/*	File: D:\WACKER\tdll\termproc.c (Created: 06-Dec-1993)
 *
 *	Copyright 1994 by Hilgraeve Inc. -- Monroe, MI
 *	All rights reserved
 *
 *	$Revision: 8 $
 *	$Date: 5/29/02 2:17p $
 */

#include <windows.h>
#include <imm.h>
#pragma hdrstop
// #define	DEBUGSTR	1

#include "stdtyp.h"
#include "sf.h"
#include "sess_ids.h"
#include "assert.h"
#include "session.h"
#include "backscrl.h"
#include "timers.h"
#if defined(INCL_KEY_MACROS)
#include "keyutil.h"
#endif
#include "chars.h"
#include "cloop.h"
#include "misc.h"
#include <emu\emu.h>
#include "term.h"
#include "term.hh"

// When parsing values for mouse moves, scrolls, etc. HIWORD and LOWORD
// clip the sign extension since these are 16 bit values.  These macros
// cast the result to a short so that sign extension works correctly

#define LOSHORT(x)	((short)LOWORD(x))
#define HISHORT(x)	((short)HIWORD(x))

// HORZPAGESIZE represents the size in columns of one page horizontally.
// We need this for two reasons.  1) We need a page size so we know how far
// to skip when user "pages" horizontally using the scrollbar.	2) So we
// have a size to set for the thumb size.  Ten is arbritary but seems
// about right. - mrw

#define HORZPAGESIZE	10

/* --- static function prototypes ---*/

static void TP_WM_CREATE(const HWND hwnd);

static void TP_WM_CHAR(const HWND hwnd, const UINT message,
					   const WPARAM wPar, const LPARAM lPar);

static void TP_WM_IME_CHAR(const HWND hwnd, const UINT message,
					  		const WPARAM wPar, const LPARAM lPar);

static int kabExpandMacroKey( const HSESSION hSession, KEY_T aKey );
static void TP_WM_TERM_KEY(const HWND hwnd, KEY_T Key);
static void TP_WM_SETFOCUS(const HWND hwnd);
static void TP_WM_KILLFOCUS(const HWND hwnd);
static void TP_WM_VSCROLL(HWND hwnd, int nCode, int nPos, HWND hwndScrl);
static void TP_WM_HSCROLL(HWND hwnd, int nCode, int nPos, HWND hwndScrl);
static void TP_WM_TERM_TRACK(const HHTERM hhTerm, const int fForce);
static void TP_WM_EMU_SETTINGS(const HHTERM hhTerm);
static int TP_WM_TERM_LOAD_SETTINGS(const HHTERM hhTerm);
static int TP_WM_TERM_SAVE_SETTINGS(const HHTERM hhTerm);
static void TP_WM_TERM_FORCE_WMSIZE(const HHTERM hhTerm);

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TermProc
 *
 * DESCRIPTION:
 *	Terminal window
 *
 * ARGUMENTS:
 *	Standard CALLBACK args
 *
 * RETURNS:
 *	Standard CALLBACK codes
 *
 */
LRESULT CALLBACK TermProc(HWND hwnd, UINT uMsg, WPARAM wPar, LPARAM lPar)
	{
	HHTERM hhTerm;

	switch (uMsg)
		{
		case WM_HELP:
			// We do not want start the help engine due to F1 when function
			// keys are being interpreted as terminal keys
			// (NOT Windows keys). JRJ 12/94
			//
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);

			if(emuIsEmuKey(sessQueryEmuHdl(hhTerm->hSession),
					VIRTUAL_KEY | VK_F1))
				{
		    	return 0;
				}

			break;

		case WM_CREATE:
			TP_WM_CREATE(hwnd);
			return 0;

		case WM_SIZE:
			TP_WM_SIZE(hwnd, (unsigned)wPar, LOSHORT(lPar), HISHORT(lPar));
			return 0;

		case WM_IME_CHAR:
			TP_WM_IME_CHAR(hwnd, uMsg, wPar, lPar);
			return 0;

		case WM_KEYDOWN:
		case WM_CHAR:
			TP_WM_CHAR(hwnd, uMsg, wPar, lPar);
			return 0;

		case WM_PAINT:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			termPaint(hhTerm, hwnd);
			return 0;

		case WM_SYSCOLORCHANGE:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			termSysColorChng(hhTerm);
			return 0;

		case WM_SETFOCUS:
			TP_WM_SETFOCUS(hwnd);
			return 0;

		case WM_KILLFOCUS:
			TP_WM_KILLFOCUS(hwnd);
			return 0;

		case WM_VSCROLL:
			TP_WM_VSCROLL(hwnd, LOWORD(wPar), HISHORT(wPar), (HWND)lPar);
			return 0;

