4.3.1. Dbus

The Navit dbus interface allows you to control certain aspects of Navit from outside the program. This document displays the requirements and implementation details of the Navit dbus interface.

4.3.2. Enabling

To be able to send and receive signals from Navit, you must enable it in navit.xml. Change line 13 to the following:

<plugin path="$NAVIT_LIBDIR/*/${NAVIT_LIBPREFIX}libbinding_dbus.so" active="yes"/>

4.3.3. Common actions

4.3.3.1. Zoom in/out

Zoom to level 500:

dbus-send  --print-reply --session --dest=org.navit_project.navit /org/navit_project/navit/default_navit org.navit_project.navit.navit.set_attr string:"zoom" variant:int32:500

Zoom in by factor of 2:

dbus-send  --print-reply --session --dest=org.navit_project.navit /org/navit_project/navit/default_navit org.navit_project.navit.navit.zoom int32:2

Zoom out by factor of 2:

dbus-send  --print-reply --session --dest=org.navit_project.navit /org/navit_project/navit/default_navit org.navit_project.navit.navit.zoom int32:-2

4.3.3.2. Set Position/Destination

Set position to longitude 24.0, latitude 65.0:

dbus-send  --print-reply --session --dest=org.navit_project.navit /org/navit_project/navit/default_navit org.navit_project.navit.navit.set_position string:"geo: 24.0 65.0"

Set destination to longitude 24.0, latitude 65.0:

dbus-send  --print-reply --session --dest=org.navit_project.navit /org/navit_project/navit/default_navit org.navit_project.navit.navit.set_destination string:"geo: 24.0 65.0" string:"comment"

4.3.3.3. Set map-view centre

Centre the map to longitude 24.0, latitude 65.0:

dbus-send  --print-reply --session --dest=org.navit_project.navit /org/navit_project/navit/default_navit org.navit_project.navit.navit.set_center_by_string string:"geo: 24.0 65.0"

4.3.3.4. Change map layout

Change layout to “Car-dark”:

dbus-send  --print-reply --session --dest=org.navit_project.navit /org/navit_project/navit/default_navit org.navit_project.navit.navit.set_layout string:"Car-dark"

4.3.3.5. Change vehicle profile

Change profile to “bike”:

dbus-send  --print-reply --session --dest=org.navit_project.navit /org/navit_project/navit/default_navit/default_vehicle org.navit_project.navit.vehicle.set_attr string:"profilename" variant:string:"bike"

4.3.4. Navit DBus details

DBUS Service: “org.navit_project.navit”

DBUS Bus: Session bus

4.3.5. org.navit_project.navit.navit

DBUS Object Path: /org/navit_project/navit/navit/[]

The way navit use dbus is not really the usual way. If you want to control your navit instance (set_destination, zoom,…), you have first to do the following (examples are in python) : 1) get the navit general object

`` object = bus.get_object(“org.navit_project.navit”,”/org/navit_project/navit”)``

get the interface of this object :

`` iface = dbus.Interface(object,dbus_interface=”org.navit_project.navit”)``

get an iterator through navit instances :

`` iter=iface.attr_iter()``

get the object path of the navit instance in your iterator :

`` path = object.get_attr_wi(“navit”,iter)``

get the navit instance you are interested in :

`` navit=bus.get_object(‘org.navit_project.navit’, path[1])``

destroy the iter :

`` iface.attr_iter_destroy(iter)``

The following methods have to be applied on the navit object.

4.3.5.1. Methods

Examples are shown for each command, and when using on the command line must be prefixed by:

dbus-send --print-reply --session --dest=org.navit_project.navit /org/navit_project/navit/default_navit

When a coordinate is specified, the coordinate can be formatted like:

[Proj:]-0xX [-]0xX

where Proj can be mg or garmin. Default: mg. For example:

mg: 0x138a4a 0x5d773f

Or

[Proj:][D][D]Dmm.ss[S][S] N/S [D][D]DMM.ss[S][S]... E/W

[Proj:][-][D]D.d[d]... [-][D][D]D.d[d]

where Proj must be geo. For example:

geo: 24.0 65.0

4.3.5.1.1. draw

Path:	.navit
Arguments:	none
Return:	none
Description:	Forces a redraw of the current view of the map
Example:	org.navit_project.navit.navit.draw

