Incorporate XKBCommon into example

CMake/FindXKBCommon.cmake

@@ -0,0 +1,19 @@
+# - Find XKBCommon
+# Once done, this will define
+#
+#   XKBCOMMON_FOUND - System has XKBCommon
+#   XKBCOMMON_INCLUDE_DIRS - The XKBCommon include directories
+#   XKBCOMMON_LIBRARIES - The libraries needed to use XKBCommon
+#   XKBCOMMON_DEFINITIONS - Compiler switches required for using XKBCommon
+
+find_package(PkgConfig)
+pkg_check_modules(PC_XKBCOMMON QUIET xkbcommon)
+find_path(XKBCOMMON_INCLUDE_DIRS NAMES xkbcommon/xkbcommon.h HINTS ${PC_XKBCOMMON_INCLUDE_DIRS})
+find_library(XKBCOMMON_LIBRARIES NAMES xkbcommon HINTS ${PC_XKBCOMMON_LIBRARY_DIRS})
+
+set(XKBCOMMON_DEFINITIONS ${PC_XKBCOMMON_CFLAGS_OTHER})
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(XKBCOMMON DEFAULT_MSG XKBCOMMON_LIBRARIES XKBCOMMON_INCLUDE_DIRS)
+mark_as_advanced(XKBCOMMON_LIBRARIES XKBCOMMON_INCLUDE_DIRS)
+

CMakeLists.txt

@@ -48,6 +48,7 @@ find_package(GLESv2 REQUIRED)
 find_package(DRM REQUIRED)
 find_package(GBM REQUIRED)
 find_package(LibInput REQUIRED)
+find_package(XKBCommon REQUIRED)
 find_package(Udev REQUIRED)
 find_package(Systemd)
 

backend/libinput/keyboard.c

@@ -11,6 +11,7 @@
 struct wlr_keyboard *wlr_libinput_keyboard_create(
 		struct libinput_device *device) {
 	assert(device);
+	libinput_device_led_update(device, 0);
 	return wlr_keyboard_create(NULL, NULL);
 }
 

example/CMakeLists.txt

@@ -1,6 +1,7 @@
 include_directories(
 	${DRM_INCLUDE_DIRS}
     ${CMAKE_CURRENT_SOURCE_DIR}
+    ${XKBCOMMON_INCLUDE_DIRS}
 )
 
 add_executable(simple
@@ -10,6 +11,7 @@ add_executable(simple
 target_link_libraries(simple
     wlr-backend
     wlr-session
+    ${XKBCOMMON_LIBRARIES}
 )
 
 add_executable(rotation
@@ -21,4 +23,5 @@ target_link_libraries(rotation
     wlr-backend
     wlr-session
     wlr-render
+    ${XKBCOMMON_LIBRARIES}
 )

example/simple.c

@@ -1,4 +1,5 @@
 #define _POSIX_C_SOURCE 199309L
+#include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
@@ -8,12 +9,15 @@
 #include <wlr/backend.h>
 #include <wlr/session.h>
 #include <wlr/types.h>
+#include <xkbcommon/xkbcommon.h>
 
 struct state {
 	float color[3];
 	int dec;
 	bool exit;
 	struct timespec last_frame;
+	struct xkb_keymap *keymap;
+	struct xkb_state *xkb_state;
 
 	struct wl_list keyboards;
 	struct wl_listener input_add;
@@ -35,7 +39,6 @@ struct keyboard_state {
 	struct state *state;
 	struct wlr_input_device *device;
 	struct wl_listener key;
-	struct wl_listener mods;
 	struct wl_list link;
 };
 
@@ -98,12 +101,30 @@ void output_remove(struct wl_listener *listener, void *data) {
 	wl_list_remove(&ostate->frame.link);
 }
 
