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#include <stdio.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <X11/Xlocale.h>
#define DEFAULT_FONT \
"8x16,\
-tlc-song-medium-r-normal--16-*-*-*-*-*-gbk-0"
#define F_SIZE 16
#define COL 30
#define ROW 10
#define W_WIDTH (F_SIZE * COL)
#define W_HEIGHT (F_SIZE * (ROW + 1) + 2)
main(int argc, char *argv[])
{
Display *display;
int screen;
GC gc;
Window window;
XWMHints hints;
Atom protocols;
XFontSet fs;
char **missing_list;
int missing_count;
char *def_string;
XFontSetExtents *fs_ext;
int dec;
XIM im;
XIC ic;
XRectangle spot, s_rect;
XVaNestedList preedit_attr, status_attr;
XEvent event;
unsigned long mask, fevent;
int len = 127;
char string[128], s_tab[ROW][128];
KeySym keysym;
int row = 0, col = 0;
int i, count = 0;
Status status;
display = XOpenDisplay("");
screen = DefaultScreen(display);
gc = DefaultGC(display, screen);
if (setlocale(LC_CTYPE, "") == NULL) {
fprintf(stderr, "Error : setlocale() !\n");
exit(0);
}
if (! XSupportsLocale() ) {
fprintf(stderr, "Error : XSupportsLocale() !\n");
exit(0);
}
if( (fs = XCreateFontSet(display, DEFAULT_FONT, &missing_list,
&missing_count, &def_string)) == NULL) {
fprintf(stderr, "Error : XCreateFontSet() !\n");
exit(0);
}
fs_ext = XExtentsOfFontSet(fs);
dec = fs_ext->max_logical_extent.height + fs_ext->max_logical_extent.y;
window = XCreateSimpleWindow(display, RootWindow(display, screen),
0, 0, W_WIDTH, W_HEIGHT + dec, 2,
BlackPixel(display, screen),
WhitePixel(display, screen));
XStoreName(display, window, "XIM Demo - Over The Spot");
hints.flags = InputHint;
hints.input = True;
XSetWMHints(display, window, &hints);
protocols = XInternAtom(display, "WM_DELETE_WINDOW", True);
XSetWMProtocols(display, window, &protocols, 1);
#ifdef DEBUG
XMapWindow(display, window);
XFlush(display);
#endif
if ((im = XOpenIM(display, NULL, NULL, NULL)) == NULL) {
printf("Error : XOpenIM !\n");
exit(0);
}
spot.x = F_SIZE / 2 * col;;
spot.y = F_SIZE * (row + 1) - dec;
preedit_attr = XVaCreateNestedList(0,
XNSpotLocation, & spot,
XNFontSet, fs,
NULL);
s_rect.x = 0;
s_rect.y = F_SIZE * ROW + dec + 2;
s_rect.width = W_WIDTH;
s_rect.height = F_SIZE;
status_attr = XVaCreateNestedList(0,
XNArea, & s_rect,
XNFontSet, fs,
NULL);
ic = XCreateIC(im,
//XNInputStyle, XIMPreeditPosition | XIMStatusArea,
XNInputStyle, XIMPreeditPosition | XIMStatusNothing,
XNClientWindow, window,
XNPreeditAttributes, preedit_attr,
XNStatusAttributes, status_attr,
NULL);
if (ic == NULL) {
printf("Error : XCreateIC() ! \n");
XCloseIM(im);
exit(0);
}
XFree(preedit_attr);
XFree(status_attr);
XGetICValues(ic, XNFilterEvents, &fevent, NULL);
mask = ExposureMask | KeyPressMask | FocusChangeMask;
XSelectInput(display, window, mask | fevent);
for(i = 0; i < ROW; i++)
s_tab[i][0] = 0;
XMapRaised(display, window);
for(;;) {
XNextEvent(display, &event);
if (XFilterEvent(&event, None) == True)
continue;
switch(event.type)
{
case FocusIn:
XSetICFocus(ic);
break;
case FocusOut:
XUnsetICFocus(ic);
break;
case Expose:
for( i=0; i < ROW; i++ )
XmbDrawString(display, window, fs, gc, 0,
F_SIZE * (i + 1), s_tab[i], strlen(s_tab[i]));
break;
case KeyPress:
count = XmbLookupString(ic, (XKeyPressedEvent *) &event,
string, len, &keysym, &status);
string[count] = 0;
if( status == XLookupBoth && keysym == XK_Return )
{
row = (++row) % ROW;
col = 0;
s_tab[row][0] = 0;
XClearArea(display, window, 0, F_SIZE * row + dec,
W_WIDTH, F_SIZE, False);
}
else if (status = XLookupChars || status == XLookupBoth)
{
XmbDrawString(display, window, fs, gc,
F_SIZE / 2 * col, F_SIZE * (row + 1),
string, count);
/* copy returned string to s_tab buffer */
for (i = 0; i < count && col < len && string[i]; i++, col++)
s_tab[row][col] = string[i];
s_tab[row][col] = 0;
}
spot.x = F_SIZE / 2 * col;
spot.y = F_SIZE * (row + 1);
preedit_attr = XVaCreateNestedList(0,
XNSpotLocation, &spot,
NULL);
XSetICValues(ic, XNPreeditAttributes, preedit_attr, NULL);
XFree(preedit_attr);
break;
case ClientMessage:
if (event.xclient.data.l[0] == protocols)
{
XDestroyIC(ic);
XCloseIM(im);
XDestroyWindow(display, window);
XCloseDisplay(display);
exit(0);
}
break;
defaults:
break;
}
}
}
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