/* * 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 #include #include "i3.h" #include "debug.h" #include "table.h" #include "layout.h" #include "commands.h" #include "data.h" #include "xcb.h" #include "util.h" #include "xinerama.h" #include "config.h" #include "queue.h" #include "resize.h" #include "client.h" #include "manage.h" #include "floating.h" /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it, since it’d trigger an infinite loop of switching between the different windows when changing workspaces */ static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events; static void add_ignore_event(const int sequence) { struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event)); event->sequence = sequence; event->added = time(NULL); LOG("Adding sequence %d to ignorelist\n", sequence); SLIST_INSERT_HEAD(&ignore_events, event, ignore_events); } /* * Checks if the given sequence is ignored and returns true if so. * */ static bool event_is_ignored(const int sequence) { struct Ignore_Event *event; time_t now = time(NULL); for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) { if ((now - event->added) > 5) { struct Ignore_Event *save = event; event = SLIST_NEXT(event, ignore_events); SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events); free(save); } else event = SLIST_NEXT(event, ignore_events); } SLIST_FOREACH(event, &ignore_events, ignore_events) { if (event->sequence == sequence) { LOG("Ignoring event (sequence %d)\n", sequence); SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events); free(event); return true; } } return false; } /* * Due to bindings like Mode_switch + , we need to bind some keys in XCB_GRAB_MODE_SYNC. * Therefore, we just replay all key presses. * */ int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) { LOG("got key release, just passing\n"); xcb_allow_events(conn, XCB_ALLOW_REPLAY_KEYBOARD, event->time); xcb_flush(conn); return 1; } /* * There was a key press. We compare this key code with our bindings table and pass * the bound action to parse_command(). * */ int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) { LOG("Keypress %d, state raw = %d\n", event->detail, event->state); /* Remove the numlock bit, all other bits are modifiers we can bind to */ uint16_t state_filtered = event->state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK); LOG("(removed numlock, state = %d)\n", state_filtered); /* Only use the lower 8 bits of the state (modifier masks) so that mouse * button masks are filtered out */ state_filtered &= 0xFF; LOG("(removed upper 8 bits, state = %d)\n", state_filtered); /* We need to get the keysym group (There are group 1 to group 4, each holding two keysyms (without shift and with shift) using Xkb because X fails to provide them reliably (it works in Xephyr, it does not in real X) */ XkbStateRec state; if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2) state_filtered |= BIND_MODE_SWITCH; LOG("(checked mode_switch, state %d)\n", state_filtered); /* Find the binding */ Binding *bind; TAILQ_FOREACH(bind, &bindings, bindings) if (bind->keycode == event->detail && bind->mods == state_filtered) break; /* No match? Then it was an actively grabbed key, that is with Mode_switch, and the user did not press Mode_switch, so just pass it… */ if (bind == TAILQ_END(&bindings)) { xcb_allow_events(conn, ReplayKeyboard, event->time); xcb_flush(conn); return 1; } parse_command(conn, bind->command); if (state_filtered & BIND_MODE_SWITCH) { LOG("Mode_switch -> allow_events(SyncKeyboard)\n"); xcb_allow_events(conn, SyncKeyboard, event->time); xcb_flush(conn); } return 1; } /* * Called with coordinates of an enter_notify event or motion_notify event * to check if the user crossed virtual screen boundaries and adjust the * current workspace, if so. * */ static void check_crossing_screen_boundary(uint32_t x, uint32_t y) { i3Screen *screen; if ((screen = get_screen_containing(x, y)) == NULL) { LOG("ERROR: No such screen\n"); return; } if (screen == c_ws->screen) return; c_ws->current_row = current_row; c_ws->current_col = current_col; c_ws = &workspaces[screen->current_workspace]; current_row = c_ws->current_row; current_col = c_ws->current_col; LOG("We're now on virtual screen number %d\n", screen->num); } /* * When the user moves the mouse pointer onto a window, this callback gets called. * */ int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) { LOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n", event->event, event->mode, event->detail, event->sequence); if (event->mode != XCB_NOTIFY_MODE_NORMAL) { LOG("This was not a normal notify, ignoring\n"); return 1; } /* Some events are not interesting, because they were not generated actively by the user, but