splinechartitem.cpp
517 lines
| 20.6 KiB
| text/x-c
|
CppLexer
Titta Heikkala
|
r2845 | /****************************************************************************** | ||
| ** | ||||
| ** Copyright (C) 2015 The Qt Company Ltd. | ||||
| ** Contact: http://www.qt.io/licensing/ | ||||
| ** | ||||
| ** This file is part of the Qt Charts module. | ||||
| ** | ||||
| ** $QT_BEGIN_LICENSE:COMM$ | ||||
| ** | ||||
| ** Commercial License Usage | ||||
| ** Licensees holding valid commercial Qt licenses may use this file in | ||||
| ** accordance with the commercial license agreement provided with the | ||||
| ** Software or, alternatively, in accordance with the terms contained in | ||||
| ** a written agreement between you and The Qt Company. For licensing terms | ||||
| ** and conditions see http://www.qt.io/terms-conditions. For further | ||||
| ** information use the contact form at http://www.qt.io/contact-us. | ||||
| ** | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ******************************************************************************/ | ||||
Jani Honkonen
|
r794 | |||
|
Titta Heikkala
|
r2714 | #include <private/splinechartitem_p.h> | ||
| #include <private/qsplineseries_p.h> | ||||
| #include <private/chartpresenter_p.h> | ||||
| #include <private/splineanimation_p.h> | ||||
| #include <private/polardomain_p.h> | ||||
| #include <QtGui/QPainter> | ||||
| #include <QtWidgets/QGraphicsSceneMouseEvent> | ||||
Marek Rosa
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r295 | |||
Titta Heikkala
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
|
Marek Rosa
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r401 | |||
Miikka Heikkinen
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r2483 | SplineChartItem::SplineChartItem(QSplineSeries *series, QGraphicsItem *item) | ||
Michal Klocek
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r2273 | : XYChart(series,item), | ||
|
Jani Honkonen
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r2097 | m_series(series), | ||
| m_pointsVisible(false), | ||||
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Titta Heikkala
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r2689 | m_animation(0), | ||
| m_pointLabelsVisible(false), | ||||
|
Titta Heikkala
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r2695 | m_pointLabelsFormat(series->pointLabelsFormat()), | ||
|
Titta Heikkala
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r2689 | m_pointLabelsFont(series->pointLabelsFont()), | ||
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Titta Heikkala
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r2739 | m_pointLabelsColor(series->pointLabelsColor()), | ||
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Titta Heikkala
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r2815 | m_pointLabelsClipping(true), | ||
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Titta Heikkala
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r2739 | m_mousePressed(false) | ||
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Marek Rosa
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r295 | { | ||
|
Marek Rosa
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r2256 | setAcceptHoverEvents(true); | ||
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Titta Heikkala
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r2739 | setFlag(QGraphicsItem::ItemIsSelectable); | ||
|
Michal Klocek
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r1747 | setZValue(ChartPresenter::SplineChartZValue); | ||
|
Jani Honkonen
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r2097 | QObject::connect(m_series->d_func(), SIGNAL(updated()), this, SLOT(handleUpdated())); | ||
Tero Ahola
