gri3-wm/src/floating.c

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/*
* vim:ts=8:expandtab
*
* i3 - an improved dynamic tiling window manager
*
* © 2009 Michael Stapelberg and contributors
*
* See file LICENSE for license information.
*
* src/floating.c: contains all functions for handling floating clients
*
*/
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <xcb/xcb.h>
#include <xcb/xcb_event.h>
#include "i3.h"
#include "config.h"
#include "data.h"
#include "util.h"
#include "xcb.h"
#include "debug.h"
#include "layout.h"
#include "client.h"
#include "floating.h"
#include "workspace.h"
/*
* Toggles floating mode for the given client.
* Correctly takes care of the position/size (separately stored for tiling/floating mode)
* and repositions/resizes/redecorates the client.
*
* If the automatic flag is set to true, this was an automatic update by a change of the
* window class from the application which can be overwritten by the user.
*
*/
void toggle_floating_mode(xcb_connection_t *conn, Client *client, bool automatic) {
Container *con = client->container;
i3Font *font = load_font(conn, config.font);
if (con == NULL) {
LOG("This client is already in floating (container == NULL), re-inserting\n");
Client *next_tiling;
Workspace *ws = client->workspace;
SLIST_FOREACH(next_tiling, &(ws->focus_stack), focus_clients)
if (!client_is_floating(next_tiling))
break;
/* If there are no tiling clients on this workspace, there can only be one
* container: the first one */
if (next_tiling == TAILQ_END(&(ws->focus_stack)))
con = ws->table[0][0];
else con = next_tiling->container;
/* Remove the client from the list of floating clients */
TAILQ_REMOVE(&(ws->floating_clients), client, floating_clients);
LOG("destination container = %p\n", con);
Client *old_focused = con->currently_focused;
/* Preserve position/size */
memcpy(&(client->floating_rect), &(client->rect), sizeof(Rect));
client->floating = FLOATING_USER_OFF;
client->container = con;
if (old_focused != NULL && !old_focused->dock)
CIRCLEQ_INSERT_AFTER(&(con->clients), old_focused, client, clients);
else CIRCLEQ_INSERT_TAIL(&(con->clients), client, clients);
LOG("Re-inserted the client into the matrix.\n");
con->currently_focused = client;
client_set_below_floating(conn, client);
render_container(conn, con);
xcb_flush(conn);
return;
}
LOG("Entering floating for client %08x\n", client->child);
/* Remove the client of its container */
client_remove_from_container(conn, client, con, false);
client->container = NULL;
/* Add the client to the list of floating clients for its workspace */
TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients);
if (con->currently_focused == client) {
LOG("Need to re-adjust currently_focused\n");
/* Get the next client in the focus stack for this particular container */
con->currently_focused = get_last_focused_client(conn, con, NULL);
}
if (automatic)
client->floating = FLOATING_AUTO_ON;
else client->floating = FLOATING_USER_ON;
/* Initialize the floating position from the position in tiling mode, if this
* client never was floating (x == -1) */
if (client->floating_rect.x == -1) {
/* Copy over the position */
client->floating_rect.x = client->rect.x;
client->floating_rect.y = client->rect.y;
/* Copy size the other direction */
client->child_rect.width = client->floating_rect.width;
client->child_rect.height = client->floating_rect.height;
client->rect.width = client->child_rect.width + 2 + 2;
client->rect.height = client->child_rect.height + (font->height + 2 + 2) + 2;
LOG("copying size from tiling (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
client->floating_rect.width, client->floating_rect.height);
} else {
/* If the client was already in floating before we restore the old position / size */
LOG("using: (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
client->floating_rect.width, client->floating_rect.height);
memcpy(&(client->rect), &(client->floating_rect), sizeof(Rect));
}
/* Raise the client */
xcb_raise_window(conn, client->frame);
reposition_client(conn, client);
resize_client(conn, client);
/* redecorate_window flushes */
redecorate_window(conn, client);
/* Re-render the tiling layout of this container */
render_container(conn, con);
xcb_flush(conn);
}
/*
* Removes the floating client from its workspace and attaches it to the new workspace.
* This is centralized here because it may happen if you move it via keyboard and
* if you move it using your mouse.
