xref: /aoo41x/main/vcl/unx/generic/app/i18n_xkb.cxx (revision e78229df)
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21 
22 
23 
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_vcl.hxx"
26 
27 
28 #include <stdio.h>
29 
30 #include "unx/saldisp.hxx"
31 #include "unx/saldata.hxx"
32 #include "unx/i18n_xkb.hxx"
33 
34 SalI18N_KeyboardExtension::SalI18N_KeyboardExtension( Display* pDisplay)
35 :	mbUseExtension( true ),
36 ,	mnDefaultGroup( 0 )
37 {
38 	mpDisplay = pDisplay;
39 
40 	// allow user to set the default keyboard group idx or to disable the usage
41 	// of x keyboard extension at all:
42 	// 		setenv SAL_XKEYBOARDGROUP		disables keyboard extension
43 	// 		setenv SAL_XKEYBOARDGROUP 2		sets the keyboard group index to 2
44 	// keyboard group index must be in [1,4], may be specified in hex or decimal
45 	static char *pUseKeyboardExtension = getenv( "SAL_XKEYBOARDGROUP" );
46 	if ( pUseKeyboardExtension != NULL )
47 	{
48 		mbUseExtension = pUseKeyboardExtension[0] != '\0' ;
49 		if ( mbUseExtension )
50 			mnDefaultGroup = strtol( pUseKeyboardExtension, NULL, 0 );
51 		if ( mnDefaultGroup > XkbMaxKbdGroup )
52 			mnDefaultGroup = 0;
53 	}
54 
55 	// query XServer support for XKB Extension,
56 	// do not call XQueryExtension() / XInitExtension() due to possible version
57 	// clashes !
58 	if ( mbUseExtension )
59 	{
60 		int nMajorExtOpcode;
61 		int nExtMajorVersion = XkbMajorVersion;
62 		int nExtMinorVersion = XkbMinorVersion;
63 
64 		mbUseExtension = (sal_Bool)XkbQueryExtension( mpDisplay,
65 			&nMajorExtOpcode, (int*)&mnEventBase, (int*)&mnErrorBase,
66 			&nExtMajorVersion, &nExtMinorVersion );
67 	}
68 
69 	// query notification for changes of the keyboard group
70 	if ( mbUseExtension )
71 	{
72 		#define XkbGroupMask (  XkbGroupStateMask | XkbGroupBaseMask \
73 						  	  | XkbGroupLatchMask | XkbGroupLockMask )
74 
75 		mbUseExtension = XkbSelectEventDetails( mpDisplay,
76 			XkbUseCoreKbd, XkbStateNotify, XkbGroupMask, XkbGroupMask );
77 	}
78 
79 	// query initial keyboard group
80 	if ( mbUseExtension )
81 	{
82 		XkbStateRec aStateRecord;
83 		XkbGetState( mpDisplay, XkbUseCoreKbd, &aStateRecord );
84 		mnGroup = aStateRecord.group;
85 	}
86 }
87 
88 void
89 SalI18N_KeyboardExtension::Dispatch( XEvent* pEvent)
90 {
91 	// must the event be handled?
92 	if (   !mbUseExtension
93 		|| (pEvent->type != mnEventBase) )
94 		return;
95 
96 	// only handle state notify events for now, and only interested
97 	// in group details
98 	sal_uInt32 nXKBType = ((XkbAnyEvent*)pEvent)->xkb_type;
99 	switch ( nXKBType )
100 	{
101 		case XkbStateNotify:
102 
103 			mnGroup = ((XkbStateNotifyEvent*)pEvent)->group;
104 			break;
105 
106 		default:
107 
108 #if OSL_DEBUG_LEVEL > 1
109 			fprintf(stderr, "Got unrequested XkbAnyEvent %#x/%i\n",
110 				static_cast<unsigned int>(nXKBType), static_cast<int>(nXKBType) );
111 #endif
112 			break;
113 	}
114 }
115 
116 sal_uInt32 SalI18N_KeyboardExtension::LookupKeysymInGroup( sal_uInt32 nKeyCode,
117 	sal_uInt32 nShiftState, sal_uInt32 nGroup ) const
118 {
119 	nShiftState &= ShiftMask;
120 
121 	KeySym nKeySymbol = XkbKeycodeToKeysym( mpDisplay, nKeyCode, nGroup, nShiftState );
122 	return nKeySymbol;
123 }
124 
125 
126