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r1342 | QObject::connect(series, SIGNAL(visibleChanged()), this, SLOT(handleUpdated())); | ||
|
Tero Ahola
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r2067 | QObject::connect(series, SIGNAL(opacityChanged()), this, SLOT(handleUpdated())); | ||
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Titta Heikkala
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r2689 | QObject::connect(series, SIGNAL(pointLabelsFormatChanged(QString)), | ||
| this, SLOT(handleUpdated())); | ||||
| QObject::connect(series, SIGNAL(pointLabelsVisibilityChanged(bool)), | ||||
| this, SLOT(handleUpdated())); | ||||
| QObject::connect(series, SIGNAL(pointLabelsFontChanged(QFont)), this, SLOT(handleUpdated())); | ||||
| QObject::connect(series, SIGNAL(pointLabelsColorChanged(QColor)), this, SLOT(handleUpdated())); | ||||
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Titta Heikkala
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r2815 | QObject::connect(series, SIGNAL(pointLabelsClippingChanged(bool)), this, SLOT(handleUpdated())); | ||
|
Michal Klocek
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r476 | handleUpdated(); | ||
|
Marek Rosa
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r295 | } | ||
|
Michal Klocek
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r465 | QRectF SplineChartItem::boundingRect() const | ||
| { | ||||
| return m_rect; | ||||
| } | ||||
|
Marek Rosa
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r295 | |||
|
Michal Klocek
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r465 | QPainterPath SplineChartItem::shape() const | ||
| { | ||||
|
Miikka Heikkinen
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r2483 | return m_fullPath; | ||
|
Michal Klocek
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r465 | } | ||
|
Marek Rosa
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r401 | |||
|
Jani Honkonen
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r2104 | void SplineChartItem::setAnimation(SplineAnimation *animation) | ||
|
Michal Klocek
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r1217 | { | ||
|
Jani Honkonen
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r2097 | m_animation = animation; | ||
|
Michal Klocek
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r1218 | XYChart::setAnimation(animation); | ||
|
Michal Klocek
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r1217 | } | ||
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Jani Honkonen
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r2104 | ChartAnimation *SplineChartItem::animation() const | ||
|
Michal Klocek
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r1735 | { | ||
| return m_animation; | ||||
| } | ||||
|
Michal Klocek
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r1217 | void SplineChartItem::setControlGeometryPoints(QVector<QPointF>& points) | ||
| { | ||||
|
Jani Honkonen
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r2097 | m_controlPoints = points; | ||
|
Michal Klocek
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r1217 | } | ||
| QVector<QPointF> SplineChartItem::controlGeometryPoints() const | ||||
| { | ||||
| return m_controlPoints; | ||||
| } | ||||
|
Jani Honkonen
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r2097 | void SplineChartItem::updateChart(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints, int index) | ||
|
Michal Klocek
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r1082 | { | ||
|
Michal Klocek
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r622 | QVector<QPointF> controlPoints; | ||
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Jani Honkonen
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r2097 | if (newPoints.count() >= 2) | ||
