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Set reasonable background color for docs toolbar...
Set reasonable background color for docs toolbar Default background color was white, which caused white on white text in linux assistant, which is for some reason unable to render the background picture for the toolbar. The real bug is probably in assistant, but at least with this workaround docs are usable. Task-number: QTRD-1480
Marek Rosa - - Load All Authors

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r2372:d6a999e30ac3
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splinechartitem.cpp
276 lines | 8.3 KiB | text/x-c | CppLexer
/ src / splinechart / splinechartitem.cpp
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Jani Honkonen
Add license headers
 r794 /****************************************************************************
Michal Klocek
Refactor xychartitem -> xychart
 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
** $QT_END_LICENSE$
**
****************************************************************************/
Jani Honkonen
Add license headers
 r794
Marek Rosa
Renamed SplinePresenter to SplineChartItem
 r460 #include "splinechartitem_p.h"
Michal Klocek
Adds big fat pimpl to series classes...
 r938 #include "qsplineseries_p.h"
Michal Klocek
Refactor animation to fit line,spline,scatter...
 r476 #include "chartpresenter_p.h"
Michal Klocek
Refactor animator...
 r1735 #include "splineanimation_p.h"
Marek Rosa
Domains added
 r2275 #include "abstractdomain_p.h"
Marek Rosa
Spline working somewhat
 r401 #include <QPainter>
Michal Klocek
Refactor xychartitem -> xychart
 r1218 #include <QGraphicsSceneMouseEvent>
Marek Rosa
Spline initial
 r295
Marek Rosa
Spline working somewhat
 r401 QTCOMMERCIALCHART_BEGIN_NAMESPACE
Michal Klocek
Refactors internals...
 r2273 SplineChartItem::SplineChartItem(QSplineSeries *series, QGraphicsItem* item)
: XYChart(series,item),
Jani Honkonen
astyle and manual coding style fixes for src-folder
 r2097 m_series(series),
m_pointsVisible(false),
m_animation(0)
Marek Rosa
Spline initial
 r295 {
Marek Rosa
Added hover support to splinechart and updated callout example
 r2256 setAcceptHoverEvents(true);
Michal Klocek
Fixes mouse handling in base class of chartseries
 r1747 setZValue(ChartPresenter::SplineChartZValue);
Jani Honkonen
astyle and manual coding style fixes for src-folder
 r2097 QObject::connect(m_series->d_func(), SIGNAL(updated()), this, SLOT(handleUpdated()));
Tero Ahola
Visible property to abstract series
 r1342 QObject::connect(series, SIGNAL(visibleChanged()), this, SLOT(handleUpdated()));
Tero Ahola
Added opacity property to QAbstractSeries
 r2067 QObject::connect(series, SIGNAL(opacityChanged()), this, SLOT(handleUpdated()));
Michal Klocek
Refactor animation to fit line,spline,scatter...
 r476 handleUpdated();
Marek Rosa
Spline initial
 r295 }
Michal Klocek
Refactor line spline to common xyline...
 r465 QRectF SplineChartItem::boundingRect() const
{
return m_rect;
}
Marek Rosa
Spline initial
 r295
Michal Klocek
Refactor line spline to common xyline...
 r465 QPainterPath SplineChartItem::shape() const
{
Marek Rosa
Added hover support to splinechart and updated callout example
 r2256 QPainterPathStroker stroker;
return stroker.createStroke(m_path);
Michal Klocek
Refactor line spline to common xyline...
 r465 }
Marek Rosa
Spline working somewhat
 r401
Jani Honkonen
more coding style fixes for src-folder...
 r2104 void SplineChartItem::setAnimation(SplineAnimation *animation)
Michal Klocek
Refactors animation handling for xyseries
 r1217 {
Jani Honkonen
astyle and manual coding style fixes for src-folder
 r2097 m_animation = animation;
Michal Klocek
Refactor xychartitem -> xychart
 r1218 XYChart::setAnimation(animation);
Michal Klocek
Refactors animation handling for xyseries
 r1217 }
Jani Honkonen
more coding style fixes for src-folder...
