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wine/dlls/winex11.drv/xim.c

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/*
* Functions for further XIM control
*
* Copyright 2003 CodeWeavers, Aric Stewart
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#if 0
#pragma makedep unix
#endif
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "winternl.h"
#include "x11drv.h"
#include "imm.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(xim);
#ifndef HAVE_XICCALLBACK_CALLBACK
#define XICCallback XIMCallback
#define XICProc XIMProc
#endif
struct ime_update
{
struct list entry;
DWORD id;
DWORD cursor_pos;
WCHAR *comp_str;
WCHAR *result_str;
WCHAR buffer[];
};
static pthread_mutex_t ime_mutex = PTHREAD_MUTEX_INITIALIZER;
static struct list ime_updates = LIST_INIT(ime_updates);
static DWORD ime_update_count;
static WCHAR *ime_comp_buf;
static XIMStyle input_style = 0;
static XIMStyle input_style_req = XIMPreeditCallbacks | XIMStatusCallbacks;
static const char *debugstr_xim_style( XIMStyle style )
{
char buffer[1024], *buf = buffer;
buf += sprintf( buf, "preedit" );
if (style & XIMPreeditArea) buf += sprintf( buf, " area" );
if (style & XIMPreeditCallbacks) buf += sprintf( buf, " callbacks" );
if (style & XIMPreeditPosition) buf += sprintf( buf, " position" );
if (style & XIMPreeditNothing) buf += sprintf( buf, " nothing" );
if (style & XIMPreeditNone) buf += sprintf( buf, " none" );
buf += sprintf( buf, ", status" );
if (style & XIMStatusArea) buf += sprintf( buf, " area" );
if (style & XIMStatusCallbacks) buf += sprintf( buf, " callbacks" );
if (style & XIMStatusNothing) buf += sprintf( buf, " nothing" );
if (style & XIMStatusNone) buf += sprintf( buf, " none" );
return wine_dbg_sprintf( "%s", buffer );
}
BOOL xim_in_compose_mode(void)
{
return !!ime_comp_buf;
}
static void post_ime_update( HWND hwnd, UINT cursor_pos, WCHAR *comp_str, WCHAR *result_str )
{
UINT id, comp_len, result_len;
struct ime_update *update;
comp_len = comp_str ? wcslen( comp_str ) + 1 : 0;
result_len = result_str ? wcslen( result_str ) + 1 : 0;
if (!(update = malloc( offsetof(struct ime_update, buffer[comp_len + result_len]) ))) return;
update->cursor_pos = cursor_pos;
update->comp_str = comp_str ? memcpy( update->buffer, comp_str, comp_len * sizeof(WCHAR) ) : NULL;
update->result_str = result_str ? memcpy( update->buffer + comp_len, result_str, result_len * sizeof(WCHAR) ) : NULL;
pthread_mutex_lock( &ime_mutex );
id = update->id = ++ime_update_count;
list_add_tail( &ime_updates, &update->entry );
pthread_mutex_unlock( &ime_mutex );
NtUserPostMessage( hwnd, WM_IME_NOTIFY, IMN_WINE_SET_COMP_STRING, id );
}
static void xim_update_comp_string( UINT offset, UINT old_len, const WCHAR *text, UINT new_len )
{
UINT len = ime_comp_buf ? wcslen( ime_comp_buf ) : 0;
int diff = new_len - old_len;
WCHAR *ptr;
TRACE( "offset %u, old_len %u, text %s\n", offset, old_len, debugstr_wn(text, new_len) );
if (!(ptr = realloc( ime_comp_buf, (len + max(0, diff) + 1) * sizeof(WCHAR) )))
{
ERR( "Failed to reallocate composition string buffer\n" );
return;
}
ime_comp_buf = ptr;
ptr = ime_comp_buf + offset;
memmove( ptr + new_len, ptr + old_len, (len - offset - old_len) * sizeof(WCHAR) );
if (text) memcpy( ptr, text, new_len * sizeof(WCHAR) );
ime_comp_buf[len + diff] = 0;
}
void xim_set_result_string( HWND hwnd, const char *str, UINT count )
{
WCHAR *output;
DWORD len;
TRACE( "hwnd %p, string %s\n", hwnd, debugstr_an(str, count) );
if (!(output = malloc( (count + 1) * sizeof(WCHAR) ))) return;
len = ntdll_umbstowcs( str, count, output, count );
output[len] = 0;
post_ime_update( hwnd, 0, NULL, output );
free( output );
}
