/* * vim:ts=8:expandtab * * i3 - an improved dynamic tiling window manager * * © 2009-2010 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" #include "floating.h" #include "workspace.h" #include "log.h" /* * 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 (client->dock) { DLOG("Not putting dock client into floating mode\n"); return; } if (con == NULL) { DLOG("This client is already in floating (container == NULL), re-inserting\n"); Client *next_tiling; Workspace *ws = client->workspace; SLIST_FOREACH(next_tiling, &(ws->focus_stack), focus_clients) if (!client_is_floating(next_tiling)) break; /* If there are no tiling clients on this workspace, there can only be one * container: the first one */ if (next_tiling == TAILQ_END(&(ws->focus_stack))) con = ws->table[0][0]; else con = next_tiling->container; /* Remove the client from the list of floating clients */ TAILQ_REMOVE(&(ws->floating_clients), client, floating_clients); DLOG("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); DLOG("Re-inserted the window.\n"); con->currently_focused = client; client_set_below_floating(conn, client); render_container(conn, con); xcb_flush(conn); return; } DLOG("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) { DLOG("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; DLOG("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 */ DLOG("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); } /* * Removes the floating client from its workspace and attaches it to the new workspace. * This is centralized here because it may happen if you move it via keyboard and * if you move it using your mouse. * */ void floating_assign_to_workspace(Client *client, Workspace *new_workspace) { /* Remove from focus stack and list of floating clients */ SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients); TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients); if (client->workspace->fullscreen_client == client) client->workspace->fullscreen_client = NULL; /* Insert into destination focus stack and list of floating clients */ client->workspace = new_workspace; SLIST_INSERT_HEAD(&(client->workspace->focus_stack), client, focus_clients); TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients); if (client->fullscreen) client->workspace->fullscreen_client = client; } /* * This is an ugly data structure which we need because there is no standard * way of having nested functions (only available as a gcc extension at the * moment, clang doesn’t support it) or blocks (only available as a clang * extension and only on Mac OS X systems at the moment). * */ struct resize_callback_params { border_t border; xcb_button_press_event_t *event; }; DRAGGING_CB(resize_callback) { struct resize_callback_params *params = extra; xcb_button_press_event_t *event = params->event; switch (params->border) { case BORDER_RIGHT: { int new_width = old_rect->width + (new_x - event->root_x); if ((new_width < 0) || (new_width < client_min_width(client) && client->rect.width >= new_width)) return; client->rect.width = new_width; break; } case BORDER_BOTTOM: { int new_height = old_rect->height + (new_y - event->root_y); if ((new_height < 0) || (new_height < client_min_height(client) && client->rect.height >= new_height)) return; client->rect.height = old_rect->height + (new_y - event->root_y); break; } case BORDER_TOP: { int new_height = old_rect->height + (event->root_y - new_y); if ((new_height < 0) || (new_height < client_min_height(client) && client->rect.height >= new_height)) return; client->rect.y = old_rect->y + (new_y - event->root_y); client->rect.height = new_height; break; } case BORDER_LEFT: { int new_width = old_rect->width + (event->root_x - new_x); if ((new_width < 0) || (new_width < client_min_width(client) && client->rect.width >= new_width)) return; client->rect.x = old_rect->x + (new_x - event->root_x); client->rect.width = new_width; 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) { DLOG("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 >= (client->rect.width - 2)) border = BORDER_RIGHT; else { DLOG("Not on any border, not doing anything.\n"); return 1; } DLOG("border = %d\n", border); struct resize_callback_params params = { border, event }; drag_pointer(conn, client, event, XCB_NONE, border, resize_callback, ¶ms); return 1; } DRAGGING_CB(drag_window_callback) { struct xcb_button_press_event_t *event = extra; /* 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) { DLOG("floating_drag_window\n"); drag_pointer(conn, client, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback, event); } /* * This is an ugly data structure which we need because there is no standard * way of having nested functions (only available as a gcc extension at the * moment, clang doesn’t support it) or blocks (only available as a clang * extension and only on Mac OS X systems at the moment). * */ struct resize_window_callback_params { border_t corner; bool proportional; xcb_button_press_event_t *event; }; DRAGGING_CB(resize_window_callback) { struct resize_window_callback_params *params = extra; xcb_button_press_event_t *event = params->event; border_t corner = params->corner; int32_t dest_x = client->rect.x; int32_t dest_y = client->rect.y; uint32_t dest_width; uint32_t dest_height; double ratio = (double) old_rect->width / old_rect->height; /* First guess: We resize by exactly the amount