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feat: scanner unknown value + comparison rescan modes, find bar height fix

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Add Cheat Engine-style scan conditions: Unknown Value captures all
aligned addresses as baseline, then Changed/Unchanged/Increased/Decreased
narrow results by comparing current vs previous values. Exact Value
mode unchanged. Also fix find bar search box height to match buttons
and improve MCP bridge instructions.
This commit is contained in:
Matty
2026-03-03 11:32:13 -07:00
committed by IChooseYou
parent 86499e58ee
commit 9c72265901
7 changed files with 323 additions and 90 deletions
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122
src/scannerpanel.cpp
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@@ -93,6 +93,18 @@ ScannerPanel::ScannerPanel(QWidget* parent)
m_typeCombo->setCurrentIndex(2); // default: int32
inputRow->addWidget(m_typeCombo);
m_condLabel = new QLabel(QStringLiteral("Scan:"), this);
inputRow->addWidget(m_condLabel);
m_condCombo = new QComboBox(this);
m_condCombo->addItem(QStringLiteral("Exact Value"), (int)ScanCondition::ExactValue);
m_condCombo->addItem(QStringLiteral("Unknown Value"), (int)ScanCondition::UnknownValue);
m_condCombo->addItem(QStringLiteral("Changed"), (int)ScanCondition::Changed);
m_condCombo->addItem(QStringLiteral("Unchanged"), (int)ScanCondition::Unchanged);
m_condCombo->addItem(QStringLiteral("Increased"), (int)ScanCondition::Increased);
m_condCombo->addItem(QStringLiteral("Decreased"), (int)ScanCondition::Decreased);
inputRow->addWidget(m_condCombo);
m_valueLabel = new QLabel(QStringLiteral("Value:"), this);
inputRow->addWidget(m_valueLabel);
@@ -174,6 +186,8 @@ ScannerPanel::ScannerPanel(QWidget* parent)
// ── Initial state: signature mode ──
m_typeLabel->hide();
m_typeCombo->hide();
m_condLabel->hide();
m_condCombo->hide();
m_valueLabel->hide();
m_valueEdit->hide();
m_execCheck->setChecked(true);
@@ -181,6 +195,8 @@ ScannerPanel::ScannerPanel(QWidget* parent)
// ── Connections ──
connect(m_modeCombo, QOverload<int>::of(&QComboBox::currentIndexChanged),
this, &ScannerPanel::onModeChanged);
connect(m_condCombo, QOverload<int>::of(&QComboBox::currentIndexChanged),
this, &ScannerPanel::onConditionChanged);
connect(m_scanBtn, &QPushButton::clicked,
this, &ScannerPanel::onScanClicked);
connect(m_updateBtn, &QPushButton::clicked,
@@ -251,12 +267,14 @@ void ScannerPanel::setEditorFont(const QFont& font) {
m_valueEdit->setFont(font);
m_modeCombo->setFont(font);
m_typeCombo->setFont(font);
m_condCombo->setFont(font);
m_statusLabel->setFont(font);
m_scanBtn->setFont(font);
m_gotoBtn->setFont(font);
m_copyBtn->setFont(font);
m_patternLabel->setFont(font);
m_typeLabel->setFont(font);
m_condLabel->setFont(font);
m_valueLabel->setFont(font);
m_execCheck->setFont(font);
m_writeCheck->setFont(font);
@@ -280,14 +298,27 @@ void ScannerPanel::onModeChanged(int index) {
m_typeLabel->setVisible(!isSig);
m_typeCombo->setVisible(!isSig);
m_valueLabel->setVisible(!isSig);
m_valueEdit->setVisible(!isSig);
m_condLabel->setVisible(!isSig);
m_condCombo->setVisible(!isSig);
// Show/hide value input based on condition
auto cond = (ScanCondition)m_condCombo->currentData().toInt();
bool needsValue = !isSig && (cond == ScanCondition::ExactValue);
m_valueLabel->setVisible(needsValue);
m_valueEdit->setVisible(needsValue);
// Auto-toggle filters: signatures → executable code, values → writable data
m_execCheck->setChecked(isSig);
m_writeCheck->setChecked(!isSig);
}
void ScannerPanel::onConditionChanged(int /*index*/) {
auto cond = (ScanCondition)m_condCombo->currentData().toInt();
bool needsValue = (cond == ScanCondition::ExactValue);
m_valueLabel->setVisible(needsValue);
m_valueEdit->setVisible(needsValue);
}
void ScannerPanel::onScanClicked() {
if (m_engine->isRunning()) {
m_engine->abort();
@@ -306,12 +337,14 @@ void ScannerPanel::onScanClicked() {
// Build request
ScanRequest req = buildRequest();
if (req.pattern.isEmpty())
if (req.condition != ScanCondition::UnknownValue && req.pattern.isEmpty())
return; // error already shown by buildRequest
m_lastScanMode = m_modeCombo->currentIndex();
if (m_lastScanMode == 1)
if (m_lastScanMode == 1) {
m_lastValueType = (ValueType)m_typeCombo->currentData().toInt();
m_lastCondition = req.condition;
}
m_lastPattern = req.pattern;
m_scanBtn->setText(QStringLiteral("Cancel"));
@@ -336,11 +369,28 @@ ScanRequest ScannerPanel::buildRequest() {
} else {
// Value mode
auto vt = (ValueType)m_typeCombo->currentData().toInt();
if (!serializeValue(vt, m_valueEdit->text(), req.pattern, req.mask, &err)) {
m_statusLabel->setText(QStringLiteral("Value error: %1").arg(err));
return {};
auto cond = (ScanCondition)m_condCombo->currentData().toInt();
// Comparison conditions on fresh scan → treat as unknown
if (cond == ScanCondition::Changed || cond == ScanCondition::Unchanged ||
cond == ScanCondition::Increased || cond == ScanCondition::Decreased) {
cond = ScanCondition::UnknownValue;
}
req.condition = cond;
req.alignment = naturalAlignment(vt);
req.valueSize = valueSizeForType(vt);
if (cond == ScanCondition::UnknownValue) {
// No pattern needed — capture all aligned addresses
req.maxResults = 500000;
} else {
// Exact value mode
if (!serializeValue(vt, m_valueEdit->text(), req.pattern, req.mask, &err)) {
m_statusLabel->setText(QStringLiteral("Value error: %1").arg(err));
return {};
}
}
}
req.filterExecutable = m_execCheck->isChecked();
@@ -355,10 +405,11 @@ void ScannerPanel::onScanFinished(QVector<ScanResult> results) {
m_results = std::move(results);
// Bytes are cached by the engine during scan.
