def exportColorRampImageWithQT(context):
width = 256
height = 256
bitsPerComponent = 8
bitsPerPixel = 24
bytesPerRow = width * 3
shouldInterpolate = True
imageDataProvider = DataProvidersAndConsumers.createRGBRampDataProvider()
if imageDataProvider is None:
print >>sys.stderr, "Couldn't create Image Data provider!"
return
colorspace = Utilities.getTheCalibratedRGBColorSpace()
image = CGImageCreate(width, height, bitsPerComponent,
bitsPerPixel, bytesPerRow, colorspace,
kCGImageAlphaNone, imageDataProvider,
None, shouldInterpolate, kCGRenderingIntentDefault)
del imageDataProvider
if image is None:
print >>sys.stderr, "Couldn't create CGImageRef for this data!"
return
rect = CGRectMake(0.0, 0.0, width, height)
CGContextDrawImage(context, rect, image)
# Of course this is a total hack.
outPath = "/tmp/imageout.jpg"
exportURL = CFURLCreateFromFileSystemRepresentation(None,
outPath, len(outPath), False)
if exportURL:
exportCGImageToJPEGFile(image, exportURL)
def doGrayRamp(context):
width = 256
height = 1
bitsPerComponent = 8
bitsPerPixel = 8
bytesPerRow = width
shouldInterpolate = True
dataProvider = DataProvidersAndConsumers.createGrayRampDirectAccessDP()
if dataProvider is None:
print >>sys.stderr, "Couldn't create Gray Ramp provider!"
return
colorspace = Utilities.getTheCalibratedGrayColorSpace()
image = CGImageCreate(width, height, bitsPerComponent, bitsPerPixel,
bytesPerRow, colorspace, kCGImageAlphaNone, dataProvider,
None, shouldInterpolate, kCGRenderingIntentDefault)
del dataProvider
if image is None:
print >>sys.stderr, "Couldn't create CGImageRef for image data!"
return
imageRect = CGRectMake(0.0, 0.0, 256, 256)
# Drawing the image that is 256 samples wide and
# 1 scanline high into a rectangle that is 256 x 256 units
# on a side causes Quartz to stretch the image to fill
# the destination rectangle.
CGContextDrawImage(context, imageRect, image)
def doColorRampImage(context):
width = 256
height = 256
bitsPerComponent = 8
bitsPerPixel = 24
bytesPerRow = width * 3
shouldInterpolate = True
imageDataProvider = DataProvidersAndConsumers.createRGBRampDataProvider()
if imageDataProvider is None:
print >>sys.stderr, "Couldn't create Image Data provider!"
return
colorspace = Utilities.getTheCalibratedRGBColorSpace()
image = CGImageCreate(width, height, bitsPerComponent,
bitsPerPixel, bytesPerRow, colorspace, kCGImageAlphaNone,
imageDataProvider, None, shouldInterpolate,
kCGRenderingIntentDefault)
# No longer need the data provider.
del imageDataProvider
if image is None:
print >>sys.stderr, "Couldn't create CGImageRef for this data!"
return
imageRect = CGRectMake(0.0, 0.0, width, height)
# Draw the image.
CGContextDrawImage(context, imageRect, image)
def exportColorRampImageWithQT(context):
width = 256
height = 256
bitsPerComponent = 8
bitsPerPixel = 24
bytesPerRow = width * 3
shouldInterpolate = True
imageDataProvider = DataProvidersAndConsumers.createRGBRampDataProvider()
if imageDataProvider is None:
print >>sys.stderr, "Couldn't create Image Data provider!"
return
colorspace = Utilities.getTheCalibratedRGBColorSpace()
image = CGImageCreate(width, height, bitsPerComponent,
bitsPerPixel, bytesPerRow, colorspace,
kCGImageAlphaNone, imageDataProvider,
None, shouldInterpolate, kCGRenderingIntentDefault)
del imageDataProvider
if image is None:
print >>sys.stderr, "Couldn't create CGImageRef for this data!"
