X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=src%2Futil.c;h=c8f4ee389492962b8817b8be39737dcbed20362a;hb=a0e33c1d683ffe3b67a3967980f61f828b41fef2;hp=a25e63763d191114b188be02264839e60f81d592;hpb=e4b637b67b9d6dff1979a55d8ce8da07f657fa12;p=i3%2Fi3 diff --git a/src/util.c b/src/util.c index a25e6376..c8f4ee38 100644 --- a/src/util.c +++ b/src/util.c @@ -10,20 +10,18 @@ * util.c: Utility functions, which can be useful everywhere. * */ -#include -#include -#include -#include #include #include -#include +#include +#if defined(__OpenBSD__) +#include +#endif -#include "i3.h" -#include "data.h" -#include "table.h" -#include "layout.h" -#include "util.h" -#include "xcb.h" +#include + +#include "all.h" + +static iconv_t conversion_descriptor = 0; int min(int a, int b) { return (a < b ? a : b); @@ -33,18 +31,22 @@ int max(int a, int b) { return (a > b ? a : b); } +bool rect_contains(Rect rect, uint32_t x, uint32_t y) { + return (x >= rect.x && + x <= (rect.x + rect.width) && + y >= rect.y && + y <= (rect.y + rect.height)); +} + /* - * Prints the message (see printf()) to stderr, then exits the program. + * Updates *destination with new_value and returns true if it was changed or false + * if it was the same * */ -void die(char *fmt, ...) { - va_list args; +bool update_if_necessary(uint32_t *destination, const uint32_t new_value) { + uint32_t old_value = *destination; - va_start(args, fmt); - vfprintf(stderr, fmt, args); - va_end(args); - - exit(EXIT_FAILURE); + return ((*destination = new_value) != old_value); } /* @@ -54,19 +56,25 @@ void die(char *fmt, ...) { */ void *smalloc(size_t size) { void *result = malloc(size); - exit_if_null(result, "Too less memory for malloc(%d)\n", size); + exit_if_null(result, "Error: out of memory (malloc(%zd))\n", size); return result; } void *scalloc(size_t size) { void *result = calloc(size, 1); - exit_if_null(result, "Too less memory for calloc(%d)\n", size); + exit_if_null(result, "Error: out of memory (calloc(%zd))\n", size); + return result; +} + +void *srealloc(void *ptr, size_t size) { + void *result = realloc(ptr, size); + exit_if_null(result, "Error: out memory (realloc(%zd))\n", size); return result; } char *sstrdup(const char *str) { char *result = strdup(str); - exit_if_null(result, "Too less memory for strdup()\n"); + exit_if_null(result, "Error: out of memory (strdup())\n"); return result; } @@ -81,6 +89,7 @@ char *sstrdup(const char *str) { * */ void start_application(const char *command) { + LOG("executing: %s\n", command); if (fork() == 0) { /* Child process */ if (fork() == 0) { @@ -92,7 +101,7 @@ void start_application(const char *command) { shell = "/bin/sh"; /* This is the child */ - execl(shell, shell, "-c", command, NULL); + execl(shell, shell, "-c", command, (void*)NULL); /* not reached */ } exit(0); @@ -105,55 +114,189 @@ void start_application(const char *command) { * was an error. * */ -void check_error(xcb_connection_t *connection, xcb_void_cookie_t cookie, char *err_message) { - xcb_generic_error_t *error = xcb_request_check(connection, cookie); +void check_error(xcb_connection_t *conn, xcb_void_cookie_t cookie, char *err_message) { + xcb_generic_error_t *error = xcb_request_check(conn, cookie); if (error != NULL) { - fprintf(stderr, "ERROR: %s : %d\n", err_message , error->error_code); - xcb_disconnect(connection); + fprintf(stderr, "ERROR: %s (X error %d)\n", err_message , error->error_code); + xcb_disconnect(conn); exit(-1); } } +/* + * Converts the given string to UCS-2 big endian for use with + * xcb_image_text_16(). The amount of real glyphs is stored in real_strlen, + * a buffer containing the UCS-2 encoded string (16 bit per glyph) is + * returned. It has to be freed when done. + * + */ +char *convert_utf8_to_ucs2(char *input, int *real_strlen) { + size_t input_size = strlen(input) + 1; + /* UCS-2 consumes exactly two bytes for each glyph */ + int buffer_size = input_size * 2; + + char *buffer = smalloc(buffer_size); + size_t output_size = buffer_size; + /* We need to use an additional pointer, because iconv() modifies it */ + char *output = buffer; + + /* We convert the input into UCS-2 big endian */ + if (conversion_descriptor == 0) { + conversion_descriptor = iconv_open("UCS-2BE", "UTF-8"); + if (conversion_descriptor == 0) { + fprintf(stderr, "error opening the conversion context\n"); + exit(1); + } + } + + /* Get