// Value mode: override with exact search pattern (engine caches raw chunk bytes).
// Value mode (exact): override with exact search pattern (engine caches raw chunk bytes).
// Unknown mode: keep engine-captured bytes as-is (they're the baseline).
for (auto& r : m_results) {
r.previousValue.clear();
if (m_lastScanMode == 1)
if (m_lastScanMode == 1 && m_lastCondition == ScanCondition::ExactValue)
r.scanValue = m_lastPattern;
}
@@ -425,29 +476,41 @@ void ScannerPanel::onUpdateClicked() {
int readSize = (m_lastScanMode == 1) ? valueSize() : 16;
// Build filter from current input field
// Determine rescan condition
ScanCondition cond = ScanCondition::ExactValue;
if (m_lastScanMode == 1)
cond = (ScanCondition)m_condCombo->currentData().toInt();
// For UnknownValue on rescan, just re-read all (update only, no filter)
if (cond == ScanCondition::UnknownValue)
cond = ScanCondition::ExactValue; // with empty filter = update only
// Build filter from current input field (only for ExactValue condition)
QByteArray filterPattern, filterMask;
if (m_lastScanMode == 0) {
// Signature mode
QString err;
if (!m_patternEdit->text().trimmed().isEmpty()) {
if (!parseSignature(m_patternEdit->text(), filterPattern, filterMask, &err)) {
m_statusLabel->setText(QStringLiteral("Pattern error: %1").arg(err));
return;
if (cond == ScanCondition::ExactValue) {
if (m_lastScanMode == 0) {
// Signature mode
QString err;
if (!m_patternEdit->text().trimmed().isEmpty()) {
if (!parseSignature(m_patternEdit->text(), filterPattern, filterMask, &err)) {
m_statusLabel->setText(QStringLiteral("Pattern error: %1").arg(err));
return;
}
}
}
} else {
// Value mode
QString err;
if (!m_valueEdit->text().trimmed().isEmpty()) {
auto vt = (ValueType)m_typeCombo->currentData().toInt();
if (!serializeValue(vt, m_valueEdit->text(), filterPattern, filterMask, &err)) {
m_statusLabel->setText(QStringLiteral("Value error: %1").arg(err));
return;
} else {
// Value mode — exact value filter
QString err;
if (!m_valueEdit->text().trimmed().isEmpty()) {
auto vt = (ValueType)m_typeCombo->currentData().toInt();
if (!serializeValue(vt, m_valueEdit->text(), filterPattern, filterMask, &err)) {
m_statusLabel->setText(QStringLiteral("Value error: %1").arg(err));
return;
}
m_lastValueType = vt;
}
m_lastValueType = vt;
}
}
// Comparison conditions (Changed/Unchanged/Increased/Decreased) don't need a filter pattern
// Update last pattern so display uses the new value
if (!filterPattern.isEmpty())
@@ -460,7 +523,8 @@ void ScannerPanel::onUpdateClicked() {
m_progressBar->setValue(0);
m_progressBar->show();
m_engine->startRescan(prov, m_results, readSize, filterPattern, filterMask);
m_engine->startRescan(prov, m_results, readSize, cond, m_lastValueType,
filterPattern, filterMask);
}
void ScannerPanel::onRescanFinished(QVector<ScanResult> results) {
@@ -666,12 +730,14 @@ void ScannerPanel::applyTheme(const Theme& theme) {
theme.border.name(), theme.hover.name());
m_modeCombo->setStyleSheet(comboStyle);
m_typeCombo->setStyleSheet(comboStyle);
m_condCombo->setStyleSheet(comboStyle);
// Labels
QPalette lp;
lp.setColor(QPalette::WindowText, theme.textDim);
m_patternLabel->setPalette(lp);
m_typeLabel->setPalette(lp);
m_condLabel->setPalette(lp);
m_valueLabel->setPalette(lp);
m_statusLabel->setPalette(lp);