408 lines
16 KiB
C
408 lines
16 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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*/
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <unistd.h>
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#include <string.h>
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#include <xcb/xcb.h>
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#include "util.h"
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#include "data.h"
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#include "table.h"
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#include "layout.h"
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#include "i3.h"
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static bool focus_window_in_container(xcb_connection_t *connection, Container *container,
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direction_t direction) {
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/* If this container is empty, we’re done */
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if (container->currently_focused == NULL)
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return false;
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Client *candidad = NULL;
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if (direction == D_UP)
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candidad = CIRCLEQ_PREV(container->currently_focused, clients);
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else if (direction == D_DOWN)
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candidad = CIRCLEQ_NEXT(container->currently_focused, clients);
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else printf("Direction not implemented!\n");
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/* If we don’t have anything to select, we’re done */
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if (candidad == CIRCLEQ_END(&(container->clients)))
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return false;
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/* Set focus if we could successfully move */
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set_focus(connection, candidad);
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return true;
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}
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static void focus_window(xcb_connection_t *connection, direction_t direction) {
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printf("focusing direction %d\n", direction);
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/* TODO: for horizontal default layout, this has to be expanded to LEFT/RIGHT */
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if (direction == D_UP || direction == D_DOWN) {
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/* Let’s see if we can perform up/down focus in the current container */
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Container *container = CUR_CELL;
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/* There always is a container. If not, current_col or current_row is wrong */
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assert(container != NULL);
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if (focus_window_in_container(connection, container, direction))
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return;
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if (direction == D_DOWN && cell_exists(current_col, current_row+1))
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current_row++;
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else if (direction == D_UP && cell_exists(current_col, current_row-1))
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current_row--;
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} else if (direction == D_LEFT || direction == D_RIGHT) {
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if (direction == D_RIGHT && cell_exists(current_col+1, current_row))
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current_col++;
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else if (direction == D_LEFT && cell_exists(current_col-1, current_row))
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current_col--;
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else {
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printf("nah, not possible\n");
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return;
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}
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} else {
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printf("direction unhandled\n");
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return;
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}
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if (CUR_CELL->currently_focused != NULL)
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set_focus(connection, CUR_CELL->currently_focused);
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}
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/*
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* Tries to move the window inside its current container.
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*
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* Returns true if the window could be moved, false otherwise.
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*
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*/
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static bool move_current_window_in_container(xcb_connection_t *connection, Client *client,
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direction_t direction) {
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assert(client->container != NULL);
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Client *other = (direction == D_UP ? CIRCLEQ_PREV(client, clients) :
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CIRCLEQ_NEXT(client, clients));
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if (other == CIRCLEQ_END(&(client->container->clients)))
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return false;
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printf("i can do that\n");
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/* We can move the client inside its current container */
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CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
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if (direction == D_UP)
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CIRCLEQ_INSERT_BEFORE(&(client->container->clients), other, client, clients);
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else CIRCLEQ_INSERT_AFTER(&(client->container->clients), other, client, clients);
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render_layout(connection);
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return true;
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}
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/*
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* Moves the current window to the given direction, creating a column/row if
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* necessary
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*
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*/
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static void move_current_window(xcb_connection_t *connection, direction_t direction) {
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printf("moving window to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
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(direction == D_LEFT ? "left" : "right"))));
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/* Get current window */
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Container *container = CUR_CELL,
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*new = NULL;
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/* There has to be a container, see focus_window() */
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assert(container != NULL);
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/* If there is no window or the dock window is focused, we’re done */
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if (container->currently_focused == NULL ||
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container->currently_focused->dock)
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return;
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/* As soon as the client is moved away, the next client in the old
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* container needs to get focus, if any. Therefore, we save it here. */
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Client *current_client = container->currently_focused;
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Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
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if (to_focus == NULL)
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to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
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switch (direction) {
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case D_LEFT:
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if (current_col == 0)
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return;
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new = CUR_TABLE[--current_col][current_row];
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break;
