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X11: Improve non-XKB fallback for key mapping

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A regression introduced by b889aa7841
broke the special handling of numpad keys for the non-XKB fallback path.
The non-functional remains were later removed.  This restores the
original behavior.

(cherry picked from commit cab41529da)
This commit is contained in:
Camilla Löwy 2020-04-23 21:27:28 +02:00
parent b0c79896a3
commit 404c28df3d
1 changed files with 36 additions and 12 deletions
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48
src/x11_init.c
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@ -38,22 +38,35 @@
#include <locale.h>
// Translate an X11 key code to a GLFW key code.
// Translate the X11 KeySyms for a key to a GLFW key code
// NOTE: This is only used as a fallback, in case the XKB method fails
// It is layout-dependent and will fail partially on most non-US layouts
//
static int translateKeyCode(int scancode)
static int translateKeySyms(const KeySym* keysyms, int width)
{
int keySym;
if (width > 1)
{
int dummy;
KeySym* keySyms;
keySyms = XGetKeyboardMapping(_glfw.x11.display, scancode, 1, &dummy);
keySym = keySyms[0];
XFree(keySyms);
switch (keysyms[1])
{
case XK_KP_0: return GLFW_KEY_KP_0;
case XK_KP_1: return GLFW_KEY_KP_1;
case XK_KP_2: return GLFW_KEY_KP_2;
case XK_KP_3: return GLFW_KEY_KP_3;
case XK_KP_4: return GLFW_KEY_KP_4;
case XK_KP_5: return GLFW_KEY_KP_5;
case XK_KP_6: return GLFW_KEY_KP_6;
case XK_KP_7: return GLFW_KEY_KP_7;
case XK_KP_8: return GLFW_KEY_KP_8;
case XK_KP_9: return GLFW_KEY_KP_9;
case XK_KP_Separator:
case XK_KP_Decimal: return GLFW_KEY_KP_DECIMAL;
case XK_KP_Equal: return GLFW_KEY_KP_EQUAL;
case XK_KP_Enter: return GLFW_KEY_KP_ENTER;
default: break;
}
}
switch (keySym)
switch (keysyms[0])
{
case XK_Escape: return GLFW_KEY_ESCAPE;
case XK_Tab: return GLFW_KEY_TAB;
@ -396,17 +409,28 @@ static void createKeyTables(void)
else
XDisplayKeycodes(_glfw.x11.display, &scancodeMin, &scancodeMax);
int width;
KeySym* keysyms = XGetKeyboardMapping(_glfw.x11.display,
scancodeMin,
scancodeMax - scancodeMin + 1,
&width);
for (scancode = scancodeMin; scancode <= scancodeMax; scancode++)
{
// Translate the un-translated key codes using traditional X11 KeySym
// lookups
if (_glfw.x11.keycodes[scancode] < 0)
_glfw.x11.keycodes[scancode] = translateKeyCode(scancode);
{
const size_t base = (scancode - scancodeMin) * width;
_glfw.x11.keycodes[scancode] = translateKeySyms(&keysyms[base], width);
}
// Store the reverse translation for faster key name lookup
if (_glfw.x11.keycodes[scancode] > 0)
_glfw.x11.scancodes[_glfw.x11.keycodes[scancode]] = scancode;
}
XFree(keysyms);
}
// Check whether the IM has a usable style