Provide information in order to make Elementary determine the run time location of the software in question, so other data files such as images, sound files, executable utilities, libraries, modules and locale files can be found.

Functions
void	elm_app_info_set (void mainfunc, const char dom, const char *checkfile)
void	elm_app_name_set (const char *name)
void	elm_app_desktop_entry_set (const char *path)
void	elm_app_compile_bin_dir_set (const char *dir)
void	elm_app_compile_lib_dir_set (const char *dir)
void	elm_app_compile_data_dir_set (const char *dir)
void	elm_app_compile_locale_set (const char *dir)
const char *	elm_app_name_get (void)
const char *	elm_app_desktop_entry_get (void)
const char *	elm_app_prefix_dir_get (void)
const char *	elm_app_bin_dir_get (void)
const char *	elm_app_lib_dir_get (void)
const char *	elm_app_data_dir_get (void)
const char *	elm_app_locale_dir_get (void)
void	elm_app_base_scale_set (double base_scale)
double	elm_app_base_scale_get (void)

Function Documentation

double elm_app_base_scale_get ( void )

Get the base scale of the application.

Returns:: The base scale which the application sets.

Since (EFL) :: 1.12

Since :: 2.3

void elm_app_base_scale_set ( double base_scale )

Set the base scale of the application.

Parameters:

base_scale The scale that the application is made on the basis of.

Note:: The scale is used for the application to be scaled. If the application isn't made on the basis of scale 1.0, the application layout will be scaled inappositely. So if the application set the base scale, it is applied when the application is scaled.; You should call this function before using ELM_SCALE_SIZE macro.

Since (EFL) :: 1.12

Since :: 2.3

const char* elm_app_bin_dir_get ( void )

Get the application's run time binaries prefix directory, as set by elm_app_info_set() and the way (environment) the application was run from.

Returns:: The binaries directory prefix the application is actually using.

Since :: 2.3

void elm_app_compile_bin_dir_set ( const char * dir )

Provide information on the fallback application's binaries directory, in scenarios where they get overridden by elm_app_info_set().

Parameters:

dir	The path to the default binaries directory (compile time one)

Note:: Elementary will as well use this path to determine actual names of binaries' directory paths, maybe changing it to be something/local/bin instead of something/bin, only, for example.

Warning:: You should call this function before elm_app_info_set().

Since :: 2.3

Examples:: general_funcs_example.c.

void elm_app_compile_data_dir_set ( const char * dir )

Provide information on the fallback application's data directory, on scenarios where they get overridden by elm_app_info_set().

Parameters:

dir	The path to the default data directory (compile time one)

Note:: Elementary will as well use this path to determine actual names of data directory paths, maybe changing it to be something/local/share instead of something/share, only, for example.

Warning:: You should call this function before elm_app_info_set().

Since :: 2.3

Examples:: general_funcs_example.c, theme_example_01.c, and theme_example_02.c.

void elm_app_compile_lib_dir_set ( const char * dir )

Provide information on the fallback application's libraries directory, on scenarios where they get overridden by elm_app_info_set().

Parameters:

dir	The path to the default libraries directory (compile time one)

Note:: Elementary will as well use this path to determine actual names of libraries' directory paths, maybe changing it to be something/lib32 or something/lib64 instead of something/lib, only, for example.

Warning:: You should call this function before elm_app_info_set().

Since :: 2.3

Examples:: general_funcs_example.c.

void elm_app_compile_locale_set ( const char * dir )

Provide information on the fallback application's locale directory, on scenarios where they get overridden by elm_app_info_set().

Parameters:

dir	The path to the default locale directory (compile time one)

Warning:: You should call this function before elm_app_info_set().

Since :: 2.3

const char* elm_app_data_dir_get ( void )

Get the application's run time data prefix directory, as set by elm_app_info_set() and the way (environment) the application was run from.

Returns:: The data directory prefix the application is actually using.

Since :: 2.3

Examples:: bg_example_02.c, bg_example_03.c, general_funcs_example.c, gengrid_example.c, image_example_01.c, index_example_02.c, layout_example_01.c, layout_example_03.c, map_example_02.c, photocam_example_01.c, popup_example_02.c, popup_example_03.c, progressbar_example.c, slideshow_example.c, theme_example_01.c, theme_example_02.c, thumb_example_01.c, transit_example_03.c, transit_example_04.c, and win_example.c.

const char* elm_app_desktop_entry_get ( void )

Get the path to the '.desktop' file, as set by elm_app_desktop_entry_set().

Returns:: The '.desktop' file path.

Since (EFL) :: 1.8

void elm_app_desktop_entry_set ( const char * path )

Set the path to the '.desktop' file to be associated with the elm application.

Parameters:

path	The path to the '.desktop' file

Warning:: Since this path is very environment dependent, this will hold whatever value is passed to it.

Since (EFL) :: 1.8

void elm_app_info_set	(	void *	mainfunc,
		const char *	dom,
		const char *	checkfile
	)

Re-locate the application somewhere else after compilation, if the developer wishes for easier distribution of pre-compiled binaries.

Parameters:

mainfunc	This is your application's main function name, whose binary's location is to be found. Providing `NULL` will make Elementary not to use it
dom	This will be used as the application's "domain", in the form of a prefix to any environment variables that may override prefix detection and the directory name, inside the standard share or data directories, where the software's data files will be looked for.
checkfile	This is an (optional) magic file's path to check for existence (and it must be located in the data directory, under the share directory provided above). Its presence will help determine the prefix found was correct. Pass `NULL` if the check is not to be done.

The prefix system is designed to locate where the given software is installed (under a common path prefix) at run time and then report specific locations of this prefix and common directories inside this prefix like the binary, library, data and locale directories, through the elm_app_*_get() family of functions.

Call elm_app_info_set() early on before you change working directory or anything about argv[0], so it gets accurate information.

It will then try and trace back which file mainfunc comes from, if provided, to determine the application's prefix directory.

The dom parameter provides a string prefix to prepend before environment variables, allowing a fallback to specific environment variables to locate the software. You would most probably provide a lowercase string there, because it will also serve as directory domain, explained next. For environment variables purposes, this string is made uppercase. For example if "myapp" is provided as the prefix, then the program would expect "MYAPP_PREFIX" as a master environment variable to specify the exact install prefix for the software, or more specific environment variables like "MYAPP_BIN_DIR", "MYAPP_LIB_DIR", "MYAPP_DATA_DIR" and "MYAPP_LOCALE_DIR", which could be set by the user or scripts before launching. If not provided (NULL), environment variables will not be used to override compiled-in defaults or auto detections.

The dom string also provides a subdirectory inside the system shared data directory for data files. For example, if the system directory is /usr/local/share, then this directory name is appended, creating /usr/local/share/myapp, if it was "myapp". It is expected that the application installs data files in this directory.

The checkfile is a file name or path of something inside the share or data directory to be used to test that the prefix detection worked. For example, your app will install a wallpaper image as /usr/local/share/myapp/images/wallpaper.jpg and so to check that this worked, provide "images/wallpaper.jpg" as the checkfile string.