410 lines
16 KiB
C
410 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 <stdio.h>
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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#include <xcb/xcb.h>
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#include <xcb/xcb_wm.h>
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#include <X11/XKBlib.h>
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#include "i3.h"
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#include "debug.h"
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#include "table.h"
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#include "layout.h"
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#include "commands.h"
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#include "data.h"
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#include "font.h"
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#include "xcb.h"
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#include "util.h"
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#include "xinerama.h"
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/*
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* Due to bindings like Mode_switch + <a>, we need to bind some keys in XCB_GRAB_MODE_SYNC.
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* Therefore, we just replay all key presses.
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*
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*/
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int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
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printf("got key release, just passing\n");
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xcb_allow_events(conn, XCB_ALLOW_REPLAY_KEYBOARD, event->time);
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xcb_flush(conn);
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return 1;
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}
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/*
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* There was a key press. We compare this key code with our bindings table and pass
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* the bound action to parse_command().
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*
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*/
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int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
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printf("Keypress %d\n", event->detail);
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/* We need to get the keysym group (There are group 1 to group 4, each holding
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two keysyms (without shift and with shift) using Xkb because X fails to
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provide them reliably (it works in Xephyr, it does not in real X) */
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XkbStateRec state;
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if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2)
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event->state |= 0x2;
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printf("state %d\n", event->state);
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/* Remove the numlock bit, all other bits are modifiers we can bind to */
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uint16_t state_filtered = event->state & ~XCB_MOD_MASK_LOCK;
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/* Find the binding */
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Binding *bind;
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TAILQ_FOREACH(bind, &bindings, bindings)
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if (bind->keycode == event->detail && bind->mods == state_filtered)
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break;
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/* No match? Then it was an actively grabbed key, that is with Mode_switch, and
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the user did not press Mode_switch, so just pass it… */
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if (bind == TAILQ_END(&bindings)) {
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xcb_allow_events(conn, ReplayKeyboard, event->time);
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xcb_flush(conn);
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return 1;
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}
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parse_command(conn, bind->command);
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if (event->state & 0x2) {
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printf("Mode_switch -> allow_events(SyncKeyboard)\n");
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xcb_allow_events(conn, SyncKeyboard, event->time);
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xcb_flush(conn);
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}
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return 1;
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}
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/*
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* When the user moves the mouse pointer onto a window, this callback gets called.
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*
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*/
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int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
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printf("enter_notify\n");
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/* This was either a focus for a client’s parent (= titlebar)… */
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Client *client = table_get(byParent, event->event);
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/* …or the client itself */
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if (client == NULL)
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client = table_get(byChild, event->event);
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/* If not, then the user moved his cursor to the root window. In that case, we adjust c_ws */
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if (client == NULL) {
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printf("Getting screen at %d x %d\n", event->root_x, event->root_y);
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i3Screen *screen = get_screen_containing(event->root_x, event->root_y);
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if (screen == NULL) {
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printf("ERROR: No such screen\n");
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return 0;
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}
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c_ws = &workspaces[screen->current_workspace];
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printf("We're now on virtual screen number %d\n", screen->num);
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return 1;
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}
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set_focus(conn, client);
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return 1;
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}
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int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
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printf("button press!\n");
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/* This was either a focus for a client’s parent (= titlebar)… */
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Client *client = table_get(byChild, event->event);
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bool border_click = false;
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if (client == NULL) {
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client = table_get(byParent, event->event);
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border_click = true;
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}
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if (client == NULL)
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return 1;
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xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
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xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
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/* Set focus in any case */
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set_focus(conn, client);
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/* Let’s see if this was on the borders (= resize). If not, we’re done */
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printf("press button on x=%d, y=%d\n", event->event_x, event->event_y);
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Container *con = client->container,
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*first = NULL,
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*second = NULL;
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enum { O_HORIZONTAL, O_VERTICAL } orientation = O_VERTICAL;
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printf("event->event_x = %d, client->rect.width = %d\n", event->event_x, client->rect.width);
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if (!border_click) {
