* win/tkWinKey.c: Added smarts to check whether the left or right

Control, Shift, or Alt key was pressed.  [Bug: 870].

* win/tkWin3d.c:
* unix/tkUnix3d.c: Tweaked threshhold for using different highlight
computation.

4 files changed, 753 insertions, 719 deletions

diff --git a/ChangeLog b/ChangeLog
index 68fc1db..96df017 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2000-04-13  Eric Melski  <ericm@scriptics.com>
 
+	* win/tkWinKey.c: Added smarts to check whether the left or right
+	Control, Shift, or Alt key was pressed.  [Bug: 870].
+
 	* win/tkWinMenu.c: Corrected code that created separator items on
 	menus; originally, it requested that the system be responsible for
 	drawing those items, so it would ignore configuration items like
diff --git a/unix/tkUnix3d.c b/unix/tkUnix3d.c
index 9a72da9..28331c5 100644
--- a/unix/tkUnix3d.c
+++ b/unix/tkUnix3d.c
@@ -9,7 +9,7 @@
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tkUnix3d.c,v 1.4 2000/04/13 18:25:44 ericm Exp $
+ * RCS: @(#) $Id: tkUnix3d.c,v 1.5 2000/04/14 01:36:35 ericm Exp $
  */
 
 #include <tk3d.h>
@@ -407,7 +407,7 @@ TkpGetShadows(borderPtr, tkwin)
 	 * Compute the light shadow color
 	 */
 
-	if (g > MAX_INTENSITY*85/100) {
+	if (g > MAX_INTENSITY*0.95) {
 	    lightColor.red = (90 * r)/100;
 	    lightColor.green = (90 * g)/100;
 	    lightColor.blue = (90 * b)/100;
diff --git a/win/tkWin3d.c b/win/tkWin3d.c
index 089ab6c..8161eba 100644
--- a/win/tkWin3d.c
+++ b/win/tkWin3d.c
@@ -9,7 +9,7 @@
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tkWin3d.c,v 1.4 2000/04/13 18:25:44 ericm Exp $
+ * RCS: @(#) $Id: tkWin3d.c,v 1.5 2000/04/14 01:36:35 ericm Exp $
  */
 
 #include "tkWinInt.h"
@@ -439,7 +439,7 @@ TkpGetShadows(borderPtr, tkwin)
 	 * Compute the light shadow color
 	 */
 
