Stowage/godot
2
0
Fork 0
mirror of https://github.com/godotengine/godot.git synced 2025-10-19 16:03:29 +00:00
Code Issues Projects Releases Packages Wiki Activity
godot/thirdparty/sdl/core/linux/SDL_fcitx.c
Nintorch 0b3496fb4f
Add support for SDL3 joystick input driver 
Made possible by EIREXE, xsellier and the SDL team.

This commit includes statically linked SDL3 for Windows, Linux and macOS.
The vendored copy of SDL3 was setup to only build the required subsystems
for gamepad/joystick support, with some patches to be able to make it as
minimal as possible and reduce the impact on binary size and code size.

Co-authored-by: Álex Román Núñez <eirexe123@gmail.com>
Co-authored-by: Xavier Sellier <xsellier@gmail.com>
Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>
2025-06-25 01:28:50 +02:00

414 lines
13 KiB
C
Raw Blame History

/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#include <unistd.h>
#include "SDL_fcitx.h"
//#include "../../video/SDL_sysvideo.h"
#include "SDL_dbus.h"
#ifdef SDL_VIDEO_DRIVER_X11
#include "../../video/x11/SDL_x11video.h"
#endif
#define FCITX_DBUS_SERVICE "org.freedesktop.portal.Fcitx"
#define FCITX_IM_DBUS_PATH "/org/freedesktop/portal/inputmethod"
#define FCITX_IM_DBUS_INTERFACE "org.fcitx.Fcitx.InputMethod1"
#define FCITX_IC_DBUS_INTERFACE "org.fcitx.Fcitx.InputContext1"
#define DBUS_TIMEOUT 500
typedef struct FcitxClient
{
SDL_DBusContext *dbus;
char *ic_path;
int id;
SDL_Rect cursor_rect;
} FcitxClient;
static FcitxClient fcitx_client;
static char *GetAppName(void)
{
#if defined(SDL_PLATFORM_LINUX) || defined(SDL_PLATFORM_FREEBSD)
char *spot;
char procfile[1024];
char linkfile[1024];
int linksize;
#ifdef SDL_PLATFORM_LINUX
(void)SDL_snprintf(procfile, sizeof(procfile), "/proc/%d/exe", getpid());
#elif defined(SDL_PLATFORM_FREEBSD)
(void)SDL_snprintf(procfile, sizeof(procfile), "/proc/%d/file", getpid());
#endif
linksize = readlink(procfile, linkfile, sizeof(linkfile) - 1);
if (linksize > 0) {
linkfile[linksize] = '\0';
spot = SDL_strrchr(linkfile, '/');
if (spot) {
return SDL_strdup(spot + 1);
} else {
return SDL_strdup(linkfile);
}
}
#endif // SDL_PLATFORM_LINUX || SDL_PLATFORM_FREEBSD
return SDL_strdup("SDL_App");
}
static size_t Fcitx_GetPreeditString(SDL_DBusContext *dbus,
DBusMessage *msg,
char **ret,
Sint32 *start_pos,
Sint32 *end_pos)
{
char *text = NULL, *subtext;
size_t text_bytes = 0;
DBusMessageIter iter, array, sub;
Sint32 p_start_pos = -1;
Sint32 p_end_pos = -1;
dbus->message_iter_init(msg, &iter);
// Message type is a(si)i, we only need string part
if (dbus->message_iter_get_arg_type(&iter) == DBUS_TYPE_ARRAY) {
size_t pos = 0;
// First pass: calculate string length
dbus->message_iter_recurse(&iter, &array);
while (dbus->message_iter_get_arg_type(&array) == DBUS_TYPE_STRUCT) {
dbus->message_iter_recurse(&array, &sub);
subtext = NULL;
if (dbus->message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING) {
dbus->message_iter_get_basic(&sub, &subtext);
if (subtext && *subtext) {
text_bytes += SDL_strlen(subtext);
}
}
dbus->message_iter_next(&sub);
if (dbus->message_iter_get_arg_type(&sub) == DBUS_TYPE_INT32 && p_end_pos == -1) {
// Type is a bit field defined as follows:
// bit 3: Underline, bit 4: HighLight, bit 5: DontCommit,
// bit 6: Bold, bit 7: Strike, bit 8: Italic
Sint32 type;
dbus->message_iter_get_basic(&sub, &type);
// We only consider highlight
if (type & (1 << 4)) {
if (p_start_pos == -1) {
p_start_pos = pos;
}
} else if (p_start_pos != -1 && p_end_pos == -1) {
p_end_pos = pos;
}
}
dbus->message_iter_next(&array);
if (subtext && *subtext) {
pos += SDL_utf8strlen(subtext);
}
}
if (p_start_pos != -1 && p_end_pos == -1) {
p_end_pos = pos;
}
if (text_bytes) {
text = SDL_malloc(text_bytes + 1);
}
if (text) {
char *pivot = text;
// Second pass: join all the sub string
dbus->message_iter_recurse(&iter, &array);
while (dbus->message_iter_get_arg_type(&array) == DBUS_TYPE_STRUCT) {
dbus->message_iter_recurse(&array, &sub);
if (dbus->message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING) {