the conversion descriptor back to original state */ + iconv(conversion_descriptor, NULL, NULL, NULL, NULL); + + /* Convert our text */ + int rc = iconv(conversion_descriptor, (void*)&input, &input_size, &output, &output_size); + if (rc == (size_t)-1) { + perror("Converting to UCS-2 failed"); + if (real_strlen != NULL) + *real_strlen = 0; + return NULL; + } + + if (real_strlen != NULL) + *real_strlen = ((buffer_size - output_size) / 2) - 1; + + return buffer; +} +#if 0 + +/* + * Returns the client which comes next in focus stack (= was selected before) for + * the given container, optionally excluding the given client. + * + */ +Client *get_last_focused_client(xcb_connection_t *conn, Container *container, Client *exclude) { + Client *current; + SLIST_FOREACH(current, &(container->workspace->focus_stack), focus_clients) + if ((current->container == container) && ((exclude == NULL) || (current != exclude))) + return current; + return NULL; +} + + /* * Sets the given client as focused by updating the data structures correctly, * updating the X input focus and finally re-decorating both windows (to signalize * the user the new focus situation) * */ -void set_focus(xcb_connection_t *conn, Client *client) { - /* The dock window cannot be focused */ - /* TODO: does this play well with dzen2’s popup menus? or do we just need to set the input - focus but not update our internal structures? */ +void set_focus(xcb_connection_t *conn, Client *client, bool set_anyways) { + /* The dock window cannot be focused, but enter notifies are still handled correctly */ if (client->dock) return; - /* TODO: check if the focus needs to be changed at all */ + /* Store the old client */ + Client *old_client = SLIST_FIRST(&(c_ws->focus_stack)); + + /* Check if the focus needs to be changed at all */ + if (!set_anyways && (old_client == client)) + return; + /* Store current_row/current_col */ c_ws->current_row = current_row; c_ws->current_col = current_col; - c_ws = client->container->workspace; + c_ws = client->workspace; + ewmh_update_current_desktop(); + /* Load current_col/current_row if we switch to a client without a container */ + current_col = c_ws->current_col; + current_row = c_ws->current_row; /* Update container */ - Client *old_client = client->container->currently_focused; - client->container->currently_focused = client; + if (client->container != NULL) { + client->container->currently_focused = client; - current_col = client->container->col; - current_row = client->container->row; + current_col = client->container->col; + current_row = client->container->row; + } + CLIENT_LOG(client); /* Set focus to the entered window, and flush xcb buffer immediately */ xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, client->child, XCB_CURRENT_TIME); + ewmh_update_active_window(client->child); //xcb_warp_pointer(conn, XCB_NONE, client->child, 0, 0, 0, 0, 10, 10); - /* Update last/current client’s titlebar */ - if (old_client != NULL) - decorate_window(conn, old_client, old_client->frame, old_client->titlegc, 0); - decorate_window(conn, client, client->frame, client->titlegc, 0); - /* If we’re in stacking mode, we render the container to update changes in the title + if (client->container != NULL) { + /* Get the client which was last focused in this particular container, it may be a different + one than old_client */ + Client *last_focused = get_last_focused_client(conn, client->container, NULL); + + /* In stacking containers, raise the client in respect to the one which was focused before */ + if ((client->container->mode == MODE_STACK || client->container->mode == MODE_TABBED) && + client->container->workspace->fullscreen_client == NULL) { + /* We need to get the client again, this time excluding the current client, because + * we might have just gone into stacking mode and need to raise */ + Client *last_focused = get_last_focused_client(conn, client->container, client); + + if (last_focused != NULL) { + DLOG("raising above frame %p / child %p\n", last_focused->frame, last_focused->child); + uint32_t values[] = { last_focused->frame, XCB_STACK_MODE_ABOVE }; + xcb_configure_window(conn, client->frame, XCB_CONFIG_WINDOW_SIBLING | XCB_CONFIG_WINDOW_STACK_MODE, values); + } + } + + /* If it is the same one as old_client, we save us the unnecessary redecorate */ + if ((last_focused != NULL) && (last_focused != old_client)) + redecorate_window(conn, last_focused); + } + + /* If the last client was a floating client, we need to go to the next + * tiling client in stack and re-decorate it. */ + if (old_client != NULL && client_is_floating(old_client)) { + DLOG("Coming from floating client, searching next tiling...