wlmeyes.c File Reference

#include <cairo.h>
#include <libbase/libbase.h>
#include <math.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <wayland-server-core.h>
#include <wayland-util.h>
#include <xkbcommon/xkbcommon-keysyms.h>
#include <xkbcommon/xkbcommon.h>
#include "wlclient/xdg_toplevel.h"
#include "wlclient/wlclient.h"
#include "wlclient/icon.h"
#include "wlclient/dblbuf.h"

Include dependency graph for wlmeyes.c:

Functions
static void	_handle_key (struct wl_listener *listener_ptr, void *data_ptr)
static double	sqr (double x)
void	_draw_around (cairo_t *cairo_ptr, double x, double y, int width, int height)
void	_draw_pupil (cairo_t *cairo_ptr, double pointer_x, double pointer_y, double px, double py, double w, double h, int width, int height)
static bool	_callback (bs_gfxbuf_t *gfxbuf_ptr, void *ud_ptr)
static void	_position_callback (double x, double y, void *ud_ptr)
static bool	_icon_callback (bs_gfxbuf_t *gfxbuf_ptr, void *ud_ptr)
static void	_icon_position_callback (double x, double y, void *ud_ptr)
static void	_handle_toplevel_configure (void *ud_ptr, uint32_t width, uint32_t height)
static void	_handle_icon_configure (void *ud_ptr, uint32_t width, uint32_t height)
int	main (int argc, const char **argv)

Variables
wlmcl_client_t *	wlclient_ptr
static wlmcl_dblbuf_t *	toplevel_dblbuf_ptr
static wlmcl_dblbuf_t *	icon_dblbuf_ptr
static struct wl_listener	_key_listener
double	pointer_x
double	pointer_y
double	icon_pointer_x
double	icon_pointer_y
uint32_t	toplevel_width
uint32_t	toplevel_height
static const bs_arg_t	_wlmeyes_args []

Detailed Description

Copyright

Copyright (c) 2026 Philipp Kaeser (kaese.nosp@m.r@gu.nosp@m.bbe.c.nosp@m.h) Copyright 2025 Google LLC

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Function Documentation

_callback()

static bool _callback ( bs_gfxbuf_t *  gfxbuf_ptr, void *  ud_ptr  )

static

Draws something into the buffer.

_draw_around()

void _draw_around	(	cairo_t *	cairo_ptr,
		double	x,
		double	y,
		int	width,
		int	height
	)

Draws the white + border of the eye.

_draw_pupil()

void _draw_pupil	(	cairo_t *	cairo_ptr,
		double	pointer_x,
		double	pointer_y,
		double	px,
		double	py,
		double	w,
		double	h,
		int	width,
		int	height
	)

Draws the eyes' pupil, in relative coordinates.

_handle_icon_configure()

static void _handle_icon_configure ( void *  ud_ptr, uint32_t  width, uint32_t  height  )

static

Handles configure events for the icon.

_handle_key()

static void _handle_key ( struct wl_listener *  listener_ptr, void *  data_ptr  )

static

Handles key events.

_handle_toplevel_configure()

static void _handle_toplevel_configure ( void *  ud_ptr, uint32_t  width, uint32_t  height  )

static

Handles configure events for the toplevel.

_icon_callback()

static bool _icon_callback ( bs_gfxbuf_t *  gfxbuf_ptr, void *  ud_ptr  )

static

Called when the icon is ready to refresh.

_icon_position_callback()

static void _icon_position_callback ( double  x, double  y, void *  ud_ptr  )

static

Updates pointer position for the icon.

_position_callback()

static void _position_callback ( double  x, double  y, void *  ud_ptr  )

static

Updates pointer position.

main()

int main	(	int	argc,
		const char **	argv
	)

Main program.

sqr()

static double sqr ( double  x )

inlinestatic

Returns

x * x.

Variable Documentation

_key_listener

struct wl_listener _key_listener

static

Listener for key events.

_wlmeyes_args

const bs_arg_t _wlmeyes_args[]

static

Initial value:

= {
    BS_ARG_UINT32(
        "width",
        "Desired width of the XDG toplevel window, in pixels.",
        512,
        1,
        INT32_MAX,
        &toplevel_width),
    BS_ARG_UINT32(
        "height",
        "Desired height of the XDG toplevel window, in pixels.",
        384,
        1,
        INT32_MAX,
        &toplevel_height),
    BS_ARG_SENTINEL(),
}

Commandline arguments.

icon_dblbuf_ptr

wlmcl_dblbuf_t* icon_dblbuf_ptr

static

Double buffer for icon.

icon_pointer_x

double icon_pointer_x

Most recent X position of the pointer relative to the ivon.

icon_pointer_y

double icon_pointer_y

Most recent Y position of the pointer relative to the ivon.

pointer_x

double pointer_x

Most recent X position of the pointer.

pointer_y

double pointer_y

Most recent Y position of the pointer.

toplevel_dblbuf_ptr

wlmcl_dblbuf_t* toplevel_dblbuf_ptr

static

Double buffer for toplevel.

toplevel_height

uint32_t toplevel_height

Desired height of the toplevel, in pixels.

toplevel_width

uint32_t toplevel_width

Desired width of the toplevel, in pixels.

wlclient_ptr

wlmcl_client_t* wlclient_ptr

State of the client.