4.3.5.1.2. add_message

Path:	.navit
Arguments:	string: “message”
Return:	none
Description:	FIXME Adds a message to the messages label
Example:	org.navit_project.navit.navit.add_message string:”My Message”

4.3.5.1.3. set_center_by_string

Path:	.navit
Arguments:	string: `coordinates`
Return:	none
Description:	Centres the map over the specified position.
Example:	org.navit_project.navit.navit.set_center_by_string string:”geo: 24.0 65.0”

4.3.5.1.4. set_center

Path:	.navit
Arguments:	integer: `projection` string: `coordinates`
Return:	none
Description:	Centres the map over the specified position.
Example:	org.navit_project.navit.navit.set_center int32:1 string:”geo: 24.0 65.0” org.navit_project.navit.navit.set_center int32:1 int32:0x138a4a int32:0x5d773f

4.3.5.1.5. set_center_screen

Path:	.navit
Arguments:	integer: `pixel_x` integer: `pixel_y`
Return:	none
Description:	Centers the map to a specific position on the screen.
Example:	org.navit_project.navit.navit.set_center_screen int32:200 int32:400

4.3.5.1.6. set_layout

Path:	.navit
Arguments:	string: `layoutname`
Return:	none
Description:	Changes the active map layout.
Example:	org.navit_ project.navit.navit.set_layout string:”car-dark”

4.3.5.1.7. zoom

Path:	.navit
Arguments:	integer: `factor` (integer: `pixel_x` integer: `pixel_y`)
Return:	none
Description:	Zooms into the map (positive `factor`) or out of the map (negative `factor`) by the factor specified. The factor must be integers greater than 1 (zoom in) or less than -1 (zoom out). Optionally, a screen position can be specified in `pixel_x` and `pixel_y` and the function will zoom into that particular position. In order to zoom to a specific zoom-level, use the `set_attr <#set_attr>`__ method.
Example:	org.navit_project.navit.navit.zoom int32:2 org.navit_project.navit.navit.zoom int32:6 int32:200 int32:400

4.3.5.1.8. block

Path:	.navit
Arguments:	integer: `mode`
Return:	none
Description:	FIXME
Example:	org.navit_project.navit.navit.block int32:1

4.3.5.1.9. set_position

Path:	.navit
Arguments:	string: `coordinates` integer: `projection` string: `coordinates` integer: `projection` integer: `longitude` integer: `latitude`
Return:	none
Description:	Sets the current position (useful if no gps position is available).
Example:	org.navit_project. navit.navit.set_position string:”geo: 24.0 65.0” org.navit_project.navit.na vit.set_position int32:1 string:”geo: 24.0 65.0” org.navit_project.navit.navit.se t_position int32:1 int32:0x138a4a int32:0x5d773f

4.3.5.1.10. set_destination

Path:	.navit
Arguments:	string: `coordinates` string:”comment” integer: `projection` string: `coordinates` string:”comment” integer: `projection` integer: `longitude` integer: `latitude` string:”comment”
Return:	none
Description:	Sets the destination for routing.
Example:	org.navit_project.nav it.navit.set_destination string:”geo: 24.0 65.0” org.navit_project.navit.navit .set_destination int32:1 string:”geo: 24.0 65.0” org.navit_project.navit.navit.set_d estination int32:1 int32:0x138a4a int32:0x5d773f

4.3.5.1.11. clear_destination

Path:	.navit
Arguments:	none
Return:	none
Description:	Removes the destination and stops routing.
Example:	org.navit_project.navit.navit.clear_destination

4.3.5.1.12. get_attr

Path:	.navit
Arguments:	string:`attribute`
Return:	string:`attribute` variant:`value`
Description:	Gets the specified attribute value. The attribute can be anything from attr_def.h.
Example:	org. navit_project.navit.navit.get_attr string:”zoom” returns: string "zoom" variant int32 10 org.navit_p roject.navit.navit.get_attr string:”orientation” returns: string "orientation" variant int32 1

