linechartitem.cpp
465 lines
| 20.2 KiB
| text/x-c
|
CppLexer
Miikka Heikkinen
|
r2854 | /**************************************************************************** | ||
Jani Honkonen
|
r794 | ** | ||
|
Miikka Heikkinen
|
r2854 | ** Copyright (C) 2016 The Qt Company Ltd. | ||
| ** Contact: https://www.qt.io/licensing/ | ||||
|
Jani Honkonen
|
r794 | ** | ||
|
Miikka Heikkinen
|
r2854 | ** This file is part of the Qt Charts module of the Qt Toolkit. | ||
|
Jani Honkonen
|
r794 | ** | ||
|
Miikka Heikkinen
|
r2854 | ** $QT_BEGIN_LICENSE:GPL$ | ||
Titta Heikkala
|
r2845 | ** 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 | ||||
|
Miikka Heikkinen
|
r2854 | ** and conditions see https://www.qt.io/terms-conditions. For further | ||
| ** information use the contact form at https://www.qt.io/contact-us. | ||||
| ** | ||||
| ** GNU General Public License Usage | ||||
| ** Alternatively, this file may be used under the terms of the GNU | ||||
| ** General Public License version 3 or (at your option) any later version | ||||
| ** approved by the KDE Free Qt Foundation. The licenses are as published by | ||||
| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 | ||||
| ** included in the packaging of this file. Please review the following | ||||
| ** information to ensure the GNU General Public License requirements will | ||||
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. | ||||
|
Jani Honkonen
|
r794 | ** | ||
|
Titta Heikkala
|
r2845 | ** $QT_END_LICENSE$ | ||
| ** | ||||
|
Miikka Heikkinen
|
r2854 | ****************************************************************************/ | ||
|
Jani Honkonen
|
r794 | |||
|
Titta Heikkala
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r2714 | #include <private/linechartitem_p.h> | ||
| #include <QtCharts/QLineSeries> | ||||
| #include <private/qlineseries_p.h> | ||||
| #include <private/chartpresenter_p.h> | ||||
| #include <private/polardomain_p.h> | ||||
| #include <private/chartthememanager_p.h> | ||||
| #include <private/charttheme_p.h> | ||||
| #include <QtGui/QPainter> | ||||
| #include <QtWidgets/QGraphicsSceneMouseEvent> | ||||
Michal Klocek
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r144 | |||
Titta Heikkala
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
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Michal Klocek
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r21 | |||
Tero Ahola
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r1792 | const qreal mouseEventMinWidth(12); | ||
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Michal Klocek
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r150 | |||
Miikka Heikkinen
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r2483 | LineChartItem::LineChartItem(QLineSeries *series, QGraphicsItem *item) | ||
|
Michal Klocek
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r2273 | : XYChart(series,item), | ||
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Jani Honkonen
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r2097 | m_series(series), | ||
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Miikka Heikkinen
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r2483 | m_pointsVisible(false), | ||
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Titta Heikkala
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r2689 | m_chartType(QChart::ChartTypeUndefined), | ||
| m_pointLabelsVisible(false), | ||||
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Titta Heikkala
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r2695 | m_pointLabelsFormat(series->pointLabelsFormat()), | ||
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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) | ||
|
Michal Klocek
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r21 | { | ||
Marek Rosa
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r2255 | setAcceptHoverEvents(true); | ||
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Titta Heikkala
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r2739 | setFlag(QGraphicsItem::ItemIsSelectable); | ||
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Michal Klocek
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r262 | setZValue(ChartPresenter::LineChartZValue); | ||
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Jani Honkonen
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r2097 | QObject::connect(series->d_func(), SIGNAL(updated()), this, SLOT(handleUpdated())); | ||
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Tero Ahola
