327 lines
9.2 KiB
C
327 lines
9.2 KiB
C
#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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static void set_focus(xcb_connection_t *conn, Client *client) {
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/* Update container */
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Client *old_client = client->container->currently_focused;
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client->container->currently_focused = client;
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current_col = client->container->col;
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current_row = client->container->row;
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/* Set focus to the entered window, and flush xcb buffer immediately */
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xcb_set_input_focus(conn, XCB_INPUT_FOCUS_NONE, client->child, XCB_CURRENT_TIME);
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/* Update last/current client’s titlebar */
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if (old_client != NULL)
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decorate_window(conn, old_client);
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decorate_window(conn, client);
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xcb_flush(conn);
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}
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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 lookup the key symbol and see if there are any bindings
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* on that. This allows to do things like binding special characters (think of ä) to
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* functions to get one more modifier while not losing AltGr :-)
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* TODO: this description needs to be more understandable
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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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/* Find the binding */
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/* TODO: event->state durch eine bitmask filtern und dann direkt vergleichen */
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Binding *bind, *best_match = TAILQ_END(&bindings);
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TAILQ_FOREACH(bind, &bindings, bindings) {
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if (bind->keycode == event->detail &&
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(bind->mods & event->state) == bind->mods) {
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if (best_match == TAILQ_END(&bindings) ||
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bind->mods > best_match->mods)
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best_match = bind;
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}
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}
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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 (best_match == 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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if (event->state & 0x2) {
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printf("that's mode_switch\n");
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parse_command(conn, best_match->command);
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printf("ok, hiding this event.\n");
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xcb_allow_events(conn, SyncKeyboard, 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, best_match->command);
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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 this event is not interesting. This should not happen */
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if (client == NULL) {
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printf("DEBUG: Uninteresting enter_notify-event?\n");
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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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if (client == NULL)
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client = table_get(byParent, event->event);
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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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i3Font *font = load_font(conn, pattern);
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printf("press button on x=%d, y=%d\n", event->event_x, event->event_y);
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if (event->event_y <= (font->height + 2))
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return 1;
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printf("that was resize\n");
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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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/* TODO: the whole logic is missing. this is just a proof of concept */
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xcb_window_t grabwin = xcb_generate_id(conn);
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uint32_t mask = 0;
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uint32_t values[3];
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xcb_create_window(conn,
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0,
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grabwin,
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root,
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0, /* x */
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0, /* y */
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root_screen->width_in_pixels, /* width */
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root_screen->height_in_pixels, /* height */
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/* border_width */ 0,
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XCB_WINDOW_CLASS_INPUT_ONLY,
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root_screen->root_visual,
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0,
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values);
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/* Map the window on the screen (= make it visible) */
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xcb_map_window(conn, grabwin);
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xcb_window_t helpwin = xcb_generate_id(conn);
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mask = XCB_CW_BACK_PIXEL;
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values[0] = root_screen->white_pixel;
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xcb_create_window(conn, root_screen->root_depth, helpwin, root,
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event->root_x,
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0,
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5,
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root_screen->height_in_pixels,
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/* bordor */ 0,
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XCB_WINDOW_CLASS_INPUT_OUTPUT,
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root_screen->root_visual,
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mask,
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values);
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xcb_map_window(conn, helpwin);
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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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handle_event(NULL, conn, 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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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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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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printf("---\n");
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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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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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Client *client = table_remove(byChild, e->event);
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xcb_window_t root;
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printf("UnmapNotify for 0x%08x (received from 0x%08x): ", e->window, e->event);
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if(!client)
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{
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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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int rows, cols;
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Client *con_client;
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/* TODO: clear this up */
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for (cols = 0; cols < c_ws->cols; cols++)
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for (rows = 0; rows < c_ws->rows; rows++)
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CIRCLEQ_FOREACH(con_client, &(CUR_TABLE[cols][rows]->clients), clients)
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if (con_client == client) {
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printf("removing from container\n");
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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(&(CUR_TABLE[cols][rows]->clients), con_client, clients);
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break;
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}
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root = xcb_setup_roots_iterator(xcb_get_setup(c)).data->root;
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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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printf("handle_expose_event()\n");
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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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decorate_window(conn, client);
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return 1;
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}
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