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X11: Remove non-UTF-8 fallback paths

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It seems it has not been possible to compile GLFW on systems without the
UTF-8 extensions to Xlib since a0a5cc57df
was merged five months ago.  The UTF-8 extension functions were
introduced with XFree86 4.0.2 in December 2000 and are likely widely
available at this point.

This removes the locale-dependent fallback paths and uses the UTF-8
extension functions where available.
This commit is contained in:
Camilla Löwy 2020-07-02 18:53:26 +02:00
parent 9a3664b4a9
commit 4ae93e0547
3 changed files with 13 additions and 46 deletions
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5
src/x11_init.c
View File

@ -1297,6 +1297,9 @@ int _glfwPlatformInit(void)
_glfw.x11.xlib.utf8SetWMProperties = (PFN_Xutf8SetWMProperties)
_glfw_dlsym(_glfw.x11.xlib.handle, "Xutf8SetWMProperties");
if (_glfw.x11.xlib.utf8LookupString && _glfw.x11.xlib.utf8SetWMProperties)
_glfw.x11.xlib.utf8 = GLFW_TRUE;
XInitThreads();
XrmInitialize();
@ -1330,7 +1333,7 @@ int _glfwPlatformInit(void)
_glfw.x11.helperWindowHandle = createHelperWindow();
_glfw.x11.hiddenCursorHandle = createHiddenCursor();
if (XSupportsLocale())
if (XSupportsLocale() && _glfw.x11.xlib.utf8)
{
XSetLocaleModifiers("");

1
src/x11_platform.h
View File

@ -501,6 +501,7 @@ typedef struct _GLFWlibraryX11
struct {
void* handle;
GLFWbool utf8;
PFN_XAllocClassHint AllocClassHint;
PFN_XAllocSizeHints AllocSizeHints;
PFN_XAllocWMHints AllocWMHints;

53
src/x11_window.c
View File

@ -463,7 +463,6 @@ static size_t encodeUTF8(char* s, unsigned int ch)
// Decode a Unicode code point from a UTF-8 stream
// Based on cutef8 by Jeff Bezanson (Public Domain)
//
#if defined(X_HAVE_UTF8_STRING)
static unsigned int decodeUTF8(const char** s)
{
unsigned int ch = 0, count = 0;
@ -483,7 +482,6 @@ static unsigned int decodeUTF8(const char** s)
assert(count <= 6);
return ch - offsets[count - 1];
}
#endif /*X_HAVE_UTF8_STRING*/
// Convert the specified Latin-1 string to UTF-8
//
@ -1285,7 +1283,6 @@ static void processEvent(XEvent *event)
{
int count;
Status status;
#if defined(X_HAVE_UTF8_STRING)
char buffer[100];
char* chars = buffer;
@ -1310,33 +1307,6 @@ static void processEvent(XEvent *event)
while (c - chars < count)
_glfwInputChar(window, decodeUTF8(&c), mods, plain);
}
#else /*X_HAVE_UTF8_STRING*/
wchar_t buffer[16];
wchar_t* chars = buffer;
count = XwcLookupString(window->x11.ic,
&event->xkey,
buffer,
sizeof(buffer) / sizeof(wchar_t),
NULL,
&status);
if (status == XBufferOverflow)
{
chars = calloc(count, sizeof(wchar_t));
count = XwcLookupString(window->x11.ic,
&event->xkey,
chars, count,
NULL, &status);
}
if (status == XLookupChars || status == XLookupBoth)
{
int i;
for (i = 0; i < count; i++)
_glfwInputChar(window, chars[i], mods, plain);
}
#endif /*X_HAVE_UTF8_STRING*/
if (chars != buffer)
free(chars);
@ -2106,21 +2076,14 @@ void _glfwPlatformDestroyWindow(_GLFWwindow* window)
void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
{
#if defined(X_HAVE_UTF8_STRING)
Xutf8SetWMProperties(_glfw.x11.display,
window->x11.handle,
title, title,
NULL, 0,
NULL, NULL, NULL);
#else
// This may be a slightly better fallback than using XStoreName and
// XSetIconName, which always store their arguments using STRING
XmbSetWMProperties(_glfw.x11.display,
window->x11.handle,
title, title,
NULL, 0,
NULL, NULL, NULL);
#endif
if (_glfw.x11.xlib.utf8)
{
Xutf8SetWMProperties(_glfw.x11.display,
window->x11.handle,
title, title,
NULL, 0,
NULL, NULL, NULL);
}
XChangeProperty(_glfw.x11.display, window->x11.handle,
_glfw.x11.NET_WM_NAME, _glfw.x11.UTF8_STRING, 8,