Vcl.Imaging.pngimage.TPngImage.Filters
Delphi
property Filters: TFilters read fFilters write fFilters;
C++
__property TFilters Filters = {read=fFilters, write=fFilters, nodefault};
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
property | public | Vcl.Imaging.pngimage.pas Vcl.Imaging.pngimage.hpp |
Vcl.Imaging.pngimage | TPngImage |
Description
Specifies the filters applied to the png image.
Use the Filters property to check or set the filter algorithms used on the png image. The filters specified by the Filters property are used before compressing the image. The main purpose of the filter algorithm is to prepare the image for optimal compression. The following table lists the possible values and their meaning.
Value | Meaning |
---|---|
pfNone |
No filter is applied; scan lines are stored directly. |
pfSub |
The Sub algorithm is used. |
pfUp |
The Up algorithm is used. |
pfAverage |
The Average algorithm is used. |
pfPaeth |
The Paeth algorithm is used. |