		case WM_HSCROLL:
			TP_WM_HSCROLL(hwnd, LOWORD(wPar), HISHORT(wPar), (HWND)lPar);
			return 0;

		case WM_LBUTTONDOWN:
			TP_WM_LBTNDN(hwnd, (unsigned)wPar, LOSHORT(lPar), HISHORT(lPar));
			return 0;

		case WM_MOUSEMOVE:
			TP_WM_MOUSEMOVE(hwnd, (unsigned)wPar, LOSHORT(lPar), HISHORT(lPar));
			return 0;

		case WM_LBUTTONUP:
			TP_WM_LBTNUP(hwnd, (unsigned)wPar, LOSHORT(lPar), HISHORT(lPar));
			return 0;

		case WM_LBUTTONDBLCLK:
			TP_WM_LBTNDBLCLK(hwnd, (unsigned)wPar, LOSHORT(lPar), HISHORT(lPar));
			return 0;

		case WM_DESTROY:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			DestroyTerminalHdl(hhTerm);
			hhTerm = NULL;
			return 0;

		/* --- Public terminal messages --- */

		case WM_TERM_GETUPDATE:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			termGetUpdate(hhTerm, TRUE);
			return 0;

		case WM_TERM_BEZEL:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			hhTerm->xBezel = (hhTerm->xBezel) ? 0 : BEZEL_SIZE;

			// Need to recompute scrollbar min's and max's since the
			// presence/absence of the bezel affects these items.  This
			// is done in the WM_SIZE handler and can be called directly
			// with the current client size.

			TP_WM_SIZE(hwnd, SIZE_RESTORED, hhTerm->cx, hhTerm->cy);
			InvalidateRect(hwnd, 0, FALSE);
			return 0;

		case WM_TERM_Q_BEZEL:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			return hhTerm->xBezel;

		case WM_TERM_Q_SNAP:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			termQuerySnapRect(hhTerm, (LPRECT)lPar);
			return 0;

		case WM_TERM_KEY:
			TP_WM_TERM_KEY(hwnd, (unsigned)wPar);
			return 0;

        case WM_TERM_CLRATTR:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			termSetClrAttr(hhTerm);
			return 0;

		case WM_TERM_GETLOGFONT:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			*(PLOGFONT)lPar = hhTerm->lf;
			return 0;

		case WM_TERM_SETLOGFONT:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			termSetFont(hhTerm, (PLOGFONT)lPar);
			return 0;

		case WM_TERM_Q_MARKED:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			return hhTerm->fMarkingLock;

		case WM_TERM_UNMARK:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			LinkCursors(hhTerm);
			return 0;

		case WM_TERM_MARK_ALL:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			MarkTextAll(hhTerm);
			return 0;

		case WM_TERM_TRACK:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			TP_WM_TERM_TRACK(hhTerm, (int)wPar);
			return 0;

		case WM_TERM_EMU_SETTINGS:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			TP_WM_EMU_SETTINGS(hhTerm);
			return 0;

		case WM_TERM_Q_MARKED_RANGE:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			*(PPOINT)wPar = hhTerm->ptBeg;
			*(PPOINT)lPar = hhTerm->ptEnd;
			return 0;
			
		case WM_TERM_LOAD_SETTINGS:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			TP_WM_TERM_LOAD_SETTINGS(hhTerm);
			return 0;
			
		case WM_TERM_SAVE_SETTINGS:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			TP_WM_TERM_SAVE_SETTINGS(hhTerm);
			return 0;

		case WM_TERM_FORCE_WMSIZE:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			TP_WM_TERM_FORCE_WMSIZE(hhTerm);
			return 0;
		
		/* --- Private terminal messages --- */

		case WM_TERM_SCRLMARK:
			MarkingTimerProc((void *)hwnd, 0);
			return 0;

		case WM_TERM_KLUDGE_FONT:
			hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
			termSetFont(hhTerm, &hhTerm->lfHold);
			RefreshTermWindow(hwnd);
			return 0;

		default:
			break;
		}

	return DefWindowProc(hwnd, uMsg, wPar, lPar);
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_CREATE
 *
 * DESCRIPTION:
 *	Create message processor for terminal window.
 *
 * ARGUMENTS:
 *	hwnd	- terminal window handle
 *
 * RETURNS:
 *	void
 *
 */
static void TP_WM_CREATE(const HWND hwnd)
	{
	HHTERM hhTerm;
	SCROLLINFO scrinf;
#if(WINVER >= 0x0500)
	LONG_PTR ExStyle;

	ExStyle = GetWindowLongPtr(hwnd, GWL_EXSTYLE);
	//
	// [mhamid] If it is mirrored then turn off mirroing.
	//
	if (ExStyle & WS_EX_LAYOUTRTL)
		{
		SetWindowLongPtr(hwnd, GWL_EXSTYLE, (LONG_PTR)(ExStyle & ~WS_EX_LAYOUTRTL));
		}
#endif // WINVER >= 0x0500

	// Create an internal handle for instance data storage.

	hhTerm = CreateTerminalHdl(hwnd);

	// Need to set this even if hTerm is 0 so WM_DESTROY works.

	SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)hhTerm);

	if (hhTerm == 0)
		{
		assert(FALSE);
		ExitProcess(1);
		}

	scrinf.cbSize = sizeof(scrinf);
	scrinf.fMask = SIF_DISABLENOSCROLL;
	SetScrollInfo(hwnd, SB_VERT, &scrinf, 0);
	return;
	}

#if 0
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_CMD
 *
 * DESCRIPTION:
 *	WM_COMMAND processor for TermProc()
 *
 * ARGUMENTS:
 *	hwnd		- terminal window handle
 *	nId 		- item, control, or accelerator identifier
 *	nNotify 	- notification code
 *	hwndCtrl	- handle of control
 *
 * RETURNS:
 *	void
 *
 */
static void TP_WM_CMD(const HWND hwnd, const int nId, const int nNotify,
					  const HWND hwndCtrl)
	{
	const HHTERM hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);

	switch (nId)
		{
		case WM_USER:
			break;
		}

	return;
	}
#endif

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_SIZE
 *
 * DESCRIPTION:
 *	WM_SIZE message processor for termproc.  If iWidth and iHite are zero,
 *	then the window sizes itself to fit the session window accounting for
 *	statusbars and toolbars.
 *
 * ARGUMENTS:
 *	hwnd		- terminal window
 *	fwSizeType	- from WM_SIZE
 *	iWidth		- width of window
 *	iHite		- hite of window
 *
 * RETURNS:
 *	void
 *
 */
void TP_WM_SIZE(const HWND hwnd,
				const unsigned fwSizeType,
				const int iWidth,
				const int iHite)
	{
	RECT rc, rcTmp;
	int i, j, k;
	SCROLLINFO scrinf;
	const HHTERM hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);
	const HWND hwndToolbar = sessQueryHwndToolbar(hhTerm->hSession);
	const HWND hwndStatusbar = sessQueryHwndStatusbar(hhTerm->hSession);
	const HWND hwndSidebar = sessQuerySidebarHwnd(hhTerm->hSession);

	// If the window is hidden, we really don't need to do anything.

	if (!IsWindowVisible(hwnd))
		return;

	// If we get a message with 0, 0 for width, hite, make terminal window
	// fit the session window less the toolbar and statusbar if present.

	if (iWidth == 0 && iHite == 0)
		{
		GetClientRect(hhTerm->hwndSession, &rc);

		// Note: See if we can use sessQuery funcs for
		// this
		if (IsWindow(hwndToolbar) && IsWindowVisible(hwndToolbar))
			{
			GetWindowRect(hwndToolbar, &rcTmp);
			rc.top += (rcTmp.bottom - rcTmp.top);
			}

		if (IsWindow(hwndStatusbar) && IsWindowVisible(hwndStatusbar))
			{
			GetWindowRect(hwndStatusbar, &rcTmp);
			rc.bottom -= (rcTmp.bottom - rcTmp.top);
			rc.bottom += 2 * GetSystemMetrics(SM_CYBORDER);
			}

		if (IsWindow(hwndSidebar) && IsWindowVisible(hwndSidebar))
			{
			GetWindowRect(hwndSidebar, &rcTmp);
			rc.left += (rcTmp.right - rcTmp.left);
			}

		MoveWindow(hwnd, rc.left, rc.top, rc.right-rc.left, rc.bottom-rc.top,
			TRUE);
		}

	// Compute size related items.

	else
		{
		hhTerm->cx = iWidth;
		hhTerm->cy = iHite;

		// Set Min's and Max's now.

		i = hhTerm->iTermHite;	// save old height for bottom line alignment
		hhTerm->iTermHite = hhTerm->cy / hhTerm->yChar;

		// If bezel is drawn, make sure we have room

		j = 0;

		if (hhTerm->xBezel)
			{
			if ((hhTerm->cy % hhTerm->yChar) < (hhTerm->xBezel + 1))
				j = 1;
			}

		hhTerm->iVScrlMin = min(-hhTerm->iBkLines,
			hhTerm->iRows - hhTerm->iTermHite + 1 + j);

		// Little hack here to make sure that if we were at the bottom
		// we show the bottom.

		k = (hhTerm->iVScrlMax == hhTerm->iVScrlPos);

		hhTerm->iVScrlMax = max(hhTerm->iVScrlMin, hhTerm->iRows + 1 + j
								- hhTerm->iTermHite);

