/* * vim:ts=8:expandtab * * i3 - an improved dynamic tiling window manager * * © 2009-2010 Michael Stapelberg and contributors * * See file LICENSE for license information. * */ #include #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 "randr.h" #include "config.h" #include "queue.h" #include "resize.h" #include "client.h" #include "manage.h" #include "floating.h" #include "workspace.h" #include "log.h" #include "container.h" #include "ipc.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); 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) { SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events); free(event); return true; } } return false; } /* * 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) { DLOG("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); DLOG("(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; DLOG("(removed upper 8 bits, state = %d)\n", state_filtered); if (xkb_current_group == XkbGroup2Index) state_filtered |= BIND_MODE_SWITCH; DLOG("(checked mode_switch, state %d)\n", state_filtered); /* Find the binding */ Binding *bind = get_binding(state_filtered, event->detail); /* No match? Then the user has Mode_switch enabled but does not have a * specific keybinding. Fall back to the default keybindings (without * Mode_switch). Makes it much more convenient for users of a hybrid * layout (like us, ru). */ if (bind == NULL) { state_filtered &= ~(BIND_MODE_SWITCH); DLOG("no match, new state_filtered = %d\n", state_filtered); if ((bind = get_binding(state_filtered, event->detail)) == NULL) { ELOG("Could not lookup key binding (modifiers %d, keycode %d)\n", state_filtered, event->detail); return 1; } } parse_command(conn, bind->command); 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) { Output *output; if ((output = get_output_containing(x, y)) == NULL) { ELOG("ERROR: No such screen\n"); return; } if (output == c_ws->output) return; c_ws->current_row = current_row; c_ws->current_col = current_col; c_ws = output->current_workspace; current_row = c_ws->current_row; current_col = c_ws->current_col; DLOG("We're now on output %p\n", output); /* While usually this function is only called when the user switches * to a different output using his mouse (and thus the output is * empty), it may be that the following race condition occurs: * 1) the user actives a new output (say VGA1). * 2) the cursor is sent to the first pixel of the new VGA1, thus * generating an enter_notify for the screen (the enter_notify * is not yet received by i3). * 3) i3 requeries screen configuration and maps a workspace onto the * new output. * 4) the enter_notify event arrives and c_ws is set to the new * workspace but the existing windows on the new workspace are not * focused. * * Therefore, we re-set the focus here to be sure it’s correct. */ Client *first_client = SLIST_FIRST(&(c_ws->focus_stack)); if (first_client != NULL) set_focus(global_conn, first_client, true); } /* * 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) { DLOG("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) { DLOG("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) { DLOG("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) { DLOG("Plausibility check says: no\n"); return 1; } if (client->workspace != c_ws && client->workspace->output == c_ws->output) { /* 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. */ DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n"); return 1; } if (!config.disable_focus_follows_mouse) 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) { /* Skip events where the pointer was over a child window, we are only * interested in events on the root window. */ if (event->child != 0) return 1; check_crossing_screen_boundary(event->root_x, event->root_y); return 1; } /* * Called when the keyboard mapping changes (for example by using Xmodmap), * we need to update our key bindings then (re-translate symbols). * */ int handle_mapping_notify(void *ignored, xcb_connection_t *conn, xcb_mapping_notify_event_t *event) { if (event->request != XCB_MAPPING_KEYBOARD && event->request != XCB_MAPPING_MODIFIER) return 0; DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n"); xcb_refresh_keyboard_mapping(keysyms, event); xcb_get_numlock_mask(conn); ungrab_all_keys(conn); translate_keysyms(); grab_all_keys(conn, false); return 0; } /* * 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); DLOG("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) { DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n", event->window, event->x, event->y, event->width, event->height); Client *client = table_get(&by_child, event->window); if (client == NULL) { 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) { DLOG("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); int mode = (client->container != NULL ? client->container->mode : MODE_DEFAULT); /* TODO: refactor this code. we need a function to translate * coordinates of child_rect/rect. */ if (event->value_mask & XCB_CONFIG_WINDOW_X) { if (mode == MODE_STACK || mode == MODE_TABBED) { client->rect.x = event->x - 2; } else { if (client->titlebar_position == TITLEBAR_OFF && client->borderless) client->rect.x = event->x; else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) client->rect.x = event->x - 1; else client->rect.x = event->x - 2; } } if (event->value_mask & XCB_CONFIG_WINDOW_Y) { if (mode == MODE_STACK || mode == MODE_TABBED) { client->rect.y = event->y - 2; } else { if (client->titlebar_position == TITLEBAR_OFF && client->borderless) client->rect.y = event->y; else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) client->rect.y = event->y - 1; else client->rect.y = event->y - font->height - 2 - 2; } } if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) { if (mode == MODE_STACK || mode == MODE_TABBED) { client->rect.width = event->width + 2 + 2; } else { if (client->titlebar_position == TITLEBAR_OFF && client->borderless) client->rect.width = event->width; else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) client->rect.width = event->width + (1 + 1); else client->rect.width = event->width + (2 + 2); } } if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) { if (mode == MODE_STACK || mode == MODE_TABBED) { client->rect.height = event->height + 2; } else { if (client->titlebar_position == TITLEBAR_OFF && client->borderless) client->rect.height = event->height; else if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) client->rect.height = event->height + (1 + 1); else client->rect.height = event->height + (font->height + 2 + 2) + 2; } } DLOG("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; } /* Dock clients can be reconfigured in their height */ if (client->dock) { DLOG("Reconfiguring height of this dock client\n"); if (!(event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)) { DLOG("Ignoring configure request, no height given\n"); return 1; } client->desired_height = event->height; render_workspace(conn, c_ws->output, c_ws); xcb_flush(conn); return 1; } if (client->fullscreen) { DLOG("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) { /* We ignore this sequence twice because events for child and frame should be ignored */ add_ignore_event(event->sequence); add_ignore_event(event->sequence); return 1; } /* * Gets triggered upon a RandR screen change event, that is when the user * changes the screen configuration in any way (mode, position, …) * */ int handle_screen_change(void *prophs, xcb_connection_t *conn, xcb_generic_event_t *e) { DLOG("RandR screen change\n"); randr_query_outputs(conn); ipc_send_event("output", I3_IPC_EVENT_OUTPUT, "{\"change\":\"unspecified\"}"); 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) { client->awaiting_useless_unmap = false; return 1; } DLOG("event->window = %08x, event->event = %08x\n", event->window, event->event); DLOG("UnmapNotify for 0x%08x (received from 0x%08x)\n", event->window, event->event); if (client == NULL) { DLOG("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)) { DLOG("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) { DLOG("Removing from dock clients\n"); SLIST_REMOVE(&(client->workspace->output->dock_clients), client, Client, dock_clients); } DLOG("child of 0x%08x.\n", client->frame); xcb_reparent_window(conn, client->child, root, 0, 0); client_unmap(conn, client); 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 */ Output *screen; TAILQ_FOREACH(screen, &outputs, outputs) if (screen->current_workspace == client->workspace) { workspace_active = true; workspace_empty = false; break; } if (workspace_empty) { client->workspace->output = NULL; ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}"); } /* Remove the urgency flag if set */ client->urgent = false; workspace_update_urgent_flag(client->workspace); FREE(client->window_class_instance); FREE(client->window_class_class); FREE(client->name); free(client); render_layout(conn); /* Ensure the focus is set to the next client in the focus stack or to * the screen itself (if we do not focus the screen, it can happen that * the focus is "nowhere" and thus keypress events will not be received * by i3, thus the user cannot use any hotkeys). */ if (workspace_active) { if (to_focus != NULL) set_focus(conn, to_focus, true); else { DLOG("Restoring focus to root screen\n"); xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME); xcb_flush(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) { if (prop == NULL || xcb_get_property_value_length(prop) == 0) { DLOG("_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("_NET_WM_NAME changed 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)) { 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; int mode = container_mode(client->container, true); if (mode == MODE_STACK || mode == MODE_TABBED) render_container(conn, client->container); else decorate_window(conn, client, client->frame, client->titlegc, 0, 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) { if (prop == NULL || xcb_get_property_value_length(prop) == 0) { DLOG("prop == NULL\n"); return 1; } Client *client = table_get(&by_child, window); if (client == NULL) return 1; /* Client capable of _NET_WM_NAME, ignore legacy name changes */ if (client->uses_net_wm_name) 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"); DLOG("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("WM_NAME changed 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) { 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 || client->container->mode == MODE_TABBED)) render_container(conn, client->container); else decorate_window(conn, client, client->frame, client->titlegc, 0, 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) { if (prop == NULL || xcb_get_property_value_length(prop) == 0) { DLOG("prop == NULL\n"); return 1; } Client *client = table_get(&by_child, window); if (client == NULL) return 1; /* We cannot use asprintf here since this property contains two * null-terminated strings (for compatibility reasons). Instead, we * use strdup() on both strings */ char *new_class = xcb_get_property_value(prop); FREE(client->window_class_instance); FREE(client->window_class_class); client->window_class_instance = strdup(new_class); if ((strlen(new_class) + 1) < xcb_get_property_value_length(prop)) client->window_class_class = strdup(new_class + strlen(new_class) + 1); else client->window_class_class = NULL; LOG("WM_CLASS changed to %s (instance), %s (class)\n", client->window_class_instance, client->window_class_class); return 0; } /* * 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; DLOG("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? */ Output *output; TAILQ_FOREACH(output, &outputs, outputs) if (output->bar == event->window) render_layout(conn); return 1; } if (client->dock) return 1; if (container_mode(client->container, true) == MODE_DEFAULT) decorate_window(conn, client, client->frame, client->titlegc, 0, 0); else { uint32_t background_color; if (client->urgent) background_color = config.client.urgent.background; /* Distinguish if the window is currently focused… */ else if (CUR_CELL != NULL && 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")); if (client->titlebar_position == TITLEBAR_OFF && !client->borderless) { xcb_rectangle_t crect = {1, 0, client->rect.width - (1 + 1), client->rect.height - 1}; xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &crect); } else { 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) { if (event->type == atoms[_NET_WM_STATE]) { if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN]) return 0; 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 { ELOG("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. */ ELOG("_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) { Client *client = table_get(&by_child, window); if (client == NULL) { DLOG("Received WM_SIZE_HINTS for unknown client\n"); return 1; } xcb_size_hints_t size_hints; CLIENT_LOG(client); /* 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)) { // TODO: Minimum size is not yet implemented DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height); } bool changed = false; if ((size_hints.flags & XCB_SIZE_HINT_P_RESIZE_INC)) { if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF) if (client->width_increment != size_hints.width_inc) { client->width_increment = size_hints.width_inc; changed = true; } if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF) if (client->height_increment != size_hints.height_inc) { client->height_increment = size_hints.height_inc; changed = true; } if (changed) DLOG("resize increments changed\n"); } 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_BASE_SIZE) { base_width = size_hints.base_width; base_height = size_hints.base_height; } else if (size_hints.flags & XCB_SIZE_HINT_P_MIN_SIZE) { /* TODO: is this right? icccm says not */ base_width = size_hints.min_width; base_height = size_hints.min_height; } if (base_width != client->base_width || base_height != client->base_height) { client->base_width = base_width; client->base_height = base_height; DLOG("client's base_height changed to %d\n", base_height); DLOG("client's base_width changed to %d\n", base_width); changed = true; } if (changed) { if (client->fullscreen) DLOG("Not resizing client, it is in fullscreen mode\n"); else { resize_client(conn, client); xcb_flush(conn); } } /* 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)) { return 1; } 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; DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect); DLOG("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 WM_HINTS property for extracting the urgency state of the window. * */ int handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window, xcb_atom_t name, xcb_get_property_reply_t *reply) { Client *client = table_get(&by_child, window); if (client == NULL) { DLOG("Received WM_HINTS for unknown client\n"); return 1; } xcb_wm_hints_t hints; if (reply != NULL) { if (!xcb_get_wm_hints_from_reply(&hints, reply)) return 1; } else { if (!xcb_get_wm_hints_reply(conn, xcb_get_wm_hints_unchecked(conn, client->child), &hints, NULL)) return 1; } Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack)); if (!client->urgent && client == last_focused) { DLOG("Ignoring urgency flag for current client\n"); return 1; } /* Update the flag on the client directly */ client->urgent = (xcb_wm_hints_get_urgency(&hints) != 0); CLIENT_LOG(client); LOG("Urgency flag changed to %d\n", client->urgent); workspace_update_urgent_flag(client->workspace); redecorate_window(conn, client); /* If the workspace this client is on is not visible, we need to redraw * the workspace bar */ if (!workspace_is_visible(client->workspace)) { Output *output = client->workspace->output; render_workspace(conn, output, output->current_workspace); 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) { Client *client = table_get(&by_child, window); if (client == NULL) { DLOG("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)) return 1; } else { if (!xcb_get_wm_transient_for_reply(conn, xcb_get_wm_transient_for_unchecked(conn, window), &transient_for, NULL)) return 1; } if (client->floating == FLOATING_AUTO_OFF) { DLOG("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) { if (prop == NULL) { prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn, false, window, WM_CLIENT_LEADER, WINDOW, 0, 32), NULL); if (prop == NULL) return 1; } 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; DLOG("Client leader changed to %08x\n", *leader); client->leader = *leader; return 1; }