|
|
/****************************************************************************
|
|
|
**
|
|
|
** 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 "qxyseries_p.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "chartanimator_p.h"
|
|
|
#include <QPainter>
|
|
|
#include <QGraphicsSceneMouseEvent>
|
|
|
#include <QAbstractItemModel>
|
|
|
|
|
|
|
|
|
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->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(pointsAdded(int, int)),this,SLOT(handlePointsAdded(int, int)));
|
|
|
connect(series->d_func(),SIGNAL(pointRemoved(int)),this,SLOT(handlePointRemoved(int)));
|
|
|
connect(series->d_func(),SIGNAL(pointsRemoved(int, int)),this,SLOT(handlePointsRemoved(int, int)));
|
|
|
connect(this,SIGNAL(clicked(QPointF)),series,SIGNAL(clicked(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);
|
|
|
const QList<QPointF>& vector = m_series->points();
|
|
|
qreal x = (vector[index].x() - m_minX)* deltaX;
|
|
|
qreal y = (vector[index].y() - 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> result;
|
|
|
result.resize(m_series->count());
|
|
|
const QList<QPointF>& vector = m_series->points();
|
|
|
for (int i = 0; i < m_series->count(); ++i) {
|
|
|
qreal x = (vector[i].x() - m_minX)* deltaX;
|
|
|
qreal y = (vector[i].y() - m_minY)*-deltaY + m_size.height();
|
|
|
result[i].setX(x);
|
|
|
result[i].setY(y);
|
|
|
}
|
|
|
return result;
|
|
|
}
|
|
|
|
|
|
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)
|
|
|
{
|
|
|
if (m_series->model() == 0) {
|
|
|
Q_ASSERT(index<m_series->count());
|
|
|
Q_ASSERT(index>=0);
|
|
|
}
|
|
|
QVector<QPointF> points = m_points;
|
|
|
QPointF point;
|
|
|
point = calculateGeometryPoint(index);
|
|
|
points.insert(index, point);
|
|
|
updateLayout(m_points, points, index);
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
void XYChartItem::handlePointsAdded(int start, int end)
|
|
|
{
|
|
|
if (m_series->model() == 0) {
|
|
|
for (int i = start; i <= end; i++)
|
|
|
handlePointAdded(i);
|
|
|
} else if (m_series->mapCount() != -1 && start >= m_series->mapFirst() + m_series->mapCount()) {
|
|
|
return;
|
|
|
} else {
|
|
|
int addedCount = end - start + 1;
|
|
|
if (m_series->mapCount() != -1 && addedCount > m_series->mapCount())
|
|
|
addedCount = m_series->mapCount();
|
|
|
int first = qMax(start, m_series->mapFirst()); // get the index of the first item that will be added
|
|
|
int last = qMin(first + addedCount - 1, m_series->count() + m_series->mapFirst() - 1); // get the index of the last item that will be added
|
|
|
for (int i = first; i <= last; i++) {
|
|
|
handlePointAdded(i - m_series->mapFirst());
|
|
|
}
|
|
|
// the map is limited therefore the items that are now outside the map
|
|
|
// need to be removed from the drawn points
|
|
|
if (m_series->mapCount() != -1 && m_points.size() > m_series->mapCount())
|
|
|
for (int i = m_points.size() - 1; i >= m_series->mapCount(); i--)
|
|
|
handlePointRemoved(i);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void XYChartItem::handlePointRemoved(int index)
|
|
|
{
|
|
|
if (m_series->model() == 0) {
|
|
|
Q_ASSERT(index<m_series->count() + 1);
|
|
|
Q_ASSERT(index>=0);
|
|
|
}
|
|
|
QVector<QPointF> points = m_points;
|
|
|
points.remove(index);
|
|
|
updateLayout(m_points, points, index);
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
void XYChartItem::handlePointsRemoved(int start, int end)
|
|
|
{
|
|
|
Q_UNUSED(start)
|
|
|
Q_UNUSED(end)
|
|
|
if (m_series->model() == 0) {
|
|
|
for (int i = end; i >= start; i--)
|
|
|
handlePointRemoved(i);
|
|
|
} else {
|
|
|
// series uses model as a data source
|
|
|
int mapFirst = m_series->mapFirst();
|
|
|
int mapCount = m_series->mapCount();
|
|
|
int removedCount = end - start + 1;
|
|
|
if (mapCount != -1 && start >= mapFirst + mapCount) {
|
|
|
return;
|
|
|
} else {
|
|
|
int toRemove = qMin(m_points.size(), removedCount); // first find how many items can actually be removed
|
|
|
int first = qMax(start, mapFirst); // get the index of the first item that will be removed.
|
|
|
int last = qMin(first + toRemove - 1, m_points.size() + mapFirst - 1); // get the index of the last item that will be removed.
|
|
|
for (int i = last; i >= first; i--) {
|
|
|
handlePointRemoved(i - mapFirst);
|
|
|
|
|
|
}
|
|
|
if (mapCount != -1) {
|
|
|
int itemsAvailable; // check how many are available to be added
|
|
|
if (m_series->mapOrientation() == Qt::Vertical)
|
|
|
itemsAvailable = m_series->model()->rowCount() - mapFirst - m_points.size();
|
|
|
else
|
|
|
itemsAvailable = m_series->model()->columnCount() - mapFirst - m_points.size();
|
|
|
int toBeAdded = qMin(itemsAvailable, mapCount - m_points.size()); // add not more items than there is space left to be filled.
|
|
|
int currentSize = m_points.size();
|
|
|
if (toBeAdded > 0)
|
|
|
for (int i = m_points.size(); i < currentSize + toBeAdded; i++) {
|
|
|
handlePointAdded(i);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
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) || m_series->points().isEmpty();
|
|
|
}
|
|
|
|
|
|
void XYChartItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
|
|
|
{
|
|
|
emit clicked(calculateDomainPoint(event->pos()));
|
|
|
}
|
|
|
|
|
|
#include "moc_xychartitem_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
