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/*
* vim:ts=4:sw=4:expandtab
*
* © 2010 Michael Stapelberg
*
* See LICENSE for licensing information
*
*/
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <xcb/xcb.h>
#include <xcb/xinerama.h>
#include "i3lock.h"
#include "xcb.h"
#include "xinerama.h"
/* Number of Xinerama screens which are currently present. */
int xr_screens = 0;
/* The resolutions of the currently present Xinerama screens. */
Rect *xr_resolutions;
static bool xinerama_active;
extern bool debug_mode;
void xinerama_init(void) {
if (!xcb_get_extension_data(conn, &xcb_xinerama_id)->present) {
DEBUG("Xinerama extension not found, disabling.\n");
return;
}
xcb_xinerama_is_active_cookie_t cookie;
xcb_xinerama_is_active_reply_t *reply;
cookie = xcb_xinerama_is_active(conn);
reply = xcb_xinerama_is_active_reply(conn, cookie, NULL);
if (!reply)
return;
if (!reply->state) {
free(reply);
return;
}
xinerama_active = true;
free(reply);
}
void xinerama_query_screens(void) {
if (!xinerama_active)
return;
xcb_xinerama_query_screens_cookie_t cookie;
xcb_xinerama_query_screens_reply_t *reply;
xcb_xinerama_screen_info_t *screen_info;
cookie = xcb_xinerama_query_screens_unchecked(conn);
reply = xcb_xinerama_query_screens_reply(conn, cookie, NULL);
if (!reply) {
if (debug_mode)
fprintf(stderr, "Couldn't get Xinerama screens\n");
return;
}
screen_info = xcb_xinerama_query_screens_screen_info(reply);
int screens = xcb_xinerama_query_screens_screen_info_length(reply);
Rect *resolutions = malloc(screens * sizeof(Rect));
/* No memory? Just keep on using the old information. */
if (!resolutions) {
free(reply);
return;
}
xr_resolutions = resolutions;
xr_screens = screens;
for (int screen = 0; screen < xr_screens; screen++) {
xr_resolutions[screen].x = screen_info[screen].x_org;
xr_resolutions[screen].y = screen_info[screen].y_org;
xr_resolutions[screen].width = screen_info[screen].width;
xr_resolutions[screen].height = screen_info[screen].height;
DEBUG("found Xinerama screen: %d x %d at %d x %d\n",
screen_info[screen].width, screen_info[screen].height,
screen_info[screen].x_org, screen_info[screen].y_org);
}
free(reply);
}
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