* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <assert.h>
+#include <math.h>
+
+#include <boost/foreach.hpp>
+
+#include <QEvent>
+#include <QScrollBar>
+
#include "sigview.h"
+#include "logicdata.h"
+#include "logicdatasnapshot.h"
#include "sigsession.h"
-#include "signal.h"
-
-#include <boost/foreach.hpp>
+#include "sigviewport.h"
using namespace boost;
using namespace std;
-const int SigView::SignalHeight = 50;
+const double SigView::MaxScale = 1e9;
+const double SigView::MinScale = 1e-15;
+
+const int SigView::LabelMarginWidth = 70;
+const int SigView::RulerHeight = 30;
SigView::SigView(SigSession &session, QWidget *parent) :
- QGLWidget(parent),
- _session(session),
- _scale(1000000000ULL),
- _offset(0)
+ QAbstractScrollArea(parent),
+ _session(session),
+ _viewport(new SigViewport(*this)),
+ _data_length(0),
+ _scale(1e-6),
+ _offset(0),
+ _v_offset(0)
+{
+ connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
+ this, SLOT(h_scroll_value_changed(int)));
+ connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
+ this, SLOT(v_scroll_value_changed(int)));
+ connect(&_session, SIGNAL(data_updated()),
+ this, SLOT(data_updated()));
+ setViewport(_viewport);
+}
+
+double SigView::scale() const
+{
+ return _scale;
+}
+
+double SigView::offset() const
+{
+ return _offset;
+}
+
+int SigView::v_offset() const
+{
+ return _v_offset;
+}
+
+void SigView::zoom(double steps)
{
- connect(&_session, SIGNAL(dataUpdated()),
- this, SLOT(dataUpdated()));
+ zoom(steps, (width() - LabelMarginWidth) / 2);
+}
- setMouseTracking(true);
+void SigView::set_scale_offset(double scale, double offset)
+{
+ _scale = scale;
+ _offset = offset;
+ update_scroll();
+ _viewport->update();
}
-void SigView::initializeGL()
+void SigView::update_scroll()
{
- 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);
+ assert(_viewport);
+
+ const QSize areaSize = _viewport->size();
+
+ // Set the horizontal scroll bar
+ double length = 0, offset = 0;
+ const shared_ptr<SignalData> sig_data = _session.get_data();
+ if(sig_data) {
+ length = _data_length /
+ (sig_data->get_samplerate() * _scale);
+ offset = _offset / _scale;
+ }
+
+ horizontalScrollBar()->setPageStep(areaSize.width());
+ horizontalScrollBar()->setRange(0,
+ max((int)(length - areaSize.width()), 0));
+ horizontalScrollBar()->setSliderPosition(offset);
+
+ // Set the vertical scrollbar
+ verticalScrollBar()->setPageStep(areaSize.height());
+ verticalScrollBar()->setRange(0,
+ _viewport->get_total_height() - areaSize.height());
}
-void SigView::resizeGL(int width, int height)
+void SigView::zoom(double steps, int offset)
{
- glViewport(0, 0, (GLint)width, (GLint)height);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glOrtho(0, width, height, 0, -1, 1);
- glMatrixMode(GL_MODELVIEW);
+ const double cursor_offset = _offset + _scale * offset;
+ _scale *= pow(3.0/2.0, -steps);
+ _scale = max(min(_scale, MaxScale), MinScale);
+ _offset = cursor_offset - _scale * offset;
+ _viewport->update();
+ update_scroll();
}
-void SigView::paintGL()
+bool SigView::viewportEvent(QEvent *e)
{
- glClear(GL_COLOR_BUFFER_BIT);
-
- QRect rect(0, 0, width(), SignalHeight);
- const vector< shared_ptr<Signal> > &sigs =
- _session.get_signals();
- BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
- {
- assert(s);
- s->paint(*this, rect, _scale, _offset);
- rect.translate(0, SignalHeight);
+ switch(e->type()) {
+ case QEvent::Paint:
+ case QEvent::MouseButtonPress:
+ case QEvent::MouseButtonRelease:
+ case QEvent::MouseButtonDblClick:
+ case QEvent::MouseMove:
+ case QEvent::Wheel:
+ return false;
+
+ default:
+ return QAbstractScrollArea::viewportEvent(e);
}
}
-void SigView::dataUpdated()
+void SigView::resizeEvent(QResizeEvent *e)
{
- update();
+ update_scroll();
}
+void SigView::h_scroll_value_changed(int value)
+{
+ _offset = _scale * value;
+ _viewport->update();
+}
+
+void SigView::v_scroll_value_changed(int value)
+{
+ _v_offset = value;
+ _viewport->update();
+}
+
+void SigView::data_updated()
+{
+ // Get the new data length
+ _data_length = 0;
+ shared_ptr<LogicData> sig_data = _session.get_data();
+ if(sig_data) {
+ deque< shared_ptr<LogicDataSnapshot> > &snapshots =
+ sig_data->get_snapshots();
+ BOOST_FOREACH(shared_ptr<LogicDataSnapshot> s, snapshots)
+ if(s)
+ _data_length = max(_data_length,
+ s->get_sample_count());
+ }
+
+ // Update the scroll bars
+ update_scroll();
+
+ // Repaint the view
+ _viewport->update();
+}