/** Update handle array and handle positions after changes.
* @param bezier A bezierconn to update.
*/
void
bezierconn_update_data (BezierConn *bezier)
{
int i;
DiaObject *obj = &bezier->object;
/* handle the case of whole points array update (via set_prop) */
if (3*bezier->bezier.num_points-2 != obj->num_handles) {
/* also maintain potential connections */
ConnectionPoint *cps = bezier->object.handles[0]->connected_to;
ConnectionPoint *cpe = bezier->object.handles[obj->num_handles-1]->connected_to;
g_assert(0 == obj->num_connections);
if (cps)
object_unconnect (&bezier->object, bezier->object.handles[0]);
if (cpe)
object_unconnect (&bezier->object, bezier->object.handles[obj->num_handles-1]);
/* delete the old ones */
for (i = 0; i < obj->num_handles; i++)
g_free(obj->handles[i]);
g_free(obj->handles);
obj->num_handles = 3*bezier->bezier.num_points-2;
obj->handles = g_new(Handle*, obj->num_handles);
new_handles(bezier, bezier->bezier.num_points);
/* we may assign NULL once more here */
if (cps)
object_connect(&bezier->object, bezier->object.handles[0], cps);
if (cpe)
object_connect(&bezier->object, bezier->object.handles[obj->num_handles-1], cpe);
}
static void
compound_state_set (CompoundState * state, Compound * comp)
{
gint i, num_handles;
Handle * h;
DiaObject * obj;
ArmHandleState * ahs;
obj = &comp->object;
comp->line_width = state->line_width;
comp->line_color = state->line_color;
adjust_handle_count_to (comp, state->num_handles);
num_handles = comp->object.num_handles;
for (i = 0; i < num_handles; i++)
{
h = &comp->handles[i];
ahs = &state->handle_states[i];
h->pos = ahs->pos;
if (h->connected_to != ahs->connected_to)
{
if (h->connected_to)
object_unconnect (obj, h);
if (ahs->connected_to)
object_connect (obj, h, ahs->connected_to);
}
}
comp->mount_point.pos = comp->handles[0].pos;
compound_update_data (comp);
compound_sanity_check (comp, "Restored state");
}
static void
unconnect_revert(struct UnconnectChange *change, Diagram *dia)
{
object_connect(change->obj, change->handle, change->connectionpoint);
object_add_updates(change->obj, dia);
}
static void
connect_apply(struct ConnectChange *change, Diagram *dia)
{
object_connect(change->obj, change->handle, change->connectionpoint);
object_add_updates(change->obj, dia);
change->obj->ops->move_handle(change->obj, change->handle ,
&change->connectionpoint->pos,
change->connectionpoint,
HANDLE_MOVE_CONNECTED, 0);
object_add_updates(change->obj, dia);
}
static void
bus_change_revert(struct PointChange *change, DiaObject *obj)
{
switch (change->type) {
case TYPE_ADD_POINT:
bus_remove_handle((Bus *)obj, change->handle);
break;
case TYPE_REMOVE_POINT:
bus_add_handle((Bus *)obj, &change->point, change->handle);
if (change->connected_to) {
object_connect(obj, change->handle, change->connected_to);
}
break;
}
bus_update_data((Bus *)obj);
change->applied = 0;
}
static void
polyconn_change_revert(struct PointChange *change, DiaObject *obj)
{
switch (change->type) {
case TYPE_ADD_POINT:
remove_handle((PolyConn *)obj, change->pos);
break;
case TYPE_REMOVE_POINT:
add_handle((PolyConn *)obj, change->pos, &change->point,
change->handle);
if (change->connected_to) {
object_connect(obj, change->handle, change->connected_to);
}
break;
}
change->applied = 0;
}
static void
read_connections(GList *objects, xmlNodePtr layer_node,
GHashTable *objects_hash)
{
ObjectNode obj_node;
GList *list;
xmlNodePtr connections;
xmlNodePtr connection;
char *handlestr;
char *tostr;
char *connstr;
int handle, conn;
DiaObject *to;
list = objects;
obj_node = layer_node->xmlChildrenNode;
while ((list != NULL) && (obj_node != NULL)) {
DiaObject *obj = (DiaObject *) list->data;
/* the obj and there node must stay in sync to properly setup connections */
while (obj_node && (xmlIsBlankNode(obj_node) || XML_COMMENT_NODE == obj_node->type))
obj_node = obj_node->next;
if (!obj_node) break;
if IS_GROUP(obj) {
read_connections(group_objects(obj), obj_node, objects_hash);
} else {
gboolean broken = FALSE;
/* an invalid bounding box is a good sign for some need of corrections */
gboolean wants_update = obj->bounding_box.right >= obj->bounding_box.left
|| obj->bounding_box.top >= obj->bounding_box.bottom;
connections = obj_node->xmlChildrenNode;
while ((connections!=NULL) &&
(xmlStrcmp(connections->name, (const xmlChar *)"connections")!=0))