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case D_RIGHT:
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if (current_col == (c_ws->cols-1))
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expand_table_cols(c_ws);
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new = CUR_TABLE[++current_col][current_row];
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break;
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case D_UP:
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/* TODO: if we’re at the up-most position, move the rest of the table down */
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if (move_current_window_in_container(connection, current_client, D_UP) ||
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current_row == 0)
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return;
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new = CUR_TABLE[current_col][--current_row];
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break;
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case D_DOWN:
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if (move_current_window_in_container(connection, current_client, D_DOWN))
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return;
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if (current_row == (c_ws->rows-1))
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expand_table_rows(c_ws);
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new = CUR_TABLE[current_col][++current_row];
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break;
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}
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/* Remove it from the old container and put it into the new one */
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CIRCLEQ_REMOVE(&(container->clients), current_client, clients);
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CIRCLEQ_INSERT_TAIL(&(new->clients), current_client, clients);
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/* Update data structures */
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current_client->container = new;
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container->currently_focused = to_focus;
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new->currently_focused = current_client;
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/* TODO: delete all empty columns/rows */
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render_layout(connection);
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set_focus(connection, current_client);
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}
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/*
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* "Snaps" the current container (not possible for windows, because it works at table base)
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* to the given direction, that is, adjusts cellspan/rowspan
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*
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*/
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static void snap_current_container(xcb_connection_t *connection, direction_t direction) {
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printf("snapping container to direction %d\n", direction);
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Container *container = CUR_CELL;
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assert(container != NULL);
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switch (direction) {
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case D_LEFT:
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/* Snap to the left is actually a move to the left and then a snap right */
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move_current_window(connection, D_LEFT);
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snap_current_container(connection, D_RIGHT);
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return;
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case D_RIGHT:
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/* Check if the cell is used */
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if (!cell_exists(container->col + 1, container->row) ||
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CUR_TABLE[container->col+1][container->row]->currently_focused != NULL) {
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printf("cannot snap to right - the cell is already used\n");
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return;
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}
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/* Check if there are other cells with rowspan, which are in our way.
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* If so, reduce their rowspan. */
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for (int i = container->row-1; i >= 0; i--) {
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printf("we got cell %d, %d with rowspan %d\n",
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container->col+1, i, CUR_TABLE[container->col+1][i]->rowspan);
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while ((CUR_TABLE[container->col+1][i]->rowspan-1) >= (container->row - i))
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CUR_TABLE[container->col+1][i]->rowspan--;
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printf("new rowspan = %d\n", CUR_TABLE[container->col+1][i]->rowspan);
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}
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container->colspan++;
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break;
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case D_UP:
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move_current_window(connection, D_UP);
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snap_current_container(connection, D_DOWN);
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return;
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case D_DOWN:
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printf("snapping down\n");
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if (!cell_exists(container->col, container->row+1) ||
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CUR_TABLE[container->col][container->row+1]->currently_focused != NULL) {
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printf("cannot snap down - the cell is already used\n");
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return;
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}
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for (int i = container->col-1; i >= 0; i--) {
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printf("we got cell %d, %d with colspan %d\n",
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i, container->row+1, CUR_TABLE[i][container->row+1]->colspan);
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while ((CUR_TABLE[i][container->row+1]->colspan-1) >= (container->col - i))
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CUR_TABLE[i][container->row+1]->colspan--;
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printf("new colspan = %d\n", CUR_TABLE[i][container->row+1]->colspan);
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}
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container->rowspan++;
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break;
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}
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render_layout(connection);
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}
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static void show_workspace(xcb_connection_t *conn, int workspace) {
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Client *client;
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xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
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/* t_ws (to workspace) is just a convenience pointer to the workspace we’re switching to */
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Workspace *t_ws = &(workspaces[workspace-1]);
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printf("show_workspace(%d)\n", workspace);
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/* Store current_row/current_col */
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c_ws->current_row = current_row;
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c_ws->current_col = current_col;
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/* Check if the workspace has not been used yet */
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if (t_ws->screen == NULL) {
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printf("initializing new workspace, setting num to %d\n", workspace);
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t_ws->screen = c_ws->screen;
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/* Copy the dimensions from the virtual screen */
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memcpy(&(t_ws->rect), &(t_ws->screen->rect), sizeof(Rect));
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}
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if (c_ws->screen != t_ws->screen) {
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/* We need to switch to the other screen first */
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printf("Just moving over to other screen.\n");
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c_ws = &(workspaces[t_ws->screen->current_workspace]);
