From 257201d2cc1411e54072b314f92a997462a022fc Mon Sep 17 00:00:00 2001 From: Jan Arne Petersen Date: Sun, 18 Nov 2012 19:06:47 +0100 Subject: [PATCH] window: Add utils for xkb keyboard input Signed-off-by: Jan Arne Petersen --- clients/Makefile.am | 2 + clients/keyboard-utils.c | 173 +++++++++++++++++++++++++++++++++++++++ clients/keyboard-utils.h | 67 +++++++++++++++ 3 files changed, 242 insertions(+) create mode 100644 clients/keyboard-utils.c create mode 100644 clients/keyboard-utils.h diff --git a/clients/Makefile.am b/clients/Makefile.am index 86fe535e..284d23ef 100644 --- a/clients/Makefile.am +++ b/clients/Makefile.am @@ -81,6 +81,8 @@ noinst_LIBRARIES = libtoytoolkit.a libtoytoolkit_a_SOURCES = \ window.c \ window.h \ + keyboard-utils.c \ + keyboard-utils.h \ text-cursor-position-protocol.c \ text-cursor-position-client-protocol.h \ workspaces-protocol.c \ diff --git a/clients/keyboard-utils.c b/clients/keyboard-utils.c new file mode 100644 index 00000000..c2c5f463 --- /dev/null +++ b/clients/keyboard-utils.c @@ -0,0 +1,173 @@ +/* + * Copyright © 2012 Intel Corporation + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#include +#include +#include + +#include "keyboard-utils.h" + +struct keyboard_input { + struct xkb_context *xkb_context; + + uint32_t modifiers; + + struct xkb_keymap *keymap; + struct xkb_state *state; + xkb_mod_mask_t control_mask; + xkb_mod_mask_t alt_mask; + xkb_mod_mask_t shift_mask; + + void *user_data; + keyboard_input_key_handler_t key_handler; +}; + +struct keyboard_input* +keyboard_input_create(struct xkb_context *xkb_context) +{ + struct keyboard_input *keyboard_input; + + keyboard_input = calloc(1, sizeof *keyboard_input); + keyboard_input->xkb_context = xkb_context; + + return keyboard_input; +} + +void +keyboard_input_destroy(struct keyboard_input *keyboard_input) +{ + free(keyboard_input); +} + +void +keyboard_input_handle_keymap(struct keyboard_input *keyboard_input, + uint32_t format, int fd, uint32_t size) +{ + char *map_str; + + if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) { + close(fd); + return; + } + + map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0); + if (map_str == MAP_FAILED) { + close(fd); + return; + } + + keyboard_input->keymap = xkb_map_new_from_string(keyboard_input->xkb_context, + map_str, + XKB_KEYMAP_FORMAT_TEXT_V1, + 0); + + munmap(map_str, size); + close(fd); + + if (!keyboard_input->keymap) { + fprintf(stderr, "failed to compile keymap\n"); + return; + } + + keyboard_input->state = xkb_state_new(keyboard_input->keymap); + if (!keyboard_input->state) { + fprintf(stderr, "failed to create XKB state\n"); + xkb_map_unref(keyboard_input->keymap); + return; + } + + keyboard_input->control_mask = + 1 << xkb_map_mod_get_index(keyboard_input->keymap, "Control"); + keyboard_input->alt_mask = + 1 << xkb_map_mod_get_index(keyboard_input->keymap, "Mod1"); + keyboard_input->shift_mask = + 1 << xkb_map_mod_get_index(keyboard_input->keymap, "Shift"); +} + +void +keyboard_input_handle_key(struct keyboard_input *keyboard_input, + uint32_t serial, uint32_t time, + uint32_t key, uint32_t state_w) +{ + uint32_t code; + uint32_t num_syms; + const xkb_keysym_t *syms; + xkb_keysym_t sym; + enum wl_keyboard_key_state state = state_w; + + if (!keyboard_input->state) + return; + + code = key + 8; + num_syms = xkb_key_get_syms(keyboard_input->state, code, &syms); + + sym = XKB_KEY_NoSymbol; + if (num_syms == 1) + sym = syms[0]; + + if (keyboard_input->key_handler) + (*keyboard_input->key_handler)(keyboard_input, time, key, sym, + state, keyboard_input->user_data); +} + +void +keyboard_input_handle_modifiers(struct keyboard_input *keyboard_input, + uint32_t serial, uint32_t mods_depressed, + uint32_t mods_latched, uint32_t mods_locked, + uint32_t group) +{ + xkb_mod_mask_t mask; + + xkb_state_update_mask(keyboard_input->state, mods_depressed, mods_latched, + mods_locked, 0, 0, group); + mask = xkb_state_serialize_mods(keyboard_input->state, + XKB_STATE_DEPRESSED | + XKB_STATE_LATCHED); + + keyboard_input->modifiers = 0; + if (mask & keyboard_input->control_mask) + keyboard_input->modifiers |= MOD_CONTROL_MASK; + if (mask & keyboard_input->alt_mask) + keyboard_input->modifiers |= MOD_ALT_MASK; + if (mask & keyboard_input->shift_mask) + keyboard_input->modifiers |= MOD_SHIFT_MASK; + +} + +void +keyboard_input_set_user_data(struct keyboard_input *keyboard_input, void *data) +{ + keyboard_input->user_data = data; +} + +void * +keyboard_input_get_user_data(struct keyboard_input *keyboard_input) +{ + return keyboard_input->user_data; +} + +void +keyboard_input_set_key_handler(struct keyboard_input *keyboard_input, + keyboard_input_key_handler_t handler) +{ + keyboard_input->key_handler = handler; +} diff --git a/clients/keyboard-utils.h b/clients/keyboard-utils.h new file mode 100644 index 00000000..9b1a260c --- /dev/null +++ b/clients/keyboard-utils.h @@ -0,0 +1,67 @@ +/* + * Copyright © 2012 Intel Corporation + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#ifndef _KEYBOARD_UTILS_H_ +#define _KEYBOARD_UTILS_H_ + +#include +#include + +struct keyboard_input; + +typedef void (*keyboard_input_key_handler_t)(struct keyboard_input *keyboard_input, + uint32_t time, uint32_t key, uint32_t unicode, + enum wl_keyboard_key_state state, void *data); + +struct keyboard_input* +keyboard_input_create(struct xkb_context *xkb_context); +void +keyboard_input_destroy(struct keyboard_input *keyboard_input); + +void +keyboard_input_handle_keymap(struct keyboard_input *keyboard_input, + uint32_t format, int fd, uint32_t size); +void +keyboard_input_handle_key(struct keyboard_input *keyboard_input, + uint32_t serial, uint32_t time, + uint32_t key, uint32_t state_w); +void +keyboard_input_handle_modifiers(struct keyboard_input *keyboard_input, + uint32_t serial, uint32_t mods_depressed, + uint32_t mods_latched, uint32_t mods_locked, + uint32_t group); + +void +keyboard_input_set_user_data(struct keyboard_input *keyboard_input, void *data); + +void * +keyboard_input_get_user_data(struct keyboard_input *keyboard_input); + +void +keyboard_input_set_key_handler(struct keyboard_input *keyboard_input, + keyboard_input_key_handler_t handler); + +#define MOD_SHIFT_MASK 0x01 +#define MOD_ALT_MASK 0x02 +#define MOD_CONTROL_MASK 0x04 + +#endif