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737393072e
life cycle (viewWillAppear, didEnterResponderChain) This fixes the histogram labels when a serie is added
274 lines
10 KiB
C++
274 lines
10 KiB
C++
#include "histogram_controller.h"
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#include "../apps_container.h"
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#include "../shared/poincare_helpers.h"
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#include "app.h"
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#include <cmath>
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#include <assert.h>
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#include <float.h>
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using namespace Poincare;
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using namespace Shared;
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namespace Statistics {
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static inline float min(float x, float y) { return (x<y ? x : y); }
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static inline float max(float x, float y) { return (x>y ? x : y); }
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HistogramController::HistogramController(Responder * parentResponder, ButtonRowController * header, Store * store, uint32_t * storeVersion, uint32_t * barVersion, uint32_t * rangeVersion, int * selectedBarIndex, int * selectedSeriesIndex) :
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MultipleDataViewController(parentResponder, store, selectedBarIndex, selectedSeriesIndex),
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ButtonRowDelegate(header, nullptr),
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m_view(this, store),
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m_storeVersion(storeVersion),
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m_barVersion(barVersion),
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m_rangeVersion(rangeVersion),
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m_histogramParameterController(nullptr, store)
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{
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}
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void HistogramController::setCurrentDrawnSeries(int series) {
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initYRangeParameters(series);
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}
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StackViewController * HistogramController::stackController() {
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StackViewController * stack = (StackViewController *)(parentResponder()->parentResponder()->parentResponder());
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return stack;
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}
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const char * HistogramController::title() {
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return I18n::translate(I18n::Message::HistogramTab);
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}
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bool HistogramController::handleEvent(Ion::Events::Event event) {
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assert(selectedSeriesIndex() >= 0);
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if (event == Ion::Events::OK) {
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stackController()->push(histogramParameterController());
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return true;
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}
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return MultipleDataViewController::handleEvent(event);
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}
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void HistogramController::viewWillAppear() {
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MultipleDataViewController::viewWillAppear();
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uint32_t storeChecksum = m_store->storeChecksum();
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if (*m_storeVersion != storeChecksum) {
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*m_storeVersion = storeChecksum;
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initBarParameters();
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initRangeParameters();
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}
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uint32_t barChecksum = m_store->barChecksum();
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if (*m_barVersion != barChecksum) {
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*m_barVersion = barChecksum;
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initRangeParameters();
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}
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uint32_t rangeChecksum = m_store->rangeChecksum();
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if (*m_rangeVersion != rangeChecksum) {
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*m_rangeVersion = rangeChecksum;
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initBarSelection();
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reloadBannerView();
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}
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}
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void HistogramController::willExitResponderChain(Responder * nextFirstResponder) {
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if (nextFirstResponder == nullptr || nextFirstResponder == tabController()) {
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if (selectedSeriesIndex() >= 0) {
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m_view.dataViewAtIndex(selectedSeriesIndex())->setForceOkDisplay(false);
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}
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}
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MultipleDataViewController::willExitResponderChain(nextFirstResponder);
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}
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void HistogramController::highlightSelection() {
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HistogramView * selectedHistogramView = static_cast<HistogramView *>(m_view.dataViewAtIndex(selectedSeriesIndex()));
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selectedHistogramView->setHighlight(m_store->startOfBarAtIndex(selectedSeriesIndex(), *m_selectedBarIndex), m_store->endOfBarAtIndex(selectedSeriesIndex(), *m_selectedBarIndex));
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}
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Responder * HistogramController::tabController() const {
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return (parentResponder()->parentResponder()->parentResponder()->parentResponder());
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}
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void HistogramController::reloadBannerView() {
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if (selectedSeriesIndex() < 0) {
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return;
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}
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const size_t bufferSize = k_maxNumberOfCharacters+ PrintFloat::bufferSizeForFloatsWithPrecision(Constant::LargeNumberOfSignificantDigits)*2;
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char buffer[bufferSize];
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int numberOfChar = 0;
