/* * vim:ts=8:expandtab * * i3 - an improved dynamic tiling window manager * * © 2009 Michael Stapelberg and contributors * * See file LICENSE for license information. * */ #include #include #include #include #include #include #include #include "util.h" #include "data.h" #include "table.h" #include "layout.h" #include "i3.h" #include "xinerama.h" bool focus_window_in_container(xcb_connection_t *conn, Container *container, direction_t direction) { /* If this container is empty, we’re done */ if (container->currently_focused == NULL) return false; /* Get the previous/next client or wrap around */ Client *candidate = NULL; if (direction == D_UP) { if ((candidate = CIRCLEQ_PREV_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL) candidate = CIRCLEQ_LAST(&(container->clients)); } else if (direction == D_DOWN) { if ((candidate = CIRCLEQ_NEXT_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL) candidate = CIRCLEQ_FIRST(&(container->clients)); } else LOG("Direction not implemented!\n"); /* If we could not switch, the container contains exactly one client. We return false */ if (candidate == container->currently_focused) return false; /* Set focus */ set_focus(conn, candidate, true); return true; } typedef enum { THING_WINDOW, THING_CONTAINER } thing_t; static void focus_thing(xcb_connection_t *conn, direction_t direction, thing_t thing) { LOG("focusing direction %d\n", direction); int new_row = current_row, new_col = current_col; Container *container = CUR_CELL; Workspace *t_ws = c_ws; /* There always is a container. If not, current_col or current_row is wrong */ assert(container != NULL); if (container->workspace->fullscreen_client != NULL) { LOG("You're in fullscreen mode. Won't switch focus\n"); return; } /* TODO: for horizontal default layout, this has to be expanded to LEFT/RIGHT */ if (direction == D_UP || direction == D_DOWN) { if (thing == THING_WINDOW) /* Let’s see if we can perform up/down focus in the current container */ if (focus_window_in_container(conn, container, direction)) return; if (direction == D_DOWN && cell_exists(current_col, current_row+1)) new_row++; else if (direction == D_UP && cell_exists(current_col, current_row-1)) new_row--; else { /* Let’s see if there is a screen down/up there to which we can switch */ LOG("container is at %d with height %d\n", container->y, container->height); i3Screen *screen; int destination_y = (direction == D_UP ? (container->y - 1) : (container->y + container->height + 1)); if ((screen = get_screen_containing(container->x, destination_y)) == NULL) { LOG("Wrapping screen around vertically\n"); /* No screen found? Then wrap */ screen = get_screen_most((direction == D_UP ? D_DOWN : D_UP)); } t_ws = &(workspaces[screen->current_workspace]); new_row = (direction == D_UP ? (t_ws->rows - 1) : 0); } } else if (direction == D_LEFT || direction == D_RIGHT) { if (direction == D_RIGHT && cell_exists(current_col+1, current_row)) new_col++; else if (direction == D_LEFT && cell_exists(current_col-1, current_row)) new_col--; else { /* Let’s see if there is a screen left/right here to which we can switch */ LOG("container is at %d with width %d\n", container->x, container->width); i3Screen *screen; int destination_x = (direction == D_LEFT ? (container->x - 1) : (container->x + container->width + 1)); if ((screen = get_screen_containing(destination_x, container->y)) == NULL) { LOG("Wrapping screen around horizontally\n"); screen = get_screen_most((direction == D_LEFT ? D_RIGHT : D_LEFT)); } t_ws = &(workspaces[screen->current_workspace]); new_col = (direction == D_LEFT ? (t_ws->cols - 1) : 0); } } else { LOG("direction unhandled\n"); return; } /* Bounds checking */ if (new_col >= t_ws->cols) new_col = (t_ws->cols - 1); if (new_row >= t_ws->rows) new_row = (t_ws->rows - 1); if (t_ws->table[new_col][new_row]->currently_focused != NULL) set_focus(conn, t_ws->table[new_col][new_row]->currently_focused, true); } /* * Tries to move the window