TimeItem: Added new class - a base of TimeMarker, derived from SelectableItem

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

diff --git a/pv/view/timemarker.cpp b/pv/view/timemarker.cpp
index 5196613bd443e375bcd8030b1116003ed4bd3fda..34b2699bd6722fe9b5f3b169266f3341eb3eabad 100644 (file)
--- a/pv/view/timemarker.cpp
+++ b/pv/view/timemarker.cpp
@@ -18,20 +18,32 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+#include <algorithm>
+
+#include <extdef.h>
+
 #include "timemarker.hpp"
 
 #include "view.hpp"
 
+#include <QApplication>
 #include <QFormLayout>
+#include <QFontMetrics>
 #include <QPainter>
 
 #include <pv/widgets/popup.hpp>
 
+using std::max;
+using std::min;
+
 namespace pv {
 namespace view {
 
+const int TimeMarker::ArrowSize = 4;
+const int TimeMarker::Offset = 1;
+
 TimeMarker::TimeMarker(View &view, const QColor &colour, double time) :
-       view_(view),
+       TimeItem(view),
        colour_(colour),
        time_(time),
        value_action_(NULL),
@@ -71,10 +83,81 @@ void TimeMarker::set_time(double time)
 void TimeMarker::paint(QPainter &p, const QRect &rect)
 {
        const float x = get_x();
-       p.setPen(colour_);
+       p.setPen(colour_.darker());
        p.drawLine(QPointF(x, rect.top()), QPointF(x, rect.bottom()));
 }
 
+QRectF TimeMarker::get_label_rect(const QRect &rect) const
+{
+       const float x = (time_ - view_.offset()) / view_.scale();
+
+       QFontMetrics m(QApplication::font());
+       const float text_width =
+               max(m.boundingRect(get_text()).size().width(), ArrowSize);
+       const float text_height = m.boundingRect("Tg").size().height();
+
+       const QSizeF label_size(
+               text_width + View::LabelPadding.width() * 2,
+               text_height + View::LabelPadding.height() * 2);
+       const float top = rect.height() - label_size.height() -
+               TimeMarker::Offset - TimeMarker::ArrowSize - 0.5f;
+       const float height = label_size.height();
+
+       return QRectF(x - label_size.width() / 2, top,
+               label_size.width(), height);
+}
+
+void TimeMarker::paint_label(QPainter &p, const QRect &rect)
+{
+       if (!enabled())
+               return;
+
+       const qreal x = (time_ - view_.offset()) / view_.scale();
+       const QRectF r(get_label_rect(rect));
+
+       const QPointF points[] = {
+               r.topLeft(),
+               r.bottomLeft(),
+               QPointF(max(r.left(), x - ArrowSize), r.bottom()),
+               QPointF(x, rect.bottom()),
+               QPointF(min(r.right(), x + ArrowSize), r.bottom()),
+               r.bottomRight(),
+               r.topRight()
+       };
+
+       const QPointF highlight_points[] = {
+               QPointF(r.left() + 1, r.top() + 1),
+               QPointF(r.left() + 1, r.bottom() - 1),
+               QPointF(max(r.left() + 1, x - ArrowSize), r.bottom() - 1),
+               QPointF(min(max(r.left() + 1, x), r.right() - 1),
+                       rect.bottom() - 1),
+               QPointF(min(r.right() - 1, x + ArrowSize), r.bottom() - 1),
+               QPointF(r.right() - 1, r.bottom() - 1),
+               QPointF(r.right() - 1, r.top() + 1),
+       };
+
+       if (selected()) {
+               p.setPen(highlight_pen());
+               p.setBrush(Qt::transparent);
+               p.drawPolygon(points, countof(points));
+       }
+
+       p.setPen(Qt::transparent);
+       p.setBrush(colour_);
+       p.drawPolygon(points, countof(points));
+
+       p.setPen(colour_.lighter());
+       p.setBrush(Qt::transparent);
+       p.drawPolygon(highlight_points, countof(highlight_points));
+
+       p.setPen(colour_.darker());
+       p.setBrush(Qt::transparent);
+       p.drawPolygon(points, countof(points));
+
+       p.setPen(select_text_colour(colour_));
+       p.drawText(r, Qt::AlignCenter | Qt::AlignVCenter, get_text());
+}
+
 pv::widgets::Popup* TimeMarker::create_popup(QWidget *parent)
 {
        using pv::widgets::Popup;
@@ -87,6 +170,7 @@ pv::widgets::Popup* TimeMarker::create_popup(QWidget *parent)
        value_widget_->setDecimals(9);
        value_widget_->setSuffix("s");
        value_widget_->setSingleStep(1e-6);
+       value_widget_->setRange(-1.0e9, 1.0e9);
        value_widget_->setValue(time_);
 
        connect(value_widget_, SIGNAL(valueChanged(double)),