TPNGImage help

 

• Chunks are organized in a clever way with an ancestor class to handle all the chunks and derived classes to handle the different kinds
• The chunks engine allows upgrades by registering new chunk types to include new features
• Full cyclic redundancy check for all the chunks
• Full access to all the data from the chunks
• Several derived classes from TChunk to obtain different information such as text keyword and more
• Gamma chunk is used to change the image gamma to be displayed as when it was encoded.
• No need for any external library, everything is compiled within your exe project
• Full comented and clear source code.
• Can read all the images from the official PNG test suite (see showcase 2).
• Can load interlaced and non interlaced images
• Ability to assign data from a tbitmap or bitmap handle
• The PNG images may also be saved
• Saving with interlace is now fully supported.
• The encoder is optimized to create really small final images when saving.
• No chunk is lost when loading an image
• Portable Network Graphics partial transparent images are now supported
• Trigger to disable use of Delphi VCL
• Full speed when loading and saving
• Allows to select the filters to test when saving images to create the smallest image as possible
• Improved error handling engine to allow user to detect easily all the errors. 
• Better chunk access system, now the engine selects the best place to put chunks when adding manually.
• Provides now accesses to the image data and to the transparency alpha data.
• Allows to select the compression level for ZLIB.
• Allows the set the maximum size for IDAT chunks (and then dividing the rest of the data in new chunks). 
• Complete help file using HTML help