-	if (g > MAX_INTENSITY*85/100) {
+	if (g > MAX_INTENSITY*0.95) {
 	    lightColor.red = (90 * r)/100;
 	    lightColor.green = (90 * g)/100;
 	    lightColor.blue = (90 * b)/100;
diff --git a/win/tkWinKey.c b/win/tkWinKey.c
index 9e3687e..6a7a6a9 100644
--- a/win/tkWinKey.c
+++ b/win/tkWinKey.c
@@ -1,715 +1,746 @@
-/* 
- * tkWinKey.c --
- *
- *	This file contains X emulation routines for keyboard related
- *	functions.
- *
- * Copyright (c) 1995 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * RCS: @(#) $Id: tkWinKey.c,v 1.8 2000/04/10 22:43:13 ericm Exp $
- */
-
-#include "tkWinInt.h"
-
-typedef struct {
-    unsigned int keycode;
-    KeySym keysym;
-} Keys;
-
-static Keys keymap[] = {
-    VK_CANCEL, XK_Cancel,
-    VK_BACK, XK_BackSpace,
-    VK_TAB, XK_Tab,
-    VK_CLEAR, XK_Clear,
-    VK_RETURN, XK_Return,
-    VK_SHIFT, XK_Shift_L,
-    VK_CONTROL, XK_Control_L,
-    VK_MENU, XK_Alt_L,
-    VK_PAUSE, XK_Pause,
-    VK_CAPITAL, XK_Caps_Lock,
-    VK_ESCAPE, XK_Escape,
-    VK_SPACE, XK_space,
-    VK_PRIOR, XK_Prior,
-    VK_NEXT, XK_Next,
-    VK_END, XK_End,
-    VK_HOME, XK_Home,
-    VK_LEFT, XK_Left,
-    VK_UP, XK_Up,
-    VK_RIGHT, XK_Right,
-    VK_DOWN, XK_Down,
-    VK_SELECT, XK_Select,
-    VK_PRINT, XK_Print,
-    VK_EXECUTE, XK_Execute,
-    VK_INSERT, XK_Insert,
-    VK_DELETE, XK_Delete,
-    VK_HELP, XK_Help,
-    VK_F1, XK_F1,
-    VK_F2, XK_F2,
-    VK_F3, XK_F3,
-    VK_F4, XK_F4,
-    VK_F5, XK_F5,
-    VK_F6, XK_F6,
-    VK_F7, XK_F7,
-    VK_F8, XK_F8,
-    VK_F9, XK_F9,
-    VK_F10, XK_F10,
-    VK_F11, XK_F11,
-    VK_F12, XK_F12,
-    VK_F13, XK_F13,
-    VK_F14, XK_F14,
-    VK_F15, XK_F15,
-    VK_F16, XK_F16,
-    VK_F17, XK_F17,
-    VK_F18, XK_F18,
-    VK_F19, XK_F19,
-    VK_F20, XK_F20,
-    VK_F21, XK_F21,
-    VK_F22, XK_F22,
-    VK_F23, XK_F23,
-    VK_F24, XK_F24,
-    VK_NUMLOCK, XK_Num_Lock, 
-    VK_SCROLL, XK_Scroll_Lock,
-
-    /*
-     * The following support the new keys in the Microsoft keyboard.
-     * Win_L and Win_R have the windows logo.  App has the menu.
-     */
-
-    VK_LWIN, XK_Win_L,
-    VK_RWIN, XK_Win_R,
-    VK_APPS, XK_App,
-
-    0, NoSymbol
-};
-
-/*
- * Prototypes for local procedures defined in this file:
- */
-
-static KeySym		KeycodeToKeysym _ANSI_ARGS_((unsigned int keycode,
-			    int state, int noascii));
-
-/*
- *----------------------------------------------------------------------
- *
- * TkpGetString --
- *
- *	Retrieve the UTF string equivalent for the given keyboard event.
- *
- * Results:
- *	Returns the UTF string.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-char *
-TkpGetString(winPtr, eventPtr, dsPtr)
-    TkWindow *winPtr;		/* Window where event occurred:  needed to
-				 * get input context. */
-    XEvent *eventPtr;		/* X keyboard event. */
-    Tcl_DString *dsPtr;		/* Uninitialized or empty string to hold
-				 * result. */
-{
-    KeySym keysym;
-    XKeyEvent* keyEv = &eventPtr->xkey;
-
-    Tcl_DStringInit(dsPtr);
-    if (eventPtr->xkey.send_event != -1) {
-	/*
-	 * This is an event generated from generic code.  It has no
-	 * nchars or trans_chars members. 
-	 */
-
-	keysym = KeycodeToKeysym(eventPtr->xkey.keycode,
-		eventPtr->xkey.state, 0);
-	if (((keysym != NoSymbol) && (keysym > 0) && (keysym < 256)) 
-		|| (keysym == XK_Return)
-		|| (keysym == XK_Tab)) {
-	    char buf[TCL_UTF_MAX];
-	    int len = Tcl_UniCharToUtf((Tcl_UniChar) (keysym & 255), buf);
-	    Tcl_DStringAppend(dsPtr, buf, len);
-	}
-    } else if (eventPtr->xkey.nbytes > 0) {
-	Tcl_ExternalToUtfDString(NULL, eventPtr->xkey.trans_chars,
-		eventPtr->xkey.nbytes, dsPtr);
-    }
-    return Tcl_DStringValue(dsPtr);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * XKeycodeToKeysym --
- *
- *	Translate from a system-dependent keycode to a
- *	system-independent keysym.
- *
- * Results:
- *	Returns the translated keysym, or NoSymbol on failure.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-KeySym
-XKeycodeToKeysym(display, keycode, index)
-    Display* display;
-    unsigned int keycode;
-    int index;
-{
-    int state = 0;
-
-    if (index & 0x01) {
-	state |= ShiftMask;
-    }
-    return KeycodeToKeysym(keycode, state, 0);
-}
-
-
-
-/*
- *----------------------------------------------------------------------
- *
- * KeycodeToKeysym --
- *
- *	Translate from a system-dependent keycode to a
- *	system-independent keysym.
- *
- * Results:
- *	Returns the translated keysym, or NoSymbol on failure.
- *
- * Side effects:
- *	It may affect the internal state of the keyboard, such as
- *      remembered dead key or lock indicator lamps.
- *
- *----------------------------------------------------------------------
- */
-
-static KeySym
-KeycodeToKeysym(keycode, state, noascii)
-    unsigned int keycode;
-    int state;
-    int noascii;
-{
-    Keys* key;
-    BYTE keys[256];
-    int result, deadkey, shift;
-    char buf[4];
-    unsigned int scancode = MapVirtualKey(keycode, 0);
-
-    /*
-     * Do not run keycodes of lock keys through ToAscii().
-     * One of ToAscii()'s side effects is to handle the lights
-     * on the keyboard, and we don't want to mess that up.
-     */
-
-    if (noascii || keycode == VK_CAPITAL || keycode == VK_SCROLL ||
-	    keycode == VK_NUMLOCK)
-        goto skipToAscii;
-
-    /*
-     * Use MapVirtualKey() to detect some dead keys.
-     */
-
-    if (MapVirtualKey(keycode, 2) > 0x7fffUL)
-        return XK_Multi_key;
-
-    /*
-     * Set up a keyboard with correct modifiers
-     */
-
-    memset(keys, 0, 256);
-    if (state & ShiftMask)
-        keys[VK_SHIFT] = 0x80;
-    if (state & ControlMask)
-	keys[VK_CONTROL] = 0x80;
-    if (state & Mod2Mask)
-	keys[VK_MENU] = 0x80;
-
-    /* 
-     * Make sure all lock button info is correct so we don't mess up the
-     * lights
-     */
-
-    if (state & LockMask)
-	keys[VK_CAPITAL] = 1;
-    if (state & Mod3Mask)
-	keys[VK_SCROLL] = 1;