4.3.5.1.13. set_attr

Path:	.navit
Arguments:	string:`attribute` variant:`value`
Return:	none
Description:	Sets the specified attribute value. The attribute can be anything from attr_def.h. As shown in the example below, this can be useful to zoom to a specific zoom level, insted of just zooming by a factor as with the `zoom <#zoom>`__ method.
Example:	org.navit_project.navi t.navit.set_attr string:”zoom” variant:int32:500

4.3.5.1.14. export_as_gpx

Path:	.navit
Arguments:	string:`filename`
Return:	none
Description:	Dump the current route, if any, into the file specified in the argument in the GPX format.
Example:	org.navit_project.n avit.navit.export_as_gpx string:”/tmp/route.gpx”

4.3.6. org.navit_project.navit.vehicleprofile

4.3.6.1. Methods

Examples are shown for each command, and when using on the command line must be prefixed by:

dbus-send --print-reply --session --dest=org.navit_project.navit /org/navit_project/navit/default_navit/default_vehicleprofile

4.3.6.1.1. get_attr

Path:	.vehicleprofile
Arguments:	string:`attribute`
Return:	string:`attribute` variant:`value`
Description:	Gets the specified attribute value for the `vehicleprofile`.
Example:	org.navit_pro ject.navit.vehicleprofile.get_attr string:”name” returns: string "name" variant string "car" org.navit_project.nav it.vehicleprofile.get_attr string:”static_speed” returns: string "static_speed" variant int32 5

4.3.6.1.2. set_attr

Path:	.vehicleprofile
Arguments:	string:`attribute` variant:`value`
Return:	none
Description:	Sets the specified attribute value. The example below renames the current `vehicleprofile`. To actually change the `vehicleprofile`, use the `set_attr` method in the `.vehicle` path (see below).
Example:	org.navit_project.navit.vehicleprof ile.set_attr string:”name” variant:string:”bike”

4.3.7. org.navit_project.navit.vehicle

4.3.7.1. Methods

Examples are shown for each command, and when using on the command line must be prefixed by:

dbus-send --print-reply --session --dest=org.navit_project.navit /org/navit_project/navit/default_navit/default_vehicle

4.3.7.1.1. set_attr

Path:	.vehicle
Arguments:	string:`attribute` variant:`value`
Return:	none
Description:	Sets the specified attribute value. The example below changes the current `vehicleprofile` to `"bike"` .
Example:	org.navit_project.navit.vehicle.set _attr string:”profilename” variant:string:”bike”

4.3.8. org.navit_project.navit.route

4.3.8.1. Methods

Examples are shown for each command, and when using on the command line must be prefixed by:

dbus-send --print-reply --session --dest=org.navit_project.navit /org/navit_project/navit/default_navit/default_route

4.3.8.1.1. get_attr

Path:	.route
Arguments:	string:`attribute`
Return:	string:`attribute` variant:`value`
Description:	Gets the specified attribute value. The attribute can be anything from route_get_attr() in navit/route.c
Example:	org.navit_project. navit.route.get_attr string:”destination_length” returns: string "destination_length" variant int32 338111

4.3.9. Signals

4.3.9.1. add bookmark signal

Setup the callback:

`` dbus-send  –print-reply –session –dest=org.navit_project.navit /org/navit_project/navit org.navit_project.navit.callback_attr_new string:my_signal string:bookmark_map ``
`` object path “/org/navit_project/navit/callback/0”``
`` dbus-send  –print-reply –session –dest=org.navit_project.navit /org/navit_project/navit/default_navit org.navit_project.navit.navit.add_attr string:callback ``
`` variant:objpath:/org/navit_project/navit/callback/0``

Replace “my_signal” with a signal name of your choice.

