Remove Carbon directory from source tree

1 files changed, 0 insertions, 1168 deletions

diff --git a/carbon/tkMacOSXKeyEvent.c b/carbon/tkMacOSXKeyEvent.c
deleted file mode 100644
index d801f68..0000000
--- a/carbon/tkMacOSXKeyEvent.c
+++ /dev/null
@@ -1,1168 +0,0 @@
-/*
- * tkMacOSXKeyEvent.c --
- *
- *	This file implements functions that decode & handle keyboard events on
- *	MacOS X.
- *
- * Copyright 2001, Apple Computer, Inc.
- * Copyright (c) 2006-2007 Daniel A. Steffen <das@users.sourceforge.net>
- *
- * See the file "license.terms" for information on usage and redistribution of
- * this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- *	The following terms apply to all files originating from Apple Computer,
- *	Inc. ("Apple") and associated with the software unless explicitly
- *	disclaimed in individual files.
- *
- *	Apple hereby grants permission to use, copy, modify, distribute, and
- *	license this software and its documentation for any purpose, provided
- *	that existing copyright notices are retained in all copies and that
- *	this notice is included verbatim in any distributions. No written
- *	agreement, license, or royalty fee is required for any of the
- *	authorized uses. Modifications to this software may be copyrighted by
- *	their authors and need not follow the licensing terms described here,
- *	provided that the new terms are clearly indicated on the first page of
- *	each file where they apply.
- *
- *	IN NO EVENT SHALL APPLE, THE AUTHORS OR DISTRIBUTORS OF THE SOFTWARE BE
- *	LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR
- *	CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE, ITS
- *	DOCUMENTATION, OR ANY DERIVATIVES THEREOF, EVEN IF APPLE OR THE AUTHORS
- *	HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. APPLE, THE AUTHORS
- *	AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING, BUT
- *	NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
- *	A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED
- *	ON AN "AS IS" BASIS, AND APPLE,THE AUTHORS AND DISTRIBUTORS HAVE NO
- *	OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
- *	MODIFICATIONS.
- *
- *	GOVERNMENT USE: If you are acquiring this software on behalf of the
- *	U.S. government, the Government shall have only "Restricted Rights" in
- *	the software and related documentation as defined in the Federal
- *	Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2). If you are
- *	acquiring the software on behalf of the Department of Defense, the
- *	software shall be classified as "Commercial Computer Software" and the
- *	Government shall have only "Restricted Rights" as defined in Clause
- *	252.227-7013 (c) (1) of DFARs. Notwithstanding the foregoing, the
- *	authors grant the U.S. Government and others acting in its behalf
- *	permission to use and distribute the software in accordance with the
- *	terms specified in this license.
- */
-
-#include "tkMacOSXPrivate.h"
-#include "tkMacOSXEvent.h"
-
-/*
-#ifdef TK_MAC_DEBUG
-#define TK_MAC_DEBUG_KEYBOARD
-#endif
-*/
-
-typedef struct {
-    WindowRef whichWindow;
-    int global_x, global_y;
-    int local_x, local_y;
-    unsigned int state;
-    UInt32 keyCode;
-    UInt32 keyModifiers;
-    UInt32 message;
-    unsigned char ch;
-} KeyEventData;
-
-static Tk_Window grabWinPtr = NULL;
-				/* Current grab window, NULL if no grab. */
-static Tk_Window keyboardGrabWinPtr = NULL;
-				/* Current keyboard grab window. */
-static UInt32 deadKeyStateUp = 0;
-				/* The deadkey state for the current sequence
-				 * of keyup events or 0 if not in a deadkey
-				 * sequence */
-static UInt32 deadKeyStateDown = 0;
-				/* Ditto for keydown */
-
-/*
- * Declarations for functions used only in this file.
- */
-
-static int		GenerateKeyEvent(UInt32 eKind, KeyEventData *e,
-			    UInt32 savedKeyCode, UInt32 savedModifiers,
-			    const UniChar *chars, int numChars);
-static TextEncoding	GetKCHREncoding(ScriptCode script, SInt32 layoutid);
-static int		GetKeyboardLayout(Ptr *resourcePtr,
-			    TextEncoding *encodingPtr);
-static int		InitKeyData(KeyEventData *keyEventDataPtr);
-static int		InitKeyEvent(XEvent *eventPtr, KeyEventData *e,
-			    UInt32 savedKeyCode, UInt32 savedModifiers);
-static int		KeycodeToUnicodeViaKCHRResource(UniChar *uniChars,
-			    int maxChars, Ptr kchr, TextEncoding encoding,
-			    EventKind eKind, UInt32 keycode, UInt32 modifiers,
-			    UInt32 *deadKeyStatePtr);
-static int		KeycodeToUnicodeViaUnicodeResource(UniChar *uniChars,
-			    int maxChars, Ptr uchr, EventKind eKind,
-			    UInt32 keycode, UInt32 modifiers,
-			    UInt32 *deadKeyStatePtr);
-
-/*
- *----------------------------------------------------------------------
- *
- * TkMacOSXProcessKeyboardEvent --
- *
- *	This routine processes the event in eventPtr, and generates the
- *	appropriate Tk events from it.
