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pw-dot: added -9/--90 for outputting using 'splines = ortho'

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This results in always drawing edges with 90-degree angles instead of
smooth splines. Graphs laid out this way may be look nicer sometimes,
but it is slower to lay out with large graphs.
This commit is contained in:
Erkki Seppälä 2021-04-02 11:50:45 +03:00
parent 71b53f1590
commit 6a10ac36aa
2 changed files with 19 additions and 2 deletions
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5
man/pw-dot.1.xml.in
View file

@ -63,6 +63,11 @@ This file is part of PipeWire.
<optdesc><p>Lay the graph from left to right, instead of dot's default top to bottom.</p></optdesc>
</option>
<option>
<p><opt>-9 | --90</opt></p>
<optdesc><p>Lay the graph using 90-degree angles in edges.</p></optdesc>
</option>
</options>
<section name="Authors">

16
src/tools/pw-dot.c
View file

@ -54,6 +54,7 @@ struct data {
struct spa_list globals;
char *dot_str;
const char *dot_rankdir;
bool dot_orthoedges;
bool show_all;
bool show_smart;
@ -464,6 +465,11 @@ static int draw_graph(struct data *d, const char *path)
dot_str_add(&d->dot_str, "rankdir = \"%s\";\n", d->dot_rankdir);
}
if (d->dot_orthoedges) {
/* enable orthogonal edges */
dot_str_add(&d->dot_str, "splines = ortho;\n");
}
/* iterate the globals */
spa_list_for_each(g, &d->globals, link) {
/* skip null and non-info globals */
@ -764,7 +770,8 @@ static void show_help(const char *name)
" -d, --detail Show all object properties\n"
" -r, --remote Remote daemon name\n"
" -o, --output Output file (Default %s)\n"
" -L, --lr Use left-right rank direction\n",
" -L, --lr Use left-right rank direction\n"
" -9, --90 Use orthogonal edges\n",
name,
DEFAULT_DOT_PATH);
}
@ -784,13 +791,14 @@ int main(int argc, char *argv[])
{ "remote", required_argument, NULL, 'r' },
{ "output", required_argument, NULL, 'o' },
{ "lr", no_argument, NULL, 'L' },
{ "90", no_argument, NULL, '9' },
{ NULL, 0, NULL, 0}
};
int c;
pw_init(&argc, &argv);
while ((c = getopt_long(argc, argv, "hVasdr:o:L", long_options, NULL)) != -1) {
while ((c = getopt_long(argc, argv, "hVasdr:o:L9", long_options, NULL)) != -1) {
switch (c) {
case 'h' :
show_help(argv[0]);
@ -827,6 +835,10 @@ int main(int argc, char *argv[])
data.dot_rankdir = "LR";
fprintf(stderr, "set rank direction to LR\n");
break;
case '9' :
data.dot_orthoedges = true;
fprintf(stderr, "orthogonal edges enabled\n");
break;
default:
show_help(argv[0]);
return -1;