static BOOL xic_preedit_state_notify( XIC xic, XPointer user, XPointer arg )
{
XIMPreeditStateNotifyCallbackStruct *params = (void *)arg;
const XIMPreeditState state = params->state;
HWND hwnd = (HWND)user;
TRACE( "xic %p, hwnd %p, state %lu\n", xic, hwnd, state );
switch (state)
{
case XIMPreeditEnable:
NtUserPostMessage( hwnd, WM_IME_NOTIFY, IMN_WINE_SET_OPEN_STATUS, TRUE );
break;
case XIMPreeditDisable:
NtUserPostMessage( hwnd, WM_IME_NOTIFY, IMN_WINE_SET_OPEN_STATUS, FALSE );
break;
}
return TRUE;
}
static int xic_preedit_start( XIC xic, XPointer user, XPointer arg )
{
HWND hwnd = (HWND)user;
TRACE( "xic %p, hwnd %p, arg %p\n", xic, hwnd, arg );
if ((ime_comp_buf = realloc( ime_comp_buf, sizeof(WCHAR) ))) *ime_comp_buf = 0;
else ERR( "Failed to allocate preedit buffer\n" );
NtUserPostMessage( hwnd, WM_IME_NOTIFY, IMN_WINE_SET_OPEN_STATUS, TRUE );
post_ime_update( hwnd, 0, ime_comp_buf, NULL );
return -1;
}
static int xic_preedit_done( XIC xic, XPointer user, XPointer arg )
{
HWND hwnd = (HWND)user;
TRACE( "xic %p, hwnd %p, arg %p\n", xic, hwnd, arg );
free( ime_comp_buf );
ime_comp_buf = NULL;
post_ime_update( hwnd, 0, NULL, NULL );
NtUserPostMessage( hwnd, WM_IME_NOTIFY, IMN_WINE_SET_OPEN_STATUS, FALSE );
return 0;
}
static int xic_preedit_draw( XIC xic, XPointer user, XPointer arg )
{
XIMPreeditDrawCallbackStruct *params = (void *)arg;
HWND hwnd = (HWND)user;
size_t text_len;
XIMText *text;
WCHAR *output;
char *str;
int len;
TRACE( "xic %p, hwnd %p, arg %p\n", xic, hwnd, arg );
if (!params) return 0;
if (!(text = params->text)) str = NULL;
else if (!text->encoding_is_wchar) str = text->string.multi_byte;
else if ((len = wcstombs( NULL, text->string.wide_char, text->length )) < 0) str = NULL;
else if ((str = malloc( len + 1 )))
{
wcstombs( str, text->string.wide_char, len );
str[len] = 0;
}
if (!str || !(text_len = strlen( str )) || !(output = malloc( text_len * sizeof(WCHAR) )))
xim_update_comp_string( params->chg_first, params->chg_length, NULL, 0 );
else
{
text_len = ntdll_umbstowcs( str, text_len, output, text_len );
xim_update_comp_string( params->chg_first, params->chg_length, output, text_len );
free( output );
}
if (text && str != text->string.multi_byte) free( str );
post_ime_update( hwnd, params->caret, ime_comp_buf, NULL );
return 0;
}
static int xic_preedit_caret( XIC xic, XPointer user, XPointer arg )
{
static int xim_caret_pos;
XIMPreeditCaretCallbackStruct *params = (void *)arg;
HWND hwnd = (HWND)user;
int pos;
TRACE( "xic %p, hwnd %p, arg %p\n", xic, hwnd, arg );
if (!params) return 0;
pos = xim_caret_pos;
switch (params->direction)
{
case XIMForwardChar:
case XIMForwardWord:
pos++;
break;
case XIMBackwardChar:
case XIMBackwardWord:
pos--;
break;
case XIMLineStart:
pos = 0;
break;
case XIMAbsolutePosition:
pos = params->position;
break;
case XIMDontChange:
params->position = pos;
return 0;
case XIMCaretUp:
case XIMCaretDown:
case XIMPreviousLine:
case XIMNextLine:
case XIMLineEnd:
FIXME( "Not implemented\n" );
break;
}
params->position = xim_caret_pos = pos;
post_ime_update( hwnd, pos, ime_comp_buf, NULL );
return 0;
}
static int xic_status_start( XIC xic, XPointer user, XPointer arg )
{
HWND hwnd = (HWND)user;
TRACE( "xic %p, hwnd %p, arg %p\n", xic, hwnd, arg );
return 0;
}
static int xic_status_done( XIC xic, XPointer user, XPointer arg )
{
HWND hwnd = (HWND)user;
TRACE( "xic %p, hwnd %p, arg %p\n", xic, hwnd, arg );
return 0;
}
static int xic_status_draw( XIC xic, XPointer user, XPointer arg )
{
HWND hwnd = (HWND)user;
TRACE( "xic %p, hwnd %p, arg %p\n", xic, hwnd, arg );
return 0;
}
/***********************************************************************
* NotifyIMEStatus (X11DRV.@)
*/
void X11DRV_NotifyIMEStatus( HWND hwnd, UINT status )