by reconfiguration of windows */ if (event_is_ignored(event->sequence)) return 1; /* This was either a focus for a client’s parent (= titlebar)… */ Client *client = table_get(&by_parent, event->event); /* …or the client itself */ if (client == NULL) client = table_get(&by_child, event->event); /* Check for stack windows */ if (client == NULL) { struct Stack_Window *stack_win; SLIST_FOREACH(stack_win, &stack_wins, stack_windows) if (stack_win->window == event->event) { client = stack_win->container->currently_focused; break; } } /* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */ if (client == NULL) { LOG("Getting screen at %d x %d\n", event->root_x, event->root_y); check_crossing_screen_boundary(event->root_x, event->root_y); return 1; } /* Do plausibility checks: This event may be useless for us if it occurs on a window which is in a stacked container but not the focused one */ if (client->container != NULL && client->container->mode == MODE_STACK && client->container->currently_focused != client) { LOG("Plausibility check says: no\n"); return 1; } if (client->workspace != c_ws && client->workspace->screen == c_ws->screen) { /* This can happen when a client gets assigned to a different workspace than * the current one (see src/mainx.c:reparent_window). Shortly after it was created, * an enter_notify will follow. */ LOG("enter_notify for a client on a different workspace but the same screen, ignoring\n"); return 1; } set_focus(conn, client, false); return 1; } /* * When the user moves the mouse but does not change the active window * (e.g. when having no windows opened but moving mouse on the root screen * and crossing virtual screen boundaries), this callback gets called. * */ int handle_motion_notify(void *ignored, xcb_connection_t *conn, xcb_motion_notify_event_t *event) { LOG("pointer motion notify, getting screen at %d x %d\n", event->root_x, event->root_y); check_crossing_screen_boundary(event->root_x, event->root_y); return 1; } /* * Checks if the button press was on a stack window, handles focus setting and returns true * if so, or false otherwise. * */ static bool button_press_stackwin(xcb_connection_t *conn, xcb_button_press_event_t *event) { struct Stack_Window *stack_win; SLIST_FOREACH(stack_win, &stack_wins, stack_windows) { if (stack_win->window != event->event) continue; /* A stack window was clicked, we check if it was button4 or button5 which are scroll up / scroll down. */ if (event->detail == XCB_BUTTON_INDEX_4 || event->detail == XCB_BUTTON_INDEX_5) { direction_t direction = (event->detail == XCB_BUTTON_INDEX_4 ? D_UP : D_DOWN); focus_window_in_container(conn, CUR_CELL, direction); return true; } /* It was no scrolling, so we calculate the destination client by dividing the Y position of the event through the height of a window decoration and then set the focus to this client. */ i3Font *font = load_font(conn, config.font); int decoration_height = (font->height + 2 + 2); int destination = (event->event_y / decoration_height), c = 0; Client *client; LOG("Click on stack_win for client %d\n", destination); CIRCLEQ_FOREACH(client, &(stack_win->container->clients), clients) if (c++ == destination) { set_focus(conn, client, true); return true; } return true; } return false; } /* * Checks if the button press was on a bar, switches to the workspace and returns true * if so, or false otherwise. * */ static bool button_press_bar(xcb_connection_t *conn, xcb_button_press_event_t *event) { i3Screen *screen; TAILQ_FOREACH(screen, virtual_screens, screens) { if (screen->bar != event->event) continue; LOG("Click on a bar\n"); /* Check if the button was one of button4 or button5 (scroll up / scroll down) */ if (event->detail == XCB_BUTTON_INDEX_4 || event->detail == XCB_BUTTON_INDEX_5) { int add = (event->detail == XCB_BUTTON_INDEX_4 ? -1 : 1); for (int i = c_ws->num + add; (i >= 0) && (i < 10); i += add) if (workspaces[i].screen == screen) { show_workspace(conn, i+1); return true; } return true; } int drawn = 0; /* Because workspaces can be on different screens, we need to loop through all of them and decide to count it based on its ->screen */ for (int i = 0; i < 10; i++) { if (workspaces[i].screen != screen) continue; LOG("Checking if click was on workspace %d with drawn = %d, tw = %d\n", i, drawn, workspaces[i].text_width); if (event->event_x > (drawn + 1) && event->event_x <= (drawn + 1 + workspaces[i].text_width + 5 + 5)) { show_workspace(conn, i+1); return true; } drawn += workspaces[i].text_width + 5 + 5 + 2; } return true; } return false; } int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) { LOG("button press!