point coord(node_t * n)
{
pointf pf;
pf.x = ND_pos(n)[0];
pf.y = ND_pos(n)[1];
return cvt2pt(pf);
}
void do_graph_label(graph_t* g)
{
char *p, *pos;
int pos_ix;
/* it would be nice to allow multiple graph labels in the future */
if ((p = agget(g,"label"))) {
g->u.label = make_label(p,
late_float(g,agfindattr(g,"fontsize"),DEFAULT_FONTSIZE,MIN_FONTSIZE),
late_nnstring(g,agfindattr(g,"fontname"),DEFAULT_FONTNAME),
late_nnstring(g,agfindattr(g,"fontcolor"),DEFAULT_COLOR),g);
pos = agget(g,"labelloc");
if (!g->u.left_to_right) {
if (!pos || (pos[0] != 'b')) pos_ix = TOP_IX;
else pos_ix = BOTTOM_IX;
g->u.border[pos_ix] = cvt2pt(g->u.label->dimen);
}
else {
/* when rotated, the labels will be restored to TOP or BOTTOM */
if (!pos || (pos[0] != 'b')) pos_ix = RIGHT_IX;
else pos_ix = LEFT_IX;
g->u.border[pos_ix].x = g->u.label->dimen.y;
g->u.border[pos_ix].y = g->u.label->dimen.x;
}
}
}
point coord(node_t *n)
{
pointf pf;
pf.x = n->u.pos[0];
pf.y = n->u.pos[1];
return cvt2pt(pf);
}
void osize_label(textlabel_t * label, int *b, int *t, int *l, int *r)
{
point pt, sz2;
pointf dimen;
dimen = label->dimen;
PAD(dimen);
sz2 = cvt2pt(label->dimen);
sz2.x /= 2;
sz2.y /= 2;
pt = add_points(label->p, sz2);
if (*r < pt.x)
*r = pt.x;
if (*t < pt.y)
*t = pt.y;
pt = sub_points(label->p, sz2);
if (*l > pt.x)
*l = pt.x;
if (*b > pt.y)
*b = pt.y;
}
/* do_graph_label:
* If the ifdef'ed parts are added, clusters are guaranteed not
* to overlap and have sufficient room for the label. The problem
* is this approach does not use the actual size of the cluster, so
* the resulting cluster tends to be far too large.
*/
void do_graph_label(graph_t* sg)
{
char *p, *pos, *just;
int pos_ix;
GVC_t *gvc = GD_gvc(sg->root);
/* it would be nice to allow multiple graph labels in the future */
if ((p = agget(sg,"label"))) {
char pos_flag;
int html = aghtmlstr(p);
GD_has_labels(sg->root) |= GRAPH_LABEL;
GD_label(sg) = make_label(gvc, html,strdup_and_subst_graph(p,sg),
late_double(sg,agfindattr(sg,"fontsize"),DEFAULT_FONTSIZE,MIN_FONTSIZE),
late_nnstring(sg,agfindattr(sg,"fontname"),DEFAULT_FONTNAME),
late_nnstring(sg,agfindattr(sg,"fontcolor"),DEFAULT_COLOR),sg);
if (html) {
if (make_html_label(gvc, GD_label(sg), sg))
agerr (AGPREV, "in label of graph %s\n", sg->name);
}
/* set label position */
pos = agget(sg,"labelloc");
if (sg != sg->root) {
if (pos && (pos[0] == 'b')) pos_flag = LABEL_AT_BOTTOM;
else pos_flag = LABEL_AT_TOP;
}
else {
if (pos && (pos[0] == 't')) pos_flag = LABEL_AT_TOP;
else pos_flag = LABEL_AT_BOTTOM;
}
just = agget(sg,"labeljust");
if (just) {
if (just[0] == 'l') pos_flag |= LABEL_AT_LEFT;
else if (just[0] == 'r') pos_flag |= LABEL_AT_RIGHT;
}
GD_label_pos(sg) = pos_flag;
if(!GD_left_to_right(sg->root)) {
point dpt;
dpt = cvt2pt(GD_label(sg)->dimen);
if (GD_label_pos(sg) & LABEL_AT_TOP) pos_ix = TOP_IX;
else pos_ix = BOTTOM_IX;
GD_border(sg)[pos_ix] = dpt;
#if 0
if(g != g->root) {
GD_border(g)[LEFT_IX].x = dpt.x/2;
GD_border(g)[RIGHT_IX].x = dpt.x/2;
GD_border(g)[LEFT_IX].y = 0;
GD_border(g)[RIGHT_IX].y = 0;
}
#endif
}
else {
point dpt;
dpt = cvt2pt(GD_label(sg)->dimen);
/* when rotated, the labels will be restored to TOP or BOTTOM */
if (GD_label_pos(sg) & LABEL_AT_TOP) pos_ix = RIGHT_IX;
else pos_ix = LEFT_IX;
GD_border(sg)[pos_ix].x = dpt.y;
GD_border(sg)[pos_ix].y = dpt.x;
#if 0
if(g != g->root) {
GD_border(g)[TOP_IX].y = dpt.x/2;
GD_border(g)[BOTTOM_IX].y = dpt.x/2;
GD_border(g)[TOP_IX].x = 0;
GD_border(g)[BOTTOM_IX].x = 0;
}
#endif
}
}
}