-    if (state & Mod1Mask)
-	keys[VK_NUMLOCK] = 1;
-
-    result = ToAscii(keycode, scancode, keys, (LPWORD) buf, 0);
-
-    if (result < 0) {
-        /*
-         * Win95/98:
-         * This was a dead char, which is now remembered by the keyboard.
-         * Call ToAscii() again to forget it.
-         * WinNT:
-         * This was a dead char, overwriting any previously remembered
-         * key. Calling ToAscii() again does not affect anything.
-         */
-
-        ToAscii(keycode, scancode, keys, (LPWORD) buf, 0);
-        return XK_Multi_key;
-    }
-    if (result == 2) {
-        /*
-         * This was a dead char, and there were one previously remembered
-         * by the keyboard.
-         * Call ToAscii() again with proper parameters to restore it.
-         */
-
-        /* 
-	 * Get information about the old char
-	 */
-
-        deadkey = VkKeyScan(buf[0]);
-        shift = deadkey >> 8;
-        deadkey &= 255;
-        scancode = MapVirtualKey(deadkey, 0);
-
-        /*
-	 * Set up a keyboard with proper modifier keys
-	 */
-
-        memset(keys, 0, 256);
-        if (shift & 1)
-            keys[VK_SHIFT] = 0x80;
-        if (shift & 2)
-            keys[VK_CONTROL] = 0x80;
-        if (shift & 4)
-            keys[VK_MENU] = 0x80;
-        ToAscii(deadkey, scancode, keys, (LPWORD) buf, 0);
-        return XK_Multi_key;
-    }
-
-    /*
-     * Keycode mapped to a valid Latin-1 character.  Since the keysyms
-     * for alphanumeric characters map onto Latin-1, we just return it.
-     */
-
-    if (result == 1 && UCHAR(buf[0]) >= 0x20) {
-	return (KeySym) UCHAR(buf[0]);
-    }
-
-    /*
-     * Keycode is a non-alphanumeric key, so we have to do the lookup.
-     */
-
-    skipToAscii:
-    for (key = keymap; key->keycode != 0; key++) {
-	if (key->keycode == keycode) {
-	    return key->keysym;
-	}
-    }
-
-    return NoSymbol;
-}
-
-
-/*
- *----------------------------------------------------------------------
- *
- * TkpGetKeySym --
- *
- *	Given an X KeyPress or KeyRelease event, map the
- *	keycode in the event into a KeySym.
- *
- * Results:
- *	The return value is the KeySym corresponding to
- *	eventPtr, or NoSymbol if no matching Keysym could be
- *	found.
- *
- * Side effects:
- *	In the first call for a given display, keycode-to-
- *	KeySym maps get loaded.
- *
- *----------------------------------------------------------------------
- */
-
-KeySym
-TkpGetKeySym(dispPtr, eventPtr)
-    TkDisplay *dispPtr;		/* Display in which to map keycode. */
-    XEvent *eventPtr;		/* Description of X event. */
-{
-    KeySym sym;
-    int state = eventPtr->xkey.state;
-
-    /*
-     * Refresh the mapping information if it's stale
-     */
-
-    if (dispPtr->bindInfoStale) {
-	TkpInitKeymapInfo(dispPtr);
-    }
-
-    sym = KeycodeToKeysym(eventPtr->xkey.keycode, state, 0);
-
-    /*
-     * Special handling: if this is a ctrl-alt or shifted key, and there
-     * is no keysym defined, try without the modifiers.
-     */
-
-    if ((sym == NoSymbol) && ((state & ControlMask) || (state & Mod2Mask))) {
-        state &=  ~(ControlMask | Mod2Mask);
-        sym = KeycodeToKeysym(eventPtr->xkey.keycode, state, 0);
-    }
-    if ((sym == NoSymbol) && (state & ShiftMask)) {
-        state &=  ~ShiftMask;
-        sym = KeycodeToKeysym(eventPtr->xkey.keycode, state, 0);
-    }
-    return sym;
-}
-
-/*
- *--------------------------------------------------------------
- *
- * TkpInitKeymapInfo --
- *
- *	This procedure is invoked to scan keymap information
- *	to recompute stuff that's important for binding, such
- *	as the modifier key (if any) that corresponds to "mode
- *	switch".
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Keymap-related information in dispPtr is updated.
- *
- *--------------------------------------------------------------
- */
-
-void
-TkpInitKeymapInfo(dispPtr)
-    TkDisplay *dispPtr;		/* Display for which to recompute keymap
-				 * information. */
-{
-    XModifierKeymap *modMapPtr;
-    KeyCode *codePtr;
-    KeySym keysym;
-    int count, i, j, max, arraySize;
-#define KEYCODE_ARRAY_SIZE 20
-
-    dispPtr->bindInfoStale = 0;
-    modMapPtr = XGetModifierMapping(dispPtr->display);
-
-    /*
-     * Check the keycodes associated with the Lock modifier.  If
-     * any of them is associated with the XK_Shift_Lock modifier,
-     * then Lock has to be interpreted as Shift Lock, not Caps Lock.
-     */
-
-    dispPtr->lockUsage = LU_IGNORE;
-    codePtr = modMapPtr->modifiermap + modMapPtr->max_keypermod*LockMapIndex;
-    for (count = modMapPtr->max_keypermod; count > 0; count--, codePtr++) {
-	if (*codePtr == 0) {
-	    continue;
-	}
-	keysym = KeycodeToKeysym(*codePtr, 0, 1);
-	if (keysym == XK_Shift_Lock) {
-	    dispPtr->lockUsage = LU_SHIFT;
-	    break;
-	}
-	if (keysym == XK_Caps_Lock) {
-	    dispPtr->lockUsage = LU_CAPS;
-	    break;
-	}
-    }
-
-    /*
-     * Look through the keycodes associated with modifiers to see if
-     * the the "mode switch", "meta", or "alt" keysyms are associated
-     * with any modifiers.  If so, remember their modifier mask bits.
-     */
-
-    dispPtr->modeModMask = 0;
-    dispPtr->metaModMask = 0;
-    dispPtr->altModMask = 0;
-    codePtr = modMapPtr->modifiermap;
-    max = 8*modMapPtr->max_keypermod;
-    for (i = 0; i < max; i++, codePtr++) {
-	if (*codePtr == 0) {
-	    continue;
-	}
-	keysym = KeycodeToKeysym(*codePtr, 0, 1);
-	if (keysym == XK_Mode_switch) {
-	    dispPtr->modeModMask |= ShiftMask << (i/modMapPtr->max_keypermod);
-	}
-	if ((keysym == XK_Meta_L) || (keysym == XK_Meta_R)) {
-	    dispPtr->metaModMask |= ShiftMask << (i/modMapPtr->max_keypermod);
-	}
-	if ((keysym == XK_Alt_L) || (keysym == XK_Alt_R)) {
-	    dispPtr->altModMask |= ShiftMask << (i/modMapPtr->max_keypermod);
-	}
-    }
-
-    /*
-     * Create an array of the keycodes for all modifier keys.
-     */
-
-    if (dispPtr->modKeyCodes != NULL) {