dbus->message_iter_get_basic(&sub, &subtext);
if (subtext && *subtext) {
size_t length = SDL_strlen(subtext);
SDL_strlcpy(pivot, subtext, length + 1);
pivot += length;
}
}
dbus->message_iter_next(&array);
}
} else {
text_bytes = 0;
}
}
*ret = text;
*start_pos = p_start_pos;
*end_pos = p_end_pos;
return text_bytes;
}
static Sint32 Fcitx_GetPreeditCursorByte(SDL_DBusContext *dbus, DBusMessage *msg)
{
Sint32 byte = -1;
DBusMessageIter iter;
dbus->message_iter_init(msg, &iter);
dbus->message_iter_next(&iter);
if (dbus->message_iter_get_arg_type(&iter) != DBUS_TYPE_INT32) {
return -1;
}
dbus->message_iter_get_basic(&iter, &byte);
return byte;
}
static DBusHandlerResult DBus_MessageFilter(DBusConnection *conn, DBusMessage *msg, void *data)
{
SDL_DBusContext *dbus = (SDL_DBusContext *)data;
if (dbus->message_is_signal(msg, FCITX_IC_DBUS_INTERFACE, "CommitString")) {
DBusMessageIter iter;
const char *text = NULL;
dbus->message_iter_init(msg, &iter);
dbus->message_iter_get_basic(&iter, &text);
//SDL_SendKeyboardText(text);
return DBUS_HANDLER_RESULT_HANDLED;
}
if (dbus->message_is_signal(msg, FCITX_IC_DBUS_INTERFACE, "UpdateFormattedPreedit")) {
char *text = NULL;
Sint32 start_pos, end_pos;
size_t text_bytes = Fcitx_GetPreeditString(dbus, msg, &text, &start_pos, &end_pos);
if (text_bytes) {
if (start_pos == -1) {
Sint32 byte_pos = Fcitx_GetPreeditCursorByte(dbus, msg);
start_pos = byte_pos >= 0 ? SDL_utf8strnlen(text, byte_pos) : -1;
}
//SDL_SendEditingText(text, start_pos, end_pos >= 0 ? end_pos - start_pos : -1);
SDL_free(text);
} else {
//SDL_SendEditingText("", 0, 0);
}
//SDL_Fcitx_UpdateTextInputArea(SDL_GetKeyboardFocus());
return DBUS_HANDLER_RESULT_HANDLED;
}
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
static void FcitxClientICCallMethod(FcitxClient *client, const char *method)
{
if (!client->ic_path) {
return;
}
SDL_DBus_CallVoidMethod(FCITX_DBUS_SERVICE, client->ic_path, FCITX_IC_DBUS_INTERFACE, method, DBUS_TYPE_INVALID);
}
static void SDLCALL Fcitx_SetCapabilities(void *data,
const char *name,
const char *old_val,
const char *hint)
{
FcitxClient *client = (FcitxClient *)data;
Uint64 caps = 0;
if (!client->ic_path) {
return;
}
if (hint && SDL_strstr(hint, "composition")) {
caps |= (1 << 1); // Preedit Flag
caps |= (1 << 4); // Formatted Preedit Flag
}
if (hint && SDL_strstr(hint, "candidates")) {
// FIXME, turn off native candidate rendering
}
SDL_DBus_CallVoidMethod(FCITX_DBUS_SERVICE, client->ic_path, FCITX_IC_DBUS_INTERFACE, "SetCapability", DBUS_TYPE_UINT64, &caps, DBUS_TYPE_INVALID);
}
static bool FcitxCreateInputContext(SDL_DBusContext *dbus, const char *appname, char **ic_path)
{
const char *program = "program";
bool result = false;
if (dbus && dbus->session_conn) {
DBusMessage *msg = dbus->message_new_method_call(FCITX_DBUS_SERVICE, FCITX_IM_DBUS_PATH, FCITX_IM_DBUS_INTERFACE, "CreateInputContext");
if (msg) {
DBusMessage *reply = NULL;
DBusMessageIter args, array, sub;
dbus->message_iter_init_append(msg, &args);
dbus->message_iter_open_container(&args, DBUS_TYPE_ARRAY, "(ss)", &array);
dbus->message_iter_open_container(&array, DBUS_TYPE_STRUCT, 0, &sub);
dbus->message_iter_append_basic(&sub, DBUS_TYPE_STRING, &program);
dbus->message_iter_append_basic(&sub, DBUS_TYPE_STRING, &appname);
dbus->message_iter_close_container(&array, &sub);
dbus->message_iter_close_container(&args, &array);
reply = dbus->connection_send_with_reply_and_block(dbus->session_conn, msg, 300, NULL);
if (reply) {
if (dbus->message_get_args(reply, NULL, DBUS_TYPE_OBJECT_PATH, ic_path, DBUS_TYPE_INVALID)) {
result = true;
}
dbus->message_unref(reply);
}
dbus->message_unref(msg);
}
}
return result;
}
static bool FcitxClientCreateIC(FcitxClient *client)
{
char *appname = GetAppName();
char *ic_path = NULL;
SDL_DBusContext *dbus = client->dbus;
// SDL_DBus_CallMethod cannot handle a(ss) type, call dbus function directly
if (!FcitxCreateInputContext(dbus, appname, &ic_path)) {
ic_path = NULL; // just in case.
