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#include "charttheme_p.h"
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#include "qchart.h"
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#include "qchartaxis.h"
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#include <QTime>
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//series
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#include "qbarset.h"
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#include "qbarseries.h"
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#include "qstackedbarseries.h"
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#include "qpercentbarseries.h"
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#include "qlineseries.h"
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#include "qareaseries.h"
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#include "qscatterseries.h"
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#include "qpieseries.h"
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#include "qpieslice.h"
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#include "qsplineseries.h"
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//items
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#include "axisitem_p.h"
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#include "barpresenter_p.h"
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#include "stackedbarpresenter_p.h"
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#include "percentbarpresenter_p.h"
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#include "linechartitem_p.h"
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#include "areachartitem_p.h"
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#include "scatterchartitem_p.h"
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#include "piepresenter_p.h"
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#include "splinechartitem_p.h"
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//themes
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#include "chartthemedefault_p.h"
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#include "chartthemevanilla_p.h"
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#include "chartthemeicy_p.h"
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#include "chartthemegrayscale_p.h"
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#include "chartthemescientific_p.h"
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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ChartTheme::ChartTheme(QChart::ChartTheme id)
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{
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m_id = id;
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qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
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}
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ChartTheme* ChartTheme::createTheme(QChart::ChartTheme theme)
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{
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switch(theme) {
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case QChart::ChartThemeVanilla:
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return new ChartThemeVanilla();
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case QChart::ChartThemeIcy:
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return new ChartThemeIcy();
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case QChart::ChartThemeGrayscale:
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return new ChartThemeGrayscale();
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case QChart::ChartThemeScientific:
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return new ChartThemeScientific();
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default:
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return new ChartThemeDefault();
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}
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}
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void ChartTheme::decorate(QChart* chart)
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{
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chart->setChartBackgroundBrush(m_backgroundGradient);
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}
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//TODO helper to by removed later
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void ChartTheme::decorate(ChartItem* item, QSeries* series,int count)
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{
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switch(series->type())
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{
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case QSeries::SeriesTypeLine: {
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QLineSeries* s = static_cast<QLineSeries*>(series);
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LineChartItem* i = static_cast<LineChartItem*>(item);
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decorate(i,s,count);
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break;
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}
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case QSeries::SeriesTypeArea: {
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QAreaSeries* s = static_cast<QAreaSeries*>(series);
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AreaChartItem* i = static_cast<AreaChartItem*>(item);
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decorate(i,s,count);
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break;
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}
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case QSeries::SeriesTypeBar: {
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QBarSeries* b = static_cast<QBarSeries*>(series);
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BarPresenter* i = static_cast<BarPresenter*>(item);
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decorate(i,b,count);
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break;
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}
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case QSeries::SeriesTypeStackedBar: {
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QStackedBarSeries* s = static_cast<QStackedBarSeries*>(series);
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StackedBarPresenter* i = static_cast<StackedBarPresenter*>(item);
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decorate(i,s,count);
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break;
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}
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case QSeries::SeriesTypePercentBar: {
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QPercentBarSeries* s = static_cast<QPercentBarSeries*>(series);
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PercentBarPresenter* i = static_cast<PercentBarPresenter*>(item);
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decorate(i,s,count);
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break;
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}
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case QSeries::SeriesTypeScatter: {
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QScatterSeries* s = qobject_cast<QScatterSeries*>(series);
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Q_ASSERT(s);
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ScatterChartItem* i = static_cast<ScatterChartItem*>(item);
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Q_ASSERT(i);
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decorate(i, s, count);
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break;
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}
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case QSeries::SeriesTypePie: {
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QPieSeries* s = static_cast<QPieSeries*>(series);
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PiePresenter* i = static_cast<PiePresenter*>(item);
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decorate(i,s,count);
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break;
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}
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default:
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qDebug()<<"Wrong item to be decorated by theme";
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break;
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}
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}
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void ChartTheme::decorate(AreaChartItem* item, QAreaSeries* series,int count)
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{
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QPen pen;
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QBrush brush;
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if(pen != series->pen()){
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item->setPen(series->pen());
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}else{
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pen.setColor(m_seriesColors.at(count%m_seriesColors.size()));
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pen.setWidthF(2);
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item->setPen(pen);
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}
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if(brush != series->brush()){
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item->setBrush(series->brush());
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}else{
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QBrush brush(m_seriesColors.at(count%m_seriesColors.size()));
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item->setBrush(brush);
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}
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}
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void ChartTheme::decorate(LineChartItem* item, QLineSeries* series,int count)
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{
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QPen pen;
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if(pen != series->pen()){
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item->setLinePen(series->pen());
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return;
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}
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pen.setColor(m_seriesColors.at(count%m_seriesColors.size()));
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pen.setWidthF(2);
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item->setLinePen(pen);
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}
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void ChartTheme::decorate(BarPresenter* item, QBarSeries* series,int count)
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{
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QList<QBarSet*> sets = series->barSets();
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for (int i=0; i<series->barsetCount(); i++) {
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sets.at(i)->setBrush(QBrush(m_seriesColors.at(i%m_seriesColors.count())));
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}
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}
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void ChartTheme::decorate(StackedBarPresenter* item, QStackedBarSeries* series,int count)
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{
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QList<QBarSet*> sets = series->barSets();
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for (int i=0; i<series->barsetCount(); i++) {
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sets.at(i)->setBrush(QBrush(m_seriesColors.at(i%m_seriesColors.count())));
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}
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}
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void ChartTheme::decorate(PercentBarPresenter* item, QPercentBarSeries* series,int count)
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{
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QList<QBarSet*> sets = series->barSets();
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for (int i=0; i<series->barsetCount(); i++) {
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sets.at(i)->setBrush(QBrush(m_seriesColors.at(i%m_seriesColors.count())));
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}
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}
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void ChartTheme::decorate(ScatterChartItem* item, QScatterSeries* series, int count)
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{
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Q_ASSERT(item);
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Q_ASSERT(series);
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QColor color = m_seriesColors.at(count % m_seriesColors.size());
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// TODO: define alpha in the theme? or in the series?