{
XIMPreeditState state = status ? XIMPreeditEnable : XIMPreeditDisable;
XVaNestedList attr;
XIC xic;
TRACE( "hwnd %p, status %#x\n", hwnd, status );
if (!(xic = X11DRV_get_ic( hwnd ))) return;
if ((attr = XVaCreateNestedList( 0, XNPreeditState, state, NULL )))
{
XSetICValues( xic, XNPreeditAttributes, attr, NULL );
XFree( attr );
}
if (!status) XFree( XmbResetIC( xic ) );
}
/***********************************************************************
* xim_init
*/
BOOL xim_init( const WCHAR *input_style )
{
static const WCHAR offthespotW[] = {'o','f','f','t','h','e','s','p','o','t',0};
static const WCHAR overthespotW[] = {'o','v','e','r','t','h','e','s','p','o','t',0};
static const WCHAR rootW[] = {'r','o','o','t',0};
if (!XSupportsLocale())
{
WARN("X does not support locale.\n");
return FALSE;
}
if (XSetLocaleModifiers("") == NULL)
{
WARN("Could not set locale modifiers.\n");
return FALSE;
}
if (!wcsicmp( input_style, offthespotW ))
input_style_req = XIMPreeditArea | XIMStatusArea;
else if (!wcsicmp( input_style, overthespotW ))
input_style_req = XIMPreeditPosition | XIMStatusNothing;
else if (!wcsicmp( input_style, rootW ))
input_style_req = XIMPreeditNothing | XIMStatusNothing;
TRACE( "requesting %s style %#lx %s\n", debugstr_w(input_style), input_style_req,
debugstr_xim_style( input_style_req ) );
return TRUE;
}
static void xim_open( Display *display, XPointer user, XPointer arg );
static void xim_destroy( XIM xim, XPointer user, XPointer arg );
static XIM xim_create( struct x11drv_thread_data *data )
{
XIMCallback destroy = {.callback = xim_destroy, .client_data = (XPointer)data};
XIMStyle input_style_fallback = XIMPreeditNone | XIMStatusNone;
XIMStyles *styles = NULL;
INT i;
XIM xim;
if (!(xim = XOpenIM( data->display, NULL, NULL, NULL )))
{
WARN("Could not open input method.\n");
return NULL;
}
if (XSetIMValues( xim, XNDestroyCallback, &destroy, NULL ))
WARN( "Could not set destroy callback.\n" );
TRACE( "xim %p, XDisplayOfIM %p, XLocaleOfIM %s\n", xim, XDisplayOfIM( xim ),
debugstr_a(XLocaleOfIM( xim )) );
XGetIMValues( xim, XNQueryInputStyle, &styles, NULL );
if (!styles)
{
WARN( "Could not find supported input style.\n" );
XCloseIM( xim );
return NULL;
}
TRACE( "input styles count %u\n", styles->count_styles );
for (i = 0, input_style = 0; i < styles->count_styles; ++i)
{
XIMStyle style = styles->supported_styles[i];
TRACE( " %u: %#lx %s\n", i, style, debugstr_xim_style( style ) );
if (style == input_style_req) input_style = style;
if (!input_style && (style & input_style_req)) input_style = style;
if (input_style_fallback > style) input_style_fallback = style;
}
XFree(styles);
if (!input_style) input_style = input_style_fallback;
TRACE( "selected style %#lx %s\n", input_style, debugstr_xim_style( input_style ) );
return xim;
}
static void xim_open( Display *display, XPointer user, XPointer arg )
{
struct x11drv_thread_data *data = (void *)user;
TRACE( "display %p, data %p, arg %p\n", display, user, arg );
if (!(data->xim = xim_create( data ))) return;
XUnregisterIMInstantiateCallback( display, NULL, NULL, NULL, xim_open, user );
}
static void xim_destroy( XIM xim, XPointer user, XPointer arg )
{
struct x11drv_thread_data *data = x11drv_thread_data();
TRACE( "xim %p, user %p, arg %p\n", xim, user, arg );
if (data->xim != xim) return;
data->xim = NULL;
XRegisterIMInstantiateCallback( data->display, NULL, NULL, NULL, xim_open, user );
}
void xim_thread_attach( struct x11drv_thread_data *data )
{
Display *display = data->display;
int i, count;
char **list;
data->font_set = XCreateFontSet( display, "fixed", &list, &count, NULL );
TRACE( "created XFontSet %p, list %p, count %d\n", data->font_set, list, count );
