X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=src%2Fxinerama.c;h=d0651a851dadf9acf0787c4502d67564a941b474;hb=f4981f97bcd1c28fcc64f002ac89e5011870582f;hp=81359ec2ba76881421bebd89effc0d42a4040498;hpb=e900a8d23db1c10a36b8c45327d68038b0607a9b;p=i3%2Fi3 diff --git a/src/xinerama.c b/src/xinerama.c index 81359ec2..d0651a85 100644 --- a/src/xinerama.c +++ b/src/xinerama.c @@ -1,249 +1,104 @@ /* - * vim:ts=8:expandtab + * vim:ts=4:sw=4:expandtab * * i3 - an improved dynamic tiling window manager + * © 2009 Michael Stapelberg and contributors (see also: LICENSE) * - * © 2009 Michael Stapelberg and contributors - * - * See file LICENSE for license information. + * This is LEGACY code (we support RandR, which can do much more than + * Xinerama), but necessary for the poor users of the nVidia binary + * driver which does not support RandR in 2011 *sigh*. * */ -#include -#include -#include -#include -#include -#include -#include +#include "all.h" -#include #include -#include "queue.h" -#include "i3.h" -#include "data.h" -#include "table.h" -#include "util.h" -#include "xinerama.h" -#include "layout.h" -#include "xcb.h" -#include "config.h" -#include "workspace.h" -#include "log.h" - -/* This TAILQ of i3Screens stores the virtual screens, used for handling overlapping screens - * (xrandr --same-as) */ -struct screens_head *virtual_screens; - -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 - * - */ -i3Screen *get_screen_at(int x, int y, struct screens_head *screenlist) { - i3Screen *screen; - TAILQ_FOREACH(screen, screenlist, screens) - if (screen->rect.x == x && screen->rect.y == y) - return screen; - - return NULL; -} +static int num_screens; /* - * Looks in virtual_screens for the i3Screen which contains coordinates x, y + * Looks in outputs for the Output whose start coordinates are x, y * */ -i3Screen *get_screen_containing(int x, int y) { - i3Screen *screen; - TAILQ_FOREACH(screen, virtual_screens, screens) { - DLOG("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; - } +static Output *get_screen_at(unsigned int x, unsigned int y) { + Output *output; + TAILQ_FOREACH(output, &outputs, outputs) + if (output->rect.x == x && output->rect.y == y) + return output; - return NULL; + return NULL; } /* - * Gets the screen which is the last one in the given direction, for example the screen - * on the most bottom when direction == D_DOWN, the screen most right when direction == D_RIGHT - * and so on. - * - * This function always returns a screen. + * Gets the Xinerama screens and converts them to virtual Outputs (only one screen for two + * Xinerama screen which are configured in clone mode) in the given screenlist * */ -i3Screen *get_screen_most(direction_t direction, i3Screen *current) { - i3Screen *screen, *candidate = NULL; - int position = 0; - TAILQ_FOREACH(screen, virtual_screens, screens) { - /* Repeated calls of WIN determine the winner of the comparison */ - #define WIN(variable, condition) \ - if (variable condition) { \ - candidate = screen; \ - position = variable; \ - } \ - break; - - if (((direction == D_UP) || (direction == D_DOWN)) && - (current->rect.x != screen->rect.x)) - continue; - - if (((direction == D_LEFT) || (direction == D_RIGHT)) && - (current->rect.y != screen->rect.y)) - continue; - - switch (direction) { - case D_UP: - WIN(screen->rect.y, <= position); - case D_DOWN: - WIN(screen->rect.y, >= position); - case D_LEFT: - WIN(screen->rect.x, <= position); - case D_RIGHT: - WIN(screen->rect.x, >= position); - } +static void query_screens(xcb_connection_t *conn) { + 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) { + ELOG("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); + + for (int screen = 0; screen < screens; screen++) { + Output *s = get_screen_at(screen_info[screen].x_org, screen_info[screen].y_org); + if (s != NULL) { + DLOG("Re-used old Xinerama screen %p\n", s); + /* 