- *
- * Results:
- *	True if event(s) are generated - false otherwise.
- *
- * Side effects:
- *	Additional events may be place on the Tk event queue.
- *
- *----------------------------------------------------------------------
- */
-
-MODULE_SCOPE int
-TkMacOSXProcessKeyboardEvent(
-    TkMacOSXEvent *eventPtr,
-    MacEventStatus *statusPtr)
-{
-    static UInt32 savedKeyCode = 0;
-    static UInt32 savedModifiers = 0;
-    static UniChar savedChar = 0;
-    OSStatus err;
-    KeyEventData keyEventData;
-    MenuRef menuRef;
-    MenuItemIndex menuItemIndex;
-    int eventGenerated;
-    UniChar uniChars[5]; /* make this larger, if needed */
-    UInt32 uniCharsLen = 0;
-
-    if (!InitKeyData(&keyEventData)) {
-	statusPtr->err = 1;
-	return false;
-    }
-
-    /*
-     * Because of the way that Tk operates, we can't in general funnel menu
-     * accelerators through IsMenuKeyEvent. Tk treats accelerators as mere
-     * decoration, and the user has to install bindings to get them to fire.
-     *
-     * However, the only way to trigger the Hide & Hide Others functions is by
-     * invoking the Menu command for Hide. So there is no nice way to provide a
-     * Tk command to hide the app which would be available for a binding. So I
-     * am going to hijack Command-H and Command-Shift-H here, and run the menu
-     * commands. Since the HI Guidelines explicitly reserve these for Hide,
-     * this isn't such a bad thing. Also, if you do rebind Command-H to another
-     * menu item, Hide will lose its binding.
-     *
-     * Note that I don't really do anything at this point, I just mark
-     * stopProcessing as 0 and return, and then the RecieveAndProcessEvent code
-     * will dispatch the event to the default handler.
-     */
-
-    if ((eventPtr->eKind == kEventRawKeyDown
-	    || eventPtr->eKind == kEventRawKeyRepeat)
-	    && IsMenuKeyEvent(tkCurrentAppleMenu, eventPtr->eventRef,
-		    kMenuEventQueryOnly, &menuRef, &menuItemIndex)) {
-	MenuCommand menuCmd;
-
-	GetMenuItemCommandID (menuRef, menuItemIndex, &menuCmd);
-	switch (menuCmd) {
-	case kHICommandHide:
-	case kHICommandHideOthers:
-	case kHICommandShowAll:
-	case kHICommandPreferences:
-	case kHICommandQuit:
-	    statusPtr->stopProcessing = 0;
-
-	    /*
-	     * TODO: may not be on event on queue.
-	     */
-
-	    return 0;
-	default:
-	    break;
-	}
-    }
-
-    err = ChkErr(GetEventParameter, eventPtr->eventRef,
-	    kEventParamKeyMacCharCodes, typeChar, NULL,
-	    sizeof(keyEventData.ch), NULL, &keyEventData.ch);
-    if (err != noErr) {
-	statusPtr->err = 1;
-	return false;
-    }
-    err = ChkErr(GetEventParameter, eventPtr->eventRef, kEventParamKeyCode,
-	    typeUInt32, NULL, sizeof(keyEventData.keyCode), NULL,
-	    &keyEventData.keyCode);
-    if (err != noErr) {
-	statusPtr->err = 1;
-	return false;
-    }
-    err = ChkErr(GetEventParameter, eventPtr->eventRef,
-	    kEventParamKeyModifiers, typeUInt32, NULL,
-	    sizeof(keyEventData.keyModifiers), NULL,
-	    &keyEventData.keyModifiers);
-    if (err != noErr) {
-	statusPtr->err = 1;
-	return false;
-    }
-
-    switch (eventPtr->eKind) {
-    case kEventRawKeyUp:
-    case kEventRawKeyDown:
-    case kEventRawKeyRepeat: {
-	UInt32 *deadKeyStatePtr;
-
-	if (kEventRawKeyDown == eventPtr->eKind) {
-	    deadKeyStatePtr = &deadKeyStateDown;
-	} else {
-	    deadKeyStatePtr = &deadKeyStateUp;
-	}
-
-	uniCharsLen = TkMacOSXKeycodeToUnicode(uniChars,
-		sizeof(uniChars)/sizeof(*uniChars), eventPtr->eKind,
-		keyEventData.keyCode, keyEventData.keyModifiers,
-		deadKeyStatePtr);
-	break;
-    }
-    }
-
-    if (kEventRawKeyUp == eventPtr->eKind) {
-	/*
-	 * For some reason the deadkey processing for KeyUp doesn't work
-	 * sometimes, so we fudge and use the last detected KeyDown.