inside its current container. * * Returns true if the window could be moved, false otherwise. * */ static bool move_current_window_in_container(xcb_connection_t *conn, Client *client, direction_t direction) { assert(client->container != NULL); Client *other = (direction == D_UP ? CIRCLEQ_PREV(client, clients) : CIRCLEQ_NEXT(client, clients)); if (other == CIRCLEQ_END(&(client->container->clients))) return false; LOG("i can do that\n"); /* We can move the client inside its current container */ CIRCLEQ_REMOVE(&(client->container->clients), client, clients); if (direction == D_UP) CIRCLEQ_INSERT_BEFORE(&(client->container->clients), other, client, clients); else CIRCLEQ_INSERT_AFTER(&(client->container->clients), other, client, clients); render_layout(conn); return true; } /* * Moves the current window or whole container to the given direction, creating a column/row if * necessary. * */ static void move_current_window(xcb_connection_t *conn, direction_t direction) { LOG("moving window to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" : (direction == D_LEFT ? "left" : "right")))); /* Get current window */ Container *container = CUR_CELL, *new = NULL; /* There has to be a container, see focus_window() */ assert(container != NULL); /* If there is no window or the dock window is focused, we’re done */ if (container->currently_focused == NULL || container->currently_focused->dock) return; /* As soon as the client is moved away, the last focused client in the old * container needs to get focus, if any. Therefore, we save it here. */ Client *current_client = container->currently_focused; Client *to_focus = get_last_focused_client(conn, container, current_client); if (to_focus == NULL) { to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients); if (to_focus == NULL) to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients); } switch (direction) { case D_LEFT: /* If we’re at the left-most position, move the rest of the table right */ if (current_col == 0) { expand_table_cols_at_head(c_ws); new = CUR_CELL; } else new = CUR_TABLE[--current_col][current_row]; break; case D_RIGHT: if (current_col == (c_ws->cols-1)) expand_table_cols(c_ws); new = CUR_TABLE[++current_col][current_row]; break; case D_UP: if (move_current_window_in_container(conn, current_client, D_UP)) return; /* if we’re at the up-most position, move the rest of the table down */ if (current_row == 0) { expand_table_rows_at_head(c_ws); new = CUR_CELL; } else new = CUR_TABLE[current_col][--current_row]; break; case D_DOWN: if (move_current_window_in_container(conn, current_client, D_DOWN)) return; if (current_row == (c_ws->rows-1)) expand_table_rows(c_ws); new = CUR_TABLE[current_col][++current_row]; break; } /* Remove it from the old container and put it into the new one */ remove_client_from_container(conn, current_client, container); CIRCLEQ_INSERT_TAIL(&(new->clients), current_client, clients); SLIST_INSERT_HEAD(&(new->workspace->focus_stack), current_client, focus_clients); /* Update data structures */ current_client->container = new; container->currently_focused = to_focus; new->currently_focused = current_client; Workspace *workspace = container->workspace; /* delete all empty columns/rows */ cleanup_table(conn, workspace); /* Fix colspan/rowspan if it’d overlap */ fix_colrowspan(conn, workspace); render_layout(conn); set_focus(conn, current_client, true); } static void move_current_container(xcb_connection_t *conn, direction_t direction) { LOG("moving container to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" : (direction == D_LEFT ? "left" : "right")))); /* Get current window */ Container *container = CUR_CELL, *new = NULL; Container **old = &CUR_CELL; /* There has to be a container, see focus_window() */ assert(container != NULL); switch (direction) { case D_LEFT: /* If we’re at the left-most position, move the rest of the table right */ if (current_col == 0) { expand_table_cols_at_head(c_ws); new = CUR_CELL; old = &CUR_TABLE[current_col+1][current_row]; } else new = CUR_TABLE[--current_col][current_row]; break; case D_RIGHT: if (current_col == (c_ws->cols-1)) expand_table_cols(c_ws); new = CUR_TABLE[++current_col][current_row]; break; case D_UP: /* if we’re at the up-most position, move the rest of the table down */ if (current_row == 0) { expand_table_rows_at_head(c_ws); new = CUR_CELL; old = &CUR_TABLE[current_col][current_row+1]; } else new = CUR_TABLE[current_col][--current_row]; break; case D_DOWN: if (current_row == (c_ws->rows-1)) expand_table_rows(c_ws); new = CUR_TABLE[current_col][++current_row]; break; } LOG("old = %d,%d and new = %d,%d\n", container->col, container->row, new->col, new->row); /* Swap the containers */ int col = new->col; int row = new->row; *old = new; new->col = container->col; new->row = container->row; CUR_CELL = container; container->col = col; container->row = row; Workspace *workspace = container->workspace; /* delete all empty columns/rows */ cleanup_table(conn, workspace); /* Fix colspan/rowspan if it’d overlap */ fix_colrowspan(conn, workspace); render_layout(conn); } /* * "Snaps" the current container (not possible for windows, because it works at table base) * to the given direction, that is, adjusts cellspan/rowspan * */ static void snap_current_container(xcb_connection_t *conn, direction_t direction) { LOG("snapping container to direction %d\n", direction); Container *container = CUR_CELL; assert(container != NULL); switch (direction) { case D_LEFT: /* Snap to the left is actually a move to the left and then a snap right */ if (!cell_exists(container->col - 1, container->row) || CUR_TABLE[container->col-1][container->row]->currently_focused != NULL) { LOG("cannot snap to left - the cell is already used\n"); return; } move_current_window(conn, D_LEFT); snap_current_container(conn, D_RIGHT); return; case D_RIGHT: { /* Check if the cell is used */ int new_col = container->col + container->colspan; if (!cell_exists(new_col, container->row) || CUR_TABLE[new_col][container->row]->currently_focused != NULL) { LOG("cannot snap to right - the cell is already used\n"); return; } /* Check if there are other cells with rowspan, which are in our way. * If so, reduce their rowspan. */ for (int i = container->row-1; i >= 0; i--) { LOG("we got cell %d, %d with rowspan %d\n", new_col, i, CUR_TABLE[new_col][i]->rowspan); while ((CUR_TABLE[new_col][i]->rowspan-1) >= (container->row - i)) CUR_TABLE[new_col][i]->rowspan--; LOG("new rowspan = %d\n", CUR_TABLE[new_col][i]->rowspan); } container->colspan++; break; } case D_UP: if (!cell_exists(container->col, container->row - 1) || CUR_TABLE[container->col][container->row-1]->currently_focused != NULL) { LOG("cannot snap to top - the cell is already used\n"); return; } move_current_window(conn, D_UP); snap_current_container(conn, D_DOWN); return; case D_DOWN: { LOG("snapping down\n"); int new_row = container->row + container->rowspan; if (!cell_exists(container->col, new_row) || CUR_TABLE[container->col][new_row]->currently_focused != NULL) { LOG("cannot snap down - the cell is already used\n"); return; } for (int i = container->col-1; i >= 0; i--) { LOG("we got cell %d, %d with colspan %d\n", i, new_row, CUR_TABLE[i][new_row]->colspan); while ((CUR_TABLE[i][new_row]->colspan-1) >= (container->col - i)) CUR_TABLE[i][new_row]->colspan--; LOG("new colspan = %d\n", CUR_TABLE[i][new_row]->colspan); } container->rowspan++; break; } } render_layout(conn); } /* * Moves the currently selected window to the given workspace * */ static void move_current_window_to_workspace(xcb_connection_t *conn, int workspace) { LOG("Moving current window to workspace %d\n", workspace); Container *container = CUR_CELL; assert(container != NULL); /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */ Workspace *t_ws = &(workspaces[workspace-1]); Client *current_client = container->currently_focused; if (current_client == NULL) { LOG("No currently focused client in current container.