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current_col = c_ws->current_col;
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current_row = c_ws->current_row;
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if (CUR_CELL->currently_focused != NULL)
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warp_pointer_into(conn, CUR_CELL->currently_focused);
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else {
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Rect *dims = &(c_ws->screen->rect);
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xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0,
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dims->x + (dims->width / 2), dims->y + (dims->height / 2));
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}
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}
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/* Check if we need to change something or if we’re already there */
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if (c_ws->screen->current_workspace == (workspace-1))
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return;
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t_ws->screen->current_workspace = workspace-1;
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/* TODO: does grabbing the server actually bring us any (speed)advantages? */
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//xcb_grab_server(conn);
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/* Unmap all clients of the current workspace */
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for (int cols = 0; cols < c_ws->cols; cols++)
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for (int rows = 0; rows < c_ws->rows; rows++)
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CIRCLEQ_FOREACH(client, &(c_ws->table[cols][rows]->clients), clients)
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xcb_unmap_window(conn, client->frame);
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c_ws = &workspaces[workspace-1];
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current_row = c_ws->current_row;
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current_col = c_ws->current_col;
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printf("new current row = %d, current col = %d\n", current_row, current_col);
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/* Map all clients on the new workspace */
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for (int cols = 0; cols < c_ws->cols; cols++)
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for (int rows = 0; rows < c_ws->rows; rows++)
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CIRCLEQ_FOREACH(client, &(c_ws->table[cols][rows]->clients), clients)
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xcb_map_window(conn, client->frame);
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/* Restore focus on the new workspace */
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if (CUR_CELL->currently_focused != NULL)
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xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, CUR_CELL->currently_focused->child, XCB_CURRENT_TIME);
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else xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
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//xcb_ungrab_server(conn);
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render_layout(conn);
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}
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/*
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* Parses a command, see file CMDMODE for more information
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*
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*/
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void parse_command(xcb_connection_t *conn, const char *command) {
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printf("--- parsing command \"%s\" ---\n", command);
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/* Hmm, just to be sure */
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if (command[0] == '\0')
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return;
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/* Is it an <exec>? */
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if (strncmp(command, "exec ", strlen("exec ")) == 0) {
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printf("starting \"%s\"\n", command + strlen("exec "));
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start_application(command+strlen("exec "));
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return;
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}
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/* Is it 'f' for fullscreen? */
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if (command[0] == 'f') {
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if (CUR_CELL->currently_focused == NULL)
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return;
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toggle_fullscreen(conn, CUR_CELL->currently_focused);
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return;
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}
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/* Is it just 's' for stacking or 'd' for default? */
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if ((command[0] == 's' || command[0] == 'd') && (command[1] == '\0')) {
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printf("Switching mode for current container\n");
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switch_layout_mode(conn, CUR_CELL, (command[0] == 's' ? MODE_STACK : MODE_DEFAULT));
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return;
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}
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/* Is it a <with>? */
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if (command[0] == 'w') {
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/* TODO: implement */
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printf("not yet implemented.\n");
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return;
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}
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/* It's a normal <cmd> */
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int times;
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char *rest = NULL;
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enum { ACTION_FOCUS, ACTION_MOVE, ACTION_SNAP } action = ACTION_FOCUS;
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direction_t direction;
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times = strtol(command, &rest, 10);
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if (rest == NULL) {
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printf("Invalid command (\"%s\")\n", command);
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return;
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}
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if (*rest == 'm' || *rest == 's') {
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action = (*rest == 'm' ? ACTION_MOVE : ACTION_SNAP);
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rest++;
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}
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if (*rest == '\0') {
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/* No rest? This was a tag number, not a times specification */
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show_workspace(conn, times);
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return;
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}
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/* Now perform action to <where> */
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while (*rest != '\0') {
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if (*rest == 'h')
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direction = D_LEFT;
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else if (*rest == 'j')
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direction = D_DOWN;
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else if (*rest == 'k')
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direction = D_UP;
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else if (*rest == 'l')
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direction = D_RIGHT;
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else {
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printf("unknown direction: %c\n", *rest);
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return;
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}
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if (action == ACTION_FOCUS)
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focus_window(conn, direction);
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else if (action == ACTION_MOVE)
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move_current_window(conn, direction);
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else if (action == ACTION_SNAP)
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snap_current_container(conn, direction);
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rest++;
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}
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printf("--- done ---\n");
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}
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