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[interactive_curve_view_controller] Fix Cursor

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Restore the permanence of the cursor between accesses to the graph
window.
The cursor used to be reset when the models had been modified. As there
is no longer a system in place to track these modifications, we manually
check if there is a curve beneath the cursor before reseting it.

Change-Id: I6f71fc17744b5bf1ee552c82126bb4a08b823629
This commit is contained in:
Gabriel Ozouf
2020-10-14 09:46:21 +02:00
committed by Émilie Feral
parent 16707aa518
commit 190568ea84
6 changed files with 33 additions and 1 deletions
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15
apps/regression/graph_controller.cpp
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@@ -259,6 +259,21 @@ void GraphController::initCursorParameters() {
*m_selectedDotIndex = m_store->numberOfPairsOfSeries(*m_selectedSeriesIndex);
}
bool GraphController::isCursorHanging() {
if (m_store->seriesIsEmpty(*m_selectedSeriesIndex)) {
return true;
}
Coordinate2D<double> xy;
if (*m_selectedDotIndex == -1) {
xy = xyValues(*m_selectedSeriesIndex, m_cursor->t(), globalContext());
} else if (*m_selectedDotIndex == m_store->numberOfPairsOfSeries(*m_selectedSeriesIndex)) {
xy = Coordinate2D<double>(m_store->meanOfColumn(*m_selectedSeriesIndex, 0), m_store->meanOfColumn(*m_selectedSeriesIndex, 1));
} else {
xy = Coordinate2D<double>(m_store->get(*m_selectedSeriesIndex, 0, *m_selectedDotIndex), m_store->get(*m_selectedSeriesIndex, 1, *m_selectedDotIndex));
}
return xy.x1() != m_cursor->x() || xy.x2() != m_cursor->y();
}
bool GraphController::moveCursorVertically(int direction) {
Poincare::Context * context = globalContext();
double x = m_cursor->x();