/* endAnchor:
* Pop context pushed by initAnchor.
* This is done by ending current anchor, restoring old values and
* freeing new, and reopening previous anchor if necessary.
*
* NB: We don't save or restore geometric map info. This is because
* this preservation of map context is only necessary for SVG-like
* systems where graphical items are wrapped in an anchor, and we map
* top-down. For ordinary map anchors, this is all done bottom-up, so
* the geometric map info at the higher level hasn't been emitted yet.
*/
static void
endAnchor (GVJ_t* job, htmlmap_data_t* save, int openPrev)
{
obj_state_t *obj = job->obj;
if (obj->url || obj->explicit_tooltip)
gvrender_end_anchor(job);
RESET(url);
RESET(tooltip);
RESET(target);
RESET(id);
obj->explicit_tooltip = save->explicit_tooltip;
if (openPrev && (obj->url || obj->explicit_tooltip))
gvrender_begin_anchor(job,
obj->url, obj->tooltip, obj->target, obj->id);
}
/* initAnchor:
* Save current map values
* Initialize fields in job->obj pertaining to anchors.
* In particular, this also sets the output rectangle.
* If there is something to do, close current anchor if
* necessary, start the anchor and returns 1.
* Otherwise, it returns 0.
*
* FIX: Should we provide a tooltip if none is set, as is done
* for nodes, edges, etc. ?
*/
static int
initAnchor (GVJ_t* job, htmlenv_t* env, htmldata_t* data, boxf b, htmlmap_data_t* save,
int closePrev)
{
obj_state_t *obj = job->obj;
int changed;
char* id;
static int anchorId;
int internalId = 0;
agxbuf xb;
char intbuf[30]; /* hold 64-bit decimal integer */
unsigned char buf[SMALLBUF];
save->url = obj->url;
save->tooltip = obj->tooltip;
save->target = obj->target;
save->id = obj->id;
save->explicit_tooltip = obj->explicit_tooltip;
id = data->id;
if (!id || !*id) { /* no external id, so use the internal one */
agxbinit(&xb, SMALLBUF, buf);
if (!env->objid) {
env->objid = strdup (getObjId (job, obj->u.n, &xb));
env->objid_set = 1;
}
agxbput (&xb, env->objid);
sprintf (intbuf, "_%d", anchorId++);
agxbput (&xb, intbuf);
id = agxbuse (&xb);
internalId = 1;
}
changed = initMapData (job, NULL, data->href, data->title, data->target, id, obj->u.g);
if (internalId)
agxbfree (&xb);
if (changed) {
if (closePrev && (save->url || save->explicit_tooltip))
gvrender_end_anchor(job);
if (obj->url || obj->explicit_tooltip) {
emit_map_rect(job, b);
gvrender_begin_anchor(job,
obj->url, obj->tooltip, obj->target, obj->id);
}
}
return changed;
}
static void doAnchorEnd(GVJ_t * job)
{
gvrender_end_anchor(job);
}