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r1342 | QObject::connect(series, SIGNAL(visibleChanged()), this, SLOT(handleUpdated())); | ||
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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())); | ||
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Michal Klocek
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r439 | handleUpdated(); | ||
|
Michal Klocek
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r21 | } | ||
|
Michal Klocek
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r144 | QRectF LineChartItem::boundingRect() const | ||
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Tero Ahola
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r103 | { | ||
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Jani Honkonen
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r2097 | return m_rect; | ||
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Tero Ahola
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r103 | } | ||
|
Michal Klocek
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r85 | |||
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Michal Klocek
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r144 | QPainterPath LineChartItem::shape() const | ||
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Michal Klocek
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r67 | { | ||
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Miikka Heikkinen
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r2483 | return m_shapePath; | ||
|
Michal Klocek
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r131 | } | ||
|
Michal Klocek
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r85 | |||
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Michal Klocek
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r1217 | void LineChartItem::updateGeometry() | ||
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Michal Klocek
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r131 | { | ||
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Miikka Heikkinen
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r2820 | if (m_series->useOpenGL()) { | ||
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Miikka Heikkinen
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r2830 | if (!m_rect.isEmpty()) { | ||
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Miikka Heikkinen
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r2820 | prepareGeometryChange(); | ||
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Miikka Heikkinen
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r2830 | // Changed signal seems to trigger even with empty region | ||
| m_rect = QRectF(); | ||||
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Miikka Heikkinen
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r2820 | } | ||
| update(); | ||||
| return; | ||||
| } | ||||
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Titta Heikkala
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r2818 | // Store the points to a local variable so that the old line gets properly cleared | ||
| // when animation starts. | ||||
| m_linePoints = geometryPoints(); | ||||
| const QVector<QPointF> &points = m_linePoints; | ||||
|
Michal Klocek
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r1217 | |||
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Miikka Heikkinen
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r2483 | if (points.size() == 0) { | ||
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Michal Klocek
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r1269 | prepareGeometryChange(); | ||
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Miikka Heikkinen
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r2483 | m_fullPath = QPainterPath(); | ||
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Miikka Heikkinen
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r2451 | m_linePath = QPainterPath(); | ||
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Michal Klocek
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r1269 | m_rect = QRect(); | ||
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Marek Rosa
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r545 | return; | ||
| } | ||||
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Michal Klocek
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r464 | |||
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Miikka Heikkinen
