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Initial commit for gdpBarChart example.
Initial commit for gdpBarChart example.

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charttheme.cpp
247 lines | 7.6 KiB | text/x-c | CppLexer
#include "charttheme_p.h"
#include "qchart.h"
#include "qchartaxis.h"
//series
#include "barchartseries.h"
#include "stackedbarchartseries.h"
#include "percentbarchartseries.h"
#include "qlinechartseries.h"
#include "qscatterseries.h"
#include "qpieseries.h"
//items
#include "axisitem_p.h"
#include "bargroup.h"
#include "stackedbargroup.h"
#include "linechartitem_p.h"
#include "percentbargroup.h"
#include "scatterpresenter.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: {
BarChartSeries* b = static_cast<BarChartSeries*>(series);
BarGroup* i = static_cast<BarGroup*>(item);
decorate(i,b,count);
break;
}
case QChartSeries::SeriesTypeStackedBar: {
StackedBarChartSeries* s = static_cast<StackedBarChartSeries*>(series);
StackedBarGroup* i = static_cast<StackedBarGroup*>(item);
decorate(i,s,count);
break;
}
case QChartSeries::SeriesTypePercentBar: {
PercentBarChartSeries* s = static_cast<PercentBarChartSeries*>(series);
PercentBarGroup* i = static_cast<PercentBarGroup*>(item);
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(BarGroup* item, BarChartSeries* series,int count)
{
// TODO: better way to descide series color and remove hard coded colors.
item->resetBrushes();
for (int i=0; i<m_seriesColor.count(); i++) {
QBrush brush(m_seriesColor.at(i));
item->addBrush(brush);
}
item->addBrush(QBrush(QColor(255,0,0,128)));
item->addBrush(QBrush(QColor(255,255,0,128)));
item->addBrush(QBrush(QColor(0,255,0,128)));
item->addBrush(QBrush(QColor(0,0,255,128)));
item->addBrush(QBrush(QColor(255,128,0,128)));
}
void ChartTheme::decorate(StackedBarGroup* item, StackedBarChartSeries* series,int count)
{
// TODO: better way to descide series color and remove hard coded colors.
item->resetBrushes();
for (int i=0; i<m_seriesColor.count(); i++) {
QBrush brush(m_seriesColor.at(i));
item->addBrush(brush);
}
item->addBrush(QBrush(QColor(255,0,0,128)));
item->addBrush(QBrush(QColor(255,255,0,128)));
item->addBrush(QBrush(QColor(0,255,0,128)));
item->addBrush(QBrush(QColor(0,0,255,128)));
item->addBrush(QBrush(QColor(255,128,0,128)));
}
void ChartTheme::decorate(PercentBarGroup* item, PercentBarChartSeries* series,int count)
{
// TODO: better way to descide series color and remove hard coded colors.
item->resetBrushes();
for (int i=0; i<m_seriesColor.count(); i++) {
QBrush brush(m_seriesColor.at(i));
item->addBrush(brush);
}
item->addBrush(QBrush(QColor(255,0,0,128)));
item->addBrush(QBrush(QColor(255,255,0,128)));
item->addBrush(QBrush(QColor(0,255,0,128)));
item->addBrush(QBrush(QColor(0,0,255,128)));
item->addBrush(QBrush(QColor(255,128,0,128)));
}
void ChartTheme::decorate(ScatterPresenter* presenter, QScatterSeries* series, int count)
{
Q_ASSERT(presenter);
Q_ASSERT(series);
presenter->m_markerPen.setColor(m_seriesColor.at(count % m_seriesColor.size()));
// 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(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 (QPieSliceId id, series->ids()) {
QPieSlice s = series->slice(id);
s.setPen(QPen(Qt::black)); // TODO: get from theme
s.setBrush(colors.takeFirst());
series->update(s);
}
}
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);
item->handleAxisChanged(axis);
}
QTCOMMERCIALCHART_END_NAMESPACE