connections = connections->next;
if (connections != NULL) {
connection = connections->xmlChildrenNode;
while (connection != NULL) {
char *donestr;
if (xmlIsBlankNode(connection)) {
connection = connection->next;
continue;
}
handlestr = (char * )xmlGetProp(connection, (const xmlChar *)"handle");
tostr = (char *) xmlGetProp(connection, (const xmlChar *)"to");
connstr = (char *) xmlGetProp(connection, (const xmlChar *)"connection");
handle = atoi(handlestr);
conn = strtol(connstr, &donestr, 10);
if (*donestr != '\0') { /* Didn't convert it all -- use string */
conn = -1;
}
to = g_hash_table_lookup(objects_hash, tostr);
if (to == NULL) {
message_error(_("Error loading diagram.\n"
"Linked object not found in document."));
broken = TRUE;
} else if (handle < 0 || handle >= obj->num_handles) {
message_error(_("Error loading diagram.\n"
"Connection handle %d does not exist on '%s'."),
handle, to->type->name);
broken = TRUE;
} else {
if (conn >= 0 && conn < to->num_connections) {
object_connect(obj, obj->handles[handle],
to->connections[conn]);
/* force an update on the connection, helpful with (incomplete) generated files */
if (wants_update) {
#if 0
obj->ops->move_handle(obj, obj->handles[handle], &to->connections[conn]->pos,
to->connections[conn], HANDLE_MOVE_CONNECTED,0);
#endif
}
} else {
message_error(_("Error loading diagram.\n"
"Connection point %d does not exist on '%s'."),
conn, to->type->name);
broken = TRUE;
}
}
if (handlestr) xmlFree(handlestr);
if (tostr) xmlFree(tostr);
if (connstr) xmlFree(connstr);
connection = connection->next;
}
/* Fix positions of the connection object for (de)generated files.
* Only done for the last point connected otherwise the intermediate posisitions
* may screw the auto-routing algorithm.
*/
if (!broken && obj && obj->ops->set_props && wants_update) {
/* called for it's side-effect of update_data */
obj->ops->move(obj,&obj->position);
for (handle = 0; handle < obj->num_handles; ++handle) {
if (obj->handles[handle]->connected_to)
obj->ops->move_handle(obj, obj->handles[handle], &obj->handles[handle]->pos,
obj->handles[handle]->connected_to, HANDLE_MOVE_CONNECTED,0);
}
}
}
}
/* Now set up parent relationships. */
connections = obj_node->xmlChildrenNode;
while ((connections!=NULL) &&
(xmlStrcmp(connections->name, (const xmlChar *)"childnode")!=0))
connections = connections->next;
if (connections != NULL) {
tostr = (char *)xmlGetProp(connections, (const xmlChar *)"parent");
if (tostr) {
obj->parent = g_hash_table_lookup(objects_hash, tostr);
if (obj->parent == NULL) {
message_error(_("Can't find parent %s of %s object\n"),
tostr, obj->type->name);
} else {
obj->parent->children = g_list_prepend(obj->parent->children, obj);
}
}
}
list = g_list_next(list);
obj_node = obj_node->next;
}
void
read_connections(GList *objects, xmlNodePtr layer_node,
GHashTable *objects_hash)
{
ObjectNode obj_node;
GList *list;
xmlNodePtr connections;
xmlNodePtr connection;
char *handlestr;
char *tostr;
char *connstr;
int handle, conn;
Object *to;
list = objects;
obj_node = layer_node->childs;
while (list != NULL) {
Object *obj = (Object *) list->data;
if IS_GROUP(obj) {
read_connections(group_objects(obj), obj_node, objects_hash);
} else {
connections = obj_node->childs;
while ((connections!=NULL) &&
(strcmp(connections->name, "connections")!=0))
connections = connections->next;
if (connections != NULL) {
connection = connections->childs;
while (connection != NULL) {
handlestr = xmlGetProp(connection, "handle");
tostr = xmlGetProp(connection, "to");
connstr = xmlGetProp(connection, "connection");
handle = atoi(handlestr);
conn = atoi(connstr);
to = g_hash_table_lookup(objects_hash, tostr);
if (handlestr) free(handlestr);
if (connstr) free(connstr);
if (tostr) free(tostr);
if (to == NULL) {
message_error(_("Error loading diagram.\n"
"Linked object not found in document."));
} else if (conn >= 0 && conn >= to->num_connections) {
message_error(_("Error loading diagram.\n"
"connection point does not exist."));
} else if (handle >= 0 && handle >= obj->num_handles) {
message_error(_("Error loading diagram.\n"
"connection handle does not exist."));
} else {
object_connect(obj, obj->handles[handle],
to->connections[conn]);
}
connection = connection->next;
}
}
}
list = g_list_next(list);
obj_node = obj_node->next;
}
