't create CGImageRef for masking color!" 572 return 573 574 # Paint the rectangle behind the next image with red. 575 imageRect = CGRectMake(30. + width, 10., width, height) 576 CGContextFillRect(context, imageRect) 577 # Draw the image. Image sample values in the range of 578 # the masking color are unpainted, allowing the background 579 # to show through. 580 CGContextDrawImage(context, imageRect, imageMaskedWithColor) 581 582 583if 1: # Set to 1 for code in the book. 584 585 def drawWithClippingMask(context, theMaskingImageURL, imagewidth, imageheight): 586 # An array of CGColor objects. 587 colors = ( Utilities.getRGBOpaqueDarkGreenColor(), Utilities.getRGBOpaqueDarkBlueColor(), 588 Utilities.getRGBOpaqueBlueColor(), Utilities.getRGBOpaqueRedColor() ) 589 590 imageBitsPerComponent = 8 591 bytesPerRow = imagewidth 592 shouldInterpolate = True 593 decode = (1, 0) 594 595 # Create the data. 596 dataProvider = CGDataProviderCreateWithURL(theMaskingImageURL) 597 if dataProvider is None: 598 print >>sys.stderr, "Couldn't create Image data provider!" 599 return 600 601 cs = CGColorSpaceCreateDeviceGray() 602 image = CGImageCreate(imagewidth, imageheight, 603 imageBitsPerComponent, imageBitsPerComponent, 604 bytesPerRow, cs, kCGImageAlphaNone, dataProvider, decode, 605 shouldInterpolate, kCGRenderingIntentDefault) 606 del cs 607 del dataProvider 608 609 if image is None: 610 print >>sys.stderr, "Couldn't create Image!" 611 return 612 613 imageRect = CGRectMake(0, 0, imagewidth*2/3, imageheight*2/3) 614 615 # Position for drawing the image at the left side of the figure. 616 CGContextTranslateCTM(context, 50, 50 ) 617 618 # Draw the image. 619 CGContextDrawImage(context, imageRect, image) 620 621 # Position to the right of the image just painted. 622 CGContextTranslateCTM(context, CGRectGetWidth(imageRect) + 25, 0) 623 624 # Clip to the image. 625 CGContextClipToMask(context, imageRect, image) 626 # Release the image since this code no longer needs it. 627 del image 628 629 # Make a rect that has a width and height 1/3 that of the image. 630 rect = CGRectMake(0, 0, CGRectGetWidth(imageRect)/3, CGRectGetHeight(imageRect)/3) 631 632 CGContextTranslateCTM(context, 0, 2*CGRectGetHeight(rect)) 633 634 # Draw a 3 x 3 grid of rectangles, setting the color for each rectangle 635 # by cycling through the array of CGColor objects in the 'colors' array. 636 for j in range(3): 637 CGContextSaveGState(context) 638 for i in range(3): 639 # Draw a row of rectangles. 640 # Set the fill color using one of the CGColor objects in the 641 # colors array. 642 CGContextSetFillColorWithColor(context, colors[(i+j) % 4]) 643 CGContextFillRect(context, rect) 644 CGContextTranslateCTM(context, CGRectGetWidth(rect), 0) 645 646 CGContextRestoreGState(context) 647 # Position to draw the next row. 648 CGContextTranslateCTM(context, 0, -CGRectGetHeight(rect)) 649 650else: 651 # This code works just fine to screen but when drawing to a PDF 652 # or printing context the masked drawing is completely masked out 653 # due to a bug in Quartz prior to Tiger 10.4.3. 654 def drawWithClippingMask(context, theMaskingImageURL, maskwidth, maskheight): 655 # An array of CGColor objects. 656 colors = ( 657 Utilities.getRGBOpaqueDarkGreenColor(), 658 Utilities.getRGBOpaqueDarkBlueColor(), 659 Utilities.getRGBOpaqueBlueColor(), 660 Utilities.getRGBOpaqueRedColor()) 661 maskBitsPerComponent = 8 662 bytesPerRow = ( (maskwidth * maskBitsPerComponent) + 7)/8 663 shouldInterpolate = True 664 maskDataProvider = CGDataProviderCreateWithURL(theMaskingImageURL) 665 666 if maskDataProvider is None: 667 print >>sys.stderr, "Couldn't create Image Mask provider!" 668 return 669 mask = CGImageMaskCreate(maskwidth, maskheight, maskBitsPerComponent, 670 maskBitsPerComponent, maskwidth, 671 maskDataProvider, None, shouldInterpolate) 672 del maskDataProvider 673 674 if mask is None: 675 print >>sys.stderr, "Couldn't create Image Mask!" 676 return 677 678 maskRect = CGRectMake(0, 0, maskwidth/3, maskheight/3) 679 680 # Position for drawing the mask at the left side of the figure. 681 CGContextTranslateCTM(context, 50, 50 ) 682 # Set the context fill color to a CGColor object that is black. 683 CGContextSetFillColorWithColor(context, getRGBOpaqueBlackColor()) 684 # Draw the mask. It is painted with with the black fill color. 685 CGContextDrawImage(context, maskRect, mask) 686 687 # Position to the right of the mask just painted. 688 CGContextTranslateCTM(context, CGRectGetWidth(maskRect) + 25, 0) 689 690 # Clip to the mask. 691 CGContextClipToMask(context, maskRect, mask) 692 # Release the mask since this code no longer needs it. 693 del mask 694 695 # Make a rect that has a width and height 1/3 that of the image mask. 696 rect = CGRectMake(0, 0, CGRectGetWidth(maskRect)/3, CGRectGetHeight(maskRect)/3) 697 698 CGContextTranslateCTM(context, 0, 2*CGRectGetHeight(rect)) 699 700 # Draw a 3 x 3 grid of rectangles, setting the color for each rectangle 701 # by cycling through the array of CGColor objects in the 'colors' array. 702 for j in range(3): 703 CGContextSaveGState(context) 704 for i in range(3): 705 # Draw a row of rectangles. 706 # Set the fill color using one of the CGColor objects in the 707 # colors array. 708 CGContextSetFillColorWithColor(context, colors[(i+j) % 4]) 709 CGContextFillRect(context, rect) 710 CGContextTranslateCTM(context, CGRectGetWidth(rect), 0) 711 CGContextRestoreGState(context) 712 # Position to draw the next row. 713 CGContextTranslateCTM(context, 0, -CGRectGetHeight(rect)) 714
