|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2014 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 Enterprise Charts Add-on.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE$
|
|
|
** Licensees holding valid Qt Enterprise licenses may use this file in
|
|
|
** accordance with the Qt Enterprise 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 "areachartitem_p.h"
|
|
|
#include "qareaseries.h"
|
|
|
#include "qareaseries_p.h"
|
|
|
#include "qlineseries.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "abstractdomain_p.h"
|
|
|
#include <QPainter>
|
|
|
#include <QGraphicsSceneMouseEvent>
|
|
|
#include <QDebug>
|
|
|
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
AreaChartItem::AreaChartItem(QAreaSeries *areaSeries, QGraphicsItem* item)
|
|
|
: ChartItem(areaSeries->d_func(),item),
|
|
|
m_series(areaSeries),
|
|
|
m_upper(0),
|
|
|
m_lower(0),
|
|
|
m_pointsVisible(false),
|
|
|
m_pointLabelsVisible(false),
|
|
|
m_pointLabelsFormat(areaSeries->pointLabelsFormat()),
|
|
|
m_pointLabelsFont(areaSeries->pointLabelsFont()),
|
|
|
m_pointLabelsColor(areaSeries->pointLabelsColor())
|
|
|
{
|
|
|
setAcceptHoverEvents(true);
|
|
|
setZValue(ChartPresenter::LineChartZValue);
|
|
|
if (m_series->upperSeries())
|
|
|
m_upper = new AreaBoundItem(this, m_series->upperSeries());
|
|
|
if (m_series->lowerSeries())
|
|
|
m_lower = new AreaBoundItem(this, m_series->lowerSeries());
|
|
|
|
|
|
QObject::connect(m_series->d_func(), SIGNAL(updated()), this, SLOT(handleUpdated()));
|
|
|
QObject::connect(m_series, SIGNAL(visibleChanged()), this, SLOT(handleUpdated()));
|
|
|
QObject::connect(m_series, SIGNAL(opacityChanged()), this, SLOT(handleUpdated()));
|
|
|
QObject::connect(this, SIGNAL(clicked(QPointF)), areaSeries, SIGNAL(clicked(QPointF)));
|
|
|
QObject::connect(this, SIGNAL(hovered(QPointF,bool)), areaSeries, SIGNAL(hovered(QPointF,bool)));
|
|
|
QObject::connect(areaSeries, SIGNAL(pointLabelsFormatChanged(QString)),
|
|
|
this, SLOT(handleUpdated()));
|
|
|
QObject::connect(areaSeries, SIGNAL(pointLabelsVisibilityChanged(bool)),
|
|
|
this, SLOT(handleUpdated()));
|
|
|
QObject::connect(areaSeries, SIGNAL(pointLabelsFontChanged(QFont)),
|
|
|
this, SLOT(handleUpdated()));
|
|
|
QObject::connect(areaSeries, SIGNAL(pointLabelsColorChanged(QColor)),
|
|
|
this, SLOT(handleUpdated()));
|
|
|
|
|
|
handleUpdated();
|
|
|
}
|
|
|
|
|
|
AreaChartItem::~AreaChartItem()
|
|
|
{
|
|
|
delete m_upper;
|
|
|
delete m_lower;
|
|
|
}
|
|
|
|
|
|
void AreaChartItem::setPresenter(ChartPresenter *presenter)
|
|
|
{
|
|
|
if (m_upper)
|
|
|
m_upper->setPresenter(presenter);
|
|
|
if (m_lower) {
|
|
|
m_lower->setPresenter(presenter);
|
|
|
}
|
|
|
ChartItem::setPresenter(presenter);
|
|
|
}
|
|
|
|
|
|
QRectF AreaChartItem::boundingRect() const
|
|
|
{
|
|
|
return m_rect;
|
|
|
}
|
|
|
|
|
|
QPainterPath AreaChartItem::shape() const
|
|
|
{
|
|
|
return m_path;
|
|
|
}
|
|
|
|
|
|
void AreaChartItem::updatePath()
|
|
|
{
|
|
|
QPainterPath path;
|
|
|
QRectF rect(QPointF(0,0),domain()->size());
|
|
|
|
|
|
path = m_upper->path();
|
|
|
|
|
|
if (m_lower) {
|
|
|
// Note: Polarcharts always draw area correctly only when both series have equal width or are
|
|
|
// fully displayed. If one series is partally off-chart, the connecting line between
|
|
|
// the series does not attach to the end of the partially hidden series but to the point
|
|
|
// where it intersects the axis line. The problem is especially noticeable when one of the series
|
|
|
// is entirely off-chart, in which case the connecting line connects two ends of the
|
|
|
// visible series.
