]> sigrok.org Git - pulseview.git/blobdiff - pv/view/ruler.cpp
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 4649b10..0000000
+++ /dev/null
@@ -1,242 +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 "cursor.h"
-#include "view.h"
-#include "viewport.h"
-
-#include <extdef.h>
-
-#include <assert.h>
-#include <math.h>
-#include <limits.h>
-
-#include <QMouseEvent>
-#include <QPainter>
-#include <QTextStream>
-
-using namespace std;
-
-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;
-
-const int Ruler::HoverArrowSize = 5;
-
-Ruler::Ruler(View &parent) :
-       QWidget(&parent),
-       _view(parent),
-       _grabbed_marker(NULL)
-{
-       setMouseTracking(true);
-
-       connect(&_view, SIGNAL(hover_point_changed()),
-               this, SLOT(hover_point_changed()));
-}
-
-void Ruler::paintEvent(QPaintEvent*)
-{
-       using namespace Qt;
-
-       const double SpacingIncrement = 32.0f;
-       const double MinValueSpacing = 32.0f;
-       const int ValueMargin = 3;
-
-       QPainter p(this);
-       p.setRenderHint(QPainter::Antialiasing);
-
-       double min_width = SpacingIncrement, typical_width;
-       double tick_period;
-       unsigned int prefix;
-       double multiplier;
-
-       // Find tick spacing, and number formatting that does not cause
-       // value to collide.
-       do
-       {
-               const double min_period = _view.scale() * min_width;
-
-               const int order = (int)floorf(log10f(min_period));
-               const double order_decimal = pow(10, order);
-
-               unsigned int unit = 0;
-
-               do
-               {
-                       tick_period = order_decimal * ScaleUnits[unit++];
-               } while (tick_period < min_period && unit < countof(ScaleUnits));
-
-               prefix = (order - FirstSIPrefixPower) / 3;
-               assert(prefix < countof(SIPrefixes));
-
-               multiplier = pow(10.0, - prefix * 3 - FirstSIPrefixPower);
-
-               typical_width = p.boundingRect(0, 0, INT_MAX, INT_MAX,
-                       AlignLeft | AlignTop, format_time(_view.offset(),
-                       multiplier, prefix)).width() + MinValueSpacing;
-
-               min_width += SpacingIncrement;
-
-       } while(typical_width > tick_period / _view.scale());
-
-       const int text_height = p.boundingRect(0, 0, INT_MAX, INT_MAX,
-               AlignLeft | AlignTop, "8").height();
-
-       // Draw the tick marks
-       p.setPen(palette().color(foregroundRole()));
-
-       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);
-
-       const int major_tick_y1 = text_height + ValueMargin * 2;
-       const int tick_y2 = height();
-       const int minor_tick_y1 = (major_tick_y1 + tick_y2) / 2;
-
-       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
-                       p.drawText(x, ValueMargin, 0, text_height,
-                               AlignCenter | AlignTop | TextDontClip,
-                               format_time(t, multiplier, prefix));
-                       p.drawLine(QPointF(x, major_tick_y1),
-                               QPointF(x, tick_y2));
-               }
-               else
-               {
-                       // Draw a minor tick
-                       p.drawLine(QPointF(x, minor_tick_y1),
-                               QPointF(x, tick_y2));
-               }
-
-               division++;
-       }
-
-       // Draw the cursors
-       draw_cursors(p);
-
-       // Draw the hover mark
-       draw_hover_mark(p);
-
-       p.end();
-}
-
-void Ruler::mouseMoveEvent(QMouseEvent *e)
-{
-       if (!_grabbed_marker)
-               return;
-
-       _grabbed_marker->set_time(_view.offset() +
-               ((double)e->x() + 0.5) * _view.scale());
-}
-
-void Ruler::mousePressEvent(QMouseEvent *e)
-{
-       if (e->buttons() & Qt::LeftButton) {
-               _grabbed_marker = NULL;
-
-               if (_view.cursors_shown()) {
-                       std::pair<Cursor, Cursor> &cursors =
-                               _view.cursors();
-                       if (cursors.first.get_label_rect(
-                               rect()).contains(e->pos()))
-                               _grabbed_marker = &cursors.first;
-                       else if (cursors.second.get_label_rect(
-                               rect()).contains(e->pos()))
-                               _grabbed_marker = &cursors.second;
-               }
-       }
-}
-
-void Ruler::mouseReleaseEvent(QMouseEvent *)
-{
-       _grabbed_marker = NULL;
-}
-
-QString Ruler::format_time(double t, double multiplier,
-       unsigned int prefix)
-{
-       QString s;
-       QTextStream ts(&s);
-       ts.setRealNumberPrecision(0);
-       ts << fixed << forcesign << (t  * multiplier) <<
-               SIPrefixes[prefix] << "s";
-       return s;
-}
-
-void Ruler::draw_cursors(QPainter &p)
-{
-       if (!_view.cursors_shown())
-               return;
-
-       const QRect r = rect();
-       pair<Cursor, Cursor> &cursors = _view.cursors();
-       cursors.first.paint_label(p, r);
-       cursors.second.paint_label(p, r);
-}
-
-void Ruler::draw_hover_mark(QPainter &p)
-{
-       const int x = _view.hover_point().x();
-
-       if (x == -1 || _grabbed_marker)
-               return;
-
-       p.setPen(QPen(Qt::NoPen));
-       p.setBrush(QBrush(QColor(Qt::black)));
-
-       const int b = height() - 1;
-       const QPointF points[] = {
-               QPointF(x, b),
-               QPointF(x - HoverArrowSize, b - HoverArrowSize),
-               QPointF(x + HoverArrowSize, b - HoverArrowSize)
-       };
-       p.drawPolygon(points, countof(points));
-}
-
-void Ruler::hover_point_changed()
-{
-       update();
-}
-
-} // namespace view
-} // namespace pv