\n"); LOG("state = %d\n", event->state); /* This was either a focus for a client’s parent (= titlebar)… */ Client *client = table_get(&by_child, event->event); bool border_click = false; if (client == NULL) { client = table_get(&by_parent, event->event); border_click = true; } /* See if this was a click with the configured modifier. If so, we need * to move around the client if it was floating. if not, we just process * as usual. */ if (config.floating_modifier != 0 && (event->state & config.floating_modifier) != 0) { if (client == NULL) { LOG("Not handling, floating_modifier was pressed and no client found\n"); return 1; } if (client_is_floating(client)) { floating_drag_window(conn, client, event); return 1; } } if (client == NULL) { /* The client was neither on a client’s titlebar nor on a client itself, maybe on a stack_window? */ if (button_press_stackwin(conn, event)) return 1; /* Or on a bar? */ if (button_press_bar(conn, event)) return 1; LOG("Could not handle this button press\n"); return 1; } /* Set focus in any case */ set_focus(conn, client, true); /* Let’s see if this was on the borders (= resize). If not, we’re done */ LOG("press button on x=%d, y=%d\n", event->event_x, event->event_y); resize_orientation_t orientation = O_VERTICAL; Container *con = client->container; int first, second; if (client->dock) { LOG("dock. done.\n"); xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time); xcb_flush(conn); return 1; } LOG("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width); /* Some clients (xfontsel for example) seem to pass clicks on their * window to the parent window, thus we receive an event here which in * reality is a border_click. Check for the position and fix state. */ if (border_click && event->event_x >= client->child_rect.x && event->event_x <= (client->child_rect.x + client->child_rect.width) && event->event_y >= client->child_rect.y && event->event_y <= (client->child_rect.y + client->child_rect.height)) { LOG("Fixing border_click = false because of click in child\n"); border_click = false; } if (!border_click) { LOG("client. done.\n"); xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time); /* Floating clients should be raised on click */ if (client_is_floating(client)) xcb_raise_window(conn, client->frame); xcb_flush(conn); return 1; } /* Don’t handle events inside the titlebar, only borders are interesting */ i3Font *font = load_font(conn, config.font); if (event->event_y >= 2 && event->event_y <= (font->height + 2 + 2)) { LOG("click on titlebar\n"); /* Floating clients can be dragged by grabbing their titlebar */ if (client_is_floating(client)) { /* Firstly, we raise it. Maybe the user just wanted to raise it without grabbing */ xcb_raise_window(conn, client->frame); xcb_flush(conn); floating_drag_window(conn, client, event); } return 1; } if (client_is_floating(client)) return floating_border_click(conn, client, event); if (event->event_y < 2) { /* This was a press on the top border */ if (con->row == 0) return 1; first = con->row - 1; second = con->row; orientation = O_HORIZONTAL; } else if (event->event_y >= (client->rect.height - 2)) { /* …bottom border */ first = con->row + (con->rowspan - 1); if (!cell_exists(con->col, first) || (first == (con->workspace->rows-1))) return 1; second = first + 1; orientation = O_HORIZONTAL; } else if (event->event_x <= 2) { /* …left border */ if (con->col == 0) return 1; first = con->col - 1; second = con->col; } else if (event->event_x > 2) { /* …right border */ first = con->col + (con->colspan - 1); LOG("column %d\n", first); if (!cell_exists(first, con->row) || (first == (con->workspace->cols-1))) return 1; second = first + 1; } return resize_graphical_handler(conn, con->workspace, first, second, orientation, event); } /* * A new window appeared on the screen (=was mapped), so let’s manage it. * */ int handle_map_request(void *prophs, xcb_connection_t *conn, xcb_map_request_event_t *event) { xcb_get_window_attributes_cookie_t cookie; cookie = xcb_get_window_attributes_unchecked(conn, event->window); LOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence); add_ignore_event(event->sequence); manage_window(prophs, conn, event->window, cookie, false); return 1; } /* * Configure requests are received when the application wants to resize windows on their own. * * We generate a synthethic configure notify event to signalize the client its "new" position. * */ int handle_configure_request(void *prophs, xcb_connection_t *conn, xcb_configure_request_event_t *event) { LOG("configure-request, serial %d\n", event->sequence); LOG("event->window = %08x\n", event->window); LOG("application wants to be at %dx%d with %dx%d\n", event->x, event->y, event->width, event->height); Client *client = table_get(&by_child, event->window); if (client == NULL) { LOG("This client