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Marek Rosa
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r2372 | controlPoints = calculateControlPoints(newPoints); | ||
|
Michal Klocek
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r622 | |||
|
Tero Ahola
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r1782 | if (m_animation) | ||
| m_animation->setup(oldPoints, newPoints, m_controlPoints, controlPoints, index); | ||||
|
Michal Klocek
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r622 | |||
|
Tero Ahola
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r1782 | m_points = newPoints; | ||
| m_controlPoints = controlPoints; | ||||
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Michal Klocek
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r1770 | setDirty(false); | ||
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Jani Honkonen
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r2097 | if (m_animation) | ||
|
Michal Klocek
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r1241 | presenter()->startAnimation(m_animation); | ||
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Jani Honkonen
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r2097 | else | ||
|
Michal Klocek
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r1217 | updateGeometry(); | ||
|
Michal Klocek
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r622 | } | ||
|
Michal Klocek
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r1217 | void SplineChartItem::updateGeometry() | ||
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Tero Ahola
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r946 | { | ||
|
Tero Ahola
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r1782 | const QVector<QPointF> &points = m_points; | ||
| const QVector<QPointF> &controlPoints = m_controlPoints; | ||||
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Tero Ahola
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r946 | |||
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Jani Honkonen
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r2097 | if ((points.size() < 2) || (controlPoints.size() < 2)) { | ||
| prepareGeometryChange(); | ||||
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Marek Rosa
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r1085 | m_path = QPainterPath(); | ||
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Michal Klocek
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r1271 | m_rect = QRect(); | ||
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Marek Rosa
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r545 | return; | ||
| } | ||||
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Marek Rosa
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r423 | |||
|
Jani Honkonen
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r2097 | Q_ASSERT(points.count() * 2 - 2 == controlPoints.count()); | ||
|
Michal Klocek
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r622 | |||
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Miikka Heikkinen
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r2483 | QPainterPath splinePath; | ||
| QPainterPath fullPath; | ||||
| // Use worst case scenario to determine required margin. | ||||
| qreal margin = m_linePen.width() * 1.42; | ||||
| if (m_series->chart()->chartType() == QChart::ChartTypePolar) { | ||||
| QPainterPath splinePathLeft; | ||||
| QPainterPath splinePathRight; | ||||
| QPainterPath *currentSegmentPath = 0; | ||||
| QPainterPath *previousSegmentPath = 0; | ||||
| qreal minX = domain()->minX(); | ||||
| qreal maxX = domain()->maxX(); | ||||
| qreal minY = domain()->minY(); | ||||
|
Miikka Heikkinen