-	 */
-
-	if ((0 == uniCharsLen) && (0 != savedChar)) {
-	    uniChars[0] = savedChar;
-	    uniCharsLen = 1;
-	}
-
-	/*
-	 * Suppress keyup events while we have a deadkey sequence on keydown.
-	 * We still *do* want to collect deadkey state in this situation if
-	 * the system provides it, that's why we do this only after
-	 * TkMacOSXKeycodeToUnicode().
-	 */
-
-	if (0 != deadKeyStateDown) {
-	    uniCharsLen = 0;
-	}
-    }
-
-    keyEventData.message = keyEventData.ch|(keyEventData.keyCode << 8);
-
-    eventGenerated = GenerateKeyEvent(eventPtr->eKind, &keyEventData,
-	    savedKeyCode, savedModifiers, uniChars, uniCharsLen);
-
-    savedModifiers = keyEventData.keyModifiers;
-
-    if ((kEventRawKeyDown == eventPtr->eKind) && (uniCharsLen > 0)) {
-	savedChar = uniChars[0];
-    } else {
-	savedChar = 0;
-    }
-
-    statusPtr->stopProcessing = 1;
-
-    if (eventGenerated == 0) {
-	savedKeyCode = keyEventData.message;
-	return false;
-    }
-    if (eventGenerated == -1) {
-	savedKeyCode = 0;
-	statusPtr->stopProcessing = 0;
-	return false;
-    }
-    savedKeyCode = 0;
-    return true;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * GenerateKeyEvent --
- *
- *	Given Macintosh keyUp, keyDown & autoKey events (in their "raw" form)
- *	and a list of unicode characters this function generates the
- *	appropriate X key events.
- *
- *	Parameter eKind is a raw keyboard event. e contains the data sent with
- *	the event. savedKeyCode and savedModifiers contain the values from the
- *	last event that came before (see TkMacOSXProcessKeyboardEvent()).
- *	chars/numChars has the Unicode characters for which we want to create
- *	events.
- *
- * Results:
- *	1 if an event was generated, -1 for any error.
- *
- * Side effects:
- *	Additional events may be place on the Tk event queue.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-GenerateKeyEvent(
-    UInt32 eKind,
-    KeyEventData * e,
-    UInt32 savedKeyCode,
-    UInt32 savedModifiers,
-    const UniChar * chars,
-    int numChars)
-{
-    XEvent event;
-    int i;
-
-    if (-1 == InitKeyEvent(&event, e, savedKeyCode, savedModifiers)) {
-	return -1;
-    }
-
-    if (kEventRawKeyModifiersChanged == eKind) {
-	if (savedModifiers > e->keyModifiers) {
-	    event.xany.type = KeyRelease;
-	} else {
-	    event.xany.type = KeyPress;
-	}
-
-	/*
-	 * Use special '-1' to signify a special keycode to our platform
-	 * specific code in tkMacOSXKeyboard.c. This is rather like what
-	 * happens on Windows.
-	 */
-
-	event.xany.send_event = -1;
-
-	/*
-	 * Set keycode (which was zero) to the changed modifier
-	 */
-
-	event.xkey.keycode = (e->keyModifiers ^ savedModifiers);
-	Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
-    } else {
-	for (i = 0; i < numChars; ++i) {
-	    /*
-	     * Encode one char in the trans_chars array that was already
-	     * introduced for MS Windows. Don't encode the string, if it is a
-	     * control character but was not generated with a real control
-	     * modifier. Such control characters get generated by KeyTrans()
-	     * for special keys, but we rather want to identify those by their
-	     * KeySyms.