\n"); + Client *current; + SLIST_FOREACH(current, &(client->workspace->focus_stack), focus_clients) { + if (client_is_floating(current)) + continue; + + DLOG("Found window: %p / child %p\n", current->frame, current->child); + redecorate_window(conn, current); + break; + } + } + + SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients); + SLIST_INSERT_HEAD(&(client->workspace->focus_stack), client, focus_clients); + + /* Clear the urgency flag if set (necessary when i3 sets the flag, for + * example when automatically putting windows on the workspace of their + * leader) */ + client->urgent = false; + workspace_update_urgent_flag(client->workspace); + + /* If we’re in stacking mode, this renders the container to update changes in the title bars and to raise the focused client */ - if (client->container->mode == MODE_STACK) - render_container(conn, client->container); + if ((old_client != NULL) && (old_client != client) && !old_client->dock) + redecorate_window(conn, old_client); - xcb_flush(conn); + /* redecorate_window flushes, so we don’t need to */ + redecorate_window(conn, client); +} + +/* + * Called when the user switches to another mode or when the container is + * destroyed and thus needs to be cleaned up. + * + */ +void leave_stack_mode(xcb_connection_t *conn, Container *container) { + /* When going out of stacking mode, we need to close the window */ + struct Stack_Window *stack_win = &(container->stack_win); + + SLIST_REMOVE(&stack_wins, stack_win, Stack_Window, stack_windows); + + xcb_free_gc(conn, stack_win->pixmap.gc); + xcb_free_pixmap(conn, stack_win->pixmap.id); + xcb_destroy_window(conn, stack_win->window); + + stack_win->rect.width = -1; + stack_win->rect.height = -1; } /* @@ -161,11 +304,22 @@ void set_focus(xcb_connection_t *conn, Client *client) { * */ void switch_layout_mode(xcb_connection_t *conn, Container *container, int mode) { - if (mode == MODE_STACK) { - /* When entering stacking mode, we need to open a window on which we can draw the - title bars of the clients, it has height 1 because we don’t bother here with - calculating the correct height - it will be adjusted when rendering anyways. */ - Rect rect = {container->x, container->y, container->width, 1 }; + if (mode == MODE_STACK || mode == MODE_TABBED) { + /* When we’re already in stacking mode, nothing has to be done */ + if ((mode == MODE_STACK && container->mode == MODE_STACK) || + (mode == MODE_TABBED && container->mode == MODE_TABBED)) + return; + + if (container->mode == MODE_STACK || container->mode == MODE_TABBED) + goto after_stackwin; + + /* When entering stacking mode, we need to open a window on + * which we can draw the title bars of the clients, it has + * height 1 because we don’t bother here with calculating the + * correct height - it will be adjusted when rendering anyways. + * Also, we need to use max(width, 1) because windows cannot + * be created with either width == 0 or height == 0. */ + Rect rect = {container->x, container->y, max(container->width, 1), 1}; uint32_t mask = 0; uint32_t values[2]; @@ -176,33 +330,29 @@ void switch_layout_mode(xcb_connection_t *conn, Container *container, int mode) /* We want to know when… */ mask |= XCB_CW_EVENT_MASK; - values[1] = XCB_EVENT_MASK_BUTTON_PRESS | /* …mouse is pressed */ + values[1] = XCB_EVENT_MASK_ENTER_WINDOW | /* …mouse is moved into our window */ + XCB_EVENT_MASK_BUTTON_PRESS | /* …mouse is pressed */ XCB_EVENT_MASK_EXPOSURE; /* …our window needs to be redrawn */ struct Stack_Window *stack_win = &(container->stack_win); - stack_win->window = create_window(conn, rect, XCB_WINDOW_CLASS_INPUT_OUTPUT, mask, values); + stack_win->window = create_window(conn, rect, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_CURSOR_LEFT_PTR, false, mask, values); + + stack_win->rect.height = 0; - /* Generate a graphics context for the titlebar */ - stack_win->gc = xcb_generate_id(conn); - xcb_create_gc(conn, stack_win->gc, stack_win->window, 0, 0); + /* Initialize the entry for our cached pixmap. It will