Keyboard handling

commit ee1a46632dea614fcdf614299d4de6e22a9b0060
Author: buffet <dev@buffet.sh>
Date:   Sat Mar 16 16:29:33 2019 +0100

    Fixed TTY switching

commit 7cc8aae424c924035489c09c6d5337eb281f1e39
Author: buffet <dev@buffet.sh>
Date:   Fri Mar 15 16:55:13 2019 +0100

    Started working on kb handling

include/kiwmi/input/keyboard.h

@@ -0,0 +1,27 @@
+/* Copyright (c), Charlotte Meyer <dev@buffet.sh>
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef KIWMI_INPUT_KEYBOARD_H
+#define KIWMI_INPUT_KEYBOARD_H
+
+#include <wayland-server.h>
+#include <wlr/types/wlr_input_device.h>
+
+#include "kiwmi/server.h"
+
+struct kiwmi_keyboard {
+    struct wl_list link;
+    struct kiwmi_server *server;
+    struct wlr_input_device *device;
+    struct wl_listener modifiers;
+    struct wl_listener key;
+};
+
+struct kiwmi_keyboard *
+keyboard_create(struct kiwmi_server *server, struct wlr_input_device *device);
+
+#endif /* KIWMI_INPUT_KEYBOARD_H */

include/kiwmi/server.h

@@ -23,6 +23,7 @@ struct kiwmi_server {
     struct wlr_data_device_manager *data_device_manager;
     struct wlr_output_layout *output_layout;
     const char *socket;
+    struct wl_list keyboards; // struct kiwmi_keyboard::link
     struct wl_list outputs; // struct kiwmi_output::link
     struct wl_listener new_output;
     struct kiwmi_cursor *cursor;

kiwmi/input.c

@@ -11,6 +11,7 @@
 #include <wlr/types/wlr_input_device.h>
 #include <wlr/util/log.h>
 
+#include "kiwmi/input/keyboard.h"
 #include "kiwmi/server.h"
 
 static void
@@ -19,6 +20,17 @@ new_pointer(struct kiwmi_server *server, struct wlr_input_device *device)
     wlr_cursor_attach_input_device(server->cursor->cursor, device);
 }
 
+static void
+new_keyboard(struct kiwmi_server *server, struct wlr_input_device *device)
+{
+    struct kiwmi_keyboard *keyboard = keyboard_create(server, device);
+    if (!keyboard) {
+        return;
+    }
+
+    wl_list_insert(&server->keyboards, &keyboard->link);
+}
+
 void
 new_input_notify(struct wl_listener *listener, void *data)
 {
@@ -31,6 +43,9 @@ new_input_notify(struct wl_listener *listener, void *data)
     case WLR_INPUT_DEVICE_POINTER:
         new_pointer(server, device);
         break;
+    case WLR_INPUT_DEVICE_KEYBOARD:
+        new_keyboard(server, device);
+        break;
     default:
         // NOT HANDLED
         break;