		// First time through set to bottom

		if (k)
			hhTerm->iVScrlPos = hhTerm->iVScrlMax;

		else
			hhTerm->iVScrlPos -= hhTerm->iTermHite - i;

		hhTerm->iVScrlPos = max(hhTerm->iVScrlPos, hhTerm->iVScrlMin);
		hhTerm->iVScrlPos = min(hhTerm->iVScrlPos, hhTerm->iVScrlMax);

		// hhTerm->iHScrlMax = #Cols - #Cols Showing
		hhTerm->iHScrlMax = max(0, hhTerm->iCols -
			((hhTerm->cx - hhTerm->xIndent - (2 * hhTerm->xBezel))
				/ hhTerm->xChar));

		hhTerm->iHScrlPos = min(hhTerm->iHScrlPos, hhTerm->iHScrlMax);

		// Check to see if we scrolled entirely into backscroll
		// region.	If so, set fBackscrlLock for this view.  And refill
		// its backscroll buffer (important).

		if ((hhTerm->iVScrlPos + hhTerm->iTermHite) <= 0)
			{
			hhTerm->fBackscrlLock = TRUE;
			termFillBk(hhTerm, hhTerm->iVScrlPos);
			}

		else
			{
			hhTerm->fBackscrlLock = FALSE;
			termFillBk(hhTerm, -hhTerm->iTermHite);
			}

		/* --- Vertical scroll bar --- */

		scrinf.cbSize= sizeof(scrinf);
		scrinf.fMask = SIF_DISABLENOSCROLL | SIF_PAGE | SIF_POS | SIF_RANGE;
		scrinf.nMin  = hhTerm->iVScrlMin;
		scrinf.nMax  = hhTerm->iVScrlMax + hhTerm->iTermHite - 1;
		scrinf.nPos  = hhTerm->iVScrlPos;
		scrinf.nPage = hhTerm->iTermHite;

		SetScrollInfo(hwnd, SB_VERT, &scrinf, TRUE);

		/* --- Horizontal scroll bar --- */

		i = hhTerm->iHScrlMax - hhTerm->iHScrlMin;
		scrinf.cbSize= sizeof(scrinf);
		scrinf.fMask = SIF_PAGE | SIF_POS | SIF_RANGE;
		scrinf.nMin  = hhTerm->iHScrlMin;
		scrinf.nMax  = hhTerm->iHScrlMax + HORZPAGESIZE - 1;
		scrinf.nPos  = hhTerm->iHScrlPos;
		scrinf.nPage = HORZPAGESIZE;

		SetScrollInfo(hwnd, SB_HORZ, &scrinf, TRUE);
		}

	return;
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_SETFOCUS
 *
 * DESCRIPTION:
 *	Handler for WM_SETFOCUS message
 *
 * ARGUMENTS:
 *	hwnd	- terminal window handle.
 *
 * RETURNS:
 *	void
 *
 */
static void TP_WM_SETFOCUS(const HWND hwnd)
	{
	int i;
	const HHTERM hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);

	hhTerm->fFocus = TRUE;

	// Use Multiplexer timer for cursor and blinking text.

	if (!hhTerm->hCursorTimer)
		{
		i = TimerCreate(hhTerm->hSession,
			            &hhTerm->hCursorTimer,
						(long)hhTerm->uBlinkRate,
						CursorTimerProc,
						(void *)hwnd);

		if (i != TIMER_OK)
			assert(FALSE);
		}

	ShowCursors(hhTerm);
	return;
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_KILLFOCUS
 *
 * DESCRIPTION:
 *	Handler for WM_KILLFOCUS message.
 *
 * ARGUMENTS:
 *	hwnd	- terminal window handle.
 *
 * RETURNS:
 *	void
 *
 */
static void TP_WM_KILLFOCUS(const HWND hwnd)
	{
	const HHTERM hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);

	hhTerm->fFocus = FALSE;

	if (hhTerm->hCursorTimer)
		{
		TimerDestroy(&hhTerm->hCursorTimer);
		}

	HideCursors(hhTerm);
	return;
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_VSCROLL
 *
 * DESCRIPTION:
 *	Message handler for terminal window's WM_VSCROLL
 *
 * ARGUMENTS:
 *	hwnd		- terminal window handle
 *	nCode		- scrollbar value
 *	nPos		- scrollbox pos
 *	hwndScrl	- window handle of scrollbar
 *
 * RETURNS:
 *	void
 *
 */
static void TP_WM_VSCROLL(HWND hwnd, int nCode, int nPos, HWND hwndScrl)
	{
	int i;
	int iScrlInc;
	RECT rc;
	SCROLLINFO scrinf;
	const HHTERM hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);

	switch (nCode)
		{
		case SB_TOP:
			iScrlInc = -(hhTerm->iVScrlPos - hhTerm->iVScrlMin);
			break;

