/* FCE Ultra - NES/Famicom Emulator
 *
 * Copyright notice for this file:
 *  Copyright (C) 2020 mjbudd77
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
//
// RamSearch.cpp
//
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <ctype.h>
#include <string>

#include <SDL.h>
#include <QMenu>
#include <QMenuBar>
#include <QAction>
#include <QActionGroup>
#include <QHeaderView>
#include <QCloseEvent>
#include <QGroupBox>
#include <QLineEdit>
#include <QRadioButton>
#include <QFileDialog>
#include <QValidator>
#include <QPainter>
#include <QSettings>

#include "../../types.h"
#include "../../fceu.h"
#include "../../cheat.h"
#include "../../debug.h"
#include "../../movie.h"

#include "Qt/main.h"
#include "Qt/dface.h"
#include "Qt/input.h"
#include "Qt/config.h"
#include "Qt/keyscan.h"
#include "Qt/fceuWrapper.h"
#include "Qt/RamWatch.h"
#include "Qt/RamSearch.h"
#include "Qt/HexEditor.h"
#include "Qt/CheatsConf.h"
#include "Qt/ConsoleWindow.h"
#include "Qt/ConsoleUtilities.h"

static bool ShowRAM  = true;
static bool ShowSRAM = false;
static bool ShowROM  = false;
static RamSearchDialog_t *ramSearchWin = NULL;

struct memoryState_t
{
	union
	{
		int8_t i;
		uint8_t u;
	} v8;
	union
	{
		int16_t i;
		uint16_t u;
	} v16;
	union
	{
		int32_t i;
		uint32_t u;
	} v32;
};

struct memoryLocation_t
{
	int addr;

	memoryState_t val;

	std::vector<memoryState_t> hist;

	uint32_t chgCount;
	uint64_t elimMask;

	memoryLocation_t(void)
	{
		addr = 0;
		val.v32.u = 0;
		chgCount = 0;
		elimMask = 0;
	}
};
static struct memoryLocation_t memLoc[0x10000];
static uint8_t lclMemBuf[0x10000];

static std::list<struct memoryLocation_t *> actvSrchList;
static std::list<struct memoryLocation_t *> deactvSrchList;
static std::vector<int> deactvFrameStack;

static int cmpOp = '=';
static int dpySize = 'b';
static int dpyType = 's';
static bool chkMisAligned = false;

class ramSearchInputValidator : public QValidator
{
public:
	ramSearchInputValidator(QObject *parent)
		: QValidator(parent)
	{
	}

	QValidator::State validate(QString &input, int &pos) const
	{
		int i;
		//printf("Validate: %i '%s'\n", input.size(), input.toStdString().c_str() );

		if (input.size() == 0)
		{
			return QValidator::Acceptable;
		}
		std::string s = input.toStdString();
		i = 0;

		if ((s[i] == '-') || (s[i] == '+'))
		{
			i++;
		}
		if (s[i] == 0)
		{
			return QValidator::Acceptable;
		}

		if ((s[i] == '$') || ((s[i] == '0') && (tolower(s[i + 1]) == 'x')))
		{
			if (s[i] == '$')
			{
				i++;
			}
			else
			{
				i += 2;
			}

			if (s[i] == 0)
			{
				return QValidator::Acceptable;
			}

			if (!isxdigit(s[i]))
			{
				return QValidator::Invalid;
			}
			while (isxdigit(s[i]))
				i++;

			if (s[i] == 0)
			{
				return QValidator::Acceptable;
			}
		}
		else if (isdigit(s[i]))
		{
			while (isdigit(s[i]))
				i++;

			if (s[i] == 0)
			{
				return QValidator::Acceptable;
			}
		}
		return QValidator::Invalid;
	}
};

//----------------------------------------------------------------------------
void openRamSearchWindow(QWidget *parent)
{
	if (ramSearchWin != NULL)
	{
		return;
	}
	ramSearchWin = new RamSearchDialog_t(parent);

	ramSearchWin->show();
}

//----------------------------------------------------------------------------
RamSearchDialog_t::RamSearchDialog_t(QWidget *parent)
	: QDialog(parent, Qt::Window)
{
	QVBoxLayout *mainLayout;
	QHBoxLayout *hbox, *hbox1, *hbox2, *hbox3;
	QVBoxLayout *vbox, *vbox1, *vbox2, *vbox3;
	QGridLayout *grid;
	QGroupBox *frame;
	ramSearchInputValidator *inpValidator;
	QMenuBar *menuBar;
	QMenu *fileMenu;
	QAction *act;
	int useNativeMenuBar;
	QSettings settings;

	setWindowTitle("RAM Search");

	menuBar = new QMenuBar(this);

	// This is needed for menu bar to show up on MacOS
	g_config->getOption( "SDL.UseNativeMenuBar", &useNativeMenuBar );

	menuBar->setNativeMenuBar( useNativeMenuBar ? true : false );

	//-----------------------------------------------------------------------
	// Menu Start
	//-----------------------------------------------------------------------
	// File
	fileMenu = menuBar->addMenu(tr("&File"));

	// File -> Close
	act = new QAction(tr("&Close"), this);
	act->setShortcut(QKeySequence::Close);
	act->setStatusTip(tr("Close Window"));
	connect(act, SIGNAL(triggered()), this, SLOT(closeWindow(void)) );
	
	fileMenu->addAction(act);

	//-----------------------------------------------------------------------
	// Menu End
	//-----------------------------------------------------------------------

	resize(512, 512);

	mainLayout = new QVBoxLayout();
	hbox1 = new QHBoxLayout();

	mainLayout->setMenuBar( menuBar );
	mainLayout->addLayout(hbox1, 100);

	grid = new QGridLayout();
	ramView = new QRamSearchView(this);
	vbar = new QScrollBar(Qt::Vertical, this);
	hbar = new QScrollBar(Qt::Horizontal, this);
	grid->addWidget(ramView, 0, 0);
	grid->addWidget(vbar, 0, 1);
	grid->addWidget(hbar, 1, 0);

	connect(hbar, SIGNAL(valueChanged(int)), this, SLOT(hbarChanged(int)));
	connect(vbar, SIGNAL(valueChanged(int)), this, SLOT(vbarChanged(int)));

	ramView->setScrollBars(hbar, vbar);
	hbar->setMinimum(0);
	hbar->setMaximum(100);
	vbar->setMinimum(0);
	vbar->setMaximum(ShowROM ? 0x10000 : 0x8000);
	vbar->setValue(0);

	vbox = new QVBoxLayout();
	hbox1->addLayout(grid, 100);
	hbox1->addLayout(vbox, 1);

	searchButton = new QPushButton(tr("Search"));
	vbox->addWidget(searchButton);
	connect(searchButton, SIGNAL(clicked(void)), this, SLOT(runSearch(void)));

	resetButton = new QPushButton(tr("Reset"));
	vbox->addWidget(resetButton);
	connect(resetButton, SIGNAL(clicked(void)), this, SLOT(resetSearch(void)));

	clearChangeButton = new QPushButton(tr("Clear Change"));
	vbox->addWidget(clearChangeButton);
	connect(clearChangeButton, SIGNAL(clicked(void)), this, SLOT(clearChangeCounts(void)));

