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Add support for IMEs on Linux

This commit is contained in:
yw05 2021-03-30 13:52:45 +02:00 committed by sfan5
parent 32004b9c5f
commit 3ef5902815
1 changed files with 42 additions and 7 deletions
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49
source/Irrlicht/CIrrDeviceLinux.cpp
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@ -13,6 +13,7 @@
#include <locale.h>
#include "IEventReceiver.h"
#include "ISceneManager.h"
#include "IGUIElement.h"
#include "IGUIEnvironment.h"
#include "os.h"
#include "CTimer.h"
@ -705,6 +706,14 @@ bool CIrrDeviceLinux::createInputContext()
return false;
}
// Load XMODIFIERS (e.g. for IMEs)
if (!XSetLocaleModifiers(""))
{
setlocale(LC_CTYPE, oldLocale.c_str());
os::Printer::log("XSetLocaleModifiers failed. Falling back to non-i18n input.", ELL_WARNING);
return false;
}
XInputMethod = XOpenIM(XDisplay, NULL, NULL, NULL);
if ( !XInputMethod )
{
@ -820,7 +829,7 @@ bool CIrrDeviceLinux::run()
{
XEvent event;
XNextEvent(XDisplay, &event);
if (XFilterEvent(&event, XWindow))
if (acceptsIME() && XFilterEvent(&event, None))
continue;
switch (event.type)
@ -998,18 +1007,29 @@ bool CIrrDeviceLinux::run()
SKeyMap mp;
if ( XInputContext )
{
wchar_t buf[8]={0};
wchar_t buf[64]={0};
Status status;
int strLen = XwcLookupString(XInputContext, &event.xkey, buf, sizeof(buf), &mp.X11Key, &status);
int strLen = XwcLookupString(XInputContext, &event.xkey, buf, sizeof(buf)/sizeof(wchar_t)-1, &mp.X11Key, &status);
if ( status == XBufferOverflow )
{
os::Printer::log("XwcLookupString needs a larger buffer", ELL_INFORMATION);
}
if ( strLen > 0 && (status == XLookupChars || status == XLookupBoth) )
{
if ( strLen > 1 )
os::Printer::log("Additional returned characters dropped", ELL_INFORMATION);
irrevent.KeyInput.Char = buf[0];
if (strLen > 1)
{
// Multiple characters: send string event
irrevent.EventType = irr::EET_STRING_INPUT_EVENT;
irrevent.StringInput.Str = new core::stringw(buf);
postEventFromUser(irrevent);
delete irrevent.StringInput.Str;
irrevent.StringInput.Str = NULL;
break;
}
else
{
irrevent.KeyInput.Char = buf[0];
}
}
else
{
@ -1044,7 +1064,6 @@ bool CIrrDeviceLinux::run()
irrevent.KeyInput.Control = (event.xkey.state & ControlMask) != 0;
irrevent.KeyInput.Shift = (event.xkey.state & ShiftMask) != 0;
irrevent.KeyInput.Key = getKeyCode(event);
postEventFromUser(irrevent);
}
break;
@ -1138,6 +1157,22 @@ bool CIrrDeviceLinux::run()
} // end switch
} // end while
// Update IME information
if (GUIEnvironment)
{
gui::IGUIElement *elem = GUIEnvironment->getFocus();
if (elem && elem->acceptsIME())
{
core::rect<s32> r = elem->getAbsolutePosition();
XPoint p;
p.x = (short)r.UpperLeftCorner.X;
p.y = (short)r.LowerRightCorner.Y;
XVaNestedList l = XVaCreateNestedList(0, XNSpotLocation, &p, NULL);
XSetICValues(XInputContext, XNPreeditAttributes, l, NULL);
XFree(l);
}
}
}
#endif //_IRR_COMPILE_WITH_X11_