|
|
|
// This happens because we get the paths from linechart, which omits off-chart segments.
|
|
|
// To properly fix, linechart would need to provide true full path, in right, left, and the rest
|
|
|
// portions to enable proper clipping. However, combining those to single visually unified area
|
|
|
// would be a nightmare, since they would have to be painted separately.
|
|
|
path.connectPath(m_lower->path().toReversed());
|
|
|
} else {
|
|
|
QPointF first = path.pointAtPercent(0);
|
|
|
QPointF last = path.pointAtPercent(1);
|
|
|
if (presenter()->chartType() == QChart::ChartTypeCartesian) {
|
|
|
path.lineTo(last.x(), rect.bottom());
|
|
|
path.lineTo(first.x(), rect.bottom());
|
|
|
} else { // polar
|
|
|
path.lineTo(rect.center());
|
|
|
}
|
|
|
}
|
|
|
path.closeSubpath();
|
|
|
|
|
|
// Only zoom in if the bounding rect of the path fits inside int limits. QWidget::update() uses
|
|
|
// a region that has to be compatible with QRect.
|
|
|
if (path.boundingRect().height() <= INT_MAX
|
|
|
&& path.boundingRect().width() <= INT_MAX) {
|
|
|
prepareGeometryChange();
|
|
|
m_path = path;
|
|
|
m_rect = path.boundingRect();
|
|
|
update();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void AreaChartItem::handleUpdated()
|
|
|
{
|
|
|
setVisible(m_series->isVisible());
|
|
|
m_pointsVisible = m_series->pointsVisible();
|
|
|
m_linePen = m_series->pen();
|
|
|
m_brush = m_series->brush();
|
|
|
m_pointPen = m_series->pen();
|
|
|
m_pointPen.setWidthF(2 * m_pointPen.width());
|
|
|
setOpacity(m_series->opacity());
|
|
|
m_pointLabelsFormat = m_series->pointLabelsFormat();
|
|
|
m_pointLabelsVisible = m_series->pointLabelsVisible();
|
|
|
m_pointLabelsFont = m_series->pointLabelsFont();
|
|
|
m_pointLabelsColor = m_series->pointLabelsColor();
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
void AreaChartItem::handleDomainUpdated()
|
|
|
{
|
|
|
if (m_upper) {
|
|
|
AbstractDomain* d = m_upper->domain();
|
|
|
d->setSize(domain()->size());
|
|
|
d->setRange(domain()->minX(),domain()->maxX(),domain()->minY(),domain()->maxY());
|
|
|
m_upper->handleDomainUpdated();
|
|
|
}
|
|
|
|
|
|
if (m_lower) {
|
|
|
AbstractDomain* d = m_lower->domain();
|
|
|
d->setSize(domain()->size());
|
|
|
d->setRange(domain()->minX(),domain()->maxX(),domain()->minY(),domain()->maxY());
|
|
|
m_lower->handleDomainUpdated();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void AreaChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
|
|
|
{
|
|
|
Q_UNUSED(widget)
|
|
|
Q_UNUSED(option)
|
|
|
painter->save();
|
|
|
painter->setPen(m_linePen);
|
|
|
painter->setBrush(m_brush);
|
|
|
QRectF clipRect = QRectF(QPointF(0, 0), domain()->size());
|
|
|
if (presenter()->chartType() == QChart::ChartTypePolar)
|
|
|
painter->setClipRegion(QRegion(clipRect.toRect(), QRegion::Ellipse));
|
|
|
else
|
|
|
painter->setClipRect(clipRect);
|
|
|
painter->drawPath(m_path);
|
|
