##// END OF EJS Templates
Clear background when there is only pie chart.
Clear background when there is only pie chart.

File last commit:

r278:1d8f8b316dca
r293:c84fc5fb7b13
Show More
charttheme.cpp
229 lines | 6.9 KiB | text/x-c | CppLexer
#include "charttheme_p.h"
#include "qchart.h"
#include "qchartaxis.h"
//series
#include "qbarset.h"
#include "qbarchartseries.h"
#include "qstackedbarchartseries.h"
#include "qpercentbarchartseries.h"
#include "qlinechartseries.h"
#include "qscatterseries.h"
#include "qpieseries.h"
#include "qpieslice.h"
//items
#include "axisitem_p.h"
#include "barpresenter.h"
#include "stackedbarpresenter.h"
#include "linechartitem_p.h"
#include "percentbarpresenter.h"
#include "scatterpresenter_p.h"
#include "piepresenter.h"
//themes
#include "chartthemevanilla_p.h"
#include "chartthemeicy_p.h"
#include "chartthemegrayscale_p.h"
#include "chartthemescientific_p.h"
QTCOMMERCIALCHART_BEGIN_NAMESPACE
/* TODO
case QChart::ChartThemeUnnamed1:
m_seriesThemes.append(SeriesTheme(QColor(QRgb(0xff3fa9f5)), 2));
m_seriesThemes.append(SeriesTheme(QColor(QRgb(0xff7AC943)), 2));
m_seriesThemes.append(SeriesTheme(QColor(QRgb(0xffFF931E)), 2));
m_seriesThemes.append(SeriesTheme(QColor(QRgb(0xffFF1D25)), 2));
m_seriesThemes.append(SeriesTheme(QColor(QRgb(0xffFF7BAC)), 2));
m_gradientStartColor = QColor(QRgb(0xfff3dc9e));
m_gradientEndColor = QColor(QRgb(0xffafafaf));
*/
ChartTheme::ChartTheme(QChart::ChartTheme id)
{
m_id = id;
m_seriesColor.append(QRgb(0xff000000));
m_seriesColor.append(QRgb(0xff707070));
m_gradientStartColor = QColor(QRgb(0xffffffff));
m_gradientEndColor = QColor(QRgb(0xffafafaf));
}
ChartTheme* ChartTheme::createTheme(QChart::ChartTheme theme)
{
switch(theme) {
case QChart::ChartThemeDefault:
return new ChartTheme();
case QChart::ChartThemeVanilla:
return new ChartThemeVanilla();
case QChart::ChartThemeIcy:
return new ChartThemeIcy();
case QChart::ChartThemeGrayscale:
return new ChartThemeGrayscale();
case QChart::ChartThemeScientific:
return new ChartThemeScientific();
}
}
void ChartTheme::decorate(QChart* chart)
{
QLinearGradient backgroundGradient;
backgroundGradient.setColorAt(0.0, m_gradientStartColor);
backgroundGradient.setColorAt(1.0, m_gradientEndColor);
backgroundGradient.setCoordinateMode(QGradient::ObjectBoundingMode);
chart->setChartBackgroundBrush(backgroundGradient);
}
//TODO helper to by removed later
void ChartTheme::decorate(ChartItem* item, QChartSeries* series,int count)
{
switch(series->type())
{
case QChartSeries::SeriesTypeLine: {
QLineChartSeries* s = static_cast<QLineChartSeries*>(series);
LineChartItem* i = static_cast<LineChartItem*>(item);
decorate(i,s,count);
break;
}
case QChartSeries::SeriesTypeBar: {
QBarChartSeries* b = static_cast<QBarChartSeries*>(series);
BarPresenter* i = static_cast<BarPresenter*>(item);
decorate(i,b,count);
break;
}
case QChartSeries::SeriesTypeStackedBar: {
QStackedBarChartSeries* s = static_cast<QStackedBarChartSeries*>(series);
StackedBarPresenter* i = static_cast<StackedBarPresenter*>(item);
decorate(i,s,count);
break;
}
case QChartSeries::SeriesTypePercentBar: {
