diff options
Diffstat (limited to 'desktop-widgets/profile/ruleritem.cpp')
| -rw-r--r-- | desktop-widgets/profile/ruleritem.cpp | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/desktop-widgets/profile/ruleritem.cpp b/desktop-widgets/profile/ruleritem.cpp new file mode 100644 index 000000000..830985552 --- /dev/null +++ b/desktop-widgets/profile/ruleritem.cpp @@ -0,0 +1,179 @@ +#include "ruleritem.h" +#include "preferences.h" +#include "mainwindow.h" +#include "profilewidget2.h" +#include "display.h" + +#include <qgraphicssceneevent.h> + +#include "profile.h" + +RulerNodeItem2::RulerNodeItem2() : + entry(NULL), + ruler(NULL), + timeAxis(NULL), + depthAxis(NULL) +{ + memset(&pInfo, 0, sizeof(pInfo)); + setRect(-8, -8, 16, 16); + setBrush(QColor(0xff, 0, 0, 127)); + setPen(QColor(Qt::red)); + setFlag(ItemIsMovable); + setFlag(ItemSendsGeometryChanges); + setFlag(ItemIgnoresTransformations); +} + +void RulerNodeItem2::setPlotInfo(plot_info &info) +{ + pInfo = info; + entry = pInfo.entry; +} + +void RulerNodeItem2::setRuler(RulerItem2 *r) +{ + ruler = r; +} + +void RulerNodeItem2::recalculate() +{ + struct plot_data *data = pInfo.entry + (pInfo.nr - 1); + uint16_t count = 0; + if (x() < 0) { + setPos(0, y()); + } else if (x() > timeAxis->posAtValue(data->sec)) { + setPos(timeAxis->posAtValue(data->sec), depthAxis->posAtValue(data->depth)); + } else { + data = pInfo.entry; + count = 0; + while (timeAxis->posAtValue(data->sec) < x() && count < pInfo.nr) { + data = pInfo.entry + count; + count++; + } + setPos(timeAxis->posAtValue(data->sec), depthAxis->posAtValue(data->depth)); + entry = data; + } +} + +void RulerNodeItem2::mouseMoveEvent(QGraphicsSceneMouseEvent *event) +{ + qreal x = event->scenePos().x(); + if (x < 0.0) + x = 0.0; + setPos(x, event->scenePos().y()); + recalculate(); + ruler->recalculate(); +} + +RulerItem2::RulerItem2() : source(new RulerNodeItem2()), + dest(new RulerNodeItem2()), + timeAxis(NULL), + depthAxis(NULL), + textItemBack(new QGraphicsRectItem(this)), + textItem(new QGraphicsSimpleTextItem(this)) +{ + memset(&pInfo, 0, sizeof(pInfo)); + source->setRuler(this); + dest->setRuler(this); + textItem->setFlag(QGraphicsItem::ItemIgnoresTransformations); + textItemBack->setBrush(QColor(0xff, 0xff, 0xff, 190)); + textItemBack->setPen(QColor(Qt::white)); + textItemBack->setFlag(QGraphicsItem::ItemIgnoresTransformations); + setPen(QPen(QColor(Qt::black), 0.0)); + connect(PreferencesDialog::instance(), SIGNAL(settingsChanged()), this, SLOT(settingsChanged())); +} + +void RulerItem2::settingsChanged() +{ + ProfileWidget2 *profWidget = NULL; + if (scene() && scene()->views().count()) + profWidget = qobject_cast<ProfileWidget2 *>(scene()->views().first()); + + if (profWidget && profWidget->currentState == ProfileWidget2::PROFILE) + setVisible(prefs.rulergraph); + else + setVisible(false); +} + +void RulerItem2::recalculate() +{ + char buffer[500]; + QPointF tmp; + QFont font; + QFontMetrics fm(font); + + if (timeAxis == NULL || depthAxis == NULL || pInfo.nr == 0) + return; + + prepareGeometryChange(); + startPoint = mapFromItem(source, 0, 0); + endPoint = mapFromItem(dest, 0, 0); + + if (startPoint.x() > endPoint.x()) { + tmp = endPoint; + endPoint = startPoint; + startPoint = tmp; + } + QLineF line(startPoint, endPoint); + setLine(line); + compare_samples(source->entry, dest->entry, buffer, 500, 1); + text = QString(buffer); + + // draw text + QGraphicsView *view = scene()->views().first(); + QPoint begin = view->mapFromScene(mapToScene(startPoint)); + textItem->setText(text); + qreal tgtX = startPoint.x(); + const qreal diff = begin.x() + textItem->boundingRect().width(); + // clamp so that the text doesn't go out of the screen to the right + if (diff > view->width()) { + begin.setX(begin.x() - (diff - view->width())); + tgtX = mapFromScene(view->mapToScene(begin)).x(); + } + // always show the text bellow the lowest of the start and end points + qreal tgtY = (startPoint.y() >= endPoint.y()) ? startPoint.y() : endPoint.y(); + // this isn't exactly optimal, since we want to scale the 1.0, 4.0 distances as well + textItem->setPos(tgtX - 1.0, tgtY + 4.0); + + // setup the text background + textItemBack->setVisible(startPoint.x() != endPoint.x()); + textItemBack->setPos(textItem->x(), textItem->y()); + textItemBack->setRect(0, 0, textItem->boundingRect().width(), textItem->boundingRect().height()); +} + +RulerNodeItem2 *RulerItem2::sourceNode() const +{ + return source; +} + +RulerNodeItem2 *RulerItem2::destNode() const +{ + return dest; +} + +void RulerItem2::setPlotInfo(plot_info info) +{ + pInfo = info; + dest->setPlotInfo(info); + source->setPlotInfo(info); + dest->recalculate(); + source->recalculate(); + recalculate(); +} + +void RulerItem2::setAxis(DiveCartesianAxis *time, DiveCartesianAxis *depth) +{ + timeAxis = time; + depthAxis = depth; + dest->depthAxis = depth; + dest->timeAxis = time; + source->depthAxis = depth; + source->timeAxis = time; + recalculate(); +} + +void RulerItem2::setVisible(bool visible) +{ + QGraphicsLineItem::setVisible(visible); + source->setVisible(visible); + dest->setVisible(visible); +} |