/*
- * 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>
*
#include "view.h"
#include "viewport.h"
-#include "../../sigsession.h"
-#include "../../signal.h"
-
-#include "../../extdef.h"
+#include "signal.h"
+#include "../sigsession.h"
#include <QMouseEvent>
-#include <QTextStream>
-
-#include <math.h>
#include <boost/foreach.hpp>
namespace pv {
namespace view {
-const int Viewport::MinorTickSubdivision = 4;
-const int Viewport::ScaleUnits[3] = {1, 2, 5};
-
-const QString Viewport::SIPrefixes[9] =
- {"f", "p", "n", QChar(0x03BC), "m", "", "k", "M", "G"};
-const int Viewport::FirstSIPrefixPower = -15;
-
Viewport::Viewport(View &parent) :
- QGLWidget(&parent),
+ QWidget(&parent),
_view(parent)
{
setMouseTracking(true);
- setAutoFillBackground(false);
+ setAutoFillBackground(true);
+ setBackgroundRole(QPalette::Base);
+
+ connect(&_view, SIGNAL(signals_moved()),
+ this, SLOT(on_signals_moved()));
}
int Viewport::get_total_height() const
{
- int height = 0;
- BOOST_FOREACH(const shared_ptr<Signal> s,
- _view.session().get_signals()) {
+ int h = 0;
+ const vector< shared_ptr<Signal> > sigs(
+ _view.session().get_signals());
+ BOOST_FOREACH(const shared_ptr<Signal> s, sigs) {
assert(s);
- height += View::SignalHeight;
+ h = max(s->get_v_offset() + View::SignalHeight, h);
}
- return height;
-}
-
-void Viewport::initializeGL()
-{
-}
-
-void Viewport::resizeGL(int width, int height)
-{
- setup_viewport(width, height);
+ return h;
}
-void Viewport::paintEvent(QPaintEvent *event)
+void Viewport::paintEvent(QPaintEvent*)
{
- int offset;
-
- const vector< shared_ptr<Signal> > &sigs =
- _view.session().get_signals();
-
- // Prepare for OpenGL rendering
- makeCurrent();
- glMatrixMode(GL_MODELVIEW);
- glPushMatrix();
+ const vector< shared_ptr<Signal> > sigs(
+ _view.session().get_signals());
- setup_viewport(width(), height());
+ QPainter p(this);
+ p.setRenderHint(QPainter::Antialiasing);
- qglClearColor(Qt::white);
- glClear(GL_COLOR_BUFFER_BIT);
+ if (_view.cursors_shown())
+ _view.cursors().draw_viewport_background(p, rect());
// Plot the signal
- glEnable(GL_SCISSOR_TEST);
- glScissor(0, 0, width(), height());
- offset = View::RulerHeight - _view.v_offset();
+ const int v_offset = _view.v_offset();
BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
{
assert(s);
-
- const QRect signal_rect(0, offset,
- width(), View::SignalHeight);
-
- s->paint(*this, signal_rect, _view.scale(), _view.offset());
-
- offset += View::SignalHeight;
+ s->paint(p, s->get_v_offset() - v_offset, 0, width(),
+ _view.scale(), _view.offset());
}
- glDisable(GL_SCISSOR_TEST);
-
- // Prepare for QPainter rendering
- glMatrixMode(GL_MODELVIEW);
- glPopMatrix();
-
- QPainter painter(this);
- painter.setRenderHint(QPainter::Antialiasing);
+ if (_view.cursors_shown())
+ _view.cursors().draw_viewport_foreground(p, rect());
- // Paint the ruler
- paint_ruler(painter);
-
- painter.end();
+ p.end();
}
void Viewport::mousePressEvent(QMouseEvent *event)
{
assert(event);
- if(event->buttons() & Qt::LeftButton)
+ if (event->buttons() & Qt::LeftButton)
{
_view.set_scale_offset(_view.scale(),
_mouse_down_offset +
}
}
-void Viewport::mouseReleaseEvent(QMouseEvent *event)
-{
- assert(event);
-}
-
void Viewport::wheelEvent(QWheelEvent *event)
{
assert(event);
- _view.zoom(event->delta() / 120, event->x());
-}
-void Viewport::setup_viewport(int width, int height)
-{
- glViewport(0, 0, (GLint)width, (GLint)height);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glOrtho(0, width, height, 0, -1, 1);
- glMatrixMode(GL_MODELVIEW);
+ if (event->orientation() == Qt::Vertical) {
+ // Vertical scrolling is interpreted as zooming in/out
+ _view.zoom(event->delta() / 120, event->x());
+ } else if (event->orientation() == Qt::Horizontal) {
+ // Horizontal scrolling is interpreted as moving left/right
+ _view.set_scale_offset(_view.scale(),
+ event->delta() * _view.scale()
+ + _view.offset());
+ }
}
-void Viewport::paint_ruler(QPainter &p)
+void Viewport::on_signals_moved()
{
- 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 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 / order_decimal) << SIPrefixes[prefix] << "s";
- p.drawText(x, 0, 0, text_height, Qt::AlignCenter | Qt::AlignTop |
- Qt::TextDontClip, s);
- p.drawLine(x, text_height, x, View::RulerHeight);
- }
- else
- {
- // Draw a minor tick
- p.drawLine(x,
- (text_height + View::RulerHeight) / 2, x,
- View::RulerHeight);
- }
-
- division++;
- }
+ update();
}
} // namespace view
projects / pulseview.git / blobdiff