#include <string.h>
#include <stdbool.h>
#include <assert.h>
+#include <time.h>
#include <xcb/xcb.h>
#include <xcb/xinerama.h>
#include "layout.h"
#include "xcb.h"
#include "config.h"
+#include "workspace.h"
/* This TAILQ of i3Screens stores the virtual screens, used for handling overlapping screens
* (xrandr --same-as) */
static bool xinerama_enabled = true;
+/*
+ * Returns true if both screen objects describe the same screen (checks their
+ * size and position).
+ *
+ */
+bool screens_are_equal(i3Screen *screen1, i3Screen *screen2) {
+ /* If one of both objects (or both) are NULL, we cannot compare them */
+ if (screen1 == NULL || screen2 == NULL)
+ return false;
+
+ /* If the pointers are equal, take the short-circuit */
+ if (screen1 == screen2)
+ return true;
+
+ /* Compare their size - other properties are not relevant to determine
+ * if a screen is equal to another one */
+ return (memcmp(&(screen1->rect), &(screen2->rect), sizeof(Rect)) == 0);
+}
+
/*
* Looks in virtual_screens for the i3Screen whose start coordinates are x, y
*
return candidate;
}
+static void initialize_screen(xcb_connection_t *conn, i3Screen *screen, Workspace *workspace) {
+ i3Font *font = load_font(conn, config.font);
+
+ workspace->screen = screen;
+ screen->current_workspace = workspace->num;
+
+ /* Create a bar for each screen */
+ Rect bar_rect = {screen->rect.x,
+ screen->rect.height - (font->height + 6),
+ screen->rect.x + screen->rect.width,
+ font->height + 6};
+ uint32_t mask = XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK;
+ uint32_t values[] = {1, XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_BUTTON_PRESS};
+ screen->bar = create_window(conn, bar_rect, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_CURSOR_LEFT_PTR, true, mask, values);
+ screen->bargc = xcb_generate_id(conn);
+ xcb_create_gc(conn, screen->bargc, screen->bar, 0, 0);
+
+ SLIST_INIT(&(screen->dock_clients));
+
+ LOG("that is virtual screen at %d x %d with %d x %d\n",
+ screen->rect.x, screen->rect.y, screen->rect.width, screen->rect.height);
+}
+
/*
* Fills virtual_screens with exactly one screen with width/height of the whole X server.
*
s->rect.width = root_screen->width_in_pixels;
s->rect.height = root_screen->height_in_pixels;
+ num_screens = 1;
+ s->num = 0;
+ initialize_screen(conn, s, &(workspaces[0]));
+
TAILQ_INSERT_TAIL(virtual_screens, s, screens);
xinerama_enabled = false;
static void query_screens(xcb_connection_t *conn, struct screens_head *screenlist) {
xcb_xinerama_query_screens_reply_t *reply;
xcb_xinerama_screen_info_t *screen_info;
-
- reply = xcb_xinerama_query_screens_reply(conn, xcb_xinerama_query_screens_unchecked(conn), NULL);
- if (!reply) {
- LOG("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);
- num_screens = 0;
-
- 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.width = min(s->rect.width, screen_info[screen].width);
- s->rect.height = min(s->rect.height, screen_info[screen].height);
- } else {
- s = calloc(sizeof(i3Screen), 1);
- s->rect.x = screen_info[screen].x_org;
- s->rect.y = screen_info[screen].y_org;
- s->rect.width = screen_info[screen].width;
- s->rect.height = screen_info[screen].height;
- /* 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++;
+ time_t before_trying = time(NULL);
+
+ /* Try repeatedly to find screens (there might be short timeframes in
+ * which the X server does not return any screens, such as when rotating
+ * screens), but not longer than 5 seconds (strictly speaking, only four
