1 /*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20 */
21
22 #include "SDL_ime.h"
23 #include "SDL_ibus.h"
24 #include "SDL_fcitx.h"
25
26 typedef SDL_bool (*_SDL_IME_Init)();
27 typedef void (*_SDL_IME_Quit)();
28 typedef void (*_SDL_IME_SetFocus)(SDL_bool);
29 typedef void (*_SDL_IME_Reset)();
30 typedef SDL_bool (*_SDL_IME_ProcessKeyEvent)(Uint32, Uint32);
31 typedef void (*_SDL_IME_UpdateTextRect)(SDL_Rect *);
32 typedef void (*_SDL_IME_PumpEvents)();
33
34 static _SDL_IME_Init SDL_IME_Init_Real = NULL;
35 static _SDL_IME_Quit SDL_IME_Quit_Real = NULL;
36 static _SDL_IME_SetFocus SDL_IME_SetFocus_Real = NULL;
37 static _SDL_IME_Reset SDL_IME_Reset_Real = NULL;
38 static _SDL_IME_ProcessKeyEvent SDL_IME_ProcessKeyEvent_Real = NULL;
39 static _SDL_IME_UpdateTextRect SDL_IME_UpdateTextRect_Real = NULL;
40 static _SDL_IME_PumpEvents SDL_IME_PumpEvents_Real = NULL;
41
42 static void
InitIME()43 InitIME()
44 {
45 static SDL_bool inited = SDL_FALSE;
46 #ifdef HAVE_FCITX
47 const char *im_module = SDL_getenv("SDL_IM_MODULE");
48 const char *xmodifiers = SDL_getenv("XMODIFIERS");
49 #endif
50
51 if (inited == SDL_TRUE)
52 return;
53
54 inited = SDL_TRUE;
55
56 /* See if fcitx IME support is being requested */
57 #ifdef HAVE_FCITX
58 if (!SDL_IME_Init_Real &&
59 ((im_module && SDL_strcmp(im_module, "fcitx") == 0) ||
60 (!im_module && xmodifiers && SDL_strstr(xmodifiers, "@im=fcitx") != NULL))) {
61 SDL_IME_Init_Real = SDL_Fcitx_Init;
62 SDL_IME_Quit_Real = SDL_Fcitx_Quit;
63 SDL_IME_SetFocus_Real = SDL_Fcitx_SetFocus;
64 SDL_IME_Reset_Real = SDL_Fcitx_Reset;
65 SDL_IME_ProcessKeyEvent_Real = SDL_Fcitx_ProcessKeyEvent;
66 SDL_IME_UpdateTextRect_Real = SDL_Fcitx_UpdateTextRect;
67 SDL_IME_PumpEvents_Real = SDL_Fcitx_PumpEvents;
68 }
69 #endif /* HAVE_FCITX */
70
71 /* default to IBus */
72 #ifdef HAVE_IBUS_IBUS_H
73 if (!SDL_IME_Init_Real) {
74 SDL_IME_Init_Real = SDL_IBus_Init;
75 SDL_IME_Quit_Real = SDL_IBus_Quit;
76 SDL_IME_SetFocus_Real = SDL_IBus_SetFocus;
77 SDL_IME_Reset_Real = SDL_IBus_Reset;
78 SDL_IME_ProcessKeyEvent_Real = SDL_IBus_ProcessKeyEvent;
79 SDL_IME_UpdateTextRect_Real = SDL_IBus_UpdateTextRect;
80 SDL_IME_PumpEvents_Real = SDL_IBus_PumpEvents;
81 }
82 #endif /* HAVE_IBUS_IBUS_H */
83 }
84
85 SDL_bool
SDL_IME_Init(void)86 SDL_IME_Init(void)
87 {
88 InitIME();
89
90 if (SDL_IME_Init_Real) {
91 if (SDL_IME_Init_Real()) {
92 return SDL_TRUE;
93 }
94
95 /* uhoh, the IME implementation's init failed! Disable IME support. */
96 SDL_IME_Init_Real = NULL;
97 SDL_IME_Quit_Real = NULL;
98 SDL_IME_SetFocus_Real = NULL;
99 SDL_IME_Reset_Real = NULL;
100 SDL_IME_ProcessKeyEvent_Real = NULL;
101 SDL_IME_UpdateTextRect_Real = NULL;
102 SDL_IME_PumpEvents_Real = NULL;
103 }
104
105 return SDL_FALSE;
106 }
107
108 void
SDL_IME_Quit(void)109 SDL_IME_Quit(void)
110 {
111 if (SDL_IME_Quit_Real)
112 SDL_IME_Quit_Real();
113 }
114
115 void
SDL_IME_SetFocus(SDL_bool focused)116 SDL_IME_SetFocus(SDL_bool focused)
117 {
118 if (SDL_IME_SetFocus_Real)
119 SDL_IME_SetFocus_Real(focused);
120 }
121
122 void
SDL_IME_Reset(void)123 SDL_IME_Reset(void)
124 {
125 if (SDL_IME_Reset_Real)
126 SDL_IME_Reset_Real();
127 }
128
129 SDL_bool
SDL_IME_ProcessKeyEvent(Uint32 keysym,Uint32 keycode)130 SDL_IME_ProcessKeyEvent(Uint32 keysym, Uint32 keycode)
131 {
132 if (SDL_IME_ProcessKeyEvent_Real)
133 return SDL_IME_ProcessKeyEvent_Real(keysym, keycode);
134
135 return SDL_FALSE;
136 }
137
138 void
SDL_IME_UpdateTextRect(SDL_Rect * rect)139 SDL_IME_UpdateTextRect(SDL_Rect *rect)
140 {
141 if (SDL_IME_UpdateTextRect_Real)
142 SDL_IME_UpdateTextRect_Real(rect);
143 }
144
145 void
SDL_IME_PumpEvents()146 SDL_IME_PumpEvents()
147 {
148 if (SDL_IME_PumpEvents_Real)
149 SDL_IME_PumpEvents_Real();
150 }
151
152 /* vi: set ts=4 sw=4 expandtab: */
153