Optimization
The Optimization properties determine the optimization of printed files. Please note that properties are case-sensitive:
NAME
|
VALUES
|
DEFINITION |
Blending |
One of following integer values:
0 - Normal 1 - Multiply 2 - Screen 3 - Overlay 4 - Darken 5 - Lighten 6 - ColorDodge 7 - ColorBurn 8 - HardLight 9 - SoftLight 10 - Difference 11 - Exclusion
|
Specifies the blending mode used for line art when printing from certain applications (for example AutoCAD when line overlay is enabled). The functions of blending modes are detailed below this table.
Default value: 4 |
DeTesselation |
0 (None) 1 (Simple) |
Enables/disables detesselation for sequences of triangles. Detesselation is useful when printing from AutoCAD and enables the creation of smaller, optimized PDF files.
Default value: 1 (Simple)
|
UseTransparency |
Enables transparency drawing. The PDF-XChange Drivers API can detect relevant drawing sequences and replace them with transparent versions. Please note that this property is not available in PDF/A format.
Default value: True
|
|
seMaskedImages |
Enables the use of masked images, which produces smaller files for some drawing sequences.
Default value: True
|
|
GrayPaletteAsRGB |
Enables the storage of grayscale image palettes as RGB palettes. The same value is used for each element of the grayscale palette in the RGB palette.
Default value: False
|
|
ImagesOptimization |
Enables the optimization of image sequences. This process requires multiple image manipulations but significantly reduces the file size and increases viewing quality.
Default value: True
|
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EnableSwapping |
Enables the swapping of images to disk during image optimization. When this property is set to False the process of optimization is faster but requires more memory.
Default value: True
|
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SwapToDiskLimit |
1-8 |
Defines the image size (in megabytes) at which images are swapped to disk when EnableSwapping is set to True.
Default value: 1
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Blending Modes
The blending modes available in the PDF-XChange Drivers API are as follows:
•Normal maintains the Fill Color.
•Multiply multiples the Fill Color value with the color value of the underlying content. The resulting color will be at least as dark as one of the original values.
•Screen multiplies the complements of the Fill Color value with the color value of underlying content and then complements the result. The resulting color will be at least as light as one of the original values.
•Overlay either multiplies or screens the Fill Color value with the color value of underlying content, depending on the color value of the latter. The Fill Color will overlay the underlying content while preserving its highlights and shadows. The color of underlying content will be blended with the Fill Color to reflect its shade.
•Darken selects the darker of the Fill Color value and the color value of underlying content.
•Lighten selects the lighter of the Fill Color value and the color value of underlying content.
•Color Dodge brightens the color of the underlying content to reflect the Fill Color. Please note that if black is used as the Fill Color then there will be no effect.
•Color Burn darkens the color of the underlying content to reflect the Fill Color. Please note that if white is used as the Fill Color then there will be no effect.
•Hardlight either multiples or screens the Fill Color value with the color value of underlying content, depending on the Fill Color value. This creates the effect of shining a strong spotlight on the underlying color.
•Softlight either darkens or lightens the colors, depending on the Fill Color value. This creates the effect of shining a diffused spotlight on the underlying color.
•Difference subtracts the darker of the constituent colors from the lighter color.
•Exclusion performs a less contrasted version of the Difference option.