		case SB_BOTTOM:
			iScrlInc = hhTerm->iVScrlMax - hhTerm->iVScrlPos;
			break;

		case SB_LINEUP:
			iScrlInc = -1;
			break;

		case SB_LINEDOWN:
			iScrlInc = 1;
			break;

		case SB_PAGEUP:
			iScrlInc = min(-1, -hhTerm->iTermHite);
			break;

		case SB_PAGEDOWN:
			iScrlInc = max(1, hhTerm->iTermHite);
			break;

		case SB_THUMBTRACK:
		case SB_THUMBPOSITION:
			iScrlInc = nPos - hhTerm->iVScrlPos;
			break;

		default:
			iScrlInc = 0;
			break;
		}

	if ((iScrlInc = max(-(hhTerm->iVScrlPos - hhTerm->iVScrlMin),
			min(iScrlInc, hhTerm->iVScrlMax - hhTerm->iVScrlPos))) != 0)
		{
		HideCursors(hhTerm);
		hhTerm->iVScrlPos += iScrlInc;

		GetClientRect(hwnd, &rc);
		i = rc.bottom;
		rc.bottom = hhTerm->iTermHite * hhTerm->yChar;

		hhTerm->yBrushOrg = (hhTerm->yBrushOrg +
			(-hhTerm->yChar * iScrlInc)) % 8;

		ScrollWindow(hwnd, 0, -hhTerm->yChar * iScrlInc, 0, &rc);
		scrinf.cbSize = sizeof(scrinf);
		scrinf.fMask = SIF_DISABLENOSCROLL | SIF_POS;
		scrinf.nPos = hhTerm->iVScrlPos;
		SetScrollInfo(hwnd, SB_VERT, &scrinf, TRUE);

		hhTerm->fScrolled = TRUE;

		// Check to see if we scrolled entirely into backscroll
		// region.	If so, set fBackscrlLock for this view.

		if ((hhTerm->iVScrlPos + hhTerm->iTermHite) <= 0)
			{
			if (hhTerm->fBackscrlLock == FALSE)
				termFillBk(hhTerm, hhTerm->iVScrlPos);

			else
				termGetBkLines(hhTerm, iScrlInc, hhTerm->iVScrlPos, BKPOS_THUMBPOS);

			hhTerm->fBackscrlLock = TRUE;
			}

		else
			{
			if (hhTerm->fBackscrlLock == TRUE)
				termFillBk(hhTerm, -hhTerm->iTermHite);

			hhTerm->fBackscrlLock = FALSE;
			}

		// Make two seperate calls to WM_PAINT to optimize screen
		// updates in the case of a negative scroll operation.

		if (iScrlInc < 0)
			UpdateWindow(hwnd);

		// Fill-in fractional part of line at bottom of terminal
		// screen with appropriate color by invalidating that region.

		if (i > rc.bottom)
			{
			rc.top = rc.bottom;
			rc.bottom = i;
			InvalidateRect(hwnd, &rc, FALSE);
			}

		UpdateWindow(hwnd);
		ShowCursors(hhTerm);

		#if 0  // debugging stuff...
			{
			char ach[50];
			wsprintf(ach, "pos=%d min=%d max=%d", hhTerm->iVScrlPos,
				hhTerm->iVScrlMin, hhTerm->iVScrlMax);
			SetWindowText(sessQueryHwndStatusbar(hhTerm->hSession), ach);
			}
		#endif
		}

	return;
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_HSCROLL
 *
 * DESCRIPTION:
 *	Message handler for terminal window's WM_HSCROLL
 *
 * ARGUMENTS:
 *	hwnd		- terminal window handle
 *	nCode		- scrollbar value
 *	nPos		- scrollbox pos
 *	hwndScrl	- window handle of scrollbar
 *
 * RETURNS:
 *	void
 *
 */
static void TP_WM_HSCROLL(HWND hwnd, int nCode, int nPos, HWND hwndScrl)
	{
	int i, j, k;
	int iScrlInc;
	RECT rc;
	const HHTERM hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);

	switch (nCode)
		{
		case SB_LINEUP:
			iScrlInc = -1;
			break;

		case SB_LINEDOWN:
			iScrlInc = 1;
			break;

		case SB_PAGEUP:
			iScrlInc = -HORZPAGESIZE;
			break;

		case SB_PAGEDOWN:
			iScrlInc = HORZPAGESIZE;
			break;

		case SB_THUMBTRACK:
		case SB_THUMBPOSITION:
			iScrlInc = nPos - hhTerm->iHScrlPos;
			break;

		default:
			iScrlInc = 0;
			break;
		}

	if ((iScrlInc = max(-hhTerm->iHScrlPos,
			min(iScrlInc, hhTerm->iHScrlMax - hhTerm->iHScrlPos))) != 0)
		{
		HideCursors(hhTerm);
		i = -hhTerm->xChar * iScrlInc;
		j = 0;

		hhTerm->iHScrlPos += iScrlInc;
		GetClientRect(hwnd, &rc);
		rc.left += hhTerm->xIndent;