-	     */
-
-	    event.xkey.trans_chars[0] = 0;
-	    if ((controlKey & e->keyModifiers) || (chars[i] >= ' ')) {
-		int done = Tcl_UniCharToUtf(chars[i],event.xkey.trans_chars);
-
-		event.xkey.trans_chars[done] = 0;
-	    }
-
-	    switch(eKind) {
-	    case kEventRawKeyDown:
-		event.xany.type = KeyPress;
-		Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
-		break;
-	    case kEventRawKeyUp:
-		event.xany.type = KeyRelease;
-		Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
-		break;
-	    case kEventRawKeyRepeat:
-		event.xany.type = KeyRelease;
-		Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
-		event.xany.type = KeyPress;
-		Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
-		break;
-	    default:
-		TkMacOSXDbgMsg("Invalid parameter eKind %ld", eKind);
-		return -1;
-	    }
-	}
-    }
-
-    return 1;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * InitKeyData --
- *
- *	This routine initializes a KeyEventData structure by asking the OS and
- *	Tk for all the global information needed here.
- *
- * Results:
- *	True if the current front window can be found in Tk data structures,
- *	false otherwise.
- *
- * Side Effects:
- *	None
- *
- *----------------------------------------------------------------------
- */
-
-static int
-InitKeyData(
-    KeyEventData *keyEventDataPtr)
-{
-    memset(keyEventDataPtr, 0, sizeof(*keyEventDataPtr));
-
-    keyEventDataPtr->whichWindow = ActiveNonFloatingWindow();
-    if (keyEventDataPtr->whichWindow == NULL) {
-	return false;
-    }
-
-    XQueryPointer(NULL, None, NULL, NULL, &keyEventDataPtr->global_x,
-	    &keyEventDataPtr->global_y, &keyEventDataPtr->local_x,
-	    &keyEventDataPtr->local_y, &keyEventDataPtr->state);
-    return true;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * InitKeyEvent --
- *
- *	Initialize an XEvent structure by asking Tk for global information.
- *	Also uses a KeyEventData structure and other current state.
- *
- * Results:
- *	1 on success, -1 for any error.
- *
- * Side effects:
- *	Additional events may be place on the Tk event queue.
- *
- *----------------------------------------------------------------------
- */
-
-/*
- * We have a general problem here. How do we handle 'Option-char' keypresses?
- * The problem is that we might want to bind to some of these (e.g. Cmd-Opt-d
- * is 'uncomment' in Alpha). OTOH Option-d actually produces a real character
- * on MacOS, namely a mathematical delta.
- *
- * The current behaviour is that a binding goes by the combinations of
- * modifiers and base keysym, that is Option-d. The string value of the event
- * is the mathematical delta character, so if no binding calls [break], the
- * text widget will insert that character.
- *
- * Note that this is similar to control combinations on all platforms. They
- * also generate events that have the base character as keysym and a real
- * control character as character value. So Ctrl+C gets us the keysym XK_C, the
- * modifier Control (so you can bind <Control-C>) and a string value as
- * "\u0003".
- *
- * For a different solutions we may want for the event to contain keysyms for
- * *both* the 'Opt-d' side of things and the mathematical delta. Then a binding
- * on Opt-d will trigger, but a binding on mathematical delta would also
- * trigger. This would require changes in the core, though.
- */
-
-static int
-InitKeyEvent(
-    XEvent * eventPtr,
-    KeyEventData * e,
-    UInt32 savedKeyCode,
-    UInt32 savedModifiers)
-{
-    Window window;
-    Tk_Window tkwin;
-    TkDisplay *dispPtr;
-
-    /*
-     * The focus must be in the FrontWindow on the Macintosh. We then query Tk
-     * to determine the exact Tk window that owns the focus.
-     */
-
-    window = TkMacOSXGetXWindow(e->whichWindow);
-    dispPtr = TkGetDisplayList();
-    tkwin = Tk_IdToWindow(dispPtr->display, window);
-
-    if (!tkwin) {
-	TkMacOSXDbgMsg("tkwin == NULL");
-	return -1;
-    }
-
-    tkwin = (Tk_Window) ((TkWindow *) tkwin)->dispPtr->focusPtr;
-    if (!tkwin) {
-	TkMacOSXDbgMsg("tkwin == NULL");
-	return -1;
-    }
-
-    memset(eventPtr, 0, sizeof(XEvent));
-    eventPtr->xany.send_event = false;
-    eventPtr->xany.serial = Tk_Display(tkwin)->request;
-
-    eventPtr->xkey.same_screen = true;
-    eventPtr->xkey.subwindow = None;
-    eventPtr->xkey.time = TkpGetMS();
-    eventPtr->xkey.x_root = e->global_x;
-    eventPtr->xkey.y_root = e->global_y;
-    eventPtr->xkey.window = Tk_WindowId(tkwin);
-    eventPtr->xkey.display = Tk_Display(tkwin);
-    eventPtr->xkey.root = XRootWindow(Tk_Display(tkwin), 0);
-    eventPtr->xkey.state = e->state;
-    eventPtr->xkey.trans_chars[0] = 0;
-
-    Tk_TopCoordsToWindow(tkwin, e->local_x, e->local_y, &eventPtr->xkey.x,
-	    &eventPtr->xkey.y);
-
-    eventPtr->xkey.keycode = e->ch | ((savedKeyCode & charCodeMask) << 8) |
-	    ((e->message&keyCodeMask) << 8);
-    return 1;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * GetKeyboardLayout --
- *
- *	Queries the OS for a pointer to a keyboard resource.