	undoButton = new QPushButton(tr("Undo"));
	vbox->addWidget(undoButton);
	connect(undoButton, SIGNAL(clicked(void)), this, SLOT(undoSearch(void)));
	undoButton->setEnabled(false);

	frame = new QGroupBox( tr("Search Regions") );
	vbox3 = new QVBoxLayout();
	frame->setLayout(vbox3);
	vbox->addWidget(frame);

	searchRAMCbox = new QCheckBox(tr("RAM"));
	vbox3->addWidget(searchRAMCbox);
	searchRAMCbox->setChecked(ShowRAM);
	searchRAMCbox->setToolTip( tr("Search RAM Address Range: 0x0000 - 0x07FF") );
	connect(searchRAMCbox, SIGNAL(stateChanged(int)), this, SLOT(searchRAMChanged(int)));

	searchSRAMCbox = new QCheckBox(tr("SRAM"));
	vbox3->addWidget(searchSRAMCbox);
	searchSRAMCbox->setChecked(ShowSRAM);
	searchSRAMCbox->setToolTip( tr("Search SRAM Address Range: 0x6000 - 0x7FFF") );
	connect(searchSRAMCbox, SIGNAL(stateChanged(int)), this, SLOT(searchSRAMChanged(int)));

	searchROMCbox = new QCheckBox(tr("ROM"));
	vbox3->addWidget(searchROMCbox);
	searchROMCbox->setChecked(ShowROM);
	searchROMCbox->setToolTip( tr("Search ROM Address Range: 0x8000 - 0xFFFF") );
	connect(searchROMCbox, SIGNAL(stateChanged(int)), this, SLOT(searchROMChanged(int)));

	elimButton = new QPushButton(tr("Eliminate"));
	vbox->addWidget(elimButton);
	connect(elimButton, SIGNAL(clicked(void)), this, SLOT(eliminateSelAddr(void)));
	elimButton->setEnabled(false);

	watchButton = new QPushButton(tr("Watch"));
	vbox->addWidget(watchButton);
	connect(watchButton, SIGNAL(clicked(void)), this, SLOT(addRamWatchClicked(void)));
	watchButton->setEnabled(false);

	addCheatButton = new QPushButton(tr("Add Cheat"));
	vbox->addWidget(addCheatButton);
	connect(addCheatButton, SIGNAL(clicked(void)), this, SLOT(addCheatClicked(void)));
	addCheatButton->setEnabled(false);

	hexEditButton = new QPushButton(tr("Hex Editor"));
	vbox->addWidget(hexEditButton);
	connect(hexEditButton, SIGNAL(clicked(void)), this, SLOT(hexEditSelAddr(void)));
	hexEditButton->setEnabled(false);

	hbox2 = new QHBoxLayout();
	mainLayout->addLayout(hbox2, 1);
	frame = new QGroupBox(tr("Comparison Operator"));
	vbox = new QVBoxLayout();

	hbox2->addWidget(frame);
	frame->setLayout(vbox);

	lt_btn = new QRadioButton(tr("Less Than"));
	gt_btn = new QRadioButton(tr("Greater Than"));
	le_btn = new QRadioButton(tr("Less Than or Equal To"));
	ge_btn = new QRadioButton(tr("Greater Than or Equal To"));
	eq_btn = new QRadioButton(tr("Equal To"));
	ne_btn = new QRadioButton(tr("Not Equal To"));
	df_btn = new QRadioButton(tr("Different By:"));
	md_btn = new QRadioButton(tr("Modulo"));

	lt_btn->setChecked(cmpOp == '<');
	gt_btn->setChecked(cmpOp == '>');
	le_btn->setChecked(cmpOp == 'l');
	ge_btn->setChecked(cmpOp == 'm');
	eq_btn->setChecked(cmpOp == '=');
	ne_btn->setChecked(cmpOp == '!');
	df_btn->setChecked(cmpOp == 'd');
	md_btn->setChecked(cmpOp == '%');

	connect(lt_btn, SIGNAL(clicked(void)), this, SLOT(opLtClicked(void)));
	connect(gt_btn, SIGNAL(clicked(void)), this, SLOT(opGtClicked(void)));
	connect(le_btn, SIGNAL(clicked(void)), this, SLOT(opLeClicked(void)));
	connect(ge_btn, SIGNAL(clicked(void)), this, SLOT(opGeClicked(void)));
	connect(eq_btn, SIGNAL(clicked(void)), this, SLOT(opEqClicked(void)));
	connect(ne_btn, SIGNAL(clicked(void)), this, SLOT(opNeClicked(void)));
	connect(df_btn, SIGNAL(clicked(void)), this, SLOT(opDfClicked(void)));
	connect(md_btn, SIGNAL(clicked(void)), this, SLOT(opMdClicked(void)));

	diffByEdit = new QLineEdit();
	moduloEdit = new QLineEdit();

	diffByEdit->setEnabled(cmpOp == 'd');
	moduloEdit->setEnabled(cmpOp == '%');

	inpValidator = new ramSearchInputValidator(this);
	diffByEdit->setMaxLength(16);
	diffByEdit->setCursorPosition(0);
	diffByEdit->setValidator(inpValidator);

	moduloEdit->setMaxLength(16);
	moduloEdit->setCursorPosition(0);
	moduloEdit->setValidator(inpValidator);

	vbox->addWidget(lt_btn);
	vbox->addWidget(gt_btn);
	vbox->addWidget(le_btn);
	vbox->addWidget(ge_btn);
	vbox->addWidget(eq_btn);
	vbox->addWidget(ne_btn);

	hbox = new QHBoxLayout();
	vbox->addLayout(hbox);
	hbox->addWidget(df_btn);
	hbox->addWidget(diffByEdit);

	hbox = new QHBoxLayout();
	vbox->addLayout(hbox);
	hbox->addWidget(md_btn);
	hbox->addWidget(moduloEdit);

	vbox1 = new QVBoxLayout();
	grid = new QGridLayout();
	hbox2->addLayout(vbox1);
	frame = new QGroupBox(tr("Compare To/By"));
	frame->setLayout(grid);
	vbox1->addWidget(frame);

	pv_btn = new QRadioButton(tr("Previous Value"));
	sv_btn = new QRadioButton(tr("Specific Value:"));
	sa_btn = new QRadioButton(tr("Specific Address:"));
	nc_btn = new QRadioButton(tr("Number of Changes:"));

	pv_btn->setChecked(true);

	connect(pv_btn, SIGNAL(clicked(void)), this, SLOT(pvBtnClicked(void)));
	connect(sv_btn, SIGNAL(clicked(void)), this, SLOT(svBtnClicked(void)));
	connect(sa_btn, SIGNAL(clicked(void)), this, SLOT(saBtnClicked(void)));
	connect(nc_btn, SIGNAL(clicked(void)), this, SLOT(ncBtnClicked(void)));

	specValEdit = new QLineEdit();
	specAddrEdit = new QLineEdit();
	numChangeEdit = new QLineEdit();

	specValEdit->setValidator(inpValidator);
	specAddrEdit->setValidator(inpValidator);
	numChangeEdit->setValidator(inpValidator);

	specValEdit->setEnabled(false);
	specAddrEdit->setEnabled(false);
	numChangeEdit->setEnabled(false);