 r2104 ChartAnimation *SplineChartItem::animation() const
Michal Klocek
Refactor animator...
 r1735 {
return m_animation;
}
Michal Klocek
Refactors animation handling for xyseries
 r1217 void SplineChartItem::setControlGeometryPoints(QVector<QPointF>& points)
{
Jani Honkonen
astyle and manual coding style fixes for src-folder
 r2097 m_controlPoints = points;
Michal Klocek
Refactors animation handling for xyseries
 r1217 }
QVector<QPointF> SplineChartItem::controlGeometryPoints() const
{
return m_controlPoints;
}
Jani Honkonen
astyle and manual coding style fixes for src-folder
 r2097 void SplineChartItem::updateChart(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints, int index)
Michal Klocek
Bugfixes for spline vector allocation issues
 r1082 {
Michal Klocek
Improves spline interpolation...
 r622 QVector<QPointF> controlPoints;
Jani Honkonen
astyle and manual coding style fixes for src-folder
 r2097 if (newPoints.count() >= 2)
Marek Rosa
QSplineSeries calculateControlPoints moved to splinechartitem. This way we don't need to deal with controlPoints on logaritmic scale
 r2372 controlPoints = calculateControlPoints(newPoints);
Michal Klocek
Improves spline interpolation...
 r622
Tero Ahola
Minor: extra colons, commented out code
 r1782 if (m_animation)
m_animation->setup(oldPoints, newPoints, m_controlPoints, controlPoints, index);
Michal Klocek
Improves spline interpolation...
 r622
Tero Ahola
Minor: extra colons, commented out code
 r1782 m_points = newPoints;
m_controlPoints = controlPoints;
Michal Klocek
Refactor spline animation handling...
 r1770 setDirty(false);
Jani Honkonen
astyle and manual coding style fixes for src-folder
 r2097 if (m_animation)
Michal Klocek
Refactors axis animation, line animations
 r1241 presenter()->startAnimation(m_animation);
Jani Honkonen
astyle and manual coding style fixes for src-folder
 r2097 else
Michal Klocek
Refactors animation handling for xyseries
 r1217 updateGeometry();
Michal Klocek
Improves spline interpolation...
 r622 }
Michal Klocek
Refactors animation handling for xyseries
 r1217 void SplineChartItem::updateGeometry()
Tero Ahola
Work-around for a bug in Clang compiler
 r946 {
Tero Ahola
Minor: extra colons, commented out code
 r1782 const QVector<QPointF> &points = m_points;
const QVector<QPointF> &controlPoints = m_controlPoints;
Tero Ahola
Work-around for a bug in Clang compiler
 r946
Jani Honkonen
astyle and manual coding style fixes for src-folder
 r2097 if ((points.size() < 2) || (controlPoints.size() < 2)) {
prepareGeometryChange();
Marek Rosa
XYSeries model support refactored
 r1085 m_path = QPainterPath();
Michal Klocek
adds QLineAnimation fixes
 r1271 m_rect = QRect();
Marek Rosa
Added support for adding and removing data with model. Updated the example
 r545 return;
}
Marek Rosa
Spline somewhat working
 r423
Jani Honkonen
astyle and manual coding style fixes for src-folder
 r2097 Q_ASSERT(points.count() * 2 - 2 == controlPoints.count());
Michal Klocek
Improves spline interpolation...
 r622
QPainterPath splinePath(points.at(0));
Marek Rosa
Spline somewhat working
 r423
sauimone
minor code review issues. indent, spaces, brackets etc.
 r743 for (int i = 0; i < points.size() - 1; i++) {
Jani Honkonen
more coding style fixes for src-folder...
 r2104 const QPointF &point = points.at(i + 1);
Jani Honkonen
astyle and manual coding style fixes for src-folder
 r2097 splinePath.cubicTo(controlPoints[2 * i], controlPoints[2 * i + 1], point);
Marek Rosa
Spline somewhat working
 r423 }
prepareGeometryChange();
Marek Rosa
Added hover support to splinechart and updated callout example
 r2256 // QPainterPathStroker stroker;
// stroker.setWidth(m_linePen.width() / 2.0);
// m_path = stroker.createStroke(splinePath);
Marek Rosa
Spline somewhat working
 r423 m_path = splinePath;
m_rect = splinePath.boundingRect();
Michal Klocek
Refactors internals...