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r2483 | QPainterPath linePath; | ||
| QPainterPath fullPath; | ||||
| // Use worst case scenario to determine required margin. | ||||
| qreal margin = m_linePen.width() * 1.42; | ||||
|
Michal Klocek
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r464 | |||
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Miikka Heikkinen
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r2483 | // Area series use component line series that aren't necessarily added to the chart themselves, | ||
| // so check if chart type is forced before trying to obtain it from the chart. | ||||
| QChart::ChartType chartType = m_chartType; | ||||
| if (chartType == QChart::ChartTypeUndefined) | ||||
| chartType = m_series->chart()->chartType(); | ||||
|
Michal Klocek
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r1819 | |||
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Miikka Heikkinen
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r2483 | // For polar charts, we need special handling for angular (horizontal) | ||
| // points that are off-grid. | ||||
| if (chartType == QChart::ChartTypePolar) { | ||||
| QPainterPath linePathLeft; | ||||
| QPainterPath linePathRight; | ||||
| QPainterPath *currentSegmentPath = 0; | ||||
| QPainterPath *previousSegmentPath = 0; | ||||
| qreal minX = domain()->minX(); | ||||
| qreal maxX = domain()->maxX(); | ||||
| qreal minY = domain()->minY(); | ||||
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Miikka Heikkinen
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r2491 | QPointF currentSeriesPoint = m_series->at(0); | ||
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Miikka Heikkinen
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r2483 | QPointF currentGeometryPoint = points.at(0); | ||
| QPointF previousGeometryPoint = points.at(0); | ||||
|
Michal Klocek
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r1819 | int size = m_linePen.width(); | ||
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Miikka Heikkinen
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r2483 | bool pointOffGrid = false; | ||
| bool previousPointWasOffGrid = (currentSeriesPoint.x() < minX || currentSeriesPoint.x() > maxX); | ||||
| qreal domainRadius = domain()->size().height() / 2.0; | ||||
| const QPointF centerPoint(domainRadius, domainRadius); | ||||
| if (!previousPointWasOffGrid) { | ||||
| fullPath.moveTo(points.at(0)); | ||||
| if (m_pointsVisible && currentSeriesPoint.y() >= minY) { | ||||
| // Do not draw ellipses for points below minimum Y. | ||||
| linePath.addEllipse(points.at(0), size, size); | ||||
| fullPath.addEllipse(points.at(0), size, size); | ||||
| linePath.moveTo(points.at(0)); | ||||
| fullPath.moveTo(points.at(0)); | ||||
| } | ||||
|
Michal Klocek
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r1819 | } | ||
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Miikka Heikkinen
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r2483 | qreal leftMarginLine = centerPoint.x() - margin; | ||
| qreal rightMarginLine = centerPoint.x() + margin; | ||||
| qreal horizontal = centerPoint.y(); | ||||
|
Michal Klocek
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r464 | |||
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Miikka Heikkinen
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r2489 | // See ScatterChartItem::updateGeometry() for explanation why seriesLastIndex is needed | ||
| const int seriesLastIndex = m_series->count() - 1; | ||||
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Miikka Heikkinen
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r2483 | for (int i = 1; i < points.size(); i++) { | ||
| // Interpolating line fragments would be ugly when thick pen is used, | ||||
| // so we work around it by utilizing three separate | ||||
| // paths for line 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. | ||||
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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) { | ||||
| QPointF intersectionPoint; | ||||
| qreal y; | ||||
| if (pointOffGrid != previousPointWasOffGrid) { | ||||
| if (currentGeometryPoint.x() == previousGeometryPoint.x()) { | ||||
| y = currentGeometryPoint.y() + (currentGeometryPoint.y() - previousGeometryPoint.y()) / 2.0; | ||||
| } else { | ||||
| qreal ratio = (centerPoint.x() - currentGeometryPoint.x()) / (currentGeometryPoint.x() - previousGeometryPoint.x()); | ||||
