HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Commit - r1875:431c64e8346f

Refactored donutbreakdown example

Jani Honkonen -

r1875:431c64e8346f

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r1875:431c64e8346f

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examples/donutbreakdown/donutbreakdownchart.cpp created 644 +73 0

@@ -0,0 +1,73
	1	#include "donutbreakdownchart.h"
	2	#include <QPieSlice>
	3
	4	QTCOMMERCIALCHART_USE_NAMESPACE
	5
	6	//![1]
	7	DonutBreakdownChart::DonutBreakdownChart(QGraphicsItem *parent, Qt::WindowFlags wFlags)
	8	:QChart(parent, wFlags)
	9	{
	10	// create the series for main center pie
	11	mainSeries = new QPieSeries();
	12	mainSeries->setPieSize(0.7);
	13	addSeries(mainSeries);
	14	}
	15	//![1]
	16
	17	//![2]
	18	void DonutBreakdownChart::addBreakdownSeries(QPieSeries *breakdownSeries, QColor color)
	19	{
	20	// add breakdown series as a slice to center pie
	21	QPieSlice *slice = mainSeries->append(breakdownSeries->name(), breakdownSeries->sum());
	22
	23	// customize the slice
	24	slice->setBrush(color);
	25	slice->setLabelVisible();
	26	slice->setLabelColor(Qt::white);
	27	slice->setLabelPosition(QPieSlice::LabelInsideHorizontal);
	28
	29	// position and customize the breakdown series
	30	breakdownSeries->setPieSize(0.8);
	31	breakdownSeries->setHoleSize(0.7);
	32	breakdownSeries->setLabelsVisible();
	33	foreach (QPieSlice *slice, breakdownSeries->slices()) {
	34	color = color.lighter(110);
	35	slice->setBrush(color);
	36	slice->setLabelFont(QFont("Arial", 7));
	37	slice->setLabelArmLengthFactor(0.05);
	38	}
	39
	40	// add the series to the chart
	41	addSeries(breakdownSeries);
	42
	43	// recalculate breakdown donut segments
	44	recalculateAngles();
	45	}
	46	//![2]
	47
	48	void DonutBreakdownChart::recalculateAngles()
	49	{
	50	qreal angle = 0;
	51	foreach (QPieSlice *slice, mainSeries->slices()) {
	52	QPieSeries *s = find(slice->label());
	53	if (s) {
	54	s->setPieStartAngle(angle);
	55	angle += slice->percentage() * 360.0;
	56	s->setPieEndAngle(angle);
	57	}
	58	}
	59	}
	60
	61	QPieSeries *DonutBreakdownChart::find(QString seriesName) const
	62	{
	63	// find pieseries by name
	64	foreach (QAbstractSeries *series, this->series()) {
	65	QPieSeries s = qobject_cast<QPieSeries>(series);
	66	if (!s)
	67	continue;
	68	if (s->name() == seriesName)
	69	return s;
	70	}
	71	return 0;
	72	}
	73

examples/donutbreakdown/donutbreakdownchart.h created 644 +23 0

@@ -0,0 +1,23
	1	#ifndef DONUTBREAKDOWNCHART_H
	2	#define DONUTBREAKDOWNCHART_H
	3
	4	#include <QChart>
	5	#include <QPieSeries>
	6
	7	QTCOMMERCIALCHART_USE_NAMESPACE
	8
	9	class DonutBreakdownChart : public QChart
	10	{
	11	public:
	12	DonutBreakdownChart(QGraphicsItem *parent = 0, Qt::WindowFlags wFlags = 0);
	13	void addBreakdownSeries(QPieSeries *series, QColor color);
	14
	15	private:
	16	void recalculateAngles();
	17	QPieSeries *find(QString seriesName) const;
	18
	19	private:
	20	QPieSeries *mainSeries;
	21	};
	22
	23	#endif // DONUTBREAKDOWNCHART_H

examples/donutbreakdown/donutbreakdown.pro +3 -2

             !include( ../examples.pri ) {
              error( "Couldn't find the examples.pri file!" )
             }
             TARGET = donutbreakdown
             SOURCES += main.cpp\
-                    widget.cpp
+                donutbreakdownchart.cpp
-            HEADERS  += widget.h
+            HEADERS  += \
+                donutbreakdownchart.h