	grid->addWidget(pv_btn, 0, 0, Qt::AlignLeft);
	grid->addWidget(sv_btn, 1, 0, Qt::AlignLeft);
	grid->addWidget(specValEdit, 1, 1, Qt::AlignLeft);
	grid->addWidget(sa_btn, 2, 0, Qt::AlignLeft);
	grid->addWidget(specAddrEdit, 2, 1, Qt::AlignLeft);
	grid->addWidget(nc_btn, 3, 0, Qt::AlignLeft);
	grid->addWidget(numChangeEdit, 3, 1, Qt::AlignLeft);

	vbox = new QVBoxLayout();
	hbox3 = new QHBoxLayout();
	frame = new QGroupBox(tr("Data Size"));
	frame->setLayout(vbox);
	vbox1->addLayout(hbox3);
	hbox3->addWidget(frame);

	ds1_btn = new QRadioButton(tr("1 Byte"));
	ds2_btn = new QRadioButton(tr("2 Byte"));
	ds4_btn = new QRadioButton(tr("4 Byte"));
	misalignedCbox = new QCheckBox(tr("Check Misaligned"));
	misalignedCbox->setEnabled(dpySize != 'b');
	misalignedCbox->setChecked(chkMisAligned);
	connect(misalignedCbox, SIGNAL(stateChanged(int)), this, SLOT(misalignedChanged(int)));

	ds1_btn->setChecked(dpySize == 'b');
	ds2_btn->setChecked(dpySize == 'w');
	ds4_btn->setChecked(dpySize == 'd');

	connect(ds1_btn, SIGNAL(clicked(void)), this, SLOT(ds1Clicked(void)));
	connect(ds2_btn, SIGNAL(clicked(void)), this, SLOT(ds2Clicked(void)));
	connect(ds4_btn, SIGNAL(clicked(void)), this, SLOT(ds4Clicked(void)));

	vbox->addWidget(ds1_btn);
	vbox->addWidget(ds2_btn);
	vbox->addWidget(ds4_btn);
	vbox->addWidget(misalignedCbox);

	vbox = new QVBoxLayout();
	vbox2 = new QVBoxLayout();
	frame = new QGroupBox(tr("Data Type / Display"));
	frame->setLayout(vbox);
	vbox2->addWidget(frame);
	hbox3->addLayout(vbox2);

	signed_btn = new QRadioButton(tr("Signed"));
	unsigned_btn = new QRadioButton(tr("Unsigned"));
	hex_btn = new QRadioButton(tr("Hexadecimal"));

	vbox->addWidget(signed_btn);
	vbox->addWidget(unsigned_btn);
	vbox->addWidget(hex_btn);

	signed_btn->setChecked(dpyType == 's');
	unsigned_btn->setChecked(dpyType == 'u');
	hex_btn->setChecked(dpyType == 'h');

	connect(signed_btn, SIGNAL(clicked(void)), this, SLOT(signedTypeClicked(void)));
	connect(unsigned_btn, SIGNAL(clicked(void)), this, SLOT(unsignedTypeClicked(void)));
	connect(hex_btn, SIGNAL(clicked(void)), this, SLOT(hexTypeClicked(void)));

	autoSearchCbox = new QCheckBox(tr("Auto-Search"));
	autoSearchCbox->setEnabled(true);
	vbox2->addWidget(autoSearchCbox);

	setLayout(mainLayout);

	cycleCounter = 0;
	frameCounterLastPass = currFrameCounter;

	resetSearch();

	updateTimer = new QTimer(this);

	connect(updateTimer, &QTimer::timeout, this, &RamSearchDialog_t::periodicUpdate);

	updateTimer->start(8); // ~120hz

	restoreGeometry(settings.value("ramSearchWindow/geometry").toByteArray());
}
//----------------------------------------------------------------------------
RamSearchDialog_t::~RamSearchDialog_t(void)
{
	QSettings settings;

	updateTimer->stop();
	//printf("Destroy RAM Search Window\n");
	ramSearchWin = NULL;

	actvSrchList.clear();
	deactvSrchList.clear();
	deactvFrameStack.clear();

	for (unsigned int addr = 0; addr < 0x08000; addr++)
	{
		memLoc[addr].hist.clear();
	}
	settings.setValue("ramSearchWindow/geometry", saveGeometry());
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::closeEvent(QCloseEvent *event)
{
	//printf("RAM Search Close Window Event\n");
	done(0);
	deleteLater();
	event->accept();
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::closeWindow(void)
{
	//printf("Close Window\n");
	done(0);
	deleteLater();
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::periodicUpdate(void)
{
	int selAddr = -1;

	if (currFrameCounter != frameCounterLastPass)
	{
		FCEU_WRAPPER_LOCK();
		copyRamToLocalBuffer();
		FCEU_WRAPPER_UNLOCK();

		//if ( currFrameCounter != (frameCounterLastPass+1) )
		//{
		//   printf("Warning: Ram Search Missed Frame: %i \n", currFrameCounter );
		//}
		updateRamValues();

		if (autoSearchCbox->isChecked())
		{
			runSearch();
		}
		frameCounterLastPass = currFrameCounter;
	}

	if ((cycleCounter % 10) == 0)
	{
		undoButton->setEnabled(deactvFrameStack.size() > 0);

		selAddr = ramView->getSelAddr();

		if (selAddr >= 0)
		{
			elimButton->setEnabled(true);
			watchButton->setEnabled(true);
			addCheatButton->setEnabled(true);
			hexEditButton->setEnabled(true);
		}
		else
		{
			elimButton->setEnabled(false);
			watchButton->setEnabled(false);
			addCheatButton->setEnabled(false);
			hexEditButton->setEnabled(false);
		}

		ramView->update();
	}
	cycleCounter++;
}
//----------------------------------------------------
void RamSearchDialog_t::hbarChanged(int val)
{
	ramView->update();
}
//----------------------------------------------------
void RamSearchDialog_t::vbarChanged(int val)
{
	ramView->update();
}
//----------------------------------------------------
void RamSearchDialog_t::searchRAMChanged(int state)
{
	ShowRAM = (state != Qt::Unchecked);
}
//----------------------------------------------------
void RamSearchDialog_t::searchSRAMChanged(int state)
{
	ShowSRAM = (state != Qt::Unchecked);
}
//----------------------------------------------------
void RamSearchDialog_t::searchROMChanged(int state)
{
	ShowROM = (state != Qt::Unchecked);
}
//----------------------------------------------------
void RamSearchDialog_t::misalignedChanged(int state)
{
	chkMisAligned = (state != Qt::Unchecked);

	calcRamList();
}
//----------------------------------------------------------------------------
static bool memoryAddrCompare(memoryLocation_t *loc1, memoryLocation_t *loc2)
{
	return loc1->addr < loc2->addr;
}
static void sortActvMemList(void)
{
	actvSrchList.sort(memoryAddrCompare);
}

// basic comparison functions:
static bool LessCmp(int64_t x, int64_t y, int64_t i) { return x < y; }
static bool MoreCmp(int64_t x, int64_t y, int64_t i) { return x > y; }
static bool LessEqualCmp(int64_t x, int64_t y, int64_t i) { return x <= y; }
static bool MoreEqualCmp(int64_t x, int64_t y, int64_t i) { return x >= y; }
static bool EqualCmp(int64_t x, int64_t y, int64_t i) { return x == y; }
static bool UnequalCmp(int64_t x, int64_t y, int64_t i) { return x != y; }
static bool DiffByCmp(int64_t x, int64_t y, int64_t p) { return x - y == p || y - x == p; }
static bool ModIsCmp(int64_t x, int64_t y, int64_t p) { return p && x % p == y; }

static int64_t getLineEditValue(QLineEdit *edit, bool forceHex = false)
{
	int64_t val = 0;
	std::string s;

	s = edit->text().toStdString();

	if (s.size() > 0)
	{
		val = strtoll(s.c_str(), NULL, forceHex ? 16 : 0);
	}
	return val;
}

