]> sigrok.org Git - pulseview.git/blobdiff - pv/view/viewport.cpp
RowItemPaintParams: Bundled scale and offset
[pulseview.git] / pv / view / viewport.cpp
index 9f60c1a82ad123897d93b4a6b3360045ffa074ea..f5f0ab59fb2f949caf1bef931b506d0d859b185a 100644 (file)
  */
 
 #include <cassert>
+#include <cmath>
+#include <algorithm>
 
-#include "view.h"
-#include "viewport.h"
+#include "rowitempaintparams.hpp"
+#include "signal.hpp"
+#include "view.hpp"
+#include "viewport.hpp"
 
-#include "signal.h"
-#include "../sigsession.h"
+#include <pv/session.hpp>
 
 #include <QMouseEvent>
 
+using std::abs;
 using std::max;
 using std::min;
 using std::shared_ptr;
+using std::stable_sort;
 using std::vector;
 
 namespace pv {
@@ -38,9 +43,9 @@ namespace view {
 
 Viewport::Viewport(View &parent) :
        QWidget(&parent),
-        _view(parent),
-       _mouse_down_valid(false),
-       _pinch_zoom_active(false)
+       view_(parent),
+       mouse_down_valid_(false),
+       pinch_zoom_active_(false)
 {
        setAttribute(Qt::WA_AcceptTouchEvents, true);
 
@@ -48,61 +53,47 @@ Viewport::Viewport(View &parent) :
        setAutoFillBackground(true);
        setBackgroundRole(QPalette::Base);
 
-       connect(&_view.session(), SIGNAL(signals_changed()),
-               this, SLOT(on_signals_changed()));
-
-       connect(&_view, SIGNAL(signals_moved()),
+       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<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<Trace> > traces(_view.get_traces());
+       vector< shared_ptr<RowItem> > row_items(view_.begin(), view_.end());
+       stable_sort(row_items.begin(), row_items.end(),
+               [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) {
+                       return a->visual_v_offset() < b->visual_v_offset(); });
 
        QPainter p(this);
        p.setRenderHint(QPainter::Antialiasing);
 
-       if (_view.cursors_shown())
-               _view.cursors().draw_viewport_background(p, rect());
+       if (view_.cursors_shown())
+               view_.cursors().draw_viewport_background(p, rect());
+
+       const RowItemPaintParams pp(0, width(), view_.scale(), view_.offset());
 
        // Plot the signal
-       for (const shared_ptr<Trace> t : traces)
+       for (const shared_ptr<RowItem> r : row_items)
        {
-               assert(t);
-               t->paint_back(p, 0, width());
+               assert(r);
+               r->paint_back(p, pp);
        }
 
-       for (const shared_ptr<Trace> t : traces)
-               t->paint_mid(p, 0, width());
+       for (const shared_ptr<RowItem> r : row_items)
+               r->paint_mid(p, pp);
 
-       for (const shared_ptr<Trace> t : traces)
-               t->paint_fore(p, 0, width());
+       for (const shared_ptr<RowItem> r : row_items)
+               r->paint_fore(p, pp);
 
-       if (_view.cursors_shown())
-               _view.cursors().draw_viewport_foreground(p, rect());
+       if (view_.cursors_shown())
+               view_.cursors().draw_viewport_foreground(p, rect());
 
        p.end();
 }
 
 bool Viewport::event(QEvent *event)
 {
-       switch(event->type()) {
+       switch (event->type()) {
        case QEvent::TouchBegin:
        case QEvent::TouchUpdate:
        case QEvent::TouchEnd:
@@ -121,11 +112,10 @@ void Viewport::mousePressEvent(QMouseEvent *event)
 {
        assert(event);
 
-       if (event->button() == Qt::LeftButton)
-       {
-               _mouse_down_point = event->pos();
-               _mouse_down_offset = _view.offset();
-               _mouse_down_valid = true;
+       if (event->button() == Qt::LeftButton) {
+               mouse_down_point_ = event->pos();
+               mouse_down_offset_ = view_.offset();
+               mouse_down_valid_ = true;
        }
 }
 
@@ -134,27 +124,24 @@ void Viewport::mouseReleaseEvent(QMouseEvent *event)
        assert(event);
 
        if (event->button() == Qt::LeftButton)
-       {
-               _mouse_down_valid = false;
-       }
+               mouse_down_valid_ = false;
 }
 
 void Viewport::mouseMoveEvent(QMouseEvent *event)
 {
        assert(event);
 
-       if (event->buttons() & Qt::LeftButton)
-       {
-               if (! _mouse_down_valid) {
-                       _mouse_down_point = event->pos();
-                       _mouse_down_offset = _view.offset();
-                       _mouse_down_valid = true;
+       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() *
-                       _view.scale());
+               view_.set_scale_offset(view_.scale(),
+                       mouse_down_offset_ +
+                       (mouse_down_point_ - event->pos()).x() *
+                       view_.scale());
        }
 }
 
@@ -163,9 +150,9 @@ void Viewport::mouseDoubleClickEvent(QMouseEvent *event)
        assert(event);
 
        if (event->buttons() & Qt::LeftButton)
-               _view.zoom(2.0, event->x());
+               view_.zoom(2.0, event->x());
        else if (event->buttons() & Qt::RightButton)
-               _view.zoom(-2.0, event->x());
+               view_.zoom(-2.0, event->x());
 }
 
 void Viewport::wheelEvent(QWheelEvent *event)
@@ -174,12 +161,12 @@ void Viewport::wheelEvent(QWheelEvent *event)
 
        if (event->orientation() == Qt::Vertical) {
                // Vertical scrolling is interpreted as zooming in/out
-               _view.zoom(event->delta() / 120, event->x());
+               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());
+               view_.set_scale_offset(view_.scale(),
+                                      event->delta() * view_.scale()
+                                      + view_.offset());
        }
 }
 
@@ -188,58 +175,48 @@ bool Viewport::touchEvent(QTouchEvent *event)
        QList<QTouchEvent::TouchPoint> touchPoints = event->touchPoints();
 
        if (touchPoints.count() != 2) {
-               _pinch_zoom_active = false;
+               pinch_zoom_active_ = false;
                return false;
        }
 
        const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first();
        const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last();
 
-       if (!_pinch_zoom_active ||
+       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;
+               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;
+               double scale = (pinch_offset1_ - pinch_offset0_) / w;
                if (scale < 0)
                        scale = -scale;
-               double offset = _pinch_offset0 - touchPoint0.pos().x() * scale;
+               double offset = pinch_offset0_ - touchPoint0.pos().x() * scale;
                if (scale > 0)
-                       _view.set_scale_offset(scale, offset);
+                       view_.set_scale_offset(scale, offset);
        }
 
        if (event->touchPointStates() & Qt::TouchPointReleased) {
-               _pinch_zoom_active = false;
+               pinch_zoom_active_ = false;
 
                if (touchPoint0.state() & Qt::TouchPointReleased) {
                        // Primary touch released
-                       _mouse_down_valid = false;
+                       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;
+                       mouse_down_point_ = touchPoint0.pos().toPoint();
+                       mouse_down_offset_ = view_.offset();
+                       mouse_down_valid_ = true;
                }
        }
 
        return true;
 }
 
-void Viewport::on_signals_changed()
-{
-       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()
 {
        update();