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74 lines
3.0 KiB
C++
74 lines
3.0 KiB
C++
#include "box_view.h"
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#include <assert.h>
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#include <math.h>
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namespace Statistics {
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BoxView::BoxView(Store * store, ::BannerView * bannerView) :
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CurveView(&m_boxRange, nullptr, bannerView, nullptr, 0.0f, 0.2f, 0.4f, 0.2f),
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m_store(store),
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m_boxRange(BoxRange(store)),
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m_selectedQuantile(Quantile::Min)
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{
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}
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void BoxView::reloadSelection() {
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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])();
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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);
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KDRect dirtyZone(KDRect(selectedValueInPixels-1, pixelLowerBound, 2, pixelUpperBound - pixelLowerBound));
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markRectAsDirty(dirtyZone);
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}
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BoxView::Quantile BoxView::selectedQuantile() {
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return m_selectedQuantile;
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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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reloadSelection();
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m_selectedQuantile = (Quantile)selectedQuantile;
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reloadSelection();
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}
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return true;
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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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drawAxes(ctx, rect, Axis::Horizontal);
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drawLabels(ctx, rect, Axis::Horizontal, false);
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float calculations[5] = {m_store->minValue(), m_store->firstQuartile(), m_store->median(), m_store->thirdQuartile(), m_store->maxValue()};
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float lowBounds[5] = {0.4f, 0.2f, 0.2f, 0.2f, 0.4f};
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float upBounds[5] = {0.6f, 0.8f, 0.8f, 0.8f, 0.6f};
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/* We first 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], lowBounds[k], upBounds[k], KDColorBlack);
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}
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if (isMainViewSelected()) {
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drawSegment(ctx, rect, Axis::Vertical, calculations[(int)m_selectedQuantile], lowBounds[(int)m_selectedQuantile], upBounds[(int)m_selectedQuantile], KDColorRed);
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}
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drawSegment(ctx, rect, Axis::Horizontal, 0.5f, m_store->minValue(), m_store->firstQuartile(), KDColorBlack);
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drawSegment(ctx, rect, Axis::Horizontal, 0.5f, m_store->thirdQuartile(), m_store->maxValue(), KDColorBlack);
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drawSegment(ctx, rect, Axis::Horizontal, 0.2f, m_store->firstQuartile(), m_store->thirdQuartile(), KDColorBlack);
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drawSegment(ctx, rect, Axis::Horizontal, 0.8f, m_store->firstQuartile(), m_store->thirdQuartile(), KDColorBlack);
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}
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char * BoxView::label(Axis axis, int index) const {
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if (axis == Axis::Vertical) {
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return nullptr;
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}
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return (char *)m_labels[index];
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}
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}
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