//----------------------------------------------------------------------------
void RamSearchDialog_t::SearchRelative(void)
{
	int elimCount = 0;
	std::list<struct memoryLocation_t *>::iterator it;
	memoryLocation_t *loc = NULL;
	int64_t x = 0, y = 0, p = 0;
	bool (*cmpFun)(int64_t x, int64_t y, int64_t p) = NULL;
	bool storeHistory = !autoSearchCbox->isChecked();

	switch (cmpOp)
	{
	case '<':
		cmpFun = LessCmp;
		break;
	case '>':
		cmpFun = MoreCmp;
		break;
	case '=':
		cmpFun = EqualCmp;
		break;
	case '!':
		cmpFun = UnequalCmp;
		break;
	case 'l':
		cmpFun = LessEqualCmp;
		break;
	case 'm':
		cmpFun = MoreEqualCmp;
		break;
	case 'd':
		cmpFun = DiffByCmp;
		p = getLineEditValue(diffByEdit);
		break;
	case '%':
		cmpFun = ModIsCmp;
		p = getLineEditValue(moduloEdit);
		break;
	default:
		cmpFun = NULL;
		break;
	}

	if (cmpFun == NULL)
	{
		return;
	}
	//printf("Performing Relative Search Operation %zi: '%c'  '%lli'  '0x%llx' \n", deactvFrameStack.size()+1, cmpOp, (long long int)p, (unsigned long long int)p );

	it = actvSrchList.begin();

	while (it != actvSrchList.end())
	{
		loc = *it;

		switch (dpySize)
		{
		default:
		case 'b':
		{
			if (dpyType == 's')
			{
				x = loc->val.v8.i;
				y = loc->hist.back().v8.i;
			}
			else
			{
				x = loc->val.v8.u;
				y = loc->hist.back().v8.u;
			}
		}
		break;
		case 'w':
		{
			if (dpyType == 's')
			{
				x = loc->val.v16.i;
				y = loc->hist.back().v16.i;
			}
			else
			{
				x = loc->val.v16.u;
				y = loc->hist.back().v16.u;
			}
		}
		break;
		case 'd':
		{
			if (dpyType == 's')
			{
				x = loc->val.v32.i;
				y = loc->hist.back().v32.i;
			}
			else
			{
				x = loc->val.v32.u;
				y = loc->hist.back().v32.u;
			}
		}
		break;
		}

		if (cmpFun(x, y, p) == false)
		{
			//printf("Eliminated Address: $%04X\n", loc->addr );
			it = actvSrchList.erase(it);

			if (storeHistory)
			{
				deactvSrchList.push_back(loc);
				elimCount++;
			}
		}
		else
		{
			if (storeHistory)
			{
				loc->hist.push_back(loc->val);
			}
			it++;
		}
	}

	if (storeHistory)
	{
		deactvFrameStack.push_back(elimCount);
	}

	vbar->setMaximum(actvSrchList.size());
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::SearchSpecificValue(void)
{
	int elimCount = 0;
	std::list<struct memoryLocation_t *>::iterator it;
	memoryLocation_t *loc = NULL;
	int64_t x = 0, y = 0, p = 0;
	bool (*cmpFun)(int64_t x, int64_t y, int64_t p) = NULL;
	bool storeHistory = !autoSearchCbox->isChecked();

	switch (cmpOp)
	{
	case '<':
		cmpFun = LessCmp;
		break;
	case '>':
		cmpFun = MoreCmp;
		break;
	case '=':
		cmpFun = EqualCmp;
		break;
	case '!':
		cmpFun = UnequalCmp;
		break;
	case 'l':
		cmpFun = LessEqualCmp;
		break;
	case 'm':
		cmpFun = MoreEqualCmp;
		break;
	case 'd':
		cmpFun = DiffByCmp;
		p = getLineEditValue(diffByEdit);
		break;
	case '%':
		cmpFun = ModIsCmp;
		p = getLineEditValue(moduloEdit);
		break;
	default:
		cmpFun = NULL;
		break;
	}

	if (cmpFun == NULL)
	{
		return;
	}
	y = getLineEditValue(specValEdit);

	//printf("Performing Specific Value Search Operation %zi: 'x %c %lli' '%lli'  '0x%llx' \n", deactvFrameStack.size()+1, cmpOp,
	//     (long long int)y, (long long int)p, (unsigned long long int)p );

	it = actvSrchList.begin();

	while (it != actvSrchList.end())
	{
		loc = *it;

		switch (dpySize)
		{
		default:
		case 'b':
		{
			if (dpyType == 's')
			{
				x = loc->val.v8.i;
			}
			else
			{
				x = loc->val.v8.u;
			}
		}
		break;
		case 'w':
		{
			if (dpyType == 's')
			{
				x = loc->val.v16.i;
			}
			else
			{
				x = loc->val.v16.u;
			}
		}
		break;
		case 'd':
		{
			if (dpyType == 's')
			{
				x = loc->val.v32.i;
			}
			else
			{
				x = loc->val.v32.u;
			}
		}
		break;
		}

		if (cmpFun(x, y, p) == false)
		{
			//printf("Eliminated Address: $%04X\n", loc->addr );
			it = actvSrchList.erase(it);

			if (storeHistory)
			{
				deactvSrchList.push_back(loc);
				elimCount++;
			}
		}
		else
		{
			if (storeHistory)
			{
				loc->hist.push_back(loc->val);
			}
			it++;
		}
	}

	if (storeHistory)
	{
		deactvFrameStack.push_back(elimCount);
	}

	vbar->setMaximum(actvSrchList.size());
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::SearchSpecificAddress(void)
{
	int elimCount = 0;
	std::list<struct memoryLocation_t *>::iterator it;
	memoryLocation_t *loc = NULL;
	int64_t x = 0, y = 0, p = 0;
	bool (*cmpFun)(int64_t x, int64_t y, int64_t p) = NULL;
	bool storeHistory = !autoSearchCbox->isChecked();

	switch (cmpOp)
	{
	case '<':
		cmpFun = LessCmp;
		break;
	case '>':
		cmpFun = MoreCmp;
		break;
	case '=':
		cmpFun = EqualCmp;
		break;
	case '!':
		cmpFun = UnequalCmp;
		break;
	case 'l':
		cmpFun = LessEqualCmp;
		break;
	case 'm':
		cmpFun = MoreEqualCmp;
		break;
	case 'd':
		cmpFun = DiffByCmp;
		p = getLineEditValue(diffByEdit);
		break;
	case '%':
		cmpFun = ModIsCmp;
		p = getLineEditValue(moduloEdit);
		break;
	default:
		cmpFun = NULL;
		break;
	}

	if (cmpFun == NULL)
	{
		return;
	}
	y = getLineEditValue(specAddrEdit);

