splinechartitem.cpp
172 lines
| 4.6 KiB
| text/x-c
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CppLexer
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r794 | /**************************************************************************** | ||
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r1218 | ** | ||
** 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 | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
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r794 | |||
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r460 | #include "splinechartitem_p.h" | ||
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r938 | #include "qsplineseries_p.h" | ||
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r476 | #include "chartpresenter_p.h" | ||
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r1735 | #include "splineanimation_p.h" | ||
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r401 | #include <QPainter> | ||
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r1218 | #include <QGraphicsSceneMouseEvent> | ||
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r295 | |||
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r401 | QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||
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r743 | SplineChartItem::SplineChartItem(QSplineSeries *series, ChartPresenter *presenter) : | ||
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r1342 | XYChart(series, presenter), | ||
QGraphicsItem(presenter ? presenter->rootItem() : 0), | ||||
m_series(series), | ||||
m_pointsVisible(false), | ||||
m_animation(0) | ||||
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r295 | { | ||
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r1747 | setZValue(ChartPresenter::SplineChartZValue); | ||
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r938 | QObject::connect(m_series->d_func(),SIGNAL(updated()),this,SLOT(handleUpdated())); | ||
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r1342 | QObject::connect(series, SIGNAL(visibleChanged()), this, SLOT(handleUpdated())); | ||
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r476 | handleUpdated(); | ||
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r295 | } | ||
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r465 | QRectF SplineChartItem::boundingRect() const | ||
{ | ||||
return m_rect; | ||||
} | ||||
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r295 | |||
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r465 | QPainterPath SplineChartItem::shape() const | ||
{ | ||||
return m_path; | ||||
} | ||||
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r401 | |||
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r1217 | void SplineChartItem::setAnimation(SplineAnimation* animation) | ||
{ | ||||
m_animation=animation; | ||||
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r1218 | XYChart::setAnimation(animation); | ||
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r1217 | } | ||
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r1735 | ChartAnimation* SplineChartItem::animation() const | ||
{ | ||||
return m_animation; | ||||
} | ||||
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r1217 | void SplineChartItem::setControlGeometryPoints(QVector<QPointF>& points) | ||
{ | ||||
m_controlPoints=points; | ||||
} | ||||
QVector<QPointF> SplineChartItem::controlGeometryPoints() const | ||||
{ | ||||
return m_controlPoints; | ||||
} | ||||
void SplineChartItem::updateChart(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints,int index) | ||||
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r1082 | { | ||
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r622 | QVector<QPointF> controlPoints; | ||
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r1217 | if(newPoints.count()>=2) { | ||
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r1082 | controlPoints.resize(newPoints.count()*2-2); | ||
} | ||||
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r622 | |||
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r743 | for (int i = 0; i < newPoints.size() - 1; i++) { | ||
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r622 | controlPoints[2*i] = calculateGeometryControlPoint(2 * i); | ||
controlPoints[2 * i + 1] = calculateGeometryControlPoint(2 * i + 1); | ||||
} | ||||
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r1770 | if (m_animation) { | ||
m_animation->setup(oldPoints,newPoints,m_controlPoints,controlPoints,index); | ||||
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r622 | } | ||
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r1770 | setGeometryPoints(newPoints); | ||
setControlGeometryPoints(controlPoints); | ||||
setDirty(false); | ||||
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r1217 | if (m_animation) { | ||
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r1241 | presenter()->startAnimation(m_animation); | ||
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r1770 | } else { | ||
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r1217 | updateGeometry(); | ||
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r622 | } | ||
} | ||||
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r460 | QPointF SplineChartItem::calculateGeometryControlPoint(int index) const | ||
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r401 | { | ||
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r1218 | return XYChart::calculateGeometryPoint(m_series->d_func()->controlPoint(index)); | ||
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r419 | } | ||
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r1217 | void SplineChartItem::updateGeometry() | ||
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r946 | { | ||
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r1217 | const QVector<QPointF> &points = geometryPoints(); | ||
const QVector<QPointF> &controlPoints = controlGeometryPoints(); | ||||
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r946 | |||
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r743 | if ((points.size()<2) || (controlPoints.size()<2)) { | ||
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r1271 | prepareGeometryChange(); | ||
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r1085 | m_path = QPainterPath(); | ||
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r1271 | m_rect = QRect(); | ||
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r545 | return; | ||
} | ||||
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r423 | |||
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r622 | Q_ASSERT(points.count()*2-2 == controlPoints.count()); | ||
QPainterPath splinePath(points.at(0)); | ||||
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r423 | |||
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r743 | for (int i = 0; i < points.size() - 1; i++) { | ||
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r423 | const QPointF& point = points.at(i + 1); | ||
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r622 | splinePath.cubicTo(controlPoints[2*i],controlPoints[2 * i + 1],point); | ||
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r423 | } | ||
prepareGeometryChange(); | ||||
m_path = splinePath; | ||||
m_rect = splinePath.boundingRect(); | ||||
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r1218 | setPos(origin()); | ||
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r465 | } | ||
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r476 | //handlers | ||
void SplineChartItem::handleUpdated() | ||||
{ | ||||
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r1346 | setVisible(m_series->isVisible()); | ||
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r580 | m_pointsVisible = m_series->pointsVisible(); | ||
m_linePen = m_series->pen(); | ||||
m_pointPen = m_series->pen(); | ||||
m_pointPen.setWidthF(2*m_pointPen.width()); | ||||
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r476 | update(); | ||
} | ||||
//painter | ||||
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r465 | |||
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r460 | void SplineChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) | ||
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r423 | { | ||
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r611 | Q_UNUSED(widget) | ||
Q_UNUSED(option) | ||||
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r1346 | |||
painter->save(); | ||||
painter->setClipRect(clipRect()); | ||||
painter->setPen(m_linePen); | ||||
painter->drawPath(m_path); | ||||
if (m_pointsVisible) { | ||||
painter->setPen(m_pointPen); | ||||
painter->drawPoints(geometryPoints()); | ||||
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r580 | } | ||
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r1346 | painter->restore(); | ||
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r423 | } | ||
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r417 | |||
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r1218 | void SplineChartItem::mousePressEvent(QGraphicsSceneMouseEvent *event) | ||
{ | ||||
emit XYChart::clicked(calculateDomainPoint(event->pos())); | ||||
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r1747 | QGraphicsItem::mousePressEvent(event); | ||
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r1218 | } | ||
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r476 | |||
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r460 | #include "moc_splinechartitem_p.cpp" | ||
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r401 | |||
QTCOMMERCIALCHART_END_NAMESPACE | ||||