Files
Upsilon/apps/calculation/calculation.h
Émilie Feral bf2a26d90e [apps] In calculation, do not accept expression whose corresponding
texts is too long

Change-Id: Ic96e5ed42e249d43e21241f8e1a7b1e873f3cad3
2017-11-27 12:07:35 +01:00

54 lines
2.0 KiB
C++

#ifndef CALCULATION_CALCULATION_H
#define CALCULATION_CALCULATION_H
#include <escher.h>
#include <poincare.h>
namespace Calculation {
class Calculation {
public:
Calculation();
~Calculation(); // Delete expression and layout, if needed
Calculation& operator=(const Calculation& other);
Calculation(const Calculation& other) = delete;
Calculation(Calculation&& other) = delete;
Calculation& operator=(Calculation&& other) = delete;
/* c.reset() is the equivalent of c = Calculation() without copy assingment. */
void reset();
void setContent(const char * c, Poincare::Context * context);
const char * inputText();
const char * outputText();
const char * exactOutputText();
const char * approximateOutputText();
Poincare::Expression * input();
Poincare::ExpressionLayout * inputLayout();
Poincare::Expression * output(Poincare::Context * context);
Poincare::Expression * approximateOutput(Poincare::Context * context);
Poincare::ExpressionLayout * outputLayout(Poincare::Context * context);
Poincare::ExpressionLayout * exactOutputLayout(Poincare::Context * context);
Poincare::ExpressionLayout * approximateOutputLayout(Poincare::Context * context);
bool isEmpty();
void tidy();
bool shouldApproximateOutput();
constexpr static int k_printedExpressionSize = 2*::TextField::maxBufferSize();
private:
Poincare::Expression * exactOutput(Poincare::Context * context);
/* Buffers holding text expressions have to be longer than the text written
* by user (of maximum length TextField::maxBufferSize()) because when we
* print an expression we add omitted signs (multiplications, parenthesis...) */
char m_inputText[k_printedExpressionSize];
char m_exactOutputText[k_printedExpressionSize];
char m_approximateOutputText[k_printedExpressionSize];
Poincare::Expression * m_input;
Poincare::ExpressionLayout * m_inputLayout;
Poincare::Expression * m_exactOutput;
Poincare::ExpressionLayout * m_exactOutputLayout;
Poincare::Expression * m_approximateOutput;
Poincare::ExpressionLayout * m_approximateOutputLayout;
};
}
#endif