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We memoize the checksum of the x first models, and we check that one of these models is still present when the graph view appears. If so, we do not reload the range, other wise we reload it. Scenario: f(t) = [t^2 t+1] in parametric Display the graph f(x) = 1 on ]-inf;0] g(x) = 2 on [0;inf[ Display the graph -> the range did not change
86 lines
3.6 KiB
C++
86 lines
3.6 KiB
C++
#ifndef SHARED_INTERACTIVE_CURVE_VIEW_CONTROLLER_H
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#define SHARED_INTERACTIVE_CURVE_VIEW_CONTROLLER_H
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#include "simple_interactive_curve_view_controller.h"
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#include "cursor_view.h"
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#include "ok_view.h"
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#include "range_parameter_controller.h"
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#include "zoom_parameter_controller.h"
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#include <poincare/coordinate_2D.h>
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namespace Shared {
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class InteractiveCurveViewController : public SimpleInteractiveCurveViewController, public InteractiveCurveViewRangeDelegate, public ButtonRowDelegate, public AlternateEmptyViewDefaultDelegate {
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public:
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InteractiveCurveViewController(Responder * parentResponder, InputEventHandlerDelegate * inputEventHandlerDelegate, ButtonRowController * header, InteractiveCurveViewRange * interactiveRange, CurveView * curveView, CurveViewCursor * cursor, uint32_t * modelVersion, uint32_t * previousModelsVersions, uint32_t * rangeVersion);
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const char * title() override;
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bool handleEvent(Ion::Events::Event event) override;
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void didBecomeFirstResponder() override;
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TELEMETRY_ID("Graph");
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ViewController * rangeParameterController();
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ViewController * zoomParameterController();
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virtual ViewController * initialisationParameterController() = 0;
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int numberOfButtons(ButtonRowController::Position position) const override;
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Button * buttonAtIndex(int index, ButtonRowController::Position position) const override;
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Responder * defaultController() override;
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bool previousModelsWereAllDeleted();
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void viewWillAppear() override;
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void viewDidDisappear() override;
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void willExitResponderChain(Responder * nextFirstResponder) override;
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bool textFieldDidFinishEditing(TextField * textField, const char * text, Ion::Events::Event event) override;
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bool textFieldDidReceiveEvent(TextField * textField, Ion::Events::Event event) override;
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protected:
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Responder * tabController() const;
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virtual StackViewController * stackController() const;
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virtual void initCursorParameters() = 0;
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virtual bool moveCursorVertically(int direction) = 0;
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virtual uint32_t modelVersion() = 0;
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virtual uint32_t modelVersionAtIndex(size_t i) = 0;
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virtual uint32_t rangeVersion() = 0;
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bool isCursorVisible();
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// Closest vertical curve helper
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int closestCurveIndexVertically(bool goingUp, int currentSelectedCurve, Poincare::Context * context) const;
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virtual bool closestCurveIndexIsSuitable(int newIndex, int currentIndex) const = 0;
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virtual int selectedCurveIndex() const = 0;
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virtual Poincare::Coordinate2D<double> xyValues(int curveIndex, double t, Poincare::Context * context) const = 0;
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virtual bool suitableYValue(double y) const { return true; }
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virtual int numberOfCurves() const = 0;
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// SimpleInteractiveCurveViewController
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float cursorBottomMarginRatio() override;
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OkView m_okView;
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private:
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/* The value 21 is the actual height of the ButtonRow, that is
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* ButtonRowController::ContentView::k_plainStyleHeight + 1.
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* That value is not public though. */
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constexpr static float k_viewHeight = Ion::Display::Height - Metric::TitleBarHeight - Metric::TabHeight - 21;
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float estimatedBannerHeight() const;
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virtual int estimatedBannerNumberOfLines() const { return 1; }
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// InteractiveCurveViewRangeDelegate
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float addMargin(float x, float range, bool isVertical, bool isMin) override;
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virtual bool shouldSetDefaultOnModelChange() const { return false; }
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virtual size_t numberOfMemoizedVersions() const = 0;
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uint32_t * m_modelVersion;
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uint32_t * m_previousModelsVersions;
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uint32_t * m_rangeVersion;
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RangeParameterController m_rangeParameterController;
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ZoomParameterController m_zoomParameterController;
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Button m_rangeButton;
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Button m_zoomButton;
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Button m_defaultInitialisationButton;
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};
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}
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#endif
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