- *
- *	This function works with the keyboard layout switch menu. It uses
- *	Keyboard Layout Services, where available.
- *
- * Results:
- *	1 if there is returned a Unicode 'uchr' resource in *resourcePtr, 0 if
- *	it is a classic 'KCHR' resource. A pointer to the actual resource data
- *	goes into *resourcePtr. If the resource is a 'KCHR' resource, the
- *	corresponding Mac encoding goes into *encodingPtr.
- *
- * Side effects:
- *	Sets some internal static variables.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-GetKeyboardLayout(
-    Ptr *resourcePtr,
-    TextEncoding *encodingPtr)
-{
-    static KeyboardLayoutRef lastLayout = NULL;
-    static SInt32 lastLayoutId;
-    static TextEncoding lastEncoding = kTextEncodingMacRoman;
-    static Ptr uchr = NULL;
-    static Ptr KCHR = NULL;
-    int hasLayoutChanged = false;
-    KeyboardLayoutRef currentLayout = NULL;
-    SInt32 currentLayoutId = 0;
-    ScriptCode currentKeyScript;
-
-    currentKeyScript = GetScriptManagerVariable(smKeyScript);
-
-    /*
-     * Use the Keyboard Layout Services.
-     */
-
-    KLGetCurrentKeyboardLayout(&currentLayout);
-
-    if (currentLayout != NULL) {
-	/*
-	 * The layout pointer could in theory be the same for different
-	 * layouts, only the id gives us the information that the
-	 * keyboard has actually changed. OTOH the layout object can
-	 * also change and it could still be the same layoutid.
-	 */
-
-	KLGetKeyboardLayoutProperty(currentLayout, kKLIdentifier,
-		(const void **) &currentLayoutId);
-
-	if ((lastLayout != currentLayout)
-		|| (lastLayoutId != currentLayoutId)) {
-#ifdef TK_MAC_DEBUG_KEYBOARD
-	    TkMacOSXDbgMsg("Use KLS");
-#endif
-	    hasLayoutChanged = true;
-
-	    /*
-	     * Reinitialize all relevant variables.
-	     */
-
-	    lastLayout = currentLayout;
-	    lastLayoutId = currentLayoutId;
-	    uchr = NULL;
-	    KCHR = NULL;
-
-	    if ((KLGetKeyboardLayoutProperty(currentLayout,
-		    kKLuchrData, (const void **) &uchr) == noErr)
-		    && (uchr != NULL)) {
-		/* done */
-	    } else if ((KLGetKeyboardLayoutProperty(currentLayout,
-		    kKLKCHRData, (const void**)&KCHR) == noErr)
-		    && (KCHR != NULL)) {
-		/* done */
-	    }
-	}
-    }
-
-    if (hasLayoutChanged) {
-#ifdef TK_MAC_DEBUG_KEYBOARD
-	if (KCHR) {
-	    TkMacOSXDbgMsg("New 'KCHR' layout %ld", currentLayoutId);
-	} else if (uchr) {
-	    TkMacOSXDbgMsg("New 'uchr' layout %ld", currentLayoutId);
-	} else {
-	    TkMacOSXDbgMsg("Use cached layout (should have been %ld)",
-		    currentLayoutId);
-	}
-#endif
-
-	deadKeyStateUp = deadKeyStateDown = 0;
-
-	/*
-	 * If we did get a new 'KCHR', compute its encoding and put it into
-	 * lastEncoding.
-	 *
-	 * If we didn't get a new 'KCHR' and if we have no 'uchr' either, get
-	 * some 'KCHR' from the OS cache and leave lastEncoding at its current
-	 * value. This should better not happen, it doesn't really work.
-	 */
-
-	if (KCHR) {
-	    lastEncoding = GetKCHREncoding(currentKeyScript, currentLayoutId);
-#ifdef TK_MAC_DEBUG_KEYBOARD
-	    TkMacOSXDbgMsg("New 'KCHR' encoding %lu (%lu + 0x%lX)",
-		    lastEncoding, lastEncoding & 0xFFFFL,
-		    lastEncoding & ~0xFFFFL);
-#endif
-	} else if (!uchr) {
-	    KCHR = (Ptr)(intptr_t) GetScriptManagerVariable(smKCHRCache);
-	}
-    }
-
-    if (uchr) {
-	*resourcePtr = uchr;
-	return 1;
-    }
-    *resourcePtr = KCHR;
-    *encodingPtr = lastEncoding;
-    return 0;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * GetKCHREncoding --
- *
- *	Upgrade a WorldScript code to a TEC encoding based on the keyboard
- *	layout id.
