]> git.sur5r.net Git - i3/i3/blobdiff - src/util.c
Grab XCB_GRAB_SYNC and replay the event so it doesn’t get lost
[i3/i3] / src / util.c
index 6a33ffbe230e658f2526cfd195773083b8e9fd60..f68c9797933c1997b1f988aacb56c2be695b6472 100644 (file)
@@ -3,21 +3,72 @@
  *
  * 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
@@ -70,6 +121,18 @@ void check_error(xcb_connection_t *connection, xcb_void_cookie_t cookie, char *e
  *
  */
 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;
@@ -78,14 +141,90 @@ void set_focus(xcb_connection_t *conn, Client *client) {
         current_row = client->container->row;
 
         /* Set focus to the entered window, and flush xcb buffer immediately */
-        xcb_set_input_focus(conn, XCB_INPUT_FOCUS_NONE, client->child, XCB_CURRENT_TIME);
+        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);
+                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
@@ -93,6 +232,9 @@ void set_focus(xcb_connection_t *conn, Client *client) {
  *
  */
 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);
@@ -106,23 +248,24 @@ void toggle_fullscreen(xcb_connection_t *conn, Client *client) {
                                  XCB_CONFIG_WINDOW_Y |
                                  XCB_CONFIG_WINDOW_WIDTH |
                                  XCB_CONFIG_WINDOW_HEIGHT;
-                uint32_t values[4] = {workspace->x,
-                                      workspace->y,
-                                      workspace->width,
-                                      workspace->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 */
-                xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, client->frame);
+                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("left fullscreen\n");
+                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;