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r2491 | QPointF currentSeriesPoint = m_series->at(0); | ||
|
Miikka Heikkinen
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r2483 | QPointF currentGeometryPoint = points.at(0); | ||
| QPointF previousGeometryPoint = points.at(0); | ||||
| bool pointOffGrid = false; | ||||
| bool previousPointWasOffGrid = (currentSeriesPoint.x() < minX || currentSeriesPoint.x() > maxX); | ||||
| m_visiblePoints.clear(); | ||||
| m_visiblePoints.reserve(points.size()); | ||||
| qreal domainRadius = domain()->size().height() / 2.0; | ||||
| const QPointF centerPoint(domainRadius, domainRadius); | ||||
| if (!previousPointWasOffGrid) { | ||||
| fullPath.moveTo(points.at(0)); | ||||
| // Do not draw points for points below minimum Y. | ||||
| if (m_pointsVisible && currentSeriesPoint.y() >= minY) | ||||
| m_visiblePoints.append(currentGeometryPoint); | ||||
| } | ||||
| qreal leftMarginLine = centerPoint.x() - margin; | ||||
| qreal rightMarginLine = centerPoint.x() + margin; | ||||
| qreal horizontal = centerPoint.y(); | ||||
|
Miikka Heikkinen
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r2489 | // See ScatterChartItem::updateGeometry() for explanation why seriesLastIndex is needed | ||
| const int seriesLastIndex = m_series->count() - 1; | ||||
|
Miikka Heikkinen
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r2483 | for (int i = 1; i < points.size(); i++) { | ||
| // Interpolating spline fragments accurately is not trivial, and would anyway be ugly | ||||
| // when thick pen is used, so we work around it by utilizing three separate | ||||
| // paths for spline segments and clip those with custom regions at paint time. | ||||
| // "Right" path contains segments that cross the axis line with visible point on the | ||||
| // right side of the axis line, as well as segments that have one point within the margin | ||||
| // on the right side of the axis line and another point on the right side of the chart. | ||||
| // "Left" path contains points with similarly on the left side. | ||||
| // "Full" path contains rest of the points. | ||||
| // This doesn't yield perfect results always. E.g. when segment covers more than 90 | ||||
| // degrees and both of the points are within the margin, one in the top half and one in the | ||||
| // bottom half of the chart, the bottom one gets clipped incorrectly. | ||||
| // However, this should be rare occurrence in any sensible chart. | ||||
|
Miikka Heikkinen
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r2491 | currentSeriesPoint = m_series->at(qMin(seriesLastIndex, i)); | ||
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Miikka Heikkinen
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r2483 | currentGeometryPoint = points.at(i); | ||
| pointOffGrid = (currentSeriesPoint.x() < minX || currentSeriesPoint.x() > maxX); | ||||
| // Draw something unless both off-grid | ||||
| if (!pointOffGrid || !previousPointWasOffGrid) { | ||||
| bool dummyOk; // We know points are ok, but this is needed | ||||
| qreal currentAngle = static_cast<PolarDomain *>(domain())->toAngularCoordinate(currentSeriesPoint.x(), dummyOk); | ||||
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Miikka Heikkinen
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r2491 | qreal previousAngle = static_cast<PolarDomain *>(domain())->toAngularCoordinate(m_series->at(i - 1).x(), dummyOk); | ||
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Miikka Heikkinen
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r2483 | |||
| if ((qAbs(currentAngle - previousAngle) > 180.0)) { | ||||
| // If the angle between two points is over 180 degrees (half X range), | ||||
| // any direct segment between them becomes meaningless. | ||||