examples/donutbreakdown/main.cpp +47 -3

@@ -1,11 +1,55
1	#include <QApplication>	1	#include <QApplication>
2	#include "widget.h"	2	#include <QMainWindow>
		3	#include <QChartView>
		4	#include "donutbreakdownchart.h"
		5
		6	QTCOMMERCIALCHART_USE_NAMESPACE
3		7
4	int main(int argc, char *argv[])	8	int main(int argc, char *argv[])
5	{	9	{
6	QApplication a(argc, argv);	10	QApplication a(argc, argv);
7	Widget w;	11
8	w.show();	12	// Data from http://www.stat.fi/til/ekul/2010/ekul_2010_2011-12-13_tie_001_en.html
		13
		14	//![1]
		15	QPieSeries *series1 = new QPieSeries();
		16	series1->setName("Fossil");
		17	series1->append("Oil", 353295);
		18	series1->append("Wood", 319663);
		19	series1->append("Coal", 188500);
		20	series1->append("Natural gas", 148680);
		21	series1->append("Peat", 94545);
		22
		23	QPieSeries *series2 = new QPieSeries();
		24	series2->setName("Renewable");
		25	series2->append("Hydro power", 45875);
		26	series2->append("Wind power", 1060);
		27
		28	QPieSeries *series3 = new QPieSeries();
		29	series3->setName("Other");
		30	series3->append("Nuclear energy", 238789);
		31	series3->append("Import energy", 37802);
		32	series3->append("Others", 32441);
		33	//![1]
		34
		35	//![2]
		36	DonutBreakdownChart *donutBreakdown = new DonutBreakdownChart();
		37	donutBreakdown->setAnimationOptions(QChart::AllAnimations);
		38	donutBreakdown->setTitle("Total consumption of energy in Finland 2010");
		39	donutBreakdown->legend()->setVisible(false);
		40	donutBreakdown->addBreakdownSeries(series1, Qt::red);
		41	donutBreakdown->addBreakdownSeries(series2, Qt::darkGreen);
		42	donutBreakdown->addBreakdownSeries(series3, Qt::darkBlue);
		43	//![2]
		44
		45	//![3]
		46	QMainWindow window;
		47	QChartView* chartView = new QChartView(donutBreakdown);
		48	chartView->setRenderHint(QPainter::Antialiasing);
		49	window.setCentralWidget(chartView);
		50	window.resize(800, 600);
		51	window.show();
		52	//![3]
9		53
10	return a.exec();	54	return a.exec();
11	}	55	}

examples/donutchart/main.cpp +2 -2

             /****************************************************************************
             **
             ** 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
             ** $QT_END_LICENSE$
             **
             ****************************************************************************/
             #include <QApplication>
             #include <QMainWindow>
             #include <QChartView>
             #include <QPieSeries>
             #include <QPieSlice>
             #include <QDebug>
             QTCOMMERCIALCHART_USE_NAMESPACE
             int main(int argc, char *argv[])
             {
                 QApplication a(argc, argv);
             //![1]
                 QPieSeries *series = new QPieSeries();
                 series->setHoleSize(0.35);
                 series->append("Protein 4.2%", 4.2);
                 QPieSlice *slice = series->append("Fat 15.6%", 15.6);
                 slice->setExploded();
                 slice->setLabelVisible();
                 series->append("Other 23.8%", 23.8);
                 series->append("Carbs 56.4%", 56.4);
             //![1]
             //![2]
                 QChartView* chartView = new QChartView();
                 chartView->setRenderHint(QPainter::Antialiasing);
                 chartView->chart()->setTitle("Donut with a lemon glaze (100g)");
                 chartView->chart()->addSeries(series);
-                chartView->chart()->legend()->setAlignment(Qt::AlignBottom);
+                chartView->chart()->legend()->setAlignment(Qt::AlignLeft);
                 chartView->chart()->setTheme(QChart::ChartThemeBlueCerulean);
-                chartView->chart()->legend()->setFont(QFont("Arial", 7));
+                //chartView->chart()->legend()->setFont(QFont("Arial", 7));
             //![2]
             //![3]
                 QMainWindow window;
                 window.setCentralWidget(chartView);
                 window.resize(400, 300);
                 window.show();
             //![3]
                 return a.exec();
             }

examples/donutbreakdown/widget.cpp removed 0 -139

NO CONTENT: file was removed

examples/donutbreakdown/widget.h removed 0 -30

NO CONTENT: file was removed

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