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 = scalloc(1, sizeof(Output)); + struct output_name *output_name = scalloc(1, sizeof(struct output_name)); + sasprintf(&output_name->name, "xinerama-%d", num_screens); + SLIST_INIT(&s->names_head); + SLIST_INSERT_HEAD(&s->names_head, output_name, names); + DLOG("Created new Xinerama screen %s (%p)\n", output_primary_name(s), s); + s->active = true; + 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(&outputs, s, outputs); + else + TAILQ_INSERT_TAIL(&outputs, s, outputs); + output_init_con(s); + init_ws_for_output(s, output_get_content(s->con)); + num_screens++; } - assert(candidate != NULL); - - 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; - - /* Create a bar for each screen */ - Rect bar_rect = {screen->rect.x, - screen->rect.y + 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)); - - DLOG("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. - * - */ -static void disable_xinerama(xcb_connection_t *conn) { - xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data; - - i3Screen *s = calloc(sizeof(i3Screen), 1); + DLOG("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); + } - s->rect.x = 0; - s->rect.y = 0; - s->rect.width = root_screen->width_in_pixels; - s->rect.height = root_screen->height_in_pixels; + free(reply); - num_screens = 1; - s->num = 0; - - TAILQ_INSERT_TAIL(virtual_screens, s, screens); - - xinerama_enabled = false; + if (num_screens == 0) { + ELOG("No screens found. Please fix your setup. i3 will exit now.\n"); + exit(0); + } } /* - * 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 + * This creates the root_output (borrowed from randr.c) and uses it + * as the sole output for this session. * */ -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; - 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) < 10) { - reply = xcb_xinerama_query_screens_reply(conn, xcb_xinerama_query_screens_unchecked(conn), NULL); - if (!reply) { - ELOG("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) { - DLOG("Re-used old Xinerama screen %p\n", s); - /* 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); - DLOG("Created new Xinerama screen %p\n", s); - 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++; - } - - DLOG("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); - - if (num_screens == 0) { - ELOG("No screens found. This is weird. Trying again...\n"); - /* Give the scheduler a chance to do something else - * and don’t hog the CPU */ - usleep(250); - continue; - } - - break; - } - - if (num_screens == 0) { - ELOG("No screens found for 10 seconds. Please fix your setup. i3 will exit now.\n"); - exit(0); - } +static void use_root_output(xcb_connection_t *conn) { + Output *s = create_root_output(conn); + s->active = true; + TAILQ_INSERT_TAIL(&outputs, s, outputs); + output_init_con(s); + init_ws_for_output(s, output_get_content(s->con)); } /* @@ -251,187 +106,20 @@ static void query_screens(xcb_connection_t *conn, struct screens_head *screenlis * information to setup workspaces for each screen. * */ -void initialize_xinerama(xcb_connection_t *conn) { - virtual_screens = scalloc(sizeof(struct screens_head)); - TAILQ_INIT(virtual_screens); - - if (!xcb_get_extension_data(conn, &xcb_xinerama_id)->present) { - DLOG("Xinerama extension not found, disabling.\n"); - disable_xinerama(conn); - } else { - xcb_xinerama_is_active_reply_t *reply; - reply = xcb_xinerama_is_active_reply(conn, xcb_xinerama_is_active(conn), NULL); - - if (reply == NULL || !reply->state) { - DLOG("Xinerama is not active (in your X-Server), disabling.