From 083a8802e608a69d622ff5cda5d21ff61e289a85 Mon Sep 17 00:00:00 2001
From: Christoph Egger <Christoph.Egger@fau.de>
Date: Tue, 17 Feb 2015 17:53:39 +0100
Subject: [PATCH] Add context menu to create Functions

---
 src/gui/Mainwindow.cxx               |  9 ++++--
 src/gui/Mainwindow.hxx               |  1 +
 src/gui/widgets/BasicBlockWidget.cxx | 42 +++++++++++++++++++++++-----
 src/gui/widgets/BasicBlockWidget.hxx |  3 +-
 4 files changed, 45 insertions(+), 10 deletions(-)

diff --git a/src/gui/Mainwindow.cxx b/src/gui/Mainwindow.cxx
index 55bc86d..70d31d5 100644
--- a/src/gui/Mainwindow.cxx
+++ b/src/gui/Mainwindow.cxx
@@ -127,13 +127,18 @@ void Mainwindow::requestNewFunction() {
 	NewFunctionDialog dialog;
 	int result = dialog.exec();
 	if (QDialog::Accepted == result) {
-		LOG4CXX_DEBUG(logger, "requesting Function at " << std::hex << dialog.result());
-		manager->getDisassembler()->disassembleFunctionAt(dialog.result());
+		requestNewFunctionByAddress(dialog.result());
 	} else {
 		LOG4CXX_DEBUG(logger, "requestNewFunction aborted");
 	}
 }
 
+void Mainwindow::requestNewFunctionByAddress(uint64_t address) {
+	LOG4CXX_DEBUG(logger, "requesting Function at " << std::hex << address);
+	manager->getDisassembler()->disassembleFunctionAt(address);
+	switchMainPlaneToAddress(address);
+}
+
 void Mainwindow::renameFunction(QListWidgetItem * item) {
 	RenameFunctionDialog dialog;
 	int result = dialog.exec();
diff --git a/src/gui/Mainwindow.hxx b/src/gui/Mainwindow.hxx
index 179a9c4..7084e2f 100644
--- a/src/gui/Mainwindow.hxx
+++ b/src/gui/Mainwindow.hxx
@@ -49,6 +49,7 @@ private:
 	log4cxx::LoggerPtr logger;
 public Q_SLOTS:
 	void switchMainPlaneToAddress(uint64_t);
+	void requestNewFunctionByAddress(uint64_t address);
 private Q_SLOTS:
 	void quit();
 	void open();
diff --git a/src/gui/widgets/BasicBlockWidget.cxx b/src/gui/widgets/BasicBlockWidget.cxx
index f611329..586b707 100644
--- a/src/gui/widgets/BasicBlockWidget.cxx
+++ b/src/gui/widgets/BasicBlockWidget.cxx
@@ -1,14 +1,42 @@
 #include "BasicBlockWidget.hxx"
+#include "CustomQGraphicsTextItem.hxx"
 #include "gui/Mainwindow.hxx"
 
+class CustomQGraphicsTextItem : public QObject, public QGraphicsTextItem {
+public:
+	CustomQGraphicsTextItem(const QString& text, BasicBlockWidget* parent, Mainwindow* mainwindow)
+		: QGraphicsTextItem(text, parent), parent(parent), mainwindow(mainwindow) {}
+	void contextMenuEvent(QGraphicsSceneContextMenuEvent*);
+private:
+	BasicBlockWidget* parent;
+	Mainwindow* mainwindow;
+};
+
+void CustomQGraphicsTextItem::contextMenuEvent(QGraphicsSceneContextMenuEvent* event) {
+	QTextCursor c = textCursor();
+	c.setPosition(document()->documentLayout()->hitTest(event->pos(), Qt::FuzzyHit));
+	c.select(QTextCursor::WordUnderCursor);
+
+	QMenu menu;
+	bool ok;
+	uint64_t address = c.selectedText().toLongLong(&ok, 16);
+	if (ok) {
+		QAction* act = menu.addAction(c.selectedText() + " is a Function");
+		QObject::connect(act, &QAction::triggered,
+		                 [=]() {mainwindow->requestNewFunctionByAddress(address);});
+	}
+	menu.exec(event->screenPos());
+}
+
 BasicBlockWidget::BasicBlockWidget(const QString& name, BasicBlock * block,
                                    Mainwindow * mainwindow)
 	: width(270), height(45), name(name)
-	, _widget("", this), _table(NULL)
+	, _table(NULL)
 	, block(block), mainwindow(mainwindow) {
 	next[0] = NULL;	next[1] = NULL;
-	_widget.setPos(5, 20);
-	_widget.setTextInteractionFlags(Qt::TextSelectableByMouse|
+	_widget.reset(new CustomQGraphicsTextItem("", this, mainwindow));
+	_widget->setPos(5, 20);
+	_widget->setTextInteractionFlags(Qt::TextSelectableByMouse|
 	                                Qt::LinksAccessibleByMouse);
 
 	if (width < 250) width = 250;
@@ -27,7 +55,7 @@ void BasicBlockWidget::addItem(uint8_t* bytes, size_t num_bytes,
 		QTextTableFormat format;
 		format.setBorderStyle(QTextFrameFormat::BorderStyle_None);
 		format.setBorder(0);
-		_table = _widget.textCursor().insertTable(1, 3, format);
+		_table = _widget->textCursor().insertTable(1, 3, format);
 	}
 
 	for (size_t i(0); i < num_bytes; ++i) {
@@ -46,7 +74,7 @@ void BasicBlockWidget::addItem(uint8_t* bytes, size_t num_bytes,
 
 	_table->cellAt(row, 1).firstCursorPosition().insertHtml(line);
 
-	QObject::connect(&_widget, &QGraphicsTextItem::linkActivated,
+	QObject::connect(_widget.get(), &QGraphicsTextItem::linkActivated,
 	                 [=](QString str) {
 		                 if (str.startsWith("function:")) {
 			                 QString address = str.remove("function:");
@@ -54,8 +82,8 @@ void BasicBlockWidget::addItem(uint8_t* bytes, size_t num_bytes,
 		                 }
 	                 });
 
-	width = 10 + _widget.boundingRect().width();
-	height = 25 + _widget.boundingRect().height();
+	width = 10 + _widget->boundingRect().width();
+	height = 25 + _widget->boundingRect().height();
 
 	if (width < 250) width = 250;
 }
diff --git a/src/gui/widgets/BasicBlockWidget.hxx b/src/gui/widgets/BasicBlockWidget.hxx
index 2122bf2..5d23d9b 100644
--- a/src/gui/widgets/BasicBlockWidget.hxx
+++ b/src/gui/widgets/BasicBlockWidget.hxx
@@ -7,6 +7,7 @@
 #include <cassert>
 #include <tuple>
 #include <array>
+#include <memory>
 
 class Mainwindow;
 
@@ -42,7 +43,7 @@ public:
 private:
 	uint32_t width, height;
 	QString name;
-	QGraphicsTextItem _widget;
+	std::unique_ptr<QGraphicsTextItem> _widget;
 	QTextTable* _table;
 	BasicBlock* block;
 	Mainwindow* mainwindow;
-- 
2.39.5