LimeReport/limereport/items/charts/lrlineschart.cpp

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#include "lrlineschart.h"
namespace LimeReport {
void LinesChart::paintChart(QPainter *painter, QRectF chartRect)
{
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updateMinAndMaxValues();
const qreal valuesHMargin = this->valuesHMargin(painter);
const qreal valuesVMargin = this->valuesVMargin(painter);
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QRectF calcRect = horizontalLabelsRect(
painter,
chartRect.adjusted(
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hPadding(chartRect) * 2 + valuesHMargin,
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chartRect.height() - (painter->fontMetrics().height() + vPadding(chartRect)*2),
-(hPadding(chartRect) * 2),
-vPadding(chartRect)
)
);
qreal barsShift = calcRect.height();
paintVerticalGrid(
painter,
chartRect.adjusted(
hPadding(chartRect),
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vPadding(chartRect) + valuesVMargin,
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-hPadding(chartRect),
-(vPadding(chartRect) + barsShift)
)
);
paintSerialLines(
painter,
chartRect.adjusted(
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hPadding(chartRect) * 2 + valuesHMargin,
vPadding(chartRect) + valuesVMargin,
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-(hPadding(chartRect) * 2),
-(vPadding(chartRect)+barsShift)
)
);
paintHorizontalLabels(painter, calcRect);
}
void LinesChart::drawDesignMode(QPainter* painter, qreal hStep, qreal vStep, qreal topShift, QRectF barsRect){
for (int i = 0; i < valuesCount()-1; ++i){
QPoint startPoint = QPoint((i+1) * hStep + barsRect.left() - hStep/2,
(maxValue() * vStep+topShift) - designValues()[i] * vStep
);
QPoint endPoint = QPoint((i+2) * hStep + barsRect.left() - hStep/2,
(maxValue() * vStep+topShift) - designValues()[i+1] * vStep
);
drawSegment(painter, startPoint, endPoint, color_map[0]);
startPoint = QPoint((i+1) * hStep + barsRect.left() - hStep/2,
(maxValue() * vStep+topShift) - designValues()[i+3] * vStep
);
endPoint = QPoint((i+2) * hStep + barsRect.left() - hStep/2,
(maxValue() * vStep+topShift) - designValues()[i+3+1] * vStep
);
drawSegment(painter, startPoint, endPoint, color_map[1]);
startPoint = QPoint((i+1) * hStep + barsRect.left() - hStep/2,
(maxValue() * vStep+topShift) - designValues()[i+6] * vStep
);
endPoint = QPoint((i+2) * hStep + barsRect.left() - hStep/2,
(maxValue() * vStep+topShift) - designValues()[i+6+1] * vStep
);
drawSegment(painter, startPoint, endPoint, color_map[2]);
}
}
void LinesChart::paintSerialLines(QPainter* painter, QRectF barsRect)
{
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if (valuesCount() == 0) return;
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painter->save();
painter->setRenderHint(QPainter::Antialiasing,true);
int delta = int(maxValue() - minValue());
delta = genNextValue(delta);
qreal vStep = barsRect.height() / delta;
qreal hStep = barsRect.width() / valuesCount();
qreal topShift = (delta - (maxValue() - minValue())) * vStep +barsRect.top();
if (m_chartItem->itemMode() != DesignMode){
foreach (SeriesItem* series, m_chartItem->series()) {
QPen pen(series->color());
pen.setWidth(4);
painter->setPen(pen);
for (int i = 0; i < series->data()->values().count()-1; ++i ){
QPoint startPoint = QPoint((i+1) * hStep + barsRect.left() - hStep/2,
(maxValue()*vStep+topShift) - series->data()->values().at(i) * vStep);
QPoint endPoint = QPoint((i+2) * hStep + barsRect.left() - hStep/2,
(maxValue() * vStep+topShift) - series->data()->values().at(i+1) * vStep);
drawSegment(painter, startPoint, endPoint, series->color());
}
}
} else {
drawDesignMode(painter, hStep, vStep, topShift, barsRect);
}
painter->restore();
}
} //namespace LimeReport