\n"); - disable_xinerama(conn); - } else - query_screens(conn, virtual_screens); - - FREE(reply); - } - - i3Screen *screen; - num_screens = 0; - /* Just go through each workspace and associate as many screens as we can. */ - 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); - } -} - -/* - * 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 *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? */ - - if (!xinerama_enabled) { - DLOG("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(conn, new_screens); - - i3Screen *first = TAILQ_FIRST(new_screens), - *screen, - *old_screen; - int screen_count = 0; - /* Mark each workspace which currently is assigned to a screen, so we - * can garbage-collect afterwards */ - Workspace *ws; - TAILQ_FOREACH(ws, workspaces, workspaces) - ws->reassigned = (ws->screen == NULL); - - TAILQ_FOREACH(screen, new_screens, screens) { - screen->num = screen_count; - screen->current_workspace = NULL; - - TAILQ_FOREACH(old_screen, virtual_screens, screens) { - if (old_screen->num != screen_count) - continue; - - DLOG("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; - DLOG("old_screen->bar = %p\n", old_screen->bar); - - Rect bar_rect = {screen->rect.x, - screen->rect.y + screen->rect.height - (font->height + 6), - screen->rect.width, - font->height + 6}; - - DLOG("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; - SLIST_INIT(&(old_screen->dock_clients)); - - /* Update the dimensions */ - Workspace *ws; - TAILQ_FOREACH(ws, workspaces, workspaces) { - if (ws->screen != old_screen) - continue; - - DLOG("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 == NULL) { - /* Find the first unused workspace, preferring the ones - * which are assigned to this screen and initialize - * the screen with it. */ - DLOG("getting first ws for screen %p\n", screen); - Workspace *ws = get_first_workspace_for_screen(new_screens, screen); - initialize_screen(conn, screen, ws); - ws->reassigned = true; - - /* 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 dock_clients which are out of bounds */ - TAILQ_FOREACH(old_screen, virtual_screens, screens) { - if (SLIST_EMPTY(&(old_screen->dock_clients))) - continue; - - DLOG("dock_clients out of bounds at screen %p, reassigning\n", old_screen); - if (SLIST_EMPTY(&(first->dock_clients))) { - first->dock_clients = old_screen->dock_clients; - continue; - } - - /* We need to merge the lists */ - Client *dock_client; - - while (!SLIST_EMPTY(&(old_screen->dock_clients))) { - dock_client = SLIST_FIRST(&(old_screen->dock_clients)); - SLIST_INSERT_HEAD(&(first->dock_clients), dock_client, dock_clients); - SLIST_REMOVE_HEAD(&(old_screen->dock_clients), dock_clients); - } - } - - /* Check for workspaces which are out of bounds */ - TAILQ_FOREACH(ws, workspaces, workspaces) { - if (ws->reassigned) - continue; - - DLOG("Closing bar window (%p)\n", ws->screen->bar); - xcb_destroy_window(conn, ws->screen->bar); - - DLOG("Workspace %d's screen out of bounds, assigning to first screen\n", ws->num + 1); - workspace_assign_to(ws, first); - } - - xcb_flush(conn); - - /* Free the old list */ - while (!TAILQ_EMPTY(virtual_screens)) { - screen = TAILQ_FIRST(virtual_screens); - TAILQ_REMOVE(virtual_screens, screen, screens); - free(screen); - } - free(virtual_screens); - - virtual_screens = new_screens; - - /* Check for workspaces which need to be assigned to specific screens - * which may now be available */ - TAILQ_FOREACH(ws, workspaces, workspaces) { - if (ws->preferred_screen == NULL) - continue; - - workspace_initialize(ws, ws->screen, true); - } - - DLOG("Current workspace is now: %d\n", first->current_workspace); - - render_layout(conn); +void xinerama_init(void) { + if (!xcb_get_extension_data(conn, &xcb_xinerama_id)->present) { + DLOG("Xinerama extension not found, using root output.\n"); + use_root_output(conn); + } else { + xcb_xinerama_is_active_reply_t *reply; + reply = xcb_xinerama_is_active_reply(conn, xcb_xinerama_is_active(conn), NULL); + + if (reply == NULL || !reply->state) { + DLOG("Xinerama is not active (in your X-Server), using root output.\n"); + use_root_output(conn); + } else + query_screens(conn); + + FREE(reply); + } }