return
rect = CGRectMake(0.0, 0.0, width, height)
CGContextDrawImage(context, rect, image)
# Of course this is a total hack.
outPath = "/tmp/imageout.jpg"
exportURL = CFURLCreateFromFileSystemRepresentation(None,
outPath, len(outPath), False)
if exportURL:
exportCGImageToJPEGFile(image, exportURL)
def doGrayRamp(context):
width = 256
height = 1
bitsPerComponent = 8
bitsPerPixel = 8
bytesPerRow = width
shouldInterpolate = True
dataProvider = DataProvidersAndConsumers.createGrayRampDirectAccessDP()
if dataProvider is None:
print >>sys.stderr, "Couldn't create Gray Ramp provider!"
return
colorspace = Utilities.getTheCalibratedGrayColorSpace()
image = CGImageCreate(width, height, bitsPerComponent, bitsPerPixel,
bytesPerRow, colorspace, kCGImageAlphaNone, dataProvider,
None, shouldInterpolate, kCGRenderingIntentDefault)
del dataProvider
if image is None:
print >>sys.stderr, "Couldn't create CGImageRef for image data!"
return
imageRect = CGRectMake(0.0, 0.0, 256, 256)
# Drawing the image that is 256 samples wide and
# 1 scanline high into a rectangle that is 256 x 256 units
# on a side causes Quartz to stretch the image to fill
# the destination rectangle.
CGContextDrawImage(context, imageRect, image)
def doColorRampImage(context):
width = 256
height = 256
bitsPerComponent = 8
bitsPerPixel = 24
bytesPerRow = width * 3
shouldInterpolate = True
imageDataProvider = DataProvidersAndConsumers.createRGBRampDataProvider()
if imageDataProvider is None:
print >>sys.stderr, "Couldn't create Image Data provider!"
return
colorspace = Utilities.getTheCalibratedRGBColorSpace()
image = CGImageCreate(width, height, bitsPerComponent,
bitsPerPixel, bytesPerRow, colorspace, kCGImageAlphaNone,
imageDataProvider, None, shouldInterpolate,
kCGRenderingIntentDefault)
# No longer need the data provider.
del imageDataProvider
if image is None:
print >>sys.stderr, "Couldn't create CGImageRef for this data!"
return
imageRect = CGRectMake(0.0, 0.0, width, height)
# Draw the image.
CGContextDrawImage(context, imageRect, image)
def doImageWithCallbacksCreatedFromURL(context, url, width, height,
bitsPerComponent, isRGB):
if isRGB:
bitsPerPixel = bitsPerComponent * 3
else:
bitsPerPixel = bitsPerComponent
bytesPerRow = ((width * bitsPerPixel) + 7) / 8
shouldInterpolate = True
dataProvider = DataProvidersAndConsumers.createSequentialAccessDPForURL(
url)
if dataProvider is None:
print("Couldn't create Image Data provider!")
return
# Create a Quartz color space object appropriate for the image type.
# These user written functions create the color space object
# and that reference must be released by this code.
if isRGB:
colorspace = Utilities.getTheCalibratedRGBColorSpace()
else:
colorspace = Utilities.getTheCalibratedGrayColorSpace()
image = Quartz.CGImageCreate(
width,
height,
bitsPerComponent,
bitsPerPixel,
bytesPerRow,
colorspace,
Quartz.kCGImageAlphaNone,
dataProvider,
None,
shouldInterpolate,
Quartz.kCGRenderingIntentDefault,
)
del dataProvider
if image is None:
print("Couldn't create CGImageRef for this data!")
return
imageRect = Quartz.CGRectMake(0.0, 0.0, width, height)
# Draw the image into the rectangle.
Quartz.CGContextDrawImage(context, imageRect, image)
def cfDataCreatePDFDocumentFromCommand(command):
# Media rect for the drawing. In a real application this
# should be the bounding rectangle of the graphics
# that will be the PDF content.
mediaRect = CGRectMake(0, 0, 612, 792)
# Create a dictionary to hold the optional information describing the PDF data.
dict = {}
# Add the creator and title information to the PDF content.
dict[kCGPDFContextTitle] = "Pasted From Sample Quartz Application"
dict[kCGPDFContextCreator] = "Sample Quartz Application"
# Create a mutable CFData object with unlimited capacity.
data = CFDataCreateMutable(None, 0)
if data is None:
print >> sys.stderr, "Couldn't make CFData!"