	//printf("Performing Specific Address Search Operation %zi: 'x %c 0x%llx' '%lli'  '0x%llx' \n", deactvFrameStack.size()+1, cmpOp,
	//     (unsigned long long int)y, (long long int)p, (unsigned long long int)p );

	it = actvSrchList.begin();

	while (it != actvSrchList.end())
	{
		loc = *it;

		x = loc->addr;

		if (cmpFun(x, y, p) == false)
		{
			//printf("Eliminated Address: $%04X\n", loc->addr );
			it = actvSrchList.erase(it);

			if (storeHistory)
			{
				deactvSrchList.push_back(loc);
				elimCount++;
			}
		}
		else
		{
			if (storeHistory)
			{
				loc->hist.push_back(loc->val);
			}
			it++;
		}
	}

	if (storeHistory)
	{
		deactvFrameStack.push_back(elimCount);
	}

	vbar->setMaximum(actvSrchList.size());
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::SearchNumberChanges(void)
{
	int elimCount = 0;
	std::list<struct memoryLocation_t *>::iterator it;
	memoryLocation_t *loc = NULL;
	int64_t x = 0, y = 0, p = 0;
	bool (*cmpFun)(int64_t x, int64_t y, int64_t p) = NULL;
	bool storeHistory = !autoSearchCbox->isChecked();

	switch (cmpOp)
	{
	case '<':
		cmpFun = LessCmp;
		break;
	case '>':
		cmpFun = MoreCmp;
		break;
	case '=':
		cmpFun = EqualCmp;
		break;
	case '!':
		cmpFun = UnequalCmp;
		break;
	case 'l':
		cmpFun = LessEqualCmp;
		break;
	case 'm':
		cmpFun = MoreEqualCmp;
		break;
	case 'd':
		cmpFun = DiffByCmp;
		p = getLineEditValue(diffByEdit);
		break;
	case '%':
		cmpFun = ModIsCmp;
		p = getLineEditValue(moduloEdit);
		break;
	default:
		cmpFun = NULL;
		break;
	}

	if (cmpFun == NULL)
	{
		return;
	}
	y = getLineEditValue(numChangeEdit);

	//printf("Performing Number of Changes Search Operation %zi: 'x %c 0x%llx' '%lli'  '0x%llx' \n", deactvFrameStack.size()+1, cmpOp,
	//     (unsigned long long int)y, (long long int)p, (unsigned long long int)p );

	it = actvSrchList.begin();

	while (it != actvSrchList.end())
	{
		loc = *it;

		x = loc->chgCount;

		if (cmpFun(x, y, p) == false)
		{
			//printf("Eliminated Address: $%04X\n", loc->addr );
			it = actvSrchList.erase(it);

			if (storeHistory)
			{
				deactvSrchList.push_back(loc);
				elimCount++;
			}
		}
		else
		{
			if (storeHistory)
			{
				loc->hist.push_back(loc->val);
			}
			it++;
		}
	}

	if (storeHistory)
	{
		deactvFrameStack.push_back(elimCount);
	}

	vbar->setMaximum(actvSrchList.size());
}
//----------------------------------------------------------------------------
static unsigned int ReadValueAtHardwareAddress(int address, unsigned int size)
{
	unsigned int value = 0;
	int maxAddr = ShowROM ? 0x10000 : 0x8000;

	// read as little endian
	for (unsigned int i = 0; i < size; i++)
	{
		if (address < maxAddr)
		{
			value <<= 8;
			value |= lclMemBuf[address];
			address++;
		}
	}
	return value;
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::runSearch(void)
{
	if (pv_btn->isChecked())
	{
		// Relative Value
		SearchRelative();
	}
	else if (sv_btn->isChecked())
	{
		// Specific Value
		SearchSpecificValue();
	}
	else if (sa_btn->isChecked())
	{
		// Specific Address
		SearchSpecificAddress();
	}
	else if (nc_btn->isChecked())
	{
		// Number of Changes
		SearchNumberChanges();
	}

	undoButton->setEnabled(deactvFrameStack.size() > 0);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::copyRamToLocalBuffer(void)
{
	for (unsigned int addr = 0; addr < 0x10000; addr++)
	{
		lclMemBuf[addr] = GetMem(addr);
	}
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::resetSearch(void)
{
	memset(lclMemBuf, 0, sizeof(lclMemBuf));

	FCEU_WRAPPER_LOCK();
	copyRamToLocalBuffer();
	FCEU_WRAPPER_UNLOCK();

	actvSrchList.clear();
	deactvSrchList.clear();
	deactvFrameStack.clear();

	for (unsigned int addr = 0; addr < 0x10000; addr++)
	{
		memLoc[addr].hist.clear();
		memLoc[addr].addr = addr;
		memLoc[addr].val.v8.u = lclMemBuf[addr];
		memLoc[addr].val.v16.u = ReadValueAtHardwareAddress(addr, 2);
		memLoc[addr].val.v32.u = ReadValueAtHardwareAddress(addr, 4);
		memLoc[addr].elimMask = 0;
		memLoc[addr].chgCount = 0;
		memLoc[addr].hist.push_back(memLoc[addr].val);
	}

	calcRamList();

	undoButton->setEnabled(false);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::undoSearch(void)
{
	int elimCount = 0;
	memoryLocation_t *loc = NULL;
	std::list<struct memoryLocation_t *>::iterator it;

	if (deactvFrameStack.empty())
	{
		printf("Error: UNDO Stack is empty\n");
		return;
	}
	printf("UNDO Search Operation: %zi \n", deactvFrameStack.size());
	// To Undo a search operation:
	// 1. Loop through all current active values and revert previous value back to what it was before the search
	// 2. Get the number of eliminated values from the deactivate search stack and tranfer those values back into the active search list.

	it = actvSrchList.begin();

	while (it != actvSrchList.end())
	{
		loc = *it;

		if (!loc->hist.empty())
		{
			loc->hist.pop_back();
		}
		it++;
	}

	elimCount = deactvFrameStack.back();
	deactvFrameStack.pop_back();

	while (elimCount > 0)
	{
		if (deactvSrchList.empty())
		{
			printf("Error: Something went wrong with UNDO operation\n");
			break;
		}
		loc = deactvSrchList.back();
		deactvSrchList.pop_back();
		actvSrchList.push_back(loc);
		elimCount--;
	}

	sortActvMemList();

	undoButton->setEnabled(deactvFrameStack.size() > 0);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::clearChangeCounts(void)
{
	for (unsigned int addr = 0; addr < 0x10000; addr++)
	{
		memLoc[addr].chgCount = 0;
	}
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::eliminateSelAddr(void)
{
	int elimCount = 0, op = '!';
	std::list<struct memoryLocation_t *>::iterator it;
	memoryLocation_t *loc = NULL;
	int64_t x = 0, y = 0, p = 0;
	bool (*cmpFun)(int64_t x, int64_t y, int64_t p) = NULL;

	switch (op)
	{
	case '<':
		cmpFun = LessCmp;
		break;
	case '>':
		cmpFun = MoreCmp;
		break;
	case '=':
		cmpFun = EqualCmp;
		break;
	case '!':
		cmpFun = UnequalCmp;
		break;
	case 'l':
		cmpFun = LessEqualCmp;
		break;
	case 'm':
		cmpFun = MoreEqualCmp;
		break;
	case 'd':
		cmpFun = DiffByCmp;
		p = getLineEditValue(diffByEdit);
		break;
	case '%':
		cmpFun = ModIsCmp;
		p = getLineEditValue(moduloEdit);
		break;
	default:
		cmpFun = NULL;
		break;
	}

