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-rw-r--r--src/areachart/areachartitem.cpp262
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diff --git a/src/areachart/areachartitem.cpp b/src/areachart/areachartitem.cpp
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--- a/src/areachart/areachartitem.cpp
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-/****************************************************************************
-**
-** 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
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-13 23:54:44 +0000