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Fix "FLTK on NetBSD very slow on X11 with Unicode locale" (#935)

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This commit is contained in:
ManoloFLTK 2024-03-18 16:56:44 +01:00
parent 4f787cc1f0
commit 807d205a3c
1 changed files with 47 additions and 14 deletions
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39
src/Fl_x.cxx
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@ -1487,15 +1487,46 @@ static KeySym fl_KeycodeToKeysym(Display *d, KeyCode k, unsigned i) {
#pragma clang diagnostic pop
#endif
static Window *xid_vector = NULL; // list of FLTK-created xid's (see issue #935)
static int xid_vector_size = 0;
static int xid_vector_count = 0;
static void add_xid_vector(Window xid) {
if (xid_vector_count >= xid_vector_size) {
xid_vector_size += 10;
xid_vector = (Window*)realloc(xid_vector, xid_vector_size * sizeof(Window));
}
xid_vector[xid_vector_count++] = xid;
}
static bool remove_xid_vector(Window xid) {
for (int pos = xid_vector_count - 1; pos >= 0; pos--) {
if (xid_vector[pos] == xid) {
if (pos != --xid_vector_count) xid_vector[pos] = xid_vector[xid_vector_count];
return true;
}
}
return false;
}
int fl_handle(const XEvent& thisevent)
{
XEvent xevent = thisevent;
fl_xevent = &thisevent;
Window xid = xevent.xany.window;
if (fl_xim_ic && xevent.type == DestroyNotify &&
xid != fl_xim_win && !fl_find(xid))
{
if (xevent.type == DestroyNotify) {
// For each DestroyNotify event, determine whether an FLTK-created window
// is being destroyed (see issue #935).
bool xid_is_from_fltk_win = remove_xid_vector(xid);
// The following if statement is limited to cases when event DestroyNotify
// concerns a non-FLTK window. Thus, the possibly slow call to XOpenIM()
// is not performed when an FLTK-created window is closed. This fixes issue #935.
if (fl_xim_ic && xid != fl_xim_win && !fl_find(xid) && !xid_is_from_fltk_win) {
// When using menus or tooltips: xid is a just hidden top-level FLTK win, xim_win is non-FLTK;
// after XIM crash: xid is non-FLTK.
// Trigger XIM crash under Debian: kill process containing "ibus-daemon"
// Restart XIM after triggered crash: "ibus-daemon --panel disable --xim &"
XIM xim_im;
xim_im = XOpenIM(fl_display, NULL, NULL, NULL);
if (!xim_im) {
@ -1508,6 +1539,7 @@ int fl_handle(const XEvent& thisevent)
}
return 0;
}
}
if (fl_xim_ic && (xevent.type == FocusIn))
fl_xim_activate(xid);
@ -2490,6 +2522,7 @@ void Fl_Window::fullscreen_off_x(int X, int Y, int W, int H) {
void fl_fix_focus(); // in Fl.cxx
Fl_X* Fl_X::set_xid(Fl_Window* win, Window winxid) {
if (!win->parent()) add_xid_vector(winxid); // store xid's of top-level FLTK windows
Fl_X* xp = new Fl_X;
xp->xid = winxid;
xp->other_xid = 0;