- *
- * Results:
- *	The TEC code that corresponds best to the combination of WorldScript
- *	code and 'KCHR' id.
- *
- * Side effects:
- *	None.
- *
- * Rationale and Notes:
- *	WorldScript codes are sometimes not unique encodings. E.g. Icelandic
- *	uses script smRoman (0), but the actual encoding is
- *	kTextEncodingMacIcelandic (37). ftp://ftp.unicode.org/Public
- *	/MAPPINGS/VENDORS/APPLE/README.TXT has a good summary of these
- *	variants. So we need to upgrade the script to an encoding with
- *	GetTextEncodingFromScriptInfo().
- *
- *	'KCHR' ids are usually region codes (see the comments in Script.h).
- *	Where they are not, we get a paramErr from the OS function and have
- *	appropriate fallbacks.
- *
- *----------------------------------------------------------------------
- */
-
-static TextEncoding
-GetKCHREncoding(
-    ScriptCode script,
-    SInt32 layoutid)
-{
-    RegionCode region = layoutid;
-    TextEncoding encoding = script;
-
-    if (GetTextEncodingFromScriptInfo(script, kTextLanguageDontCare, region,
-	    &encoding) == noErr) {
-	return encoding;
-    }
-
-    /*
-     * GetTextEncodingFromScriptInfo() doesn't know about more exotic layouts.
-     * This provides a fallback for good measure. In an ideal world, exotic
-     * layouts would always provide a 'uchr' resource anyway, so we wouldn't
-     * need this.
-     *
-     * We can add more keyboard layouts, if we get actual complaints. Farsi or
-     * other Celtic/Gaelic layouts would be candidates.
-     */
-
-    switch (layoutid) {
-	/*
-	 * Icelandic and Faroese (planned). These layouts are sold by Apple
-	 * Iceland for legacy applications.
-	 */
-
-    case 1800: case 1821:
-	return kTextEncodingMacIcelandic;
-
-	/*
-	 * Irish and Welsh. These layouts are mentioned in <Script.h>.
-	 *
-	 * FIXME: This may have to be kTextEncodingMacGaelic instead, but I
-	 * can't locate layouts of this type for testing.
-	 */
-
-    case 581: case 779:
-	return kTextEncodingMacCeltic;
-    }
-
-    /*
-     * The valid script codes are also the valid default encoding codes, so if
-     * nothing else helps, fall back on those.
-     */
-
-    return script;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * KeycodeToUnicodeViaUnicodeResource --
- *
- *	Given MacOS key event data this function generates the Unicode
- *	characters. It does this using a 'uchr' and the UCKeyTranslate API.
- *
- *	The parameter deadKeyStatePtr can be NULL, if no deadkey handling is
- *	needed.
- *
- *	Tested and known to work with US, Hebrew, Greek and Russian layouts as
- *	well as "Unicode Hex Input".
- *
- * Results:
- *	The number of characters generated if any, 0 if we are waiting for
- *	another byte of a dead-key sequence. Fills in the uniChars array with a
- *	Unicode string.
- *
- * Side Effects:
- *	None
- *
- *----------------------------------------------------------------------
- */
-
-static int
-KeycodeToUnicodeViaUnicodeResource(
-    UniChar *uniChars,
-    int maxChars,
-    Ptr uchr,
-    EventKind eKind,
-    UInt32 keycode,
-    UInt32 modifiers,
-    UInt32 *deadKeyStatePtr)
-{
-    int action;
-    unsigned long keyboardType;
-    OptionBits options = 0;
-    UInt32 dummy_state;
-    UniCharCount actuallength;
-    OSStatus err;
-
-    keycode &= 0xFF;
-    modifiers = (modifiers >> 8) & 0xFF;
-    keyboardType = LMGetKbdType();
-
-    if (NULL==deadKeyStatePtr) {
-	options = kUCKeyTranslateNoDeadKeysMask;
-	dummy_state = 0;
-	deadKeyStatePtr = &dummy_state;
-    }
-
-    switch(eKind) {
-    case kEventRawKeyDown:
-	action = kUCKeyActionDown;
-	break;
-    case kEventRawKeyUp:
-	action = kUCKeyActionUp;
-	break;
-    case kEventRawKeyRepeat:
-	action = kUCKeyActionAutoKey;
-	break;
-    default:
-	TkMacOSXDbgMsg("Invalid parameter eKind %d", eKind);
-	return 0;
-    }
-
-    err = ChkErr(UCKeyTranslate, (const UCKeyboardLayout *) uchr, keycode,
-	    action, modifiers, keyboardType, options, deadKeyStatePtr,
-	    maxChars, &actuallength, uniChars);
-
-    if ((0 == actuallength) && (0 != *deadKeyStatePtr)) {
-	/*
-	 * More data later
-	 */
-
-	return 0;
-    }
-
-    /*
-     * Some IMEs leave residue. :-(
-     */
-
-    *deadKeyStatePtr = 0;
-
-    if (err != noErr) {
-	actuallength = 0;
-    }
-
-    return actuallength;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * KeycodeToUnicodeViaKCHRResource --
- *
- *	Given MacOS key event data this function generates the Unicode
- *	characters. It does this using a 'KCHR' and the KeyTranslate API.
