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Fixed bug 5103 - Port fcitx support to both fcitx 4 & 5

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Due to the new major fcitx version is coming close, the existing code need to be ported to use new Fcitx dbus interface.

The new dbus interface is supported by both fcitx 4 and 5, and has a good side effect, which is that it will work with flatpak for free. Also the patch remove the dependency on fcitx header. Instead, it just hardcodes a few enum value in the code so need to handle the different header for fcitx4 or 5.
This commit is contained in:
Sam Lantinga
2020-05-11 14:31:04 -07:00
parent 33642b47b2
commit eadc8693dd
9 changed files with 160 additions and 113 deletions
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219
src/core/linux/SDL_fcitx.c
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@@ -20,9 +20,6 @@
*/
#include "../../SDL_internal.h"
#ifdef HAVE_FCITX_FRONTEND_H
#include <fcitx/frontend.h>
#include <unistd.h>
#include "SDL_fcitx.h"
@@ -36,23 +33,20 @@
#endif
#include "SDL_hints.h"
#define FCITX_DBUS_SERVICE "org.fcitx.Fcitx"
#define FCITX_DBUS_SERVICE "org.freedesktop.portal.Fcitx"
#define FCITX_IM_DBUS_PATH "/inputmethod"
#define FCITX_IC_DBUS_PATH "/inputcontext_%d"
#define FCITX_IM_DBUS_PATH "/org/freedesktop/portal/inputmethod"
#define FCITX_IM_DBUS_INTERFACE "org.fcitx.Fcitx.InputMethod"
#define FCITX_IC_DBUS_INTERFACE "org.fcitx.Fcitx.InputContext"
#define FCITX_IM_DBUS_INTERFACE "org.fcitx.Fcitx.InputMethod1"
#define FCITX_IC_DBUS_INTERFACE "org.fcitx.Fcitx.InputContext1"
#define IC_NAME_MAX 64
#define DBUS_TIMEOUT 500
typedef struct _FcitxClient
{
SDL_DBusContext *dbus;
char servicename[IC_NAME_MAX];
char icname[IC_NAME_MAX];
char *ic_path;
int id;
@@ -61,34 +55,6 @@ typedef struct _FcitxClient
static FcitxClient fcitx_client;
static int
GetDisplayNumber()
{
const char *display = SDL_getenv("DISPLAY");
const char *p = NULL;
int number = 0;
if (display == NULL)
return 0;
display = SDL_strchr(display, ':');
if (display == NULL)
return 0;
display++;
p = SDL_strchr(display, '.');
if (p == NULL && display != NULL) {
number = SDL_strtod(display, NULL);
} else {
char *buffer = SDL_strdup(display);
buffer[p - display] = '\0';
number = SDL_strtod(buffer, NULL);
SDL_free(buffer);
}
return number;
}
static char*
GetAppName()
{
@@ -118,6 +84,54 @@ GetAppName()
return SDL_strdup("SDL_App");
}
size_t Fcitx_GetPreeditString(SDL_DBusContext *dbus, DBusMessage *msg, char **ret) {
char *text = NULL, *subtext;
size_t text_bytes = 0;
DBusMessageIter iter, array, sub;
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) {
/* 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);
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(&array);
}
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;
return text_bytes;
}
static DBusHandlerResult
DBus_MessageFilter(DBusConnection *conn, DBusMessage *msg, void *data)
{
