TimeItem: Made paint_label a mandatory field

[pulseview.git] / pv / view / cursorpair.cpp

diff --git a/pv/view/cursorpair.cpp b/pv/view/cursorpair.cpp
index 5ce398a0ff3f764e9b0e6d6914bf9f258254bce0..2ff32c53ef9fbbe4d46b2d1d8fb22425ee03626f 100644 (file)
--- a/pv/view/cursorpair.cpp
+++ b/pv/view/cursorpair.cpp
@@ -18,49 +18,129 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
-#include "cursorpair.h"
+#include "cursorpair.hpp"
 
-#include "view.h"
+#include "view.hpp"
+#include "pv/util.hpp"
 
+#include <cassert>
 #include <algorithm>
 
-using namespace std;
+using std::max;
+using std::make_pair;
+using std::min;
+using std::shared_ptr;
+using std::pair;
 
 namespace pv {
 namespace view {
 
-CursorPair::CursorPair(const View &view) :
-       _first(view, 0.0, _second),
-       _second(view, 1.0, _first),
-       _view(view)
+const int CursorPair::DeltaPadding = 8;
+
+CursorPair::CursorPair(View &view) :
+       TimeItem(view),
+       first_(new Cursor(view, 0.0)),
+       second_(new Cursor(view, 1.0))
+{
+}
+
+bool CursorPair::enabled() const
+{
+       return view_.cursors_shown();
+}
+
+shared_ptr<Cursor> CursorPair::first() const
 {
+       return first_;
 }
 
-const Cursor& CursorPair::first() const
+shared_ptr<Cursor> CursorPair::second() const
 {
-       return _first;
+       return second_;
 }
 
-Cursor& CursorPair::first()
+void CursorPair::set_time(double time) {
+       const double delta = second_->time() - first_->time();
+       first_->set_time(time);
+       second_->set_time(time + delta);
+}
+
+float CursorPair::get_x() const
 {
-       return _first;
+       return (first_->get_x() + second_->get_x()) / 2.0f;
 }
 
-const Cursor& CursorPair::second() const
+QPoint CursorPair::point() const
 {
-       return _second;
+       return first_->point();
 }
 
-Cursor& CursorPair::second()
+pv::widgets::Popup* CursorPair::create_popup(QWidget *parent)
 {
-       return _second;
+       (void)parent;
+       return nullptr;
 }
 
-void CursorPair::draw_markers(QPainter &p,
-       const QRect &rect, unsigned int prefix)
+QRectF CursorPair::label_rect(const QRectF &rect) const
 {
-       _first.paint_label(p, rect, prefix);
-       _second.paint_label(p, rect, prefix);
+       const QSizeF label_size(
+               text_size_.width() + View::LabelPadding.width() * 2,
+               text_size_.height() + View::LabelPadding.height() * 2);
+       const pair<float, float> offsets(get_cursor_offsets());
+       const pair<float, float> normal_offsets(
+               (offsets.first < offsets.second) ? offsets :
+               make_pair(offsets.second, offsets.first));
+
+       const float height = label_size.height();
+       const float left = max(normal_offsets.first + DeltaPadding, -height);
+       const float right = min(normal_offsets.second - DeltaPadding,
+               (float)rect.width() + height);
+
+       return QRectF(left, rect.height() - label_size.height() -
+               TimeMarker::ArrowSize - TimeMarker::Offset - 0.5f,
+               right - left, height);
+}
+
+void CursorPair::paint_label(QPainter &p, const QRect &rect)
+{
+       assert(first_);
+       assert(second_);
+
+       const unsigned int prefix = view_.tick_prefix();
+
+       compute_text_size(p, prefix);
+       QRectF delta_rect(label_rect(rect));
+
+       const int radius = delta_rect.height() / 2;
+       const QRectF text_rect(delta_rect.intersected(
+               rect).adjusted(radius, 0, -radius, 0));
+       if(text_rect.width() >= text_size_.width())
+       {
+               const int highlight_radius = delta_rect.height() / 2 - 2;
+
+               if (selected()) {
+                       p.setBrush(Qt::transparent);
+                       p.setPen(highlight_pen());
+                       p.drawRoundedRect(delta_rect, radius, radius);
+               }
+
+               p.setBrush(Cursor::FillColour);
+               p.setPen(Cursor::FillColour.darker());
+               p.drawRoundedRect(delta_rect, radius, radius);
+
+               delta_rect.adjust(1, 1, -1, -1);
+               p.setPen(Cursor::FillColour.lighter());
+               p.drawRoundedRect(delta_rect, highlight_radius, highlight_radius);
+
+               p.setPen(SelectableItem::select_text_colour(
+                       Cursor::FillColour));
+               p.drawText(text_rect, Qt::AlignCenter | Qt::AlignVCenter,
+                       pv::util::format_time(second_->time() - first_->time(), prefix, 2));
+       }
+
+       // Paint the cursor markers
+       first_->paint_label(p, rect);
+       second_->paint_label(p, rect);
 }
 
 void CursorPair::draw_viewport_background(QPainter &p,
@@ -81,15 +161,30 @@ void CursorPair::draw_viewport_background(QPainter &p,
 void CursorPair::draw_viewport_foreground(QPainter &p,
        const QRect &rect)
 {
-       _first.paint(p, rect);
-       _second.paint(p, rect);
+       assert(first_);
+       assert(second_);
+
+       first_->paint(p, rect);
+       second_->paint(p, rect);
+}
+
+void CursorPair::compute_text_size(QPainter &p, unsigned int prefix)
+{
+       assert(first_);
+       assert(second_);
+
+       text_size_ = p.boundingRect(QRectF(), 0, pv::util::format_time(
+               second_->time() - first_->time(), prefix, 2)).size();
 }
 
 pair<float, float> CursorPair::get_cursor_offsets() const
 {
+       assert(first_);
+       assert(second_);
+
        return pair<float, float>(
-               (_first.time() - _view.offset()) / _view.scale(),
-               (_second.time() - _view.offset()) / _view.scale());
+               (first_->time() - view_.offset()) / view_.scale(),
+               (second_->time() - view_.offset()) / view_.scale());
 }
 
 } // namespace view