\n"); return; } Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients); if (to_focus == NULL) to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients); if (t_ws->screen == NULL) { LOG("initializing new workspace, setting num to %d\n", workspace-1); t_ws->screen = container->workspace->screen; /* Copy the dimensions from the virtual screen */ memcpy(&(t_ws->rect), &(container->workspace->screen->rect), sizeof(Rect)); } Container *to_container = t_ws->table[t_ws->current_col][t_ws->current_row]; assert(to_container != NULL); remove_client_from_container(conn, current_client, container); CIRCLEQ_INSERT_TAIL(&(to_container->clients), current_client, clients); SLIST_INSERT_HEAD(&(to_container->workspace->focus_stack), current_client, focus_clients); LOG("Moved.\n"); current_client->container = to_container; container->currently_focused = to_focus; to_container->currently_focused = current_client; /* If we’re moving it to an invisible screen, we need to unmap it */ if (to_container->workspace->screen->current_workspace != to_container->workspace->num) { LOG("This workspace is not visible, unmapping\n"); xcb_unmap_window(conn, current_client->frame); } /* delete all empty columns/rows */ cleanup_table(conn, container->workspace); render_layout(conn); } /* * Switches to the given workspace * */ void show_workspace(xcb_connection_t *conn, int workspace) { Client *client; bool need_warp = false; xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root; /* t_ws (to workspace) is just a convenience pointer to the workspace we’re switching to */ Workspace *t_ws = &(workspaces[workspace-1]); LOG("show_workspace(%d)\n", workspace); /* Store current_row/current_col */ c_ws->current_row = current_row; c_ws->current_col = current_col; /* Check if the workspace has not been used yet */ if (t_ws->screen == NULL) { LOG("initializing new workspace, setting num to %d\n", workspace); t_ws->screen = c_ws->screen; /* Copy the dimensions from the virtual screen */ memcpy(&(t_ws->rect), &(t_ws->screen->rect), sizeof(Rect)); } if (c_ws->screen != t_ws->screen) { /* We need to switch to the other screen first */ LOG("moving over to other screen.\n"); /* Store the old client */ Client *old_client = CUR_CELL->currently_focused; c_ws = &(workspaces[t_ws->screen->current_workspace]); current_col = c_ws->current_col; current_row = c_ws->current_row; if (CUR_CELL->currently_focused != NULL) need_warp = true; else { Rect *dims = &(c_ws->screen->rect); xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, dims->x + (dims->width / 2), dims->y + (dims->height / 2)); } /* Re-decorate the old client, it’s not focused anymore */ if ((old_client != NULL) && !old_client->dock) redecorate_window(conn, old_client); else xcb_flush(conn); } /* Check if we need to change something or if we’re already there */ if (c_ws->screen->current_workspace == (workspace-1)) { if (CUR_CELL->currently_focused != NULL) { set_focus(conn, CUR_CELL->currently_focused, true); if (need_warp) { warp_pointer_into(conn, CUR_CELL->currently_focused); xcb_flush(conn); } } return; } t_ws->screen->current_workspace = workspace-1; /* TODO: does grabbing the server actually bring us any (speed)advantages? */ //xcb_grab_server(conn); ignore_enter_notify_forall(conn, c_ws, true); /* Unmap all clients of the current workspace */ int unmapped_clients = 0; FOR_TABLE(c_ws) CIRCLEQ_FOREACH(client, &(c_ws->table[cols][rows]->clients), clients) { xcb_unmap_window(conn, client->frame); unmapped_clients++; } /* If we did not unmap any clients, the workspace is empty and we can destroy it */ if (unmapped_clients == 0) c_ws->screen = NULL; /* Unmap the stack windows on the current workspace, if any */ struct Stack_Window *stack_win; SLIST_FOREACH(stack_win, &stack_wins, stack_windows) if (stack_win->container->workspace == c_ws) xcb_unmap_window(conn, stack_win->window); ignore_enter_notify_forall(conn, c_ws, false); c_ws = &workspaces[workspace-1]; current_row = c_ws->current_row; current_col = c_ws->current_col; LOG("new current row = %d, current col = %d\n", current_row, current_col); ignore_enter_notify_forall(conn, c_ws, true); /* Map all clients on the new workspace */ FOR_TABLE(c_ws) CIRCLEQ_FOREACH(client, &(c_ws->table[cols][rows]->clients), clients) xcb_map_window(conn, client->frame); /* Map all stack windows, if any */ SLIST_FOREACH(stack_win, &stack_wins, stack_windows) if (stack_win->container->workspace == c_ws) xcb_map_window(conn, stack_win->window); ignore_enter_notify_forall(conn, c_ws, false); /* Restore focus on the new workspace */ if (CUR_CELL->currently_focused != NULL) { set_focus(conn, CUR_CELL->currently_focused, true); if (need_warp) { warp_pointer_into(conn, CUR_CELL->currently_focused); xcb_flush(conn); } } else xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME); //xcb_ungrab_server(conn); render_layout(conn); } /* * Parses a command, see file CMDMODE for more information * */ void parse_command(xcb_connection_t *conn, const char *command) { LOG("--- parsing command \"%s\" ---\n", command); /* Hmm, just to be sure */ if (command[0] == '\0') return; /* Is it an ? Then execute the given command. */ if (STARTS_WITH(command, "exec ")) { LOG("starting \"%s\"\n", command + strlen("exec ")); start_application(command+strlen("exec ")); return; } /* Is it an ? */ if (STARTS_WITH(command, "exit")) { LOG("User issued exit-command, exiting without error.\n"); exit(EXIT_SUCCESS); } /* Is it ? Then restart in place. */ if (STARTS_WITH(command, "restart")) { LOG("restarting \"%s\"...\n", application_path); execl(application_path, application_path, NULL); /* not reached */ } if (STARTS_WITH(command, "kill")) { if (CUR_CELL->currently_focused == NULL) { LOG("There is no window to kill\n"); return; } LOG("Killing current window\n"); kill_window(conn, CUR_CELL->currently_focused); return; } /* Is it 'f' for fullscreen? */ if (command[0] == 'f') { if (CUR_CELL->currently_focused == NULL) return; toggle_fullscreen(conn, CUR_CELL->currently_focused); return; } /* Is it just 's' for stacking or 'd' for default? */ if ((command[0] == 's' || command[0] == 'd') && (command[1] == '\0')) { LOG("Switching mode for current container\n"); switch_layout_mode(conn, CUR_CELL, (command[0] == 's' ? MODE_STACK : MODE_DEFAULT)); return; } enum { WITH_WINDOW, WITH_CONTAINER } with = WITH_WINDOW; /* Is it a ? */ if (command[0] == 'w') { command++; /* TODO: implement */ if (command[0] == 'c') { with = WITH_CONTAINER; command++; } else { LOG("not yet implemented.\n"); return; } } /* It's a normal */ char *rest = NULL; enum { ACTION_FOCUS, ACTION_MOVE, ACTION_SNAP } action = ACTION_FOCUS; direction_t direction; int times = strtol(command, &rest, 10); if (rest == NULL) { LOG("Invalid command (\"%s\")\n", command); return; } if (*rest == '\0') { /* No rest? This was a tag number, not a times specification */ show_workspace(conn, times); return; } if (*rest == 'm' || *rest == 's') { action = (*rest == 'm' ? ACTION_MOVE : ACTION_SNAP); rest++; } int workspace = strtol(rest, &rest, 10); if (rest == NULL) { LOG("Invalid command (\"%s\")\n", command); return; } if (*rest == '\0') { move_current_window_to_workspace(conn, workspace); return; } /* Now perform action to */ while (*rest != '\0') { if (*rest == 'h') direction = D_LEFT; else if (*rest == 'j') direction = D_DOWN; else if (*rest == 'k') direction = D_UP; else if (*rest == 'l') direction = D_RIGHT; else { LOG("unknown direction: %c\n", *rest); return; } if (action == ACTION_FOCUS) focus_thing(conn, direction, (with == WITH_WINDOW ? THING_WINDOW : THING_CONTAINER)); else if (action == ACTION_MOVE) { if (with == WITH_WINDOW) move_current_window(conn, direction); else move_current_container(conn, direction); } else if (action == ACTION_SNAP) snap_current_container(conn, direction); rest++; } LOG("--- done ---\n"); }