##// END OF EJS Templates
Renames header axisitem -> axis
Renames header axisitem -> axis

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xychartitem.cpp
196 lines | 5.7 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"
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r938 #include "qxyseries_p.h"
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r466 #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
sauimone
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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)
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r466 {
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r938 connect(series->d_func(),SIGNAL(pointReplaced(int)),this,SLOT(handlePointReplaced(int)));
connect(series->d_func(),SIGNAL(pointAdded(int)),this,SLOT(handlePointAdded(int)));
connect(series->d_func(),SIGNAL(pointRemoved(int)),this,SLOT(handlePointRemoved(int)));
sauimone
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r743 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);
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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);
}
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r743 void XYChartItem::updateLayout(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints,int index)
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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)
{
QVector<QPointF> points = m_points;
Marek Rosa
XYSeries model with limits working.
r833 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);
}
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r466 update();
}
void XYChartItem::handlePointRemoved(int index)
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r938 {
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r466 QVector<QPointF> points = m_points;
Marek Rosa
XYSeries model with limits working.
r833 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);
}
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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);
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r476 QVector<QPointF> points = m_points;
Marek Rosa
QXYSeries: model data orientation added. QBarSeries: some model data function placeholders
r527 points.replace(index,point);
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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;
sauimone
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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 {
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r833 Q_ASSERT(rect.isValid());
m_size=rect.size();
m_clipRect=rect.translated(-rect.topLeft());
setPos(rect.topLeft());
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r466
sauimone
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r743 if (isEmpty()) return;
Marek Rosa
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r833 QVector<QPointF> points = calculateGeometryPoints();
updateLayout(m_points,points);
update();
Michal Klocek
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r466 }
bool XYChartItem::isEmpty()
{
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r833 return !m_clipRect.isValid() || qFuzzyIsNull(m_maxX - m_minX) || qFuzzyIsNull(m_maxY - m_minY);
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r466 }
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r743 void XYChartItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
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r571 {
emit clicked(calculateDomainPoint(event->pos()));
}
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r466 #include "moc_xychartitem_p.cpp"
QTCOMMERCIALCHART_END_NAMESPACE