500 lines
20 KiB
C
500 lines
20 KiB
C
/*
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* vim:ts=8:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* © 2009-2010 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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* src/floating.c: contains all functions for handling floating clients
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <xcb/xcb.h>
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#include <xcb/xcb_event.h>
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#include "i3.h"
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#include "config.h"
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#include "data.h"
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#include "util.h"
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#include "xcb.h"
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#include "debug.h"
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#include "layout.h"
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#include "client.h"
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#include "floating.h"
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#include "workspace.h"
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#include "log.h"
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/*
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* Toggles floating mode for the given client.
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* Correctly takes care of the position/size (separately stored for tiling/floating mode)
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* and repositions/resizes/redecorates the client.
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*
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* If the automatic flag is set to true, this was an automatic update by a change of the
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* window class from the application which can be overwritten by the user.
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*
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*/
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void toggle_floating_mode(xcb_connection_t *conn, Client *client, bool automatic) {
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Container *con = client->container;
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i3Font *font = load_font(conn, config.font);
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if (client->dock) {
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DLOG("Not putting dock client into floating mode\n");
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return;
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}
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if (con == NULL) {
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DLOG("This client is already in floating (container == NULL), re-inserting\n");
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Client *next_tiling;
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Workspace *ws = client->workspace;
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SLIST_FOREACH(next_tiling, &(ws->focus_stack), focus_clients)
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if (!client_is_floating(next_tiling))
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break;
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/* If there are no tiling clients on this workspace, there can only be one
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* container: the first one */
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if (next_tiling == TAILQ_END(&(ws->focus_stack)))
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con = ws->table[0][0];
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else con = next_tiling->container;
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/* Remove the client from the list of floating clients */
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TAILQ_REMOVE(&(ws->floating_clients), client, floating_clients);
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DLOG("destination container = %p\n", con);
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Client *old_focused = con->currently_focused;
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/* Preserve position/size */
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memcpy(&(client->floating_rect), &(client->rect), sizeof(Rect));
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client->floating = FLOATING_USER_OFF;
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client->container = con;
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if (old_focused != NULL && !old_focused->dock)
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CIRCLEQ_INSERT_AFTER(&(con->clients), old_focused, client, clients);
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else CIRCLEQ_INSERT_TAIL(&(con->clients), client, clients);
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DLOG("Re-inserted the window.\n");
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con->currently_focused = client;
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client_set_below_floating(conn, client);
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render_container(conn, con);
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xcb_flush(conn);
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return;
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}
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DLOG("Entering floating for client %08x\n", client->child);
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/* Remove the client of its container */
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client_remove_from_container(conn, client, con, false);
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client->container = NULL;
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/* Add the client to the list of floating clients for its workspace */
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TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients);
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if (con->currently_focused == client) {
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DLOG("Need to re-adjust currently_focused\n");
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/* Get the next client in the focus stack for this particular container */
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con->currently_focused = get_last_focused_client(conn, con, NULL);
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}
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if (automatic)
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client->floating = FLOATING_AUTO_ON;
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else client->floating = FLOATING_USER_ON;
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/* Initialize the floating position from the position in tiling mode, if this
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* client never was floating (x == -1) */
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if (client->floating_rect.x == -1) {
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/* Copy over the position */
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client->floating_rect.x = client->rect.x;
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client->floating_rect.y = client->rect.y;
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/* Copy size the other direction */
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client->child_rect.width = client->floating_rect.width;
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client->child_rect.height = client->floating_rect.height;
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client->rect.width = client->child_rect.width + 2 + 2;
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client->rect.height = client->child_rect.height + (font->height + 2 + 2) + 2;
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DLOG("copying size from tiling (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
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client->floating_rect.width, client->floating_rect.height);
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} else {
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/* If the client was already in floating before we restore the old position / size */
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DLOG("using: (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
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client->floating_rect.width, client->floating_rect.height);
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memcpy(&(client->rect), &(client->floating_rect), sizeof(Rect));
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}
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/* Raise the client */
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xcb_raise_window(conn, client->frame);
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reposition_client(conn, client);
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resize_client(conn, client);
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/* redecorate_window flushes */
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redecorate_window(conn, client);
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/* Re-render the tiling layout of this container */
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render_container(conn, con);
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xcb_flush(conn);
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}
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/*
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* Removes the floating client from its workspace and attaches it to the new workspace.
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* This is centralized here because it may happen if you move it via keyboard and
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* if you move it using your mouse.