| y = currentGeometryPoint.y() + (currentGeometryPoint.y() - previousGeometryPoint.y()) * ratio; | ||||
| } | ||||
| intersectionPoint = QPointF(centerPoint.x(), y); | ||||
| } | ||||
| bool dummyOk; // We know points are ok, but this is needed | ||||
Friedemann Kleint
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r2771 | qreal currentAngle = 0; | ||
| qreal previousAngle = 0; | ||||
| if (const PolarDomain *pd = qobject_cast<const PolarDomain *>(domain())) { | ||||
| currentAngle = pd->toAngularCoordinate(currentSeriesPoint.x(), dummyOk); | ||||
| previousAngle = pd->toAngularCoordinate(m_series->at(i - 1).x(), dummyOk); | ||||
| } else { | ||||
| qWarning() << Q_FUNC_INFO << "Unexpected domain: " << domain(); | ||||
| } | ||||
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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 = &linePathRight; | ||||
| } else if ((previousAngle > 360.0 || (previousAngle > 180.0 && previousGeometryPoint.x() > leftMarginLine)) | ||||
| && previousGeometryPoint.y() < horizontal) { | ||||
| currentSegmentPath = &linePathLeft; | ||||
| } else if (previousAngle > 0.0 && previousAngle < 360.0) { | ||||
| currentSegmentPath = &linePath; | ||||
| } else { | ||||
| currentSegmentPath = 0; | ||||
| } | ||||
| if (currentSegmentPath) { | ||||
| if (previousSegmentPath != currentSegmentPath) | ||||
| currentSegmentPath->moveTo(previousGeometryPoint); | ||||
| if (previousPointWasOffGrid) | ||||
| fullPath.moveTo(intersectionPoint); | ||||
| currentSegmentPath->lineTo(centerPoint); | ||||
| fullPath.lineTo(centerPoint); | ||||
| } | ||||
| previousSegmentPath = currentSegmentPath; | ||||
| if ((currentAngle < 0.0 || (currentAngle <= 180.0 && currentGeometryPoint.x() < rightMarginLine)) | ||||
| && currentGeometryPoint.y() < horizontal) { | ||||
| currentSegmentPath = &linePathRight; | ||||
| } else if ((currentAngle > 360.0 || (currentAngle > 180.0 &¤tGeometryPoint.x() > leftMarginLine)) | ||||
| && currentGeometryPoint.y() < horizontal) { | ||||
| currentSegmentPath = &linePathLeft; | ||||
| } else if (currentAngle > 0.0 && currentAngle < 360.0) { | ||||
| currentSegmentPath = &linePath; | ||||
| } else { | ||||
| currentSegmentPath = 0; | ||||
| } | ||||
| if (currentSegmentPath) { | ||||
| if (previousSegmentPath != currentSegmentPath) | ||||
| currentSegmentPath->moveTo(centerPoint); | ||||
| if (!previousSegmentPath) | ||||
| fullPath.moveTo(centerPoint); | ||||
| currentSegmentPath->lineTo(currentGeometryPoint); | ||||
| if (pointOffGrid) | ||||
| fullPath.lineTo(intersectionPoint); | ||||
| else | ||||
| fullPath.lineTo(currentGeometryPoint); | ||||
| } | ||||
| } else { | ||||
| 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 = &linePathRight; | ||||
| } 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 = &linePathLeft; | ||||
| } else { | ||||
| currentSegmentPath = &linePath; | ||||
| } | ||||
| if (currentSegmentPath != previousSegmentPath) | ||||
| currentSegmentPath->moveTo(previousGeometryPoint); | ||||
| if (previousPointWasOffGrid) | ||||
| fullPath.moveTo(intersectionPoint); | ||||
| if (pointOffGrid) | ||||
| fullPath.lineTo(intersectionPoint); | ||||
| else | ||||
| fullPath.lineTo(currentGeometryPoint); | ||||
| currentSegmentPath->lineTo(currentGeometryPoint); | ||||
| } | ||||
| } else { | ||||
| currentSegmentPath = 0; | ||||
| } | ||||
| previousPointWasOffGrid = pointOffGrid; | ||||
| if (m_pointsVisible && !pointOffGrid && currentSeriesPoint.y() >= minY) { | ||||
| linePath.addEllipse(points.at(i), size, size); | ||||
| fullPath.addEllipse(points.at(i), size, size); | ||||
| linePath.moveTo(points.at(i)); | ||||
| fullPath.moveTo(points.at(i)); | ||||
| } | ||||
| previousSegmentPath = currentSegmentPath; | ||||
| previousGeometryPoint = currentGeometryPoint; | ||||
| } | ||||
| m_linePathPolarRight = linePathRight; | ||||
| m_linePathPolarLeft = linePathLeft; | ||||
| // 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 | ||||
| linePath.moveTo(points.at(0)); | ||||
| if (m_pointsVisible) { | ||||
| int size = m_linePen.width(); | ||||
| linePath.addEllipse(points.at(0), size, size); | ||||
| linePath.moveTo(points.at(0)); | ||||
| for (int i = 1; i < points.size(); i++) { | ||||
| linePath.lineTo(points.at(i)); | ||||
| linePath.addEllipse(points.at(i), size, size); | ||||
| linePath.moveTo(points.at(i)); | ||||
| } | ||||
| } else { | ||||
| for (int i = 1; i < points.size(); i++) | ||||
| linePath.lineTo(points.at(i)); | ||||
| } | ||||
| fullPath = linePath; | ||||
| } | ||||
