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Make scatterinteractions compile
Make scatterinteractions compile

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xychartitem.cpp
176 lines | 5.0 KiB | text/x-c | CppLexer
Jani Honkonen
Add license headers
r794 /****************************************************************************
**
** 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
** $QT_END_LICENSE$
**
****************************************************************************/
Michal Klocek
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r466 #include "xychartitem_p.h"
#include "qxyseries.h"
#include "chartpresenter_p.h"
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r530 #include "chartanimator_p.h"
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r466 #include <QPainter>
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r571 #include <QGraphicsSceneMouseEvent>
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r466
QTCOMMERCIALCHART_BEGIN_NAMESPACE
//TODO: optimize : remove points which are not visible
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r743 XYChartItem::XYChartItem(QXYSeries *series, ChartPresenter *presenter):ChartItem(presenter),
m_minX(0),
m_maxX(0),
m_minY(0),
m_maxY(0),
m_series(series)
Michal Klocek
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r466 {
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r743 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&)));
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r466 }
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r743 QPointF XYChartItem::calculateGeometryPoint(const QPointF &point) const
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r466 {
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) {
sauimone
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r743 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);
Michal Klocek
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r466 }
return points;
}
sauimone
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r743 QPointF XYChartItem::calculateDomainPoint(const QPointF &point) const
Michal Klocek
Adds clicked(Point) to lineSeries, changes visible points handling
r544 {
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);
}
sauimone
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r743 void XYChartItem::updateLayout(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints,int index)
Michal Klocek
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r466 {
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r743 if (animator()) {
animator()->updateLayout(this,oldPoints,newPoints,index);
} else {
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r622 setLayout(newPoints);
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r530 }
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r466 }
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r743 void XYChartItem::setLayout(QVector<QPointF> &points)
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r466 {
m_points = points;
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r622 update();
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r466 }
//handlers
void XYChartItem::handlePointAdded(int index)
{
Q_ASSERT(index<m_series->count());
Q_ASSERT(index>=0);
QPointF point = calculateGeometryPoint(index);
QVector<QPointF> points = m_points;
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r622 points.insert(index,point);
updateLayout(m_points,points,index);
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r466 update();
}
void XYChartItem::handlePointRemoved(int index)
{
Marek Rosa
Added support for adding and removing data with model. Updated the example
r545 Q_ASSERT(index<m_series->count() + 1);
Michal Klocek
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r466 Q_ASSERT(index>=0);
QVector<QPointF> points = m_points;
points.remove(index);
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r622 updateLayout(m_points,points,index);
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r466 update();
}
void XYChartItem::handlePointReplaced(int index)
{
Q_ASSERT(index<m_series->count());
Q_ASSERT(index>=0);
QPointF point = calculateGeometryPoint(index);
Michal Klocek
Refactor animation to fit line,spline,scatter...
r476 QVector<QPointF> points = m_points;
Marek Rosa
QXYSeries: model data orientation added. QBarSeries: some model data function placeholders
r527 points.replace(index,point);
Michal Klocek
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r622 updateLayout(m_points,points,index);
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r466 update();
}
void XYChartItem::handleDomainChanged(qreal minX, qreal maxX, qreal minY, qreal maxY)
{
m_minX=minX;
m_maxX=maxX;
m_minY=minY;
m_maxY=maxY;
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r743 if (isEmpty()) return;
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r466 QVector<QPointF> points = calculateGeometryPoints();
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r622 updateLayout(m_points,points);
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r466 update();
}
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r743 void XYChartItem::handleGeometryChanged(const QRectF &rect)
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r466 {
Q_ASSERT(rect.isValid());
m_size=rect.size();
m_clipRect=rect.translated(-rect.topLeft());
setPos(rect.topLeft());
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r743 if (isEmpty()) return;
Michal Klocek
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r466 QVector<QPointF> points = calculateGeometryPoints();
Michal Klocek
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r622 updateLayout(m_points,points);
Michal Klocek
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r466 update();
}
bool XYChartItem::isEmpty()
{
Jani Honkonen
Use qFuzzyIsNull to compare (in)equality of real values
r768 return !m_clipRect.isValid() || qFuzzyIsNull(m_maxX - m_minX) || qFuzzyIsNull(m_maxY - m_minY);
Michal Klocek
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r466 }
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r743 void XYChartItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
Michal Klocek
Refactors click signal to line,area,spline,scatter charts
r571 {
emit clicked(calculateDomainPoint(event->pos()));
}
Michal Klocek
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r466 #include "moc_xychartitem_p.cpp"
QTCOMMERCIALCHART_END_NAMESPACE