-	ckfree((char *) dispPtr->modKeyCodes);
-    }
-    dispPtr->numModKeyCodes = 0;
-    arraySize = KEYCODE_ARRAY_SIZE;
-    dispPtr->modKeyCodes = (KeyCode *) ckalloc((unsigned)
-	    (KEYCODE_ARRAY_SIZE * sizeof(KeyCode)));
-    for (i = 0, codePtr = modMapPtr->modifiermap; i < max; i++, codePtr++) {
-	if (*codePtr == 0) {
-	    continue;
-	}
-
-	/*
-	 * Make sure that the keycode isn't already in the array.
-	 */
-
-	for (j = 0; j < dispPtr->numModKeyCodes; j++) {
-	    if (dispPtr->modKeyCodes[j] == *codePtr) {
-		goto nextModCode;
-	    }
-	}
-	if (dispPtr->numModKeyCodes >= arraySize) {
-	    KeyCode *new;
-
-	    /*
-	     * Ran out of space in the array;  grow it.
-	     */
-
-	    arraySize *= 2;
-	    new = (KeyCode *) ckalloc((unsigned)
-		    (arraySize * sizeof(KeyCode)));
-	    memcpy((VOID *) new, (VOID *) dispPtr->modKeyCodes,
-		    (dispPtr->numModKeyCodes * sizeof(KeyCode)));
-	    ckfree((char *) dispPtr->modKeyCodes);
-	    dispPtr->modKeyCodes = new;
-	}
-	dispPtr->modKeyCodes[dispPtr->numModKeyCodes] = *codePtr;
-	dispPtr->numModKeyCodes++;
-	nextModCode: continue;
-    }
-    XFreeModifiermap(modMapPtr);
-}
-
-/*
- * When mapping from a keysym to a keycode, need
- * information about the modifier state that should be used
- * so that when they call XKeycodeToKeysym taking into
- * account the xkey.state, they will get back the original
- * keysym.
- */
-
-void
-TkpSetKeycodeAndState(tkwin, keySym, eventPtr)
-    Tk_Window tkwin;
-    KeySym keySym;
-    XEvent *eventPtr;
-{
-    Keys* key;
-    SHORT result;
-    int shift;
-    
-    eventPtr->xkey.keycode = 0;
-    if (keySym == NoSymbol) {
-        return;
-    }
-
-    /*
-     * We check our private map first for a virtual keycode,
-     * as VkKeyScan will return values that don't map to X
-     * for the "extended" Syms.  This may be due to just casting
-     * problems below, but this works.
-     */
-    
-    for (key = keymap; key->keycode != 0; key++) {
-        if (key->keysym == keySym) {
-            eventPtr->xkey.keycode = key->keycode;
-            return;
-        }
-    }
-
-    if (keySym >= 0x20) {
-	result = VkKeyScan((char) keySym);
-	if (result != -1) {
-            shift = result >> 8;
-            if (shift & 1)
-                eventPtr->xkey.state |= ShiftMask;
-            if (shift & 2)
-                eventPtr->xkey.state |= ControlMask;
-            if (shift & 4)
-                eventPtr->xkey.state |= Mod2Mask;
-            eventPtr->xkey.keycode = (KeyCode) (result & 0xff);
-	}
-    }
-    {
-        /* Debug log */
-        FILE *fp = fopen("c:\\temp\\tklog.txt", "a");
-        if (fp != NULL) {
-            fprintf(fp, "TkpSetKeycode. Keycode %d State %d Keysym %d\n", eventPtr->xkey.keycode, eventPtr->xkey.state, keySym);
-            fclose(fp);
-        }
-    }
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * XKeysymToKeycode --
- *
- *	Translate a keysym back into a keycode.
- *
- * Results:
- *	Returns the keycode that would generate the specified keysym.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-KeyCode
-XKeysymToKeycode(display, keysym)
-    Display* display;
-    KeySym keysym;
-{
-    Keys* key;
-    SHORT result;
-
-    /*
-     * We check our private map first for a virtual keycode,
-     * as VkKeyScan will return values that don't map to X
-     * for the "extended" Syms.  This may be due to just casting
-     * problems below, but this works.
-     */
-
-    for (key = keymap; key->keycode != 0; key++) {
-	if (key->keysym == keysym) {
-	    return key->keycode;
-	}
-    }
-
-    if (keysym >= 0x20) {
-	result = VkKeyScan((char) keysym);
-	if (result != -1) {
-	    return (KeyCode) (result & 0xff);
-	}
-    }
-
-    return 0;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * XGetModifierMapping --
- *
- *	Fetch the current keycodes used as modifiers.
- *
- * Results:
- *	Returns a new modifier map.
- *
- * Side effects:
- *	Allocates a new modifier map data structure.
- *
- *----------------------------------------------------------------------
- */
-
-XModifierKeymap	*
-XGetModifierMapping(display)
-    Display* display;
-{
-    XModifierKeymap *map = (XModifierKeymap *)ckalloc(sizeof(XModifierKeymap));
-
-    map->max_keypermod = 1;
-    map->modifiermap = (KeyCode *) ckalloc(sizeof(KeyCode)*8);
-    map->modifiermap[ShiftMapIndex] = VK_SHIFT;
-    map->modifiermap[LockMapIndex] = VK_CAPITAL;
-    map->modifiermap[ControlMapIndex] = VK_CONTROL;
-    map->modifiermap[Mod1MapIndex] = VK_NUMLOCK;
-    map->modifiermap[Mod2MapIndex] = VK_MENU;
-    map->modifiermap[Mod3MapIndex] = VK_SCROLL;
-    map->modifiermap[Mod4MapIndex] = 0;
-    map->modifiermap[Mod5MapIndex] = 0;
-    return map;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * XFreeModifiermap --
- *
- *	Deallocate a modifier map that was created by
- *	XGetModifierMapping.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Frees the datastructure referenced by modmap.
- *
- *----------------------------------------------------------------------
- */
-
-void
-XFreeModifiermap(modmap)
-    XModifierKeymap* modmap;
-{
-    ckfree((char *) modmap->modifiermap);
-    ckfree((char *) modmap);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * XStringToKeysym --
- *
- *	Translate a keysym name to the matching keysym. 
- *
- * Results:
- *	Returns the keysym.  Since this is already handled by
- *	Tk's StringToKeysym function, we just return NoSymbol.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-KeySym
-XStringToKeysym(string)
-    _Xconst char *string;
-{
-    return NoSymbol;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * XKeysymToString --
- *
- *	Convert a keysym to character form.
- *
- * Results:
- *	Returns NULL, since Tk will have handled this already.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-char *
-XKeysymToString(keysym)
-    KeySym keysym;
-{
-    return NULL;
-}
+/* 

