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#include "ruleritem.h"
#include "divetextitem.h"
#include <QFont>
#include <QFontMetrics>
#include <QPainter>
#include <QGraphicsScene>
#include <QGraphicsView>
#include <QDebug>
#include <stdint.h>
#include "profile.h"
#include "display.h"
RulerNodeItem2::RulerNodeItem2() : entry(NULL), ruler(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;
}
}
QVariant RulerNodeItem2::itemChange(GraphicsItemChange change, const QVariant &value)
{
if (change == ItemPositionHasChanged) {
recalculate();
ruler->recalculate();
}
return QGraphicsEllipseItem::itemChange(change, value);
}
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));
}
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();
}
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