*
* i3 - an improved dynamic tiling window manager
*
- * (c) 2009 Michael Stapelberg and contributors
+ * © 2009 Michael Stapelberg and contributors
*
* See file LICENSE for license information.
*
+ * util.c: Utility functions, which can be useful everywhere.
+ *
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/wait.h>
+#include <stdarg.h>
+#include <assert.h>
#include "i3.h"
+#include "data.h"
+#include "table.h"
+#include "layout.h"
+#include "util.h"
+#include "xcb.h"
+
+int min(int a, int b) {
+ return (a < b ? a : b);
+}
+
+int max(int a, int b) {
+ return (a > b ? a : b);
+}
+
+/*
+ * Prints the message (see printf()) to stderr, then exits the program.
+ *
+ */
+void die(char *fmt, ...) {
+ va_list args;
+
+ va_start(args, fmt);
+ vfprintf(stderr, fmt, args);
+ va_end(args);
+
+ exit(EXIT_FAILURE);
+}
+
+/*
+ * The s* functions (safe) are wrappers around malloc, strdup, …, which exits if one of
+ * the called functions returns NULL, meaning that there is no more memory available
+ *
+ */
+void *smalloc(size_t size) {
+ void *result = malloc(size);
+ exit_if_null(result, "Too less memory for malloc(%d)\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);
+ return result;
+}
+
+char *sstrdup(const char *str) {
+ char *result = strdup(str);
+ exit_if_null(result, "Too less memory for strdup()\n");
+ return result;
+}
/*
* Starts the given application by passing it through a shell. We use double fork
exit(-1);
}
}
+
+/*
+ * 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? */
+ if (client->dock)
+ return;
+
+ /* TODO: check if the focus needs to be changed at all */
+ /* 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;
+
+ /* 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, 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
+ bars and to raise the focused client */
+ if (client->container->mode == MODE_STACK)
+ render_container(conn, client->container);
+
+ xcb_flush(conn);
+}
+
+/*
+ * 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 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_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);
+
+ /* 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) {
+ /* 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;
+ }
+ }
+ container->mode = mode;
+
+ /* Force reconfiguration of each client */
+ Client *client;
+
+ CIRCLEQ_FOREACH(client, &(container->clients), clients)
+ client->force_reconfigure = true;
+
+ render_layout(conn);
+}
+
+/*
+ * Warps the pointer into the given client (in the middle of it, to be specific), therefore
+ * selecting it
+ *
+ */
+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);
+}
+
+/*
+ * 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.
+ *
+ */
+void toggle_fullscreen(xcb_connection_t *conn, Client *client) {
+ /* clients without a container (docks) cannot be focused */
+ assert(client->container != NULL);
+
+ Workspace *workspace = client->container->workspace;
+
+ workspace->fullscreen_client = (client->fullscreen ? NULL : client);
+
+ client->fullscreen = !client->fullscreen;
+
+ 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};
+
+ printf("child itself will be at %dx%d with size %dx%d\n",
+ values[0], values[1], values[2], values[3]);
+
+ /* Raise the window */
+ values[0] = XCB_STACK_MODE_ABOVE;
+ xcb_configure_window(conn, client->frame, XCB_CONFIG_WINDOW_STACK_MODE, values);
+
+ xcb_configure_window(conn, client->frame, mask, values);
+ xcb_configure_window(conn, client->child, mask, values);
+
+ 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);
+ }
+}