1 /*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2016 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_FRONTEND_H
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_FRONTEND_H
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_FRONTEND_H */
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 return SDL_IME_Init_Real();
92
93 return SDL_FALSE;
94 }
95
96 void
SDL_IME_Quit(void)97 SDL_IME_Quit(void)
98 {
99 if (SDL_IME_Quit_Real)
100 SDL_IME_Quit_Real();
101 }
102
103 void
SDL_IME_SetFocus(SDL_bool focused)104 SDL_IME_SetFocus(SDL_bool focused)
105 {
106 if (SDL_IME_SetFocus_Real)
107 SDL_IME_SetFocus_Real(focused);
108 }
109
110 void
SDL_IME_Reset(void)111 SDL_IME_Reset(void)
112 {
113 if (SDL_IME_Reset_Real)
114 SDL_IME_Reset_Real();
115 }
116
117 SDL_bool
SDL_IME_ProcessKeyEvent(Uint32 keysym,Uint32 keycode)118 SDL_IME_ProcessKeyEvent(Uint32 keysym, Uint32 keycode)
119 {
120 if (SDL_IME_ProcessKeyEvent_Real)
121 return SDL_IME_ProcessKeyEvent_Real(keysym, keycode);
122
123 return SDL_FALSE;
124 }
125
126 void
SDL_IME_UpdateTextRect(SDL_Rect * rect)127 SDL_IME_UpdateTextRect(SDL_Rect *rect)
128 {
129 if (SDL_IME_UpdateTextRect_Real)
130 SDL_IME_UpdateTextRect_Real(rect);
131 }
132
133 void
SDL_IME_PumpEvents()134 SDL_IME_PumpEvents()
135 {
136 if (SDL_IME_PumpEvents_Real)
137 SDL_IME_PumpEvents_Real();
138 }
139