|
|
#include "xylinechart_p.h"
|
|
|
#include "axis_p.h"
|
|
|
#include "xygrid_p.h"
|
|
|
#include <QPainter>
|
|
|
#include <QStyleOptionGraphicsItem>
|
|
|
#include <QDebug>
|
|
|
|
|
|
QCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
XYLineChart::XYLineChart(QGraphicsItem *parent):QChart(parent),
|
|
|
m_axisX(new Axis(this)),
|
|
|
m_axisY(new Axis(this)),
|
|
|
m_grid(new XYGrid(this,this)),
|
|
|
m_plotDataIndex(0)
|
|
|
{
|
|
|
// set axis
|
|
|
m_axisY->rotate(90);
|
|
|
|
|
|
XYPlotData data;
|
|
|
data.m_minX = 0.0;
|
|
|
data.m_maxX = 100.0;
|
|
|
data.m_minY = 0.0;
|
|
|
data.m_maxY = 100.0;
|
|
|
data.m_ticksX=4;
|
|
|
data.m_ticksY=4;
|
|
|
|
|
|
m_plotDataList.clear();
|
|
|
m_plotDataList << data;
|
|
|
|
|
|
}
|
|
|
|
|
|
void XYLineChart::setSize(const QSizeF& size) {
|
|
|
|
|
|
m_rect = QRect(QPoint(0,0),size.toSize());
|
|
|
m_rect.adjust(margin(),margin(),-margin(),-margin());
|
|
|
updateGeometry();
|
|
|
}
|
|
|
|
|
|
void XYLineChart::addXYSeries(const QXYSeries* series)
|
|
|
{
|
|
|
m_series<<series;
|
|
|
}
|
|
|
|
|
|
QRectF XYLineChart::boundingRect() const
|
|
|
{
|
|
|
return m_rect;
|
|
|
}
|
|
|
|
|
|
void XYLineChart::updateGeometry()
|
|
|
{
|
|
|
//m_axisX->setPos(m_rect.bottomLeft());
|
|
|
//m_axisX->setLength(m_rect.width());
|
|
|
//m_axisY->setLength(m_rect.height());
|
|
|
m_grid->setPos(m_rect.topLeft());
|
|
|
m_grid->setSize(m_rect.size());
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
void XYLineChart::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,QWidget *widget)
|
|
|
{
|
|
|
const XYPlotData& xyplotData = xyPlotData();
|
|
|
|
|
|
if (!m_rect.isValid())
|
|
|
return;
|
|
|
|
|
|
painter->setClipRect(m_rect.adjusted(+1, +1, -1, -1));
|
|
|
|
|
|
const qreal deltaX = (m_rect.width()-1)/xyplotData.spanX();
|
|
|
const qreal deltaY = (m_rect.height()-1)/xyplotData.spanY();
|
|
|
|
|
|
foreach (const QXYSeries* series, m_series) {
|
|
|
|
|
|
QPolygonF polyline(series->count());
|
|
|
|
|
|
for (int j = 0; j < series->count(); ++j) {
|
|
|
qreal dx = series->x(j) - xyplotData.m_minX;
|
|
|
qreal dy = series->y(j) - xyplotData.m_minY;
|
|
|
qreal x = (dx * deltaX) + m_rect.left();
|
|
|
qreal y = - (dy * deltaY) + m_rect.bottom();
|
|
|
polyline[j] = QPointF(x, y);
|
|
|
}
|
|
|
painter->setPen(series->color());
|
|
|
painter->drawPolyline(polyline);
|
|
|
}
|
|
|
}
|
|
|
QCHART_END_NAMESPACE
|
|
|
|
