From 529a06131d6da8e0c9ec78e74b18a0bb618ff031 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89milie=20Feral?= <emilie.feral@numworks.com>
Date: Wed, 19 Oct 2016 16:01:14 +0200
Subject: [PATCH] [apps/graph] Add a boolean in function to indicate wheter to
 display derivative

Change-Id: I0565de1645952007347cf3aee5f1a70f8280e0f3
---
 apps/graph/function.cpp | 11 ++++++++++-
 apps/graph/function.h   |  3 +++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/apps/graph/function.cpp b/apps/graph/function.cpp
index b5c8e7d18..95ac5065f 100644
--- a/apps/graph/function.cpp
+++ b/apps/graph/function.cpp
@@ -8,7 +8,8 @@ Function::Function(const char * text, KDColor color) :
   m_color(color),
   m_expression(nullptr),
   m_layout(nullptr),
-  m_active(true)
+  m_active(true),
+  m_displayDerivative(false)
 {
 }
 
@@ -57,10 +58,18 @@ bool Function::isActive() {
   return m_active;
 }
 
+bool Function::displayDerivative() {
+  return m_displayDerivative;
+}
+
 void Function::setActive(bool active) {
   m_active = active;
 }
 
+void Function::setDisplayDerivative(bool display) {
+  m_displayDerivative = display;
+}
+
 float Function::evaluateAtAbscissa(float x, EvaluateContext * context) const {
   context->setOverridenValueForSymbolX(x);
   return m_expression->approximate(*context);
diff --git a/apps/graph/function.h b/apps/graph/function.h
index 44c1252f5..56bab2ebe 100644
--- a/apps/graph/function.h
+++ b/apps/graph/function.h
@@ -20,6 +20,8 @@ public:
   ExpressionLayout * layout();
   bool isActive();
   void setActive(bool active);
+  bool displayDerivative();
+  void setDisplayDerivative(bool display);
   void setContent(const char * c);
   void setColor(KDColor m_color);
   float evaluateAtAbscissa(float x, EvaluateContext * context) const;
@@ -33,6 +35,7 @@ private:
   Expression * m_expression;
   ExpressionLayout * m_layout;
   bool m_active;
+  bool m_displayDerivative;
 };
 
 }