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Tero Ahola
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r1823 | |||
|
Michal Klocek
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r1819 | QPainterPathStroker stroker; | ||
|
Tero Ahola
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r1823 | // QPainter::drawLine does not respect join styles, for example BevelJoin becomes MiterJoin. | ||
| // 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. | ||||
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Miikka Heikkinen
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r2483 | stroker.setWidth(margin); | ||
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Tero Ahola
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r1823 | stroker.setJoinStyle(Qt::MiterJoin); | ||
| stroker.setCapStyle(Qt::SquareCap); | ||||
|
Michal Klocek
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r1821 | stroker.setMiterLimit(m_linePen.miterLimit()); | ||
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Tero Ahola
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r1791 | |||
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Titta Heikkala
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r2603 | QPainterPath checkShapePath = stroker.createStroke(fullPath); | ||
| // Only zoom in if the bounding rects of the paths fit inside int limits. QWidget::update() uses | ||||
| // a region that has to be compatible with QRect. | ||||
| if (checkShapePath.boundingRect().height() <= INT_MAX | ||||
| && checkShapePath.boundingRect().width() <= INT_MAX | ||||
| && linePath.boundingRect().height() <= INT_MAX | ||||
| && linePath.boundingRect().width() <= INT_MAX | ||||
| && fullPath.boundingRect().height() <= INT_MAX | ||||
| && fullPath.boundingRect().width() <= INT_MAX) { | ||||
| prepareGeometryChange(); | ||||
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Tero Ahola
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r1791 | |||
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Titta Heikkala
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r2603 | m_linePath = linePath; | ||
| m_fullPath = fullPath; | ||||
| m_shapePath = checkShapePath; | ||||
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Miikka Heikkinen
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r2483 | |||
|
Titta Heikkala
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r2603 | m_rect = m_shapePath.boundingRect(); | ||
| } else { | ||||
| update(); | ||||
| } | ||||
|
Michal Klocek
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r21 | } | ||
|
Michal Klocek
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r392 | void LineChartItem::handleUpdated() | ||
|
Michal Klocek
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r389 | { | ||
|
Titta Heikkala
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r2689 | // If points visibility has changed, a geometry update is needed. | ||
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Miikka Heikkinen
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r2451 | // Also, if pen changes when points are visible, geometry update is needed. | ||
| bool doGeometryUpdate = | ||||
| (m_pointsVisible != m_series->pointsVisible()) | ||||
| || (m_series->pointsVisible() && (m_linePen != m_series->pen())); | ||||
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Tero Ahola
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r1346 | setVisible(m_series->isVisible()); | ||
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Tero Ahola
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r2067 | setOpacity(m_series->opacity()); | ||
|
Michal Klocek
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r544 | m_pointsVisible = m_series->pointsVisible(); | ||
| m_linePen = m_series->pen(); | ||||
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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(); | ||||
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Titta Heikkala
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r2815 | m_pointLabelsClipping = m_series->pointLabelsClipping(); | ||
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Miikka Heikkinen
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r2451 | if (doGeometryUpdate) | ||
| updateGeometry(); | ||||
|
Michal Klocek
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r139 | update(); | ||
| } | ||||
|
Michal Klocek
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r391 | void LineChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) | ||
