From ac5817edcb30c89bc1e5fdcf3a124c3dc2e49630 Mon Sep 17 00:00:00 2001
From: Christoph Egger <Christoph.Egger@fau.de>
Date: Tue, 17 Feb 2015 14:25:47 +0100
Subject: [PATCH] Switch again BasicBlockWidget base -- to QGraphicsTextItem

That one seems to be the final word here -- we'll see. Anyway it has
proper TextDocument / TextCursor support, can render HTML and is a
GraphicsItem so no playing to get scrollbars away -- it doesn't have
any.
---
 src/gui/widgets/BasicBlockWidget.cxx | 63 ++++++++++++++--------------
 src/gui/widgets/BasicBlockWidget.hxx |  8 ++--
 2 files changed, 35 insertions(+), 36 deletions(-)

diff --git a/src/gui/widgets/BasicBlockWidget.cxx b/src/gui/widgets/BasicBlockWidget.cxx
index 5dc27ce..eccb679 100644
--- a/src/gui/widgets/BasicBlockWidget.cxx
+++ b/src/gui/widgets/BasicBlockWidget.cxx
@@ -4,14 +4,14 @@
 BasicBlockWidget::BasicBlockWidget(const QString& name, BasicBlock * block,
                                    Mainwindow * mainwindow)
 	: width(270), height(45)
-	, _proxy(this), name(name)
+	, _widget("", this)
+	, _table(NULL), name(name)
 	, block(block), mainwindow(mainwindow) {
 	next[0] = NULL;	next[1] = NULL;
-	_widget.setStyleSheet("QWidget { background-color : #ddddff; }");
-	_widget.setLayout(&_layout);
-	_layout.setContentsMargins(0, 0, 0, 0);
-	_proxy.setWidget(&_widget);
-	_proxy.setPos(5, 20);
+	_widget.setTextInteractionFlags(Qt::TextSelectableByMouse|
+	                                Qt::LinksAccessibleByMouse);
+
+	_widget.setPos(5, 20);
 
 	if (width < 250) width = 250;
 }
@@ -19,6 +19,18 @@ BasicBlockWidget::BasicBlockWidget(const QString& name, BasicBlock * block,
 void BasicBlockWidget::addItem(uint8_t* bytes, size_t num_bytes,
                                QString line, const QString& href) {
 	QString bytestring;
+	int row;
+
+	if (_table) {
+		row = _table->rows();
+		_table->appendRows(1);
+	} else {
+		row = 0;
+		QTextTableFormat format;
+		format.setBorderStyle(QTextFrameFormat::BorderStyle_None);
+		format.setBorder(0);
+		_table = _widget.textCursor().insertTable(1, 3, format);
+	}
 
 	for (size_t i(0); i < num_bytes; ++i) {
 		const char * hexdigits = "0123456789ABCDEF";
@@ -27,38 +39,25 @@ void BasicBlockWidget::addItem(uint8_t* bytes, size_t num_bytes,
 		bytestring += ' ';
 	}
 
-	int current_row = _layout.rowCount();
-	QLabel * bytestring_label = new QLabel(bytestring);
-	bytestring_label->setTextInteractionFlags(Qt::TextSelectableByMouse|
-	                                          Qt::LinksAccessibleByMouse);
-	bytestring_label->setWordWrap(false);
-	_layout.addWidget(bytestring_label, current_row, 0);
-	bytestring_label->setVisible(true);
+	_table->cellAt(row, 0).firstCursorPosition().insertText(bytestring);
 
 	line = line.replace('\t', ' ').toHtmlEscaped();
 	if (href != "") {
 		line = "<a href=\"" + href + "\">" + line + "</a>";
 	}
-	QLabel * instruction_label = new QLabel(line);
-	instruction_label->setTextInteractionFlags(Qt::TextSelectableByMouse|
-	                                           Qt::LinksAccessibleByMouse);
-	instruction_label->setWordWrap(false);
-	instruction_label->setFocusPolicy(Qt::StrongFocus);
-	if (href != "") {
-		QObject::connect(instruction_label, &QLabel::linkActivated,
-		                 [=](QString str) {
-			                 if (str.startsWith("function:")) {
-					                 QString address = str.remove("function:");
-					                 mainwindow->switchMainPlaneToAddress(address.toInt(NULL, 16));
-				                 }
-		                 });
-	}
-	_layout.addWidget(instruction_label, current_row, 1);
-	instruction_label->setVisible(true);
 
-	width = 12 + _widget.childrenRect().width();
-	height = 25 + _widget.childrenRect().height();
+	_table->cellAt(row, 1).firstCursorPosition().insertHtml(line);
+
+	QObject::connect(&_widget, &QGraphicsTextItem::linkActivated,
+	                 [=](QString str) {
+		                 if (str.startsWith("function:")) {
+			                 QString address = str.remove("function:");
+			                 mainwindow->switchMainPlaneToAddress(address.toInt(NULL, 16));
+		                 }
+	                 });
+
+	width = 10 + _widget.boundingRect().width();
+	height = 25 + _widget.boundingRect().height();
 
 	if (width < 250) width = 250;
-	_widget.resize(width - 12, height - 25);
 }
diff --git a/src/gui/widgets/BasicBlockWidget.hxx b/src/gui/widgets/BasicBlockWidget.hxx
index c351c3a..8ee33a5 100644
--- a/src/gui/widgets/BasicBlockWidget.hxx
+++ b/src/gui/widgets/BasicBlockWidget.hxx
@@ -10,8 +10,9 @@
 
 class Mainwindow;
 
-class BasicBlockWidget : public QGraphicsItem
+class BasicBlockWidget : public QObject, public QGraphicsItem
 {
+	Q_OBJECT
 public:
 	BasicBlockWidget(const QString& name, BasicBlock * block, Mainwindow * mainwindow);
 
@@ -65,9 +66,8 @@ public:
 	}
 private:
 	uint32_t width, height;
-	QGraphicsProxyWidget _proxy;
-	QGridLayout _layout;
-	QLabel _widget;
+	QGraphicsTextItem _widget;
+	QTextTable* _table;
 	QString name;
 	BasicBlock * block;
 	Mainwindow * mainwindow;
-- 
2.39.2