		// We have to adjust for the bezel when it is visible
		if (hhTerm->xBezel &&
				(hhTerm->iHScrlPos == 0 ||
				(hhTerm->iHScrlPos - iScrlInc) == 0)   ||
				 hhTerm->iHScrlPos == hhTerm->iHScrlMax ||
				(hhTerm->iHScrlPos - iScrlInc == hhTerm->iHScrlMax))
			{
			k = hhTerm->xBezel - hhTerm->xChar;
			i += (iScrlInc > 0) ? -k : k;
			j = 1;	// set for test below
			}

		ScrollWindow(hwnd, i, 0, 0, &rc);
		SetScrollPos(hwnd, SB_HORZ, hhTerm->iHScrlPos, TRUE);


#if defined(FAR_EAST)
	InvalidateRect(hwnd, NULL, FALSE);
#endif

		hhTerm->fScrolled = TRUE;

		if (j == 1)
			{
			GetUpdateRect(hwnd, &rc, FALSE);
			rc.left = 0;	// makes sure bezel is drawn.
			InvalidateRect(hwnd, &rc, FALSE);
			}

		UpdateWindow(hwnd);
		ShowCursors(hhTerm);
		}

	return;
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_CHAR
 *
 * DESCRIPTION:
 *	Processes the WM_CHAR and WM_KEYDOWN messages for termproc.
 *
 * ARGUMENTS:
 *	hwnd	- terminal window handle
 *	message - WM_CHAR or WM_KEYDOWN
 *	wPar	- wParam
 *	lPar	- lParam
 *
 * RETURNS:
 *	void
 *
 */
static void TP_WM_CHAR(const HWND hwnd, const UINT message,
					   const WPARAM wPar, const LPARAM lPar)
	{
	MSG msg;
	KEY_T Key;
	const HHTERM hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);

#if 0
    //
    // Removed this which caused problems with the OnScreen Keyboard (OSK)
    // in Whistler. REV: 01/12/2001
    //
    if (GetKeyState(VK_LBUTTON) < 0)
		return;
#endif

    //DbgOutStr("TP_WM_CHAR 0x%x 0x%x 0x%lx\r\n", message, wPar, lPar, 0,0);

	msg.hwnd	= hwnd;
	msg.message = message;
	msg.wParam	= wPar;
	msg.lParam	= lPar;

	Key = TranslateToKey(&msg);

	if (!termTranslateKey(hhTerm, hwnd, Key))
		{
		CLoopSend(sessQueryCLoopHdl(hhTerm->hSession), &Key, 1, CLOOP_KEYS);
		LinkCursors(hhTerm);
		}

	return;
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_IME_CHAR
 *
 * DESCRIPTION:
 *	Processes the WM_IME_CHAR message for FE version of WACKER
 *
 * ARGUMENTS:
 *	hwnd	- terminal window handle
 *	message - WM_IME_CHAR
 *	wPar	- wParam
 *	lPar	- lParam
 *
 * RETURNS:
 *	void
 *
 */
static void TP_WM_IME_CHAR(const HWND hwnd, const UINT message,
							const WPARAM wPar, const LPARAM lPar)
	{
	KEY_T ktCode1;
	KEY_T ktCode2;
	const HHTERM hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);

    //DbgOutStr("TP_WM_IME_CHAR 0x%x 0x%x 0x%lx\r\n", message, wPar, lPar, 0,0);

	/*
	 * Later on, we may decide to create or modify something like the stuff
	 * that goes on in TP_WM_CHAR, but until we get a better understanding of
	 * how to process this stuff, just do it right here, in line, in all of
	 * its ugly experimental foolishness.
	 */
	ktCode1 = (KEY_T)(wPar & 0xFF);		    /* Lower eight bits */
	ktCode2 = (KEY_T)((wPar >> 8) & 0xFF);	/* Upper eight bits */

	/*
	 * The documentation says that the lower eight bits are the first char,
	 * but I am not too sure about that.  It looks like the upper eight bits
	 * is the lead byte and the lower eight bits is not.  Keep an eye on this.
	 */

