#include <sys/wait.h>
#include <stdarg.h>
#include <assert.h>
+#include <iconv.h>
+
+#include <xcb/xcb_icccm.h>
#include "i3.h"
#include "data.h"
#include "table.h"
#include "layout.h"
#include "util.h"
+#include "xcb.h"
+
+static iconv_t conversion_descriptor = 0;
+struct keyvalue_table_head by_parent = TAILQ_HEAD_INITIALIZER(by_parent);
+struct keyvalue_table_head by_child = TAILQ_HEAD_INITIALIZER(by_child);
int min(int a, int b) {
return (a < b ? a : b);
return (a > b ? a : b);
}
+/*
+ * Logs the given message to stdout while prefixing the current time to it.
+ * This is to be called by LOG() which includes filename/linenumber
+ *
+ */
+void slog(char *fmt, ...) {
+ va_list args;
+ char timebuf[64];
+
+ va_start(args, fmt);
+ /* Get current time */
+ time_t t = time(NULL);
+ /* Convert time to local time (determined by the locale) */
+ struct tm *tmp = localtime(&t);
+ /* Generate time prefix */
+ strftime(timebuf, sizeof(timebuf), "%x %X - ", tmp);
+ printf("%s", timebuf);
+ vprintf(fmt, args);
+ va_end(args);
+}
+
/*
* Prints the message (see printf()) to stderr, then exits the program.
*
return result;
}
+void *scalloc(size_t size) {
+ void *result = calloc(size, 1);
+ exit_if_null(result, "Too less memory for calloc(%d)\n", size);
+ return result;
+}
+
char *sstrdup(const char *str) {
char *result = strdup(str);
exit_if_null(result, "Too less memory for strdup()\n");
return result;
}
+/*
+ * The table_* functions emulate the behaviour of libxcb-wm, which in libxcb 0.3.4 suddenly
+ * vanished. Great.
+ *
+ */
+bool table_put(struct keyvalue_table_head *head, uint32_t key, void *value) {
+ struct keyvalue_element *element = scalloc(sizeof(struct keyvalue_element));
+ element->key = key;
+ element->value = value;
+
+ TAILQ_INSERT_TAIL(head, element, elements);
+ return true;
+}
+
+void *table_remove(struct keyvalue_table_head *head, uint32_t key) {
+ struct keyvalue_element *element;
+
+ TAILQ_FOREACH(element, head, elements)
+ if (element->key == key) {
+ void *value = element->value;
+ TAILQ_REMOVE(head, element, elements);
+ free(element);
+ return value;
+ }
+
+ return NULL;
+}
+
+void *table_get(struct keyvalue_table_head *head, uint32_t key) {
+ struct keyvalue_element *element;
+
+ TAILQ_FOREACH(element, head, elements)
+ if (element->key == key)
+ return element->value;
+
+ return NULL;
+}
+
/*
* Starts the given application by passing it through a shell. We use double fork
* to avoid zombie processes. As the started application’s parent exits (immediately),
* 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);
+ 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");
+ *real_strlen = 0;
+ return NULL;
+ }
+
+ *real_strlen = ((buffer_size - output_size) / 2) - 1;
+
+ return buffer;
+}
+
+/*
+ * Removes the given client from the container, either because it will be inserted into another
+ * one or because it was unmapped
+ *
+ */
+void remove_client_from_container(xcb_connection_t *conn, Client *client, Container *container) {
+ CIRCLEQ_REMOVE(&(container->clients), client, clients);
+
+ SLIST_REMOVE(&(container->workspace->focus_stack), client, Client, focus_clients);
+
+ /* If the container will be empty now and is in stacking mode, we need to
+ unmap the stack_win */
+ if (CIRCLEQ_EMPTY(&(container->clients)) && container->mode == MODE_STACK) {
+ struct Stack_Window *stack_win = &(container->stack_win);
+ stack_win->rect.height = 0;
+ xcb_unmap_window(conn, stack_win->window);
+ }
+}
+
+/*
+ * 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 = CUR_CELL->currently_focused;
+
+ /* Check if the focus needs to be changed at all */
+ if (!set_anyways && (old_client == client)) {
+ LOG("old_client == client, not changing focus\n");
+ return;
+ }
+
/* Store current_row/current_col */
c_ws->current_row = current_row;
c_ws->current_col = current_col;
c_ws = client->container->workspace;
/* Update container */
- Client *old_client = client->container->currently_focused;
client->container->currently_focused = client;
current_col = client->container->col;
current_row = client->container->row;
+ LOG("set_focus(frame %08x, child %08x, name %s)\n", client->frame, client->child, client->name);
/* 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);
//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);
- decorate_window(conn, client);
- xcb_flush(conn);
+
+ /* 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);
+
+ /* 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 we’re in stacking mode, this renders the container to update changes in the title
+ bars and to raise the focused client */
+ if ((old_client != NULL) && (old_client != client) && !old_client->dock)
+ redecorate_window(conn, old_client);
+
+ SLIST_REMOVE(&(client->container->workspace->focus_stack), client, Client, focus_clients);
+ SLIST_INSERT_HEAD(&(client->container->workspace->focus_stack), client, focus_clients);
+