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// Add Interval Data
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const char * legend = " [";
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int legendLength = strlen(legend);
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strlcpy(buffer, legend, bufferSize);
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numberOfChar += legendLength;
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// Add lower bound
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if (selectedSeriesIndex() >= 0) {
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double lowerBound = m_store->startOfBarAtIndex(selectedSeriesIndex(), *m_selectedBarIndex);
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numberOfChar += PoincareHelpers::ConvertFloatToText<double>(lowerBound, buffer+numberOfChar, PrintFloat::bufferSizeForFloatsWithPrecision(Constant::LargeNumberOfSignificantDigits), Constant::LargeNumberOfSignificantDigits);
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}
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buffer[numberOfChar++] = ';';
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// Add upper bound
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if (selectedSeriesIndex() >= 0) {
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double upperBound = m_store->endOfBarAtIndex(selectedSeriesIndex(), *m_selectedBarIndex);
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numberOfChar += PoincareHelpers::ConvertFloatToText<double>(upperBound, buffer+numberOfChar, PrintFloat::bufferSizeForFloatsWithPrecision(Constant::LargeNumberOfSignificantDigits), Constant::LargeNumberOfSignificantDigits);
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}
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buffer[numberOfChar++] = '[';
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// Padding
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for (int i = numberOfChar; i < k_maxIntervalLegendLength; i++) {
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buffer[numberOfChar++] = ' ';
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}
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buffer[k_maxIntervalLegendLength] = 0;
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m_view.editableBannerView()->setLegendAtIndex(buffer, 1);
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// Add Size Data
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numberOfChar = 0;
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legend = ": ";
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legendLength = strlen(legend);
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strlcpy(buffer, legend, bufferSize);
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numberOfChar += legendLength;
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double size = 0;
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if (selectedSeriesIndex() >= 0) {
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size = m_store->heightOfBarAtIndex(selectedSeriesIndex(), *m_selectedBarIndex);
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numberOfChar += PoincareHelpers::ConvertFloatToText<double>(size, buffer+numberOfChar, PrintFloat::bufferSizeForFloatsWithPrecision(Constant::LargeNumberOfSignificantDigits), Constant::LargeNumberOfSignificantDigits);
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}
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// Padding
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for (int i = numberOfChar; i < k_maxLegendLength; i++) {
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buffer[numberOfChar++] = ' ';
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}
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buffer[k_maxLegendLength] = 0;
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m_view.editableBannerView()->setLegendAtIndex(buffer, 3);
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// Add Frequency Data
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numberOfChar = 0;
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legend = ": ";
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legendLength = strlen(legend);
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strlcpy(buffer, legend, bufferSize);
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numberOfChar += legendLength;
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if (selectedSeriesIndex() >= 0) {
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double frequency = size/m_store->sumOfOccurrences(selectedSeriesIndex());
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numberOfChar += PoincareHelpers::ConvertFloatToText<double>(frequency, buffer+numberOfChar, PrintFloat::bufferSizeForFloatsWithPrecision(Constant::LargeNumberOfSignificantDigits), Constant::LargeNumberOfSignificantDigits);
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}
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// Padding
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for (int i = numberOfChar; i < k_maxLegendLength; i++) {
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buffer[numberOfChar++] = ' ';
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}
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buffer[k_maxLegendLength] = 0;
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m_view.editableBannerView()->setLegendAtIndex(buffer, 5);
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}
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bool HistogramController::moveSelectionHorizontally(int deltaIndex) {
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int newSelectedBarIndex = *m_selectedBarIndex;
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do {
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newSelectedBarIndex+=deltaIndex;
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} while (m_store->heightOfBarAtIndex(selectedSeriesIndex(), newSelectedBarIndex) == 0
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&& newSelectedBarIndex >= 0
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&& newSelectedBarIndex < m_store->numberOfBars(selectedSeriesIndex()));
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if (newSelectedBarIndex >= 0
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&& newSelectedBarIndex < m_store->numberOfBars(selectedSeriesIndex())
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&& *m_selectedBarIndex != newSelectedBarIndex)
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{
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*m_selectedBarIndex = newSelectedBarIndex;
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m_view.dataViewAtIndex(selectedSeriesIndex())->setHighlight(m_store->startOfBarAtIndex(selectedSeriesIndex(), *m_selectedBarIndex), m_store->endOfBarAtIndex(selectedSeriesIndex(), *m_selectedBarIndex));
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if (m_store->scrollToSelectedBarIndex(selectedSeriesIndex(), *m_selectedBarIndex)) {
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multipleDataView()->reload();
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}
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reloadBannerView();
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return true;
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}
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return false;
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}
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void HistogramController::initRangeParameters() {
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assert(selectedSeriesIndex() >= 0 && m_store->sumOfOccurrences(selectedSeriesIndex()) > 0);
