File indexing completed on 2025-03-09 04:09:53 

0001 /* Flattning functions for xcftools
0002  *
0003  * This file was written by Henning Makholm <henning@makholm.net>
0004  * It is hereby in the public domain.
0005  * 
0006  * In jurisdictions that do not recognise grants of copyright to the
0007  * public domain: I, the author and (presumably, in those jurisdictions)
0008  * copyright holder, hereby permit anyone to distribute and use this code,
0009  * in source code or binary form, with or without modifications. This
0010  * permission is world-wide and irrevocable.
0011  *
0012  * Of course, I will not be liable for any errors or shortcomings in the
0013  * code, since I give it away without asking any compenstations.
0014  *
0015  * If you use or distribute this code, I would appreciate receiving
0016  * credit for writing it, in whichever way you find proper and customary.
0017  */
0018 
0019 #ifndef FLATTEN_H
0020 #define FLATTEN_H
0021 
0022 #include "xcftools.h"
0023 #include "pixels.h"
0024 
0025 #define PERHAPS_ALPHA_CHANNEL (NEWALPHA(0,1))
0026 #define FORCE_ALPHA_CHANNEL (NEWALPHA(0,2))
0027 #define CHECKERED_BACKGROUND (NEWALPHA(0,200))
0028 struct FlattenSpec {
0029   struct tileDimensions dim ;
0030   rgba default_pixel ;
0031   int numLayers ;
0032   struct xcfLayer *layers ;
0033 
0034   const char * transmap_filename ;
0035   const char * output_filename ;
0036   enum out_color_mode {
0037     COLOR_BY_FILENAME,
0038     COLOR_BY_CONTENTS,
0039     COLOR_INDEXED,
0040     COLOR_RGB,
0041     COLOR_GRAY,
0042     COLOR_MONO
0043   } out_color_mode ;
0044   enum { ALLOW_PARTIAL_TRANSPARENCY,
0045          DISSOLVE_PARTIAL_TRANSPARENCY,
0046          FORBID_PARTIAL_TRANSPARENCY,
0047          PARTIAL_TRANSPARENCY_IMPOSSIBLE
0048   } partial_transparency_mode ;
0049   enum { USE_CANVAS = 0,
0050          MANUAL_OFFSET = 1,
0051          MANUAL_CROP = 2,
0052          AUTOCROP = 4 } window_mode ;
0053   int process_in_memory ;
0054   int gimpish_indexed ;
0055 };
0056 
0057 /* From flatspec.c */
0058 
0059 void init_flatspec(struct FlattenSpec *);
0060 
0061 int add_layer_request(struct FlattenSpec *,const char *name);
0062 struct xcfLayer *lastlayerspec(struct FlattenSpec *,const char *option);
0063 
0064 typedef enum out_color_mode (*guesser) (struct FlattenSpec *,rgba **);
0065 
0066 /* Call this after processing options, and after opening the XCF file */
0067 int complete_flatspec(struct FlattenSpec *,guesser);
0068 int analyse_colormode(struct FlattenSpec *,rgba **allPixels,guesser);
0069 
0070 /* From flatten.c */
0071 
0072 typedef void (*lineCallback)(unsigned num,rgba *pixels);
0073 int flattenIncrementally(struct FlattenSpec *,lineCallback);
0074 rgba **flattenAll(struct FlattenSpec*);
0075 void shipoutWithCallback(struct FlattenSpec *,rgba **pixels,lineCallback);
0076 
0077 #endif /* FLATTEN_H */