* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <cassert>
+
#include "view.h"
#include "viewport.h"
#include <QMouseEvent>
-#include <boost/foreach.hpp>
-
-using namespace boost;
-using namespace std;
+using std::abs;
+using std::max;
+using std::min;
+using std::shared_ptr;
+using std::vector;
namespace pv {
namespace view {
Viewport::Viewport(View &parent) :
QWidget(&parent),
- _view(parent)
+ _view(parent),
+ _mouse_down_valid(false),
+ _pinch_zoom_active(false)
{
+ setAttribute(Qt::WA_AcceptTouchEvents, true);
+
setMouseTracking(true);
setAutoFillBackground(true);
setBackgroundRole(QPalette::Base);
+ connect(&_view.session(), SIGNAL(signals_changed()),
+ this, SLOT(on_signals_changed()));
+
connect(&_view, SIGNAL(signals_moved()),
this, SLOT(on_signals_moved()));
+
+ // Trigger the initial event manually. The default device has signals
+ // which were created before this object came into being
+ on_signals_changed();
}
int Viewport::get_total_height() const
{
int h = 0;
- const vector< shared_ptr<Signal> > sigs(
- _view.session().get_signals());
- BOOST_FOREACH(const shared_ptr<Signal> s, sigs) {
- assert(s);
- h = max(s->get_v_offset() + View::SignalHeight, h);
+ const vector< shared_ptr<Trace> > traces(_view.get_traces());
+ for (const shared_ptr<Trace> t : traces) {
+ assert(t);
+ h = max(t->get_v_offset() + View::SignalHeight, h);
}
return h;
void Viewport::paintEvent(QPaintEvent*)
{
- const vector< shared_ptr<Signal> > sigs(
- _view.session().get_signals());
+ const vector< shared_ptr<Trace> > traces(_view.get_traces());
QPainter p(this);
p.setRenderHint(QPainter::Antialiasing);
- draw_cursors_background(p);
+ if (_view.cursors_shown())
+ _view.cursors().draw_viewport_background(p, rect());
// Plot the signal
- const int v_offset = _view.v_offset();
- BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
+ for (const shared_ptr<Trace> t : traces)
{
- assert(s);
+ assert(t);
+ t->paint_back(p, 0, width());
+ }
- const QRect signal_rect(0, s->get_v_offset() - v_offset,
- width(), View::SignalHeight);
+ for (const shared_ptr<Trace> t : traces)
+ t->paint_mid(p, 0, width());
- s->paint(p, signal_rect, _view.scale(), _view.offset());
- }
+ for (const shared_ptr<Trace> t : traces)
+ t->paint_fore(p, 0, width());
- draw_cursors_foreground(p);
+ if (_view.cursors_shown())
+ _view.cursors().draw_viewport_foreground(p, rect());
p.end();
}
+bool Viewport::event(QEvent *event)
+{
+ switch (event->type()) {
+ case QEvent::TouchBegin:
+ case QEvent::TouchUpdate:
+ case QEvent::TouchEnd:
+ if (touchEvent(static_cast<QTouchEvent *>(event)))
+ return true;
+ break;
+
+ default:
+ break;
+ }
+
+ return QWidget::event(event);
+}
+
void Viewport::mousePressEvent(QMouseEvent *event)
{
assert(event);
- _mouse_down_point = event->pos();
- _mouse_down_offset = _view.offset();
+ if (event->button() == Qt::LeftButton) {
+ _mouse_down_point = event->pos();
+ _mouse_down_offset = _view.offset();
+ _mouse_down_valid = true;
+ }
+}
+
+void Viewport::mouseReleaseEvent(QMouseEvent *event)
+{
+ assert(event);
+
+ if (event->button() == Qt::LeftButton)
+ _mouse_down_valid = false;
}
void Viewport::mouseMoveEvent(QMouseEvent *event)
{
assert(event);
- if (event->buttons() & Qt::LeftButton)
- {
+ if (event->buttons() & Qt::LeftButton) {
+ if (!_mouse_down_valid) {
+ _mouse_down_point = event->pos();
+ _mouse_down_offset = _view.offset();
+ _mouse_down_valid = true;
+ }
+
_view.set_scale_offset(_view.scale(),
_mouse_down_offset +
(_mouse_down_point - event->pos()).x() *
}
}
-void Viewport::mouseReleaseEvent(QMouseEvent *event)
+void Viewport::mouseDoubleClickEvent(QMouseEvent *event)
{
assert(event);
+
+ if (event->buttons() & Qt::LeftButton)
+ _view.zoom(2.0, event->x());
+ else if (event->buttons() & Qt::RightButton)
+ _view.zoom(-2.0, event->x());
}
void Viewport::wheelEvent(QWheelEvent *event)
}
}
-void Viewport::draw_cursors_background(QPainter &p)
+bool Viewport::touchEvent(QTouchEvent *event)
{
- if (!_view.cursors_shown())
- return;
+ QList<QTouchEvent::TouchPoint> touchPoints = event->touchPoints();
- p.setPen(Qt::NoPen);
- p.setBrush(QBrush(View::CursorAreaColour));
+ if (touchPoints.count() != 2) {
+ _pinch_zoom_active = false;
+ return false;
+ }
- const pair<Cursor, Cursor> &c = _view.cursors();
- const float x1 = (c.first.time() - _view.offset()) / _view.scale();
- const float x2 = (c.second.time() - _view.offset()) / _view.scale();
- const int l = (int)max(min(x1, x2), 0.0f);
- const int r = (int)min(max(x1, x2), (float)width());
+ const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first();
+ const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last();
- p.drawRect(l, 0, r - l, height());
+ if (!_pinch_zoom_active ||
+ (event->touchPointStates() & Qt::TouchPointPressed)) {
+ _pinch_offset0 = _view.offset() + _view.scale() * touchPoint0.pos().x();
+ _pinch_offset1 = _view.offset() + _view.scale() * touchPoint1.pos().x();
+ _pinch_zoom_active = true;
+ }
+
+ double w = touchPoint1.pos().x() - touchPoint0.pos().x();
+ if (abs(w) >= 1.0) {
+ double scale = (_pinch_offset1 - _pinch_offset0) / w;
+ if (scale < 0)
+ scale = -scale;
+ double offset = _pinch_offset0 - touchPoint0.pos().x() * scale;
+ if (scale > 0)
+ _view.set_scale_offset(scale, offset);
+ }
+
+ if (event->touchPointStates() & Qt::TouchPointReleased) {
+ _pinch_zoom_active = false;
+
+ if (touchPoint0.state() & Qt::TouchPointReleased) {
+ // Primary touch released
+ _mouse_down_valid = false;
+ } else {
+ // Update the mouse down fields so that continued
+ // dragging with the primary touch will work correctly
+ _mouse_down_point = touchPoint0.pos().toPoint();
+ _mouse_down_offset = _view.offset();
+ _mouse_down_valid = true;
+ }
+ }
+
+ return true;
}
-void Viewport::draw_cursors_foreground(QPainter &p)
+void Viewport::on_signals_changed()
{
- if (!_view.cursors_shown())
- return;
-
- const QRect r = rect();
- pair<Cursor, Cursor> &cursors = _view.cursors();
- cursors.first.paint(p, r);
- cursors.second.paint(p, r);
+ const vector< shared_ptr<Trace> > traces(_view.get_traces());
+ for (shared_ptr<Trace> t : traces) {
+ assert(t);
+ connect(t.get(), SIGNAL(visibility_changed()),
+ this, SLOT(update()));
+ }
}
void Viewport::on_signals_moved()
projects / pulseview.git / blobdiff