|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2012 Digia Plc
|
|
|
** All rights reserved.
|
|
|
** For any questions to Digia, please use contact form at http://qt.digia.com
|
|
|
**
|
|
|
** This file is part of the Qt Commercial Charts Add-on.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE$
|
|
|
** Licensees holding valid Qt Commercial licenses may use this file in
|
|
|
** accordance with the Qt Commercial License Agreement provided with the
|
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
|
** a written agreement between you and Digia.
|
|
|
**
|
|
|
** If you have questions regarding the use of this file, please use
|
|
|
** contact form at http://qt.digia.com
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#include "splinechartitem_p.h"
|
|
|
#include "qsplineseries_p.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "chartanimator_p.h"
|
|
|
#include <QPainter>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
SplineChartItem::SplineChartItem(QSplineSeries *series, ChartPresenter *presenter) :
|
|
|
XYChartItem(series, presenter),
|
|
|
m_series(series),
|
|
|
m_pointsVisible(false)
|
|
|
{
|
|
|
setZValue(ChartPresenter::LineChartZValue);
|
|
|
QObject::connect(m_series->d_func(),SIGNAL(updated()),this,SLOT(handleUpdated()));
|
|
|
handleUpdated();
|
|
|
}
|
|
|
|
|
|
QRectF SplineChartItem::boundingRect() const
|
|
|
{
|
|
|
return m_rect;
|
|
|
}
|
|
|
|
|
|
QPainterPath SplineChartItem::shape() const
|
|
|
{
|
|
|
return m_path;
|
|
|
}
|
|
|
|
|
|
void SplineChartItem::updateLayout(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints,int index)
|
|
|
{
|
|
|
QVector<QPointF> controlPoints;
|
|
|
|
|
|
controlPoints.resize(newPoints.count()*2-2);
|
|
|
|
|
|
for (int i = 0; i < newPoints.size() - 1; i++) {
|
|
|
controlPoints[2*i] = calculateGeometryControlPoint(2 * i);
|
|
|
controlPoints[2 * i + 1] = calculateGeometryControlPoint(2 * i + 1);
|
|
|
}
|
|
|
|
|
|
if (controlPoints.count()<2) {
|
|
|
setLayout(newPoints,controlPoints);
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
if (animator()) {
|
|
|
animator()->updateLayout(this,oldPoints,newPoints,m_controlPoints,controlPoints,index);
|
|
|
} else {
|
|
|
setLayout(newPoints,controlPoints);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
QPointF SplineChartItem::calculateGeometryControlPoint(int index) const
|
|
|
{
|
|
|
return XYChartItem::calculateGeometryPoint(m_series->controlPoint(index));
|
|
|
}
|
|
|
|
|
|
void SplineChartItem::setLayout(QVector<QPointF> &points)
|
|
|
{
|
|
|
// Dummy implementation because of a bug in Clang compiler
|
|
|
XYChartItem::setLayout(points);
|
|
|
}
|
|
|
|
|
|
void SplineChartItem::setLayout(QVector<QPointF> &points, QVector<QPointF> &controlPoints)
|
|
|
{
|
|
|
if ((points.size()<2) || (controlPoints.size()<2)) {
|
|
|
XYChartItem::setLayout(points);
|
|
|
m_controlPoints=controlPoints;
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
Q_ASSERT(points.count()*2-2 == controlPoints.count());
|
|
|
|
|
|
QPainterPath splinePath(points.at(0));
|
|
|
|
|
|
for (int i = 0; i < points.size() - 1; i++) {
|
|
|
const QPointF& point = points.at(i + 1);
|
|
|
splinePath.cubicTo(controlPoints[2*i],controlPoints[2 * i + 1],point);
|
|
|
}
|
|
|
|
|
|
prepareGeometryChange();
|
|
|
m_path = splinePath;
|
|
|
m_rect = splinePath.boundingRect();
|
|
|
XYChartItem::setLayout(points);
|
|
|
m_controlPoints=controlPoints;
|
|
|
}
|
|
|
|
|
|
//handlers
|
|
|
|
|
|
void SplineChartItem::handleUpdated()
|
|
|
{
|
|
|
m_pointsVisible = m_series->pointsVisible();
|
|
|
m_linePen = m_series->pen();
|
|
|
m_pointPen = m_series->pen();
|
|
|
m_pointPen.setWidthF(2*m_pointPen.width());
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
//painter
|
|
|
|
|
|
void SplineChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
|
|
|
{
|
|
|
Q_UNUSED(widget)
|
|
|
Q_UNUSED(option)
|
|
|
|
|
|
painter->save();
|
|
|
painter->setClipRect(clipRect());
|
|
|
painter->setPen(m_linePen);
|
|
|
painter->drawPath(m_path);
|
|
|
if (m_pointsVisible) {
|
|
|
painter->setPen(m_pointPen);
|
|
|
painter->drawPoints(points());
|
|
|
}
|
|
|
painter->restore();
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#include "moc_splinechartitem_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
