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7f43b73049
At the moment ViewController::viewWillAppear doesn't do anything, so there is no real impact. But if we want to use it it needs to be called from subclasses.
104 lines
4.4 KiB
C++
104 lines
4.4 KiB
C++
#include "tangent_graph_controller.h"
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#include "../app.h"
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#include "../../apps_container.h"
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#include "../../shared/poincare_helpers.h"
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#include <poincare/preferences.h>
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using namespace Shared;
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using namespace Poincare;
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namespace Graph {
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TangentGraphController::TangentGraphController(Responder * parentResponder, GraphView * graphView, BannerView * bannerView, Shared::InteractiveCurveViewRange * curveViewRange, CurveViewCursor * cursor) :
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SimpleInteractiveCurveViewController(parentResponder, cursor),
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m_graphView(graphView),
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m_bannerView(bannerView),
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m_graphRange(curveViewRange),
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m_record()
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{
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}
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const char * TangentGraphController::title() {
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return I18n::translate(I18n::Message::Tangent);
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}
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void TangentGraphController::viewWillAppear() {
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Shared::SimpleInteractiveCurveViewController::viewWillAppear();
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m_graphRange->panToMakePointVisible(m_cursor->x(), m_cursor->y(), cursorTopMarginRatio(), k_cursorRightMarginRatio, cursorBottomMarginRatio(), k_cursorLeftMarginRatio);
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m_graphView->drawTangent(true);
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m_graphView->setOkView(nullptr);
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m_graphView->selectMainView(true);
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m_bannerView->setNumberOfSubviews(BannerView::k_numberOfSubviews);
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reloadBannerView();
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m_graphView->reload();
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}
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void TangentGraphController::didBecomeFirstResponder() {
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if (curveView()->isMainViewSelected()) {
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m_bannerView->abscissaValue()->setParentResponder(this);
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m_bannerView->abscissaValue()->setDelegates(textFieldDelegateApp(), this);
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Container::activeApp()->setFirstResponder(m_bannerView->abscissaValue());
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}
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}
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bool TangentGraphController::textFieldDidFinishEditing(TextField * textField, const char * text, Ion::Events::Event event) {
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Shared::TextFieldDelegateApp * myApp = textFieldDelegateApp();
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double floatBody;
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if (myApp->hasUndefinedValue(text, floatBody)) {
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return false;
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}
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ExpiringPointer<ContinuousFunction> function = App::app()->functionStore()->modelForRecord(m_record);
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assert(function->plotType() == Shared::ContinuousFunction::PlotType::Cartesian);
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double y = function->evaluate2DAtParameter(floatBody, myApp->localContext()).x2();
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m_cursor->moveTo(floatBody, floatBody, y);
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interactiveCurveViewRange()->panToMakePointVisible(m_cursor->x(), m_cursor->y(), cursorTopMarginRatio(), k_cursorRightMarginRatio, cursorBottomMarginRatio(), k_cursorLeftMarginRatio);
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reloadBannerView();
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curveView()->reload();
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return true;
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}
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void TangentGraphController::setRecord(Ion::Storage::Record record) {
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m_graphView->selectRecord(record);
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m_record = record;
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}
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void TangentGraphController::reloadBannerView() {
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if (m_record.isNull()) {
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return;
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}
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FunctionBannerDelegate::reloadBannerViewForCursorOnFunction(m_cursor, m_record, Shared::FunctionApp::app()->functionStore(), AppsContainer::sharedAppsContainer()->globalContext());
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GraphControllerHelper::reloadDerivativeInBannerViewForCursorOnFunction(m_cursor, m_record);
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constexpr size_t bufferSize = FunctionBannerDelegate::k_maxNumberOfCharacters + PrintFloat::charSizeForFloatsWithPrecision(Preferences::LargeNumberOfSignificantDigits);
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char buffer[bufferSize];
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Poincare::Context * context = textFieldDelegateApp()->localContext();
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constexpr int precision = Preferences::MediumNumberOfSignificantDigits;
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const char * legend = "a=";
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int legendLength = strlcpy(buffer, legend, bufferSize);
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ExpiringPointer<ContinuousFunction> function = App::app()->functionStore()->modelForRecord(m_record);
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double y = function->approximateDerivative(m_cursor->x(), context);
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PoincareHelpers::ConvertFloatToText<double>(y, buffer + legendLength, bufferSize - legendLength, precision);
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m_bannerView->aView()->setText(buffer);
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legend = "b=";
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legendLength = strlcpy(buffer, legend, bufferSize);
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Shared::TextFieldDelegateApp * myApp = textFieldDelegateApp();
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assert(function->plotType() == Shared::ContinuousFunction::PlotType::Cartesian);
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y = -y*m_cursor->x()+function->evaluate2DAtParameter(m_cursor->x(), myApp->localContext()).x2();
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PoincareHelpers::ConvertFloatToText<double>(y, buffer + legendLength, bufferSize - legendLength, precision);
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m_bannerView->bView()->setText(buffer);
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m_bannerView->reload();
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}
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bool TangentGraphController::moveCursorHorizontally(int direction, bool fast) {
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return privateMoveCursorHorizontally(m_cursor, direction, m_graphRange, k_numberOfCursorStepsInGradUnit, m_record);
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}
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bool TangentGraphController::handleEnter() {
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StackViewController * stack = static_cast<StackViewController *>(parentResponder());
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stack->pop();
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return true;
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}
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}
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