HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Commit - r69:c7c3c4960b21

Add background to chart...

Michal Klocek -

r69:c7c3c4960b21

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r69:c7c3c4960b21

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example/colorlinechart/colorlinechart.pro created 644 +15 0

@@ -0,0 +1,15
	1	!include( ../../common.pri ) {
	2	error( "Couldn't find the common.pri file!" )
	3	}
	4
	5	!include( ../../integrated.pri ) {
	6	error( "Couldn't find the integrated.pri file !")
	7	}
	8
	9	TARGET = colorlineChart
	10	TEMPLATE = app
	11	QT += core gui
	12	SOURCES += main.cpp
	13
	14
	15

example/colorlinechart/main.cpp created 644 +40 0

@@ -0,0 +1,40
	1	#include <QApplication>
	2	#include <QMainWindow>
	3	#include <qchartview.h>
	4	#include <qxychartseries.h>
	5	#include <qchart.h>
	6	#include <cmath>
	7
	8	QTCOMMERCIALCHART_USE_NAMESPACE
	9
	10	#define PI 3.14159265358979
	11
	12	int main(int argc, char *argv[])
	13	{
	14	QApplication a(argc, argv);
	15
	16	QMainWindow window;
	17
	18	QXYChartSeries* series0 = QXYChartSeries::create();
	19	series0->setColor(Qt::blue);
	20	QXYChartSeries* series1 = QXYChartSeries::create();
	21	series1->setColor(Qt::red);
	22
	23	int numPoints = 100;
	24
	25	for (int x = 0; x <= numPoints; ++x) {
	26	series0->add(x, abs(sin(PI/50x)100));
	27	series1->add(x, abs(cos(PI/50x)100));
	28	}
	29
	30	QChartView* chartView = new QChartView(&window);
	31	chartView->addSeries(series0);
	32	chartView->addSeries(series1);
	33	chartView->setBackgroundColor(Qt::yellow);
	34
	35	window.setCentralWidget(chartView);
	36	window.resize(400, 300);
	37	window.show();
	38
	39	return a.exec();
	40	}

example/example.pro +2 -1

             TEMPLATE = subdirs
             SUBDIRS += linechart \
-                       zoomlinechart
+                       zoomlinechart \
+                       colorlinechart

src/qchart.cpp +23 0

             QTCOMMERCIALCHART_BEGIN_NAMESPACE
             QChart::QChart(QGraphicsObject* parent) : QGraphicsObject(parent),
+                m_background(new QGraphicsRectItem(this)),
+                m_title(new QGraphicsTextItem(this)),
                 m_axisX(new AxisItem(AxisItem::X_AXIS,this)),
                 m_axisY(new AxisItem(AxisItem::Y_AXIS,this)),
                 m_plotDataIndex(0),
                 m_rect = QRect(QPoint(0,0),size);
                 QRect rect = m_rect.adjusted(margin(),margin(), -margin(), -margin());
+                //recalculate background gradient
+                m_background->setRect(rect);
+                m_backgroundGradient.setFinalStop(0,m_background->rect().height());
+                m_background->setBrush(m_backgroundGradient);
+                //resize elements
                 foreach (ChartItem* item ,m_chartItems) {
                     item->setPos(rect.topLeft());
                     item->setSize(rect.size());
                 update();
             }
+            void QChart::setBackgroundColor(const QColor& color)
+            {
+                m_backgroundGradient.setColorAt( 0.0, Qt::white);
+                m_backgroundGradient.setColorAt( 1.0, color);
+                m_background->setBrush(m_backgroundGradient);
+                m_background->setPen(Qt::NoPen);
+                m_background->update();
+            }
+            void QChart::setTitle(const QString& title)
+            {
+                m_title->setPlainText(title);
+            }
             int QChart::margin() const
             {
                 return m_marginSize;

src/qchart.h +7 -1

             #include <qchartglobal.h>
             #include <qchartseries.h>
             #include <QGraphicsObject>
+            #include <QLinearGradient>
             QTCOMMERCIALCHART_BEGIN_NAMESPACE
                 int margin() const;
                 void setTheme(QChart::ChartTheme theme);
+                void setTitle(const QString& title);
+                void setBackgroundColor(const QColor& color);
                 void zoomInToRect(const QRect& rectangle);
                 void zoomIn();
                 void zoomOut();
             private:
                 Q_DISABLE_COPY(QChart)
+                QGraphicsRectItem* m_background;
+                QLinearGradient m_backgroundGradient;
+                QGraphicsTextItem* m_title;
                 AxisItem* m_axisX;
                 AxisItem* m_axisY;
                 QRect m_rect;
                 int m_plotDataIndex;
                 int m_marginSize;
                 QList<QColor> m_themeColors;
                 QList<BarGroup*> m_BarGroupItems;
             };

src/qchartview.cpp +11 0

@@ -63,4 +63,15 int QChartView::margin() const
63	{	63	{
64	return m_chart->margin();	64	return m_chart->margin();
65	}	65	}
		66
		67	void QChartView::setTitle(const QString& title)
		68	{
		69	m_chart->setTitle(title);
		70	}
		71
		72	void QChartView::setBackgroundColor(const QColor& color)
		73	{
		74	m_chart->setBackgroundColor(color);
		75	}
		76
66	QTCOMMERCIALCHART_END_NAMESPACE	77	QTCOMMERCIALCHART_END_NAMESPACE

src/qchartview.h +2 0

                 QChartSeries* createSeries(QChartSeries::QChartSeriesType type);
                 int margin() const;
+                void setTitle(const QString& title);
+                void setBackgroundColor(const QColor& color);
                 void zoomInToRect(const QRect& rectangle);
                 void zoomIn();
                 void zoomOut();

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