}
SDL_free(appname);
if (ic_path) {
SDL_free(client->ic_path);
client->ic_path = SDL_strdup(ic_path);
dbus->bus_add_match(dbus->session_conn,
"type='signal', interface='org.fcitx.Fcitx.InputContext1'",
NULL);
dbus->connection_add_filter(dbus->session_conn,
&DBus_MessageFilter, dbus,
NULL);
dbus->connection_flush(dbus->session_conn);
SDL_AddHintCallback(SDL_HINT_IME_IMPLEMENTED_UI, Fcitx_SetCapabilities, client);
return true;
}
return false;
}
static Uint32 Fcitx_ModState(void)
{
Uint32 fcitx_mods = 0;
SDL_Keymod sdl_mods = SDL_GetModState();
if (sdl_mods & SDL_KMOD_SHIFT) {
fcitx_mods |= (1 << 0);
}
if (sdl_mods & SDL_KMOD_CAPS) {
fcitx_mods |= (1 << 1);
}
if (sdl_mods & SDL_KMOD_CTRL) {
fcitx_mods |= (1 << 2);
}
if (sdl_mods & SDL_KMOD_ALT) {
fcitx_mods |= (1 << 3);
}
if (sdl_mods & SDL_KMOD_NUM) {
fcitx_mods |= (1 << 4);
}
if (sdl_mods & SDL_KMOD_MODE) {
fcitx_mods |= (1 << 7);
}
if (sdl_mods & SDL_KMOD_LGUI) {
fcitx_mods |= (1 << 6);
}
if (sdl_mods & SDL_KMOD_RGUI) {
fcitx_mods |= (1 << 28);
}
return fcitx_mods;
}
bool SDL_Fcitx_Init(void)
{
fcitx_client.dbus = SDL_DBus_GetContext();
fcitx_client.cursor_rect.x = -1;
fcitx_client.cursor_rect.y = -1;
fcitx_client.cursor_rect.w = 0;
fcitx_client.cursor_rect.h = 0;
return FcitxClientCreateIC(&fcitx_client);
}
void SDL_Fcitx_Quit(void)
{
FcitxClientICCallMethod(&fcitx_client, "DestroyIC");
if (fcitx_client.ic_path) {
SDL_free(fcitx_client.ic_path);
fcitx_client.ic_path = NULL;
}
}
void SDL_Fcitx_SetFocus(bool focused)
{
if (focused) {
FcitxClientICCallMethod(&fcitx_client, "FocusIn");
} else {
FcitxClientICCallMethod(&fcitx_client, "FocusOut");
}
}
void SDL_Fcitx_Reset(void)
{
FcitxClientICCallMethod(&fcitx_client, "Reset");
}
bool SDL_Fcitx_ProcessKeyEvent(Uint32 keysym, Uint32 keycode, bool down)
{
Uint32 mod_state = Fcitx_ModState();
Uint32 handled = false;
Uint32 is_release = !down;
Uint32 event_time = 0;
if (!fcitx_client.ic_path) {
return false;
}
if (SDL_DBus_CallMethod(FCITX_DBUS_SERVICE, fcitx_client.ic_path, FCITX_IC_DBUS_INTERFACE, "ProcessKeyEvent",
DBUS_TYPE_UINT32, &keysym, DBUS_TYPE_UINT32, &keycode, DBUS_TYPE_UINT32, &mod_state, DBUS_TYPE_BOOLEAN, &is_release, DBUS_TYPE_UINT32, &event_time, DBUS_TYPE_INVALID,
DBUS_TYPE_BOOLEAN, &handled, DBUS_TYPE_INVALID)) {
if (handled) {
//SDL_Fcitx_UpdateTextInputArea(SDL_GetKeyboardFocus());
return true;
}
}
return false;
}
void SDL_Fcitx_PumpEvents(void)
{
SDL_DBusContext *dbus = fcitx_client.dbus;
DBusConnection *conn = dbus->session_conn;
dbus->connection_read_write(conn, 0);
while (dbus->connection_dispatch(conn) == DBUS_DISPATCH_DATA_REMAINS) {
// Do nothing, actual work happens in DBus_MessageFilter
}
}
Reference in a new issue View git blame Copy permalink