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https://github.com/UpsilonNumworks/Upsilon.git
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b8af15f1ab
- CreateLayout depends on the float display mode and the number of significant digits - Float display mode does not have a default value anymore
73 lines
3.1 KiB
C++
73 lines
3.1 KiB
C++
#include "tangent_graph_controller.h"
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#include "../../shared/poincare_helpers.h"
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#include "../app.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, curveViewRange, graphView, 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_function(nullptr)
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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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m_graphRange->panToMakePointVisible(m_cursor->x(), m_cursor->y(), k_cursorTopMarginRatio, k_cursorRightMarginRatio, k_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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reloadBannerView();
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m_graphView->reload();
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}
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void TangentGraphController::setFunction(CartesianFunction * function) {
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m_graphView->selectFunction(function);
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m_function = function;
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}
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void TangentGraphController::reloadBannerView() {
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m_bannerView->setNumberOfSubviews(6);
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if (m_function == nullptr) {
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return;
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}
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FunctionBannerDelegate::reloadBannerViewForCursorOnFunction(m_cursor, m_function, 'x');
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TextFieldDelegateApp * myApp = (TextFieldDelegateApp *)app();
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GraphControllerHelper::reloadDerivativeInBannerViewForCursorOnFunction(m_cursor, m_function, myApp);
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char buffer[FunctionBannerDelegate::k_maxNumberOfCharacters+PrintFloat::bufferSizeForFloatsWithPrecision(Constant::LargeNumberOfSignificantDigits)];
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const char * legend = "a=";
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int legendLength = strlen(legend);
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strlcpy(buffer, legend, legendLength+1);
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double y = m_function->approximateDerivative(m_cursor->x(), myApp->localContext());
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PoincareHelpers::ConvertFloatToText<double>(y, buffer + legendLength, PrintFloat::bufferSizeForFloatsWithPrecision(Constant::MediumNumberOfSignificantDigits), Constant::MediumNumberOfSignificantDigits);
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m_bannerView->setLegendAtIndex(buffer, 4);
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legend = "b=";
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legendLength = strlen(legend);
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strlcpy(buffer, legend, legendLength+1);
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y = -y*m_cursor->x()+m_function->evaluateAtAbscissa(m_cursor->x(), myApp->localContext());
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PoincareHelpers::ConvertFloatToText<double>(y, buffer + legendLength, PrintFloat::bufferSizeForFloatsWithPrecision(Constant::MediumNumberOfSignificantDigits), Constant::MediumNumberOfSignificantDigits);
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m_bannerView->setLegendAtIndex(buffer, 5);
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}
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bool TangentGraphController::moveCursorHorizontally(int direction) {
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TextFieldDelegateApp * myApp = (TextFieldDelegateApp *)app();
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return privateMoveCursorHorizontally(m_cursor, direction, m_graphRange, k_numberOfCursorStepsInGradUnit, m_function, myApp, k_cursorTopMarginRatio, k_cursorRightMarginRatio, k_cursorBottomMarginRatio, k_cursorLeftMarginRatio);
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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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