+ /* 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->gc);
+ xcb_destroy_window(conn, stack_win->window);
+
+ stack_win->rect.width = -1;
+ stack_win->rect.height = -1;
+}
+
+/*
+ * Switches the layout of the given container taking care of the necessary house-keeping
+ *
+ */
+void switch_layout_mode(xcb_connection_t *conn, Container *container, int mode) {
+ if (mode == MODE_STACK) {
+ /* When we’re already in stacking mode, nothing has to be done */
+ if (container->mode == MODE_STACK)
+ return;
+
+ /* 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 };
+
+ uint32_t mask = 0;
+ uint32_t values[2];
+
+ /* Don’t generate events for our new window, it should *not* be managed */
+ mask |= XCB_CW_OVERRIDE_REDIRECT;
+ values[0] = 1;
+
+ /* We want to know when… */
+ mask |= XCB_CW_EVENT_MASK;
+ 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, XCB_CURSOR_LEFT_PTR, mask, values);
+
+ /* 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);
+
+ stack_win->container = container;
+
+ SLIST_INSERT_HEAD(&stack_wins, stack_win, stack_windows);
+ } else {
+ if (container->mode == MODE_STACK)
+ leave_stack_mode(conn, container);
+ }
+ container->mode = mode;
+
+ /* Force reconfiguration of each client */
+ Client *client;
+
+ CIRCLEQ_FOREACH(client, &(container->clients), clients)
+ client->force_reconfigure = true;
+
+ render_layout(conn);
}
/*
* selecting it
*
*/
-void warp_pointer_into(xcb_connection_t *connection, Client *client) {
+void warp_pointer_into(xcb_connection_t *conn, 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);
+ xcb_warp_pointer(conn, XCB_NONE, client->child, 0, 0, 0, 0, mid_x, mid_y);
}
/*
Workspace *workspace = client->container->workspace;
- workspace->fullscreen_client = (client->fullscreen ? NULL : client);
-
- client->fullscreen = !client->fullscreen;
-
- if (client->fullscreen) {
- printf("Entering fullscreen mode...\n");
+ if (!client->fullscreen) {
+ if (workspace->fullscreen_client != NULL) {
+ LOG("Not entering fullscreen mode, there already is a fullscreen client.\n");
+ return;
+ }
+ client->fullscreen = true;
+ workspace->fullscreen_client = client;
+ LOG("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 |
workspace->rect.width,
workspace->rect.height};
- printf("child itself will be at %dx%d with size %dx%d\n",
+ LOG("child itself will be at %dx%d with size %dx%d\n",
values[0], values[1], values[2], values[3]);
- /* Raise the window */
- xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, client->frame);
-
xcb_configure_window(conn, client->frame, mask, values);
+
+ /* Child’s coordinates are relative to the parent (=frame) */
+ values[0] = 0;
+ values[1] = 0;
xcb_configure_window(conn, client->child, mask, values);
- xcb_flush(conn);
+ /* Raise the window */
+ values[0] = XCB_STACK_MODE_ABOVE;
+ xcb_configure_window(conn, client->frame, XCB_CONFIG_WINDOW_STACK_MODE, values);
+
+ Rect child_rect = workspace->rect;
+ child_rect.x = child_rect.y = 0;
+ fake_configure_notify(conn, child_rect, client->child);
} else {
- printf("left fullscreen\n");
+ LOG("leaving fullscreen mode\n");
+ client->fullscreen = false;
+ workspace->fullscreen_client = NULL;
/* 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 */
+ /* We left fullscreen mode, redraw the whole layout to ensure enternotify events are disabled */
render_layout(conn);
}
+
+ xcb_flush(conn);
+}
+
+/*
+ * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
+ *
+ */
+static bool client_supports_protocol(xcb_connection_t *conn, Client *client, xcb_atom_t atom) {
+ xcb_get_property_cookie_t cookie;
+ xcb_get_wm_protocols_reply_t protocols;
+ bool result = false;
+
+ cookie = xcb_get_wm_protocols_unchecked(conn, client->child, atoms[WM_PROTOCOLS]);
+ if (xcb_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
+ return false;
+
+ /* Check if the client’s protocols have the requested atom set */
+ for (uint32_t i = 0; i < protocols.atoms_len; i++)
+ if (protocols.atoms[i] == atom)
+ result = true;
+
+ xcb_get_wm_protocols_reply_wipe(&protocols);
+
+ return result;
+}
+
+/*
+ * Kills the given window using WM_DELETE_WINDOW or xcb_kill_window
+ *
+ */
+void kill_window(xcb_connection_t *conn, Client *window) {
+ /* If the client does not support WM_DELETE_WINDOW, we kill it the hard way */
+ if (!client_supports_protocol(conn, window, atoms[WM_DELETE_WINDOW])) {
+ LOG("Killing window the hard way\n");
+ xcb_kill_client(conn, window->child);
+ return;
+ }
+
+ xcb_client_message_event_t ev;
+
+ memset(&ev, 0, sizeof(xcb_client_message_event_t));
+
+ ev.response_type = XCB_CLIENT_MESSAGE;
+ ev.window = window->child;
+ ev.type = atoms[WM_PROTOCOLS];
+ ev.format = 32;
+ ev.data.data32[0] = atoms[WM_DELETE_WINDOW];
+ ev.data.data32[1] = XCB_CURRENT_TIME;
+
+ LOG("Sending WM_DELETE to the client\n");
+ xcb_send_event(conn, false, window->child, XCB_EVENT_MASK_NO_EVENT, (char*)&ev);
+ xcb_flush(conn);
}
projects / i3 / i3 / blobdiff