Session: Fix issue #67 by improving error handling

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

diff --git a/pv/view/ruler.cpp b/pv/view/ruler.cpp
deleted file mode 100644 (file)
index a2e280b..0000000
--- a/pv/view/ruler.cpp
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * 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 "ruler.h"
-#include "view.h"
-
-#include <extdef.h>
-
-#include <assert.h>
-#include <math.h>
-
-#include <QPainter>
-#include <QTextStream>
-
-namespace pv {
-namespace view {
-
-const int Ruler::MinorTickSubdivision = 4;
-const int Ruler::ScaleUnits[3] = {1, 2, 5};
-
-const QString Ruler::SIPrefixes[9] =
-       {"f", "p", "n", QChar(0x03BC), "m", "", "k", "M", "G"};
-const int Ruler::FirstSIPrefixPower = -15;
-
-Ruler::Ruler(View &parent) :
-       QWidget(&parent),
-       _view(parent)
-{
-}
-
-void Ruler::paintEvent(QPaintEvent *event)
-{
-       QPainter p(this);
-
-       const double MinSpacing = 80;
-
-       const double min_period = _view.scale() * MinSpacing;
-
-       const int order = (int)floorf(log10f(min_period));
-       const double order_decimal = pow(10, order);
-
-       int unit = 0;
-       double tick_period = 0.0f;
-
-       do
-       {
-               tick_period = order_decimal * ScaleUnits[unit++];
-       } while(tick_period < min_period && unit < countof(ScaleUnits));
-
-       const int prefix = (order - FirstSIPrefixPower) / 3;
-       assert(prefix >= 0);
-       assert(prefix < countof(SIPrefixes));
-
-       const double multiplier = pow(0.1, prefix * 3 + FirstSIPrefixPower);
-
-       const int text_height = p.boundingRect(0, 0, INT_MAX, INT_MAX,
-               Qt::AlignLeft | Qt::AlignTop, "8").height();
-
-       // Draw the tick marks
-       p.setPen(Qt::black);
-
-       const double minor_tick_period = tick_period / MinorTickSubdivision;
-       const double first_major_division =
-               floor(_view.offset() / tick_period);
-       const double first_minor_division =
-               ceil(_view.offset() / minor_tick_period);
-       const double t0 = first_major_division * tick_period;
-
-       int division = (int)round(first_minor_division -
-               first_major_division * MinorTickSubdivision);
-       while(1)
-       {
-               const double t = t0 + division * minor_tick_period;
-               const double x = (t - _view.offset()) / _view.scale();
-
-               if(x >= width())
-                       break;
-
-               if(division % MinorTickSubdivision == 0)
-               {
-                       // Draw a major tick
-                       QString s;
-                       QTextStream ts(&s);
-                       ts << (t * multiplier) << SIPrefixes[prefix] << "s";
-                       p.drawText(x, 0, 0, text_height, Qt::AlignCenter |
-                               Qt::AlignTop | Qt::TextDontClip, s);
-                       p.drawLine(x, text_height, x, height());
-               }
-               else
-               {
-                       // Draw a minor tick
-                       p.drawLine(x, (text_height + height()) / 2,
-                               x, height());
-               }
-
-               division++;
-       }
-
-       p.end();
-}
-
-} // namespace view
-} // namespace pv