*
*/
void floating_assign_to_workspace(Client *client, Workspace *new_workspace) {
Workspace *ws = client->workspace;
/* Remove from focus stack and list of floating clients */
SLIST_REMOVE(&(ws->focus_stack), client, Client, focus_clients);
TAILQ_REMOVE(&(ws->floating_clients), client, floating_clients);
if (ws->fullscreen_client == client)
ws->fullscreen_client = NULL;
/* Insert into destination focus stack and list of floating clients */
ws = new_workspace;
SLIST_INSERT_HEAD(&(ws->focus_stack), client, focus_clients);
TAILQ_INSERT_TAIL(&(ws->floating_clients), client, floating_clients);
if (client->fullscreen)
ws->fullscreen_client = client;
}
/*
* Called whenever the user clicks on a border (not the titlebar!) of a floating window.
* Determines on which border the user clicked and launches the drag_pointer function
* with the resize_callback.
*
*/
int floating_border_click(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
LOG("floating border click\n");
border_t border;
void resize_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
switch (border) {
case BORDER_RIGHT: {
int new_width = old_rect->width + (new_x - event->root_x);
if ((new_width < 0) ||
(new_width < 50 && client->rect.width >= new_width))
return;
client->rect.width = new_width;
break;
}
case BORDER_BOTTOM: {
int new_height = old_rect->height + (new_y - event->root_y);
if ((new_height < 0) ||
(new_height < 20 && client->rect.height >= new_height))
return;
client->rect.height = old_rect->height + (new_y - event->root_y);
break;
}
case BORDER_TOP: {
int new_height = old_rect->height + (event->root_y - new_y);
if ((new_height < 0) ||
(new_height < 20 && client->rect.height >= new_height))
return;
client->rect.y = old_rect->y + (new_y - event->root_y);
client->rect.height = new_height;
break;
}
case BORDER_LEFT: {
int new_width = old_rect->width + (event->root_x - new_x);
if ((new_width < 0) ||
(new_width < 50 && client->rect.width >= new_width))
return;
client->rect.x = old_rect->x + (new_x - event->root_x);
client->rect.width = new_width;
break;
}
}
/* Push the new position/size to X11 */
reposition_client(conn, client);
resize_client(conn, client);
xcb_flush(conn);
}
if (event->event_y < 2)
border = BORDER_TOP;
else if (event->event_y >= (client->rect.height - 2))
border = BORDER_BOTTOM;
else if (event->event_x <= 2)
border = BORDER_LEFT;
else if (event->event_x >= (client->rect.width - 2))
border = BORDER_RIGHT;
else {
LOG("Not on any border, not doing anything.\n");
return 1;
}
LOG("border = %d\n", border);
drag_pointer(conn, client, event, XCB_NONE, border, resize_callback);
return 1;
}
/*
* Called when the user clicked on the titlebar of a floating window.
* Calls the drag_pointer function with the drag_window callback
*
*/
void floating_drag_window(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
LOG("floating_drag_window\n");
void drag_window_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
/* Reposition the client correctly while moving */
client->rect.x = old_rect->x + (new_x - event->root_x);
client->rect.y = old_rect->y + (new_y - event->root_y);
reposition_client(conn, client);
/* Because reposition_client does not send a faked configure event (only resize does),
* we need to initiate that on our own */
fake_absolute_configure_notify(conn, client);
/* fake_absolute_configure_notify flushes */
}
drag_pointer(conn, client, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback);
}
/*
* Called when the user right-clicked on the titlebar of a floating window to
* resize it.
* Calls the drag_pointer function with the resize_window callback
*
*/
void floating_resize_window(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
LOG("floating_resize_window\n");
void resize_window_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
int32_t new_width = old_rect->width + (new_x - event->root_x);
int32_t new_height = old_rect->height + (new_y - event->root_y);
/* Obey minimum window size */
if (new_width < 75 || new_height < 50)
return;
/* Reposition the client correctly while moving */
client->rect.width = new_width;
client->rect.height = new_height;
/* resize_client flushes */
resize_client(conn, client);
}
drag_pointer(conn, client, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback);
}
/*
* This function grabs your pointer and lets you drag stuff around (borders).
* Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received
* and the given callback will be called with the parameters specified (client,
* border on which the click originally was), the original rect of the client,
* the event and the new coordinates (x, y).
