8f9d90a84b
All the shell protocol details, Xwayland glue and popups (and their grab) are now handled in libweston-desktop. Fullscreen methods (for wl_shell) are removed for now. Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net> Reviewed-by: Jonas Ådahl <jadahl@gmail.com> Acked-by: Giulio Camuffo <giulio.camuffo@kdab.com> Differential Revision: https://phabricator.freedesktop.org/D1209
108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/*
|
|
* Copyright © 2015 Samsung Electronics Co., Ltd
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#ifndef WESTON_HELPERS_H
|
|
#define WESTON_HELPERS_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @file
|
|
* Simple misc helper macros.
|
|
*/
|
|
|
|
/**
|
|
* Compile-time computation of number of items in a hardcoded array.
|
|
*
|
|
* @param a the array being measured.
|
|
* @return the number of items hardcoded into the array.
|
|
*/
|
|
#ifndef ARRAY_LENGTH
|
|
#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
|
|
#endif
|
|
|
|
/**
|
|
* Returns the smaller of two values.
|
|
*
|
|
* @param x the first item to compare.
|
|
* @param y the second item to compare.
|
|
* @return the value that evaluates to lesser than the other.
|
|
*/
|
|
#ifndef MIN
|
|
#define MIN(x,y) (((x) < (y)) ? (x) : (y))
|
|
#endif
|
|
|
|
/**
|
|
* Returns the bigger of two values.
|
|
*
|
|
* @param x the first item to compare.
|
|
* @param y the second item to compare.
|
|
* @return the value that evaluates to more than the other.
|
|
*/
|
|
#ifndef MAX
|
|
#define MAX(x,y) (((x) > (y)) ? (x) : (y))
|
|
#endif
|
|
|
|
/**
|
|
* Returns a pointer the the containing struct of a given member item.
|
|
*
|
|
* To demonstrate, the following example retrieves a pointer to
|
|
* `example_container` given only its `destroy_listener` member:
|
|
*
|
|
* @code
|
|
* struct example_container {
|
|
* struct wl_listener destroy_listener;
|
|
* // other members...
|
|
* };
|
|
*
|
|
* void example_container_destroy(struct wl_listener *listener, void *data)
|
|
* {
|
|
* struct example_container *ctr;
|
|
*
|
|
* ctr = wl_container_of(listener, ctr, destroy_listener);
|
|
* // destroy ctr...
|
|
* }
|
|
* @endcode
|
|
*
|
|
* @param ptr A valid pointer to the contained item.
|
|
*
|
|
* @param type A pointer to the type of content that the list item
|
|
* stores. Type does not need be a valid pointer; a null or
|
|
* an uninitialised pointer will suffice.
|
|
*
|
|
* @param member The named location of ptr within the sample type.
|
|
*
|
|
* @return The container for the specified pointer.
|
|
*/
|
|
#ifndef container_of
|
|
#define container_of(ptr, type, member) ({ \
|
|
const __typeof__( ((type *)0)->member ) *__mptr = (ptr); \
|
|
(type *)( (char *)__mptr - offsetof(type,member) );})
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* WESTON_HELPERS_H */
|