| // In this case two line segments are drawn instead, from previous | ||||
| // point to the center and from center to current point. | ||||
| if ((previousAngle < 0.0 || (previousAngle <= 180.0 && previousGeometryPoint.x() < rightMarginLine)) | ||||
| && previousGeometryPoint.y() < horizontal) { | ||||
| currentSegmentPath = &splinePathRight; | ||||
| } else if ((previousAngle > 360.0 || (previousAngle > 180.0 && previousGeometryPoint.x() > leftMarginLine)) | ||||
| && previousGeometryPoint.y() < horizontal) { | ||||
| currentSegmentPath = &splinePathLeft; | ||||
| } else if (previousAngle > 0.0 && previousAngle < 360.0) { | ||||
| currentSegmentPath = &splinePath; | ||||
| } else { | ||||
| currentSegmentPath = 0; | ||||
| } | ||||
| if (currentSegmentPath) { | ||||
| if (previousSegmentPath != currentSegmentPath) | ||||
| currentSegmentPath->moveTo(previousGeometryPoint); | ||||
| if (!previousSegmentPath) | ||||
| fullPath.moveTo(previousGeometryPoint); | ||||
| currentSegmentPath->lineTo(centerPoint); | ||||
| fullPath.lineTo(centerPoint); | ||||
| } | ||||
| previousSegmentPath = currentSegmentPath; | ||||
| if ((currentAngle < 0.0 || (currentAngle <= 180.0 && currentGeometryPoint.x() < rightMarginLine)) | ||||
| && currentGeometryPoint.y() < horizontal) { | ||||
| currentSegmentPath = &splinePathRight; | ||||
| } else if ((currentAngle > 360.0 || (currentAngle > 180.0 &¤tGeometryPoint.x() > leftMarginLine)) | ||||
| && currentGeometryPoint.y() < horizontal) { | ||||
| currentSegmentPath = &splinePathLeft; | ||||
| } else if (currentAngle > 0.0 && currentAngle < 360.0) { | ||||
| currentSegmentPath = &splinePath; | ||||
| } else { | ||||
| currentSegmentPath = 0; | ||||
| } | ||||
| if (currentSegmentPath) { | ||||
| if (previousSegmentPath != currentSegmentPath) | ||||
| currentSegmentPath->moveTo(centerPoint); | ||||
| if (!previousSegmentPath) | ||||
| fullPath.moveTo(centerPoint); | ||||
| currentSegmentPath->lineTo(currentGeometryPoint); | ||||
| fullPath.lineTo(currentGeometryPoint); | ||||
| } | ||||
| } else { | ||||
| QPointF cp1 = controlPoints[2 * (i - 1)]; | ||||
| QPointF cp2 = controlPoints[(2 * i) - 1]; | ||||
| if (previousAngle < 0.0 || currentAngle < 0.0 | ||||
| || ((previousAngle <= 180.0 && currentAngle <= 180.0) | ||||
| && ((previousGeometryPoint.x() < rightMarginLine && previousGeometryPoint.y() < horizontal) | ||||
| || (currentGeometryPoint.x() < rightMarginLine && currentGeometryPoint.y() < horizontal)))) { | ||||
| currentSegmentPath = &splinePathRight; | ||||
| } else if (previousAngle > 360.0 || currentAngle > 360.0 | ||||
| || ((previousAngle > 180.0 && currentAngle > 180.0) | ||||
| && ((previousGeometryPoint.x() > leftMarginLine && previousGeometryPoint.y() < horizontal) | ||||
| || (currentGeometryPoint.x() > leftMarginLine && currentGeometryPoint.y() < horizontal)))) { | ||||
| currentSegmentPath = &splinePathLeft; | ||||
| } else { | ||||
| currentSegmentPath = &splinePath; | ||||
| } | ||||
| if (currentSegmentPath != previousSegmentPath) | ||||
| currentSegmentPath->moveTo(previousGeometryPoint); | ||||
| if (!previousSegmentPath) | ||||
| fullPath.moveTo(previousGeometryPoint); | ||||
| fullPath.cubicTo(cp1, cp2, currentGeometryPoint); | ||||
| currentSegmentPath->cubicTo(cp1, cp2, currentGeometryPoint); | ||||
| } | ||||
| } else { | ||||
| currentSegmentPath = 0; | ||||
| } | ||||
| previousPointWasOffGrid = pointOffGrid; | ||||
| if (!pointOffGrid && m_pointsVisible && currentSeriesPoint.y() >= minY) | ||||
| m_visiblePoints.append(currentGeometryPoint); | ||||
| previousSegmentPath = currentSegmentPath; | ||||
| previousGeometryPoint = currentGeometryPoint; | ||||
| } | ||||
|
Marek Rosa
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r423 | |||
|