is not mapped, so we don't care and just tell the client that he will get its size\n"); uint32_t mask = 0; uint32_t values[7]; int c = 0; #define COPY_MASK_MEMBER(mask_member, event_member) do { \ if (event->value_mask & mask_member) { \ mask |= mask_member; \ values[c++] = event->event_member; \ } \ } while (0) COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x); COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y); COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width); COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height); COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width); COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling); COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode); xcb_configure_window(conn, event->window, mask, values); xcb_flush(conn); return 1; } if (client->fullscreen) { LOG("Client is in fullscreen mode\n"); Rect child_rect = client->workspace->rect; child_rect.x = child_rect.y = 0; fake_configure_notify(conn, child_rect, client->child); return 1; } /* Floating clients can be reconfigured */ if (client_is_floating(client)) { i3Font *font = load_font(conn, config.font); if (event->value_mask & XCB_CONFIG_WINDOW_X) client->rect.x = event->x; if (event->value_mask & XCB_CONFIG_WINDOW_Y) client->rect.y = event->y; if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) client->rect.width = event->width + 2 + 2; if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) client->rect.height = event->height + (font->height + 2 + 2) + 2; LOG("Accepted new position/size for floating client: (%d, %d) size %d x %d\n", client->rect.x, client->rect.y, client->rect.width, client->rect.height); /* Push the new position/size to X11 */ reposition_client(conn, client); resize_client(conn, client); xcb_flush(conn); return 1; } if (client->fullscreen) { LOG("Client is in fullscreen mode\n"); Rect child_rect = client->container->workspace->rect; child_rect.x = child_rect.y = 0; fake_configure_notify(conn, child_rect, client->child); return 1; } fake_absolute_configure_notify(conn, client); return 1; } /* * Configuration notifies are only handled because we need to set up ignore for the following * enter notify events * */ int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) { xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root; LOG("handle_configure_event for window %08x\n", event->window); LOG("event->type = %d, \n", event->response_type); LOG("event->x = %d, ->y = %d, ->width = %d, ->height = %d\n", event->x, event->y, event->width, event->height); /* We ignore this sequence twice because events for child and frame should be ignored */ add_ignore_event(event->sequence); add_ignore_event(event->sequence); if (event->event == root) { LOG("reconfigure of the root window, need to xinerama\n"); /* FIXME: Somehow, this is occuring too often. Therefore, we check for 0/0, but is there a better way? */ if (event->x == 0 && event->y == 0) xinerama_requery_screens(conn); return 1; } return 1; } /* * Our window decorations were unmapped. That means, the window will be killed now, * so we better clean up before. * */ int handle_unmap_notify_event(void *data, xcb_connection_t *conn, xcb_unmap_notify_event_t *event) { xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root; add_ignore_event(event->sequence); Client *client = table_get(&by_child, event->window); /* First, we need to check if the client is awaiting an unmap-request which was generated by us reparenting the window. In that case, we just ignore it. */ if (client != NULL && client->awaiting_useless_unmap) { LOG("Dropping this unmap request, it was generated by reparenting\n"); client->awaiting_useless_unmap = false; return 1; } LOG("event->window = %08x, event->event = %08x\n", event->window, event->event); LOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event); if (client == NULL) { LOG("not a managed window. Ignoring.\n"); /* This was most likely the destroyed frame of a client which is * currently being unmapped, so we add this sequence (again!) to * the ignore list (enter_notify events will get sent for both, * the child and its frame). */ add_ignore_event(event->sequence); return 0; } client = table_remove(&by_child, event->window); /* If this was the fullscreen client, we need to unset it */ if (client->fullscreen) client->workspace->fullscreen_client = NULL; /* Clients without a container are either floating or dock windows */ if (client->container != NULL) { Container *con = client->container; /* Remove the client from the list of clients */ client_remove_from_container(conn, client, con, true); /* Set focus to the last focused client in this container */ con->currently_focused = get_last_focused_client(conn, con, NULL); /* Only if this is the active container, we need to really change focus */ if ((con->currently_focused != NULL) && ((con == CUR_CELL) || client->fullscreen)) set_focus(conn, con->currently_focused, true); } else if (client_is_floating(client)) { LOG("Removing from floating clients\n"); TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients); SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients); } if (client->dock) { LOG("Removing from dock clients\n"); SLIST_REMOVE(&(client->workspace->screen->dock_clients), client, Client, dock_clients); } LOG("child of 0x%08x.