for (i = 0; list && i < count; ++i) TRACE( " %d: %s\n", i, list[i] );
if (list) XFreeStringList( list );
if ((data->xim = xim_create( data ))) return;
XRegisterIMInstantiateCallback( display, NULL, NULL, NULL, xim_open, (XPointer)data );
}
static BOOL xic_destroy( XIC xic, XPointer user, XPointer arg )
{
struct x11drv_win_data *data;
HWND hwnd = (HWND)user;
TRACE( "xic %p, hwnd %p, arg %p\n", xic, hwnd, arg );
if ((data = get_win_data( hwnd )))
{
if (data->xic == xic) data->xic = NULL;
release_win_data( data );
}
return TRUE;
}
static XIC xic_create( XIM xim, HWND hwnd, Window win )
{
XICCallback destroy = {.callback = xic_destroy, .client_data = (XPointer)hwnd};
XICCallback preedit_caret = {.callback = xic_preedit_caret, .client_data = (XPointer)hwnd};
XICCallback preedit_done = {.callback = xic_preedit_done, .client_data = (XPointer)hwnd};
XICCallback preedit_draw = {.callback = xic_preedit_draw, .client_data = (XPointer)hwnd};
XICCallback preedit_start = {.callback = xic_preedit_start, .client_data = (XPointer)hwnd};
XICCallback preedit_state_notify = {.callback = xic_preedit_state_notify, .client_data = (XPointer)hwnd};
XICCallback status_done = {.callback = xic_status_done, .client_data = (XPointer)hwnd};
XICCallback status_draw = {.callback = xic_status_draw, .client_data = (XPointer)hwnd};
XICCallback status_start = {.callback = xic_status_start, .client_data = (XPointer)hwnd};
XPoint spot = {0};
XVaNestedList preedit, status;
XIC xic;
XFontSet fontSet = x11drv_thread_data()->font_set;
TRACE( "xim %p, hwnd %p/%lx\n", xim, hwnd, win );
preedit = XVaCreateNestedList( 0, XNFontSet, fontSet,
XNPreeditCaretCallback, &preedit_caret,
XNPreeditDoneCallback, &preedit_done,
XNPreeditDrawCallback, &preedit_draw,
XNPreeditStartCallback, &preedit_start,
XNPreeditStateNotifyCallback, &preedit_state_notify,
XNSpotLocation, &spot, NULL );
status = XVaCreateNestedList( 0, XNFontSet, fontSet,
XNStatusStartCallback, &status_start,
XNStatusDoneCallback, &status_done,
XNStatusDrawCallback, &status_draw,
NULL );
xic = XCreateIC( xim, XNInputStyle, input_style, XNPreeditAttributes, preedit, XNStatusAttributes, status,
XNClientWindow, win, XNFocusWindow, win, XNDestroyCallback, &destroy, NULL );
TRACE( "created XIC %p\n", xic );
XFree( preedit );
XFree( status );
return xic;
}
XIC X11DRV_get_ic( HWND hwnd )
{
struct x11drv_win_data *data;
XIM xim;
XIC ret;
if (!(data = get_win_data( hwnd ))) return 0;
x11drv_thread_data()->last_xic_hwnd = hwnd;
if (!(ret = data->xic) && (xim = x11drv_thread_data()->xim))
ret = data->xic = xic_create( xim, hwnd, data->whole_window );
release_win_data( data );
return ret;
}
void xim_set_focus( HWND hwnd, BOOL focus )
{
struct list updates = LIST_INIT(updates);
struct ime_update *update, *next;
XIC xic;
if (!(xic = X11DRV_get_ic( hwnd ))) return;
if (focus) XSetICFocus( xic );
else XUnsetICFocus( xic );
pthread_mutex_lock( &ime_mutex );
list_move_tail( &updates, &ime_updates );
pthread_mutex_unlock( &ime_mutex );
LIST_FOR_EACH_ENTRY_SAFE( update, next, &updates, struct ime_update, entry ) free( update );
}
static struct ime_update *find_ime_update( UINT id )
{
struct ime_update *update;
LIST_FOR_EACH_ENTRY( update, &ime_updates, struct ime_update, entry )
if (update->id == id) return update;
return NULL;
}
/***********************************************************************
* ImeToAsciiEx (X11DRV.@)
*
* As XIM filters key events upfront, we don't use ImeProcessKey and ImeToAsciiEx is instead called
* back from the IME UI window procedure when WM_IME_NOTIFY / IMN_WINE_SET_COMP_STRING messages are
* sent to it, to retrieve composition string updates and generate WM_IME messages.