+ * tkWinKey.c --

+ *

+ *	This file contains X emulation routines for keyboard related

+ *	functions.

+ *

+ * Copyright (c) 1995 Sun Microsystems, Inc.

+ *

+ * See the file "license.terms" for information on usage and redistribution

+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.

+ *

+ * RCS: @(#) $Id: tkWinKey.c,v 1.9 2000/04/14 01:36:35 ericm Exp $

+ */

+

+#include "tkWinInt.h"

+

+typedef struct {

+    unsigned int keycode;

+    KeySym keysym;

+} Keys;

+

+static Keys keymap[] = {

+    VK_CANCEL, XK_Cancel,

+    VK_BACK, XK_BackSpace,

+    VK_TAB, XK_Tab,

+    VK_CLEAR, XK_Clear,

+    VK_RETURN, XK_Return,

+    VK_SHIFT, XK_Shift_L,

+    VK_CONTROL, XK_Control_L,

+    VK_MENU, XK_Alt_L,

+    VK_PAUSE, XK_Pause,

+    VK_CAPITAL, XK_Caps_Lock,

+    VK_ESCAPE, XK_Escape,

+    VK_SPACE, XK_space,

+    VK_PRIOR, XK_Prior,

+    VK_NEXT, XK_Next,

+    VK_END, XK_End,

+    VK_HOME, XK_Home,

+    VK_LEFT, XK_Left,

+    VK_UP, XK_Up,

+    VK_RIGHT, XK_Right,

+    VK_DOWN, XK_Down,

+    VK_SELECT, XK_Select,

+    VK_PRINT, XK_Print,

+    VK_EXECUTE, XK_Execute,

+    VK_INSERT, XK_Insert,

+    VK_DELETE, XK_Delete,

+    VK_HELP, XK_Help,

+    VK_F1, XK_F1,

+    VK_F2, XK_F2,

+    VK_F3, XK_F3,

+    VK_F4, XK_F4,

+    VK_F5, XK_F5,

+    VK_F6, XK_F6,

+    VK_F7, XK_F7,

+    VK_F8, XK_F8,

+    VK_F9, XK_F9,

+    VK_F10, XK_F10,

+    VK_F11, XK_F11,

+    VK_F12, XK_F12,

+    VK_F13, XK_F13,

+    VK_F14, XK_F14,

+    VK_F15, XK_F15,

+    VK_F16, XK_F16,

+    VK_F17, XK_F17,

+    VK_F18, XK_F18,

+    VK_F19, XK_F19,

+    VK_F20, XK_F20,

+    VK_F21, XK_F21,

+    VK_F22, XK_F22,

+    VK_F23, XK_F23,

+    VK_F24, XK_F24,

+    VK_NUMLOCK, XK_Num_Lock, 

+    VK_SCROLL, XK_Scroll_Lock,

+

+    /*

+     * The following support the new keys in the Microsoft keyboard.

+     * Win_L and Win_R have the windows logo.  App has the menu.

+     */

+

+    VK_LWIN, XK_Win_L,

+    VK_RWIN, XK_Win_R,

+    VK_APPS, XK_App,

+

+    0, NoSymbol

+};

+

+/*

+ * Prototypes for local procedures defined in this file:

+ */

+

+static KeySym		KeycodeToKeysym _ANSI_ARGS_((unsigned int keycode,

+			    int state, int noascii));

+

+/*

+ *----------------------------------------------------------------------

+ *

+ * TkpGetString --

+ *

+ *	Retrieve the UTF string equivalent for the given keyboard event.

+ *

+ * Results:

+ *	Returns the UTF string.

+ *

+ * Side effects:

+ *	None.

+ *

+ *----------------------------------------------------------------------

+ */

+

+char *

+TkpGetString(winPtr, eventPtr, dsPtr)

+    TkWindow *winPtr;		/* Window where event occurred:  needed to

+				 * get input context. */

+    XEvent *eventPtr;		/* X keyboard event. */

+    Tcl_DString *dsPtr;		/* Uninitialized or empty string to hold

+				 * result. */

+{

+    KeySym keysym;

+    XKeyEvent* keyEv = &eventPtr->xkey;

+

+    Tcl_DStringInit(dsPtr);

+    if (eventPtr->xkey.send_event != -1) {

+	/*

+	 * This is an event generated from generic code.  It has no

+	 * nchars or trans_chars members. 

+	 */

+

+	keysym = KeycodeToKeysym(eventPtr->xkey.keycode,

+		eventPtr->xkey.state, 0);

+	if (((keysym != NoSymbol) && (keysym > 0) && (keysym < 256)) 

+		|| (keysym == XK_Return)

+		|| (keysym == XK_Tab)) {

+	    char buf[TCL_UTF_MAX];

+	    int len = Tcl_UniCharToUtf((Tcl_UniChar) (keysym & 255), buf);

+	    Tcl_DStringAppend(dsPtr, buf, len);

+	}

+    } else if (eventPtr->xkey.nbytes > 0) {

+	Tcl_ExternalToUtfDString(NULL, eventPtr->xkey.trans_chars,

+		eventPtr->xkey.nbytes, dsPtr);

+    }

+    return Tcl_DStringValue(dsPtr);

+}

+

+/*

+ *----------------------------------------------------------------------

+ *

+ * XKeycodeToKeysym --

+ *

+ *	Translate from a system-dependent keycode to a

+ *	system-independent keysym.

+ *

+ * Results:

+ *	Returns the translated keysym, or NoSymbol on failure.

+ *

+ * Side effects:

+ *	None.

+ *

+ *----------------------------------------------------------------------

+ */

+

+KeySym

+XKeycodeToKeysym(display, keycode, index)

+    Display* display;

+    unsigned int keycode;

+    int index;

+{

+    int state = 0;

+

+    if (index & 0x01) {

+	state |= ShiftMask;

+    }

+    return KeycodeToKeysym(keycode, state, 0);

+}

+

+

+

+/*

+ *----------------------------------------------------------------------

+ *

+ * KeycodeToKeysym --

+ *

+ *	Translate from a system-dependent keycode to a

+ *	system-independent keysym.

