From 73a9399f5d1d86c7e291498b7fe836550f2f76ab Mon Sep 17 00:00:00 2001
From: Rusty Wagner <rusty@vector35.com>
Date: Tue, 2 Apr 2019 15:30:45 -0400
Subject: Add a C++ version of the triage plugin (no Makefile yet)

---
 examples/triage/entropy.cpp | 113 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 examples/triage/entropy.cpp

(limited to 'examples/triage/entropy.cpp')

diff --git a/examples/triage/entropy.cpp b/examples/triage/entropy.cpp
new file mode 100644
index 00000000..e87615d5
--- /dev/null
+++ b/examples/triage/entropy.cpp
@@ -0,0 +1,113 @@
+#include <QtCore/QTimer>
+#include <QtGui/QPainter>
+#include "entropy.h"
+#include "view.h"
+#include "theme.h"
+
+
+EntropyThread::EntropyThread(BinaryViewRef data, int width, size_t blockSize)
+{
+	m_data = data;
+	m_image = QImage(width, 1, QImage::Format_ARGB32);
+	m_blockSize = blockSize;
+	m_updated = false;
+	m_running = true;
+	m_thread = std::thread([=]() { Run(); });
+}
+
+
+EntropyThread::~EntropyThread()
+{
+	m_running = false;
+	m_thread.join();
+}
+
+
+void EntropyThread::Run()
+{
+	int width = m_image.width();
+	for (int i = 0; i < width; i++)
+	{
+		if (!m_running)
+			break;
+		std::vector<float> entropy = m_data->GetEntropy(m_data->GetStart() + ((uint64_t)i * m_blockSize), m_blockSize, m_blockSize);
+		int v;
+		if (entropy.size() == 0)
+			v = 0;
+		else
+			v = (int)(entropy[0] * 255);
+		if (v >= 240)
+		{
+			QColor color = getThemeColor(YellowStandardHighlightColor);
+			m_image.setPixelColor(i, 0, color);
+		}
+		else
+		{
+			QColor baseColor = getThemeColor(FeatureMapBaseColor);
+			QColor entropyColor = getThemeColor(BlueStandardHighlightColor);
+			QColor color = mixColor(baseColor, entropyColor, (uint8_t)v);
+			m_image.setPixelColor(i, 0, color);
+		}
+		m_updated = true;
+	}
+}
+
+
+EntropyWidget::EntropyWidget(QWidget* parent, TriageView* view, BinaryViewRef data): QWidget(parent)
+{
+	m_view = view;
+	m_data = data;
+	m_rawData = data->GetFile()->GetViewOfType("Raw");
+
+	m_blockSize = 1024;
+	m_width = (int)(m_rawData->GetLength() / (uint64_t)m_blockSize);
+	m_thread = new EntropyThread(m_rawData, m_width, m_blockSize);
+
+	QTimer* timer = new QTimer();
+	connect(timer, &QTimer::timeout, this, &EntropyWidget::timerExpired);
+	timer->setInterval(100);
+	timer->setSingleShot(false);
+	timer->start();
+
+	setMinimumHeight(UIContext::getScaledWindowSize(32, 32).height());
+}
+
+
+EntropyWidget::~EntropyWidget()
+{
+	delete m_thread;
+}
+
+
+void EntropyWidget::paintEvent(QPaintEvent*)
+{
+	QPainter p(this);
+	p.drawImage(rect(), m_thread->GetImage());
+	p.drawRect(rect());
+}
+
+
+QSize EntropyWidget::sizeHint() const
+{
+	return QSize(640, 32);
+}
+
+
+void EntropyWidget::timerExpired()
+{
+	if (m_thread->IsUpdated())
+	{
+		m_thread->ResetUpdated();
+		update();
+	}
+}
+
+
+void EntropyWidget::mousePressEvent(QMouseEvent* event)
+{
+	if (event->button() != Qt::LeftButton)
+		return;
+	float frac = (float)event->x() / (float)rect().width();
+	uint64_t offset = (uint64_t)(frac * m_width * m_blockSize);
+	m_view->navigateToFileOffset(offset);
+}
-- 
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