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#include <X11/Xlib.h>
#include "wconfig.h"
#include "WINGsP.h"
typedef struct W_IMContext {
XIM xim;
XIMStyle ximstyle;
} WMIMContext;
static void instantiateIM_cb(Display * display, XPointer client_data, XPointer call_data)
{
/* Parameter not used, but tell the compiler that it is ok */
(void) display;
(void) call_data;
W_InitIM((W_Screen *) client_data);
}
static void destroyIM_cb(XIM xim, XPointer client_data, XPointer call_data)
{
W_Screen *scr = (W_Screen *) client_data;
W_View *target;
/* Parameter not used, but tell the compiler that it is ok */
(void) call_data;
if (scr->imctx->xim != xim)
return;
target = scr->rootView->childrenList;
while (target != NULL) {
W_DestroyIC(target);
target = target->nextSister;
}
wfree(scr->imctx);
scr->imctx = NULL;
XRegisterIMInstantiateCallback(scr->display, NULL, NULL, NULL, instantiateIM_cb, (XPointer) scr);
}
void W_InitIM(W_Screen * scr)
{
XIM xim;
if (scr->imctx)
return;
xim = XOpenIM(scr->display, NULL, NULL, NULL);
if (xim) {
XIMStyles *im_styles;
XIMCallback cb;
int i;
scr->imctx = wmalloc(sizeof(WMIMContext));
scr->imctx->xim = xim;
cb.callback = destroyIM_cb;
cb.client_data = (XPointer) scr;
if (XSetIMValues(scr->imctx->xim, XNDestroyCallback, &cb, NULL))
wwarning(_("could not add destroy callback for XIM input method"));
XUnregisterIMInstantiateCallback(scr->display, NULL, NULL, NULL, instantiateIM_cb, (XPointer) scr);
/* Get available input style */
XGetIMValues(scr->imctx->xim, XNQueryInputStyle, &im_styles, NULL);
scr->imctx->ximstyle = 0;
for (i = 0; i < im_styles->count_styles && scr->imctx->ximstyle == 0; i++) {
if ((im_styles->supported_styles[i] & XIMPreeditPosition) &&
(im_styles->supported_styles[i] & XIMStatusNothing)) {
scr->imctx->ximstyle = XIMPreeditPosition | XIMStatusNothing;
} else if ((im_styles->supported_styles[i] & XIMPreeditNothing) &&
(im_styles->supported_styles[i] & XIMStatusNothing)) {
scr->imctx->ximstyle = XIMPreeditNothing | XIMStatusNothing;
}
}
XFree(im_styles);
} else {
XRegisterIMInstantiateCallback(scr->display, NULL, NULL, NULL, instantiateIM_cb, (XPointer) scr);
}
}
void W_CreateIC(WMView * view)
{
WMScreen *scr = W_VIEW_SCREEN(view);
XVaNestedList preedit_attr = NULL;
if (view->xic || !view->flags.realized || !scr->imctx)
return;
if (scr->imctx->ximstyle & XIMPreeditPosition) {
XPoint spot;
XRectangle rect;
int ofs;
ofs = (view->size.height - WMFontHeight(scr->normalFont)) / 2;
rect.x = ofs;
rect.y = ofs;
rect.height = WMFontHeight(scr->normalFont);
rect.width = view->size.width - ofs * 2;
spot.x = rect.x;
spot.y = rect.y + rect.height;
// this really needs to be changed, but I don't know how yet -Dan
// it used to be like this with fontsets, but no longer applies to xft
preedit_attr = XVaCreateNestedList(0, XNSpotLocation, &spot,
XNArea, &rect, XNFontInfo, scr->normalFont->font, NULL);
}
view->xic = XCreateIC(scr->imctx->xim, XNInputStyle, scr->imctx->ximstyle,
XNClientWindow, view->window,
preedit_attr ? XNPreeditAttributes : NULL, preedit_attr, NULL);
if (preedit_attr)
XFree(preedit_attr);
if (view->xic) {
unsigned long fevent = 0;
XGetICValues(view->xic, XNFilterEvents, &fevent, NULL);
XSelectInput(scr->display, view->window,
ButtonPressMask | ButtonReleaseMask | ExposureMask |
KeyPressMask | FocusChangeMask | ButtonMotionMask | fevent);
}
}
void W_DestroyIC(WMView * view)
{
if (view->xic) {
XDestroyIC(view->xic);
view->xic = 0;
}
}
static void setPreeditArea(W_View * view)
{
WMScreen *scr = W_VIEW_SCREEN(view);
XVaNestedList preedit_attr = NULL;
if (view->xic && (scr->imctx->ximstyle & XIMPreeditPosition)) {
XRectangle rect;
int ofs;
ofs = (view->size.height - WMFontHeight(scr->normalFont)) / 2;
rect.x = ofs;
rect.y = ofs;
rect.height = WMFontHeight(scr->normalFont);
rect.width = view->size.width - ofs * 2;
preedit_attr = XVaCreateNestedList(0, XNArea, &rect, NULL);
XSetICValues(view->xic, XNPreeditAttributes, preedit_attr, NULL);
if (preedit_attr) {
XFree(preedit_attr);
}
}
}
void W_FocusIC(WMView * view)
{
WMScreen *scr = W_VIEW_SCREEN(view);
if (view->xic) {
XSetICFocus(view->xic);
XSetICValues(view->xic, XNFocusWindow, view->window, NULL);
if (scr->imctx->ximstyle & XIMPreeditPosition) {
setPreeditArea(view);
}
}
}
void W_UnFocusIC(WMView * view)
{
if (view->xic) {
XUnsetICFocus(view->xic);
}
}
void W_SetPreeditPositon(W_View * view, int x, int y)
{
WMScreen *scr = W_VIEW_SCREEN(view);
XVaNestedList preedit_attr = NULL;
if (view->xic && (scr->imctx->ximstyle & XIMPreeditPosition)) {
XPoint spot;
int ofs;
ofs = (view->size.height - WMFontHeight(scr->normalFont)) / 2;
spot.x = x;
spot.y = y + view->size.height - ofs - 3;
preedit_attr = XVaCreateNestedList(0, XNSpotLocation, &spot, NULL);
XSetICValues(view->xic, XNPreeditAttributes, preedit_attr, NULL);
if (preedit_attr) {
XFree(preedit_attr);
}
}
}
int W_LookupString(W_View *view, XKeyPressedEvent *event, char *buffer, int buflen, KeySym *keysym, Status *status)
{
WMScreen *scr = W_VIEW_SCREEN(view);
XSetInputFocus(scr->display, view->window, RevertToParent, CurrentTime);
#ifdef X_HAVE_UTF8_STRING
if (view->xic)
return Xutf8LookupString(view->xic, event, buffer, buflen, keysym, status);
#endif
return XLookupString(event, buffer, buflen, keysym, (XComposeStatus *) status);
}
/*
* Map a keycode to the corresponding keysym
* To replace the deprecated X11 function XKeycodeToKeysym
*/
KeySym W_KeycodeToKeysym(Display *display, KeyCode keycode, int index)
{
static int min_kc = -1;
static int max_kc;
int num_syms;
KeySym *key_syms;
KeySym ks;
XDisplayKeycodes(display, &min_kc, &max_kc);
if (keycode < min_kc || keycode > max_kc || index < 0) {
return NoSymbol;
}
key_syms = XGetKeyboardMapping(display, keycode, 1, &num_syms);
if (index >= num_syms) {
XFree(key_syms);
return NoSymbol;
}
ks = key_syms[index];
XFree(key_syms);
return ks;
}
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