return None
# Create the data consumer to capture the PDF data.
consumer = DataProvidersAndConsumers.myCGDataConsumerCreateWithCFData(data)
if consumer is None:
print >> sys.stderr, "Couldn't create data consumer!"
return None
pdfContext, mediaRect = CGPDFContextCreate(consumer, None, dict)
del consumer
del dict
if pdfContext is None:
print >> sys.stderr, "Couldn't create pdf context!"
return None
mediaRect = CGContextBeginPage(pdfContext)
if 1:
CGContextSaveGState(pdfContext)
if 1:
CGContextClipToRect(pdfContext, mediaRect)
AppDrawing.DispatchDrawing(pdfContext, command)
CGContextRestoreGState(pdfContext)
CGContextEndPage(pdfContext)
return data
def cfDataCreatePDFDocumentFromCommand( command):
# Media rect for the drawing. In a real application this
# should be the bounding rectangle of the graphics
# that will be the PDF content.
mediaRect = CGRectMake(0, 0, 612, 792)
# Create a dictionary to hold the optional information describing the PDF data.
dict = {}
# Add the creator and title information to the PDF content.
dict[kCGPDFContextTitle] = "Pasted From Sample Quartz Application"
dict[kCGPDFContextCreator] = "Sample Quartz Application"
# Create a mutable CFData object with unlimited capacity.
data = CFDataCreateMutable(None, 0)
if data is None:
print >>sys.stderr, "Couldn't make CFData!"
return None
# Create the data consumer to capture the PDF data.
consumer = DataProvidersAndConsumers.myCGDataConsumerCreateWithCFData(data)
if consumer is None:
print >>sys.stderr, "Couldn't create data consumer!"
return None
pdfContext, mediaRect = CGPDFContextCreate(consumer, None, dict)
del consumer
del dict
if pdfContext is None:
print >>sys.stderr, "Couldn't create pdf context!"
return None
mediaRect = CGContextBeginPage(pdfContext)
if 1:
CGContextSaveGState(pdfContext)
if 1:
CGContextClipToRect(pdfContext, mediaRect)
AppDrawing.DispatchDrawing(pdfContext, command)
CGContextRestoreGState(pdfContext)
CGContextEndPage(pdfContext)
return data
def doImageWithCallbacksCreatedFromURL(context, url, width, height,
bitsPerComponent, isRGB):
if isRGB:
bitsPerPixel = bitsPerComponent * 3
else:
bitsPerPixel = bitsPerComponent
bytesPerRow = ((width * bitsPerPixel) + 7)/8
shouldInterpolate = True
dataProvider = DataProvidersAndConsumers.createSequentialAccessDPForURL(url)
if dataProvider is None:
print >>sys.stderr, "Couldn't create Image Data provider!"
return
# Create a Quartz color space object appropriate for the image type.
# These user written functions create the color space object
# and that reference must be released by this code.
if isRGB:
colorspace = Utilities.getTheCalibratedRGBColorSpace()
else:
colorspace = Utilities.getTheCalibratedGrayColorSpace()
image = CGImageCreate(width, height, bitsPerComponent,
bitsPerPixel, bytesPerRow, colorspace,
kCGImageAlphaNone, dataProvider, None, shouldInterpolate,
kCGRenderingIntentDefault)
del dataProvider
if image is None:
print >>sys.stder, "Couldn't create CGImageRef for this data!"
return
imageRect = CGRectMake(0.0, 0.0, width, height)
# Draw the image into the rectangle.
CGContextDrawImage(context, imageRect, image)
def doColorRampSubImage(context):
# Start 4 scanlines from the top and 16 pixels from the left edge,
# skip the last 40 scanlines of the image and the right
# most 64 pixels.
insetLeft = 16
insetTop = 4
insetRight = 64
insetBottom = 40
fullImageWidth = 256
fullImageHeight = 256
subImageWidth = fullImageWidth-insetLeft-insetRight
subImageHeight = fullImageHeight-insetTop-insetBottom
bitsPerComponent = 8
bitsPerPixel = 24
bytesPerRow = fullImageWidth * 3
shouldInterpolate = True
imageSubRect = CGRectMake(
insetLeft, insetTop, subImageWidth, subImageHeight)
colorspace = Utilities.getTheCalibratedRGBColorSpace()
if hasattr(Quartz, 'CGImageCreateWithImageInRect'):
imageDataProvider = DataProvidersAndConsumers.createRGBRampDataProvider()
if imageDataProvider is None:
print >>sys.stderr, "Couldn't create Image Data provider!"
