gri3-wm/i3bar/include/child.h

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/*
* vim:ts=4:sw=4:expandtab
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*
* i3bar - an xcb-based status- and ws-bar for i3
* © 2010-2012 Axel Wagner and contributors (see also: LICENSE)
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*
* child.c: Getting Input for the statusline
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*
*/
#pragma once
#include <stdbool.h>
#define STDIN_CHUNK_SIZE 1024
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typedef struct {
pid_t pid;
/**
* The version number is an uint32_t to avoid machines with different sizes of
* 'int' to allow different values here. Its highly unlikely we ever exceed
* even an int8_t, but still
*/
uint32_t version;
bool stopped;
/**
* The signal requested by the client to inform it of the hidden state of i3bar
*/
int stop_signal;
/**
* The signal requested by the client to inform it of theun hidden state of i3bar
*/
int cont_signal;
/**
* Enable click events
*/
bool click_events;
bool click_events_init;
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} i3bar_child;
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/*
* Start a child-process with the specified command and reroute stdin.
* We actually start a $SHELL to execute the command so we don't have to care
* about arguments and such
*
*/
void start_child(char *command);
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/*
* kill()s the child-process (if any). Called when exit()ing.
*
*/
void kill_child_at_exit(void);
/*
* kill()s the child-process (if any) and closes and
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* free()s the stdin- and sigchild-watchers
*
*/
void kill_child(void);
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/*
* Sends a SIGSTOP to the child-process (if existent)
*
*/
void stop_child(void);
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/*
* Sends a SIGCONT to the child-process (if existent)
*
*/
void cont_child(void);
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/*
* Generates a click event, if enabled.
*
*/
void send_block_clicked(int button, const char *name, const char *instance, int x, int y);