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90 lines
3.5 KiB
C++
90 lines
3.5 KiB
C++
#include "box_view.h"
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#include <assert.h>
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#include <cmath>
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using namespace Shared;
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namespace Statistics {
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BoxView::BoxView(Store * store, int series, Shared::BannerView * bannerView, Quantile * selectedQuantile, KDColor color) :
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CurveView(&m_boxRange, nullptr, bannerView, nullptr),
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m_store(store),
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m_boxRange(BoxRange(store)),
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m_labels{},
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m_series(series),
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m_selectedQuantile(selectedQuantile),
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m_selectedHistogramColor(color),
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m_displayAxis(true)
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{
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}
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bool BoxView::selectQuantile(int selectedQuantile) {
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if (selectedQuantile < 0 || selectedQuantile > 4) {
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return false;
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}
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if ((int)*m_selectedQuantile != selectedQuantile) {
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reload();
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*m_selectedQuantile = (Quantile)selectedQuantile;
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reload();
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}
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return true;
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}
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void BoxView::reload() {
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CurveView::reload();
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CalculPointer calculationMethods[5] = {&Store::minValue, &Store::firstQuartile, &Store::median, &Store::thirdQuartile,
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&Store::maxValue};
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float calculation = (m_store->*calculationMethods[(int)*m_selectedQuantile])(m_series);
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float pixelUpperBound = floatToPixel(Axis::Vertical, 0.2f)+1;
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float pixelLowerBound = floatToPixel(Axis::Vertical, 0.8)-1;
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float selectedValueInPixels = floatToPixel(Axis::Horizontal, calculation)-1;
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KDRect dirtyZone(KDRect(selectedValueInPixels, pixelLowerBound, 4, pixelUpperBound - pixelLowerBound));
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markRectAsDirty(dirtyZone);
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}
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void BoxView::drawRect(KDContext * ctx, KDRect rect) const {
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ctx->fillRect(rect, KDColorWhite);
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if (m_displayAxis) {
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drawAxes(ctx, rect, Axis::Horizontal);
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drawLabels(ctx, rect, Axis::Horizontal, false);
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}
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// TODO : recompute drawing position without axis
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float lowBound = 0.35f;
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float upBound = 0.65f;
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double minVal = m_store->minValue(m_series);
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double firstQuart = m_store->firstQuartile(m_series);
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double thirdQuart = m_store->thirdQuartile(m_series);
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double maxVal = m_store->maxValue(m_series);
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// Draw the main box
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KDCoordinate firstQuartilePixels = std::round(floatToPixel(Axis::Horizontal, firstQuart));
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KDCoordinate thirdQuartilePixels = std::round(floatToPixel(Axis::Horizontal, thirdQuart));
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KDCoordinate lowBoundPixel = std::round(floatToPixel(Axis::Vertical, upBound));
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KDCoordinate upBoundPixel = std::round(floatToPixel(Axis::Vertical, lowBound));
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ctx->fillRect(KDRect(firstQuartilePixels, lowBoundPixel, thirdQuartilePixels - firstQuartilePixels+2,
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upBoundPixel-lowBoundPixel), Palette::GreyWhite);
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// Draw the horizontal lines linking the box to the extreme bounds
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drawSegment(ctx, rect, Axis::Horizontal, 0.5f, minVal, firstQuart, Palette::GreyDark);
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drawSegment(ctx, rect, Axis::Horizontal, 0.5f, thirdQuart, maxVal, Palette::GreyDark);
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double calculations[5] = {minVal, firstQuart, m_store->median(m_series), thirdQuart, maxVal};
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/* We then draw all the vertical lines of the box and then recolor the
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* the selected quantile (if there is one). As two quantiles can have the same
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* value, we cannot choose line colors and then color only once the vertical
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* lines. This solution could hide the highlighed line by coloring the next
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* quantile if it has the same value. */
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for (int k = 0; k < 5; k++) {
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drawSegment(ctx, rect, Axis::Vertical, calculations[k], lowBound, upBound, Palette::GreyMiddle, 2);
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}
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if (isMainViewSelected()) {
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drawSegment(ctx, rect, Axis::Vertical, calculations[(int)*m_selectedQuantile], lowBound, upBound, Palette::YellowDark, 2);
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}
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}
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char * BoxView::label(Axis axis, int index) const {
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return axis == Axis::Vertical ? nullptr : (char *)m_labels[index];
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}
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}
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