Skip to content

Commit

Permalink
Merge pull request #745 from beatwise/xkbcommon-support
Browse files Browse the repository at this point in the history 
While not being sure about the details of the add of this library, it seems to work and it's a demo, so no harm pushing this PR.
  • Loading branch information
@riri
riri authored Nov 23, 2024
2 parents 0bc2161 + d97efed commit 38d6339
Show file tree
Hide file tree
Showing 2 changed files with 124 additions and 9 deletions.
6 changes: 3 additions & 3 deletions demo/xcb_cairo/Makefile
View file
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
# Target
BIN = demo
CFLAGS += -std=c89 -pedantic
CFLAGS += -std=c89 -pedantic -g
LDFLAGS += -lm
SRC = ${wildcard *.c}
OBJ = $(SRC:.c=.o)
Expand All @@ -10,8 +10,8 @@ CFLAGS += ${shell pkg-config --cflags freetype2}
LDFLAGS += ${shell pkg-config --libs freetype2}

# XCB
CFLAGS += ${shell pkg-config --cflags xcb xcb-util xcb-keysyms}
LDFLAGS += ${shell pkg-config --libs xcb xcb-util xcb-keysyms}
CFLAGS += ${shell pkg-config --cflags xcb xcb-util xcb-keysyms xkbcommon xkbcommon-x11}
LDFLAGS += ${shell pkg-config --libs xcb xcb-util xcb-keysyms xkbcommon xkbcommon-x11}

# Cairo
CFLAGS += ${shell pkg-config --cflags cairo}
Expand Down
127 changes: 121 additions & 6 deletions demo/xcb_cairo/nuklear_xcb.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -87,6 +87,10 @@ NK_API void nk_xcb_resize_cairo_surface(struct nk_xcb_context *xcb_ctx, void *su
#include <cairo/cairo-xcb.h>
#include <cairo/cairo-ft.h>

#include <xkbcommon/xkbcommon.h>
#include <xkbcommon/xkbcommon-x11.h>


#if defined _XOPEN_SOURCE && _XOPEN_SOURCE >= 600 || \
defined _POSIX_C_SOURCE && _POSIX_C_SOURCE >= 200112L
#include <time.h>
Expand All @@ -110,6 +114,23 @@ NK_API void nk_xcb_resize_cairo_surface(struct nk_xcb_context *xcb_ctx, void *su
#define NK_XCB_TO_CAIRO(x) ((double) x / 255.0)
#define NK_XCB_DEG_TO_RAD(x) ((double) x * NK_XCB_PI / 180.0)

typedef struct xkb_context xkb_context;
typedef struct xkb_keymap xkb_keymap;
typedef struct xkb_state xkb_state;
typedef struct xkbcommon_context xkbcommon_context;
typedef struct nk_xcb_context nk_xcb_context;

struct xkbcommon_context
{
struct xkb_context *ctx;
struct xkb_keymap *keymap;
struct xkb_state *state;
};

NK_INTERN void xkbcommon_free(xkbcommon_context *kbdctx);
NK_INTERN xkbcommon_context *xkbcommon_init(xcb_connection_t *conn);
NK_INTERN xkb_keysym_t keycode_to_keysym(nk_xcb_context *ctx, xkb_keycode_t keycode, int pressed);

struct nk_cairo_context {
cairo_surface_t *surface;
cairo_t *cr;
Expand All @@ -126,7 +147,8 @@ struct nk_xcb_context {
xcb_connection_t *conn;
int screennum;
xcb_window_t window;
xcb_key_symbols_t *key_symbols;
/* xcb_key_symbols_t *key_symbols; */
xkbcommon_context *xkbcommon_ctx;
#ifdef NK_XCB_MIN_FRAME_TIME
unsigned long last_render;
#endif /* NK_XCB_MIN_FRAME_TIME */
Expand Down Expand Up @@ -187,7 +209,8 @@ NK_API struct nk_xcb_context *nk_xcb_init(const char *title, int pos_x, int pos_
xcb_ctx->conn = conn;
xcb_ctx->screennum = screenNum;
xcb_ctx->window = window;
xcb_ctx->key_symbols = xcb_key_symbols_alloc(xcb_ctx->conn);
/* xcb_ctx->key_symbols = xcb_key_symbols_alloc(xcb_ctx->conn); */
xcb_ctx->xkbcommon_ctx = xkbcommon_init(conn);
xcb_ctx->del_atom = del_atom;
xcb_ctx->width = width;
xcb_ctx->height = height;
Expand All @@ -197,8 +220,9 @@ NK_API struct nk_xcb_context *nk_xcb_init(const char *title, int pos_x, int pos_

