sequence_toolbox.cpp
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#include "sequence_toolbox.h"
#include "../sequence_store.h"
#include "../../../poincare/src/layout/baseline_relative_layout.h"
#include "../../../poincare/src/layout/string_layout.h"
#include <assert.h>
using namespace Poincare;
namespace Sequence {
SequenceToolbox::SequenceToolbox() :
MathToolbox(),
m_addedCellLayout{},
m_numberOfAddedCells(0)
{
}
SequenceToolbox::~SequenceToolbox() {
for (int i = 0; i < k_maxNumberOfDisplayedRows; i++) {
if (m_addedCellLayout[i]) {
delete m_addedCellLayout[i];
m_addedCellLayout[i] = nullptr;
}
}
}
bool SequenceToolbox::handleEvent(Ion::Events::Event event) {
if (selectedRow() < m_numberOfAddedCells && stackDepth() == 0) {
if (event == Ion::Events::OK || event == Ion::Events::EXE) {
return selectAddedCell(selectedRow());
}
return false;
}
return MathToolbox::handleEventForRow(event, mathToolboxIndex(selectedRow()));
}
int SequenceToolbox::numberOfRows() {
if (stackDepth() == 0) {
return MathToolbox::numberOfRows()+m_numberOfAddedCells;
}
return MathToolbox::numberOfRows();
}
HighlightCell * SequenceToolbox::reusableCell(int index, int type) {
assert(type < 3);
assert(index >= 0);
assert(index < k_maxNumberOfDisplayedRows);
if (type == 2) {
return &m_addedCells[index];
}
return MathToolbox::reusableCell(index, type);
}
void SequenceToolbox::willDisplayCellForIndex(HighlightCell * cell, int index) {
if (typeAtLocation(0, index) != 2) {
MathToolbox::willDisplayCellForIndex(cell, mathToolboxIndex(index));
}
}
int SequenceToolbox::typeAtLocation(int i, int j) {
if (stackDepth() == 0 && j < m_numberOfAddedCells) {
return 2;
}
return MathToolbox::typeAtLocation(i,mathToolboxIndex(j));
}
void SequenceToolbox::setExtraCells(const char * sequenceName, int recurrenceDepth) {
for (int i = 0; i < k_maxNumberOfDisplayedRows; i++) {
if (m_addedCellLayout[i]) {
delete m_addedCellLayout[i];
m_addedCellLayout[i] = nullptr;
}
}
/* If recurrenceDepth < 0, the user is setting the initial conditions so we
* do not want to add any cell in the toolbox. */
if (recurrenceDepth < 0) {
m_numberOfAddedCells = 0;
return;
}
/* The cells added reprensent the sequence at smaller ranks than its depth
* and the other sequence at ranks smaller or equal to the depth, ie:
* if the sequence is u(n+1), we add cells u(n), v(n), v(n+1).
* There is a special case for double recurrent sequences because we do not
* want to parse symbols u(n+2) or v(n+2). */
m_numberOfAddedCells = recurrenceDepth == 2 ? 2*recurrenceDepth : 2*recurrenceDepth+1;
int sequenceIndex = sequenceName == SequenceStore::k_sequenceNames[0] ? 0 : 1;
const char * otherSequenceName = SequenceStore::k_sequenceNames[1-sequenceIndex];
for (int j = 0; j < recurrenceDepth; j++) {
const char * indice = j == 0 ? "n" : "n+1";
m_addedCellLayout[j] = new BaselineRelativeLayout(new StringLayout(sequenceName, 1, KDText::FontSize::Large), new StringLayout(indice, strlen(indice), KDText::FontSize::Small), BaselineRelativeLayout::Type::Subscript);
m_addedCellLayout[j+recurrenceDepth] = new BaselineRelativeLayout(new StringLayout(otherSequenceName, 1, KDText::FontSize::Large), new StringLayout(indice, strlen(indice), KDText::FontSize::Small), BaselineRelativeLayout::Type::Subscript);
}
if (recurrenceDepth < 2) {
const char * indice = recurrenceDepth == 0 ? "n" : (recurrenceDepth == 1 ? "n+1" : "n+2");
m_addedCellLayout[2*recurrenceDepth] = new BaselineRelativeLayout(new StringLayout(otherSequenceName, 1, KDText::FontSize::Large), new StringLayout(indice, strlen(indice), KDText::FontSize::Small), BaselineRelativeLayout::Type::Subscript);
}
for (int index = 0; index < k_maxNumberOfDisplayedRows; index++) {
m_addedCells[index].setExpression(m_addedCellLayout[index]);
}
}
bool SequenceToolbox::selectAddedCell(int selectedRow){
char buffer[10];
BaselineRelativeLayout * layout = (BaselineRelativeLayout *)m_addedCellLayout[selectedRow];
StringLayout * nameLayout = (StringLayout *)layout->baseLayout();
StringLayout * subscriptLayout = (StringLayout *)layout->indiceLayout();
int currentChar = 0;
strlcpy(buffer, nameLayout->text(), strlen(nameLayout->text())+1);
currentChar += strlen(nameLayout->text());
buffer[currentChar++] = '(';
strlcpy(buffer+currentChar, subscriptLayout->text(), strlen(subscriptLayout->text())+1);
currentChar += strlen(subscriptLayout->text());
buffer[currentChar++] = ')';
buffer[currentChar] = 0;
sender()->insertTextAtLocation(buffer, sender()->cursorLocation());
sender()->setCursorLocation(sender()->cursorLocation()+currentChar);
app()->dismissModalViewController();
return true;
}
int SequenceToolbox::mathToolboxIndex(int index) {
int indexMathToolbox = index;
if (stackDepth() == 0) {
indexMathToolbox = index - m_numberOfAddedCells;
}
return indexMathToolbox;
}
}