the mouse moved, * taking into account in which corner the client was grabbed */ if (corner & BORDER_LEFT) dest_width = old_rect->width - (new_x - event->root_x); else dest_width = old_rect->width + (new_x - event->root_x); if (corner & BORDER_TOP) dest_height = old_rect->height - (new_y - event->root_y); else dest_height = old_rect->height + (new_y - event->root_y); /* Obey minimum window size */ dest_width = max(dest_width, client_min_width(client)); dest_height = max(dest_height, client_min_height(client)); /* User wants to keep proportions, so we may have to adjust our values */ if (params->proportional) { dest_width = max(dest_width, (int) (dest_height * ratio)); dest_height = max(dest_height, (int) (dest_width / ratio)); } /* If not the lower right corner is grabbed, we must also reposition * the client by exactly the amount we resized it */ if (corner & BORDER_LEFT) dest_x = old_rect->x + (old_rect->width - dest_width); if (corner & BORDER_TOP) dest_y = old_rect->y + (old_rect->height - dest_height); client->rect = (Rect) { dest_x, dest_y, dest_width, dest_height }; /* resize_client flushes */ resize_client(conn, client); } /* * Called when the user clicked on a floating window while holding the * floating_modifier and the right mouse button. * Calls the drag_pointer function with the resize_window callback * */ void floating_resize_window(xcb_connection_t *conn, Client *client, bool proportional, xcb_button_press_event_t *event) { DLOG("floating_resize_window\n"); /* corner saves the nearest corner to the original click. It contains * a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */ border_t corner = 0; if (event->event_x <= (client->rect.width / 2)) corner |= BORDER_LEFT; else corner |= BORDER_RIGHT; if (event->event_y <= (client->rect.height / 2)) corner |= BORDER_TOP; else corner |= BORDER_RIGHT; struct resize_window_callback_params params = { corner, proportional, event }; drag_pointer(conn, client, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback, ¶ms); } /* * 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). * */ void drag_pointer(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event, xcb_window_t confine_to, border_t border, callback_t callback, void *extra) { xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root; uint32_t new_x, new_y; Rect old_rect; if (client != NULL) 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 */ confine_to, /* 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, *last_motion_notify = NULL; /* I’ve always wanted to have my own eventhandler… */ while ((inside_event = xcb_wait_for_event(conn))) { /* We now handle all events we can get using xcb_poll_for_event */ do { /* 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); switch (nr) { case XCB_BUTTON_RELEASE: goto done; case XCB_MOTION_NOTIFY: /* motion_notify events are saved for later */ FREE(last_motion_notify); last_motion_notify = inside_event; break; case XCB_UNMAP_NOTIFY: DLOG("Unmap-notify, aborting\n"); xcb_event_handle(&evenths, inside_event); goto done; default: DLOG("Passing to original handler\n"); /* Use original handler */ xcb_event_handle(&evenths, inside_event); break; } if (last_motion_notify != inside_event) free(inside_event); } while ((inside_event = xcb_poll_for_event(conn)) != NULL); if (last_motion_notify == NULL) continue; new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x; new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y; callback(conn, client, &old_rect, new_x, new_y, extra); FREE(last_motion_notify); } done: 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) { DLOG("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) { DLOG("floating move\n"); if (currently_focused->fullscreen) { DLOG("Cannot move fullscreen windows\n"); return; } Rect destination = currently_focused->rect; Rect *screen = &(currently_focused->workspace->output->rect); switch (direction) { case D_LEFT: destination.x -= 10; break; case D_RIGHT: destination.x += 10; break; case D_UP: destination.y -= 10; break; case D_DOWN: destination.y += 10; break; /* to make static analyzers happy */ default: break; } /* Prevent windows from vanishing completely */ if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x || (int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) || (int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y || (int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) { DLOG("boundary check failed, not moving\n"); return; } currently_focused->rect = destination; 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 */ } /* * Hides all floating clients (or show them if they are currently hidden) on * the specified workspace. * */ void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) { Client *client; workspace->floating_hidden = !workspace->floating_hidden; DLOG("floating_hidden is now: %d\n", workspace->floating_hidden); TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) { if (workspace->floating_hidden) client_unmap(conn, client); else client_map(conn, client); } /* If we just unmapped all floating windows we should ensure that the focus * is set correctly, that ist, to the first non-floating client in stack */ if (workspace->floating_hidden) SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) { if (client_is_floating(client)) continue; set_focus(conn, client, true); return; } xcb_flush(conn); }