+ * seconds of trying are guaranteed due to the 1-second-resolution) */
+ while ((time(NULL) - before_trying) < 5) {
+ reply = xcb_xinerama_query_screens_reply(conn, xcb_xinerama_query_screens_unchecked(conn), NULL);
+ if (!reply) {
+ LOG("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);
+ num_screens = 0;
+
+ 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.width = min(s->rect.width, screen_info[screen].width);
+ s->rect.height = min(s->rect.height, screen_info[screen].height);
+ } else {
+ s = calloc(sizeof(i3Screen), 1);
+ s->rect.x = screen_info[screen].x_org;
+ s->rect.y = screen_info[screen].y_org;
+ s->rect.width = screen_info[screen].width;
+ s->rect.height = screen_info[screen].height;
+ /* 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++;
+ }
- LOG("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);
-}
-
-static void initialize_screen(xcb_connection_t *conn, i3Screen *screen, Workspace *workspace) {
- i3Font *font = load_font(conn, config.font);
+ LOG("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);
+ }
- workspace->screen = screen;
- screen->current_workspace = workspace->num;
+ free(reply);
- /* Create a bar for each screen */
- Rect bar_rect = {screen->rect.x,
- screen->rect.height - (font->height + 6),
- screen->rect.x + screen->rect.width,
- font->height + 6};
- uint32_t mask = XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK;
- uint32_t values[] = {1, XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_BUTTON_PRESS};
- screen->bar = create_window(conn, bar_rect, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_CURSOR_LEFT_PTR, mask, values);
- screen->bargc = xcb_generate_id(conn);
- xcb_create_gc(conn, screen->bargc, screen->bar, 0, 0);
+ if (num_screens == 0) {
+ LOG("No screens found. This is weird. Trying again...\n");
+ continue;
+ }
- /* Copy dimensions */
- memcpy(&(workspace->rect), &(screen->rect), sizeof(Rect));
- LOG("that is virtual screen at %d x %d with %d x %d\n",
- screen->rect.x, screen->rect.y, screen->rect.width, screen->rect.height);
+ break;
+ }
}
/*
if (reply == NULL || !reply->state) {
LOG("Xinerama is not active (in your X-Server), disabling.\n");
- FREE(reply);
disable_xinerama(conn);
- return;
- }
+ } else
+ query_screens(conn, virtual_screens);
FREE(reply);
- query_screens(conn, virtual_screens);
-
- i3Screen *s;
+ i3Screen *screen;
num_screens = 0;
/* Just go through each workspace and associate as many screens as we can. */
- TAILQ_FOREACH(s, virtual_screens, screens) {
- s->num = num_screens;
- initialize_screen(conn, s, &(workspaces[num_screens]));
+ TAILQ_FOREACH(screen, virtual_screens, screens) {
+ screen->num = num_screens;
num_screens++;
+ Workspace *ws = get_first_workspace_for_screen(virtual_screens, screen);
+ initialize_screen(conn, screen, ws);
}
}
*
*/
void xinerama_requery_screens(xcb_connection_t *conn) {
+ i3Font *font = load_font(conn, config.font);
+
/* 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? */
query_screens(conn, new_screens);
i3Screen *first = TAILQ_FIRST(new_screens),
- *screen;
+ *screen,
+ *old_screen;
int screen_count = 0;
+ /* Mark each workspace which currently is assigned to a screen, so we
+ * can garbage-collect afterwards */
+ for (int c = 0; c < 10; c++)
+ workspaces[c].reassigned = (workspaces[c].screen == NULL);
+
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)) {
- LOG("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;
-
- /* Re-use the old bar window */