 r2273
Michal Klocek
Refactor line spline to common xyline...
 r465 }
Marek Rosa
QSplineSeries calculateControlPoints moved to splinechartitem. This way we don't need to deal with controlPoints on logaritmic scale
 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
Refactor animation to fit line,spline,scatter...
 r476 //handlers
void SplineChartItem::handleUpdated()
{
Tero Ahola
Fixed isVisible implementation in XY series
 r1346 setVisible(m_series->isVisible());
Tero Ahola
Added opacity property to QAbstractSeries
 r2067 setOpacity(m_series->opacity());
Michal Klocek
Adds visible points handling to spline
 r580 m_pointsVisible = m_series->pointsVisible();
m_linePen = m_series->pen();
m_pointPen = m_series->pen();
Jani Honkonen
astyle and manual coding style fixes for src-folder
 r2097 m_pointPen.setWidthF(2 * m_pointPen.width());
Michal Klocek
Refactor animation to fit line,spline,scatter...
 r476 update();
}
//painter
Michal Klocek
Refactor line spline to common xyline...
 r465
Marek Rosa
Renamed SplinePresenter to SplineChartItem
 r460 void SplineChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
Marek Rosa
Spline somewhat working
 r423 {
Tero Ahola
Squashed bunch of warnings
 r611 Q_UNUSED(widget)
Q_UNUSED(option)
Tero Ahola
Fixed isVisible implementation in XY series
 r1346
painter->save();
Michal Klocek
Refactors internals...
 r2273 painter->setClipRect(QRectF(QPointF(0,0),domain()->size()));
Tero Ahola
Fixed isVisible implementation in XY series
 r1346 painter->setPen(m_linePen);
Marek Rosa
Added hover support to splinechart and updated callout example
 r2256 // painter->setBrush(m_linePen.color());
Tero Ahola
Fixed isVisible implementation in XY series
 r1346 painter->drawPath(m_path);
if (m_pointsVisible) {
painter->setPen(m_pointPen);
painter->drawPoints(geometryPoints());
Michal Klocek
Adds visible points handling to spline
 r580 }
Tero Ahola
Fixed isVisible implementation in XY series
 r1346 painter->restore();
Marek Rosa
Spline somewhat working
 r423 }
Marek Rosa
Experimenting
 r417
Michal Klocek
Refactor xychartitem -> xychart
 r1218 void SplineChartItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
Michal Klocek
Refactors internals...
 r2273 emit XYChart::clicked(domain()->calculateDomainPoint(event->pos()));
Michal Klocek
Fixes mouse handling in base class of chartseries
 r1747 QGraphicsItem::mousePressEvent(event);
Michal Klocek
Refactor xychartitem -> xychart
 r1218 }
Michal Klocek
Refactor animation to fit line,spline,scatter...
 r476
Marek Rosa
Added hover support to splinechart and updated callout example
 r2256 void SplineChartItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
Michal Klocek
Refactors internals...
 r2273 emit XYChart::hovered(domain()->calculateDomainPoint(event->pos()), true);
Marek Rosa
Negative values with log axis handled
 r2356 QGraphicsItem::hoverEnterEvent(event);
Marek Rosa
Added hover support to splinechart and updated callout example
 r2256 }
void SplineChartItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
Michal Klocek
Refactors internals...
 r2273 emit XYChart::hovered(domain()->calculateDomainPoint(event->pos()), false);
Marek Rosa
Negative values with log axis handled
 r2356 QGraphicsItem::hoverLeaveEvent(event);
Marek Rosa
Added hover support to splinechart and updated callout example
 r2256 }
Marek Rosa
Renamed SplinePresenter to SplineChartItem
 r460 #include "moc_splinechartitem_p.cpp"
Marek Rosa
Spline working somewhat
 r401
QTCOMMERCIALCHART_END_NAMESPACE