*/
UINT X11DRV_ImeToAsciiEx( UINT vkey, UINT lparam, const BYTE *state, COMPOSITIONSTRING *compstr, HIMC himc )
{
UINT needed = sizeof(COMPOSITIONSTRING), comp_len, result_len;
struct ime_update *update;
void *dst;
TRACE( "vkey %#x, lparam %#x, state %p, compstr %p, himc %p\n", vkey, lparam, state, compstr, himc );
pthread_mutex_lock( &ime_mutex );
if (!(update = find_ime_update( lparam )))
{
pthread_mutex_unlock( &ime_mutex );
return 0;
}
if (!update->comp_str) comp_len = 0;
else
{
comp_len = wcslen( update->comp_str );
needed += comp_len * sizeof(WCHAR); /* GCS_COMPSTR */
needed += comp_len; /* GCS_COMPATTR */
needed += 2 * sizeof(DWORD); /* GCS_COMPCLAUSE */
}
if (!update->result_str) result_len = 0;
else
{
result_len = wcslen( update->result_str );
needed += result_len * sizeof(WCHAR); /* GCS_RESULTSTR */
needed += 2 * sizeof(DWORD); /* GCS_RESULTCLAUSE */
}
if (compstr->dwSize < needed)
{
compstr->dwSize = needed;
pthread_mutex_unlock( &ime_mutex );
return STATUS_BUFFER_TOO_SMALL;
}
list_remove( &update->entry );
pthread_mutex_unlock( &ime_mutex );
memset( compstr, 0, sizeof(*compstr) );
compstr->dwSize = sizeof(*compstr);
if (update->comp_str)
{
compstr->dwCursorPos = update->cursor_pos;
compstr->dwCompStrLen = comp_len;
compstr->dwCompStrOffset = compstr->dwSize;
dst = (BYTE *)compstr + compstr->dwCompStrOffset;
memcpy( dst, update->comp_str, compstr->dwCompStrLen * sizeof(WCHAR) );
compstr->dwSize += compstr->dwCompStrLen * sizeof(WCHAR);
compstr->dwCompClauseLen = 2 * sizeof(DWORD);
compstr->dwCompClauseOffset = compstr->dwSize;
dst = (BYTE *)compstr + compstr->dwCompClauseOffset;
*((DWORD *)dst + 0) = 0;
*((DWORD *)dst + 1) = compstr->dwCompStrLen;
compstr->dwSize += compstr->dwCompClauseLen;
compstr->dwCompAttrLen = compstr->dwCompStrLen;
compstr->dwCompAttrOffset = compstr->dwSize;
dst = (BYTE *)compstr + compstr->dwCompAttrOffset;
memset( dst, ATTR_INPUT, compstr->dwCompAttrLen );
compstr->dwSize += compstr->dwCompAttrLen;
}
if (update->result_str)
{
compstr->dwResultStrLen = result_len;
compstr->dwResultStrOffset = compstr->dwSize;
dst = (BYTE *)compstr + compstr->dwResultStrOffset;
memcpy( dst, update->result_str, compstr->dwResultStrLen * sizeof(WCHAR) );
compstr->dwSize += compstr->dwResultStrLen * sizeof(WCHAR);
compstr->dwResultClauseLen = 2 * sizeof(DWORD);
compstr->dwResultClauseOffset = compstr->dwSize;
dst = (BYTE *)compstr + compstr->dwResultClauseOffset;
*((DWORD *)dst + 0) = 0;
*((DWORD *)dst + 1) = compstr->dwResultStrLen;
compstr->dwSize += compstr->dwResultClauseLen;
}
free( update );
return 0;
}
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