/* * vim:ts=8:expandtab * * i3 - an improved dynamic tiling window manager * * © 2009 Michael Stapelberg and contributors * * See file LICENSE for license information. * * src/floating.c: contains all functions for handling floating clients * */ #include #include #include #include #include #include "i3.h" #include "config.h" #include "data.h" #include "util.h" #include "xcb.h" #include "debug.h" #include "layout.h" #include "client.h" /* On which border was the dragging initiated? */ typedef enum { BORDER_LEFT, BORDER_RIGHT, BORDER_TOP, BORDER_BOTTOM} border_t; /* Callback for dragging */ typedef void(*callback_t)(xcb_connection_t*, Client*, border_t, Rect*, xcb_button_press_event_t*, uint32_t, uint32_t); /* Forward definitions */ static void drag_pointer(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event, border_t border, callback_t callback); /* * Toggles floating mode for the given client. * Correctly takes care of the position/size (separately stored for tiling/floating mode) * and repositions/resizes/redecorates the client. * * If the automatic flag is set to true, this was an automatic update by a change of the * window class from the application which can be overwritten by the user. * */ void toggle_floating_mode(xcb_connection_t *conn, Client *client, bool automatic) { Container *con = client->container; i3Font *font = load_font(conn, config.font); if (con == NULL) { LOG("This client is already in floating (container == NULL), re-inserting\n"); Client *next_tiling; SLIST_FOREACH(next_tiling, &(client->workspace->focus_stack), focus_clients) if (next_tiling->floating <= FLOATING_USER_OFF) break; /* If there are no tiling clients on this workspace, there can only be one * container: the first one */ if (next_tiling == TAILQ_END(&(client->workspace->focus_stack))) con = client->workspace->table[0][0]; else con = next_tiling->container; /* Remove the client from the list of floating clients */ TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients); LOG("destination container = %p\n", con); Client *old_focused = con->currently_focused; /* Preserve position/size */ memcpy(&(client->floating_rect), &(client->rect), sizeof(Rect)); client->floating = FLOATING_USER_OFF; client->container = con; if (old_focused != NULL && !old_focused->dock) CIRCLEQ_INSERT_AFTER(&(con->clients), old_focused, client, clients); else CIRCLEQ_INSERT_TAIL(&(con->clients), client, clients); LOG("Re-inserted the client into the matrix.\n"); con->currently_focused = client; render_container(conn, con); xcb_flush(conn); return; } LOG("Entering floating for client %08x\n", client->child); /* Remove the client of its container */ client_remove_from_container(conn, client, con, false); client->container = NULL; /* Add the client to the list of floating clients for its workspace */ TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients); if (con->currently_focused == client) { LOG("Need to re-adjust currently_focused\n"); /* Get the next client in the focus stack for this particular container */ con->currently_focused = get_last_focused_client(conn, con, NULL); } if (automatic) client->floating = FLOATING_AUTO_ON; else client->floating = FLOATING_USER_ON; /* Initialize the floating position from the position in tiling mode, if this * client never was floating (x == -1) */ if (client->floating_rect.x == -1) { /* Copy over the position */ client->floating_rect.x = client->rect.x; client->floating_rect.y = client->rect.y; /* Copy size the other direction */ client->child_rect.width = client->floating_rect.width; client->child_rect.height = client->floating_rect.height; client->rect.width = client->child_rect.width + 2 + 2; client->rect.height = client->child_rect.height + (font->height + 2 + 2) + 2; LOG("copying size from tiling (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y, client->floating_rect.width, client->floating_rect.height); } else { /* If the client was already in floating before we restore the old position / size */ LOG("using: (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y, client->floating_rect.width, client->floating_rect.height); memcpy(&(client->rect), &(client->floating_rect), sizeof(Rect)); } /* Raise the client */ xcb_raise_window(conn, client->frame); reposition_client(conn, client); resize_client(conn, client); /* redecorate_window flushes */ redecorate_window(conn, client); /* Re-render the tiling layout of this container */ render_container(conn, con); xcb_flush(conn); } /* * Callback for resizing windows * */ static void resize_callback(xcb_connection_t *conn, Client *client, border_t border, Rect *old_rect, xcb_button_press_event_t *event, uint32_t new_x, uint32_t new_y) { switch (border) { case BORDER_RIGHT: client->rect.width = old_rect->width + (new_x - event->root_x); break; case BORDER_BOTTOM: client->rect.height = old_rect->height + (new_y - event->root_y); break; case BORDER_TOP: client->rect.y = old_rect->y + (new_y - event->root_y); client->rect.height = old_rect->height + (event->root_y - new_y); break; case BORDER_LEFT: client->rect.x = old_rect->x + (new_x - event->root_x); client->rect.width = old_rect->width + (event->root_x - new_x); break; } /* Push the new position/size to X11 */ reposition_client(conn, client); resize_client(conn, client); xcb_flush(conn); } /* * Called whenever the user clicks on a border (not the titlebar!) of a floating window. * Determines on which border the user clicked and launches the drag_pointer function * with the resize_callback. * */ int floating_border_click(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) { LOG("floating border click\n"); border_t border; if (event->event_y < 2) border = BORDER_TOP; else if (event->event_y >= (client->rect.height - 2)) border = BORDER_BOTTOM; else if (event->event_x <= 2) border = BORDER_LEFT; else if (event->event_x > 2) border = BORDER_RIGHT; else { LOG("Not on any border, not doing anything.