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*
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*/
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void floating_assign_to_workspace(Client *client, Workspace *new_workspace) {
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/* Remove from focus stack and list of floating clients */
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SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
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TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
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if (client->workspace->fullscreen_client == client)
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client->workspace->fullscreen_client = NULL;
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/* Insert into destination focus stack and list of floating clients */
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client->workspace = new_workspace;
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SLIST_INSERT_HEAD(&(client->workspace->focus_stack), client, focus_clients);
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TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients);
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if (client->fullscreen)
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client->workspace->fullscreen_client = client;
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}
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/*
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* This is an ugly data structure which we need because there is no standard
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* way of having nested functions (only available as a gcc extension at the
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* moment, clang doesn’t support it) or blocks (only available as a clang
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* extension and only on Mac OS X systems at the moment).
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*
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*/
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struct callback_params {
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border_t border;
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xcb_button_press_event_t *event;
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};
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DRAGGING_CB(resize_callback) {
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struct callback_params *params = extra;
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xcb_button_press_event_t *event = params->event;
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switch (params->border) {
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case BORDER_RIGHT: {
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int new_width = old_rect->width + (new_x - event->root_x);
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if ((new_width < 0) ||
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(new_width < client_min_width(client) && client->rect.width >= new_width))
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return;
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client->rect.width = new_width;
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break;
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}
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case BORDER_BOTTOM: {
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int new_height = old_rect->height + (new_y - event->root_y);
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if ((new_height < 0) ||
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(new_height < client_min_height(client) && client->rect.height >= new_height))
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return;
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client->rect.height = old_rect->height + (new_y - event->root_y);
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break;
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}
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case BORDER_TOP: {
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int new_height = old_rect->height + (event->root_y - new_y);
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if ((new_height < 0) ||
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(new_height < client_min_height(client) && client->rect.height >= new_height))
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return;
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client->rect.y = old_rect->y + (new_y - event->root_y);
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client->rect.height = new_height;
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break;
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}
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case BORDER_LEFT: {
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int new_width = old_rect->width + (event->root_x - new_x);
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if ((new_width < 0) ||
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(new_width < client_min_width(client) && client->rect.width >= new_width))
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return;
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client->rect.x = old_rect->x + (new_x - event->root_x);
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client->rect.width = new_width;
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break;
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}
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}
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/* Push the new position/size to X11 */
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reposition_client(conn, client);
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resize_client(conn, client);
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xcb_flush(conn);
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}
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/*
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* Called whenever the user clicks on a border (not the titlebar!) of a floating window.
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* Determines on which border the user clicked and launches the drag_pointer function
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* with the resize_callback.
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*
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*/
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int floating_border_click(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
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DLOG("floating border click\n");
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border_t border;
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if (event->event_y < 2)
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border = BORDER_TOP;
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else if (event->event_y >= (client->rect.height - 2))
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border = BORDER_BOTTOM;
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else if (event->event_x <= 2)
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border = BORDER_LEFT;
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else if (event->event_x >= (client->rect.width - 2))
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border = BORDER_RIGHT;
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else {
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DLOG("Not on any border, not doing anything.\n");
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return 1;
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}
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DLOG("border = %d\n", border);
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struct callback_params params = { border, event };
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drag_pointer(conn, client, event, XCB_NONE, border, resize_callback, ¶ms);
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return 1;
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}
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DRAGGING_CB(drag_window_callback) {
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struct xcb_button_press_event_t *event = extra;
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/* Reposition the client correctly while moving */
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client->rect.x = old_rect->x + (new_x - event->root_x);
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client->rect.y = old_rect->y + (new_y - event->root_y);
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reposition_client(conn, client);
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/* Because reposition_client does not send a faked configure event (only resize does),
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* we need to initiate that on our own */
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fake_absolute_configure_notify(conn, client);
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/* fake_absolute_configure_notify flushes */
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}
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/*
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* Called when the user clicked on the titlebar of a floating window.
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* Calls the drag_pointer function with the drag_window callback
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*
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*/
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void floating_drag_window(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
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DLOG("floating_drag_window\n");
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drag_pointer(conn, client, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback, event);
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}
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DRAGGING_CB(resize_window_callback) {
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xcb_button_press_event_t *event = extra;
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int32_t new_width = old_rect->width + (new_x - event->root_x);
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int32_t new_height = old_rect->height + (new_y - event->root_y);
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/* Obey minimum window size and reposition the client */
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if (new_width > 0 && new_width >= client_min_width(client))
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client->rect.width = new_width;
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if (new_height > 0 && new_height >= client_min_height(client))
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client->rect.height = new_height;
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/* resize_client flushes */
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resize_client(conn, client);
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}
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/*
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* Called when the user right-clicked on the titlebar of a floating window to
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* resize it.
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* Calls the drag_pointer function with the resize_window callback
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*
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*/
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void floating_resize_window(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
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DLOG("floating_resize_window\n");
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drag_pointer(conn, client, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback, event);
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}
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/*
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* This function grabs your pointer and lets you drag stuff around (borders).
