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/**
* Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
*
* This file is part of the KD Chart library.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <QStandardItemModel>
#include <KChartChart>
#include <KChartGridAttributes>
#include <KChartFrameAttributes>
#include <KChartTextAttributes>
#include <KChartDataValueAttributes>
#include <KChartMarkerAttributes>
#include <KChartPlotter>
#include <KChartLegend>
#include <KChartBackgroundAttributes>
#include <QApplication>
int main(int argc, char *argv[]) {
QApplication a(argc, argv);
KChart::Chart chart;
QStandardItemModel model;
model.setRowCount(100);
model.setColumnCount(6); // 3 data sets
for (int i=0; i<100; ++i) {
// dateset 1
qreal t = i;
qreal v = qreal(i)*i;
QModelIndex index = model.index( i, 0 );
model.setData( index, QVariant( t ) );
index = model.index( i, 1 );
model.setData( index, QVariant( v ) );
// dateset 2
t = i*2;
v = qreal(i)*i-i;
index = model.index( i, 2 );
model.setData( index, QVariant( t ) );
index = model.index( i, 3 );
model.setData( index, QVariant( v ) );
// dateset 3
t = qreal(i)/2;
v = qreal(i)*i+i;
index = model.index( i, 4 );
model.setData( index, QVariant( t ) );
index = model.index( i, 5 );
model.setData( index, QVariant( v ) );
}
model.setHeaderData( 0, Qt::Horizontal, "Dataset 1" );
model.setHeaderData( 2, Qt::Horizontal, "Dataset 2" );
model.setHeaderData( 4, Qt::Horizontal, "Dataset 3" );
// general chart layout
KChart::FrameAttributes fm = chart.frameAttributes();
fm.setVisible(true);
fm.setPen( QPen(Qt::black) );
chart.setFrameAttributes(fm);
chart.setGlobalLeading( 10, 0, 10, 10 );
KChart::BackgroundAttributes chart_bg;
chart_bg.setBrush(Qt::white);
chart_bg.setVisible(true);
chart.setBackgroundAttributes(chart_bg);
// coordinate plane setup
KChart::AbstractCoordinatePlane * plane1 = chart.coordinatePlane();
plane1->setRubberBandZoomingEnabled(true);
// create cartesian diagrams
KChart::Plotter * plotter = new KChart::Plotter;
plotter->setHidden( 0, true );
plotter->setAntiAliasing(false);
plotter->setModel( &model );
plane1->replaceDiagram( plotter );
// customize grids
KChart::CartesianCoordinatePlane * cp1 = static_cast<KChart::CartesianCoordinatePlane *>(plane1);
KChart::GridAttributes gv = cp1->gridAttributes( Qt::Vertical );
QPen gridPen(QColor(200,100,100));
gridPen.setStyle(Qt::DashLine);
gv.setGridPen(gridPen);
gridPen.setStyle(Qt::DotLine);
gridPen.setColor( QColor(255,155,155) );
gv.setSubGridPen(gridPen);
cp1->setGridAttributes( Qt::Vertical, gv );
// axis
KChart::CartesianAxis * xAxis = new KChart::CartesianAxis( plotter );
xAxis->setPosition( KChart::CartesianAxis::Bottom );
xAxis->setTitleText("X-Title");
KChart::TextAttributes att = xAxis->titleTextAttributes();
QFont f = att.font();
f.setBold(true);
att.setFont(f);
att.setAutoShrink(true);
att.setFontSize( KChart::Measure(16) );
xAxis->setTitleTextAttributes(att);
KChart::CartesianAxis * y1Axis = new KChart::CartesianAxis( plotter );
y1Axis->setPosition( KChart::CartesianAxis::Left );
y1Axis->setTitleText("Y-Title");
att = y1Axis->titleTextAttributes();
f = att.font();
f.setBold(true);
att.setFont(f);
att.setAutoShrink(true);
att.setFontSize( KChart::Measure(16) );
y1Axis->setTitleTextAttributes(att);
// add the axis to the plotter
plotter->addAxis( xAxis );
plotter->addAxis( y1Axis );
// create legend
KChart::Legend * legend = new KChart::Legend( plotter, &chart );
chart.addLegend( legend );
att = legend->textAttributes();
f = att.font();
f.setBold(false);
att.setFont(f);
att.setAutoShrink(true);
att.setFontSize( KChart::Measure(16) );
legend->setTextAttributes(att);
legend->setPosition( KChart::Position::East );
legend->setAlignment( Qt::AlignCenter );
legend->setTitleText( "Curves" );
att = legend->titleTextAttributes();
f = att.font();
f.setBold(true);
att.setFont(f);
att.setAutoShrink(true);
att.setFontSize( KChart::Measure(16) );
legend->setTitleTextAttributes(att);
KChart::BackgroundAttributes legend_bg;
legend_bg.setBrush(Qt::white);
legend_bg.setVisible(true);
legend->setBackgroundAttributes(legend_bg);
KChart::DataValueAttributes attr = plotter->dataValueAttributes();
KChart::TextAttributes tattr = attr.textAttributes();
tattr.setRotation( 0 );
attr.setTextAttributes( tattr );
plotter->setDataValueAttributes( attr );
// customize marker properties
// Dataset 1 : green, MarkerRing, no line
QColor SERIES_1_OUTLINE = QColor(0,128,0);
attr = plotter->dataValueAttributes(0);
KChart::MarkerAttributes mattr = attr.markerAttributes();
mattr.setMarkerColor(SERIES_1_OUTLINE);
mattr.setMarkerStyle(KChart::MarkerAttributes::MarkerRing);
mattr.setMarkerSize(QSizeF(6.0, 6.0));
mattr.setVisible(true);
attr.setMarkerAttributes(mattr);
attr.setVisible(true);
plotter->setDataValueAttributes(0, attr);
plotter->setPen(0, Qt::NoPen);
// Dataset 2 : MarkerDiamond, (black outline, red inside), no line
QColor SERIES_2_INSIDE = QColor(255,100,100);
attr = plotter->dataValueAttributes(1);
mattr = attr.markerAttributes();
mattr.setMarkerColor(SERIES_2_INSIDE);
mattr.setMarkerStyle(KChart::MarkerAttributes::MarkerDiamond);
mattr.setMarkerSize(QSizeF(8.0, 8.0));
mattr.setVisible(true);
attr.setMarkerAttributes(mattr);
attr.setVisible(true);
plotter->setDataValueAttributes(1, attr);
plotter->setPen(1, Qt::NoPen);
// Dataset 3 : MarkerCircle, (green outline, yellow inside), blue line
QColor SERIES_3_INSIDE = QColor("yellow");
QColor SERIES_3_LINE = QColor("navy");
attr = plotter->dataValueAttributes(2);
mattr = attr.markerAttributes();
mattr.setMarkerColor(SERIES_3_INSIDE);
mattr.setMarkerStyle(KChart::MarkerAttributes::MarkerCircle);
mattr.setMarkerSize(QSizeF(8.0, 8.0));
mattr.setVisible(true);
attr.setMarkerAttributes(mattr);
attr.setVisible(true);
plotter->setDataValueAttributes(2, attr);
plotter->setPen(2, QPen(SERIES_3_LINE));
chart.show();
return a.exec();
}
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