- *
- *	The parameter deadKeyStatePtr can be NULL, if no deadkey handling is
- *	needed.
- *
- * Results:
- *	The number of characters generated if any, 0 if we are waiting for
- *	another byte of a dead-key sequence. Fills in the uniChars array with a
- *	Unicode string.
- *
- * Side Effects:
- *	None
- *
- *----------------------------------------------------------------------
- */
-
-static int
-KeycodeToUnicodeViaKCHRResource(
-    UniChar *uniChars,
-    int maxChars,
-    Ptr kchr,
-    TextEncoding encoding,
-    EventKind eKind,
-    UInt32 keycode,
-    UInt32 modifiers,
-    UInt32 *deadKeyStatePtr)
-{
-    UInt32 result;
-    char macBuff[3];
-    char *macStr;
-    int macStrLen, uniStrLen;
-    UInt32 dummy_state = 0;
-    CFStringRef cfString;
-
-    if (NULL == deadKeyStatePtr) {
-	deadKeyStatePtr = &dummy_state;
-    }
-
-    keycode |= modifiers;
-    result = KeyTranslate(kchr, keycode, deadKeyStatePtr);
-
-    if ((0 == result) && (0 != dummy_state)) {
-	/*
-	 * 'dummy_state' gets only filled if the caller did not want deadkey
-	 * processing (deadKeyStatePtr was NULL originally), but we still have
-	 * a deadkey. We just push the keycode for the space bar to get the
-	 * real key value.
-	 */
-
-	result = KeyTranslate(kchr, 0x31, deadKeyStatePtr);
-	*deadKeyStatePtr = 0;
-    }
-
-    if ((0 == result) && (0 != *deadKeyStatePtr)) {
-	/*
-	 * More data later
-	 */
-
-	return 0;
-    }
-
-    macBuff[0] = (char) (result >> 16);
-    macBuff[1] = (char) result;
-    macBuff[2] = 0;
-
-    if (0 != macBuff[0]) {
-	/*
-	 * If the first byte is valid, the second is too.
-	 */
-
-	macStr = macBuff;
-	macStrLen = 2;
-    } else if (0 != macBuff[1]) {
-	/*
-	 * Only the second is valid.
-	 */
-
-	macStr = macBuff+1;
-	macStrLen = 1;
-    } else {
-	/*
-	 * No valid bytes at all -- shouldn't happen.
-	 */
-
-	macStr = NULL;
-	macStrLen = 0;
-    }
-
-    if (macStrLen <= 0) {
-	return 0;
-    }
-
-    /*
-     * Use the CFString conversion routines. This is the easiest and most
-     * compatible way to get from an 8-bit string and a MacOS script code to a
-     * Unicode string.
-     *
-     * FIXME: The system ships with an Irish 'KCHR' but without the
-     * corresponding macCeltic encoding, which triggers the error below. Tcl
-     * doesn't have the macCeltic encoding either right now, so until we get
-     * that, we can just as well stick to this code. The right fix would be to
-     * use the Tcl encodings and add macCeltic and probably others
-     * there. Suitable Unicode data files for the missing encodings are
-     * available from www.evertype.com.
-     */
-
-    cfString = CFStringCreateWithCStringNoCopy(NULL, macStr, encoding,
-	    kCFAllocatorNull);
-    if (cfString == NULL) {
-	TkMacOSXDbgMsg("CFString: Can't convert with encoding %ld", encoding);
-	return 0;
-    }
-
-    uniStrLen = CFStringGetLength(cfString);
-    if (uniStrLen > maxChars) {
-	uniStrLen = maxChars;
-    }
-    CFStringGetCharacters(cfString, CFRangeMake(0,uniStrLen), uniChars);
-    CFRelease(cfString);
-
-    return uniStrLen;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TkMacOSXKeycodeToUnicode --
- *
- *	Given MacOS key event data this function generates the Unicode
- *	characters. It does this using OS resources and APIs.
