#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <stdbool.h>
#include <xcb/xcb.h>
#include <xcb/xinerama.h>
#include "table.h"
#include "util.h"
#include "xinerama.h"
+#include "layout.h"
/* This TAILQ of i3Screens stores the virtual screens, used for handling overlapping screens
* (xrandr --same-as) */
-struct screens_head virtual_screens = TAILQ_HEAD_INITIALIZER(virtual_screens);
+struct screens_head *virtual_screens;
+
+static bool xinerama_enabled = true;
/*
* Looks in virtual_screens for the i3Screen whose start coordinates are x, y
*
*/
-i3Screen *get_screen_at(int x, int y) {
+i3Screen *get_screen_at(int x, int y, struct screens_head *screenlist) {
i3Screen *screen;
- TAILQ_FOREACH(screen, &virtual_screens, screens)
+ TAILQ_FOREACH(screen, screenlist, screens)
if (screen->rect.x == x && screen->rect.y == y)
return screen;
*/
i3Screen *get_screen_containing(int x, int y) {
i3Screen *screen;
- TAILQ_FOREACH(screen, &virtual_screens, screens)
- if (x > screen->rect.x && x < (screen->rect.x + screen->rect.width) &&
- y > screen->rect.y && y < (screen->rect.y + screen->rect.height))
+ TAILQ_FOREACH(screen, virtual_screens, screens) {
+ printf("comparing x=%d y=%d with x=%d and y=%d width %d height %d\n",
+ x, y, screen->rect.x, screen->rect.y, screen->rect.width, screen->rect.height);
+ if (x >= screen->rect.x && x < (screen->rect.x + screen->rect.width) &&
+ y >= screen->rect.y && y < (screen->rect.y + screen->rect.height))
return screen;
+ }
return NULL;
}
s->rect.width = root_screen->width_in_pixels;
s->rect.height = root_screen->height_in_pixels;
- TAILQ_INSERT_TAIL(&virtual_screens, s, screens);
+ TAILQ_INSERT_TAIL(virtual_screens, s, screens);
+
+ xinerama_enabled = false;
}
/*
- * We have just established a connection to the X server and need the initial Xinerama
- * information to setup workspaces for each screen.
+ * Gets the Xinerama screens and converts them to virtual i3Screens (only one screen for two
+ * Xinerama screen which are configured in clone mode) in the given screenlist
*
*/
-void initialize_xinerama(xcb_connection_t *conn) {
+static void query_screens(xcb_connection_t *connection, struct screens_head *screenlist) {
xcb_xinerama_query_screens_reply_t *reply;
xcb_xinerama_screen_info_t *screen_info;
- if (!xcb_get_extension_data(conn, &xcb_xinerama_id)->present) {
- printf("Xinerama extension not found, disabling.\n");
- disable_xinerama(conn);
- return;
- }
-
- if (!xcb_xinerama_is_active_reply(conn, xcb_xinerama_is_active(conn), NULL)->state) {
- printf("Xinerama is not active (in your X-Server), disabling.\n");
- disable_xinerama(conn);
- return;
- }
-
- reply = xcb_xinerama_query_screens_reply(conn, xcb_xinerama_query_screens_unchecked(conn), NULL);
+ reply = xcb_xinerama_query_screens_reply(connection, xcb_xinerama_query_screens_unchecked(connection), NULL);
if (!reply) {
- printf("Couldn’t get active Xinerama screens\n");
+ printf("Couldn't get Xinerama screens\n");
return;
}
screen_info = xcb_xinerama_query_screens_screen_info(reply);
- num_screens = xcb_xinerama_query_screens_screen_info_length(reply);
+ int screens = xcb_xinerama_query_screens_screen_info_length(reply);
+ num_screens = 0;
- /* Just go through each workspace and associate as many screens as we can. */
- for (int screen = 0; screen < num_screens; screen++) {
- i3Screen *s = get_screen_at(screen_info[screen].x_org, screen_info[screen].y_org);
+ for (int screen = 0; screen < screens; screen++) {
+ i3Screen *s = get_screen_at(screen_info[screen].x_org, screen_info[screen].y_org, screenlist);
if (s!= NULL) {
/* This screen already exists. We use the littlest screen so that the user
can always see the complete workspace */
s->rect.y = screen_info[screen].y_org;
s->rect.width = screen_info[screen].width;
s->rect.height = screen_info[screen].height;
- TAILQ_INSERT_TAIL(&virtual_screens, s, screens);
+ /* We always treat the screen at 0x0 as the primary screen */
+ if (s->rect.x == 0 && s->rect.y == 0)
+ TAILQ_INSERT_HEAD(screenlist, s, screens);
+ else TAILQ_INSERT_TAIL(screenlist, s, screens);
+ num_screens++;
}
printf("found Xinerama screen: %d x %d at %d x %d\n",
screen_info[screen].x_org, screen_info[screen].y_org);
}
+ free(reply);
+}
+
+/*
+ * We have just established a connection to the X server and need the initial Xinerama
+ * information to setup workspaces for each screen.
