[apps/graph/graph] Define PreimageParameterController class

apps/graph/Makefile

@@ -13,6 +13,7 @@ app_src += $(addprefix apps/graph/,\
   graph/graph_controller_helper.cpp \
   graph/graph_view.cpp \
   graph/preimage_graph_controller.cpp\
+  graph/preimage_parameter_controller.cpp\
   graph/integral_graph_controller.cpp \
   graph/intersection_graph_controller.cpp \
   graph/root_graph_controller.cpp \

apps/graph/graph/preimage_parameter_controller.cpp

@@ -0,0 +1,53 @@
+#include "preimage_parameter_controller.h"
+#include "../app.h"
+#include <assert.h>
+
+namespace Graph {
+
+PreimageParameterController::PreimageParameterController(
+  Responder * parentResponder,
+  InputEventHandlerDelegate * inputEventHandlerDelegate,
+  Shared::InteractiveCurveViewRange * graphRange,
+  Shared::CurveViewCursor * cursor,
+  PreimageGraphController * preimageGraphController
+) :
+  Shared::GoToParameterController(
+    parentResponder,
+    inputEventHandlerDelegate,
+    graphRange,
+    cursor,
+    I18n::Message::Y
+  ),
+  m_preimageGraphController(preimageGraphController)
+{
+}
+
+const char * PreimageParameterController::title() {
+  return I18n::translate(I18n::Message::Preimage);
+}
+
+void PreimageParameterController::viewWillAppear() {
+  m_preimageGraphController->setImage(m_cursor->y());
+  Shared::GoToParameterController::viewWillAppear();
+}
+
+void PreimageParameterController::buttonAction() {
+  m_preimageGraphController->setRecord(m_record);
+  StackViewController * stack = static_cast<StackViewController *>(parentResponder());
+  stack->pop();
+  stack->pop();
+  stack->pop();
+  stack->push(m_preimageGraphController);
+}
+
+double PreimageParameterController::parameterAtIndex(int index) {
+  assert(index == 0);
+  return m_preimageGraphController->image();
+}
+bool PreimageParameterController::setParameterAtIndex(int parameterIndex, double f) {
+  assert(parameterIndex == 0);
+  m_preimageGraphController->setImage(f);
+  return true;
+}
+
+}

apps/graph/graph/preimage_parameter_controller.h

@@ -0,0 +1,31 @@
+#ifndef GRAPH_PREIMAGE_PARAMETER_CONTROLLER
+#define GRAPH_PREIMAGE_PARAMETER_CONTROLLER
+
+#include "../../shared/go_to_parameter_controller.h"
+#include "preimage_graph_controller.h"
+
+namespace Graph {
+
+class PreimageParameterController : public Shared::GoToParameterController {
+public:
+  PreimageParameterController(
+    Responder * parentResponder,
+    InputEventHandlerDelegate * inputEventHandlerDelegate,
+    Shared::InteractiveCurveViewRange * graphRange,
+    Shared::CurveViewCursor * cursor,
+    PreimageGraphController * preimageGraphController
+  );
+  const char * title() override;
+  void setRecord(Ion::Storage::Record record) { m_record = record; }
+  void viewWillAppear() override;
+private:
+  void buttonAction() override;
+  double parameterAtIndex(int index) override;
+  bool setParameterAtIndex(int parameterIndex, double f) override;
+  Ion::Storage::Record m_record;
+  PreimageGraphController * m_preimageGraphController;
+};
+
+}
+
+#endif