| { | ||||
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Tero Ahola
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r611 | Q_UNUSED(widget) | ||
| Q_UNUSED(option) | ||||
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Miikka Heikkinen
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r2820 | if (m_series->useOpenGL()) | ||
| return; | ||||
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Miikka Heikkinen
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r2483 | QRectF clipRect = QRectF(QPointF(0, 0), domain()->size()); | ||
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Tero Ahola
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r1828 | painter->save(); | ||
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Tero Ahola
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r1346 | painter->setPen(m_linePen); | ||
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Miikka Heikkinen
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r2483 | bool alwaysUsePath = false; | ||
| 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_linePathPolarLeft); | ||||
| painter->setClipRegion(clipRegionRight); | ||||
| painter->drawPath(m_linePathPolarRight); | ||||
| painter->setClipRegion(fullPolarClipRegion); | ||||
| alwaysUsePath = true; // required for proper clipping | ||||
| } else { | ||||
| painter->setClipRect(clipRect); | ||||
| } | ||||
|
Michal Klocek
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r1819 | |||
|
Titta Heikkala
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r2781 | reversePainter(painter, clipRect); | ||
|
Michal Klocek
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r1819 | if (m_pointsVisible) { | ||
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Miikka Heikkinen
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r2457 | painter->setBrush(m_linePen.color()); | ||
|
Michal Klocek
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r1819 | painter->drawPath(m_linePath); | ||
|
Jani Honkonen
|
r2097 | } else { | ||
|
Miikka Heikkinen
|
r2457 | painter->setBrush(QBrush(Qt::NoBrush)); | ||
|
Miikka Heikkinen
|
r2483 | if (m_linePen.style() != Qt::SolidLine || alwaysUsePath) { | ||
|
Miikka Heikkinen
|
r2457 | // If pen style is not solid line, always fall back to path painting | ||
| // to ensure proper continuity of the pattern | ||||
| painter->drawPath(m_linePath); | ||||
| } else { | ||||
|
Titta Heikkala
|
r2818 | for (int i(1); i < m_linePoints.size(); i++) | ||
| painter->drawLine(m_linePoints.at(i - 1), m_linePoints.at(i)); | ||||
|
Miikka Heikkinen
|
r2457 | } | ||
|
Michal Klocek
|
r544 | } | ||
|
Miikka Heikkinen
|
r2457 | |||
|
Titta Heikkala
|
r2781 | reversePainter(painter, clipRect); | ||
|
Titta Heikkala
|
r2815 | if (m_pointLabelsVisible) { | ||
| if (m_pointLabelsClipping) | ||||
| painter->setClipping(true); | ||||
| else | ||||
| painter->setClipping(false); | ||||
|
Titta Heikkala
|
r2818 | m_series->d_func()->drawSeriesPointLabels(painter, m_linePoints, m_linePen.width() / 2); | ||
|
Titta Heikkala
|
r2815 | } | ||
|
Titta Heikkala
|
r2689 | |||
|
Tero Ahola
|
r1828 | painter->restore(); | ||
|
Titta Heikkala
|
r2689 | |||
|
Michal Klocek
|
r391 | } | ||
|
Michal Klocek
|
r1218 | void LineChartItem::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 | } | ||
|
Marek Rosa
|
r2255 | void LineChartItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event) | ||
| { | ||||
|
Michal Klocek
|
r2273 | emit XYChart::hovered(domain()->calculateDomainPoint(event->pos()), true); | ||
|
Marek Rosa
|
r2356 | // event->accept(); | ||
| QGraphicsItem::hoverEnterEvent(event); | ||||
|
Marek Rosa
|
r2255 | } | ||
| void LineChartItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event) | ||||
| { | ||||
|
Michal Klocek
|
r2273 | emit XYChart::hovered(domain()->calculateDomainPoint(event->pos()), false); | ||
|
Marek Rosa
|
r2356 | // event->accept(); | ||
| QGraphicsItem::hoverEnterEvent(event); | ||||
|
Marek Rosa
|
r2255 | } | ||
|
Titta Heikkala
|
r2739 | void LineChartItem::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 LineChartItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) | ||||
| { | ||||
|
Titta Heikkala
|
r2746 | emit XYChart::doubleClicked(domain()->calculateDomainPoint(m_lastMousePos)); | ||
|
Titta Heikkala
|
r2739 | QGraphicsItem::mouseDoubleClickEvent(event); | ||
| } | ||||
|
Michal Klocek
|
r144 | #include "moc_linechartitem_p.cpp" | ||
|
Michal Klocek
|
r131 | |||
|
Titta Heikkala
|
r2712 | QT_CHARTS_END_NAMESPACE | ||