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//color.setAlpha(120);
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QBrush brush(color, Qt::SolidPattern);
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item->setBrush(Qt::blue);
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QPen pen(brush, 3);
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pen.setColor(color);
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item->setPen(pen);
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}
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void ChartTheme::decorate(PiePresenter* item, QPieSeries* series, int count)
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{
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// create a list of slice colors based on current theme
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int i = 0;
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QList<QColor> colors;
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bool toggle = false;
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while (colors.count() < series->count()) {
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qreal pos = (qreal) colors.count() / (qreal) series->count();
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if (toggle)
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pos += 0.5;
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toggle = !toggle;
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if (pos > 1.0)
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pos = pos - 1.0;
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//qreal pos = (qreal) (qrand() % series->count()) / (qreal) series->count();
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QColor c = colorAt(m_seriesGradients.at(count % m_seriesGradients.size()), pos);
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colors << c;
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}
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// finally update colors
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foreach (QPieSlice* s, series->slices()) {
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QColor c = colors.takeFirst();
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s->setSlicePen(c);
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s->setSliceBrush(c);
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}
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}
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void ChartTheme::decorate(QChartAxis* axis, AxisItem* item)
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{
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//TODO: dummy defults for now
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axis->setLabelsBrush(Qt::black);
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axis->setLabelsPen(Qt::NoPen);
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axis->setShadesPen(Qt::NoPen);
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axis->setShadesOpacity(0.5);
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}
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void ChartTheme::decorate(SplineChartItem* item, QSplineSeries* series, int count)
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{
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Q_ASSERT(item);
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Q_ASSERT(series);
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QPen pen;
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if(pen != series->pen()){
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item->setLinePen(series->pen());
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}else{
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pen.setColor(m_seriesColors.at(count%m_seriesColors.size()));
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pen.setWidthF(series->pen().widthF());
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item->setLinePen(series->pen());
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}
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// QColor color = m_seriesColors.at(count % m_seriesColors.size());
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// TODO: define alpha in the theme? or in the series?
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//color.setAlpha(120);
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// QBrush brush(color, Qt::SolidPattern);
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// presenter->m_markerBrush = brush;
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// QPen pen(brush, 3);
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// pen.setColor(color);
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// presenter->m_markerPen = pen;
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}
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QColor ChartTheme::colorAt(const QColor &start, const QColor &end, qreal pos)
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{
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Q_ASSERT(pos >=0.0 && pos <= 1.0);
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qreal r = start.redF() + ((end.redF() - start.redF()) * pos);
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qreal g = start.greenF() + ((end.greenF() - start.greenF()) * pos);
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qreal b = start.blueF() + ((end.blueF() - start.blueF()) * pos);
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QColor c;
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c.setRgbF(r, g, b);
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return c;
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}
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QColor ChartTheme::colorAt(const QGradient &gradient, qreal pos)
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{
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Q_ASSERT(pos >=0 && pos <= 1.0);
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// another possibility:
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// http://stackoverflow.com/questions/3306786/get-intermediate-color-from-a-gradient
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QGradientStops stops = gradient.stops();
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int count = stops.count();
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// find previous stop relative to position
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QGradientStop prev = stops.first();
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for (int i=0; i<count; i++) {
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QGradientStop stop = stops.at(i);
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if (pos > stop.first)
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prev = stop;
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// given position is actually a stop position?
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if (pos == stop.first) {
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//qDebug() << "stop color" << pos;
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return stop.second;
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}
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}
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// find next stop relative to position
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QGradientStop next = stops.last();
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for (int i=count-1; i>=0; i--) {
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QGradientStop stop = stops.at(i);
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if (pos < stop.first)
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next = stop;
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}
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//qDebug() << "prev" << prev.first << "pos" << pos << "next" << next.first;
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qreal range = next.first - prev.first;
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qreal posDelta = pos - prev.first;
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qreal relativePos = posDelta / range;
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//qDebug() << "range" << range << "posDelta" << posDelta << "relativePos" << relativePos;
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return colorAt(prev.second, next.second, relativePos);
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}
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QTCOMMERCIALCHART_END_NAMESPACE
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