Miikka Heikkinen
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r2483 | m_pathPolarRight = splinePathRight; | ||
| m_pathPolarLeft = splinePathLeft; | ||||
| // Note: This construction of m_fullpath is not perfect. The partial segments that are | ||||
| // outside left/right clip regions at axis boundary still generate hover/click events, | ||||
| // because shape doesn't get clipped. It doesn't seem possible to do sensibly. | ||||
| } else { // not polar | ||||
| splinePath.moveTo(points.at(0)); | ||||
| for (int i = 0; i < points.size() - 1; i++) { | ||||
| const QPointF &point = points.at(i + 1); | ||||
| splinePath.cubicTo(controlPoints[2 * i], controlPoints[2 * i + 1], point); | ||||
| } | ||||
| fullPath = splinePath; | ||||
|
Marek Rosa
|
r423 | } | ||
|
Miikka Heikkinen
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r2483 | |||
| QPainterPathStroker stroker; | ||||
| // The full path is comprised of three separate paths. | ||||
| // This is why we are prepared for the "worst case" scenario, i.e. use always MiterJoin and | ||||
| // multiply line width with square root of two when defining shape and bounding rectangle. | ||||
| stroker.setWidth(margin); | ||||
| stroker.setJoinStyle(Qt::MiterJoin); | ||||
| stroker.setCapStyle(Qt::SquareCap); | ||||
| stroker.setMiterLimit(m_linePen.miterLimit()); | ||||
|
Marek Rosa
|
r423 | |||
|
Titta Heikkala
|
r2603 | // Only zoom in if the bounding rects of the path fit inside int limits. QWidget::update() uses | ||
| // a region that has to be compatible with QRect. | ||||
| QPainterPath checkShapePath = stroker.createStroke(fullPath); | ||||
| if (checkShapePath.boundingRect().height() <= INT_MAX | ||||
| && checkShapePath.boundingRect().width() <= INT_MAX | ||||
| && splinePath.boundingRect().height() <= INT_MAX | ||||
| && splinePath.boundingRect().width() <= INT_MAX) { | ||||
| m_path = splinePath; | ||||
|
Michal Klocek
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r2273 | |||
|
Titta Heikkala
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r2603 | prepareGeometryChange(); | ||
| m_fullPath = checkShapePath; | ||||
| m_rect = m_fullPath.boundingRect(); | ||||
| } | ||||
|
Michal Klocek
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r465 | } | ||
|
Marek Rosa
|
r2372 | /*! | ||
| Calculates control points which are needed by QPainterPath.cubicTo function to draw the cubic Bezier cureve between two points. | ||||
| */ | ||||
| QVector<QPointF> SplineChartItem::calculateControlPoints(const QVector<QPointF> &points) | ||||
| { | ||||
| QVector<QPointF> controlPoints; | ||||
| controlPoints.resize(points.count() * 2 - 2); | ||||
| int n = points.count() - 1; | ||||
| if (n == 1) { | ||||
| //for n==1 | ||||
| controlPoints[0].setX((2 * points[0].x() + points[1].x()) / 3); | ||||
| controlPoints[0].setY((2 * points[0].y() + points[1].y()) / 3); | ||||
| controlPoints[1].setX(2 * controlPoints[0].x() - points[0].x()); | ||||
| controlPoints[1].setY(2 * controlPoints[0].y() - points[0].y()); | ||||
| return controlPoints; | ||||
| } | ||||
| // Calculate first Bezier control points | ||||
| // Set of equations for P0 to Pn points. | ||||
| // | ||||
| // | 2 1 0 0 ... 0 0 0 ... 0 0 0 | | P1_1 | | P0 + 2 * P1 | | ||||
| // | 1 4 1 0 ... 0 0 0 ... 0 0 0 | | P1_2 | | 4 * P1 + 2 * P2 | | ||||
| // | 0 1 4 1 ... 0 0 0 ... 0 0 0 | | P1_3 | | 4 * P2 + 2 * P3 | | ||||
| // | . . . . . . . . . . . . | | ... | | ... | | ||||
| // | 0 0 0 0 ... 1 4 1 ... 0 0 0 | * | P1_i | = | 4 * P(i-1) + 2 * Pi | | ||||
| // | . . . . . . . . . . . . | | ... | | ... | | ||||
| // | 0 0 0 0 0 0 0 0 ... 1 4 1 | | P1_(n-1)| | 4 * P(n-2) + 2 * P(n-1) | | ||||
| // | 0 0 0 0 0 0 0 0 ... 0 2 7 | | P1_n | | 8 * P(n-1) + Pn | | ||||
| // | ||||
