[apps/sequence] create a class grpah controller

Change-Id: Iaf9e9c03bd4b9946cddaefb14af5e014075ee109

apps/sequence/graph/graph_controller.cpp

@@ -0,0 +1,73 @@
+#include "graph_controller.h"
+
+using namespace Shared;
+
+namespace Sequence {
+
+GraphController::GraphController(Responder * parentResponder, SequenceStore * sequenceStore, HeaderViewController * header) :
+  FunctionGraphController(parentResponder, header, &m_graphRange, &m_view),
+  m_bannerView(BannerView()),
+  m_view(GraphView(sequenceStore, &m_graphRange, &m_cursor, &m_bannerView, &m_cursorView)),
+  m_graphRange(CurveViewRange(&m_cursor, this)),
+  m_curveParameterController(CurveParameterController(&m_graphRange, &m_cursor)),
+  m_sequenceStore(sequenceStore)
+{
+}
+
+const char * GraphController::emptyMessage() {
+  if (m_sequenceStore->numberOfDefinedFunctions() == 0) {
+    return "Aucune suite";
+  }
+  return "Aucune suite activee";
+}
+
+BannerView * GraphController::bannerView() {
+  return &m_bannerView;
+}
+
+bool GraphController::moveCursorHorizontally(int direction) {
+  float xCursorPosition = roundf(m_cursor.x());
+  if (direction < 0 && xCursorPosition <= 0) {
+    return false;
+  }
+  float x = direction > 0 ? xCursorPosition + 1.0f :
+    xCursorPosition -  1.0f;
+  Sequence * s = m_sequenceStore->activeFunctionAtIndex(m_indexFunctionSelectedByCursor);
+  TextFieldDelegateApp * myApp = (TextFieldDelegateApp *)app();
+  float y = s->evaluateAtAbscissa(x, myApp->localContext());
+  m_cursor.moveTo(x, y);
+  m_graphRange.panToMakePointVisible(x, y, k_cursorTopMarginRatio, k_cursorRightMarginRatio, k_cursorBottomMarginRatio, k_cursorLeftMarginRatio);
+  return true;
+}
+
+void GraphController::initCursorParameters() {
+  float x = roundf((interactiveCurveViewRange()->xMin()+interactiveCurveViewRange()->xMax())/2.0f);
+  m_indexFunctionSelectedByCursor = 0;
+  TextFieldDelegateApp * myApp = (TextFieldDelegateApp *)app();
+  int functionIndex = 0;
+  float y = 0;
+  do {
+    Sequence * firstFunction = m_sequenceStore->activeFunctionAtIndex(functionIndex++);
+    y = firstFunction->evaluateAtAbscissa(x, myApp->localContext());
+  } while (isnan(y) && functionIndex < m_sequenceStore->numberOfActiveFunctions());
+  m_cursor.moveTo(x, y);
+  m_graphRange.panToMakePointVisible(x, y, k_cursorTopMarginRatio, k_cursorRightMarginRatio, k_cursorBottomMarginRatio, k_cursorLeftMarginRatio);
+}
+
+CurveViewRange * GraphController::interactiveCurveViewRange() {
+  return &m_graphRange;
+}
+
+SequenceStore * GraphController::functionStore() const {
+  return m_sequenceStore;
+}
+
+GraphView * GraphController::functionGraphView() {
+  return &m_view;
+}
+
+CurveParameterController * GraphController::curveParameterController() {
+  return &m_curveParameterController;
+}
+
+}