#include "sigview.h"
#include "sigsession.h"
+#include "signal.h"
+
+#include "extdef.h"
+
+#include <QMouseEvent>
+
+#include <math.h>
+
+#include <boost/foreach.hpp>
+
+using namespace boost;
+using namespace std;
+
+const int SigView::SignalHeight = 50;
+const int SigView::LabelMarginWidth = 70;
+const int SigView::RulerHeight = 30;
+
+const int SigView::ScaleUnits[3] = {1, 2, 5};
SigView::SigView(SigSession &session, QWidget *parent) :
QGLWidget(parent),
- _session(session)
+ _session(session),
+ _scale(1e-6),
+ _offset(0)
{
connect(&_session, SIGNAL(dataUpdated()),
this, SLOT(dataUpdated()));
setMouseTracking(true);
+ setAutoFillBackground(false);
}
void SigView::initializeGL()
{
- glDisable(GL_TEXTURE_2D);
- glDisable(GL_DEPTH_TEST);
- glDisable(GL_COLOR_MATERIAL);
- glEnable(GL_BLEND);
- glEnable(GL_POLYGON_SMOOTH);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- glClearColor(1.0, 1.0, 1.0, 0);
}
void SigView::resizeGL(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);
+ setupViewport(width, height);
}
-void SigView::paintGL()
+void SigView::paintEvent(QPaintEvent *event)
{
+ int offset;
+
+ const vector< shared_ptr<Signal> > &sigs =
+ _session.get_signals();
+
+ // Prepare for OpenGL rendering
+ makeCurrent();
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+
+ setupViewport(width(), height());
+
+ qglClearColor(Qt::white);
glClear(GL_COLOR_BUFFER_BIT);
+
+ // Plot the signal
+ offset = RulerHeight;
+ BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
+ {
+ assert(s);
+
+ const QRect signal_rect(LabelMarginWidth, offset,
+ width() - LabelMarginWidth, SignalHeight);
+
+ s->paint(*this, signal_rect, _scale, _offset);
+
+ offset += SignalHeight;
+ }
+
+ // Prepare for QPainter rendering
+ glMatrixMode(GL_MODELVIEW);
+ glPopMatrix();
+
+ QPainter painter(this);
+ painter.setRenderHint(QPainter::Antialiasing);
+
+ // Paint the labels
+ offset = RulerHeight;
+ BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
+ {
+ assert(s);
+
+ const QRect label_rect(0, offset,
+ LabelMarginWidth, SignalHeight);
+ s->paint_label(painter, label_rect);
+
+ offset += SignalHeight;
+ }
+
+ // Paint the ruler
+ paintRuler(painter);
+
+ painter.end();
}
void SigView::dataUpdated()
{
- printf("Data Updated\n");
+ update();
}
+void SigView::mouseMoveEvent(QMouseEvent *event)
+{
+ assert(event);
+}
+
+void SigView::mousePressEvent(QMouseEvent *event)
+{
+ assert(event);
+}
+
+void SigView::mouseReleaseEvent(QMouseEvent *event)
+{
+ assert(event);
+
+ const double cursor_offset = _offset + _scale * (double)event->x();
+
+ switch(event->button())
+ {
+ case Qt::LeftButton:
+ _scale *= 2.0 / 3.0;
+ break;
+
+ case Qt::RightButton:
+ _scale *= 3.0 / 2.0;
+ break;
+ }
+
+ _offset = cursor_offset - _scale * (double)event->x();
+
+ update();
+}
+
+void SigView::setupViewport(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);
+}
+
+void SigView::paintRuler(QPainter &p)
+{
+ const double MinSpacing = 20;
+
+ double tick_period = 0.0f;
+ const double min_period = _scale * MinSpacing;
+
+ double order = 10e-15;
+ while(tick_period < min_period)
+ {
+ int unit = 0;
+ while(tick_period < min_period &&
+ unit < countof(ScaleUnits))
+ tick_period = order * ScaleUnits[unit++];
+ order *= 10;
+ }
+
+ const double tick_seperation = tick_period / _scale;
+
+ p.setPen(Qt::transparent);
+ p.setBrush(QColor(0xC0, 0xC0, 0xC0));
+ p.drawRect(LabelMarginWidth, 0,
+ width() - LabelMarginWidth, RulerHeight);
+
+ p.setPen(Qt::black);
+
+ const double offset_ticks = -_offset / tick_period;
+ double x = (offset_ticks - floor(offset_ticks)) *
+ tick_seperation + LabelMarginWidth;
+ while(x < width())
+ {
+ p.drawLine(x, 0, x, RulerHeight);
+ x += tick_seperation;
+ }
+}