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float minValue = m_store->firstDrawnBarAbscissa();
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float maxValue = -FLT_MAX;
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for (int i = 0; i < Store::k_numberOfSeries; i ++) {
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if (!m_store->seriesIsEmpty(i)) {
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maxValue = max(maxValue, m_store->maxValue(i));
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}
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}
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float barWidth = m_store->barWidth();
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float xMin = minValue;
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float xMax = maxValue + barWidth;
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/* if a bar is represented by less than one pixel, we cap xMax */
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if ((xMax - xMin)/barWidth > k_maxNumberOfBarsPerWindow) {
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xMax = xMin + k_maxNumberOfBarsPerWindow*barWidth;
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}
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/* Edge case */
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if (xMin >= xMax) {
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xMax = xMin + 10.0f*barWidth;
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}
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m_store->setXMin(xMin - Store::k_displayLeftMarginRatio*(xMax-xMin));
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m_store->setXMax(xMax + Store::k_displayRightMarginRatio*(xMax-xMin));
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initYRangeParameters(selectedSeriesIndex());
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}
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void HistogramController::initYRangeParameters(int series) {
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assert(series >= 0 && m_store->sumOfOccurrences(series) > 0);
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float yMax = -FLT_MAX;
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for (int index = 0; index < m_store->numberOfBars(series); index++) {
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float size = m_store->heightOfBarAtIndex(series, index);
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if (size > yMax) {
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yMax = size;
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}
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}
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yMax = yMax/m_store->sumOfOccurrences(series);
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yMax = yMax < 0 ? 1 : yMax;
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m_store->setYMax(yMax*(1.0f+Store::k_displayTopMarginRatio));
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/* Compute YMin:
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* ratioFloatPixel*(0-yMin) = k_bottomMargin
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* ratioFloatPixel*(yMax-yMin) = viewHeight
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*
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* -ratioFloatPixel*yMin = k_bottomMargin
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* ratioFloatPixel*yMax-ratioFloatPixel*yMin = viewHeight
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*
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* ratioFloatPixel = (viewHeight - k_bottomMargin)/yMax
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* yMin = -k_bottomMargin/ratioFloatPixel = yMax*k_bottomMargin/(k_bottomMargin - viewHeight)
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* */
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m_store->setYMin(m_store->yMax()*(float)Store::k_bottomMargin/((float)Store::k_bottomMargin - m_view.dataViewAtIndex(series)->bounds().height()));
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}
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void HistogramController::initBarParameters() {
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assert(selectedSeriesIndex() >= 0 && m_store->sumOfOccurrences(selectedSeriesIndex()) > 0);
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float minValue = FLT_MAX;
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float maxValue = -FLT_MAX;
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for (int i = 0; i < Store::k_numberOfSeries; i ++) {
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if (!m_store->seriesIsEmpty(i)) {
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minValue = min(minValue, m_store->minValue(i));
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maxValue = max(maxValue, m_store->maxValue(i));
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}
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}
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maxValue = minValue >= maxValue ? minValue + std::pow(10.0f, std::floor(std::log10(std::fabs(minValue)))-1.0f) : maxValue;
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m_store->setFirstDrawnBarAbscissa(minValue);
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float barWidth = m_store->computeGridUnit(CurveViewRange::Axis::X, minValue, maxValue);
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if (barWidth <= 0.0f) {
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barWidth = 1.0f;
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}
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m_store->setBarWidth(barWidth);
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}
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void HistogramController::initBarSelection() {
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assert(selectedSeriesIndex() >= 0 && m_store->sumOfOccurrences(selectedSeriesIndex()) > 0);
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*m_selectedBarIndex = 0;
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while ((m_store->heightOfBarAtIndex(selectedSeriesIndex(), *m_selectedBarIndex) == 0 ||
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m_store->startOfBarAtIndex(selectedSeriesIndex(), *m_selectedBarIndex) < m_store->firstDrawnBarAbscissa()) && *m_selectedBarIndex < m_store->numberOfBars(selectedSeriesIndex())) {
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*m_selectedBarIndex = *m_selectedBarIndex+1;
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}
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if (*m_selectedBarIndex >= m_store->numberOfBars(selectedSeriesIndex())) {
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/* No bar is after m_firstDrawnBarAbscissa, so we select the first bar */
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*m_selectedBarIndex = 0;
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while (m_store->heightOfBarAtIndex(selectedSeriesIndex(), *m_selectedBarIndex) == 0 && *m_selectedBarIndex < m_store->numberOfBars(selectedSeriesIndex())) {
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*m_selectedBarIndex = *m_selectedBarIndex+1;
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}
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}
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m_store->scrollToSelectedBarIndex(selectedSeriesIndex(), *m_selectedBarIndex);
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}
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}
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