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/* Copyright (c) 2006-2010 Jonas Fonseca <>
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
#ifndef TIG_GRAPH_H
#define TIG_GRAPH_H
#define GRAPH_COLORS 7
struct graph_symbol {
unsigned int color:8;
unsigned int bold:1;
unsigned int commit:1;
unsigned int branch:1;
unsigned int boundary:1;
unsigned int initial:1;
unsigned int merge:1;
unsigned int vbranch:1;
unsigned int branched:1;
struct graph_canvas {
size_t size; /* The width of the graph array. */
struct graph_symbol *symbols; /* Symbols for this row. */
struct graph_column {
struct graph_symbol symbol;
char id[SIZEOF_REV]; /* Parent SHA1 ID. */
struct graph_row {
size_t size;
struct graph_column *columns;
struct graph {
struct graph_row row;
struct graph_row parents;
size_t position;
size_t expanded;
const char *id;
struct graph_canvas *canvas;
size_t colors[GRAPH_COLORS];
bool has_parents;
bool is_boundary;
void done_graph(struct graph *graph);
bool graph_render_parents(struct graph *graph);
bool graph_add_commit(struct graph *graph, struct graph_canvas *canvas,
const char *id, const char *parents, bool is_boundary);
struct graph_column *graph_add_parent(struct graph *graph, const char *parent);
const char *graph_symbol_to_ascii(struct graph_symbol *symbol);
const char *graph_symbol_to_utf8(struct graph_symbol *symbol);
const chtype *graph_symbol_to_chtype(struct graph_symbol *symbol);