QPercentBarChartSeries* s = static_cast<QPercentBarChartSeries*>(series);
PercentBarPresenter* i = static_cast<PercentBarPresenter*>(item);
decorate(i,s,count);
break;
}
case QChartSeries::SeriesTypeScatter: {
QScatterSeries* s = qobject_cast<QScatterSeries*>(series);
Q_ASSERT(s);
ScatterPresenter* i = static_cast<ScatterPresenter*>(item);
Q_ASSERT(i);
decorate(i, s, count);
break;
}
case QChartSeries::SeriesTypePie: {
QPieSeries* s = static_cast<QPieSeries*>(series);
PiePresenter* i = static_cast<PiePresenter*>(item);
decorate(i,s,count);
break;
}
default:
qDebug()<<"Wrong item to be decorated by theme";
break;
}
}
void ChartTheme::decorate(LineChartItem* item, QLineChartSeries* series,int count)
{
QPen pen;
if(pen != series->pen()){
item->setPen(series->pen());
return;
}
pen.setColor(m_seriesColor.at(count%m_seriesColor.size()));
pen.setWidthF(2);
item->setPen(pen);
}
void ChartTheme::decorate(BarPresenter* item, QBarChartSeries* series,int count)
{
for (int i=0; i<series->countSets(); i++) {
series->nextSet(0==i)->setBrush(QBrush(m_seriesColor.at(i%m_seriesColor.count())));
}
}
void ChartTheme::decorate(StackedBarPresenter* item, QStackedBarChartSeries* series,int count)
{
for (int i=0; i<series->countSets(); i++) {
series->nextSet(0==i)->setBrush(QBrush(m_seriesColor.at(i%m_seriesColor.count())));
}
}
void ChartTheme::decorate(PercentBarPresenter* item, QPercentBarChartSeries* series,int count)
{
for (int i=0; i<series->countSets(); i++) {
series->nextSet(0==i)->setBrush(QBrush(m_seriesColor.at(i%m_seriesColor.count())));
}
}
void ChartTheme::decorate(ScatterPresenter* presenter, QScatterSeries* series, int count)
{
Q_ASSERT(presenter);
Q_ASSERT(series);
QColor color = m_seriesColor.at(count % m_seriesColor.size());
// TODO: define alpha in the theme? or in the series?
//color.setAlpha(120);
QBrush brush(color, Qt::SolidPattern);
presenter->m_markerBrush = brush;
QPen pen(brush, 3);
pen.setColor(color);
presenter->m_markerPen = pen;
}
void ChartTheme::decorate(PiePresenter* item, QPieSeries* series, int /*count*/)
{
// create a list of slice colors based on current theme
int i = 0;
QList<QColor> colors;
while (colors.count() < series->count()) {
// get base color
QColor c = m_seriesColor[i++];
i = i % m_seriesColor.count();
// -1 means achromatic color -> cannot manipulate lightness
// TODO: find a better way to randomize lightness
if (c.toHsv().hue() == -1)
qWarning() << "ChartTheme::decorate() warning: achromatic theme color";
// randomize lightness
qreal f = 50 + (qrand() % 100); // 50 is 50% darker, 100 is the same, 150 is 50% lighter
c = c.lighter(f);
// find duplicates
bool isUnique = true;
foreach (QColor color, colors) {
if (c == color)
isUnique = false;
}
// add to array if unique
//if (isUnique)
colors << c;
}
// finally update colors
foreach (QPieSlice* s, series->slices()) {
s->setPen(QPen(Qt::black)); // TODO: get from theme
s->setBrush(colors.takeFirst());
}
}
void ChartTheme::decorate(QChartAxis* axis,AxisItem* item)
{
//TODO: dummy defults for now
axis->setLabelsBrush(Qt::black);
axis->setLabelsPen(Qt::NoPen);
axis->setShadesPen(Qt::NoPen);
axis->setShadesOpacity(0.5);
}
QTCOMMERCIALCHART_END_NAMESPACE