+ *

+ * Results:

+ *	Returns the translated keysym, or NoSymbol on failure.

+ *

+ * Side effects:

+ *	It may affect the internal state of the keyboard, such as

+ *      remembered dead key or lock indicator lamps.

+ *

+ *----------------------------------------------------------------------

+ */

+

+static KeySym

+KeycodeToKeysym(keycode, state, noascii)

+    unsigned int keycode;

+    int state;

+    int noascii;

+{

+    Keys* key;

+    BYTE keys[256];

+    int result, deadkey, shift;

+    char buf[4];

+    unsigned int scancode = MapVirtualKey(keycode, 0);

+

+    /*

+     * Do not run keycodes of lock keys through ToAscii().

+     * One of ToAscii()'s side effects is to handle the lights

+     * on the keyboard, and we don't want to mess that up.

+     */

+

+    if (noascii || keycode == VK_CAPITAL || keycode == VK_SCROLL ||

+	    keycode == VK_NUMLOCK)

+        goto skipToAscii;

+

+    /*

+     * Use MapVirtualKey() to detect some dead keys.

+     */

+

+    if (MapVirtualKey(keycode, 2) > 0x7fffUL)

+        return XK_Multi_key;

+

+    /*

+     * Set up a keyboard with correct modifiers

+     */

+

+    memset(keys, 0, 256);

+    if (state & ShiftMask)

+        keys[VK_SHIFT] = 0x80;

+    if (state & ControlMask)

+	keys[VK_CONTROL] = 0x80;

+    if (state & Mod2Mask)

+	keys[VK_MENU] = 0x80;

+

+    /* 

+     * Make sure all lock button info is correct so we don't mess up the

+     * lights

+     */

+

+    if (state & LockMask)

+	keys[VK_CAPITAL] = 1;

+    if (state & Mod3Mask)

+	keys[VK_SCROLL] = 1;

+    if (state & Mod1Mask)

+	keys[VK_NUMLOCK] = 1;

+

+    result = ToAscii(keycode, scancode, keys, (LPWORD) buf, 0);

+

+    if (result < 0) {

+        /*

+         * Win95/98:

+         * This was a dead char, which is now remembered by the keyboard.

+         * Call ToAscii() again to forget it.

+         * WinNT:

+         * This was a dead char, overwriting any previously remembered

+         * key. Calling ToAscii() again does not affect anything.

+         */

+

+        ToAscii(keycode, scancode, keys, (LPWORD) buf, 0);

+        return XK_Multi_key;

+    }

+    if (result == 2) {

+        /*

+         * This was a dead char, and there were one previously remembered

+         * by the keyboard.

+         * Call ToAscii() again with proper parameters to restore it.

+         */

+

+        /* 

+	 * Get information about the old char

+	 */

+

+        deadkey = VkKeyScan(buf[0]);

+        shift = deadkey >> 8;

+        deadkey &= 255;

+        scancode = MapVirtualKey(deadkey, 0);

+

+        /*

+	 * Set up a keyboard with proper modifier keys

+	 */

+

+        memset(keys, 0, 256);

+        if (shift & 1)

+            keys[VK_SHIFT] = 0x80;

+        if (shift & 2)

+            keys[VK_CONTROL] = 0x80;

+        if (shift & 4)

+            keys[VK_MENU] = 0x80;

+        ToAscii(deadkey, scancode, keys, (LPWORD) buf, 0);

+        return XK_Multi_key;

+    }

+

+    /*

+     * Keycode mapped to a valid Latin-1 character.  Since the keysyms

+     * for alphanumeric characters map onto Latin-1, we just return it.

+     */

+

+    if (result == 1 && UCHAR(buf[0]) >= 0x20) {

+	return (KeySym) UCHAR(buf[0]);

+    }

+

+    /*

+     * Keycode is a non-alphanumeric key, so we have to do the lookup.

+     */

+

+    skipToAscii:

+    for (key = keymap; key->keycode != 0; key++) {

+	if (key->keycode == keycode) {

+	    /*

+	     * Windows only gives us an undifferentiated VK_CONTROL

+	     * code (for example) when either Control key is pressed.

+	     * To distinguish between left and right, we have to query the

+	     * state of one of the two to determine which was actually

+	     * pressed.  So if the keycode indicates Control, Shift, or Menu

+	     * (the key that everybody else calls Alt), do this extra test.

+	     * If the right-side key was pressed, return the appropriate

+	     * keycode.  Otherwise, we fall through and rely on the

+	     * keymap table to hold the correct keysym value.

+	     */

+	    switch (keycode) {

+		case VK_CONTROL: {

+		    if (GetKeyState(VK_RCONTROL) & 0x80) {

+			return XK_Control_R;

+		    }

+		    break;

+		}

+		case VK_SHIFT: {

+		    if (GetKeyState(VK_RSHIFT) & 0x80) {

+			return XK_Shift_R;

+		    }

+		    break;

+		}

+		case VK_MENU: {

+		    if (GetKeyState(VK_RMENU) & 0x80) {

+			return XK_Alt_R;

+		    }

+		    break;

+		}

+	    }

+	    return key->keysym;

+	}

+    }

+

+    return NoSymbol;

+}

+

+

+/*

+ *----------------------------------------------------------------------

+ *

+ * TkpGetKeySym --

+ *

+ *	Given an X KeyPress or KeyRelease event, map the

+ *	keycode in the event into a KeySym.

+ *

+ * Results:

+ *	The return value is the KeySym corresponding to

+ *	eventPtr, or NoSymbol if no matching Keysym could be

+ *	found.

+ *

+ * Side effects:

+ *	In the first call for a given display, keycode-to-

+ *	KeySym maps get loaded.