	if (cmpFun == NULL)
	{
		return;
	}
	y = ramView->getSelAddr();

	if (y < 0)
	{
		return;
	}

	printf("Performing Eliminate Address Operation %zi: 'x %c 0x%llx' '%lli'  '0x%llx' \n", deactvFrameStack.size() + 1, cmpOp,
		   (unsigned long long int)y, (long long int)p, (unsigned long long int)p);

	it = actvSrchList.begin();

	while (it != actvSrchList.end())
	{
		loc = *it;

		x = loc->addr;

		if (cmpFun(x, y, p) == false)
		{
			//printf("Eliminated Address: $%04X\n", loc->addr );
			it = actvSrchList.erase(it);

			deactvSrchList.push_back(loc);
			elimCount++;
		}
		else
		{
			loc->hist.push_back(loc->val);
			it++;
		}
	}

	deactvFrameStack.push_back(elimCount);

	vbar->setMaximum(actvSrchList.size());
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::addCheatClicked(void)
{
	int addr = ramView->getSelAddr();
	char desc[128];

	if (addr < 0)
	{
		return;
	}
	strcpy(desc, "Quick Cheat Add");

	FCEU_WRAPPER_LOCK();

	FCEUI_AddCheat(desc, addr, GetMem(addr), -1, 1);

	updateCheatDialog();

	FCEU_WRAPPER_UNLOCK();
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::addRamWatchClicked(void)
{
	int addr = ramView->getSelAddr();
	char desc[128];

	if (addr < 0)
	{
		return;
	}
	strcpy(desc, "Quick Watch Add");

	int size = 1;
	switch (dpySize)
	{
	case 'd':
		size = 4;
		break;
	case 'w':
		size = 2;
		break;
	case 'b':
		size = 1;
		break;
	default:
		break;
	}
	ramWatchList.add_entry(desc, addr, dpyType, size, 0);

	openRamWatchWindow(consoleWindow);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::hexEditSelAddr(void)
{
	int addr = ramView->getSelAddr();

	if (addr < 0)
	{
		return;
	}
	hexEditorOpenFromDebugger(QHexEdit::MODE_NES_RAM, addr);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::opLtClicked(void)
{
	cmpOp = '<';
	diffByEdit->setEnabled(false);
	moduloEdit->setEnabled(false);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::opGtClicked(void)
{
	cmpOp = '>';
	diffByEdit->setEnabled(false);
	moduloEdit->setEnabled(false);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::opLeClicked(void)
{
	cmpOp = 'l';
	diffByEdit->setEnabled(false);
	moduloEdit->setEnabled(false);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::opGeClicked(void)
{
	cmpOp = 'm';
	diffByEdit->setEnabled(false);
	moduloEdit->setEnabled(false);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::opEqClicked(void)
{
	cmpOp = '=';
	diffByEdit->setEnabled(false);
	moduloEdit->setEnabled(false);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::opNeClicked(void)
{
	cmpOp = '!';
	diffByEdit->setEnabled(false);
	moduloEdit->setEnabled(false);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::opDfClicked(void)
{
	cmpOp = 'd';
	diffByEdit->setEnabled(true);
	moduloEdit->setEnabled(false);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::opMdClicked(void)
{
	cmpOp = '%';
	diffByEdit->setEnabled(false);
	moduloEdit->setEnabled(true);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::pvBtnClicked(void)
{
	specValEdit->setEnabled(false);
	specAddrEdit->setEnabled(false);
	numChangeEdit->setEnabled(false);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::svBtnClicked(void)
{
	specValEdit->setEnabled(true);
	specAddrEdit->setEnabled(false);
	numChangeEdit->setEnabled(false);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::saBtnClicked(void)
{
	specValEdit->setEnabled(false);
	specAddrEdit->setEnabled(true);
	numChangeEdit->setEnabled(false);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::ncBtnClicked(void)
{
	specValEdit->setEnabled(false);
	specAddrEdit->setEnabled(false);
	numChangeEdit->setEnabled(true);
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::ds1Clicked(void)
{
	dpySize = 'b';
	misalignedCbox->setEnabled(false);
	calcRamList();
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::ds2Clicked(void)
{
	dpySize = 'w';
	misalignedCbox->setEnabled(true);
	calcRamList();
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::ds4Clicked(void)
{
	dpySize = 'd';
	misalignedCbox->setEnabled(true);
	calcRamList();
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::signedTypeClicked(void)
{
	dpyType = 's';
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::unsignedTypeClicked(void)
{
	dpyType = 'u';
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::hexTypeClicked(void)
{
	dpyType = 'h';
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::calcRamList(void)
{
	int i, addr, startAddr, endAddr;
	int numRegions = 0, dataSize = 1;
	int regionStart[5], regionEnd[5];

	if ( ShowRAM )
	{
		regionStart[ numRegions ] = 0x0000;		
		  regionEnd[ numRegions ] = 0x0800;		
		numRegions++;
	}

	if ( ShowSRAM )
	{
		regionStart[ numRegions ] = 0x6000;		
		  regionEnd[ numRegions ] = 0x8000;		
		numRegions++;
	}

	if ( ShowROM )
	{
		regionStart[ numRegions ] = 0x08000;		
		  regionEnd[ numRegions ] = 0x10000;		
		numRegions++;
	}

	if (chkMisAligned)
	{
		dataSize = 1;
	}
	else if (dpySize == 'd')
	{
		dataSize = 4;
	}
	else if (dpySize == 'w')
	{
		dataSize = 2;
	}
	else
	{
		dataSize = 1;
	}

	actvSrchList.clear();

	for (i=0; i<numRegions; i++)
	{
		startAddr = regionStart[i];
		  endAddr = regionEnd[i];

		for (addr = startAddr; addr < endAddr; addr += dataSize)
		{
			switch (dpySize)
			{
			case 'd':
				if ((addr + 3) < endAddr)
				{
					if ((memLoc[addr].elimMask == 0) &&
						(memLoc[addr + 1].elimMask == 0) &&
						(memLoc[addr + 2].elimMask == 0) &&
						(memLoc[addr + 3].elimMask == 0))
					{
						actvSrchList.push_back(&memLoc[addr]);
					}
				}
				break;
			case 'w':
				if ((addr + 1) < endAddr)
				{
					if ((memLoc[addr].elimMask == 0) &&
						(memLoc[addr + 1].elimMask == 0))
					{
						actvSrchList.push_back(&memLoc[addr]);
					}
				}
				break;
			default:
			case 'b':
				if (memLoc[addr].elimMask == 0)
				{
					actvSrchList.push_back(&memLoc[addr]);
				}
				break;
			}
		}
	}
	vbar->setMaximum(actvSrchList.size());
}
//----------------------------------------------------------------------------
void RamSearchDialog_t::updateRamValues(void)
{
	std::list<struct memoryLocation_t *>::iterator it;
	memoryLocation_t *loc = NULL;
	memoryState_t val;

	for (it = actvSrchList.begin(); it != actvSrchList.end(); it++)
	{
		loc = *it;