*
*/
void drag_pointer(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event,
xcb_window_t confine_to, border_t border, callback_t callback) {
xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
uint32_t new_x, new_y;
Rect old_rect;
if (client != NULL)
memcpy(&old_rect, &(client->rect), sizeof(Rect));
/* Grab the pointer */
/* TODO: returncode */
xcb_grab_pointer(conn,
false, /* get all pointer events specified by the following mask */
root, /* grab the root window */
XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
XCB_GRAB_MODE_ASYNC, /* keyboard mode */
confine_to, /* confine_to = in which window should the cursor stay */
XCB_NONE, /* dont display a special cursor */
XCB_CURRENT_TIME);
/* Go into our own event loop */
xcb_flush(conn);
xcb_generic_event_t *inside_event, *last_motion_notify = NULL;
/* Ive always wanted to have my own eventhandler… */
while ((inside_event = xcb_wait_for_event(conn))) {
/* We now handle all events we can get using xcb_poll_for_event */
do {
/* Same as get_event_handler in xcb */
int nr = inside_event->response_type;
if (nr == 0) {
/* An error occured */
handle_event(NULL, conn, inside_event);
free(inside_event);
continue;
}
assert(nr < 256);
nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
assert(nr >= 2);
switch (nr) {
case XCB_BUTTON_RELEASE:
goto done;
case XCB_MOTION_NOTIFY:
/* motion_notify events are saved for later */
FREE(last_motion_notify);
last_motion_notify = inside_event;
break;
case XCB_UNMAP_NOTIFY:
LOG("Unmap-notify, aborting\n");
xcb_event_handle(&evenths, inside_event);
goto done;
default:
LOG("Passing to original handler\n");
/* Use original handler */
xcb_event_handle(&evenths, inside_event);
break;
}
if (last_motion_notify != inside_event)
free(inside_event);
} while ((inside_event = xcb_poll_for_event(conn)) != NULL);
if (last_motion_notify == NULL)
continue;
new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
callback(&old_rect, new_x, new_y);
FREE(last_motion_notify);
}
done:
xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
xcb_flush(conn);
}
/*
* Changes focus in the given direction for floating clients.
*
* Changing to the left/right means going to the previous/next floating client,
* changing to top/bottom means cycling through the Z-index.
*
*/
void floating_focus_direction(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
LOG("floating focus\n");
if (direction == D_LEFT || direction == D_RIGHT) {
/* Go to the next/previous floating client */
Client *client;
while ((client = (direction == D_LEFT ? TAILQ_PREV(currently_focused, floating_clients_head, floating_clients) :
TAILQ_NEXT(currently_focused, floating_clients))) !=
TAILQ_END(&(currently_focused->workspace->floating_clients))) {
if (!client->floating)
continue;
set_focus(conn, client, true);
return;
}
}
}
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/*
* Moves the client 10px to the specified direction.
*
*/
void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
LOG("floating move\n");
switch (direction) {
case D_LEFT:
if (currently_focused->rect.x < 10)
return;
currently_focused->rect.x -= 10;
break;
case D_RIGHT:
currently_focused->rect.x += 10;
break;
case D_UP:
if (currently_focused->rect.y < 10)
return;
currently_focused->rect.y -= 10;
break;
case D_DOWN:
currently_focused->rect.y += 10;
break;
/* to make static analyzers happy */
default:
break;
}
reposition_client(conn, currently_focused);
/* Because reposition_client does not send a faked configure event (only resize does),
* we need to initiate that on our own */
fake_absolute_configure_notify(conn, currently_focused);
/* fake_absolute_configure_notify flushes */
}
/*
* Hides all floating clients (or show them if they are currently hidden) on
* the specified workspace.
*
*/
void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
Client *client;
workspace->floating_hidden = !workspace->floating_hidden;
LOG("floating_hidden is now: %d\n", workspace->floating_hidden);
TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
if (workspace->floating_hidden)
client_unmap(conn, client);
else client_map(conn, client);
}
/* If we just unmapped all floating windows we should ensure that the focus
* is set correctly, that ist, to the first non-floating client in stack */
if (workspace->floating_hidden)
SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
if (client_is_floating(client))
continue;
set_focus(conn, client, true);
return;
}
xcb_flush(conn);
}