125 lines
3.2 KiB
C
125 lines
3.2 KiB
C
/*
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* vim:ts=4:sw=4:expandtab
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*/
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#ifndef _LIBI3_H
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#define _LIBI3_H
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#include <stdarg.h>
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#include <xcb/xcb.h>
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#include <xcb/xproto.h>
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/**
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* Try to get the socket path from X11 and return NULL if it doesn’t work.
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*
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* The memory for the socket path is dynamically allocated and has to be
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* free()d by the caller.
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*
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*/
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char *socket_path_from_x11();
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/**
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* Safe-wrapper around malloc which exits if malloc returns NULL (meaning that
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* there is no more memory available)
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*
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*/
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void *smalloc(size_t size);
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/**
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* Safe-wrapper around calloc which exits if malloc returns NULL (meaning that
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* there is no more memory available)
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*
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*/
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void *scalloc(size_t size);
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/**
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* Safe-wrapper around realloc which exits if realloc returns NULL (meaning
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* that there is no more memory available).
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*
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*/
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void *srealloc(void *ptr, size_t size);
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/**
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* Safe-wrapper around strdup which exits if malloc returns NULL (meaning that
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* there is no more memory available)
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*
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*/
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char *sstrdup(const char *str);
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/**
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* Safe-wrapper around asprintf which exits if it returns -1 (meaning that
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* there is no more memory available)
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*
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*/
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int sasprintf(char **strp, const char *fmt, ...);
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/**
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* Connects to the i3 IPC socket and returns the file descriptor for the
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* socket. die()s if anything goes wrong.
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*
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*/
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int ipc_connect(const char *socket_path);
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/**
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* Formats a message (payload) of the given size and type and sends it to i3 via
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* the given socket file descriptor.
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*
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* Returns -1 when write() fails, errno will remain.
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* Returns 0 on success.
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*
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*/
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int ipc_send_message(int sockfd, uint32_t message_size,
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uint32_t message_type, const uint8_t *payload);
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/**
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* Reads a message from the given socket file descriptor and stores its length
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* (reply_length) as well as a pointer to its contents (reply).
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*
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* Returns -1 when read() fails, errno will remain.
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* Returns -2 when the IPC protocol is violated (invalid magic, unexpected
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* message type, EOF instead of a message). Additionally, the error will be
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* printed to stderr.
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* Returns 0 on success.
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*
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*/
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int ipc_recv_message(int sockfd, uint32_t message_type,
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uint32_t *reply_length, uint8_t **reply);
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/**
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* Generates a configure_notify event and sends it to the given window
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* Applications need this to think they’ve configured themselves correctly.
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* The truth is, however, that we will manage them.
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*
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*/
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void fake_configure_notify(xcb_connection_t *conn, xcb_rectangle_t r, xcb_window_t window, int border_width);
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/**
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* Returns the colorpixel to use for the given hex color (think of HTML). Only
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* works for true-color (vast majority of cases) at the moment, avoiding a
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* roundtrip to X11.
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*
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* The hex_color has to start with #, for example #FF00FF.
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*
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* NOTE that get_colorpixel() does _NOT_ check the given color code for validity.
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* This has to be done by the caller.
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*
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* NOTE that this function may in the future rely on a global xcb_connection_t
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* variable called 'conn' to be present.
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*
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*/
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uint32_t get_colorpixel(const char *hex) __attribute__((const));
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#if defined(__APPLE__)
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/*
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* Taken from FreeBSD
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* Returns a pointer to a new string which is a duplicate of the
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* string, but only copies at most n characters.
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*
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*/
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char *strndup(const char *str, size_t n);
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#endif
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#endif
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