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* Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received
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* and the given callback will be called with the parameters specified (client,
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* border on which the click originally was), the original rect of the client,
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* the event and the new coordinates (x, y).
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*
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*/
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void drag_pointer(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event,
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xcb_window_t confine_to, border_t border, callback_t callback, void *extra) {
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xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
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uint32_t new_x, new_y;
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Rect old_rect;
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if (client != NULL)
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memcpy(&old_rect, &(client->rect), sizeof(Rect));
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/* Grab the pointer */
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/* TODO: returncode */
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xcb_grab_pointer(conn,
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false, /* get all pointer events specified by the following mask */
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root, /* grab the root window */
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XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
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XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
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XCB_GRAB_MODE_ASYNC, /* keyboard mode */
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confine_to, /* confine_to = in which window should the cursor stay */
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XCB_NONE, /* don’t display a special cursor */
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XCB_CURRENT_TIME);
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/* Go into our own event loop */
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xcb_flush(conn);
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xcb_generic_event_t *inside_event, *last_motion_notify = NULL;
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/* I’ve always wanted to have my own eventhandler… */
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while ((inside_event = xcb_wait_for_event(conn))) {
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/* We now handle all events we can get using xcb_poll_for_event */
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do {
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/* Same as get_event_handler in xcb */
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int nr = inside_event->response_type;
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if (nr == 0) {
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/* An error occured */
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handle_event(NULL, conn, inside_event);
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free(inside_event);
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continue;
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}
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assert(nr < 256);
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nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
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assert(nr >= 2);
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switch (nr) {
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case XCB_BUTTON_RELEASE:
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goto done;
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case XCB_MOTION_NOTIFY:
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/* motion_notify events are saved for later */
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FREE(last_motion_notify);
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last_motion_notify = inside_event;
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break;
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case XCB_UNMAP_NOTIFY:
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DLOG("Unmap-notify, aborting\n");
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xcb_event_handle(&evenths, inside_event);
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goto done;
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default:
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DLOG("Passing to original handler\n");
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/* Use original handler */
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xcb_event_handle(&evenths, inside_event);
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break;
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}
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if (last_motion_notify != inside_event)
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free(inside_event);
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} while ((inside_event = xcb_poll_for_event(conn)) != NULL);
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if (last_motion_notify == NULL)
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continue;
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new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
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new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
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callback(conn, client, &old_rect, new_x, new_y, extra);
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FREE(last_motion_notify);
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}
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done:
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xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
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xcb_flush(conn);
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}
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/*
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* Changes focus in the given direction for floating clients.
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*
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* Changing to the left/right means going to the previous/next floating client,
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* changing to top/bottom means cycling through the Z-index.
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*
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*/
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void floating_focus_direction(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
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DLOG("floating focus\n");
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if (direction == D_LEFT || direction == D_RIGHT) {
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/* Go to the next/previous floating client */
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Client *client;
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while ((client = (direction == D_LEFT ? TAILQ_PREV(currently_focused, floating_clients_head, floating_clients) :
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TAILQ_NEXT(currently_focused, floating_clients))) !=
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TAILQ_END(&(currently_focused->workspace->floating_clients))) {
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if (!client->floating)
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continue;
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set_focus(conn, client, true);
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return;
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}
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}
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}
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/*
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* Moves the client 10px to the specified direction.
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*
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*/
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void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
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DLOG("floating move\n");
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Rect destination = currently_focused->rect;
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Rect *screen = &(currently_focused->workspace->output->rect);
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switch (direction) {
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case D_LEFT:
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destination.x -= 10;
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break;
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case D_RIGHT:
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destination.x += 10;
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break;
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case D_UP:
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destination.y -= 10;
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break;
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case D_DOWN:
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destination.y += 10;
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break;
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/* to make static analyzers happy */
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default:
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break;
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}
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/* Prevent windows from vanishing completely */
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if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
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(int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
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(int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
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(int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
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DLOG("boundary check failed, not moving\n");
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return;
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}
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currently_focused->rect = destination;
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reposition_client(conn, currently_focused);
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/* Because reposition_client does not send a faked configure event (only resize does),
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* we need to initiate that on our own */
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fake_absolute_configure_notify(conn, currently_focused);
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/* fake_absolute_configure_notify flushes */
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}
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/*
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* Hides all floating clients (or show them if they are currently hidden) on
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* the specified workspace.
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*
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*/
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void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
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Client *client;
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workspace->floating_hidden = !workspace->floating_hidden;
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DLOG("floating_hidden is now: %d\n", workspace->floating_hidden);
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TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
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if (workspace->floating_hidden)
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client_unmap(conn, client);
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else client_map(conn, client);
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}
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|
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/* 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);
|
||
}
|