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printf("client. done.\n");
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return 1;
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}
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if (event->event_y < 2) {
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/* This was a press on the top border */
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if (con->row == 0)
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return 1;
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first = con->workspace->table[con->col][con->row-1];
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second = con;
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orientation = O_HORIZONTAL;
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} else if (event->event_y >= (client->rect.height - 2)) {
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/* …bottom border */
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if (con->row == (con->workspace->rows-1))
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return 1;
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first = con;
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second = con->workspace->table[con->col][con->row+1];
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orientation = O_HORIZONTAL;
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} else if (event->event_x < 2) {
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/* …left border */
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if (con->col == 0)
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return 1;
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first = con->workspace->table[con->col-1][con->row];
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second = con;
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} else if (event->event_x > 2) {
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/* …right border */
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if (con->col == (con->workspace->cols-1))
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return 1;
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first = con;
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second = con->workspace->table[con->col+1][con->row];
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}
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/* Open a new window, the resizebar. Grab the pointer and move the window around
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as the user moves the pointer. */
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Rect grabrect = {0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
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xcb_window_t grabwin = create_window(conn, grabrect, XCB_WINDOW_CLASS_INPUT_ONLY, 0, NULL);
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Rect helprect;
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if (orientation == O_VERTICAL) {
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helprect.x = event->root_x;
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helprect.y = 0;
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helprect.width = 2;
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helprect.height = root_screen->height_in_pixels; /* this has to be the cell’s height */
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} else {
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helprect.x = 0;
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helprect.y = event->root_y;
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helprect.width = root_screen->width_in_pixels; /* this has to be the cell’s width*/
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helprect.height = 2;
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}
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xcb_window_t helpwin = create_window(conn, helprect, XCB_WINDOW_CLASS_INPUT_OUTPUT, 0, NULL);
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uint32_t values[1] = {get_colorpixel(conn, helpwin, "#4c7899")};
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xcb_void_cookie_t cookie = xcb_change_window_attributes_checked(conn, helpwin, XCB_CW_BACK_PIXEL, values);
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check_error(conn, cookie, "Could not change window attributes (background color)");
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xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
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xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION,
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XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, grabwin, XCB_NONE, XCB_CURRENT_TIME);
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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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if (orientation == O_VERTICAL) {
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values[0] = ((xcb_motion_notify_event_t*)inside_event)->root_x;
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xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
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} else {
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values[0] = ((xcb_motion_notify_event_t*)inside_event)->root_y;
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xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_Y, values);
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}
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xcb_flush(conn);
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break;
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case XCB_EXPOSE:
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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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default:
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printf("Ignoring event of type %d\n", nr);
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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_destroy_window(conn, helpwin);
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xcb_destroy_window(conn, grabwin);
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xcb_flush(conn);
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Workspace *ws = con->workspace;
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if (orientation == O_VERTICAL) {
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printf("Resize was from X = %d to X = %d\n", event->root_x, values[0]);
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/* Convert 0 (for default width_factor) to actual numbers */
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if (first->width_factor == 0)
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first->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
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if (second->width_factor == 0)
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second->width_factor = ((float)ws->rect.width / ws->cols) / ws->rect.width;
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first->width_factor *= (float)(first->width + (values[0] - event->root_x)) / first->width;
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second->width_factor *= (float)(second->width - (values[0] - event->root_x)) / second->width;
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} else {
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printf("Resize was from Y = %d to Y = %d\n", event->root_y, values[0]);
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/* Convert 0 (for default height_factor) to actual numbers */
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if (first->height_factor == 0)
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first->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
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if (second->height_factor == 0)
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second->height_factor = ((float)ws->rect.height / ws->rows) / ws->rect.height;
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first->height_factor *= (float)(first->height + (values[0] - event->root_y)) / first->height;
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second->height_factor *= (float)(second->height - (values[0] - event->root_y)) / second->height;
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}
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render_layout(conn);
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return 1;
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}
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int handle_map_notify_event(void *prophs, xcb_connection_t *conn, xcb_map_notify_event_t *event) {
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window_attributes_t wa = { TAG_VALUE };
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wa.u.override_redirect = event->override_redirect;
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printf("MapNotify for 0x%08x.\n", event->window);
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manage_window(prophs, conn, event->window, wa);
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return 1;
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}
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/*
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* Our window decorations were unmapped. That means, the window will be killed now,
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* so we better clean up before.