return
fullImage = CGImageCreate(fullImageWidth, fullImageHeight,
bitsPerComponent, bitsPerPixel,
bytesPerRow, colorspace, kCGImageAlphaNone,
imageDataProvider, None, shouldInterpolate,
kCGRenderingIntentDefault)
if fullImage is not None:
image = CGImageCreateWithImageInRect(fullImage, imageSubRect)
# release the full image since it is no longer required.
del fullImage
# If the image hasn't been created yet, this code uses the
# customized data provider to do so.
if image is None:
imageDataProvider = createRGBRampSubDataProvider(imageSubRect)
if imageDataProvider is None:
print >>sys.stderr, "Couldn't create Image Data provider!"
return
# By supplying bytesPerRow, the extra data at the end of
# each scanline and the beginning of the next is properly skipped.
image = CGImageCreate(subImageWidth, subImageHeight,
bitsPerComponent, bitsPerPixel,
bytesPerRow, colorspace, kCGImageAlphaNone,
imageDataProvider, None, shouldInterpolate,
kCGRenderingIntentDefault)
# This code no longer needs the data provider.
del imageDataProvider
if image is None:
print >>sys.stderr, "Couldn't create CGImageRef for this data!"
return
# Draw the subimage.
rect = CGRectMake(0, 0, subImageWidth, subImageHeight)
CGContextDrawImage(context, rect, image)
def doColorRampSubImage(context):
# Start 4 scanlines from the top and 16 pixels from the left edge,
# skip the last 40 scanlines of the image and the right
# most 64 pixels.
insetLeft = 16
insetTop = 4
insetRight = 64
insetBottom = 40
fullImageWidth = 256
fullImageHeight = 256
subImageWidth = fullImageWidth-insetLeft-insetRight
subImageHeight = fullImageHeight-insetTop-insetBottom
bitsPerComponent = 8
bitsPerPixel = 24
bytesPerRow = fullImageWidth * 3
shouldInterpolate = True
imageSubRect = CGRectMake(
insetLeft, insetTop, subImageWidth, subImageHeight)
colorspace = Utilities.getTheCalibratedRGBColorSpace()
if hasattr(Quartz, 'CGImageCreateWithImageInRect'):
imageDataProvider = DataProvidersAndConsumers.createRGBRampDataProvider()
if imageDataProvider is None:
print >>sys.stderr, "Couldn't create Image Data provider!"
return
fullImage = CGImageCreate(fullImageWidth, fullImageHeight,
bitsPerComponent, bitsPerPixel,
bytesPerRow, colorspace, kCGImageAlphaNone,
imageDataProvider, None, shouldInterpolate,
kCGRenderingIntentDefault)
if fullImage is not None:
image = CGImageCreateWithImageInRect(fullImage, imageSubRect)
# release the full image since it is no longer required.
del fullImage
# If the image hasn't been created yet, this code uses the
# customized data provider to do so.
if image is None:
imageDataProvider = createRGBRampSubDataProvider(imageSubRect)
if imageDataProvider is None:
print >>sys.stderr, "Couldn't create Image Data provider!"
return
# By supplying bytesPerRow, the extra data at the end of
# each scanline and the beginning of the next is properly skipped.
image = CGImageCreate(subImageWidth, subImageHeight,
bitsPerComponent, bitsPerPixel,
bytesPerRow, colorspace, kCGImageAlphaNone,
imageDataProvider, None, shouldInterpolate,
kCGRenderingIntentDefault)
# This code no longer needs the data provider.
del imageDataProvider
if image is None:
print >>sys.stderr, "Couldn't create CGImageRef for this data!"
return
# Draw the subimage.
rect = CGRectMake(0, 0, subImageWidth, subImageHeight)
CGContextDrawImage(context, rect, image)