| QVector<qreal> vector; | ||||
| vector.resize(n); | ||||
| vector[0] = points[0].x() + 2 * points[1].x(); | ||||
| for (int i = 1; i < n - 1; ++i) | ||||
| vector[i] = 4 * points[i].x() + 2 * points[i + 1].x(); | ||||
| vector[n - 1] = (8 * points[n - 1].x() + points[n].x()) / 2.0; | ||||
| QVector<qreal> xControl = firstControlPoints(vector); | ||||
| vector[0] = points[0].y() + 2 * points[1].y(); | ||||
| for (int i = 1; i < n - 1; ++i) | ||||
| vector[i] = 4 * points[i].y() + 2 * points[i + 1].y(); | ||||
| vector[n - 1] = (8 * points[n - 1].y() + points[n].y()) / 2.0; | ||||
| QVector<qreal> yControl = firstControlPoints(vector); | ||||
| for (int i = 0, j = 0; i < n; ++i, ++j) { | ||||
| controlPoints[j].setX(xControl[i]); | ||||
| controlPoints[j].setY(yControl[i]); | ||||
| j++; | ||||
| if (i < n - 1) { | ||||
| controlPoints[j].setX(2 * points[i + 1].x() - xControl[i + 1]); | ||||
| controlPoints[j].setY(2 * points[i + 1].y() - yControl[i + 1]); | ||||
| } else { | ||||
| controlPoints[j].setX((points[n].x() + xControl[n - 1]) / 2); | ||||
| controlPoints[j].setY((points[n].y() + yControl[n - 1]) / 2); | ||||
| } | ||||
| } | ||||
| return controlPoints; | ||||
| } | ||||
| QVector<qreal> SplineChartItem::firstControlPoints(const QVector<qreal>& vector) | ||||
| { | ||||
| QVector<qreal> result; | ||||
| int count = vector.count(); | ||||
| result.resize(count); | ||||
| result[0] = vector[0] / 2.0; | ||||
| QVector<qreal> temp; | ||||
| temp.resize(count); | ||||
| temp[0] = 0; | ||||
| qreal b = 2.0; | ||||
| for (int i = 1; i < count; i++) { | ||||
| temp[i] = 1 / b; | ||||
| b = (i < count - 1 ? 4.0 : 3.5) - temp[i]; | ||||
| result[i] = (vector[i] - result[i - 1]) / b; | ||||
| } | ||||
| for (int i = 1; i < count; i++) | ||||
| result[count - i - 1] -= temp[count - i] * result[count - i]; | ||||
| return result; | ||||
| } | ||||
|
Michal Klocek
|
r476 | //handlers | ||
| void SplineChartItem::handleUpdated() | ||||
| { | ||||
|
Tero Ahola
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r1346 | setVisible(m_series->isVisible()); | ||
|
Tero Ahola
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r2067 | setOpacity(m_series->opacity()); | ||
|
Michal Klocek
|
r580 | m_pointsVisible = m_series->pointsVisible(); | ||
| m_linePen = m_series->pen(); | ||||
| m_pointPen = m_series->pen(); | ||||
|
Jani Honkonen
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r2097 | m_pointPen.setWidthF(2 * m_pointPen.width()); | ||
|
Titta Heikkala
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r2689 | m_pointLabelsFormat = m_series->pointLabelsFormat(); | ||
| m_pointLabelsVisible = m_series->pointLabelsVisible(); | ||||
| m_pointLabelsFont = m_series->pointLabelsFont(); | ||||
| m_pointLabelsColor = m_series->pointLabelsColor(); | ||||
|
Titta Heikkala
|
r2815 | m_pointLabelsClipping = m_series->pointLabelsClipping(); | ||
|
Michal Klocek
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r476 | update(); | ||
| } | ||||
| //painter | ||||
|
Michal Klocek
|
r465 | |||
|
Marek Rosa
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r460 | void SplineChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) | ||
|
Marek Rosa
|
r423 | { | ||
|
Tero Ahola
|
r611 | Q_UNUSED(widget) | ||
| Q_UNUSED(option) | ||||
|
Tero Ahola
|
r1346 | |||
|
Miikka Heikkinen
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r2483 | QRectF clipRect = QRectF(QPointF(0, 0), domain()->size()); | ||
|
Tero Ahola
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r1346 | painter->save(); | ||
| painter->setPen(m_linePen); | ||||
|
Miikka Heikkinen
|
r2483 | painter->setBrush(Qt::NoBrush); | ||
| if (m_series->chart()->chartType() == QChart::ChartTypePolar) { | ||||
| qreal halfWidth = domain()->size().width() / 2.0; | ||||