@@ -136,16 +150,12 @@ DBus_MessageFilter(DBusConnection *conn, DBusMessage *msg, void *data)
return DBUS_HANDLER_RESULT_HANDLED;
}
if (dbus->message_is_signal(msg, FCITX_IC_DBUS_INTERFACE, "UpdatePreedit")) {
DBusMessageIter iter;
const char *text;
dbus->message_iter_init(msg, &iter);
dbus->message_iter_get_basic(&iter, &text);
if (text && *text) {
if (dbus->message_is_signal(msg, FCITX_IC_DBUS_INTERFACE, "UpdateFormattedPreedit")) {
char *text = NULL;
size_t text_bytes = Fcitx_GetPreeditString(dbus, msg, &text);
if (text_bytes) {
char buf[SDL_TEXTEDITINGEVENT_TEXT_SIZE];
size_t text_bytes = SDL_strlen(text), i = 0;
size_t i = 0;
size_t cursor = 0;
while (i < text_bytes) {
@@ -157,6 +167,9 @@ DBus_MessageFilter(DBusConnection *conn, DBusMessage *msg, void *data)
i += sz;
cursor += chars;
}
SDL_free(text);
} else {
SDL_SendEditingText("", 0, 0);
}
SDL_Fcitx_UpdateTextRect(NULL);
@@ -169,7 +182,10 @@ DBus_MessageFilter(DBusConnection *conn, DBusMessage *msg, void *data)
static void
FcitxClientICCallMethod(FcitxClient *client, const char *method)
{
SDL_DBus_CallVoidMethod(client->servicename, client->icname, FCITX_IC_DBUS_INTERFACE, method, DBUS_TYPE_INVALID);
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
@@ -179,40 +195,68 @@ Fcitx_SetCapabilities(void *data,
const char *internal_editing)
{
FcitxClient *client = (FcitxClient *)data;
Uint32 caps = CAPACITY_NONE;
if (!(internal_editing && *internal_editing == '1')) {
caps |= CAPACITY_PREEDIT;
Uint32 caps = 0;
if (!client->ic_path) {
return;
}
SDL_DBus_CallVoidMethod(client->servicename, client->icname, FCITX_IC_DBUS_INTERFACE, "SetCapacity", DBUS_TYPE_UINT32, &caps, DBUS_TYPE_INVALID);
if (!(internal_editing && *internal_editing == '1')) {
caps |= (1 << 1); /* Preedit Flag */
caps |= (1 << 4); /* Formatted Preedit Flag */
}
SDL_DBus_CallVoidMethod(FCITX_DBUS_SERVICE, client->ic_path, FCITX_IC_DBUS_INTERFACE, "SetCapability", DBUS_TYPE_UINT64, &caps, DBUS_TYPE_INVALID);
}
static SDL_bool
FcitxCreateInputContext(SDL_DBusContext* dbus, const char *appname, char **ic_path) {
const char *program = "program";
SDL_bool retval = SDL_FALSE;
if (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)) {
retval = SDL_TRUE;
}
dbus->message_unref(reply);
}
dbus->message_unref(msg);
}
}
return retval;
}
static SDL_bool
FcitxClientCreateIC(FcitxClient *client)
{
char *appname = GetAppName();
pid_t pid = getpid();
int id = -1;
Uint32 enable, arg1, arg2, arg3, arg4;
char *ic_path = NULL;
SDL_DBusContext *dbus = client->dbus;
if (!SDL_DBus_CallMethod(client->servicename, FCITX_IM_DBUS_PATH, FCITX_IM_DBUS_INTERFACE, "CreateICv3",
DBUS_TYPE_STRING, &appname, DBUS_TYPE_INT32, &pid, DBUS_TYPE_INVALID,
DBUS_TYPE_INT32, &id, DBUS_TYPE_BOOLEAN, &enable, DBUS_TYPE_UINT32, &arg1, DBUS_TYPE_UINT32, &arg2, DBUS_TYPE_UINT32, &arg3, DBUS_TYPE_UINT32, &arg4, DBUS_TYPE_INVALID)) {
id = -1; /* just in case. */
/* 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 (id >= 0) {
SDL_DBusContext *dbus = client->dbus;
client->id = id;
