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#include "ruleritem.h"
#include <QFont>
#include <QFontMetrics>
#include <QPainter>
#include <QGraphicsScene>
#include <stdint.h>
#include "profile.h"
#include "display.h"
RulerNodeItem2::RulerNodeItem2() : entry(NULL) , ruler(NULL)
{
setRect(QRect(QPoint(-8,8),QPoint(8,-8)));
setBrush(QColor(0xff, 0, 0, 127));
setPen(QColor("#FF0000"));
setFlag(QGraphicsItem::ItemIsMovable);
setFlag(ItemSendsGeometryChanges);
setFlag(ItemIgnoresTransformations);
}
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), y());
} 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();
if (ruler != NULL)
ruler->recalculate();
if (scene()) {
scene()->update();
}
}
return QGraphicsEllipseItem::itemChange(change, value);
}
RulerItem2::RulerItem2():
pInfo(NULL),
timeAxis(NULL),
depthAxis(NULL),
source(new RulerNodeItem2()),
dest(new RulerNodeItem2())
{
source->setRuler(this);
dest->setRuler(this);
}
void RulerItem2::recalculate()
{
char buffer[500];
QPointF tmp;
QFont font;
QFontMetrics fm(font);
if (timeAxis == NULL || depthAxis == NULL || pInfo == NULL)
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);
compare_samples(source->entry, dest->entry, buffer, 500, 1);
text = QString(buffer);
QRect r = fm.boundingRect(QRect(QPoint(10,-1*INT_MAX), QPoint(line.length()-10, 0)), Qt::TextWordWrap, text);
if (r.height() < 10)
height = 10;
else
height = r.height();
QLineF line_n = line.normalVector();
line_n.setLength(height);
if (scene()) {
/* Determine whether we draw down or upwards */
if (scene()->sceneRect().contains(line_n.p2()) &&
scene()->sceneRect().contains(endPoint+QPointF(line_n.dx(),line_n.dy())))
paint_direction = -1;
else
paint_direction = 1;
}
}
RulerNodeItem2 *RulerItem2::sourceNode() const
{
return source;
}
RulerNodeItem2 *RulerItem2::destNode() const
{
return dest;
}
void RulerItem2::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option);
Q_UNUSED(widget);
QLineF line(startPoint, endPoint);
QLineF line_n = line.normalVector();
painter->setPen(QColor(Qt::black));
painter->setBrush(Qt::NoBrush);
line_n.setLength(height);
if (paint_direction == 1)
line_n.setAngle(line_n.angle()+180);
painter->drawLine(line);
painter->drawLine(line_n);
painter->drawLine(line_n.p1() + QPointF(line.dx(), line.dy()), line_n.p2() + QPointF(line.dx(), line.dy()));
//Draw Text
painter->save();
painter->translate(startPoint.x(), startPoint.y());
painter->rotate(line.angle()*-1);
if (paint_direction == 1)
painter->translate(0, height);
painter->setPen(Qt::black);
painter->drawText(QRectF(QPointF(10,-1*height), QPointF(line.length()-10, 0)), Qt::TextWordWrap, text);
painter->restore();
}
QRectF RulerItem2::boundingRect() const
{
return shape().controlPointRect();
}
QPainterPath RulerItem2::shape() const
{
QPainterPath path;
QLineF line(startPoint, endPoint);
QLineF line_n = line.normalVector();
line_n.setLength(height);
if (paint_direction == 1)
line_n.setAngle(line_n.angle()+180);
path.moveTo(startPoint);
path.lineTo(line_n.p2());
path.lineTo(line_n.p2() + QPointF(line.dx(), line.dy()));
path.lineTo(endPoint);
path.lineTo(startPoint);
return path;
}
void RulerItem2::setPlotInfo(plot_info* info)
{
pInfo = info;
dest->pInfo = info;
source->pInfo = info;
recalculate();
}
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