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*
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*/
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int handle_unmap_notify_event(void *data, xcb_connection_t *c, xcb_unmap_notify_event_t *e) {
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xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(c)).data->root;
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Client *client = table_get(byChild, e->window);
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/* First, we need to check if the client is awaiting an unmap-request which
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was generated by us reparenting the window. In that case, we just ignore it. */
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if (client != NULL && client->awaiting_useless_unmap) {
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printf("Dropping this unmap request, it was generated by reparenting\n");
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client->awaiting_useless_unmap = false;
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return 1;
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}
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client = table_remove(byChild, e->window);
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printf("UnmapNotify for 0x%08x (received from 0x%08x): ", e->window, e->event);
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if(client == NULL) {
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printf("not a managed window. Ignoring.\n");
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return 0;
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}
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if (client->container->currently_focused == client)
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client->container->currently_focused = NULL;
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CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
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printf("child of 0x%08x.\n", client->frame);
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xcb_reparent_window(c, client->child, root, 0, 0);
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xcb_destroy_window(c, client->frame);
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xcb_flush(c);
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table_remove(byParent, client->frame);
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free(client);
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render_layout(c);
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return 1;
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}
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/*
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* Called when a window changes its title
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*
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*/
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int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
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xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
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printf("window's name changed.\n");
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Client *client = table_get(byChild, window);
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if (client == NULL)
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return 1;
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client->name_len = xcb_get_property_value_length(prop);
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client->name = malloc(client->name_len);
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strncpy(client->name, xcb_get_property_value(prop), client->name_len);
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printf("rename to \"%.*s\".\n", client->name_len, client->name);
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decorate_window(conn, client);
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xcb_flush(conn);
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return 1;
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}
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/*
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* Expose event means we should redraw our windows (= title bar)
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*
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*/
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int handle_expose_event(void *data, xcb_connection_t *conn, xcb_expose_event_t *e) {
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Client *client = table_get(byParent, e->window);
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if(!client || e->count != 0)
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return 1;
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printf("handle_expose_event()\n");
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decorate_window(conn, client);
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return 1;
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}
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/*
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* Handle client messages (EWMH)
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*
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*/
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int handle_client_message(void *data, xcb_connection_t *conn, xcb_client_message_event_t *event) {
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printf("client_message\n");
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if (event->type == atoms[_NET_WM_STATE]) {
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if (event->format != 32 || event->data.data32[1] != atoms[_NET_WM_STATE_FULLSCREEN])
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return 0;
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printf("fullscreen\n");
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Client *client = table_get(byChild, event->window);
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if (client == NULL)
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return 0;
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/* Check if the fullscreen state should be toggled… */
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if ((client->fullscreen &&
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(event->data.data32[0] == _NET_WM_STATE_REMOVE ||
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event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
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(!client->fullscreen &&
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(event->data.data32[0] == _NET_WM_STATE_ADD ||
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event->data.data32[0] == _NET_WM_STATE_TOGGLE)))
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toggle_fullscreen(conn, client);
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} else {
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printf("unhandled clientmessage\n");
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return 0;
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}
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return 1;
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}
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int window_type_handler(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
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xcb_atom_t atom, xcb_get_property_reply_t *property) {
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/* TODO: Implement this one. To do this, implement a little test program which sleep(1)s
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before changing this property. */
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printf("_NET_WM_WINDOW_TYPE changed, this is not yet implemented.\n");
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return 0;
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}
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