Now add a bookmark and you should see this in dbus-monitor –session:

`` signal sender=:1.927 -> dest=(null destination) path=/org/navit_project/navit; interface=org.navit_project.navit; member=my_signal``

4.3.10. Undocumented methods

The following code comes from /binding/dbus/binding_dbus.c

{"",        "attr_iter",           "",        "",                                        "o",  "attr_iter",  request_config_attr_iter},
{"",        "attr_iter_destroy",   "o",       "attr_iter",                               "",   "",      request_config_attr_iter_destroy},
{"",        "get_attr",            "s",       "attrname",                                "sv", "attrname,value",request_config_get_attr},
{"",        "get_attr_wi",         "so",      "attrname,attr_iter",                      "sv", "attrname,value",request_config_get_attr},
{"",        "callback_new",    "s",       "signalname",                              "o",  "callback",request_callback_new},
{"",        "callback_attr_new",   "ss",       "signalname,attribute",                   "o",  "callback",request_callback_new},
{"",        "search_list_new",     "o",       "mapset",                                  "o",  "search",request_search_list_new},
{".callback","destroy",            "",        "",                                        "",   "",      request_callback_destroy},
{".graphics","get_data",       "s",       "type",                    "ay",  "data", request_graphics_get_data},
{".graphics","set_attr",           "sv",      "attribute,value",                         "",   "",      request_graphics_set_attr},
{".gui",     "get_attr",           "s",       "attribute",                               "sv",  "attrname,value", request_gui_get_attr},
{".gui",     "command_parameter",  "sa{sa{sv}}","command,parameter",                     "a{sa{sv}}",  "return", request_gui_command},
{".gui",     "command",            "s",       "command",                                 "a{sa{sv}}",  "return", request_gui_command},

{".navit",  "resize",              "ii",      "upperleft,lowerright",                    "",   "",      request_navit_resize},
{".navit",  "attr_iter",           "",        "",                                        "o",  "attr_iter",  request_navit_attr_iter},
{".navit",  "attr_iter_destroy",   "o",       "attr_iter",                               "",   "",      request_navit_attr_iter_destroy},
{".navit",  "get_attr_wi",         "so",      "attribute,attr_iter",                     "sv",  "attrname,value", request_navit_get_attr},
{".navit",  "add_attr",            "sv",      "attribute,value",                         "",   "",      request_navit_add_attr},
{".navit",  "remove_attr",         "sv",      "attribute,value",                         "",   "",      request_navit_remove_attr},
{".navit",  "evaluate",        "s",       "command",                 "s",  "",      request_navit_evaluate},

{".map",    "get_attr",            "s",       "attribute",                               "sv",  "attrname,value", request_map_get_attr},
{".map",    "set_attr",            "sv",      "attribute,value",                         "",   "",      request_map_set_attr},
{".mapset", "attr_iter",           "",        "",                                        "o",  "attr_iter",  request_mapset_attr_iter},
{".mapset", "attr_iter_destroy",   "o",       "attr_iter",                               "",   "",      request_mapset_attr_iter_destroy},
{".mapset", "get_attr",            "s",       "attribute",                               "sv",  "attrname,value", request_mapset_get_attr},
{".mapset", "get_attr_wi",         "so",      "attribute,attr_iter",                     "sv",  "attrname,value", request_mapset_get_attr},
{".navigation","get_attr",         "s",       "attribute",                               "",   "",      request_navigation_get_attr},
{".route",    "set_attr",          "sv",      "attribute,value",                         "",    "",  request_route_set_attr},
{".route",    "add_attr",          "sv",      "attribute,value",                         "",    "",  request_route_add_attr},
{".route",    "remove_attr",       "sv",      "attribute,value",                         "",    "",  request_route_remove_attr},
{".search_list","destroy",         "",        "",                                        "",   "",      request_search_list_destroy},
{".search_list","get_result",      "",        "",                                        "i(iii)a{sa{sv}}",   "id,coord,dict",      request_search_list_get_result},
{".search_list","search",          "svi",     "attribute,value,partial",                 "",   "",      request_search_list_search},
{".search_list","select",          "sii",     "attribute_type,id,mode",                  "",   "",      request_search_list_select},
{".tracking","get_attr",           "s",       "attribute",                               "",   "",      request_tracking_get_attr},

category: navit dbus category: Development