\n"); return 1; } LOG("border = %d\n", border); drag_pointer(conn, client, event, border, resize_callback); return 1; } static void drag_window_callback(xcb_connection_t *conn, Client *client, border_t border, Rect *old_rect, xcb_button_press_event_t *event, uint32_t new_x, uint32_t new_y) { /* Reposition the client correctly while moving */ client->rect.x = old_rect->x + (new_x - event->root_x); client->rect.y = old_rect->y + (new_y - event->root_y); reposition_client(conn, client); /* Because reposition_client does not send a faked configure event (only resize does), * we need to initiate that on our own */ fake_absolute_configure_notify(conn, client); /* fake_absolute_configure_notify flushes */ } /* * Called when the user clicked on the titlebar of a floating window. * Calls the drag_pointer function with the drag_window callback * */ void floating_drag_window(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) { LOG("floating_drag_window\n"); drag_pointer(conn, client, event, BORDER_TOP /* irrelevant */, drag_window_callback); } /* * This function grabs your pointer and lets you drag stuff around (borders). * Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received * and the given callback will be called with the parameters specified (client, * border on which the click originally was), the original rect of the client, * the event and the new coordinates (x, y). * */ static void drag_pointer(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event, border_t border, callback_t callback) { xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root; uint32_t new_x, new_y; Rect old_rect; memcpy(&old_rect, &(client->rect), sizeof(Rect)); /* Grab the pointer */ /* TODO: returncode */ xcb_grab_pointer(conn, false, /* get all pointer events specified by the following mask */ root, /* grab the root window */ XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */ XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */ XCB_GRAB_MODE_ASYNC, /* keyboard mode */ XCB_NONE, /* confine_to = in which window should the cursor stay */ XCB_NONE, /* don’t display a special cursor */ XCB_CURRENT_TIME); /* Go into our own event loop */ xcb_flush(conn); xcb_generic_event_t *inside_event; /* I’ve always wanted to have my own eventhandler… */ while ((inside_event = xcb_wait_for_event(conn))) { /* Same as get_event_handler in xcb */ int nr = inside_event->response_type; if (nr == 0) { /* An error occured */ handle_event(NULL, conn, inside_event); free(inside_event); continue; } assert(nr < 256); nr &= XCB_EVENT_RESPONSE_TYPE_MASK; assert(nr >= 2); /* Check if we need to escape this loop */ if (nr == XCB_BUTTON_RELEASE) break; switch (nr) { case XCB_MOTION_NOTIFY: new_x = ((xcb_motion_notify_event_t*)inside_event)->root_x; new_y = ((xcb_motion_notify_event_t*)inside_event)->root_y; callback(conn, client, border, &old_rect, event, new_x, new_y); break; default: LOG("Passing to original handler\n"); /* Use original handler */ xcb_event_handle(&evenths, inside_event); break; } free(inside_event); } xcb_ungrab_pointer(conn, XCB_CURRENT_TIME); xcb_flush(conn); } /* * Changes focus in the given direction for floating clients. * * Changing to the left/right means going to the previous/next floating client, * changing to top/bottom means cycling through the Z-index. * */ void floating_focus_direction(xcb_connection_t *conn, Client *currently_focused, direction_t direction) { LOG("floating focus\n"); if (direction == D_LEFT || direction == D_RIGHT) { /* Go to the next/previous floating client */ Client *client; while ((client = (direction == D_LEFT ? TAILQ_PREV(currently_focused, floating_clients_head, floating_clients) : TAILQ_NEXT(currently_focused, floating_clients))) != TAILQ_END(&(currently_focused->workspace->floating_clients))) { if (!client->floating) continue; set_focus(conn, client, true); return; } } } /* * Moves the client 10px to the specified direction. * */ void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) { LOG("floating move\n"); switch (direction) { case D_LEFT: if (currently_focused->rect.x < 10) return; currently_focused->rect.x -= 10; break; case D_RIGHT: currently_focused->rect.x += 10; break; case D_UP: if (currently_focused->rect.y < 10) return; currently_focused->rect.y -= 10; break; case D_DOWN: currently_focused->rect.y += 10; break; /* to make static analyzers happy */ default: break; } reposition_client(conn, currently_focused); /* Because reposition_client does not send a faked configure event (only resize does), * we need to initiate that on our own */ fake_absolute_configure_notify(conn, currently_focused); /* fake_absolute_configure_notify flushes */ }