be + * created as soon as it’s needed (see cached_pixmap_prepare). */ + memset(&(stack_win->pixmap), 0, sizeof(struct Cached_Pixmap)); + stack_win->pixmap.referred_rect = &stack_win->rect; + stack_win->pixmap.referred_drawable = stack_win->window; stack_win->container = container; SLIST_INSERT_HEAD(&stack_wins, stack_win, stack_windows); } else { - if (container->mode == MODE_STACK) { - /* When going out of stacking mode, we need to close the window */ - struct Stack_Window *stack_win = &(container->stack_win); - - SLIST_REMOVE(&stack_wins, stack_win, Stack_Window, stack_windows); - - xcb_free_gc(conn, stack_win->gc); - xcb_destroy_window(conn, stack_win->window); - - stack_win->width = -1; - stack_win->height = -1; - } + if (container->mode == MODE_STACK || container->mode == MODE_TABBED) + leave_stack_mode(conn, container); } +after_stackwin: container->mode = mode; /* Force reconfiguration of each client */ @@ -212,68 +362,206 @@ void switch_layout_mode(xcb_connection_t *conn, Container *container, int mode) client->force_reconfigure = true; render_layout(conn); + + if (container->currently_focused != NULL) { + /* We need to make sure that this client is above *each* of the + * other clients in this container */ + Client *last_focused = get_last_focused_client(conn, container, container->currently_focused); + + CIRCLEQ_FOREACH(client, &(container->clients), clients) { + if (client == container->currently_focused || client == last_focused) + continue; + + DLOG("setting %08x below %08x / %08x\n", client->frame, container->currently_focused->frame); + uint32_t values[] = { container->currently_focused->frame, XCB_STACK_MODE_BELOW }; + xcb_configure_window(conn, client->frame, + XCB_CONFIG_WINDOW_SIBLING | XCB_CONFIG_WINDOW_STACK_MODE, values); + } + + if (last_focused != NULL) { + DLOG("Putting last_focused directly underneath the currently focused\n"); + uint32_t values[] = { container->currently_focused->frame, XCB_STACK_MODE_BELOW }; + xcb_configure_window(conn, last_focused->frame, + XCB_CONFIG_WINDOW_SIBLING | XCB_CONFIG_WINDOW_STACK_MODE, values); + } + + + set_focus(conn, container->currently_focused, true); + } } /* - * Warps the pointer into the given client (in the middle of it, to be specific), therefore - * selecting it + * Gets the first matching client for the given window class/window title. + * If the paramater specific is set to a specific client, only this one + * will be checked. * */ -void warp_pointer_into(xcb_connection_t *connection, Client *client) { - int mid_x = client->rect.width / 2, - mid_y = client->rect.height / 2; - xcb_warp_pointer(connection, XCB_NONE, client->child, 0, 0, 0, 0, mid_x, mid_y); +Client *get_matching_client(xcb_connection_t *conn, const char *window_classtitle, + Client *specific) { + char *to_class, *to_title, *to_title_ucs = NULL; + int to_title_ucs_len = 0; + Client *matching = NULL; + + to_class = sstrdup(window_classtitle); + + /* If a title was specified, split both strings at the slash */ + if ((to_title = strstr(to_class, "/")) != NULL) { + *(to_title++) = '\0'; + /* Convert to UCS-2 */ + to_title_ucs = convert_utf8_to_ucs2(to_title, &to_title_ucs_len); + } + + /* If we were given a specific client we only check if that one matches */ + if (specific != NULL) { + if (client_matches_class_name(specific, to_class, to_title, to_title_ucs, to_title_ucs_len)) + matching = specific; + goto done; + } + + DLOG("Getting clients for class \"%s\" / title \"%s\"\n", to_class, to_title); + Workspace *ws; + TAILQ_FOREACH(ws, workspaces, workspaces) { + if (ws->output == NULL) + continue; + + Client *client; + SLIST_FOREACH(client, &(ws->focus_stack), focus_clients) { + DLOG("Checking client with class=%s / %s, name=%s\n", client->window_class_instance, + client->window_class_class, client->name); + if (!client_matches_class_name(client, to_class, to_title, to_title_ucs, to_title_ucs_len)) + continue; + + matching = client; + goto done; + } + } + +done: + free(to_class); + FREE(to_title_ucs); + return matching; +} +#endif + +/* + * Goes through the list of arguments (for exec()) and checks if the given argument + * is present. If not, it copies the arguments (because we cannot realloc it) and + * appends the given argument. + * + */ +static char **append_argument(char **original, char *argument) { + int num_args; + for (num_args = 