kiwmi/input/keyboard.c

@@ -0,0 +1,113 @@
+/* Copyright (c), Charlotte Meyer <dev@buffet.sh>
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include "kiwmi/input/keyboard.h"
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include <wayland-server.h>
+#include <wlr/backend/multi.h>
+#include <wlr/backend/session.h>
+#include <wlr/types/wlr_input_device.h>
+#include <wlr/util/log.h>
+#include <xkbcommon/xkbcommon.h>
+
+#include "kiwmi/server.h"
+
+static bool
+switch_vt(const xkb_keysym_t *syms, int nsyms, struct wlr_backend *backend)
+{
+    for (int i = 0; i < nsyms; ++i) {
+        const xkb_keysym_t sym = syms[i];
+
+        if (sym >= XKB_KEY_XF86Switch_VT_1 && sym <= XKB_KEY_XF86Switch_VT_12) {
+            if (wlr_backend_is_multi(backend)) {
+                struct wlr_session *session = wlr_backend_get_session(backend);
+                if (session) {
+                    unsigned vt = sym - XKB_KEY_XF86Switch_VT_1 + 1;
+                    wlr_session_change_vt(session, vt);
+                }
+            }
+            return true;
+        }
+    }
+
+    return false;
+}
+
+static void
+keyboard_modifiers_notify(
+    struct wl_listener *UNUSED(listener),
+    void *UNUSED(data))
+{
+}
+
+static void
+keyboard_key_notify(struct wl_listener *listener, void *data)
+{
+    struct kiwmi_keyboard *keyboard = wl_container_of(listener, keyboard, key);
+    struct kiwmi_server *server     = keyboard->server;
+    struct wlr_event_keyboard_key *event = data;
+
+    uint32_t keycode = event->keycode + 8;
+    const xkb_keysym_t *syms;
+    int nsyms = xkb_state_key_get_syms(
+        keyboard->device->keyboard->xkb_state, keycode, &syms);
+    uint32_t modifiers = wlr_keyboard_get_modifiers(keyboard->device->keyboard);
+
+    bool handled = false;
+
+    if (event->state == WLR_KEY_PRESSED) {
+        handled = switch_vt(syms, nsyms, server->backend);
+
+        if (!handled && (modifiers & WLR_MODIFIER_LOGO)) {
+            for (int i = 0; i < nsyms; ++i) {
+                xkb_keysym_t sym = syms[i];
+
+                switch (sym) {
+                case XKB_KEY_Escape:
+                    wl_display_terminate(server->wl_display);
+                    handled = true;
+                    break;
+                }
+            }
+        }
+    }
+}
+
+struct kiwmi_keyboard *
+keyboard_create(struct kiwmi_server *server, struct wlr_input_device *device)
+{
+    wlr_log(WLR_DEBUG, "Creating keyboard");
+
+    struct kiwmi_keyboard *keyboard = malloc(sizeof(*keyboard));
+    if (!keyboard) {
+        return NULL;
+    }
+
+    keyboard->server = server;
+    keyboard->device = device;
+
+    struct xkb_rule_names rules = {0};
+    struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
+    struct xkb_keymap *keymap =
+        xkb_map_new_from_names(context, &rules, XKB_KEYMAP_COMPILE_NO_FLAGS);
+
+    keyboard->modifiers.notify = keyboard_modifiers_notify;
+    wl_signal_add(&device->keyboard->events.modifiers, &keyboard->modifiers);
+
+    keyboard->key.notify = keyboard_key_notify;
+    wl_signal_add(&device->keyboard->events.key, &keyboard->key);
+
+    wlr_keyboard_set_keymap(device->keyboard, keymap);
+    xkb_keymap_unref(keymap);
+    xkb_context_unref(context);
+    wlr_keyboard_set_repeat_info(device->keyboard, 25, 600);
+
+    return keyboard;
+}

kiwmi/meson.build

@@ -1,15 +1,17 @@
 kiwmi_sources = files(
   'main.c',
-  'server.c',
   'input.c',
   'output.c',
+  'server.c',
   'desktop/output.c',
   'input/cursor.c',
+  'input/keyboard.c',
 )
 
 kiwmi_deps = [
   wayland_server,
   wlroots,
+  xkbcommon,
 ]
 
 executable(

kiwmi/server.c

@@ -53,6 +53,7 @@ server_init(struct kiwmi_server *server)
         return false;
     }
 
+    wl_list_init(&server->keyboards);
     wl_list_init(&server->outputs);
 
     server->new_output.notify = new_output_notify;

meson.build

@@ -19,6 +19,7 @@ add_project_arguments(
 git            = find_program('git', required: false)
 wayland_server = dependency('wayland-server')
 wlroots        = dependency('wlroots')
+xkbcommon      = dependency('xkbcommon')
 
 include = include_directories('include')