- screen->bar = workspaces[c].screen->bar;
- screen->bargc = workspaces[c].screen->bargc;
-
- /* Update the dimensions */
- memcpy(&(workspaces[c].rect), &(screen->rect), sizeof(Rect));
- workspaces[c].screen = screen;
+
+ TAILQ_FOREACH(old_screen, virtual_screens, screens) {
+ if (old_screen->num != screen_count)
+ continue;
+
+ LOG("Found a matching screen\n");
+ /* Use the same workspace */
+ screen->current_workspace = old_screen->current_workspace;
+
+ /* Re-use the old bar window */
+ screen->bar = old_screen->bar;
+ screen->bargc = old_screen->bargc;
+ LOG("old_screen->bar = %p\n", old_screen->bar);
+
+ Rect bar_rect = {screen->rect.x,
+ screen->rect.height - (font->height + 6),
+ screen->rect.x + screen->rect.width,
+ font->height + 6};
+
+ LOG("configuring bar to be at %d x %d with %d x %d\n",
+ bar_rect.x, bar_rect.y, bar_rect.height, bar_rect.width);
+ xcb_configure_window(conn, screen->bar, XCB_CONFIG_WINDOW_X |
+ XCB_CONFIG_WINDOW_Y |
+ XCB_CONFIG_WINDOW_WIDTH |
+ XCB_CONFIG_WINDOW_HEIGHT, &(bar_rect.x));
+
+ /* Copy the list head for the dock clients */
+ screen->dock_clients = old_screen->dock_clients;
+
+ /* Update the dimensions */
+ for (int c = 0; c < 10; c++) {
+ Workspace *ws = &(workspaces[c]);
+ if (ws->screen != old_screen)
+ continue;
+
+ LOG("re-assigning ws %d\n", ws->num);
+ memcpy(&(ws->rect), &(screen->rect), sizeof(Rect));
+ ws->screen = screen;
+ ws->reassigned = true;
}
+
+ break;
+ }
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) {
- LOG("fix: initializing new workspace, setting num to %d\n", c);
- initialize_screen(conn, screen, &(workspaces[c]));
- break;
- }
+ /* Find the first unused workspace, preferring the ones
+ * which are assigned to this screen and initialize
+ * the screen with it. */
+ LOG("getting first ws for screen %p\n", screen);
+ Workspace *ws = get_first_workspace_for_screen(new_screens, screen);
+ initialize_screen(conn, screen, ws);
+
+ /* As this workspace just got visible (we got a new screen
+ * without workspace), we need to map its clients */
+ workspace_map_clients(conn, ws);
}
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)) {
- LOG("Closing bar window\n");
- xcb_destroy_window(conn, workspaces[c].screen->bar);
-
- LOG("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));
+ for (int c = 0; c < 10; c++) {
+ if (workspaces[c].reassigned)
+ continue;
+
+ /* f_ws is a shortcut to the workspace to fix */
+ Workspace *f_ws = &(workspaces[c]);
+ Client *client;
+
+ LOG("Closing bar window (%p)\n", f_ws->screen->bar);
+ xcb_destroy_window(conn, f_ws->screen->bar);
+
+ LOG("Workspace %d's screen out of bounds, assigning to first screen\n", c+1);
+ f_ws->screen = first;
+ memcpy(&(f_ws->rect), &(first->rect), sizeof(Rect));
+
+ /* Force reconfiguration for each client on that workspace */
+ FOR_TABLE(f_ws)
+ CIRCLEQ_FOREACH(client, &(f_ws->table[cols][rows]->clients), clients)
+ client->force_reconfigure = true;
+
+ /* Render the workspace to reconfigure the clients. However, they will be visible now, so… */
+ render_workspace(conn, first, f_ws);
+
+ /* …unless we want to see them at the moment, we should hide that workspace */
+ if (workspace_is_visible(f_ws))
+ continue;
+
+ workspace_unmap_clients(conn, f_ws);
+
+ if (c_ws == f_ws) {
+ LOG("Need to adjust c_ws...\n");
+ c_ws = &(workspaces[first->current_workspace]);
}
+ }
+ xcb_flush(conn);
/* Free the old list */
while (!TAILQ_EMPTY(virtual_screens)) {
projects / i3 / i3 / blobdiff