| QRectF clipRectLeft = QRectF(0, 0, halfWidth, domain()->size().height()); | ||||
| QRectF clipRectRight = QRectF(halfWidth, 0, halfWidth, domain()->size().height()); | ||||
| QRegion fullPolarClipRegion(clipRect.toRect(), QRegion::Ellipse); | ||||
| QRegion clipRegionLeft(fullPolarClipRegion.intersected(clipRectLeft.toRect())); | ||||
| QRegion clipRegionRight(fullPolarClipRegion.intersected(clipRectRight.toRect())); | ||||
| painter->setClipRegion(clipRegionLeft); | ||||
| painter->drawPath(m_pathPolarLeft); | ||||
| painter->setClipRegion(clipRegionRight); | ||||
| painter->drawPath(m_pathPolarRight); | ||||
| painter->setClipRegion(fullPolarClipRegion); | ||||
| } else { | ||||
| painter->setClipRect(clipRect); | ||||
| } | ||||
|
Marek Rosa
|
r2256 | |||
|
Titta Heikkala
|
r2781 | reversePainter(painter, clipRect); | ||
|
Tero Ahola
|
r1346 | painter->drawPath(m_path); | ||
|
Miikka Heikkinen
|
r2483 | |||
|
Tero Ahola
|
r1346 | if (m_pointsVisible) { | ||
| painter->setPen(m_pointPen); | ||||
|
Miikka Heikkinen
|
r2483 | if (m_series->chart()->chartType() == QChart::ChartTypePolar) | ||
| painter->drawPoints(m_visiblePoints); | ||||
| else | ||||
| painter->drawPoints(geometryPoints()); | ||||
|
Michal Klocek
|
r580 | } | ||
|
Miikka Heikkinen
|
r2483 | |||
|
Titta Heikkala
|
r2781 | reversePainter(painter, clipRect); | ||
|
Titta Heikkala
|
r2815 | if (m_pointLabelsVisible) { | ||
| if (m_pointLabelsClipping) | ||||
| painter->setClipping(true); | ||||
| else | ||||
| painter->setClipping(false); | ||||
|
Titta Heikkala
|
r2696 | m_series->d_func()->drawSeriesPointLabels(painter, m_points, m_linePen.width() / 2); | ||
|
Titta Heikkala
|
r2815 | } | ||
|
Titta Heikkala
|
r2689 | |||
|
Tero Ahola
|
r1346 | painter->restore(); | ||
|
Marek Rosa
|
r423 | } | ||
|
Marek Rosa
|
r417 | |||
|
Michal Klocek
|
r1218 | void SplineChartItem::mousePressEvent(QGraphicsSceneMouseEvent *event) | ||
| { | ||||
|
Titta Heikkala
|
r2739 | emit XYChart::pressed(domain()->calculateDomainPoint(event->pos())); | ||
| m_lastMousePos = event->pos(); | ||||
| m_mousePressed = true; | ||||
|
Michal Klocek
|
r1747 | QGraphicsItem::mousePressEvent(event); | ||
|
Michal Klocek
|
r1218 | } | ||
|
Michal Klocek
|
r476 | |||
|
Marek Rosa
|
r2256 | void SplineChartItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event) | ||
| { | ||||
|
Michal Klocek
|
r2273 | emit XYChart::hovered(domain()->calculateDomainPoint(event->pos()), true); | ||
|
Marek Rosa
|
r2356 | QGraphicsItem::hoverEnterEvent(event); | ||
|
Marek Rosa
|
r2256 | } | ||
| void SplineChartItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event) | ||||
| { | ||||
|
Michal Klocek
|
r2273 | emit XYChart::hovered(domain()->calculateDomainPoint(event->pos()), false); | ||
|
Marek Rosa
|
r2356 | QGraphicsItem::hoverLeaveEvent(event); | ||
|
Marek Rosa
|
r2256 | } | ||
|
Titta Heikkala
|
r2739 | void SplineChartItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) | ||
| { | ||||
|
Titta Heikkala
|
r2746 | emit XYChart::released(domain()->calculateDomainPoint(m_lastMousePos)); | ||
| if (m_mousePressed) | ||||
| emit XYChart::clicked(domain()->calculateDomainPoint(m_lastMousePos)); | ||||
|
Titta Heikkala
|
r2739 | m_mousePressed = false; | ||
| QGraphicsItem::mouseReleaseEvent(event); | ||||
| } | ||||
| void SplineChartItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) | ||||
| { | ||||
|
Titta Heikkala
|
r2746 | emit XYChart::doubleClicked(domain()->calculateDomainPoint(m_lastMousePos)); | ||
|
Titta Heikkala
|
r2739 | QGraphicsItem::mouseDoubleClickEvent(event); | ||
| } | ||||
|
Marek Rosa
|
r460 | #include "moc_splinechartitem_p.cpp" | ||
|
Marek Rosa
|
r401 | |||
|
Titta Heikkala
|
r2712 | QT_CHARTS_END_NAMESPACE | ||