4 * i3 - an improved dynamic tiling window manager
6 * © 2009 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
10 * src/floating.c: contains all functions for handling floating clients
18 #include <xcb/xcb_event.h>
29 /* On which border was the dragging initiated? */
30 typedef enum { BORDER_LEFT, BORDER_RIGHT, BORDER_TOP, BORDER_BOTTOM} border_t;
31 /* Callback for dragging */
32 typedef void(*callback_t)(xcb_connection_t*, Client*, border_t, Rect*, xcb_button_press_event_t*, uint32_t, uint32_t);
34 /* Forward definitions */
35 static void drag_pointer(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event,
36 border_t border, callback_t callback);
39 * Toggles floating mode for the given client.
40 * Correctly takes care of the position/size (separately stored for tiling/floating mode)
41 * and repositions/resizes/redecorates the client.
43 * If the automatic flag is set to true, this was an automatic update by a change of the
44 * window class from the application which can be overwritten by the user.
47 void toggle_floating_mode(xcb_connection_t *conn, Client *client, bool automatic) {
48 Container *con = client->container;
49 i3Font *font = load_font(conn, config.font);
52 LOG("This client is already in floating (container == NULL), re-inserting\n");
54 SLIST_FOREACH(next_tiling, &(client->workspace->focus_stack), focus_clients)
55 if (next_tiling->floating <= FLOATING_USER_OFF)
57 /* If there are no tiling clients on this workspace, there can only be one
58 * container: the first one */
59 if (next_tiling == SLIST_END(&(client->workspace->focus_stack)))
60 con = client->workspace->table[0][0];
61 else con = next_tiling->container;
63 LOG("destination container = %p\n", con);
64 Client *old_focused = con->currently_focused;
65 /* Preserve position/size */
66 memcpy(&(client->floating_rect), &(client->rect), sizeof(Rect));
68 client->floating = FLOATING_USER_OFF;
69 client->container = con;
71 if (old_focused != NULL && !old_focused->dock)
72 CIRCLEQ_INSERT_AFTER(&(con->clients), old_focused, client, clients);
73 else CIRCLEQ_INSERT_TAIL(&(con->clients), client, clients);
75 LOG("Re-inserted the client into the matrix.\n");
76 con->currently_focused = client;
78 render_container(conn, con);
84 LOG("Entering floating for client %08x\n", client->child);
86 /* Remove the client of its container */
87 client_remove_from_container(conn, client, con, false);
88 client->container = NULL;
90 if (con->currently_focused == client) {
91 LOG("Need to re-adjust currently_focused\n");
92 /* Get the next client in the focus stack for this particular container */
93 con->currently_focused = get_last_focused_client(conn, con, NULL);
97 client->floating = FLOATING_AUTO_ON;
98 else client->floating = FLOATING_USER_ON;
100 /* Initialize the floating position from the position in tiling mode, if this
101 * client never was floating (x == -1) */
102 if (client->floating_rect.x == -1) {
103 /* Copy over the position */
104 client->floating_rect.x = client->rect.x;
105 client->floating_rect.y = client->rect.y;
107 /* Copy the size the other direction */
108 client->child_rect.width = client->floating_rect.width;
109 client->child_rect.height = client->floating_rect.height;
111 client->rect.width = client->child_rect.width + 2 + 2;
112 client->rect.height = client->child_rect.height + (font->height + 2 + 2) + 2;
114 LOG("copying size from tiling (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
115 client->floating_rect.width, client->floating_rect.height);
117 /* If the client was already in floating before we restore the old position / size */
118 LOG("using: (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
119 client->floating_rect.width, client->floating_rect.height);
120 memcpy(&(client->rect), &(client->floating_rect), sizeof(Rect));
123 /* Raise the client */
124 xcb_raise_window(conn, client->frame);
125 reposition_client(conn, client);
126 resize_client(conn, client);
127 /* redecorate_window flushes */
128 redecorate_window(conn, client);
130 /* Re-render the tiling layout of this container */
131 render_container(conn, con);
136 * Callback for resizing windows
139 static void resize_callback(xcb_connection_t *conn, Client *client, border_t border, Rect *old_rect,
140 xcb_button_press_event_t *event, uint32_t new_x, uint32_t new_y) {
143 client->rect.width = old_rect->width + (new_x - event->root_x);
147 client->rect.height = old_rect->height + (new_y - event->root_y);
151 client->rect.y = old_rect->y + (new_y - event->root_y);
152 client->rect.height = old_rect->height + (event->root_y - new_y);
156 client->rect.x = old_rect->x + (new_x - event->root_x);
157 client->rect.width = old_rect->width + (event->root_x - new_x);
161 /* Push the new position/size to X11 */
162 reposition_client(conn, client);
163 resize_client(conn, client);
168 * Called whenever the user clicks on a border (not the titlebar!) of a floating window.
