Fixed bug 2824 - Add Fcitx Input Method Support

Weitian Leung Just moved ibus direct call to SDL_IME_* related functions, and adds fcitx IME support (uses DBus, too), enable with env: SDL_IM_MODULE=fcitx (ibus still the default one)
2025-09-08 04:18:14 +00:00 · 2016-10-07 18:57:40 -07:00
parent 89abbbfe9e
commit 808c75d1cf
10 changed files with 967 additions and 22 deletions
--- a/src/core/linux/SDL_ime.c
+++ b/src/core/linux/SDL_ime.c
@@ -0,0 +1,135 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2016 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_ime.h"
+#include "SDL_ibus.h"
+#include "SDL_fcitx.h"
+
+typedef SDL_bool (*_SDL_IME_Init)();
+typedef void (*_SDL_IME_Quit)();
+typedef void (*_SDL_IME_SetFocus)(SDL_bool);
+typedef void (*_SDL_IME_Reset)();
+typedef SDL_bool (*_SDL_IME_ProcessKeyEvent)(Uint32, Uint32);
+typedef void (*_SDL_IME_UpdateTextRect)(SDL_Rect *);
+typedef void (*_SDL_IME_PumpEvents)();
+
+static _SDL_IME_Init SDL_IME_Init_Real = NULL;
+static _SDL_IME_Quit SDL_IME_Quit_Real = NULL;
+static _SDL_IME_SetFocus SDL_IME_SetFocus_Real = NULL;
+static _SDL_IME_Reset SDL_IME_Reset_Real = NULL;
+static _SDL_IME_ProcessKeyEvent SDL_IME_ProcessKeyEvent_Real = NULL;
+static _SDL_IME_UpdateTextRect SDL_IME_UpdateTextRect_Real = NULL;
+static _SDL_IME_PumpEvents SDL_IME_PumpEvents_Real = NULL;
+
+static void
+InitIME()
+{
+    static SDL_bool inited = SDL_FALSE;
+    const char *im_module = NULL;
+
+    if (inited == SDL_TRUE)
+        return ;
+
+    inited = SDL_TRUE;
+    // TODO:
+    // better move every ime implenment to a shared library
+
+    // default to IBus
+#ifdef HAVE_IBUS_IBUS_H
+    SDL_IME_Init_Real = SDL_IBus_Init;
+    SDL_IME_Quit_Real = SDL_IBus_Quit;
+    SDL_IME_SetFocus_Real = SDL_IBus_SetFocus;
+    SDL_IME_Reset_Real = SDL_IBus_Reset;
+    SDL_IME_ProcessKeyEvent_Real = SDL_IBus_ProcessKeyEvent;
+    SDL_IME_UpdateTextRect_Real = SDL_IBus_UpdateTextRect;
+    SDL_IME_PumpEvents_Real = SDL_IBus_PumpEvents;
+#endif
+
+    im_module = SDL_getenv("SDL_IM_MODULE");
+    if (im_module) {
+        if (SDL_strcmp(im_module, "fcitx") == 0) {
+#ifdef HAVE_FCITX_FRONTEND_H
+            SDL_IME_Init_Real = SDL_Fcitx_Init;
+            SDL_IME_Quit_Real = SDL_Fcitx_Quit;
+            SDL_IME_SetFocus_Real = SDL_Fcitx_SetFocus;
+            SDL_IME_Reset_Real = SDL_Fcitx_Reset;
+            SDL_IME_ProcessKeyEvent_Real = SDL_Fcitx_ProcessKeyEvent;
+            SDL_IME_UpdateTextRect_Real = SDL_Fcitx_UpdateTextRect;
+            SDL_IME_PumpEvents_Real = SDL_Fcitx_PumpEvents;
+#endif
+        }
+    }
+}
+
+SDL_bool
+SDL_IME_Init(void)
+{
+    InitIME();
+
+    if (SDL_IME_Init_Real)
+        return SDL_IME_Init_Real();
+
+    return SDL_FALSE;
+}
+
+void
+SDL_IME_Quit(void)
+{
+    if (SDL_IME_Quit_Real)
+        SDL_IME_Quit_Real();
+}
+
+void
+SDL_IME_SetFocus(SDL_bool focused)
+{
+    if (SDL_IME_SetFocus_Real)
+        SDL_IME_SetFocus_Real(focused);
+}
+
+void
+SDL_IME_Reset(void)
+{
+    if (SDL_IME_Reset_Real)
+        SDL_IME_Reset_Real();
+}
+
+SDL_bool
+SDL_IME_ProcessKeyEvent(Uint32 keysym, Uint32 keycode)
+{
+    if (SDL_IME_ProcessKeyEvent_Real)
+        return SDL_IME_ProcessKeyEvent_Real(keysym, keycode);
+
+    return SDL_FALSE;
+}
+
+void
+SDL_IME_UpdateTextRect(SDL_Rect *rect)
+{
+    if (SDL_IME_UpdateTextRect_Real)
+        SDL_IME_UpdateTextRect_Real(rect);
+}
+
+void
+SDL_IME_PumpEvents()
+{
+    if (SDL_IME_PumpEvents_Real)
+        SDL_IME_PumpEvents_Real();
+}