- *
- *	The parameter deadKeyStatePtr can be NULL, if no deadkey handling is
- *	needed.
- *
- *	This function is called from XKeycodeToKeysym() in tkMacOSKeyboard.c.
- *
- * Results:
- *	The number of characters generated if any, 0 if we are waiting for
- *	another byte of a dead-key sequence. Fills in the uniChars array with a
- *	Unicode string.
- *
- * Side Effects:
- *	None
- *
- *----------------------------------------------------------------------
- */
-
-MODULE_SCOPE int
-TkMacOSXKeycodeToUnicode(
-    UniChar *uniChars,
-    int maxChars,
-    EventKind eKind,
-    UInt32 keycode,
-    UInt32 modifiers,
-    UInt32 *deadKeyStatePtr)
-{
-    Ptr resource = NULL;
-    TextEncoding encoding;
-
-    if (GetKeyboardLayout(&resource, &encoding)) {
-	return KeycodeToUnicodeViaUnicodeResource(uniChars, maxChars,
-		resource, eKind, keycode, modifiers, deadKeyStatePtr);
-    } else {
-	return KeycodeToUnicodeViaKCHRResource(uniChars, maxChars, resource,
-		encoding, eKind, keycode, modifiers, deadKeyStatePtr);
-    }
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * XGrabKeyboard --
- *
- *	Simulates a keyboard grab by setting the focus.
- *
- * Results:
- *	Always returns GrabSuccess.
- *
- * Side effects:
- *	Sets the keyboard focus to the specified window.
- *
- *----------------------------------------------------------------------
- */
-
-int
-XGrabKeyboard(
-    Display* display,
-    Window grab_window,
-    Bool owner_events,
-    int pointer_mode,
-    int keyboard_mode,
-    Time time)
-{
-    keyboardGrabWinPtr = Tk_IdToWindow(display, grab_window);
-
-    return GrabSuccess;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * XUngrabKeyboard --
- *
- *	Releases the simulated keyboard grab.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Sets the keyboard focus back to the value before the grab.
- *
- *----------------------------------------------------------------------
- */
-
-void
-XUngrabKeyboard(
-    Display* display,
-    Time time)
-{
-    keyboardGrabWinPtr = NULL;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TkMacOSXGetCapture --
- *
- * Results:
- *	Returns the current grab window
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-Tk_Window
-TkMacOSXGetCapture(void)
-{
-    return grabWinPtr;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TkpSetCapture --
- *
- *	This function captures the mouse so that all future events will be
- *	reported to this window, even if the mouse is outside the window. If
- *	the specified window is NULL, then the mouse is released.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Sets the capture flag and captures the mouse.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TkpSetCapture(
-    TkWindow *winPtr)		/* Capture window, or NULL. */
-{
-    while (winPtr && !Tk_IsTopLevel(winPtr)) {
-	winPtr = winPtr->parentPtr;
-    }
-#if 0
-    {
-	TkWindow *w = NULL;
-	WindowModality m;
-
-	if (winPtr) {
-	    w = winPtr;
-	    m = kWindowModalityAppModal;
-	} else if (grabWinPtr) {
-	    w = (TkWindow *) grabWinPtr;
-	    m = kWindowModalityNone;
-	}
-
-	if (w && w->window != None && TkMacOSXHostToplevelExists(w)) {
-	    ChkErr(SetWindowModality, TkMacOSXDrawableWindow(w->window), m,
-		    NULL);
-	}
-    }
-#endif
-    grabWinPtr = (Tk_Window) winPtr;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tk_SetCaretPos --
- *
- *	This enables correct placement of the XIM caret. This is called by
- *	widgets to indicate their cursor placement, and the caret location is
- *	used by TkpGetString to place the XIM caret.
- *
- * Results:
- *	None
- *
- * Side effects:
- *	None
- *
- *----------------------------------------------------------------------
- */
-
-void
-Tk_SetCaretPos(
-    Tk_Window tkwin,
-    int x,
-    int y,
-    int height)
-{
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TkMacOSXInitKeyboard --
- *
- *	This procedure initializes the keyboard layout.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-MODULE_SCOPE void
-TkMacOSXInitKeyboard(
-    Tcl_Interp *interp)
-{
-    Ptr resource;
-    TextEncoding encoding;
-
-    GetKeyboardLayout(&resource, &encoding);
-}
-
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 4
- * fill-column: 79
- * coding: utf-8
- * End:
- */