[apps] Graph: Change name:

ExtremumGraphController-->CalculationGraphController

apps/graph/graph/calculation_graph_controller.cpp

@@ -0,0 +1,87 @@
+#include "calculation_graph_controller.h"
+#include "../app.h"
+
+using namespace Shared;
+using namespace Poincare;
+
+namespace Graph {
+
+CalculationGraphController::CalculationGraphController(Responder * parentResponder, GraphView * graphView, BannerView * bannerView, Shared::InteractiveCurveViewRange * curveViewRange, CurveViewCursor * cursor, I18n::Message defaultMessage) :
+  ViewController(parentResponder),
+  m_graphView(graphView),
+  m_bannerView(bannerView),
+  m_graphRange(curveViewRange),
+  m_cursor(cursor),
+  m_function(nullptr),
+  m_defaultBannerView(KDText::FontSize::Small, defaultMessage, 0.5f, 0.5f, KDColorBlack, Palette::GreyMiddle),
+  m_isActive(false)
+{
+}
+
+View * CalculationGraphController::view() {
+  return m_graphView;
+}
+
+void CalculationGraphController::viewWillAppear() {
+  assert(m_function != nullptr);
+  CartesianFunction::Point pointOfInterest = computeNewPointOfInteresetFromAbscissa(m_graphRange->xMin(), 1);
+  if (std::isnan(pointOfInterest.abscissa)) {
+    m_isActive = false;
+    m_graphView->setCursorView(nullptr);
+    m_graphView->setBannerView(&m_defaultBannerView);
+  } else {
+    m_isActive = true;
+    m_cursor->moveTo(pointOfInterest.abscissa, pointOfInterest.value);
+    m_graphRange->panToMakePointVisible(m_cursor->x(), m_cursor->y(), k_cursorTopMarginRatio, SimpleInteractiveCurveViewController::k_cursorRightMarginRatio, k_cursorBottomMarginRatio, SimpleInteractiveCurveViewController::k_cursorLeftMarginRatio);
+    reloadBannerView();
+  }
+  m_graphView->setOkView(nullptr);
+  m_graphView->reload();
+}
+
+bool CalculationGraphController::handleEvent(Ion::Events::Event event) {
+  if (event == Ion::Events::EXE || event == Ion::Events::OK) {
+    StackViewController * stack = static_cast<StackViewController *>(parentResponder());
+    stack->pop();
+    return true;
+  }
+  if (m_isActive && (event == Ion::Events::Right || event == Ion::Events::Left)) {
+    int direction = event == Ion::Events::Right ? 1 : -1;
+    if (moveCursor(direction)) {
+      reloadBannerView();
+      m_graphView->reload();
+      return true;
+    }
+  }
+  return false;
+}
+
+void CalculationGraphController::setFunction(CartesianFunction * function) {
+  m_graphView->selectFunction(function);
+  m_function = function;
+}
+
+void CalculationGraphController::reloadBannerView() {
+  m_bannerView->setNumberOfSubviews(2);
+  reloadBannerViewForCursorOnFunction(m_cursor, m_function, 'x');
+}
+
+bool CalculationGraphController::moveCursor(int direction) {
+  CartesianFunction::Point newPointOfInterest = computeNewPointOfInteresetFromAbscissa(m_cursor->x(), direction);
+  if (std::isnan(newPointOfInterest.abscissa)) {
+    return false;
+  }
+  m_cursor->moveTo(newPointOfInterest.abscissa, newPointOfInterest.value);
+  m_graphRange->panToMakePointVisible(m_cursor->x(), m_cursor->y(), k_cursorTopMarginRatio, SimpleInteractiveCurveViewController::k_cursorRightMarginRatio, k_cursorBottomMarginRatio, SimpleInteractiveCurveViewController::k_cursorLeftMarginRatio);
+  return true;
+}
+
+CartesianFunction::Point CalculationGraphController::computeNewPointOfInteresetFromAbscissa(double start, int direction) {
+  TextFieldDelegateApp * myApp = (TextFieldDelegateApp *)app();
+  double step = m_graphRange->xGridUnit()/10.0;
+  step = direction < 0 ? -step : step;
+  double max = direction > 0 ? m_graphRange->xMax() : m_graphRange->xMin();
+  return computeNewPointOfInterest(start, step, max, myApp->localContext());
+}
+
+}