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[shared] Factorize GraphController::initCursorParameters of Graph and

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This commit is contained in:
Émilie Feral
2018-07-06 13:46:12 +02:00
committed by EmilieNumworks
parent 9dc775295b
commit 66d920a280
6 changed files with 24 additions and 29 deletions
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19
apps/shared/function_graph_controller.cpp
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@@ -108,6 +108,25 @@ void FunctionGraphController::initRangeParameters() {
selectFunctionWithCursor(0);
}
double FunctionGraphController::defaultCursorAbscissa() {
return (interactiveCurveViewRange()->xMin()+interactiveCurveViewRange()->xMax())/2.0f;
}
void FunctionGraphController::initCursorParameters() {
double x = defaultCursorAbscissa();
TextFieldDelegateApp * myApp = (TextFieldDelegateApp *)app();
int functionIndex = 0;
double y = 0;
do {
Function * firstFunction = functionStore()->activeFunctionAtIndex(functionIndex++);
y = firstFunction->evaluateAtAbscissa(x, myApp->localContext());
} while ((std::isnan(y) || std::isinf(y)) && functionIndex < functionStore()->numberOfActiveFunctions());
m_cursor->moveTo(x, y);
functionIndex = (std::isnan(y) || std::isinf(y)) ? 0 : functionIndex - 1;
selectFunctionWithCursor(functionIndex);
interactiveCurveViewRange()->panToMakePointVisible(x, y, k_displayTopMarginRatio, k_cursorRightMarginRatio, k_displayBottomMarginRatio, k_cursorLeftMarginRatio);
}
bool FunctionGraphController::moveCursorVertically(int direction) {
Function * actualFunction = functionStore()->activeFunctionAtIndex(indexFunctionSelectedByCursor());
TextFieldDelegateApp * myApp = (TextFieldDelegateApp *)app();