+ *

+ *----------------------------------------------------------------------

+ */

+

+KeySym

+TkpGetKeySym(dispPtr, eventPtr)

+    TkDisplay *dispPtr;		/* Display in which to map keycode. */

+    XEvent *eventPtr;		/* Description of X event. */

+{

+    KeySym sym;

+    int state = eventPtr->xkey.state;

+

+    /*

+     * Refresh the mapping information if it's stale

+     */

+

+    if (dispPtr->bindInfoStale) {

+	TkpInitKeymapInfo(dispPtr);

+    }

+

+    sym = KeycodeToKeysym(eventPtr->xkey.keycode, state, 0);

+

+    /*

+     * Special handling: if this is a ctrl-alt or shifted key, and there

+     * is no keysym defined, try without the modifiers.

+     */

+

+    if ((sym == NoSymbol) && ((state & ControlMask) || (state & Mod2Mask))) {

+        state &=  ~(ControlMask | Mod2Mask);

+        sym = KeycodeToKeysym(eventPtr->xkey.keycode, state, 0);

+    }

+    if ((sym == NoSymbol) && (state & ShiftMask)) {

+        state &=  ~ShiftMask;

+        sym = KeycodeToKeysym(eventPtr->xkey.keycode, state, 0);

+    }

+    return sym;

+}

+

+/*

+ *--------------------------------------------------------------

+ *

+ * TkpInitKeymapInfo --

+ *

+ *	This procedure is invoked to scan keymap information

+ *	to recompute stuff that's important for binding, such

+ *	as the modifier key (if any) that corresponds to "mode

+ *	switch".

+ *

+ * Results:

+ *	None.

+ *

+ * Side effects:

+ *	Keymap-related information in dispPtr is updated.

+ *

+ *--------------------------------------------------------------

+ */

+

+void

+TkpInitKeymapInfo(dispPtr)

+    TkDisplay *dispPtr;		/* Display for which to recompute keymap

+				 * information. */

+{

+    XModifierKeymap *modMapPtr;

+    KeyCode *codePtr;

+    KeySym keysym;

+    int count, i, j, max, arraySize;

+#define KEYCODE_ARRAY_SIZE 20

+

+    dispPtr->bindInfoStale = 0;

+    modMapPtr = XGetModifierMapping(dispPtr->display);

+

+    /*

+     * Check the keycodes associated with the Lock modifier.  If

+     * any of them is associated with the XK_Shift_Lock modifier,

+     * then Lock has to be interpreted as Shift Lock, not Caps Lock.

+     */

+

+    dispPtr->lockUsage = LU_IGNORE;

+    codePtr = modMapPtr->modifiermap + modMapPtr->max_keypermod*LockMapIndex;

+    for (count = modMapPtr->max_keypermod; count > 0; count--, codePtr++) {

+	if (*codePtr == 0) {

+	    continue;

+	}

+	keysym = KeycodeToKeysym(*codePtr, 0, 1);

+	if (keysym == XK_Shift_Lock) {

+	    dispPtr->lockUsage = LU_SHIFT;

+	    break;

+	}

+	if (keysym == XK_Caps_Lock) {

+	    dispPtr->lockUsage = LU_CAPS;

+	    break;

+	}

+    }

+

+    /*

+     * Look through the keycodes associated with modifiers to see if

+     * the the "mode switch", "meta", or "alt" keysyms are associated

+     * with any modifiers.  If so, remember their modifier mask bits.

+     */

+

+    dispPtr->modeModMask = 0;

+    dispPtr->metaModMask = 0;

+    dispPtr->altModMask = 0;

+    codePtr = modMapPtr->modifiermap;

+    max = 8*modMapPtr->max_keypermod;

+    for (i = 0; i < max; i++, codePtr++) {

+	if (*codePtr == 0) {

+	    continue;

+	}

+	keysym = KeycodeToKeysym(*codePtr, 0, 1);

+	if (keysym == XK_Mode_switch) {

+	    dispPtr->modeModMask |= ShiftMask << (i/modMapPtr->max_keypermod);

+	}

+	if ((keysym == XK_Meta_L) || (keysym == XK_Meta_R)) {

+	    dispPtr->metaModMask |= ShiftMask << (i/modMapPtr->max_keypermod);

+	}

+	if ((keysym == XK_Alt_L) || (keysym == XK_Alt_R)) {

+	    dispPtr->altModMask |= ShiftMask << (i/modMapPtr->max_keypermod);

+	}

+    }

+

+    /*

+     * Create an array of the keycodes for all modifier keys.

+     */

+

+    if (dispPtr->modKeyCodes != NULL) {

+	ckfree((char *) dispPtr->modKeyCodes);

+    }

+    dispPtr->numModKeyCodes = 0;

+    arraySize = KEYCODE_ARRAY_SIZE;

+    dispPtr->modKeyCodes = (KeyCode *) ckalloc((unsigned)

+	    (KEYCODE_ARRAY_SIZE * sizeof(KeyCode)));

+    for (i = 0, codePtr = modMapPtr->modifiermap; i < max; i++, codePtr++) {

+	if (*codePtr == 0) {

+	    continue;

+	}

+

+	/*

+	 * Make sure that the keycode isn't already in the array.

+	 */

+

+	for (j = 0; j < dispPtr->numModKeyCodes; j++) {

+	    if (dispPtr->modKeyCodes[j] == *codePtr) {

+		goto nextModCode;

+	    }

+	}

+	if (dispPtr->numModKeyCodes >= arraySize) {

+	    KeyCode *new;

+

+	    /*

+	     * Ran out of space in the array;  grow it.

+	     */

+

+	    arraySize *= 2;

+	    new = (KeyCode *) ckalloc((unsigned)

+		    (arraySize * sizeof(KeyCode)));

+	    memcpy((VOID *) new, (VOID *) dispPtr->modKeyCodes,

+		    (dispPtr->numModKeyCodes * sizeof(KeyCode)));

+	    ckfree((char *) dispPtr->modKeyCodes);

+	    dispPtr->modKeyCodes = new;

+	}

+	dispPtr->modKeyCodes[dispPtr->numModKeyCodes] = *codePtr;

+	dispPtr->numModKeyCodes++;

+	nextModCode: continue;

+    }

+    XFreeModifiermap(modMapPtr);

+}

+

+/*

+ * When mapping from a keysym to a keycode, need

+ * information about the modifier state that should be used

+ * so that when they call XKeycodeToKeysym taking into

+ * account the xkey.state, they will get back the original

+ * keysym.

