114 lines
4.0 KiB
C
114 lines
4.0 KiB
C
/*
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* vim:ts=8:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* (c) 2009 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <xcb/xcb.h>
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#include <xcb/xinerama.h>
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#include "queue.h"
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#include "i3.h"
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#include "data.h"
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#include "table.h"
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#include "util.h"
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#include "xinerama.h"
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/* This TAILQ of Rects stores the virtual screens, used for handling overlapping screens
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* (xrandr --same-as) */
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struct screens_head virtual_screens;
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i3Screen *get_screen_at(int x, int y) {
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i3Screen *screen;
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TAILQ_FOREACH(screen, &virtual_screens, screens)
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if (screen->rect.x == x && screen->rect.y == y)
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return screen;
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return NULL;
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}
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i3Screen *get_screen_containing(int x, int y) {
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i3Screen *screen;
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TAILQ_FOREACH(screen, &virtual_screens, screens)
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if (x > screen->rect.x && x < (screen->rect.x + screen->rect.width) &&
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y > screen->rect.y && y < (screen->rect.y + screen->rect.height))
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return screen;
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return NULL;
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}
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/*
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* We have just established a connection to the X server and need the initial Xinerama
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* information to setup workspaces for each screen.
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*
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*/
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void initialize_xinerama(xcb_connection_t *conn) {
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xcb_xinerama_query_screens_reply_t *reply;
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xcb_xinerama_screen_info_t *screen_info;
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int screen;
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if (!xcb_get_extension_data(conn, &xcb_xinerama_id)->present) {
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printf("Xinerama extension not found, disabling.\n");
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return;
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}
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if (!xcb_xinerama_is_active_reply(conn, xcb_xinerama_is_active(conn), NULL)->state) {
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printf("Xinerama is not active (in your X-Server), disabling.\n");
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return;
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}
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reply = xcb_xinerama_query_screens_reply(conn, xcb_xinerama_query_screens_unchecked(conn), NULL);
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if (!reply) {
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printf("Couldn’t get active Xinerama screens\n");
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return;
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}
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screen_info = xcb_xinerama_query_screens_screen_info(reply);
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num_screens = xcb_xinerama_query_screens_screen_info_length(reply);
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TAILQ_INIT(&virtual_screens);
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/* Just go through each workspace and associate as many screens as we can. */
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for (screen = 0; screen < num_screens; screen++) {
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i3Screen *s = get_screen_at(screen_info[screen].x_org, screen_info[screen].y_org);
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if (s!= NULL) {
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/* This screen already exists. We use the littlest screen so that the user
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can always see the complete workspace */
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s->rect.width = min(s->rect.width, screen_info[screen].width);
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s->rect.height = min(s->rect.height, screen_info[screen].height);
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} else {
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s = calloc(sizeof(Screen), 1);
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s->rect.x = screen_info[screen].x_org;
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s->rect.y = screen_info[screen].y_org;
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s->rect.width = screen_info[screen].width;
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s->rect.height = screen_info[screen].height;
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TAILQ_INSERT_TAIL(&virtual_screens, s, screens);
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}
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printf("found Xinerama screen: %d x %d at %d x %d\n",
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screen_info[screen].width, screen_info[screen].height,
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screen_info[screen].x_org, screen_info[screen].y_org);
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}
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i3Screen *s;
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num_screens = 0;
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TAILQ_FOREACH(s, &virtual_screens, screens) {
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s->num = num_screens;
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s->current_workspace = num_screens;
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workspaces[num_screens].screen = s;
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memcpy(&(workspaces[num_screens++].rect), &(s->rect), sizeof(Rect));
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printf("that is virtual screen at %d x %d with %d x %d\n",
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s->rect.x, s->rect.y, s->rect.width, s->rect.height);
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}
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free(screen_info);
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}
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