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Allow Scintilla Ctrl-key shortcuts to work with non-Latin keyboard layouts on GTK

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See #18370
This commit is contained in:
Paul Cornett
2019-05-22 09:45:46 -07:00
parent 616b915119
commit bc1295fbdc
1 changed files with 49 additions and 7 deletions
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56
src/stc/ScintillaWX.cpp
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@@ -53,6 +53,9 @@
// GetHwndOf()
#include "wx/msw/private.h"
#endif
#ifdef __WXGTK20__
#include <gdk/gdk.h>
#endif
//----------------------------------------------------------------------
// Helper classes
@@ -1094,13 +1097,6 @@ void ScintillaWX::DoAddChar(int key) {
int ScintillaWX::DoKeyDown(const wxKeyEvent& evt, bool* consumed)
{
int key = evt.GetKeyCode();
if (key == WXK_NONE) {
// This is a Unicode character not representable in Latin-1 or some key
// without key code at all (e.g. dead key or VK_PROCESSKEY under MSW).
if ( consumed )
*consumed = false;
return 0;
}
if (evt.RawControlDown() && key >= 1 && key <= 26 && key != WXK_BACK)
key += 'A' - 1;
@@ -1141,6 +1137,52 @@ int ScintillaWX::DoKeyDown(const wxKeyEvent& evt, bool* consumed)
case WXK_ALT: key = 0; break;
case WXK_SHIFT: key = 0; break;
case WXK_MENU: key = SCK_MENU; break;
case WXK_NONE:
#ifdef __WXGTK20__
if (evt.RawControlDown())
{
// To allow Ctrl-key shortcuts to work with non-Latin keyboard layouts,
// look for any available layout that would produce an ASCII letter for
// the given hardware keycode
const unsigned keycode = evt.GetRawKeyFlags();
GdkKeymap* keymap = gdk_keymap_get_for_display(gdk_display_get_default());
GdkKeymapKey keymapKey = { keycode, 0, 1 };
do {
const unsigned keyval = gdk_keymap_lookup_key(keymap, &keymapKey);
if (keyval >= 'A' && keyval <= 'Z')
{
key = keyval;
break;
}
keymapKey.group++;
} while (keymapKey.group < 4);
if (key == WXK_NONE)
{
// There may be no keyboard layouts with Latin keys available,
// fall back to a hard-coded mapping for the common pc105
static const char keycodeToKeyval[] = {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I',
'O', 'P', 0, 0, 0, 0, 'A', 'S',
'D', 'F', 'G', 'H', 'J', 'K', 'L', 0,
0, 0, 0, 0, 'Z', 'X', 'C', 'V',
'B', 'N', 'M'
};
if (keycode < sizeof(keycodeToKeyval))
key = keycodeToKeyval[keycode];
}
}
if (key == WXK_NONE)
#endif
{
// This is a Unicode character not representable in Latin-1 or some key
// without key code at all (e.g. dead key or VK_PROCESSKEY under MSW).
if (consumed)
*consumed = false;
return 0;
}
}
int rv = KeyDownWithModifiers