screen.c File Reference

#include <assert.h>
#include <glib.h>
#include <locale.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/extensions/randr.h>
#include <X11/extensions/Xinerama.h>
#include <X11/extensions/Xrandr.h>
#include <X11/Xatom.h>
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xresource.h>
#include "../log.h"
#include "../settings.h"
#include "../utils.h"
#include "x.h"
#include "screen.h"

Include dependency graph for screen.c:

Go to the source code of this file.

Functions
void	randr_init (void)
void	randr_update (void)
void	xinerama_update (void)
void	screen_update_fallback (void)
static void	x_follow_setup_error_handler (void)
static int	x_follow_tear_down_error_handler (void)
static int	FollowXErrorHandler (Display *display, XErrorEvent *e)
static Window	get_focused_window (void)
void	screen_dpi_xft_cache_purge (void)
static double	screen_dpi_get_from_xft (void)
static double	screen_dpi_get_from_monitor (const struct screen_info *scr)
double	screen_dpi_get (const struct screen_info *scr)
void	init_screens (void)
void	free_screen_ar (struct screen_info *scr, int len)
void	alloc_screen_ar (int n)
bool	screen_check_event (XEvent *ev)
bool	have_fullscreen_window (void)
	Find the currently focused window and check if it's in fullscreen mode.
static int	XErrorHandlerFullscreen (Display *display, XErrorEvent *e)
	X11 ErrorHandler to mainly discard BadWindow parameter error.
bool	window_is_fullscreen (Window window)
	Check if window is in fullscreen mode.
static int	get_screen_by_name (const char *name, int defval)
const struct screen_info *	get_active_screen (void)

Variables
struct screen_info *	screens
int	screens_len
bool	dunst_follow_errored = false
static int	randr_major_version = 0
static int	randr_minor_version = 0
double	screen_dpi_xft_cache = -DBL_MAX
	A cache variable to cache the Xft.dpi xrdb values.

Detailed Description

Copyright

Copyright 2013-2014 Sascha Kruse

Copyright 2014-2026 Dunst contributors

License

BSD-3-Clause

Definition in file screen.c.

Function Documentation

alloc_screen_ar()

void alloc_screen_ar

(

int

n

)

Definition at line 124 of file screen.c.

FollowXErrorHandler()

static int FollowXErrorHandler ( Display * display, XErrorEvent * e )

static

Definition at line 454 of file screen.c.

free_screen_ar()

void free_screen_ar	(	struct screen_info *	scr,
		int	len )

Definition at line 113 of file screen.c.

get_active_screen()

const struct screen_info * get_active_screen

(

void

)

Definition at line 338 of file screen.c.

get_focused_window()

static Window get_focused_window ( void )

static

Definition at line 426 of file screen.c.

get_screen_by_name()

static int get_screen_by_name ( const char * name, int defval )

static

Definition at line 323 of file screen.c.

have_fullscreen_window()

bool have_fullscreen_window

(

void

)

Find the currently focused window and check if it's in fullscreen mode.

See also

window_is_fullscreen()

get_focused_window()

Return values

true	if the focused window is in fullscreen mode
false	otherwise

Definition at line 238 of file screen.c.

init_screens()

void init_screens

(

void

)

Definition at line 103 of file screen.c.

randr_init()

void randr_init

(

void

)

Definition at line 132 of file screen.c.

randr_update()

void randr_update

(

void

)

Definition at line 144 of file screen.c.

screen_check_event()

bool screen_check_event

(

XEvent *

ev

)

Definition at line 185 of file screen.c.

screen_dpi_get()

double screen_dpi_get

(

const struct screen_info *

scr

)

Definition at line 84 of file screen.c.

screen_dpi_get_from_monitor()

static double screen_dpi_get_from_monitor ( const struct screen_info * scr )

static

Definition at line 79 of file screen.c.

screen_dpi_get_from_xft()

static double screen_dpi_get_from_xft ( void )

static

Definition at line 64 of file screen.c.

screen_dpi_xft_cache_purge()

void screen_dpi_xft_cache_purge

(

void

)

Definition at line 59 of file screen.c.

screen_update_fallback()

void screen_update_fallback

(

void

)

Definition at line 221 of file screen.c.

window_is_fullscreen()

bool window_is_fullscreen

(

Window

window

)

Check if window is in fullscreen mode.

Parameters

window

the x11 window object

Return values

true	if window is in fullscreen mode
false	otherwise

Definition at line 262 of file screen.c.

x_follow_setup_error_handler()

static void x_follow_setup_error_handler ( void )

static

Definition at line 438 of file screen.c.

x_follow_tear_down_error_handler()

static int x_follow_tear_down_error_handler ( void )

static

Definition at line 446 of file screen.c.

XErrorHandlerFullscreen()

static int XErrorHandlerFullscreen ( Display * display, XErrorEvent * e )

static

X11 ErrorHandler to mainly discard BadWindow parameter error.

Definition at line 246 of file screen.c.

xinerama_update()

void xinerama_update

(

void

)

Definition at line 196 of file screen.c.

Variable Documentation

dunst_follow_errored

bool dunst_follow_errored = false

Definition at line 33 of file screen.c.

randr_major_version

int randr_major_version = 0

static

Definition at line 35 of file screen.c.

randr_minor_version

int randr_minor_version = 0

static

Definition at line 36 of file screen.c.

screen_dpi_xft_cache

double screen_dpi_xft_cache = -DBL_MAX

A cache variable to cache the Xft.dpi xrdb values.

We do not expect to change xrdb often, but there's much overhead to query it once.

Return values

-DBL_MAX	uncached
<=0	Invalid and unusable value
>0	valid

Definition at line 57 of file screen.c.

screens

struct screen_info* screens

Definition at line 30 of file screen.c.

screens_len

int screens_len

Definition at line 31 of file screen.c.