NK_API void nk_xcb_free(struct nk_xcb_context *xcb_ctx)
{
xkbcommon_free(xcb_ctx->xkbcommon_ctx);
free(xcb_ctx->del_atom);
xcb_key_symbols_free(xcb_ctx->key_symbols);
/* xcb_key_symbols_free(xcb_ctx->key_symbols); */
xcb_disconnect(xcb_ctx->conn);
free(xcb_ctx);
}
Expand All @@ -225,7 +249,9 @@ NK_API int nk_xcb_handle_event(struct nk_xcb_context *xcb_ctx, struct nk_context
{
int press = (XCB_EVENT_RESPONSE_TYPE(event)) == XCB_KEY_PRESS;
xcb_key_press_event_t *kp = (xcb_key_press_event_t *)event;
xcb_keysym_t sym = xcb_key_symbols_get_keysym(xcb_ctx->key_symbols, kp->detail, kp->state);
/* xcb_keysym_t sym = xcb_key_symbols_get_keysym(xcb_ctx->key_symbols, kp->detail, kp->state);*/
xcb_keysym_t sym = keycode_to_keysym(xcb_ctx, kp->detail, press);

switch (sym) {
case XK_Shift_L:
case XK_Shift_R:
Expand Down Expand Up @@ -302,7 +328,8 @@ NK_API int nk_xcb_handle_event(struct nk_xcb_context *xcb_ctx, struct nk_context
!xcb_is_misc_function_key(sym) &&
!xcb_is_modifier_key(sym)
) {
nk_input_char(nk_ctx, sym);
/* nk_input_char(nk_ctx, sym); */
nk_input_unicode(nk_ctx, sym);
}
else {
printf("state: %x code: %x sum: %x\n", kp->state, kp->detail, sym);
Expand Down Expand Up @@ -366,7 +393,7 @@ NK_API int nk_xcb_handle_event(struct nk_xcb_context *xcb_ctx, struct nk_context
}
break;
case XCB_KEYMAP_NOTIFY:
xcb_refresh_keyboard_mapping(xcb_ctx->key_symbols, (xcb_mapping_notify_event_t *)event);
/* xcb_refresh_keyboard_mapping(xcb_ctx->key_symbols, (xcb_mapping_notify_event_t *)event); */
break;
case XCB_EXPOSE:
case XCB_REPARENT_NOTIFY:
Expand Down Expand Up @@ -833,4 +860,92 @@ NK_API int nk_cairo_render(struct nk_cairo_context *cairo_ctx, struct nk_context
return nk_true;
}

NK_INTERN xkbcommon_context *xkbcommon_init(xcb_connection_t *conn)
{
xkbcommon_context *kbdctx;
int32_t device_id;

int ret = xkb_x11_setup_xkb_extension(conn,
XKB_X11_MIN_MAJOR_XKB_VERSION,
XKB_X11_MIN_MINOR_XKB_VERSION,
XKB_X11_SETUP_XKB_EXTENSION_NO_FLAGS,
NULL, NULL, NULL, NULL);

if (ret == 0)
{
return NULL;
}

kbdctx = (xkbcommon_context *)malloc(sizeof(xkbcommon_context));
kbdctx->ctx = NULL;
kbdctx->keymap = NULL;
kbdctx->state = NULL;

kbdctx->ctx = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
if (!kbdctx->ctx)
{
xkbcommon_free(kbdctx);
return NULL;
}

device_id = xkb_x11_get_core_keyboard_device_id(conn);
if (device_id == -1)
{
xkbcommon_free(kbdctx);
return NULL;
}

kbdctx->keymap = xkb_x11_keymap_new_from_device(kbdctx->ctx, conn, device_id, XKB_KEYMAP_COMPILE_NO_FLAGS);
if (!kbdctx->keymap)
{
xkbcommon_free(kbdctx);
return NULL;
}

kbdctx->state = xkb_x11_state_new_from_device(kbdctx->keymap, conn, device_id);
if (!kbdctx->state)
{
xkbcommon_free(kbdctx);
return NULL;
}

return kbdctx;
}

NK_INTERN void xkbcommon_free(xkbcommon_context *kbdctx)
{
if (kbdctx != NULL)
{
if (kbdctx->state) xkb_state_unref(kbdctx->state);
if (kbdctx->keymap) xkb_keymap_unref(kbdctx->keymap);
if (kbdctx->ctx) xkb_context_unref(kbdctx->ctx);

kbdctx->ctx = NULL;
kbdctx->keymap = NULL;
kbdctx->state = NULL;

free(kbdctx);
}
}

NK_INTERN xkb_keysym_t keycode_to_keysym(nk_xcb_context *ctx, xkb_keycode_t keycode, int pressed)
{
xkb_keysym_t keysym;
xkbcommon_context *kbdctx = ctx->xkbcommon_ctx;

if (kbdctx != NULL)
{
keysym = xkb_state_key_get_one_sym(kbdctx->state, keycode);

/*xkb_state_component changed = */
xkb_state_update_key(kbdctx->state, keycode, pressed ? XKB_KEY_DOWN : XKB_KEY_UP);
}
else
{
keysym = 0;
}

return keysym;
}

#endif /* NK_XCB_CAIRO_IMPLEMENTATION */

0 comments on commit 38d6339

Please sign in to comment.