/* * 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 "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" /* 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 */ int ignore_notify_event = -1; /* * 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_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, serial %d\n", event->event, event->sequence); /* Some events are not interesting, because they were not generated actively by the user, but be reconfiguration of windows */ if (event->sequence == ignore_notify_event) { LOG("Ignoring, because of previous map\n"); return 1; } /* This was either a focus for a client’s parent (= titlebar)… */ Client *client = table_get(byParent, event->event); /* …or the client itself */ if (client == NULL) client = table_get(byChild, event->event); /* 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 = &workspaces[screen->current_workspace]; LOG("We're now on virtual screen number %d\n", screen->num); return 1; } set_focus(conn, client); return 1; } 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(byChild, event->event); bool border_click = false; if (client == NULL) { client = table_get(byParent, 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? */ struct Stack_Window *stack_win; SLIST_FOREACH(stack_win, &stack_wins, stack_windows) if (stack_win->window == event->event) { /* A stack window was clicked. 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); return 1; } return 1; } 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); /* 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; } 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]; } 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; } /* Convert 0 (for default width_factor) to actual numbers */ if (first->width_factor == 0) first->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width; if (second->width_factor == 0) second->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width; first->width_factor *= (float)(first->width + (new_position - event->root_x)) / first->width; second->width_factor *= (float)(second->width - (new_position - event->root_x)) / second->width; } 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_notify_event(void *prophs, xcb_connection_t *conn, xcb_map_notify_event_t *event) { window_attributes_t wa = { TAG_VALUE }; wa.u.override_redirect = event->override_redirect; LOG("MapNotify for 0x%08x, serial is %d.\n", event->window, event->sequence); LOG("setting ignore_notify_event = %d\n", event->sequence); ignore_notify_event = event->sequence; manage_window(prophs, conn, event->window, wa); 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\n"); 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); LOG("sequence = %d\n", event->sequence); ignore_notify_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; } Client *client = table_get(byChild, event->window); if (client == NULL) { LOG("client not managed, ignoring\n"); return 1; } if (client->fullscreen) { LOG("client in fullscreen, not touching\n"); return 1; } /* Let’s see if the application has changed size/position on its own *sigh*… */ if ((event->x != client->child_rect.x) || (event->y != client->child_rect.y) || (event->width != client->child_rect.width) || (event->height != client->child_rect.height)) { /* Who is your window manager? Who’s that, huh? I AM YOUR WINDOW MANAGER! */ LOG("Application wanted to resize itself. Fixed that.\n"); client->force_reconfigure = true; render_container(conn, client->container); xcb_flush(conn); } 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; LOG("setting ignore_notify_event = %d\n", event->sequence); ignore_notify_event = event->sequence; Client *client = table_get(byChild, 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; } client = table_remove(byChild, event->window); LOG("UnmapNotify for 0x%08x (received from 0x%08x): ", event->window, event->event); if (client == NULL) { LOG("not a managed window. Ignoring.\n"); return 0; } 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); /* Remove from the focus stack */ LOG("Removing from focus stack\n"); SLIST_REMOVE(&(con->workspace->focus_stack), client, Client, focus_clients); /* Set focus to the last focused client in this container */ con->currently_focused = NULL; Client *focus_client; SLIST_FOREACH(focus_client, &(con->workspace->focus_stack), focus_clients) if (focus_client->container == con) { con->currently_focused = focus_client; set_focus(conn, focus_client); break; } } 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(byParent, client->frame); cleanup_table(conn, client->container->workspace); 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) { LOG("prop == NULL\n"); return 1; } Client *client = table_get(byChild, 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); 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; if (old_name != NULL) free(old_name); LOG("rename to \"%s\".\n", client->name); 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; } /* * 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(byParent, 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->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(byChild, 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 window_type_handler(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(byChild, 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; }