0; original[num_args] != NULL; num_args++) { + DLOG("original argument: \"%s\"\n", original[num_args]); + /* If the argument is already present we return the original pointer */ + if (strcmp(original[num_args], argument) == 0) + return original; + } + /* Copy the original array */ + char **result = smalloc((num_args+2) * sizeof(char*)); + memcpy(result, original, num_args * sizeof(char*)); + result[num_args] = argument; + result[num_args+1] = NULL; + + return result; +} + +#define y(x, ...) yajl_gen_ ## x (gen, ##__VA_ARGS__) +#define ystr(str) yajl_gen_string(gen, (unsigned char*)str, strlen(str)) + +void store_restart_layout() { + yajl_gen gen = yajl_gen_alloc(NULL, NULL); + + dump_node(gen, croot, true); + + const unsigned char *payload; + unsigned int length; + y(get_buf, &payload, &length); + + char *globbed = glob_path("~/.i3/_restart.json"); + int fd = open(globbed, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR); + free(globbed); + if (fd == -1) { + perror("open()"); + return; + } + + int written = 0; + while (written < length) { + int n = write(fd, payload + written, length - written); + /* TODO: correct error-handling */ + if (n == -1) { + perror("write()"); + return; + } + if (n == 0) { + printf("write == 0?\n"); + return; + } + written += n; + printf("written: %d of %d\n", written, length); + } + close(fd); + + printf("layout: %.*s\n", length, payload); + + y(free); } /* - * Toggles fullscreen mode for the given client. It updates the data structures and - * reconfigures (= resizes/moves) the client and its frame to the full size of the - * screen. When leaving fullscreen, re-rendering the layout is forced. + * Restart i3 in-place + * appends -a to argument list to disable autostart * */ -void toggle_fullscreen(xcb_connection_t *conn, Client *client) { - /* clients without a container (docks) cannot be focused */ - assert(client->container != NULL); +void i3_restart() { + store_restart_layout(); + restore_geometry(); - Workspace *workspace = client->container->workspace; + //ipc_shutdown(); - workspace->fullscreen_client = (client->fullscreen ? NULL : client); + LOG("restarting \"%s\"...\n", start_argv[0]); + /* make sure -a is in the argument list or append it */ + start_argv = append_argument(start_argv, "-a"); - client->fullscreen = !client->fullscreen; + execvp(start_argv[0], start_argv); + /* not reached */ +} - if (client->fullscreen) { - printf("Entering fullscreen mode...\n"); - /* We just entered fullscreen mode, let’s configure the window */ - uint32_t mask = XCB_CONFIG_WINDOW_X | - XCB_CONFIG_WINDOW_Y | - XCB_CONFIG_WINDOW_WIDTH | - XCB_CONFIG_WINDOW_HEIGHT; - uint32_t values[4] = {workspace->rect.x, - workspace->rect.y, - workspace->rect.width, - workspace->rect.height}; +#if 0 - printf("child itself will be at %dx%d with size %dx%d\n", - values[0], values[1], values[2], values[3]); +#if defined(__OpenBSD__) - xcb_configure_window(conn, client->frame, mask, values); +/* + * Taken from FreeBSD + * Find the first occurrence of the byte string s in byte string l. + * + */ +void *memmem(const void *l, size_t l_len, const void *s, size_t s_len) { + register char *cur, *last; + const char *cl = (const char *)l; + const char *cs = (const char *)s; - /* Child’s coordinates are relative to the parent (=frame) */ - values[0] = 0; - values[1] = 0; - xcb_configure_window(conn, client->child, mask, values); + /* we need something to compare */ + if (l_len == 0 || s_len == 0) + return NULL; - /* Raise the window */ - values[0] = XCB_STACK_MODE_ABOVE; - xcb_configure_window(conn, client->frame, XCB_CONFIG_WINDOW_STACK_MODE, values); + /* "s" must be smaller or equal to "l" */ + if (l_len < s_len) + return NULL; - xcb_flush(conn); - } else { - printf("leaving fullscreen mode\n"); - /* Because the coordinates of the window haven’t changed, it would not be - re-configured if we don’t set the following flag */ - client->force_reconfigure = true; - /* We left fullscreen mode, redraw the layout */ - render_layout(conn); - } + /* special case where s_len == 1 */ + if (s_len == 1) + return memchr(l, (int)*cs, l_len); + + /* the last position where its possible to find "s" in "l" */ + last = (char *)cl + l_len - s_len; + + for (cur = (char *)cl; cur <= last; cur++) + if (cur[0] == cs[0] && memcmp(cur, cs, s_len) == 0) + return cur; + + return NULL; } + +#endif +#endif