|
if (m_pointsVisible) {
|
|
|
painter->setPen(m_pointPen);
|
|
|
painter->drawPoints(m_upper->geometryPoints());
|
|
|
if (m_lower)
|
|
|
painter->drawPoints(m_lower->geometryPoints());
|
|
|
}
|
|
|
|
|
|
// Draw series point label
|
|
|
if (m_pointLabelsVisible) {
|
|
|
static const QString xPointTag(QLatin1String("@xPoint"));
|
|
|
static const QString yPointTag(QLatin1String("@yPoint"));
|
|
|
const int labelOffset = 2;
|
|
|
|
|
|
painter->setFont(m_pointLabelsFont);
|
|
|
painter->setPen(QPen(m_pointLabelsColor));
|
|
|
QFontMetrics fm(painter->font());
|
|
|
|
|
|
QString pointLabel = m_pointLabelsFormat;
|
|
|
|
|
|
if (m_series->upperSeries()) {
|
|
|
for (int i(0); i < m_series->upperSeries()->count(); i++) {
|
|
|
pointLabel.replace(xPointTag,
|
|
|
presenter()->numberToString(m_series->upperSeries()->at(i).x()));
|
|
|
pointLabel.replace(yPointTag,
|
|
|
presenter()->numberToString(m_series->upperSeries()->at(i).y()));
|
|
|
|
|
|
// Position text in relation to the point
|
|
|
int pointLabelWidth = fm.width(pointLabel);
|
|
|
QPointF position(m_upper->geometryPoints().at(i));
|
|
|
position.setX(position.x() - pointLabelWidth / 2);
|
|
|
position.setY(position.y() - m_series->upperSeries()->pen().width() / 2 - labelOffset);
|
|
|
|
|
|
painter->drawText(position, pointLabel);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (m_series->lowerSeries()) {
|
|
|
for (int i(0); i < m_series->lowerSeries()->count(); i++) {
|
|
|
pointLabel.replace(xPointTag,
|
|
|
presenter()->numberToString(m_series->lowerSeries()->at(i).x()));
|
|
|
pointLabel.replace(yPointTag,
|
|
|
presenter()->numberToString(m_series->lowerSeries()->at(i).y()));
|
|
|
|
|
|
// Position text in relation to the point
|
|
|
int pointLabelWidth = fm.width(pointLabel);
|
|
|
QPointF position(m_lower->geometryPoints().at(i));
|
|
|
position.setX(position.x() - pointLabelWidth / 2);
|
|
|
position.setY(position.y() - m_series->lowerSeries()->pen().width() / 2 - labelOffset);
|
|
|
|
|
|
painter->drawText(position, pointLabel);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
painter->restore();
|
|
|
}
|
|
|
|
|
|
void AreaChartItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
|
|
|
{
|
|
|
emit clicked(m_upper->domain()->calculateDomainPoint(event->pos()));
|
|
|
ChartItem::mousePressEvent(event);
|
|
|
}
|
|
|
|
|
|
void AreaChartItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
|
|
|
{
|
|
|
emit hovered(domain()->calculateDomainPoint(event->pos()), true);
|
|
|
event->accept();
|
|
|
// QGraphicsItem::hoverEnterEvent(event);
|
|
|
}
|
|
|
|
|
|
void AreaChartItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
|
|
|
{
|
|
|
emit hovered(domain()->calculateDomainPoint(event->pos()), false);
|
|
|
event->accept();
|
|
|
// QGraphicsItem::hoverEnterEvent(event);
|
|
|
}
|
|
|
|
|
|
#include "moc_areachartitem_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