	//mpt:2-7-98 apparently, the korean ime can send us single byte characters
	//           with 'null' as the other character, for some reason most host
	//           systems don't like it when we send that null out the port.
	if (ktCode2 != 0)
		CLoopSend(sessQueryCLoopHdl(hhTerm->hSession), &ktCode2, 1, CLOOP_KEYS);

	if (ktCode1 != 0)
		CLoopSend(sessQueryCLoopHdl(hhTerm->hSession), &ktCode1, 1, CLOOP_KEYS);

	return;
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_TERM_KEY
 *
 * DESCRIPTION:
 *	Term keys are keys we know are going to be translated by the
 *	session macro or emulator sequence
 *
 * ARGUMENTS:
 *
 * RETURNS:
 *
 */
static void TP_WM_TERM_KEY(const HWND hwnd, KEY_T Key)
	{
	// Until we have a real macro key expander...
	const HHTERM hhTerm = (HHTERM)GetWindowLongPtr(hwnd, GWLP_USERDATA);

	if (GetKeyState(VK_LBUTTON) < 0)
		return;

	if ( kabExpandMacroKey(hhTerm->hSession, Key) == 0)
        {
		CLoopSend(sessQueryCLoopHdl(hhTerm->hSession), &Key, 1, CLOOP_KEYS);
        }

	LinkCursors(hhTerm);
	return;
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_TERM_TRACK
 *
 * DESCRIPTION:
 *	Causes terminal to track to the cursor position.  If wPar is
 *	0, then we track only if we are not backscroll-locked and not
 *	Mark-locked.  If wPar is not 0, then we force tracking,
 *	unmarking and unlocking the backscroll if necessary
 *
 * ARGUMENTS:
 *	hhTerm	- private term handle
 *	fForce	- force tracking no matter what.
 *
 * RETURNS:
 *	void
 *
 */
static void TP_WM_TERM_TRACK(const HHTERM hhTerm, const int fForce)
	{
	int i, j;

	if ((hhTerm->fCursorTracking == 0 || hhTerm->fBackscrlLock != 0)
			&& fForce == 0)
		{
		return;
		}

	j = 0;

	// First track vertically

	if (hhTerm->ptHstCur.y < hhTerm->iVScrlPos)
		i = hhTerm->ptHstCur.y;

	else if ((hhTerm->ptHstCur.y - hhTerm->iTermHite + 2) > hhTerm->iVScrlPos)
		i = hhTerm->ptHstCur.y - hhTerm->iTermHite + 2;

	else
		i = hhTerm->iVScrlPos;

	if (i != hhTerm->iVScrlPos)
		{
		// If we have enough room to display the entire terminal
		// then go go to iVScrlMax

		if (hhTerm->iTermHite > hhTerm->iRows)
			i = hhTerm->iVScrlMax;

		SendMessage(hhTerm->hwnd, WM_VSCROLL, MAKEWPARAM(SB_THUMBPOSITION, i), 0);
		j = 1;
		}

	// Now check for horizontal placement and adjust to make cursor
	// visible.

	if (hhTerm->ptHstCur.x < hhTerm->iHScrlPos)
		{
		i = hhTerm->ptHstCur.x;
		}

	else if (hhTerm->ptHstCur.x >= hhTerm->iHScrlPos +
							hhTerm->iCols - hhTerm->iHScrlMax)
		{
		i = hhTerm->ptHstCur.x - (hhTerm->iCols - hhTerm->iHScrlMax) + 5;
		}

	else
		{
		i = hhTerm->iHScrlPos;
		}

	if (i != hhTerm->iHScrlPos)
		{
		SendMessage(hhTerm->hwnd, WM_HSCROLL, MAKEWPARAM(SB_THUMBPOSITION, i), 0);
		j = 1;
		}

	if (j)
		LinkCursors(hhTerm);

	return;
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_EMU_SETTINGS
 *
 * DESCRIPTION:
 *	Something important in the emulator has changed (like loading a new
 *	emulator or changing the number of rows or columns).
 *
 * ARGUMENTS:
 *	hhTerm	- private terminal handle.
 *
 * RETURNS:
 *	void
 *
 */
static void TP_WM_EMU_SETTINGS(const HHTERM hhTerm)
	{
	int iRows, iCols;
	BOOL fChange = FALSE;
	int iCurType;
	STEMUSET stEmuUserSettings;

	const HEMU hEmu = sessQueryEmuHdl(hhTerm->hSession);

	/* --- Check rows and columns --- */

	emuQueryRowsCols(hEmu, &iRows, &iCols);

	if (iRows != hhTerm->iRows || iCols != hhTerm->iCols)
		{
		hhTerm->iRows = iRows;
		hhTerm->iCols = iCols;
		fChange = TRUE;
		}

	/* --- Query other emulator settings --- */

	iCurType = emuQueryCursorType(hEmu);

	emuQuerySettings(hEmu, &stEmuUserSettings);
	hhTerm->fBlink = stEmuUserSettings.fCursorBlink;

