Added tango style highlights to labels

[pulseview.git] / sigview.cpp

diff --git a/sigview.cpp b/sigview.cpp
index ac7e76c8fe5185bd7fcd33bd75b7957ecb70e086..cf0983d90ba2b0cefbb798f1edcc9dda697f4f39 100644 (file)
--- a/sigview.cpp
+++ b/sigview.cpp
@@ -20,7 +20,137 @@
 
 #include "sigview.h"
 
-SigView::SigView(QWidget *parent) :
-       QAbstractScrollArea(parent)
+#include "sigsession.h"
+#include "signal.h"
+
+#include <QMouseEvent>
+
+#include <boost/foreach.hpp>
+
+using namespace boost;
+using namespace std;
+
+const int SigView::SignalHeight = 50;
+const int SigView::LabelMarginWidth = 70;
+
+SigView::SigView(SigSession &session, QWidget *parent) :
+       QGLWidget(parent),
+        _session(session),
+       _scale(1e-6),
+       _offset(0)
+{
+       connect(&_session, SIGNAL(dataUpdated()),
+               this, SLOT(dataUpdated()));
+
+       setMouseTracking(true);
+       setAutoFillBackground(false);
+}
+
+void SigView::initializeGL()
+{
+}
+
+void SigView::resizeGL(int width, int height)
+{
+       setupViewport(width, height);
+}
+
+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 = 0;
+       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 label
+       offset = 0;
+       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;
+       }
+
+       painter.end();
+}
+
+void SigView::dataUpdated()
+{
+       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);
 }