		val.v8.u = lclMemBuf[loc->addr];
		val.v16.u = ReadValueAtHardwareAddress(loc->addr, 2);
		val.v32.u = ReadValueAtHardwareAddress(loc->addr, 4);

		if (dpySize == 'd')
		{
			if (memLoc[loc->addr].val.v32.u != val.v32.u)
			{
				memLoc[loc->addr].val = val;
				memLoc[loc->addr].chgCount++;
			}
		}
		else if (dpySize == 'w')
		{
			if (memLoc[loc->addr].val.v16.u != val.v16.u)
			{
				memLoc[loc->addr].val = val;
				memLoc[loc->addr].chgCount++;
			}
		}
		else
		{
			if (memLoc[loc->addr].val.v8.u != val.v8.u)
			{
				memLoc[loc->addr].val = val;
				memLoc[loc->addr].chgCount++;
			}
		}
	}
}
//----------------------------------------------------------------------------
QRamSearchView::QRamSearchView(QWidget *parent)
	: QWidget(parent)
{
	QPalette pal;
	QColor c, fg(0, 0, 0), bg(255, 255, 255);
	bool useDarkTheme = false;

	pal = this->palette();

	// Figure out if we are using a light or dark theme by checking the
	// default window text grayscale color. If more white, then we will
	// use white text on black background, else we do the opposite.
	c = pal.color(QPalette::WindowText);

	if (qGray(c.red(), c.green(), c.blue()) > 128)
	{
		useDarkTheme = true;
	}

	if (useDarkTheme)
	{
		pal.setColor(QPalette::Base, fg);
		pal.setColor(QPalette::Window, fg);
		pal.setColor(QPalette::WindowText, bg);
	}
	else
	{
		pal.setColor(QPalette::Base, bg);
		pal.setColor(QPalette::Window, bg);
		pal.setColor(QPalette::WindowText, fg);
	}
	this->setPalette(pal);

	font.setFamily("Courier New");
	font.setStyle(QFont::StyleNormal);
	font.setStyleHint(QFont::Monospace);

	calcFontData();

	lineOffset = 0;
	maxLineOffset = 0;
	selAddr = -1;
	selLine = -1;

	wheelPixelCounter = 0;
	wheelAngleCounter = 0;

	setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);
	setFocusPolicy(Qt::StrongFocus);
}
//----------------------------------------------------------------------------
QRamSearchView::~QRamSearchView(void)
{
}
//----------------------------------------------------------------------------
void QRamSearchView::calcFontData(void)
{
	this->setFont(font);
	QFontMetrics metrics(font);
#if QT_VERSION > QT_VERSION_CHECK(5, 11, 0)
	pxCharWidth = metrics.horizontalAdvance(QLatin1Char('2'));
#else
	pxCharWidth = metrics.width(QLatin1Char('2'));
#endif
	pxCharHeight = metrics.height();
	pxLineSpacing = metrics.lineSpacing() * 1.25;
	pxLineLead = pxLineSpacing - pxCharHeight;
	pxCursorHeight = pxCharHeight;
	pxColWidth[0] = pxCharWidth * 10;
	pxColWidth[1] = pxCharWidth * 15;
	pxColWidth[2] = pxCharWidth * 15;
	pxColWidth[3] = pxCharWidth * 15;
	pxLineWidth = pxColWidth[0] + pxColWidth[1] + pxColWidth[2] + pxColWidth[3];

	viewLines = (viewHeight / pxLineSpacing) + 1;

	setMinimumWidth(pxLineWidth);
}
//----------------------------------------------------------------------------
void QRamSearchView::setScrollBars(QScrollBar *hbar, QScrollBar *vbar)
{
	this->hbar = hbar;
	this->vbar = vbar;
}
//----------------------------------------------------
void QRamSearchView::resizeEvent(QResizeEvent *event)
{
	viewWidth = event->size().width();
	viewHeight = event->size().height();

	//printf("QAsmView Resize: %ix%i\n", viewWidth, viewHeight );

	viewLines = (viewHeight / pxLineSpacing) + 1;

	//maxLineOffset = 0; // mb.numLines() - viewLines + 1;

	if (viewWidth >= pxLineWidth)
	{
		pxLineXScroll = 0;
	}
	else
	{
		pxLineXScroll = (int)(0.010f * (float)hbar->value() * (float)(pxLineWidth - viewWidth));
	}
}
//----------------------------------------------------------------------------
int QRamSearchView::convPixToLine(QPoint p)
{
	int lineNum = 0;
	float ly = ((float)pxLineLead / (float)pxLineSpacing);
	float py = ((float)p.y() - (float)pxLineSpacing) / (float)pxLineSpacing;
	float ry = fmod(py, 1.0);

	if (ry < ly)
	{
		lineNum = (((int)py) - 1);
	}
	else
	{
		lineNum = (((int)py));
	}
	//printf("Pos: %ix%i = %i\n", p.x(), p.y(), lineNum );

	return lineNum;
}
//----------------------------------------------------------------------------
void QRamSearchView::keyPressEvent(QKeyEvent *event)
{
	//printf("Ram Search View Key Press: 0x%x \n", event->key() );

	if (event->matches(QKeySequence::MoveToPreviousLine))
	{
		selAddr = -1;
		if (selLine > 0)
		{
			selLine--;
		}
		if (selLine < lineOffset)
		{
			lineOffset = selLine;
		}
		if (lineOffset < 0)
		{
			lineOffset = 0;
		}
		vbar->setValue(lineOffset);
	}
	else if (event->matches(QKeySequence::MoveToNextLine))
	{
		selAddr = -1;
		selLine++;

		if (selLine >= actvSrchList.size())
		{
			selLine = actvSrchList.size() - 1;
		}

		if (selLine >= (lineOffset + viewLines))
		{
			lineOffset = selLine - viewLines + 1;
		}

		if (lineOffset >= maxLineOffset)
		{
			lineOffset = maxLineOffset;
		}
		vbar->setValue(lineOffset);
	}
	else if (event->matches(QKeySequence::MoveToNextPage))
	{
		lineOffset += ((3 * viewLines) / 4);

		if (lineOffset >= maxLineOffset)
		{
			lineOffset = maxLineOffset;
		}
		vbar->setValue(lineOffset);
	}
	else if (event->matches(QKeySequence::MoveToPreviousPage))
	{
		lineOffset -= ((3 * viewLines) / 4);

		if (lineOffset < 0)
		{
			lineOffset = 0;
		}
		vbar->setValue(lineOffset);
	}
}
//----------------------------------------------------------------------------
void QRamSearchView::mousePressEvent(QMouseEvent *event)
{
	int lineNum = convPixToLine(event->pos());

	//printf("c: %ix%i \n", c.x(), c.y() );

	if (event->button() == Qt::LeftButton)
	{
		selLine = lineOffset + lineNum;
	}
}
//----------------------------------------------------------------------------
void QRamSearchView::wheelEvent(QWheelEvent *event)
{
	int zDelta = 0;