SDL_snprintf(client->icname, IC_NAME_MAX, FCITX_IC_DBUS_PATH, client->id);
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.InputContext'",
"type='signal', interface='org.fcitx.Fcitx.InputContext1'",
NULL);
dbus->connection_add_filter(dbus->session_conn,
&DBus_MessageFilter, dbus,
@@ -232,13 +276,14 @@ Fcitx_ModState(void)
Uint32 fcitx_mods = 0;
SDL_Keymod sdl_mods = SDL_GetModState();
if (sdl_mods & KMOD_SHIFT) fcitx_mods |= FcitxKeyState_Shift;
if (sdl_mods & KMOD_CAPS) fcitx_mods |= FcitxKeyState_CapsLock;
if (sdl_mods & KMOD_CTRL) fcitx_mods |= FcitxKeyState_Ctrl;
if (sdl_mods & KMOD_ALT) fcitx_mods |= FcitxKeyState_Alt;
if (sdl_mods & KMOD_NUM) fcitx_mods |= FcitxKeyState_NumLock;
if (sdl_mods & KMOD_LGUI) fcitx_mods |= FcitxKeyState_Super;
if (sdl_mods & KMOD_RGUI) fcitx_mods |= FcitxKeyState_Meta;
if (sdl_mods & KMOD_SHIFT) fcitx_mods |= (1 << 0);
if (sdl_mods & KMOD_CAPS) fcitx_mods |= (1 << 1);
if (sdl_mods & KMOD_CTRL) fcitx_mods |= (1 << 2);
if (sdl_mods & KMOD_ALT) fcitx_mods |= (1 << 3);
if (sdl_mods & KMOD_NUM) fcitx_mods |= (1 << 4);
if (sdl_mods & KMOD_MODE) fcitx_mods |= (1 << 7);
if (sdl_mods & KMOD_LGUI) fcitx_mods |= (1 << 6);
if (sdl_mods & KMOD_RGUI) fcitx_mods |= (1 << 28);
return fcitx_mods;
}
@@ -253,10 +298,6 @@ SDL_Fcitx_Init()
fcitx_client.cursor_rect.w = 0;
fcitx_client.cursor_rect.h = 0;
SDL_snprintf(fcitx_client.servicename, IC_NAME_MAX,
"%s-%d",
FCITX_DBUS_SERVICE, GetDisplayNumber());
return FcitxClientCreateIC(&fcitx_client);
}
@@ -264,6 +305,10 @@ void
SDL_Fcitx_Quit()
{
FcitxClientICCallMethod(&fcitx_client, "DestroyIC");
if (fcitx_client.ic_path) {
SDL_free(fcitx_client.ic_path);
fcitx_client.ic_path = NULL;
}
}
void
@@ -288,12 +333,16 @@ SDL_Fcitx_ProcessKeyEvent(Uint32 keysym, Uint32 keycode)
{
Uint32 state = Fcitx_ModState();
Uint32 handled = SDL_FALSE;
int type = FCITX_PRESS_KEY;
Uint32 is_release = SDL_FALSE;
Uint32 event_time = 0;
if (SDL_DBus_CallMethod(fcitx_client.servicename, fcitx_client.icname, FCITX_IC_DBUS_INTERFACE, "ProcessKeyEvent",
DBUS_TYPE_UINT32, &keysym, DBUS_TYPE_UINT32, &keycode, DBUS_TYPE_UINT32, &state, DBUS_TYPE_INT32, &type, DBUS_TYPE_UINT32, &event_time, DBUS_TYPE_INVALID,
DBUS_TYPE_INT32, &handled, DBUS_TYPE_INVALID)) {
if (!fcitx_client.ic_path) {
return SDL_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, &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_UpdateTextRect(NULL);
return SDL_TRUE;
@@ -350,7 +399,7 @@ SDL_Fcitx_UpdateTextRect(SDL_Rect *rect)
x += cursor->x;
y += cursor->y;
SDL_DBus_CallVoidMethod(fcitx_client.servicename, fcitx_client.icname, FCITX_IC_DBUS_INTERFACE, "SetCursorRect",
SDL_DBus_CallVoidMethod(FCITX_DBUS_SERVICE, fcitx_client.ic_path, FCITX_IC_DBUS_INTERFACE, "SetCursorRect",
DBUS_TYPE_INT32, &x, DBUS_TYPE_INT32, &y, DBUS_TYPE_INT32, &cursor->w, DBUS_TYPE_INT32, &cursor->h, DBUS_TYPE_INVALID);
}
@@ -368,6 +417,4 @@ SDL_Fcitx_PumpEvents(void)
}
}
#endif /* HAVE_FCITX_FRONTEND_H */
/* vi: set ts=4 sw=4 expandtab: */