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Win32: Fix non-BMP Unicode codepoint input

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Supplementary Plane codepoints from WM_CHAR and WM_SYSCHAR messages were
reported as UTF-16 surrogate pairs.

Related to #1635.
This commit is contained in:
Camilla Löwy
2020-06-29 20:43:28 +02:00
parent e47832ffcf
commit 6ce2070392
3 changed files with 34 additions and 8 deletions
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src/win32_window.c
+31 -8
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@@ -646,11 +646,38 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
case WM_CHAR:
case WM_SYSCHAR:
{
if (wParam >= 0xd800 && wParam <= 0xdbff)
window->win32.highSurrogate = (WCHAR) wParam;
else
{
unsigned int codepoint = 0;
if (wParam >= 0xdc00 && wParam <= 0xdfff)
{
if (window->win32.highSurrogate)
{
codepoint += (window->win32.highSurrogate - 0xd800) << 10;
codepoint += (WCHAR) wParam - 0xdc00;
codepoint += 0x10000;
}
}
else
codepoint = (WCHAR) wParam;
window->win32.highSurrogate = 0;
_glfwInputChar(window, codepoint, getKeyMods(), uMsg != WM_SYSCHAR);
}
if (uMsg == WM_SYSCHAR && window->win32.keymenu)
break;
return 0;
}
case WM_UNICHAR:
{
const GLFWbool plain = (uMsg != WM_SYSCHAR);
if (uMsg == WM_UNICHAR && wParam == UNICODE_NOCHAR)
if (wParam == UNICODE_NOCHAR)
{
// WM_UNICHAR is not sent by Windows, but is sent by some
// third-party input method engine
@@ -658,11 +685,7 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
return TRUE;
}
_glfwInputChar(window, (unsigned int) wParam, getKeyMods(), plain);
if (uMsg == WM_SYSCHAR && window->win32.keymenu)
break;
_glfwInputChar(window, (unsigned int) wParam, getKeyMods(), GLFW_TRUE);
return 0;
}