The Navit display is highly customisable and consists of the following components
- Graphics driver (appropriate engine for your system, to draw everything)
- GUI (enables user interaction and map display)
- OSD (shows widgets on map screen)
Different technologies can be used, to let Navit draw it's visual components. Not all might be available at your specific system
The current list of available graphics drivers:
- android, for the Android port
- cocoa, for the iPhone port
- gtk_drawing_area, usually most appropriate on Linux desktop systems
- sdl, render inside an X window, or direct to the Linux framebuffer, with min dependencies on external libraries.
- win32 - useable with gtk or internal GUIs for Windows systems only.
Experimental/less maintained drivers:
- qt_qpainter, render inside X window or on top of Qt Palmtop Environment.
- opengl, rendering via OpenGL
- gtk_gl_ext, rendering via OpenGL using GTK+ OpenGL extension
- gd, rendering using the GD Graphics Library
They can be activated and configured as following:
As mentioned, it's usually best to leave this as whatever the default is within your navit.xml, and only mess around with it if you know what you are doing, or have been told to by one of the developers.
Graphical User Interface
You can now choose which type of GUI you would like to use with Navit. Not all GUIs work with all Graphics drivers
Generic GUI Options
There are some options available for the gui tag which are used by all the GUI types. These include:
- fullscreen - Enables Navit to start in fullscreen mode.
- pitch - The pitch value to pitch the map to when selecting 3D mode from the menus.
- dimensions - w="1024" h="600"
The following example uses the internal GUI, and starts Navit up in fullscreen mode, and will pitch the map to 35 degrees when 3D mode is selected from the menu. Note that to start Navit in 3D mode by default, change the pitch value in the navit tag:
<gui type="internal" enabled="yes" fullscreen="1" pitch="35">
The first GUI is embedded in Navit core and is primarily aimed at touchscreen devices, or those devices with small screens (such as netbooks). However, this GUI also works very well on desktops and laptops.
<gui type="internal" enabled="yes">
A number of options specific to the internal GUI are available. These include:
- font_size - Base text size to use within the internal menu.
- icon_xs - The size that extra-small style icons should be scaled to (e.g. country flag on town search).
- icon_s - The size that small style icons should be scaled to (e.g. icons of internal GUI toolbar).
- icon_l - The size that large style icons should be scaled to (e.g. icons of internal GUI menu).
- menu_on_map_click - Toggles the ability to bring up the menu screen when clicking on the map. See the internal GUI page for more information.
An example gui tag using the previous options is shown below:
<gui type="internal" enabled="yes" font_size="250" icon_xs="48" icon_s="48" icon_l="64">
The second GUI is called gtk, and is most useful for those users who wish to use a traditional windowed GUI. This is one useful to desktop use.
<gui type="gtk" enabled="yes" ... />
A number of options specific to the gtk GUI are available. These include:
- menubar - enable/disable the menubar
- toolbar - enable/disable the toolbar
- statusbar - enable/disable the statusbar
<gui type="gtk" enabled="yes" menubar="1" toolbar="1" statusbar="1"/>