	/* --- Check cursor type --- */

	if (iCurType != hhTerm->iCurType)
		{
		fChange = TRUE;
		hhTerm->iCurType = iCurType;

		switch (hhTerm->iCurType)
			{
		case EMU_CURSOR_LINE:
		default:
			hhTerm->iHstCurSiz = GetSystemMetrics(SM_CYBORDER) * 2;
			break;

		case EMU_CURSOR_BLOCK:
			hhTerm->iHstCurSiz = hhTerm->yChar;
			break;

		case EMU_CURSOR_NONE:
			hhTerm->iHstCurSiz = 0;
			break;
			}
		}

	if (fChange)
		RefreshTermWindow(hhTerm->hwnd);
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_TERM_LOAD_SETTINGS
 *
 * DESCRIPTION:
 *	Loads terminal settings from session file.
 *
 * ARGUMENTS:
 *	hhTerm	- private terminal handle
 *
 * RETURNS:
 *	0=OK
 *
 */
static int TP_WM_TERM_LOAD_SETTINGS(const HHTERM hhTerm)
	{
	LONG lSize;

	if (hhTerm == 0)
		{
		assert(FALSE);
		return 1;
		}

	lSize = sizeof(hhTerm->lfSys);

	if (sfGetSessionItem(sessQuerySysFileHdl(hhTerm->hSession),
			SFID_TERM_LOGFONT, &lSize, &hhTerm->lfSys) == 0)
		{
		termSetFont(hhTerm, &hhTerm->lfSys);
		RefreshTermWindow(hhTerm->hwnd);
		}

	return 0;
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_TERM_SAVE_SETTINGS
 *
 * DESCRIPTION:
 *	Saves terminal settings to session file.
 *
 * ARGUMENTS:
 *	hhTerm	- private terminal handle
 *
 * RETURNS:
 *	0=OK
 *
 */
static int TP_WM_TERM_SAVE_SETTINGS(const HHTERM hhTerm)
	{
	if (hhTerm == 0)
		{
		assert(FALSE);
		return 1;
		}

	if (memcmp(&hhTerm->lf, &hhTerm->lfSys, sizeof(hhTerm->lf)))
		{
		sfPutSessionItem(sessQuerySysFileHdl(hhTerm->hSession),
			SFID_TERM_LOGFONT, sizeof(hhTerm->lf), &hhTerm->lf);
		}

	return 0;
	}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 * FUNCTION:
 *	TP_WM_TERM_FORCE_WMSIZE
 *
 * DESCRIPTION:
 *	Forces the terminal through its resize code to get things properly
 *	updated.  Used only when session is first initialized.
 *
 * ARGUMENTS:
 *	hhTerm	- private terminal handle.
 *
 * RETURNS:
 *	void
 *
 */
static void TP_WM_TERM_FORCE_WMSIZE(const HHTERM hhTerm)
	{
	RECT rc;

	if (!IsWindow(hhTerm->hwnd))
		return;

	hhTerm->iVScrlPos = hhTerm->iVScrlMax;
	hhTerm->iHScrlPos = 0;

	GetClientRect(hhTerm->hwnd, &rc);
	termGetUpdate(hhTerm, FALSE);
	TP_WM_SIZE(hhTerm->hwnd, 0, rc.right, rc.bottom);
	InvalidateRect(hhTerm->hwnd, 0, FALSE);
	return;
	}

//******************************************************************************
// Method:
//    kabExpandMacroKey
//
// Description:
//    Determines if the key is a macro key and if so expands the macro and send
//    the keys to the CLOOP
//
// Arguments:
//    hSession - Session handle
//    aKey     - The key to be expanded
//
// Returns:
//    non zero - if the key has been expanded, zero if the key is not a macro
//
// Throws:
//    None
//
// Author: Dwayne M. Newsome, 06/10/1998
//
//

static int kabExpandMacroKey( const HSESSION hSession, KEY_T aKey )
    {
    int lReturn = 0;

#if defined INCL_KEY_MACROS
    keyMacro lKeyMacro;
    int lKeyIndex = -1;
    int lIndex    = 0;

    lKeyMacro.keyName = aKey;
    lKeyIndex = keysFindMacro( &lKeyMacro );

    if ( lKeyIndex >= 0 )
        {
        keysGetMacro( lKeyIndex, &lKeyMacro );

		//
		// Replace the virtual return key with '\r' so that all the
		// line end processing works correctly. REV: 5/16/2002
		//
		for ( lIndex = 0; lIndex < lKeyMacro.macroLen; lIndex++ )
			{
			if ((VK_RETURN | VIRTUAL_KEY) == lKeyMacro.keyMacro[lIndex])
				{
				lKeyMacro.keyMacro[lIndex] = TEXT('\r');
				}
			}

        CLoopSend( sessQueryCLoopHdl(hSession), &lKeyMacro.keyMacro,
                   lKeyMacro.macroLen, CLOOP_KEYS );

        lReturn = 1;
        }
#endif

    return lReturn;
    }