From 512bfc565937c0c1b07ec0e6486831526a6e1eee Mon Sep 17 00:00:00 2001
From: Jens Steinhauser <jens.steinhauser@gmail.com>
Date: Sat, 24 May 2014 17:36:17 +0200
Subject: [PATCH] Header: Do not clip away the selection.

---
 pv/view/header.cpp | 11 ++++++++---
 pv/view/header.h   |  6 ++++++
 pv/view/view.cpp   |  8 +++++---
 3 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/pv/view/header.cpp b/pv/view/header.cpp
index 87effd3d..2e497761 100644
--- a/pv/view/header.cpp
+++ b/pv/view/header.cpp
@@ -44,6 +44,7 @@ namespace pv {
 namespace view {
 
 const int Header::Padding = 12;
+const int Header::BaselineOffset = 5;
 
 Header::Header(View &parent) :
 	MarginWidget(parent),
@@ -76,7 +77,7 @@ QSize Header::sizeHint() const
 		}
 	}
 
-	return QSize(max_width + Padding, 0);
+	return QSize(max_width + Padding + BaselineOffset, 0);
 }
 
 shared_ptr<Trace> Header::get_mouse_over_trace(const QPoint &pt)
@@ -107,7 +108,10 @@ void Header::clear_selection()
 
 void Header::paintEvent(QPaintEvent*)
 {
-	const int w = width();
+	// The trace labels are not drawn with the arrows exactly on the
+	// left edge of the widget, because then the selection shadow
+	// would be clipped away.
+	const int w = width() - BaselineOffset;
 	const vector< shared_ptr<Trace> > traces(_view.get_traces());
 
 	QPainter painter(this);
@@ -188,9 +192,10 @@ void Header::mouseReleaseEvent(QMouseEvent *event)
 			const shared_ptr<Trace> mouse_over_trace =
 				get_mouse_over_trace(event->pos());
 			if (mouse_over_trace) {
+				const int w = width() - BaselineOffset;
 				Popup *const p =
 					mouse_over_trace->create_popup(&_view);
-				p->set_position(mapToGlobal(QPoint(width(),
+				p->set_position(mapToGlobal(QPoint(w,
 					mouse_over_trace->get_y())),
 					Popup::Right);
 				p->show();
diff --git a/pv/view/header.h b/pv/view/header.h
index 641f203b..eed1d1e1 100644
--- a/pv/view/header.h
+++ b/pv/view/header.h
@@ -45,6 +45,12 @@ public:
 
 	QSize sizeHint() const;
 
+	/**
+	 * The horizontal offset, relative to the left edge of the widget,
+	 * where the arrows of the trace labels end.
+	 */
+	static const int BaselineOffset;
+
 private:
 	std::shared_ptr<pv::view::Trace> get_mouse_over_trace(
 		const QPoint &pt);
diff --git a/pv/view/view.cpp b/pv/view/view.cpp
index 6c7df488..392114c8 100644
--- a/pv/view/view.cpp
+++ b/pv/view/view.cpp
@@ -128,8 +128,9 @@ View::View(SigSession &session, QWidget *parent) :
 	// which were created before this object came into being
 	signals_changed();
 
-	// make sure the cursorheader is over the ruler
+	// make sure the transparent widgets are on the top
 	_cursorheader->raise();
+	_header->raise();
 }
 
 SigSession& View::session()
@@ -412,7 +413,8 @@ void View::update_scroll()
 
 void View::update_layout()
 {
-	setViewportMargins(_header->sizeHint().width(),
+	setViewportMargins(
+		_header->sizeHint().width() - pv::view::Header::BaselineOffset,
 		_ruler->sizeHint().height(), 0, 0);
 	_ruler->setGeometry(_viewport->x(), 0,
 		_viewport->width(), _viewport->y());
@@ -421,7 +423,7 @@ void View::update_layout()
 		_ruler->sizeHint().height() - _cursorheader->sizeHint().height() / 2,
 		_viewport->width(), _cursorheader->sizeHint().height());
 	_header->setGeometry(0, _viewport->y(),
-		_viewport->x(), _viewport->height());
+		_header->sizeHint().width(), _viewport->height());
 	update_scroll();
 }
 
-- 
2.30.2