\n", client->frame); xcb_reparent_window(conn, client->child, root, 0, 0); xcb_destroy_window(conn, client->frame); xcb_flush(conn); table_remove(&by_parent, client->frame); if (client->container != NULL) { Workspace *workspace = client->container->workspace; cleanup_table(conn, workspace); fix_colrowspan(conn, workspace); } /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */ bool workspace_empty = SLIST_EMPTY(&(client->workspace->focus_stack)); bool workspace_active = false; Client *to_focus = (!workspace_empty ? SLIST_FIRST(&(client->workspace->focus_stack)) : NULL); /* If this workspace is currently active, we don’t delete it */ i3Screen *screen; TAILQ_FOREACH(screen, virtual_screens, screens) if (screen->current_workspace == client->workspace->num) { workspace_active = true; workspace_empty = false; break; } if (workspace_empty) { LOG("setting ws to NULL for workspace %d (%p)\n", client->workspace->num, client->workspace); client->workspace->screen = NULL; } FREE(client->window_class); FREE(client->name); free(client); render_layout(conn); /* Ensure the focus is set to the next client in the focus stack */ if (workspace_active && to_focus != NULL) set_focus(conn, to_focus, true); return 1; } /* * Called when a window changes its title * */ int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { LOG("window's name changed.\n"); if (prop == NULL || xcb_get_property_value_length(prop) == 0) { LOG("_NET_WM_NAME not specified, not changing\n"); return 1; } Client *client = table_get(&by_child, window); if (client == NULL) return 1; /* Save the old pointer to make the update atomic */ char *new_name; int new_len; asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)); /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */ char *ucs2_name = convert_utf8_to_ucs2(new_name, &new_len); LOG("Name should change to \"%s\"\n", new_name); free(new_name); /* Check if they are the same and don’t update if so. Note the use of new_len * 2 to check all bytes as each glyph takes 2 bytes. Also note the use of memcmp() instead of strncmp() because the latter stops on nullbytes, but UCS-2 uses nullbytes to fill up glyphs which only use one byte. */ if ((new_len == client->name_len) && (client->name != NULL) && (memcmp(client->name, ucs2_name, new_len * 2) == 0)) { LOG("Name did not change, not updating\n"); free(ucs2_name); return 1; } char *old_name = client->name; client->name = ucs2_name; client->name_len = new_len; client->uses_net_wm_name = true; FREE(old_name); /* If the client is a dock window, we don’t need to render anything */ if (client->dock) return 1; if (client->container != NULL && client->container->mode == MODE_STACK) render_container(conn, client->container); else decorate_window(conn, client, client->frame, client->titlegc, 0); xcb_flush(conn); return 1; } /* * We handle legacy window names (titles) which are in COMPOUND_TEXT encoding. However, we * just pass them along, so when containing non-ASCII characters, those will be rendering * incorrectly. In order to correctly render unicode window titles in i3, an application * has to set _NET_WM_NAME, which is in UTF-8 encoding. * * On every update, a message is put out to the user, so he may improve the situation and * update applications which display filenames in their title to correctly use * _NET_WM_NAME and therefore support unicode. * */ int handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { LOG("window's name changed (legacy).\n"); if (prop == NULL || xcb_get_property_value_length(prop) == 0) { LOG("prop == NULL\n"); return 1; } Client *client = table_get(&by_child, window); if (client == NULL) return 1; if (client->uses_net_wm_name) { LOG("This client is capable of _NET_WM_NAME, ignoring legacy name\n"); return 1; } /* Save the old pointer to make the update atomic */ char *new_name; if (asprintf(&new_name, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) { perror("Could not get old name"); LOG("Could not get old name\n"); return 1; } /* Convert it to UCS-2 here for not having to convert it later every time we want to pass it to X */ LOG("Name should change to \"%s\"\n", new_name); /* Check if they are the same and don’t update if so. */ if (client->name != NULL && strlen(new_name) == strlen(client->name) && strcmp(client->name, new_name) == 0) { LOG("Name did not change, not updating\n"); free(new_name); return 1; } LOG("Using legacy window title. Note that in order to get Unicode window titles in i3," "the application has to set _NET_WM_NAME which is in UTF-8 encoding.