386 lines
15 KiB
C
386 lines
15 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 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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/* On which border was the dragging initiated? */
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typedef enum { BORDER_LEFT, BORDER_RIGHT, BORDER_TOP, BORDER_BOTTOM} border_t;
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/* Callback for dragging */
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typedef void(*callback_t)(xcb_connection_t*, Client*, border_t, Rect*, xcb_button_press_event_t*, uint32_t, uint32_t);
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/* Forward definitions */
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static void drag_pointer(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event,
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border_t border, callback_t callback);
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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 (con == NULL) {
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LOG("This client is already in floating (container == NULL), re-inserting\n");
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Client *next_tiling;
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SLIST_FOREACH(next_tiling, &(client->workspace->focus_stack), focus_clients)
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if (next_tiling->floating <= FLOATING_USER_OFF)
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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(&(client->workspace->focus_stack)))
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con = client->workspace->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(&(client->workspace->floating_clients), client, floating_clients);
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LOG("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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LOG("Re-inserted the client into the matrix.\n");
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con->currently_focused = 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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LOG("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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LOG("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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LOG("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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LOG("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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* Callback for resizing windows
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*
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*/
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static void resize_callback(xcb_connection_t *conn, Client *client, border_t border, Rect *old_rect,
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xcb_button_press_event_t *event, uint32_t new_x, uint32_t new_y) {
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switch (border) {
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case BORDER_RIGHT:
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client->rect.width = old_rect->width + (new_x - event->root_x);
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break;
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case BORDER_BOTTOM:
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client->rect.height = old_rect->height + (new_y - event->root_y);
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break;
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case BORDER_TOP:
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client->rect.y = old_rect->y + (new_y - event->root_y);
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client->rect.height = old_rect->height + (event->root_y - new_y);
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break;
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case BORDER_LEFT:
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client->rect.x = old_rect->x + (new_x - event->root_x);
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client->rect.width = old_rect->width + (event->root_x - new_x);
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break;
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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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LOG("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 > 2)
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border = BORDER_RIGHT;
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else {
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LOG("Not on any border, not doing anything.\n");
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return 1;
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}
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LOG("border = %d\n", border);
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drag_pointer(conn, client, event, border, resize_callback);
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return 1;
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}
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static void drag_window_callback(xcb_connection_t *conn, Client *client, border_t border, Rect *old_rect,
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xcb_button_press_event_t *event, uint32_t new_x, uint32_t new_y) {
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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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LOG("floating_drag_window\n");
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drag_pointer(conn, client, event, BORDER_TOP /* irrelevant */, drag_window_callback);
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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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static void drag_pointer(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event,
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border_t border, callback_t callback) {
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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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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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XCB_NONE, /* 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;
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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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/* 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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/* Check if we need to escape this loop */
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if (nr == XCB_BUTTON_RELEASE)
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break;
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switch (nr) {
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case XCB_MOTION_NOTIFY:
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new_x = ((xcb_motion_notify_event_t*)inside_event)->root_x;
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new_y = ((xcb_motion_notify_event_t*)inside_event)->root_y;
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callback(conn, client, border, &old_rect, event, new_x, new_y);
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break;
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default:
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LOG("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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free(inside_event);
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}
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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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LOG("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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LOG("floating move\n");
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switch (direction) {
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case D_LEFT:
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if (currently_focused->rect.x < 10)
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return;
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currently_focused->rect.x -= 10;
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break;
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case D_RIGHT:
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currently_focused->rect.x += 10;
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break;
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case D_UP:
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if (currently_focused->rect.y < 10)
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return;
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currently_focused->rect.y -= 10;
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break;
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case D_DOWN:
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currently_focused->rect.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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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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LOG("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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xcb_unmap_window(conn, client->frame);
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else xcb_map_window(conn, client->frame);
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}
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/* If we just unmapped all floating windows we should ensure that the focus
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* is set correctly, that ist, to the first non-floating client in stack */
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if (workspace->floating_hidden)
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SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients)
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if (client->floating <= FLOATING_USER_OFF) {
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set_focus(conn, client, true);
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return;
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}
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xcb_flush(conn);
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}
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