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#include <Optimizer.h>
Inheritance diagram for pdftron::PDF::MonoImageSettings:Public Types | |
| enum | CompressionMode { e_jbig2, e_flate, e_none, e_ccitt } |
| enum | DownsampleMode { e_off, e_default } |
Public Member Functions | |
| MonoImageSettings () | |
| void | SetImageDPI (double maximum, double resampling) |
| void | SetCompressionMode (enum CompressionMode mode) |
| void | SetDownsampleMode (enum DownsampleMode mode) |
| void | ForceRecompression (bool force) |
| void | ForceChanges (bool force) |
| void | SetJBIG2Threshold (double jbig2_threshold) |
A class that stores image downsampling/recompression settings for monochrome images.
Definition at line 153 of file Optimizer.h.
| Enumerator | |
|---|---|
| e_jbig2 | |
| e_flate | |
| e_none | |
| e_ccitt | |
Definition at line 156 of file Optimizer.h.
| Enumerator | |
|---|---|
| e_off | |
| e_default | |
Definition at line 164 of file Optimizer.h.
| pdftron::PDF::MonoImageSettings::MonoImageSettings | ( | ) |
create an MonoImageSettings object with default options
| void pdftron::PDF::MonoImageSettings::ForceChanges | ( | bool | force | ) |
Sets whether image changes that grow the PDF file should be kept. This is off by default.
| force | if true all image changes will be kept. |
| void pdftron::PDF::MonoImageSettings::ForceRecompression | ( | bool | force | ) |
Sets whether recompression to the specified compression method should be forced when the image is not downsampled. By default the compression method for these images will not be changed.
| force | if true the compression method for all images will be changed to the specified compression mode |
| void pdftron::PDF::MonoImageSettings::SetCompressionMode | ( | enum CompressionMode | mode | ) |
Sets the output compression mode for monochrome images The default value is e_ccitt (CCITT group 4 compression)
| mode | the compression mode to set |
| void pdftron::PDF::MonoImageSettings::SetDownsampleMode | ( | enum DownsampleMode | mode | ) |
Sets the downsample mode for monochrome images The default value is e_default
| mode | the compression mode to set |
| void pdftron::PDF::MonoImageSettings::SetImageDPI | ( | double | maximum, |
| double | resampling | ||
| ) |
Sets the maximum and resampling dpi for monochrome images. By default these are set to 144 and 96 respectively.
| maximum | the highest dpi of an image before it will be resampled |
| resampling | the image dpi to resample to if an image is encountered over the maximum dpi |
| void pdftron::PDF::MonoImageSettings::SetJBIG2Threshold | ( | double | jbig2_threshold | ) |
Sets the quality for lossy compression modes from 1 to 10 where 10 is lossless (if possible). The default value for JBIG2 is 8.5. The setting is ignored for FLATE.
