/* * 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" /* 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\n", event->detail); /* 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) event->state |= 0x2; LOG("state %d\n", 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); /* 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 (event->state & 0x2) { LOG("Mode_switch -> allow_events(SyncKeyboard)\n"); xcb_allow_events(conn, SyncKeyboard, event->time); xcb_flush(conn); } return 1; } /* * 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 be 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); i3Screen *screen = get_screen_containing(event->root_x, event->root_y); if (screen == NULL) { LOG("ERROR: No such screen\n"); return 0; } 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); 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; } set_focus(conn, client, false); 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; } i3Font *font = load_font(conn, config.font); int workspace = event->event_x / (font->height + 6), c = 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) && (c++ == workspace)) { show_workspace(conn, i+1); return true; } return true; } return false; } int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) { LOG("button press!\n"); /* 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; } 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; } xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root; xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data; /* 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); Container *con = client->container, *first = NULL, *second = NULL; enum { O_HORIZONTAL, O_VERTICAL } orientation = O_VERTICAL; int new_position; if (con == NULL) { 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); if (!border_click) { LOG("client. done.\n"); xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time); 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"); return 1; } if (event->event_y < 2) { /* This was a press on the top border */ if (con->row == 0) return 1; first = con->workspace->table[con->col][con->row-1]; second = con; orientation = O_HORIZONTAL; } else if (event->event_y >= (client->rect.height - 2)) { /* …bottom border */ if (con->row == (con->workspace->rows-1)) return 1; first = con; second = con->workspace->table[con->col][con->row+1]; orientation = O_HORIZONTAL; } else if (event->event_x <= 2) { /* …left border */ if (con->col == 0) return 1; first = con->workspace->table[con->col-1][con->row]; second = con; } else if (event->event_x > 2) { /* …right border */ if (con->col == (con->workspace->cols-1)) return 1; first = con; second = con->workspace->table[con->col+1][con->row]; } /* FIXME: horizontal resizing causes empty spaces to exist */ if (orientation == O_HORIZONTAL) { LOG("Sorry, horizontal resizing is not yet activated due to creating layout bugs." "If you are brave, enable the code for yourself and try fixing it.\n"); return 1; } uint32_t mask = 0; uint32_t values[2]; mask = XCB_CW_OVERRIDE_REDIRECT; values[0] = 1; /* Open a new window, the resizebar. Grab the pointer and move the window around as the user moves the pointer. */ Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels}; xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, -1, mask, values); Rect helprect; if (orientation == O_VERTICAL) { helprect.x = event->root_x; helprect.y = 0; helprect.width = 2; helprect.height = root_screen->height_in_pixels; /* this has to be the cell’s height */ new_position = event->root_x; } else { helprect.x = 0; helprect.y = event->root_y; helprect.width = root_screen->width_in_pixels; /* this has to be the cell’s width */ helprect.height = 2; new_position = event->root_y; } mask = XCB_CW_BACK_PIXEL; values[0] = get_colorpixel(conn, "#4c7899"); mask |= XCB_CW_OVERRIDE_REDIRECT; values[1] = 1; xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT, (orientation == O_VERTICAL ? XCB_CURSOR_SB_V_DOUBLE_ARROW : XCB_CURSOR_SB_H_DOUBLE_ARROW), mask, values); xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin); xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, grabwin, XCB_NONE, XCB_CURRENT_TIME); 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: if (orientation == O_VERTICAL) { values[0] = new_position = ((xcb_motion_notify_event_t*)inside_event)->root_x; xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values); } else { values[0] = new_position = ((xcb_motion_notify_event_t*)inside_event)->root_y; xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values); } xcb_flush(conn); 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_destroy_window(conn, helpwin); xcb_destroy_window(conn, grabwin); xcb_flush(conn); Workspace *ws = con->workspace; if (orientation == O_VERTICAL) { LOG("Resize was from X = %d to X = %d\n", event->root_x, new_position); if (event->root_x == new_position) { LOG("Nothing changed, not updating anything\n"); return 1; } /* Save the old unoccupied space to re-evaluate the other containers (not first or second) later */ int old_unoccupied_x = get_unoccupied_x(ws, first->row); /* Convert 0 (for default width_factor) to actual numbers */ LOG("\n\n\n"); LOG("old_unoccupied_x = %d\n", old_unoccupied_x); LOG("Updating first\n"); /* Set the new width factor on all clients in the column of the first container */ for (int row = 0; row < ws->rows; row++) { Container *con = ws->table[first->col][row]; if (con->width_factor == 0) con->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width; else con->width_factor = ((con->width_factor * old_unoccupied_x) / ws->rect.width); LOG("Old con(%d,%d)->width_factor = %f\n", first->col, row, con->width_factor); con->width_factor *= (float)(con->width + (new_position - event->root_x)) / con->width; LOG("New con(%d,%d)->width_factor = %f\n", first->col, row, con->width_factor); } LOG("Updating second\n"); /* Set the new width factor on all clients in the column of the second container */ for (int row = 0; row < ws->rows; row++) { Container *con = ws->table[second->col][row]; if (con->width_factor == 0) con->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width; else con->width_factor = ((con->width_factor * old_unoccupied_x) / ws->rect.width); LOG("Old con(%d,%d)->width_factor = %f\n", second->col, row, con->width_factor); con->width_factor *= (float)(con->width - (new_position - event->root_x)) / con->width; LOG("New con(%d,%d)->width_factor = %f\n", second->col, row, con->width_factor); } LOG("new unoccupied_x = %d\n", get_unoccupied_x(ws, first->row)); LOG("old_unoccupied_x = %d\n", old_unoccupied_x); for (int col = 0; col < ws->cols; col++) { Container *con = ws->table[col][first->row]; if (con == first || con == second) continue; LOG("Updating other container (current width_factor = %f)\n", con->width_factor); con->width_factor = ((con->width_factor * old_unoccupied_x) / get_unoccupied_x(ws, first->row)); LOG("to %f\n", con->width_factor); } LOG("New first->width_factor = %f\n", first->width_factor); LOG("New second->width_factor = %f\n", second->width_factor); LOG("\n\n\n"); } else { LOG("Resize was from Y = %d to Y = %d\n", event->root_y, new_position); if (event->root_y == new_position) { LOG("Nothing changed, not updating anything\n"); return 1; } /* Convert 0 (for default height_factor) to actual numbers */ if (first->height_factor == 0) first->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height; if (second->height_factor == 0) second->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height; first->height_factor *= (float)(first->height + (new_position - event->root_y)) / first->height; second->height_factor *= (float)(second->height - (new_position - event->root_y)) / second->height; } render_layout(conn); return 1; } /* * 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; xcb_get_window_attributes_reply_t *reply; cookie = xcb_get_window_attributes_unchecked(conn, event->window); if ((reply = xcb_get_window_attributes_reply(conn, cookie, NULL)) == NULL) { LOG("Could not get window attributes\n"); return -1; } window_attributes_t wa = { TAG_VALUE }; LOG("override_redirect = %d\n", reply->override_redirect); wa.u.override_redirect = reply->override_redirect; LOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence); add_ignore_event(event->sequence); manage_window(prophs, conn, event->window, wa); 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"); Rect rect = {event->x, event->y, event->width, event->height}; fake_configure_notify(conn, rect, event->window); 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 (client->name != NULL) free(client->name); if (client->container != NULL) { Container *con = client->container; /* If this was the fullscreen client, we need to unset it */ if (client->fullscreen) con->workspace->fullscreen_client = NULL; /* Remove the client from the list of clients */ remove_client_from_container(conn, client, con); /* 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); } 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) { cleanup_table(conn, client->container->workspace); fix_colrowspan(conn, client->container->workspace); } /* Let’s see how many clients there are left on the workspace to delete it if it’s empty */ bool workspace_empty = true; FOR_TABLE(client->workspace) if (!CIRCLEQ_EMPTY(&(client->workspace->table[cols][rows]->clients))) { workspace_empty = false; break; } i3Screen *screen; TAILQ_FOREACH(screen, virtual_screens, screens) if (screen->current_workspace == client->workspace->num) { workspace_empty = false; break; } if (workspace_empty) client->workspace->screen = NULL; free(client); render_layout(conn); 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->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->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); 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->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 = get_colorpixel(conn, "#285577"); /* …or if it is the focused window in a not focused container */ else background_color = get_colorpixel(conn, "#555555"); /* 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))) 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; /* 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 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, min_width = 0, min_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; } if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) { min_width = size_hints.min_width; min_height = size_hints.min_height; } else if (size_hints.flags & XCB_SIZE_HINT_P_SIZE) { min_width = size_hints.base_width; min_height = size_hints.base_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; }