169 * Determines on which border the user clicked and launches the drag_pointer function
170 * with the resize_callback.
173 int floating_border_click(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
175 LOG("floating border click\n");
178 if (event->event_y < 2)
180 else if (event->event_y >= (client->rect.height - 2))
181 border = BORDER_BOTTOM;
182 else if (event->event_x <= 2)
183 border = BORDER_LEFT;
184 else if (event->event_x > 2)
185 border = BORDER_RIGHT;
187 LOG("Not on any border, not doing anything.\n");
191 LOG("border = %d\n", border);
193 drag_pointer(conn, client, event, border, resize_callback);
198 static void drag_window_callback(xcb_connection_t *conn, Client *client, border_t border, Rect *old_rect,
199 xcb_button_press_event_t *event, uint32_t new_x, uint32_t new_y) {
200 /* Reposition the client correctly while moving */
201 client->rect.x = old_rect->x + (new_x - event->root_x);
202 client->rect.y = old_rect->y + (new_y - event->root_y);
203 reposition_client(conn, client);
204 /* Because reposition_client does not send a faked configure event (only resize does),
205 * we need to initiate that on our own */
206 fake_absolute_configure_notify(conn, client);
207 /* fake_absolute_configure_notify flushes */
211 * Called when the user clicked on the titlebar of a floating window.
212 * Calls the drag_pointer function with the drag_window callback
215 void floating_drag_window(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
216 LOG("floating_drag_window\n");
218 drag_pointer(conn, client, event, BORDER_TOP /* irrelevant */, drag_window_callback);
222 * This function grabs your pointer and lets you drag stuff around (borders).
223 * Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received
224 * and the given callback will be called with the parameters specified (client,
225 * border on which the click originally was), the original rect of the client,
226 * the event and the new coordinates (x, y).
229 static void drag_pointer(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event,
230 border_t border, callback_t callback) {
231 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
232 uint32_t new_x, new_y;
234 memcpy(&old_rect, &(client->rect), sizeof(Rect));
236 /* Grab the pointer */
237 /* TODO: returncode */
238 xcb_grab_pointer(conn,
239 false, /* get all pointer events specified by the following mask */
240 root, /* grab the root window */
241 XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
242 XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
243 XCB_GRAB_MODE_ASYNC, /* keyboard mode */
244 XCB_NONE, /* confine_to = in which window should the cursor stay */
245 XCB_NONE, /* don’t display a special cursor */
248 /* Go into our own event loop */
251 xcb_generic_event_t *inside_event;
252 /* I’ve always wanted to have my own eventhandler… */
253 while ((inside_event = xcb_wait_for_event(conn))) {
254 /* Same as get_event_handler in xcb */
255 int nr = inside_event->response_type;
257 /* An error occured */
258 handle_event(NULL, conn, inside_event);
263 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
266 /* Check if we need to escape this loop */
267 if (nr == XCB_BUTTON_RELEASE)
271 case XCB_MOTION_NOTIFY:
272 new_x = ((xcb_motion_notify_event_t*)inside_event)->root_x;
273 new_y = ((xcb_motion_notify_event_t*)inside_event)->root_y;
275 callback(conn, client, border, &old_rect, event, new_x, new_y);
279 LOG("Passing to original handler\n");
280 /* Use original handler */
281 xcb_event_handle(&evenths, inside_event);
287 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);