|
|
/****************************************************************************
|
|
|
**
|
|
|
** 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 "xychartitem_p.h"
|
|
|
#include "qxyseries.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "chartanimator_p.h"
|
|
|
#include <QPainter>
|
|
|
#include <QGraphicsSceneMouseEvent>
|
|
|
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
//TODO: optimize : remove points which are not visible
|
|
|
|
|
|
XYChartItem::XYChartItem(QXYSeries *series, ChartPresenter *presenter):ChartItem(presenter),
|
|
|
m_minX(0),
|
|
|
m_maxX(0),
|
|
|
m_minY(0),
|
|
|
m_maxY(0),
|
|
|
m_series(series)
|
|
|
{
|
|
|
connect(series,SIGNAL(pointReplaced(int)),this,SLOT(handlePointReplaced(int)));
|
|
|
connect(series,SIGNAL(pointAdded(int)),this,SLOT(handlePointAdded(int)));
|
|
|
connect(series,SIGNAL(pointRemoved(int)),this,SLOT(handlePointRemoved(int)));
|
|
|
connect(this,SIGNAL(clicked(const QPointF&)),series,SIGNAL(clicked(const QPointF&)));
|
|
|
}
|
|
|
|
|
|
QPointF XYChartItem::calculateGeometryPoint(const QPointF &point) const
|
|
|
{
|
|
|
const qreal deltaX = m_size.width()/(m_maxX-m_minX);
|
|
|
const qreal deltaY = m_size.height()/(m_maxY-m_minY);
|
|
|
qreal x = (point.x() - m_minX)* deltaX;
|
|
|
qreal y = (point.y() - m_minY)*-deltaY + m_size.height();
|
|
|
return QPointF(x,y);
|
|
|
}
|
|
|
|
|
|
|
|
|
QPointF XYChartItem::calculateGeometryPoint(int index) const
|
|
|
{
|
|
|
const qreal deltaX = m_size.width()/(m_maxX-m_minX);
|
|
|
const qreal deltaY = m_size.height()/(m_maxY-m_minY);
|
|
|
qreal x = (m_series->x(index) - m_minX)* deltaX;
|
|
|
qreal y = (m_series->y(index) - m_minY)*-deltaY + m_size.height();
|
|
|
return QPointF(x,y);
|
|
|
}
|
|
|
|
|
|
QVector<QPointF> XYChartItem::calculateGeometryPoints() const
|
|
|
{
|
|
|
const qreal deltaX = m_size.width()/(m_maxX-m_minX);
|
|
|
const qreal deltaY = m_size.height()/(m_maxY-m_minY);
|
|
|
|
|
|
QVector<QPointF> points;
|
|
|
points.reserve(m_series->count());
|
|
|
for (int i = 0; i < m_series->count(); ++i) {
|
|
|
qreal x = (m_series->x(i) - m_minX)* deltaX;
|
|
|
qreal y = (m_series->y(i) - m_minY)*-deltaY + m_size.height();
|
|
|
points << QPointF(x,y);
|
|
|
}
|
|
|
return points;
|
|
|
}
|
|
|
|
|
|
QPointF XYChartItem::calculateDomainPoint(const QPointF &point) const
|
|
|
{
|
|
|
const qreal deltaX = m_size.width()/(m_maxX-m_minX);
|
|
|
const qreal deltaY = m_size.height()/(m_maxY-m_minY);
|
|
|
qreal x = point.x()/deltaX +m_minX;
|
|
|
qreal y = (point.y()-m_size.height())/(-deltaY)+ m_minY;
|
|
|
return QPointF(x,y);
|
|
|
}
|
|
|
|
|
|
void XYChartItem::updateLayout(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints,int index)
|
|
|
{
|
|
|
if (animator()) {
|
|
|
animator()->updateLayout(this,oldPoints,newPoints,index);
|
|
|
} else {
|
|
|
setLayout(newPoints);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void XYChartItem::setLayout(QVector<QPointF> &points)
|
|
|
{
|
|
|
m_points = points;
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
//handlers
|
|
|
|
|
|
void XYChartItem::handlePointAdded(int index)
|
|
|
{
|
|
|
QVector<QPointF> points = m_points;
|
|
|
QPointF point;
|
|
|
if (m_series->model()) {
|
|
|
point = calculateGeometryPoint(index - m_series->mapFirst());
|
|
|
points.insert(index - m_series->mapFirst(), point);
|
|
|
updateLayout(m_points, points, index - m_series->mapFirst());
|
|
|
}
|
|
|
else {
|
|
|
// this checks do not work correctly if model is set
|
|
|
Q_ASSERT(index<m_series->count());
|
|
|
Q_ASSERT(index>=0);
|
|
|
point = calculateGeometryPoint(index);
|
|
|
points.insert(index, point);
|
|
|
updateLayout(m_points, points, index);
|
|
|
}
|
|
|
update();
|
|
|
}
|
|
|
void XYChartItem::handlePointRemoved(int index)
|
|
|
{
|
|
|
QVector<QPointF> points = m_points;
|
|
|
if (m_series->model()) {
|
|
|
if (index < m_series->mapFirst())
|
|
|
points.remove(0);
|
|
|
else
|
|
|
points.remove(index - m_series->mapFirst());
|
|
|
updateLayout(m_points, points, index - m_series->mapFirst());
|
|
|
}
|
|
|
else {
|
|
|
// this checks do not work correctly if model is set
|
|
|
Q_ASSERT(index<m_series->count() + 1);
|
|
|
Q_ASSERT(index>=0);
|
|
|
points.remove(index);
|
|
|
updateLayout(m_points, points, index);
|
|
|
}
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
void XYChartItem::handlePointReplaced(int index)
|
|
|
{
|
|
|
Q_ASSERT(index<m_series->count());
|
|
|
Q_ASSERT(index>=0);
|
|
|
QPointF point = calculateGeometryPoint(index);
|
|
|
QVector<QPointF> points = m_points;
|
|
|
points.replace(index,point);
|
|
|
updateLayout(m_points,points,index);
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
void XYChartItem::handleDomainChanged(qreal minX, qreal maxX, qreal minY, qreal maxY)
|
|
|
{
|
|
|
m_minX=minX;
|
|
|
m_maxX=maxX;
|
|
|
m_minY=minY;
|
|
|
m_maxY=maxY;
|
|
|
|
|
|
if (isEmpty()) return;
|
|
|
QVector<QPointF> points = calculateGeometryPoints();
|
|
|
updateLayout(m_points,points);
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
void XYChartItem::handleGeometryChanged(const QRectF &rect)
|
|
|
{
|
|
|
Q_ASSERT(rect.isValid());
|
|
|
m_size=rect.size();
|
|
|
m_clipRect=rect.translated(-rect.topLeft());
|
|
|
setPos(rect.topLeft());
|
|
|
|
|
|
if (isEmpty()) return;
|
|
|
QVector<QPointF> points = calculateGeometryPoints();
|
|
|
updateLayout(m_points,points);
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
|
|
|
bool XYChartItem::isEmpty()
|
|
|
{
|
|
|
return !m_clipRect.isValid() || qFuzzyIsNull(m_maxX - m_minX) || qFuzzyIsNull(m_maxY - m_minY);
|
|
|
}
|
|
|
|
|
|
void XYChartItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
|
|
|
{
|
|
|
emit clicked(calculateDomainPoint(event->pos()));
|
|
|
}
|
|
|
|
|
|
#include "moc_xychartitem_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