+static void handle_keysym(struct state *state, xkb_keysym_t sym,
+		enum wlr_key_state key_state) {
+	char name[64];
+	int l = xkb_keysym_get_name(sym, name, sizeof(name));
+	if (l != -1 && l != sizeof(name)) {
+		fprintf(stderr, "Key event: %s %s\n", name,
+				key_state == WLR_KEY_PRESSED ? "pressed" : "released");
+	}
+	if (sym == XKB_KEY_Escape) {
+		state->exit = true;
+	}
+}
+
 static void keyboard_key(struct wl_listener *listener, void *data) {
 	struct wlr_keyboard_key *event = data;
 	struct keyboard_state *kbstate = wl_container_of(listener, kbstate, key);
-	fprintf(stderr, "Key event: %u %s\n", event->keycode,
-			event->state == WLR_KEY_PRESSED ? "pressed" : "released");
-	kbstate->state->exit = true;
+	uint32_t keycode = event->keycode + 8;
+	const xkb_keysym_t *syms;
+	int nsyms = xkb_state_key_get_syms(kbstate->state->xkb_state, keycode, &syms);
+	for (int i = 0; i < nsyms; ++i) {
+		handle_keysym(kbstate->state, syms[i], event->state);
+	}
+	xkb_state_update_key(kbstate->state->xkb_state, keycode,
+		event->state == WLR_KEY_PRESSED ?  XKB_KEY_DOWN : XKB_KEY_UP);
 }
 
 void input_add(struct wl_listener *listener, void *data) {
@@ -116,7 +137,6 @@ void input_add(struct wl_listener *listener, void *data) {
 	kbstate->device = device;
 	kbstate->state = state;
 	wl_list_init(&kbstate->key.link);
-	wl_list_init(&kbstate->mods.link);
 	kbstate->key.notify = keyboard_key;
 	wl_signal_add(&device->keyboard->events.key, &kbstate->key);
 	wl_list_insert(&state->keyboards, &kbstate->link);
@@ -140,7 +160,12 @@ void input_remove(struct wl_listener *listener, void *data) {
 	}
 	wl_list_remove(&kbstate->link);
 	wl_list_remove(&kbstate->key.link);
-	//wl_list_remove(&kbstate->mods.link);
+}
+
+static int timer_done(void *data) {
+	struct state *state = data;
+	state->exit = true;
+	return 1;
 }
 
 int main() {
@@ -151,9 +176,30 @@ int main() {
 		.input_add = { .notify = input_add },
 		.input_remove = { .notify = input_remove },
 		.output_add = { .notify = output_add },
-		.output_remove = { .notify = output_remove }
+		.output_remove = { .notify = output_remove },
 	};
 
+	struct xkb_rule_names rules;
+	memset(&rules, 0, sizeof(rules));
+	rules.rules = getenv("XKB_DEFAULT_RULES");
+	rules.model = getenv("XKB_DEFAULT_MODEL");
+	rules.layout = getenv("XKB_DEFAULT_LAYOUT");
+	rules.variant = getenv("XKB_DEFAULT_VARIANT");
+	rules.options = getenv("XKB_DEFAULT_OPTIONS");
+	struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
+	if (!context) {
+		fprintf(stderr, "Failed to create XKB context\n");
+		return 1;
+	}
+	state.keymap =
+		xkb_map_new_from_names(context, &rules, XKB_KEYMAP_COMPILE_NO_FLAGS);
+	if (!state.keymap) {
+		fprintf(stderr, "Failed to create XKB keymap\n");
+		return 1;
+	}
+	xkb_context_unref(context);
+	state.xkb_state = xkb_state_new(state.keymap);
+
 	wl_list_init(&state.keyboards);
 	wl_list_init(&state.input_add.link);
 	wl_list_init(&state.input_remove.link);
@@ -179,6 +225,10 @@ int main() {
 	if (!wlr || !wlr_backend_init(wlr)) {
 		return 1;
 	}
+	struct wl_event_source *timer = wl_event_loop_add_timer(event_loop,
+		timer_done, &state);
+
+	wl_event_source_timer_update(timer, 30000);
 
 	while (!state.exit) {
 		wl_event_loop_dispatch(event_loop, 0);

include/wlr/types.h

@@ -50,8 +50,6 @@ void wlr_output_destroy(struct wlr_output *output);
 void wlr_output_effective_resolution(struct wlr_output *output,
 		int *width, int *height);
 
-// TODO: keymaps
-
 struct wlr_keyboard_state;
 struct wlr_keyboard_impl;
 
@@ -61,7 +59,6 @@ struct wlr_keyboard {
 
 	struct {
 		struct wl_signal key;
-		struct wl_signal mods;
 	} events;
 };
 

types/wlr_keyboard.c

@@ -11,7 +11,6 @@ struct wlr_keyboard *wlr_keyboard_create(struct wlr_keyboard_impl *impl,
 	kb->impl = impl;
 	kb->state = state;
 	wl_signal_init(&kb->events.key);
-	wl_signal_init(&kb->events.mods);
 	return kb;
 }