Added Cursor class

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4f8665f7d753f8a1618045460e12ed991ba806bf..ee79db217e61c8dafa65b09e8de12bb0184f6991 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -90,6 +90,7 @@ set(pulseview_SOURCES
        pv/signaldata.cpp
        pv/sigsession.cpp
        pv/signal.cpp
+       pv/view/cursor.cpp
        pv/view/header.cpp
        pv/view/ruler.cpp
        pv/view/timemarker.cpp

diff --git a/pv/view/cursor.cpp b/pv/view/cursor.cpp
new file mode 100644 (file)
index 0000000..3ae5f58
--- /dev/null
+++ b/pv/view/cursor.cpp
@@ -0,0 +1,62 @@
+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include "cursor.h"
+
+#include "view.h"
+
+#include <QBrush>
+#include <QPainter>
+#include <QRect>
+#include <QRectF>
+
+namespace pv {
+namespace view {
+
+const QColor Cursor::LineColour(32, 74, 135);
+const QColor Cursor::FillColour(52, 101, 164);
+const QColor Cursor::HighlightColour(83, 130, 186);
+const QColor Cursor::TextColour(Qt::white);
+
+const int Cursor::Size = 12;
+const int Cursor::Offset = 1;
+
+Cursor::Cursor(const View &view, double time) :
+       TimeMarker(view, LineColour, time)
+{
+}
+
+void Cursor::paint_label(QPainter &p, const QRect &rect)
+{
+       const float x = (_time - _view.offset()) / _view.scale();
+       const QRectF r(x - Size/2, rect.height() - Size - Offset,
+               Size, Size);
+
+       p.setPen(LineColour);
+       p.setBrush(QBrush(FillColour));
+       p.drawEllipse(r);
+
+       p.setPen(HighlightColour);
+       p.setBrush(QBrush());
+       p.drawEllipse(r.adjusted(1, 1, -1, -1));
+}
+
+} // namespace view
+} // namespace pv

diff --git a/pv/view/cursor.h b/pv/view/cursor.h
new file mode 100644 (file)
index 0000000..a982c05
--- /dev/null
+++ b/pv/view/cursor.h
@@ -0,0 +1,59 @@
+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#ifndef PULSEVIEW_PV_VIEW_CURSOR_H
+#define PULSEVIEW_PV_VIEW_CURSOR_H
+
+#include "timemarker.h"
+
+namespace pv {
+namespace view {
+
+class Cursor : public TimeMarker
+{
+private:
+       static const QColor LineColour;
+       static const QColor FillColour;
+       static const QColor HighlightColour;
+
+       static const int Size;
+       static const int Offset;
+
+public:
+       /**
+        * Constructor.
+        * @param colour A reference to the colour of this cursor.
+        * @param time The time to set the flag to.
+        */
+       Cursor(const View &view, double time);
+
+public:
+       /**
+        * Paints the cursor's label to the ruler.
+        * @param p The painter to draw with.
+        * @param rect The rectangle of the ruler client area.
+        */
+       void paint_label(QPainter &p, const QRect &rect);
+};
+
+} // namespace view
+} // namespace pv
+
+#endif // PULSEVIEW_PV_VIEW_CURSOR_H
\ No newline at end of file