+ */

+

+void

+TkpSetKeycodeAndState(tkwin, keySym, eventPtr)

+    Tk_Window tkwin;

+    KeySym keySym;

+    XEvent *eventPtr;

+{

+    Keys* key;

+    SHORT result;

+    int shift;

+    

+    eventPtr->xkey.keycode = 0;

+    if (keySym == NoSymbol) {

+        return;

+    }

+

+    /*

+     * We check our private map first for a virtual keycode,

+     * as VkKeyScan will return values that don't map to X

+     * for the "extended" Syms.  This may be due to just casting

+     * problems below, but this works.

+     */

+    

+    for (key = keymap; key->keycode != 0; key++) {

+        if (key->keysym == keySym) {

+            eventPtr->xkey.keycode = key->keycode;

+            return;

+        }

+    }

+

+    if (keySym >= 0x20) {

+	result = VkKeyScan((char) keySym);

+	if (result != -1) {

+            shift = result >> 8;

+            if (shift & 1)

+                eventPtr->xkey.state |= ShiftMask;

+            if (shift & 2)

+                eventPtr->xkey.state |= ControlMask;

+            if (shift & 4)

+                eventPtr->xkey.state |= Mod2Mask;

+            eventPtr->xkey.keycode = (KeyCode) (result & 0xff);

+	}

+    }

+    {

+        /* Debug log */

+        FILE *fp = fopen("c:\\temp\\tklog.txt", "a");

+        if (fp != NULL) {

+            fprintf(fp, "TkpSetKeycode. Keycode %d State %d Keysym %d\n", eventPtr->xkey.keycode, eventPtr->xkey.state, keySym);

+            fclose(fp);

+        }

+    }

+}

+

+/*

+ *----------------------------------------------------------------------

+ *

+ * XKeysymToKeycode --

+ *

+ *	Translate a keysym back into a keycode.

+ *

+ * Results:

+ *	Returns the keycode that would generate the specified keysym.

+ *

+ * Side effects:

+ *	None.

+ *

+ *----------------------------------------------------------------------

+ */

+

+KeyCode

+XKeysymToKeycode(display, keysym)

+    Display* display;

+    KeySym keysym;

+{

+    Keys* key;

+    SHORT result;

+

+    /*

+     * We check our private map first for a virtual keycode,

+     * as VkKeyScan will return values that don't map to X

+     * for the "extended" Syms.  This may be due to just casting

+     * problems below, but this works.

+     */

+

+    for (key = keymap; key->keycode != 0; key++) {

+	if (key->keysym == keysym) {

+	    return key->keycode;

+	}

+    }

+

+    if (keysym >= 0x20) {

+	result = VkKeyScan((char) keysym);

+	if (result != -1) {

+	    return (KeyCode) (result & 0xff);

+	}

+    }

+

+    return 0;

+}

+

+/*

+ *----------------------------------------------------------------------

+ *

+ * XGetModifierMapping --

+ *

+ *	Fetch the current keycodes used as modifiers.

+ *

+ * Results:

+ *	Returns a new modifier map.

+ *

+ * Side effects:

+ *	Allocates a new modifier map data structure.

+ *

+ *----------------------------------------------------------------------

+ */

+

+XModifierKeymap	*

+XGetModifierMapping(display)

+    Display* display;

+{

+    XModifierKeymap *map = (XModifierKeymap *)ckalloc(sizeof(XModifierKeymap));

+

+    map->max_keypermod = 1;

+    map->modifiermap = (KeyCode *) ckalloc(sizeof(KeyCode)*8);

+    map->modifiermap[ShiftMapIndex] = VK_SHIFT;

+    map->modifiermap[LockMapIndex] = VK_CAPITAL;

+    map->modifiermap[ControlMapIndex] = VK_CONTROL;

+    map->modifiermap[Mod1MapIndex] = VK_NUMLOCK;

+    map->modifiermap[Mod2MapIndex] = VK_MENU;

+    map->modifiermap[Mod3MapIndex] = VK_SCROLL;

+    map->modifiermap[Mod4MapIndex] = 0;

+    map->modifiermap[Mod5MapIndex] = 0;

+    return map;

+}

+

+/*

+ *----------------------------------------------------------------------

+ *

+ * XFreeModifiermap --

+ *

+ *	Deallocate a modifier map that was created by

+ *	XGetModifierMapping.

+ *

+ * Results:

+ *	None.

+ *

+ * Side effects:

+ *	Frees the datastructure referenced by modmap.

+ *

+ *----------------------------------------------------------------------

+ */

+

+void

+XFreeModifiermap(modmap)

+    XModifierKeymap* modmap;

+{

+    ckfree((char *) modmap->modifiermap);

+    ckfree((char *) modmap);

+}

+

+/*

+ *----------------------------------------------------------------------

+ *

+ * XStringToKeysym --

+ *

+ *	Translate a keysym name to the matching keysym. 

+ *

+ * Results:

+ *	Returns the keysym.  Since this is already handled by

+ *	Tk's StringToKeysym function, we just return NoSymbol.

+ *

+ * Side effects:

+ *	None.

+ *

+ *----------------------------------------------------------------------

+ */

+

+KeySym

+XStringToKeysym(string)

+    _Xconst char *string;

+{

+    return NoSymbol;

+}

+

+/*

+ *----------------------------------------------------------------------

+ *

+ * XKeysymToString --

+ *

+ *	Convert a keysym to character form.

+ *

+ * Results:

+ *	Returns NULL, since Tk will have handled this already.

+ *

+ * Side effects:

+ *	None.

+ *

+ *----------------------------------------------------------------------

+ */

+

+char *

+XKeysymToString(keysym)

+    KeySym keysym;

+{

+    return NULL;

+}