	QPoint numPixels = event->pixelDelta();
	QPoint numDegrees = event->angleDelta();

	if (!numPixels.isNull())
	{
		wheelPixelCounter -= numPixels.y();
		//printf("numPixels: (%i,%i) \n", numPixels.x(), numPixels.y() );
		
		if ( wheelPixelCounter >= pxLineSpacing )
		{
			zDelta = (wheelPixelCounter / pxLineSpacing);

			wheelPixelCounter = wheelPixelCounter % pxLineSpacing;
		}
		else if ( wheelPixelCounter <= -pxLineSpacing )
		{
			zDelta = (wheelPixelCounter / pxLineSpacing);

			wheelPixelCounter = wheelPixelCounter % pxLineSpacing;
		}
	}
	else if (!numDegrees.isNull())
	{
		int stepDeg = 120;
		//QPoint numSteps = numDegrees / 15;
		//printf("numSteps: (%i,%i) \n", numSteps.x(), numSteps.y() );
		//printf("numDegrees: (%i,%i)  %i\n", numDegrees.x(), numDegrees.y(), pxLineSpacing );
		wheelAngleCounter -= numDegrees.y();

		if ( wheelAngleCounter <= stepDeg )
		{
			zDelta = wheelAngleCounter / stepDeg;

			wheelAngleCounter = wheelAngleCounter % stepDeg;
		}
		else if ( wheelAngleCounter >= stepDeg )
		{
			zDelta = wheelAngleCounter / stepDeg;

			wheelAngleCounter = wheelAngleCounter % stepDeg;
		}
	}
	//printf("Wheel Event: %i\n", wheelPixelCounter);

	if (zDelta != 0)
	{
		lineOffset += zDelta;

		if (lineOffset < 0)
		{
			lineOffset = 0;
		}
		else if (lineOffset > maxLineOffset)
		{
			lineOffset = maxLineOffset;
		}
		vbar->setValue(lineOffset);
	}

	event->accept();
}
//----------------------------------------------------------------------------
void QRamSearchView::paintEvent(QPaintEvent *event)
{
	int i, x, y, row, nrow;
	std::list<struct memoryLocation_t *>::iterator it;
	char addrStr[32], valStr[32], prevStr[32], chgStr[32];
	QPainter painter(this);
	memoryLocation_t *loc = NULL;
	int fieldWidth, fieldPad[4], fieldLen[4], fieldStart[4];
	const char *fieldText[4];

	painter.setFont(font);
	viewWidth = event->rect().width();
	viewHeight = event->rect().height();
	fieldWidth = viewWidth / 4;

	for (i = 0; i < 4; i++)
	{
		fieldStart[i] = fieldWidth * i;
	}

	nrow = (viewHeight / pxLineSpacing) - 1;

	if (nrow < 1)
		nrow = 1;

	viewLines = nrow;

	maxLineOffset = actvSrchList.size() - nrow;

	if (maxLineOffset < 1)
		maxLineOffset = 1;

	lineOffset = vbar->value();

	vbar->setMaximum(maxLineOffset);

	if (lineOffset > maxLineOffset)
	{
		lineOffset = maxLineOffset;
		vbar->setValue(lineOffset);
	}
	if (lineOffset < 0)
	{
		lineOffset = 0;
		vbar->setValue(0);
	}

	i = 0;
	it = actvSrchList.begin();
	while (it != actvSrchList.end())
	{
		if (i == lineOffset)
		{
			break;
		}
		i++;
		it++;
	}

	painter.fillRect(0, 0, viewWidth, viewHeight, this->palette().color(QPalette::Window));

	painter.setPen(this->palette().color(QPalette::WindowText));

	pxLineXScroll = (int)(0.010f * (float)hbar->value() * (float)(pxLineWidth - viewWidth));

	x = -pxLineXScroll;
	y = pxLineSpacing;

	strcpy(addrStr, "Address");
	strcpy(valStr, "Value");
	strcpy(prevStr, "Previous");
	strcpy(chgStr, "Changes");

	fieldText[0] = addrStr;
	fieldText[1] = valStr;
	fieldText[2] = prevStr;
	fieldText[3] = chgStr;

	for (i = 0; i < 4; i++)
	{
		fieldLen[i] = strlen(fieldText[i]) * pxCharWidth;

		fieldPad[i] = (fieldWidth - fieldLen[i]) / 2;

		painter.drawText(x + fieldStart[i] + fieldPad[i], y, tr(fieldText[i]));
	}

	y += pxLineSpacing;

	for (row = 0; row < nrow; row++)
	{
		if (it != actvSrchList.end())
		{
			loc = *it;
		}
		else
		{
			loc = NULL;
		}

		if (loc == NULL)
		{
			continue;
		}
		if (selLine >= 0)
		{
			if (selLine == (lineOffset + row))
			{
				selAddr = loc->addr;
			}
		}
		it++;

		if (selAddr == loc->addr)
		{
			painter.fillRect(0, y - pxLineSpacing + pxLineLead, viewWidth, pxLineSpacing, QColor("light blue"));
		}

		sprintf(addrStr, "$%04X", loc->addr);

		if (dpySize == 'd')
		{
			if (dpyType == 'h')
			{
				sprintf(valStr, "0x%08X", loc->val.v32.u);
				sprintf(prevStr, "0x%08X", loc->hist.back().v32.u);
			}
			else if (dpyType == 'u')
			{
				sprintf(valStr, "%u", loc->val.v32.u);
				sprintf(prevStr, "%u", loc->hist.back().v32.u);
			}
			else
			{
				sprintf(valStr, "%i", loc->val.v32.i);
				sprintf(prevStr, "%i", loc->hist.back().v32.i);
			}
		}
		else if (dpySize == 'w')
		{
			if (dpyType == 'h')
			{
				sprintf(valStr, "0x%04X", loc->val.v16.u);
				sprintf(prevStr, "0x%04X", loc->hist.back().v16.u);
			}
			else if (dpyType == 'u')
			{
				sprintf(valStr, "%u", loc->val.v16.u);
				sprintf(prevStr, "%u", loc->hist.back().v16.u);
			}
			else
			{
				sprintf(valStr, "%i", loc->val.v16.i);
				sprintf(prevStr, "%i", loc->hist.back().v16.i);
			}
		}
		else
		{
			if (dpyType == 'h')
			{
				sprintf(valStr, "0x%02X", loc->val.v8.u);
				sprintf(prevStr, "0x%02X", loc->hist.back().v8.u);
			}
			else if (dpyType == 'u')
			{
				sprintf(valStr, "%u", loc->val.v8.u);
				sprintf(prevStr, "%u", loc->hist.back().v8.u);
			}
			else
			{
				sprintf(valStr, "%i", loc->val.v8.i);
				sprintf(prevStr, "%i", loc->hist.back().v8.i);
			}
		}
		sprintf(chgStr, "%u", loc->chgCount);

		for (i = 0; i < 4; i++)
		{
			fieldLen[i] = strlen(fieldText[i]) * pxCharWidth;

			fieldPad[i] = (fieldWidth - fieldLen[i]) / 2;

			painter.drawText(x + fieldStart[i] + fieldPad[i], y, tr(fieldText[i]));
		}

		y += pxLineSpacing;
	}

	painter.drawLine(0, pxLineSpacing + pxLineLead, viewWidth, pxLineSpacing + pxLineLead);
	painter.drawLine(x + fieldStart[1], 0, x + fieldStart[1], viewHeight);
	painter.drawLine(x + fieldStart[2], 0, x + fieldStart[2], viewHeight);
	painter.drawLine(x + fieldStart[3], 0, x + fieldStart[3], viewHeight);
}
//----------------------------------------------------------------------------