+ *
+ */
+void initialize_xinerama(xcb_connection_t *connection) {
+ virtual_screens = scalloc(sizeof(struct screens_head));
+ TAILQ_INIT(virtual_screens);
+
+ if (!xcb_get_extension_data(connection, &xcb_xinerama_id)->present) {
+ printf("Xinerama extension not found, disabling.\n");
+ disable_xinerama(connection);
+ return;
+ }
+
+ if (!xcb_xinerama_is_active_reply(connection, xcb_xinerama_is_active(connection), NULL)->state) {
+ printf("Xinerama is not active (in your X-Server), disabling.\n");
+ disable_xinerama(connection);
+ return;
+ }
+
+ query_screens(connection, virtual_screens);
+
i3Screen *s;
num_screens = 0;
- TAILQ_FOREACH(s, &virtual_screens, screens) {
+ /* Just go through each workspace and associate as many screens as we can. */
+ TAILQ_FOREACH(s, virtual_screens, screens) {
s->num = num_screens;
s->current_workspace = num_screens;
workspaces[num_screens].screen = s;
printf("that is virtual screen at %d x %d with %d x %d\n",
s->rect.x, s->rect.y, s->rect.width, s->rect.height);
}
+}
- free(reply);
+/*
+ * This is called when the rootwindow receives a configure_notify event and therefore the
+ * number/position of the Xinerama screens could have changed.
+ *
+ */
+void xinerama_requery_screens(xcb_connection_t *connection) {
+ /* POSSIBLE PROBLEM: Is the order of the Xinerama screens always constant? That is, can
+ it change when I move the --right-of video projector to --left-of? */
+
+ if (!xinerama_enabled) {
+ printf("Xinerama is disabled\n");
+ return;
+ }
+
+ /* We use a separate copy to diff with the previous set of screens */
+ struct screens_head *new_screens = scalloc(sizeof(struct screens_head));
+ TAILQ_INIT(new_screens);
+
+ query_screens(connection, new_screens);
+
+ i3Screen *first = TAILQ_FIRST(new_screens),
+ *screen;
+ int screen_count = 0;
+ TAILQ_FOREACH(screen, new_screens, screens) {
+ screen->num = screen_count;
+ screen->current_workspace = -1;
+ for (int c = 0; c < 10; c++)
+ if ((workspaces[c].screen != NULL) &&
+ (workspaces[c].screen->num == screen_count)) {
+ printf("Found a matching screen\n");
+ /* Try to use the same workspace, if it’s available */
+ if (workspaces[c].screen->current_workspace)
+ screen->current_workspace = workspaces[c].screen->current_workspace;
+
+ if (screen->current_workspace == -1)
+ screen->current_workspace = c;
+
+ /* Update the dimensions */
+ memcpy(&(workspaces[c].rect), &(screen->rect), sizeof(Rect));
+ workspaces[c].screen = screen;
+ }
+ if (screen->current_workspace == -1) {
+ /* Create a new workspace for this screen, it’s new */
+ for (int c = 0; c < 10; c++)
+ if (workspaces[c].screen == NULL) {
+ printf("fix: initializing new workspace, setting num to %d\n", c);
+ workspaces[c].screen = screen;
+ screen->current_workspace = c;
+ /* Copy the dimensions from the virtual screen */
+ memcpy(&(workspaces[c].rect), &(screen->rect), sizeof(Rect));
+ break;
+ }
+ }
+ screen_count++;
+ }
+
+ /* Check for workspaces which are out of bounds */
+ for (int c = 0; c < 10; c++)
+ if ((workspaces[c].screen != NULL) &&
+ (workspaces[c].screen->num >= num_screens)) {
+ printf("Workspace %d's screen out of bounds, assigning to first screen\n", c+1);
+ workspaces[c].screen = first;
+ memcpy(&(workspaces[c].rect), &(first->rect), sizeof(Rect));
+ }
+
+ /* Free the old list */
+ TAILQ_FOREACH(screen, virtual_screens, screens) {
+ TAILQ_REMOVE(virtual_screens, screen, screens);
+ free(screen);
+ }
+ free(virtual_screens);
+
+ virtual_screens = new_screens;
+
+ printf("Current workspace is now: %d\n", first->current_workspace);
+
+ render_layout(connection);
}
projects / i3 / i3 / commitdiff