include/tig/graph.h

   1 /* Copyright (c) 2006-2014 Jonas Fonseca <jonas.fonseca@gmail.com>
   2  *
   3  * This program is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU General Public License as
   5  * published by the Free Software Foundation; either version 2 of
   6  * the License, or (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #ifndef TIG_GRAPH_H
  15 #define TIG_GRAPH_H
  16
  17 #define GRAPH_COMMIT_COLOR      (-1)
  18 #define GRAPH_COLORS            14
  19
  20 struct graph;
  21 struct graph_symbol;
  22
  23 struct graph_canvas {
  24         size_t size;                    /* The width of the graph array. */
  25         struct graph_symbol *symbols;   /* Symbols for this row. */
  26 };
  27
  28 typedef bool (*graph_symbol_iterator_fn)(void *, const struct graph *graph, const struct graph_symbol *, int color_id, bool);
  29
  30 struct graph {
  31         void *private;
  32
  33         void (*done)(struct graph *graph);
  34         void (*done_rendering)(struct graph *graph);
  35
  36         bool (*add_commit)(struct graph *graph, struct graph_canvas *canvas,
  37                            const char *id, const char *parents, bool is_boundary);
  38         bool (*add_parent)(struct graph *graph, const char *parent);
  39         bool (*render_parents)(struct graph *graph, struct graph_canvas *canvas);
  40
  41         void (*foreach_symbol)(const struct graph *graph, const struct graph_canvas *canvas, graph_symbol_iterator_fn fn, void *data);
  42
  43         const char *(*symbol_to_ascii)(const struct graph_symbol *symbol);
  44         const char *(*symbol_to_utf8)(const struct graph_symbol *symbol);
  45         const chtype *(*symbol_to_chtype)(const struct graph_symbol *symbol);
  46 };
  47
  48 struct graph *init_graph(void);
  49
  50 #endif
  51
  52 /* vim: set ts=8 sw=8 noexpandtab: */