Cache signal label text size at draw time for later use

[pulseview.git] / pv / view / header.cpp

diff --git a/pv/view/header.cpp b/pv/view/header.cpp
index bf003a4bf4926e7b6916668991701507bb4d7321..8fe9d485b761c5874625836b1aa469669bf135ba 100644 (file)
--- a/pv/view/header.cpp
+++ b/pv/view/header.cpp
@@ -1,5 +1,5 @@
 /*
- * This file is part of the sigrok project.
+ * This file is part of the PulseView project.
  *
  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
  *
@@ -21,13 +21,14 @@
 #include "header.h"
 #include "view.h"
 
-#include "../../signal.h"
-#include "../../sigsession.h"
+#include "../signal.h"
+#include "../sigsession.h"
 
 #include <assert.h>
 
 #include <boost/foreach.hpp>
 
+#include <QMouseEvent>
 #include <QPainter>
 #include <QRect>
 
@@ -41,6 +42,7 @@ Header::Header(View &parent) :
        QWidget(&parent),
        _view(parent)
 {
+       setMouseTracking(true);
 }
 
 void Header::paintEvent(QPaintEvent *event)
@@ -57,8 +59,11 @@ void Header::paintEvent(QPaintEvent *event)
        {
                assert(s);
 
-               const QRect label_rect(0, offset, w, View::SignalHeight);
-               s->paint_label(painter, label_rect);
+               const QRect signal_heading_rect(
+                       0, offset, w, View::SignalHeight);
+
+               s->paint_label(painter, signal_heading_rect,
+                       s->pt_in_label_rect(signal_heading_rect, _mouse_point));
 
                offset += View::SignalHeight;
        }
@@ -66,5 +71,18 @@ void Header::paintEvent(QPaintEvent *event)
        painter.end();
 }
 
+void Header::mouseMoveEvent(QMouseEvent *event)
+{
+       assert(event);
+       _mouse_point = event->pos();
+       update();
+}
+
+void Header::leaveEvent(QEvent *event)
+{
+       _mouse_point = QPoint(-1, -1);
+       update();
+}
+
 } // namespace view
 } // namespace pv