\n"); char *old_name = client->name; client->name = new_name; client->name_len = -1; if (old_name != NULL) free(old_name); /* If the client is a dock window, we don’t need to render anything */ if (client->dock) return 1; if (client->container != NULL && client->container->mode == MODE_STACK) render_container(conn, client->container); else decorate_window(conn, client, client->frame, client->titlegc, 0); xcb_flush(conn); return 1; } /* * Updates the client’s WM_CLASS property * */ int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) { LOG("window class changed\n"); if (prop == NULL || xcb_get_property_value_length(prop) == 0) { LOG("prop == NULL\n"); return 1; } Client *client = table_get(&by_child, window); if (client == NULL) return 1; char *new_class; if (asprintf(&new_class, "%.*s", xcb_get_property_value_length(prop), (char*)xcb_get_property_value(prop)) == -1) { perror("Could not get window class"); LOG("Could not get window class\n"); return 1; } LOG("changed to %s\n", new_class); char *old_class = client->window_class; client->window_class = new_class; FREE(old_class); if (!client->initialized) { LOG("Client is not yet initialized, not putting it to floating\n"); return 1; } if (strcmp(new_class, "tools") == 0 || strcmp(new_class, "Dialog") == 0) { LOG("tool/dialog window, should we put it floating?\n"); if (client->floating == FLOATING_AUTO_OFF) toggle_floating_mode(conn, client, true); } return 1; } /* * Expose event means we should redraw our windows (= title bar) * */ int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) { /* event->count is the number of minimum remaining expose events for this window, so we skip all events but the last one */ if (event->count != 0) return 1; LOG("window = %08x\n", event->window); Client *client = table_get(&by_parent, event->window); if (client == NULL) { /* There was no client in the table, so this is probably an expose event for one of our stack_windows. */ struct Stack_Window *stack_win; SLIST_FOREACH(stack_win, &stack_wins, stack_windows) if (stack_win->window == event->window) { render_container(conn, stack_win->container); return 1; } /* …or one of the bars? */ i3Screen *screen; TAILQ_FOREACH(screen, virtual_screens, screens) if (screen->bar == event->window) render_layout(conn); return 1; } LOG("got client %s\n", client->name); if (client->dock) { LOG("this is a dock\n"); return 1; } if (client->container == NULL || client->container->mode != MODE_STACK) decorate_window(conn, client, client->frame, client->titlegc, 0); else { uint32_t background_color; /* Distinguish if the window is currently focused… */ if (CUR_CELL->currently_focused == client) background_color = config.client.focused.background; /* …or if it is the focused window in a not focused container */ else background_color = config.client.focused_inactive.background; /* Set foreground color to current focused color, line width to 2 */ uint32_t values[] = {background_color, 2}; xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values); /* Draw the border, the ±1 is for line width = 2 */ xcb_point_t points[] = {{1, 0}, /* left upper edge */ {1, client->rect.height-1}, /* left bottom edge */ {client->rect.width-1, client->rect.height-1}, /* right bottom edge */ {client->rect.width-1, 0}}; /* right upper edge */ xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 4, points); /* Draw a black background */ xcb_change_gc_single(conn, client->titlegc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000")); xcb_rectangle_t crect = {2, 0, client->rect.width - (2 + 2), client->rect.height - 2}; xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect); } xcb_flush(conn); return 1; } /* * Handle client messages (EWMH) * */ int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) { LOG("client_message\n"); if (event->type == atoms[_NET_WM_STATE]) { if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN]) return 0; LOG("fullscreen\n"); Client *client = table_get(&by_child, event->window); if (client == NULL) return 0; /* Check if the fullscreen state should be toggled */ if ((client->fullscreen && (event->data.data32[0] == _NET_WM_STATE_REMOVE || event->data.data32[0] == _NET_WM_STATE_TOGGLE)) || (!client->fullscreen && (event->data.data32[0] == _NET_WM_STATE_ADD || event->data.data32[0] == _NET_WM_STATE_TOGGLE))) client_toggle_fullscreen(conn, client); } else { LOG("unhandled clientmessage\n"); return 0; } return 1; } int handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *property) { /* TODO: Implement this one. To do this, implement a little test program which sleep(1)s before changing this property. */ LOG("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n"); return 0; } /* * Handles the size hints set by a window, but currently only the part necessary for displaying * clients proportionally inside their frames (mplayer for example) * * See ICCCM 4.1.2.3 for more details * */ int handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, xcb_atom_t name, xcb_get_property_reply_t *reply) { LOG("handle_normal_hints\n"); Client *client = table_get(&by_child, window); if (client == NULL) { LOG("No such client\n"); return 1; } xcb_size_hints_t size_hints; LOG("client is %08x / child %08x\n", client->frame, client->child); /* If the hints were already in this event, use them, if not, request them */ if (reply != NULL) xcb_get_wm_size_hints_from_reply(&size_hints, reply); else xcb_get_wm_normal_hints_reply(conn, xcb_get_wm_normal_hints_unchecked(conn, client->child), &size_hints, NULL); if ((size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE)) { LOG("min size set\n"); LOG("gots min_width = %d, min_height = %d\n", size_hints.min_width, size_hints.min_height); } /* If no aspect ratio was set or if it was invalid, we ignore the hints */ if (!(size_hints.flags & XCB_SIZE_HINT_P_ASPECT) || (size_hints.min_aspect_num <= 0) || (size_hints.min_aspect_den <= 0)) { LOG("No aspect ratio set, ignoring\n"); return 1; } LOG("window is %08x / %s\n", client->child, client->name); int base_width = 0, base_height = 0; /* base_width/height are the desired size of the window. We check if either the program-specified size or the program-specified min-size is available */ if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) { base_width = size_hints.base_width; base_height = size_hints.base_height; } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) { base_width = size_hints.min_width; base_height = size_hints.min_height; } double width = client->rect.width - base_width; double height = client->rect.height - base_height; /* Convert numerator/denominator to a double */ double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den; double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den; LOG("min_aspect = %f, max_aspect = %f\n", min_aspect, max_aspect); LOG("width = %f, height = %f\n", width, height); /* Sanity checks, this is user-input, in a way */ if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0) return 1; /* Check if we need to set proportional_* variables using the correct ratio */ if ((width / height) < min_aspect) { client->proportional_width = width; client->proportional_height = width / min_aspect; } else if ((width / height) > max_aspect) { client->proportional_width = width; client->proportional_height = width / max_aspect; } else return 1; client->force_reconfigure = true; if (client->container != NULL) { render_container(conn, client->container); xcb_flush(conn); } return 1; } /* * Handles the transient for hints set by a window, signalizing that this window is a popup window * for some other window. * * See ICCCM 4.1.2.6 for more details * */ int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, xcb_atom_t name, xcb_get_property_reply_t *reply) { LOG("Transient hint!\n"); Client *client = table_get(&by_child, window); if (client == NULL) { LOG("No such client\n"); return 1; } xcb_window_t transient_for; if (reply != NULL) { if (!xcb_get_wm_transient_for_from_reply(&transient_for, reply)) { LOG("Not transient for any window\n"); return 1; } } else { if (!xcb_get_wm_transient_for_reply(conn, xcb_get_wm_transient_for_unchecked(conn, window), &transient_for, NULL)) { LOG("Not transient for any window\n"); return 1; } } if (client->floating == FLOATING_AUTO_OFF) { LOG("This is a popup window, putting into floating\n"); toggle_floating_mode(conn, client, true); } return 1; } /* * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a * toolwindow (or similar) and to which window it belongs (logical parent). * */ int handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, xcb_atom_t name, xcb_get_property_reply_t *prop) { LOG("client leader changed\n"); if (prop == NULL) { prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn, false, window, WM_CLIENT_LEADER, WINDOW, 0, 32), NULL); } Client *client = table_get(&by_child, window); if (client == NULL) return 1; xcb_window_t *leader = xcb_get_property_value(prop); if (leader == NULL) return 1; LOG("changed to %08x\n", *leader); client->leader = *leader; return 1; }